CN114776173B - Anti-pinch control circuit and method for lifting car window motor - Google Patents
Anti-pinch control circuit and method for lifting car window motor Download PDFInfo
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- CN114776173B CN114776173B CN202210463066.9A CN202210463066A CN114776173B CN 114776173 B CN114776173 B CN 114776173B CN 202210463066 A CN202210463066 A CN 202210463066A CN 114776173 B CN114776173 B CN 114776173B
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000009471 action Effects 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims description 237
- 230000000630 rising effect Effects 0.000 claims description 115
- 230000001174 ascending effect Effects 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 9
- 239000005357 flat glass Substances 0.000 claims description 7
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 239000011521 glass Substances 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
- E05F15/695—Control circuits therefor
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
- E05F15/697—Motor units therefor, e.g. geared motors
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- Power-Operated Mechanisms For Wings (AREA)
- Window Of Vehicle (AREA)
Abstract
The invention discloses an anti-pinch control circuit and method for a lifting car window motor. Comprising the following steps: the main control unit, the driving unit and the lifting controller are sequentially connected; the switch circuit is positioned between the descending signal output end of the lifting controller and the lifting window motor, and the input end of the switch circuit is connected with the driving unit; when the main control unit determines that the anti-pinch action needs to be executed and the recoverable fuse is detected to be disconnected, an anti-pinch intention signal is output to the driving unit, so that the driving unit outputs a first control signal to the lifting controller and outputs a second control signal to the switching circuit; the lifting controller sucks the descending signal output end so that the descending signal output end outputs a descending control signal; the switch circuit is conducted and outputs a descending control signal to the lifting window motor. By the mode, when the recoverable fuse is disconnected, the descending control signal can still be output to the lifting window motor, and the failure of the anti-pinch reversing function caused by the thermal protection stopping action of the lifting window motor is avoided.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an anti-pinch control circuit and method for a lifting window motor.
Background
The window lifting is used as a high-frequency use function of a customer, and a thermal protection design is needed to avoid potential safety hazards such as hardware damage or fire and smoke generation caused by accumulated heat generated by long-time operation of a motor. At present, the motor hardware thermal protection scheme is that a recoverable fuse (PTC) is added in the motor, if the PTC is disconnected when the anti-clamping or anti-clamping process is triggered, an Electronic Control Unit (ECU) cannot control the motor to act, so that the window is always in a state of clamping foreign matters or the reverse rotation amount is insufficient, and the complete anti-clamping reverse rotation function cannot be realized.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide an anti-pinch control circuit and an anti-pinch control method for a lifting car window motor, and aims to solve the technical problem that car window anti-pinch reversal cannot be realized when a recoverable fuse is disconnected in the current hardware thermal protection design.
In order to achieve the above object, the present invention provides an anti-pinch control circuit of a lift window motor, the anti-pinch control circuit of the lift window motor comprising:
The main control unit, the driving unit and the lifting controller are connected in sequence;
The switching circuit is positioned between the descending signal output end of the lifting controller and the lifting window motor, and the input end of the switching circuit is connected with the driving unit;
the main control unit is used for outputting an anti-pinch intention signal to the driving unit when the main control unit determines that anti-pinch action needs to be executed and detects that the recoverable fuse in the switch circuit is disconnected;
the driving unit is used for generating a first control signal and a second control signal according to the anti-pinch intention signal, outputting the first control signal to the lifting controller and outputting the second control signal to the switching circuit;
The lifting controller is used for sucking the descending signal output end according to the first control signal so as to enable the descending signal output end to output a descending control signal;
The switch circuit is used for conducting according to the second control signal and outputting the descending control signal to the lifting car window motor.
Optionally, the lift car window circuit further includes: a rising signal detection circuit and a falling signal detection circuit;
The input end of the rising signal detection circuit is connected with a rising signal acquisition point, the rising signal acquisition point is positioned on a rising signal line between the rising signal output end of the lifting controller and the lifting window motor, and the output end of the rising signal detection circuit is connected with the main control unit;
The input end of the descending signal detection circuit is connected with a descending signal acquisition point, the descending signal acquisition point is positioned on a descending signal line between the switch circuit and the lifting car window motor, and the output end of the descending signal detection circuit is connected with the main control unit.
In addition, in order to achieve the above object, the present invention further provides an anti-pinch control method for a lift window motor, where the anti-pinch control method for a lift window motor is applied to an anti-pinch control circuit for the lift window motor, and the anti-pinch control method for a lift window motor includes:
when the main control unit determines that anti-clamping action needs to be executed and detects that the recoverable fuse in the switch circuit is disconnected, the main control unit outputs an anti-clamping intention signal to the driving unit;
the driving unit generates a first control signal and a second control signal according to the anti-pinch intention signal, outputs the first control signal to the lifting controller, and outputs the second control signal to the switching circuit;
The lifting controller is used for sucking the descending signal output end according to the first control signal so as to enable the descending signal output end to output a descending control signal;
The switch circuit is conducted according to the second control signal and outputs the descending control signal to the lifting car window motor.
Optionally, the method further comprises:
And the main control unit receives a falling end detection signal through the falling signal detection circuit in the anti-pinch action execution process, and after detecting that the falling end detection signal has signal change, the main control unit judges that the recoverable fuse in the switch circuit is disconnected in the anti-pinch action execution process, and executes the step of outputting an anti-pinch intention signal to the driving unit.
Optionally, before the master control unit outputs the anti-pinch intention signal to the driving unit when it is determined that the anti-pinch action needs to be performed and the recoverable fuse in the switch circuit is detected to be opened, the method further includes:
After the main control unit determines that the anti-pinch action needs to be executed, the main control unit receives a rising detection signal through a rising signal detection circuit, receives a falling detection signal through a falling signal detection circuit, and detects whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal.
Optionally, after determining that the anti-pinch action needs to be performed, the main control unit receives a rising detection signal through a rising signal detection circuit, receives a falling detection signal through a falling signal detection circuit, and detects whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal, including:
After determining that the anti-pinch action needs to be executed, the main control unit outputs a descending intention signal to the driving unit, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal;
Receiving a first detection signal through a rising signal detection circuit and receiving a second detection signal through a falling signal detection circuit;
when the first detection signal and the second detection signal determine that the lifting window motor does not execute descending action, outputting a lifting intention signal to the driving unit, so that the driving unit drives the lifting controller to suck a lifting signal output end according to the lifting intention signal;
and receiving a rising detection signal through a rising signal detection circuit, receiving a falling detection signal through a falling signal detection circuit, and detecting whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal.
Optionally, the main control unit determines that the recoverable fuse is opened when detecting that the rising detection signal changes relative to the first detection signal and the falling detection signal changes relative to the second detection signal.
Optionally, after the step of receiving the rising detection signal by the rising signal detection circuit and the step of receiving the falling detection signal by the falling signal detection circuit, the method further includes:
When the rising detection signal is detected to have no signal change relative to the first detection signal or the falling detection signal is detected to have no signal change relative to the second detection signal, judging that the falling signal output end of the lifting controller cannot be sucked;
The method further includes, after receiving the first detection signal by the rising signal detection circuit and the second detection signal by the falling signal detection circuit:
When the first detection signal is detected to be at a high level and the second detection signal is detected to be at a low level, judging that the rising signal output end of the lifting controller is adhered and the falling signal output end of the lifting controller cannot be attracted;
And when the first detection signal and the second detection signal are detected to be at high levels, judging that the rising signal output end of the lifting controller is adhered and the recoverable fuse is disconnected.
Optionally, the method further comprises:
when the main control unit detects that the ascending signal output end of the lifting controller is adhered, a descending intention signal is output to the driving unit, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal;
Stopping outputting the descending intention signal when the switch ascending signal is continuously valid and the fact that the anti-clamping action is not required to be executed is determined, so that the window glass is driven to ascend to the top by the lifting window motor;
When the vehicle window glass is detected to rise to the top end, a descending intention signal is output to the driving unit, so that the driving unit drives the lifting controller to suck the descending signal output end according to the descending intention signal.
Optionally, the method further comprises:
when the main control unit detects a switch rising signal, outputting a rising intention signal to the driving unit, so that the driving unit drives the lifting controller to suck a rising signal output end according to the rising intention signal, receives a third detection signal through a rising signal detection circuit, and receives a fourth detection signal through a falling signal detection circuit;
when the third detection signal is detected to be at a low level, judging that the rising signal output end of the lifting controller cannot be attracted;
Stopping outputting the rising intention signal when the third detection signal and the fourth detection signal are detected to be at high levels, receiving a fifth detection signal through the rising signal detection circuit, and receiving a sixth detection signal through the falling signal detection circuit;
When the fifth detection signal is detected to be at a high level or the sixth detection signal is detected to be at a high level, judging that the descending signal output end of the lifting controller is stuck, and continuously outputting a lifting intention signal to the driving unit so that the driving unit drives the lifting controller to suck the ascending signal output end according to the lifting intention signal;
When the fifth detection signal is detected to be low level and the sixth detection signal is detected to be low level, it is determined that the recoverable fuse is opened.
The anti-pinch control circuit of the lift car window motor of the invention comprises: the main control unit, the driving unit and the lifting controller are connected in sequence; the switch circuit is positioned between the descending signal output end of the lifting controller and the lifting window motor, and the input end of the switch circuit is connected with the driving unit; when the main control unit determines that anti-clamping action needs to be executed and detects that the recoverable fuse in the switch circuit is disconnected, the main control unit outputs an anti-clamping intention signal to the driving unit; the driving unit generates a first control signal and a second control signal according to the anti-pinch intention signal, outputs the first control signal to the lifting controller, and outputs the second control signal to the switching circuit; the lifting controller attracts the descending signal output end according to the first control signal so that the descending signal output end outputs a descending control signal; the switch circuit conducts according to the second control signal and outputs a descending control signal to the lifting car window motor. By the mode, when the recoverable fuse is disconnected, the control switch circuit is conducted, and a descending control signal is output to the lifting window motor, so that the anti-pinch reversing function of the lifting window motor is realized, and the failure of the anti-pinch reversing function caused by the thermal protection stopping action of the lifting window motor is avoided.
Drawings
FIG. 1 is a schematic circuit diagram of a first embodiment of an anti-pinch control circuit for a window motor of the present invention;
FIG. 2 is a schematic diagram of a lift controller of an embodiment of an anti-pinch control circuit for a lift window motor according to the present invention;
FIG. 3 is a schematic diagram of a switch circuit of an embodiment of an anti-pinch control circuit for a window motor of the present invention;
FIG. 4 is a schematic circuit diagram of a second embodiment of an anti-pinch control circuit for a window motor according to the present invention;
FIG. 5 is a schematic diagram of a detection circuit of an embodiment of an anti-pinching control circuit for a window motor according to the present invention;
FIG. 6 is a schematic flow chart of a first embodiment of an anti-pinch control method for a window motor of the present invention;
fig. 7 is a flowchart of a second embodiment of the anti-pinching control method for a window regulator according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the invention provides an anti-pinch control circuit of a lifting window motor, and referring to fig. 1, fig. 1 is a schematic circuit structure diagram of a first embodiment of the anti-pinch control circuit of the lifting window motor.
In this embodiment, the anti-pinch control circuit of the lift car window motor includes:
a main control unit 10, a driving unit 20, and a lifting controller 30 connected in sequence;
a switch circuit 40, wherein the switch circuit 40 is located between the descending signal output end of the lifting controller 30 and the lifting window motor, and the input end of the switch circuit 40 is connected with the driving unit 20;
The main control unit 10 is configured to output an anti-pinch intention signal to the driving unit 20 when it is determined that an anti-pinch action needs to be performed and it is detected that the recoverable fuse in the switching circuit 40 is opened.
It will be appreciated that the anti-pinching control circuit of the window motor of the present embodiment is provided in an Electronic Control Unit (ECU). The main control unit 10 is provided with an internal signal ap_action, and when the anti-pinch operation is not required, ap_action=0, and when the anti-pinch operation is detected to be required, ap_action is set to 1. Optionally, in this embodiment, a hall sensor for detecting the rotation speed of the window lifting motor is provided, when the hall sensor detects that the rotation speed changes, information is transmitted to the ECU, and when the information fed back by the hall sensor is received by the main control unit 10, it is determined that an anti-pinch action needs to be performed, and ap_action is set to 1; optionally, an anti-pinch module is configured to detect resistance in a glass rising process, and when the resistance is greater than a certain value, information is transmitted to the ECU, and when receiving the information fed back by the anti-pinch module, the main control unit 10 determines that an anti-pinch action needs to be performed, and sets ap_action to 1.
The recoverable fuse is turned off when the detected temperature reaches a certain value, and is turned back on after cooling. Optionally, a recoverable fuse detection circuit is provided for detecting whether the recoverable fuse is broken. In a specific implementation, if the recoverable fuse is not disconnected, the recoverable fuse is directly connected with the descending signal output end of the lifting controller 30 and the lifting window motor, and a descending control signal is output to the lifting window motor, so that the lifting window motor controls the window to descend.
It should be understood that, in this embodiment, the main control unit 10 is provided with an anti-pinch intention signal i_ap in addition to the rising intention signal i_up and the falling intention signal i_down, and outputs i_ap=1 to the driving unit 20 when it is determined that an anti-pinch action needs to be performed and a recoverable fuse break is detected, otherwise, i_ap=0. In a specific implementation, there are three types of lifting intention signals output by the main control unit 10 to the driving unit 20: rising i_up=1 & i_down=0; drop i_up=0 & i_down=1; the window is not actuated i_up=0 & i_down=0.
The driving unit 20 is configured to generate a first control signal and a second control signal according to the anti-pinch intention signal, output the first control signal to the lift controller 30, and output the second control signal to the switching circuit 40.
When the anti-pinch intention signal is received, the driving unit 20 generates a first control signal i_up=0 & i_down_out=1 and a second control signal i_ap_out=1. The driving unit 20 in this embodiment is provided with an i_ap_out signal for controlling the switching circuit 40 in addition to the rising control signal i_up_out and the falling control signal i_down_out. I_up=0 & i_down_out=1 is output to the up-down controller 30, and i_ap_out=1 is output to the switching circuit 40. In a specific implementation, there are three kinds of lift control signals output from the driving unit 20 to the lift controller 30: rising i_up_out=1 & i_down_out=0; drop i_up_out=0 & i_down_out=1; window inactivity i_up_out=0 & i_down_out=0.
The lifting controller 30 is configured to engage the falling signal output end according to the first control signal, so that the falling signal output end outputs a falling control signal.
It should be understood that the up-down controller 30, upon receiving i_down_out=1, pulls in the down signal output terminal, specifically, controls the ACC power line to be connected to the down signal output terminal, thereby outputting a down control signal.
Preferably, the lifting controller 30 of the present embodiment is a relay, referring to fig. 2, fig. 2 is a schematic diagram of the lifting controller 30 of an embodiment of an anti-pinch control circuit of the lifting window motor of the present invention; the driving unit 20 is connected to the rising signal input end and the falling signal input end of the lifting controller 30 respectively, the initial rising signal output end and the falling signal output end are both grounded, and when the driving unit 20 outputs i_up_out=1 to the rising signal input end of the lifting controller 30, the lifting controller 30 sucks the rising signal output end, so that the ACC power line is connected to the rising signal output end, and outputs a rising control signal to the lifting window motor. When the driving unit 20 outputs i_down_out=1 to the down signal input terminal of the up-down controller 30, the up-down controller 30 pulls in the down signal output terminal, so that the ACC power line is connected to the down signal output terminal, and outputs a down control signal to the up-down window motor.
The switch circuit 40 is configured to conduct according to the second control signal, and output the descent control signal to the lift window motor.
It should be appreciated that the switching circuit 40 turns on the down signal output terminal of the up-down controller 30 and the up-down window motor under the control of the second control signal, and outputs the down control signal to the up-down window motor so that the up-down window motor controls the window to be lowered. In a specific implementation, the main control unit 10 is further provided with an internal signal ap_action_f, which is used for judging whether the anti-pinching operation is performed, and setting i_up=0 & i_down=0, i_up_out=0 & i_down_out=0 after the anti-pinching operation is performed, so as to control the vehicle window to be not actuated. Optionally, the main control unit 10 determines the rotation speed of the motor through the information transmitted by the hall sensor, determines the falling distance through the rotation speed of the motor and the falling time, and controls the window lifting motor to stop reversing when the falling distance reaches the preset safety distance, so as to set ap_action_f to be 1.
It should be noted that the switching circuit 40 includes a recoverable fuse and a triode connected in parallel; the first end of the recoverable fuse is connected with the descending signal output end of the lifting controller 30, and the second end of the recoverable fuse is connected with the second end of the lifting window motor; the base of triode is connected with drive unit 20, and the projecting pole of triode is connected with the decline signal output part of lift controller 30, and the collecting electrode of triode is connected with the second end of lift door window motor. After the recoverable fuse is disconnected, if the base electrode of the triode receives the second control signal of the driving unit 20, the emitter electrode and the collector electrode are conducted, so that the descending signal output end of the lifting controller 30 and the lifting window motor are conducted.
Optionally, referring to fig. 3, fig. 3 is a schematic diagram of a switch circuit 40 of an embodiment of an anti-pinch control circuit of a window motor of the present invention; fig. 3 is only a schematic diagram, and the specific switching circuit 40 may be designed according to practical situations. After receiving the second control signal from the driving unit 20, the transistor 1 in fig. 3 turns on the terminal a and the terminal B, so that the down signal output terminal of the up-down controller 30 and the up-down window motor are turned on.
The anti-pinch control circuit of the lift window motor of this embodiment includes: a main control unit 10, a driving unit 20, and a lifting controller 30 connected in sequence; the switch circuit 40 is positioned between the descending signal output end of the lifting controller 30 and the lifting window motor, and the input end of the switch circuit 40 is connected with the driving unit 20; the main control unit 10 outputs an anti-pinch intention signal to the driving unit 20 when it is determined that an anti-pinch action needs to be performed and it is detected that the recoverable fuse in the switching circuit 40 is disconnected; the driving unit 20 generates a first control signal and a second control signal according to the anti-pinch intention signal, outputs the first control signal to the elevation controller 30, and outputs the second control signal to the switching circuit 40; the lifting controller 30 pulls the descending signal output end according to the first control signal so that the descending signal output end outputs a descending control signal; the switching circuit 40 is turned on according to the second control signal and outputs a falling control signal to the window motor. In this way, when the recoverable fuse is disconnected, the control switch circuit 40 is turned on, and outputs a descending control signal to the lifting window motor, so that the anti-pinch reversal function of the lifting window motor is realized, and the failure of the anti-pinch reversal function caused by the thermal protection stop action of the lifting window motor is avoided.
Referring to fig. 4, fig. 4 is a schematic circuit diagram of a second embodiment of an anti-pinch control circuit of a window motor according to the present invention;
Based on the first embodiment, the anti-pinch control circuit of the lift window motor of the present embodiment further includes: a rising signal detection circuit 50 and a falling signal detection circuit 60;
The input end of the rising signal detection circuit 50 is connected with a rising signal acquisition point, the rising signal acquisition point is positioned on a rising signal line between the rising signal output end of the lifting controller 30 and the lifting window motor, and the output end of the rising signal detection circuit 50 is connected with the main control unit 10;
The input end of the falling signal detection circuit 60 is connected with a falling signal acquisition point, the falling signal acquisition point is located on a falling signal line between the switch circuit 40 and the window lifting motor, and the output end of the falling signal detection circuit 60 is connected with the main control unit 10.
It should be understood that the main control unit 10 monitors the actual actions output to both ends of the motor through the up signal detection circuit 50 and the down signal detection circuit 60. In a specific implementation, after outputting the intention signal to the driving unit 20, the main control unit 10 obtains the detection signal through the rising signal detection circuit 50 and the falling signal detection circuit 60, so as to determine whether the actual motion of the motor is consistent with the control intention, and if not, the abnormality type and the abnormality occurrence position can be analyzed according to the detection signal.
The main control unit 10 is provided with a signal flag i_up_fb corresponding to the rising signal detection circuit 50 and a signal flag i_down_fb corresponding to the falling signal detection circuit 60. When the rising signal detection circuit 50 detects that there is a high potential on the rising signal line, i_up_fb is set to 1, otherwise i_up_fb is set to 0; when the high potential is detected on the falling signal line according to the falling signal detection circuit 60, i_down_fb is set to 1, otherwise i_down_fb is set to 0.
In this embodiment, a detection circuit is provided, referring to fig. 5, and fig. 5 is a schematic diagram of a detection circuit of an embodiment of an anti-pinch control circuit of a window motor of the present invention; fig. 5 is only a schematic diagram, and a specific detection circuit may be designed according to practical situations. The detection circuit in fig. 5 is a rising signal detection circuit 50 and/or a falling signal detection circuit 60, in which a capacitor is used for filtering, a zener diode is used for stabilizing voltage, and a second resistor is used for dividing voltage, so that the voltage of the line where the first resistor is located is more stable, and the master control unit 10 sets i_down_fb to 1 when detecting that the line where the first resistor is located has a high voltage through the detection circuit.
In this embodiment, the rising signal detection circuit 50 for detecting the rising signal line and the falling signal detection circuit 60 for detecting the falling signal line are provided, so that the main control unit 10 can conveniently judge whether the actual action of the motor is consistent with the control intention or not and judge whether the recoverable fuse is disconnected or not, thereby realizing the rapid detection of circuit abnormality and the anti-pinch reversal control under the thermal protection of the lifting window motor, and improving the stability and safety of the lifting window.
Referring to fig. 6, fig. 6 is a flowchart of a first embodiment of an anti-pinch control method for a window regulator according to the present invention.
As shown in fig. 6, the anti-pinch control method for a lift window motor provided by the embodiment of the invention is applied to an anti-pinch control circuit of the lift window motor, and the anti-pinch control method for the lift window motor includes:
step S10: the main control unit outputs an anti-pinch intention signal to the driving unit when determining that anti-pinch action is required to be performed and detecting that a recoverable fuse in the switch circuit is disconnected.
Step S20: the driving unit generates a first control signal and a second control signal according to the anti-pinch intention signal, outputs the first control signal to the lifting controller, and outputs the second control signal to the switching circuit.
Step S30: the lifting controller is used for sucking the descending signal output end according to the first control signal so as to enable the descending signal output end to output a descending control signal.
Step S40: the switch circuit is conducted according to the second control signal and outputs the descending control signal to the lifting car window motor.
In an embodiment, the method further comprises: and the main control unit receives a falling end detection signal through the falling signal detection circuit in the anti-pinch action execution process, and after detecting that the falling end detection signal has signal change, the main control unit judges that the recoverable fuse in the switch circuit is disconnected in the anti-pinch action execution process, and executes the step of outputting an anti-pinch intention signal to the driving unit.
It can be understood that, in the executing process of the anti-pinch action, the main control unit receives the detecting signal i_down_fb of the falling end through the detecting circuit in real time, when detecting that i_down_fb is changed from 1 to 0, the situation that the anti-pinch is not executed but PTC burns occurs, at this time, the main control unit outputs the anti-pinch intention signal i_ap=1 to the driving unit, the driving unit outputs i_ap_out=1 to the switching circuit, and outputs i_down_out=1 to the lifting controller, and the lifting controller sucks the falling signal output end, and the switching circuit switches on the falling signal output end of the lifting controller and the lifting window motor, so that the lifting window motor continues to execute the anti-pinch action.
In an embodiment, after the step S40, the method further includes: after the execution of the anti-clamping action is completed, the main control unit outputs an anti-clamping intention ending signal to the driving unit; the driving unit generates a third control signal and a fourth control signal according to the anti-pinch intention ending signal, outputs the third control signal to the lifting controller, and outputs the fourth control signal to the switching circuit; the lifting controller releases a descending signal output end according to the third control signal so as to enable the descending signal output end to stop outputting the descending control signal; and the switch circuit is disconnected according to the fourth control signal and stops outputting the descending control signal to the lifting car window motor.
It should be noted that, when the main control unit receives the information transmitted by the hall sensor and determines that the descending distance of the anti-pinch reversal of the vehicle window reaches the preset safety distance, ap_action_f is set to 1, and whether the anti-pinch action is executed is determined by identifying the value of ap_action_f. When ap_action_f=1, the main control unit outputs an anti-pinching intention ending signal i_up=0 & i_down=0 to the driving unit, the driving unit outputs a third control signal i_up_out=0 & i_down_out=0 and a fourth control signal i_ap_out=0, the lifting controller stops outputting the descending control signal according to the release descending signal output end, the switching circuit is disconnected, and the descending control signal is stopped being output to the lifting window motor, namely, the main control unit controls the lifting window motor to stop reversing after the anti-pinching action is executed.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
In the embodiment, when the main control unit determines that anti-clamping action needs to be executed and detects that the recoverable fuse in the switch circuit is disconnected, the main control unit outputs an anti-clamping intention signal to the driving unit; the driving unit generates a first control signal and a second control signal according to the anti-pinch intention signal, outputs the first control signal to the lifting controller, and outputs the second control signal to the switching circuit; the lifting controller attracts the descending signal output end according to the first control signal so that the descending signal output end outputs a descending control signal; the switch circuit conducts according to the second control signal and outputs a descending control signal to the lifting car window motor. By the mode, when the recoverable fuse is disconnected, the control switch circuit is conducted, and a descending control signal is output to the lifting window motor, so that the anti-pinch reversing function of the lifting window motor is realized, and the failure of the anti-pinch reversing function caused by the thermal protection stopping action of the lifting window motor is avoided.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details not described in detail in the present embodiment may refer to the anti-clamping control circuit of the lift car window motor provided in any embodiment of the present invention, which is not described herein.
Referring to fig. 7, fig. 7 is a flowchart of a second embodiment of an anti-pinch control method for a window regulator according to the present invention.
Based on the above-mentioned first embodiment, the anti-pinching control method for a lift window motor according to the present embodiment further includes, before the step S10:
step S101: after the main control unit determines that the anti-pinch action needs to be executed, the main control unit receives a rising detection signal through a rising signal detection circuit, receives a falling detection signal through a falling signal detection circuit, and detects whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal.
It should be understood that, the main control unit of this embodiment detects whether the lift window motor performs the anti-pinch reversal function through the up signal detection circuit and the down signal detection circuit, if the lift window motor does not perform the anti-pinch reversal function, it is determined that the recoverable fuse is disconnected, and then steps S10-S40 are performed, so that the anti-pinch reversal function is still performed when the thermal protection of the lift window motor is stopped.
Specifically, the step S101 includes: after determining that the anti-pinch action needs to be executed, the main control unit outputs a descending intention signal to the driving unit, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal; receiving a first detection signal through a rising signal detection circuit and receiving a second detection signal through a falling signal detection circuit; when the first detection signal and the second detection signal determine that the lifting window motor does not execute descending action, outputting a lifting intention signal to the driving unit, so that the driving unit drives the lifting controller to suck a lifting signal output end according to the lifting intention signal; and receiving a rising detection signal through a rising signal detection circuit, receiving a falling detection signal through a falling signal detection circuit, and detecting whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal.
When ap_action=1 is determined, the main control unit outputs i_up=0 & i_down=1 signal, and the driving unit outputs i_up_out=0 & i_down_out=1; the lifting controller is used for sucking the descending signal output end under the control of the driving unit, and the main control unit receives the i_up_FB signal through the ascending signal detection circuit and receives the i_down_FB signal through the descending signal detection circuit.
Specifically, when i_up_fb=0 (low level) and i_down_fb=1 (high level), it is determined that the window lifter motor is performing a lowering action, which indicates that the recoverable fuse is not disconnected, the main control unit controls the window lifter motor to continue performing the anti-pinch action until ap_action_f=1.
Specifically, when i_up_fb=0 and i_down_fb=0, it is determined that the lift window motor does not perform the lowering action, at which time there are two cases: the lift controller is abnormal or the fuse opening can be restored. In this embodiment, the main control unit further detects a specific anomaly type by outputting a rising intention signal, receiving a rising detection signal and a falling detection signal.
Specifically, the main control unit determines that the recoverable fuse is opened when detecting that the rising detection signal changes in signal relative to the first detection signal and the falling detection signal changes in signal relative to the second detection signal.
It should be understood that, referring to fig. 4, if the recoverable fuse is opened, the main control unit outputs a falling intention signal, the rising signal detection circuit is at a low voltage, and the falling signal detection circuit is at a low voltage, where i_up_fb=0 and i_down_fb=0; the main control unit then outputs an ascending intention signal, the driving unit controls the lifting controller to suck an ascending signal output end, the ascending signal output end is communicated with the lifting window motor, the ascending signal detection circuit jumps from low voltage to high voltage, the descending signal detection circuit jumps from low voltage to high voltage, at the moment, i_up_FB is changed from 0 to 1, and i_down_FB is changed from 0 to 1.
Further, after the rising detection signal is received by the rising signal detection circuit and the falling detection signal is received by the falling signal detection circuit, the method further includes: and when detecting that the rising detection signal does not change relative to the first detection signal or the falling detection signal does not change relative to the second detection signal, judging that the falling signal output end of the lifting controller cannot be sucked.
When i_up_fb is not changed from 0to 1 and i_down_fb is not changed from 0to 1, it is determined that the lowering signal output end of the lifting controller cannot be engaged, and the glass cannot be raised or lowered due to the failure, so that the user is prompted to repair the glass in a private store.
Further, after the first detection signal is received by the rising signal detection circuit and the second detection signal is received by the falling signal detection circuit, the method further includes: when the first detection signal is detected to be at a high level and the second detection signal is detected to be at a low level, judging that the rising signal output end of the lifting controller is adhered and the falling signal output end of the lifting controller cannot be attracted; and when the first detection signal and the second detection signal are detected to be at high levels, judging that the rising signal output end of the lifting controller is adhered and the recoverable fuse is disconnected.
It should be understood that when i_up_fb=1 and i_down_fb=0 are detected, it is determined that the up signal output end of the up-down controller is stuck and the down signal output end of the up-down controller cannot be sucked, the faulty glass will rise to the top end and continue to be driven until PTC is disconnected, prompting the user to repair to the private store. When i_up_fb=1 and i_down_fb=1 are detected, it is determined that the rising signal output end of the lifting controller is stuck and the fuse can be restored to be disconnected, the failed glass can only rise upwards, and under the condition that anti-pinch is not triggered, the embodiment allows window closing, but cannot descend after window closing, and the user is prompted to repair in a private store.
Further, the method further comprises: when the main control unit detects that the ascending signal output end of the lifting controller is adhered, a descending intention signal is output to the driving unit, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal; stopping outputting the descending intention signal when the switch ascending signal is continuously valid and the fact that the anti-clamping action is not required to be executed is determined, so that the window glass is driven to ascend to the top by the lifting window motor; when the vehicle window glass is detected to rise to the top end, a descending intention signal is output to the driving unit, so that the driving unit drives the lifting controller to suck the descending signal output end according to the descending intention signal.
In this embodiment, an exception handling manner is provided when the rising signal output end of the lifting controller is stuck. When the adhesion of the ascending signal output end of the lifting controller is detected, the descending signal output end of the lifting controller is driven to be attracted, so that the ascending loop and the descending loop of the lifting window motor are both high level, and the glass action is stopped. When a user continuously inputs a switch ascending signal, the main control unit judges whether Ap_action is equal to 1, if so, the descending signal output end of the lifting controller is continuously driven to be attracted; if not, stopping outputting the descending intention signal, enabling the lifting window motor to drive the window glass to ascend to the top end, and then continuing outputting the descending intention signal. The ascending loop and the descending loop of the lifting car window motor are both high level, and the glass action is stopped.
In an embodiment, the method further comprises: when the main control unit detects a switch rising signal, outputting a rising intention signal to the driving unit, so that the driving unit drives the lifting controller to suck a rising signal output end according to the rising intention signal, receives a third detection signal through a rising signal detection circuit, and receives a fourth detection signal through a falling signal detection circuit; when the third detection signal is detected to be at a low level, judging that the rising signal output end of the lifting controller cannot be attracted; stopping outputting the rising intention signal when the third detection signal and the fourth detection signal are detected to be at high levels, receiving a fifth detection signal through the rising signal detection circuit, and receiving a sixth detection signal through the falling signal detection circuit; when the fifth detection signal is detected to be at a high level or the sixth detection signal is detected to be at a high level, judging that the descending signal output end of the lifting controller is stuck, and continuously outputting a lifting intention signal to the driving unit so that the driving unit drives the lifting controller to suck the ascending signal output end according to the lifting intention signal; when the fifth detection signal is detected to be low level and the sixth detection signal is detected to be low level, it is determined that the recoverable fuse is opened.
It should be understood that when the main control unit detects the switch up signal, it outputs an up intention signal i_up=1 & i_down=0, the driving unit outputs i_up_out=1 & i_down_out=0, and the up-down controller sucks up the up signal output terminal under the control of the driving unit. The main control unit determines whether the window lifter motor performs a rising motion through the i_up_fb and i_down_fb signals. When i_up_fb=1 and i_down_fb=0, it is determined that the lift window motor performs a lifting action, and the window continues to move upward. When i_up_FB=0, it is determined that the rising signal output end of the lifting controller cannot be sucked, the glass can only descend due to the fault, a user cannot close a window, and the user is prompted to go to a private store for maintenance. When i_up_fb=1 and i_down_fb=1, there are two cases at this time: the lifting controller is abnormal or the fuse is disconnected, and the output of the lifting intention signal is stopped, namely i_up=0 & i_down=0; i_up_out=0 & i_down_out=0, the main control unit receives i_up_fb and i_down_fb through detection lines, when i_up_fb=1 or i_down_fb=1 is detected, the falling signal output end of the lifting controller is judged to be stuck, and the main control unit outputs rising intention signals i_up=1 & i_down=0; upon detection of i_up_fb=0 and i_down_fb=0, it is determined that the recoverable fuse opens.
In this embodiment, after determining that the anti-pinch action needs to be performed, the main control unit receives the rising detection signal through the rising signal detection circuit, receives the falling detection signal through the falling signal detection circuit, and detects whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal. The automatic anti-pinch reversing device has the advantages that the abnormal circuit is rapidly detected and the anti-pinch reversing control under the thermal protection of the lifting window motor is realized, when the recoverable fuse is disconnected, the control switch circuit is conducted, a descending control signal is output to the lifting window motor, the anti-pinch reversing function of the lifting window motor is realized, the failure of the anti-pinch reversing function caused by the thermal protection stopping action of the lifting window motor is avoided, and the stability and safety of the lifting window are improved.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (7)
1. The utility model provides a prevent pressing from both sides control circuit of lift window motor which characterized in that, lift window motor prevent pressing from both sides control circuit includes:
The main control unit, the driving unit and the lifting controller are connected in sequence;
The switching circuit is positioned between the descending signal output end of the lifting controller and the lifting window motor, and the input end of the switching circuit is connected with the driving unit;
the main control unit is used for outputting an anti-pinch intention signal to the driving unit when the main control unit determines that anti-pinch action needs to be executed and detects that the recoverable fuse in the switch circuit is disconnected;
the driving unit is used for generating a first control signal and a second control signal according to the anti-pinch intention signal, outputting the first control signal to the lifting controller and outputting the second control signal to the switching circuit;
The lifting controller is used for sucking the descending signal output end according to the first control signal so as to enable the descending signal output end to output a descending control signal;
The switch circuit is used for conducting according to the second control signal and outputting the descending control signal to the lifting car window motor;
anti-pinch control circuit of lift door window motor still includes: a rising signal detection circuit and a falling signal detection circuit;
The input end of the rising signal detection circuit is connected with a rising signal acquisition point, the rising signal acquisition point is positioned on a rising signal line between the rising signal output end of the lifting controller and the lifting window motor, and the output end of the rising signal detection circuit is connected with the main control unit;
The input end of the descending signal detection circuit is connected with a descending signal acquisition point, the descending signal acquisition point is positioned on a descending signal line between the switch circuit and the lifting car window motor, and the output end of the descending signal detection circuit is connected with the main control unit;
The main control unit is further used for outputting a descending intention signal to the driving unit after determining that the anti-pinch action needs to be executed, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal;
The main control unit is also used for receiving a first detection signal through the rising signal detection circuit and receiving a second detection signal through the falling signal detection circuit;
The main control unit is further configured to output an ascending intention signal to the driving unit when it is determined that the ascending and descending window motor does not execute the descending action according to the first detection signal and the second detection signal, so that the driving unit drives the ascending controller to suck the ascending signal output end according to the ascending intention signal;
The main control unit is also used for receiving an ascending detection signal through the ascending signal detection circuit, receiving a descending detection signal through the descending signal detection circuit, and detecting whether the recoverable fuse is disconnected according to the ascending detection signal and the descending detection signal.
2. The anti-pinch control method for the lifting window motor is characterized by being applied to an anti-pinch control circuit of the lifting window motor, and comprises the following steps of:
After determining that the anti-pinch action needs to be executed, the main control unit outputs a descending intention signal to the driving unit, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal;
Receiving a first detection signal through a rising signal detection circuit and receiving a second detection signal through a falling signal detection circuit;
when the first detection signal and the second detection signal determine that the lifting window motor does not execute descending action, outputting a lifting intention signal to the driving unit, so that the driving unit drives the lifting controller to suck a lifting signal output end according to the lifting intention signal;
Receiving a rising detection signal through a rising signal detection circuit, receiving a falling detection signal through a falling signal detection circuit, and detecting whether the recoverable fuse is disconnected according to the rising detection signal and the falling detection signal;
when the main control unit determines that anti-clamping action needs to be executed and detects that the recoverable fuse in the switch circuit is disconnected, the main control unit outputs an anti-clamping intention signal to the driving unit;
the driving unit generates a first control signal and a second control signal according to the anti-pinch intention signal, outputs the first control signal to the lifting controller, and outputs the second control signal to the switching circuit;
The lifting controller is used for sucking the descending signal output end according to the first control signal so as to enable the descending signal output end to output a descending control signal;
The switch circuit is conducted according to the second control signal and outputs the descending control signal to the lifting car window motor.
3. A method of anti-pinching control for a lift window motor according to claim 2, characterized in that the method further comprises:
And the main control unit receives a falling end detection signal through the falling signal detection circuit in the anti-pinch action execution process, and after detecting that the falling end detection signal has signal change, the main control unit judges that the recoverable fuse in the switch circuit is disconnected in the anti-pinch action execution process, and executes the step of outputting an anti-pinch intention signal to the driving unit.
4. The method for controlling the anti-pinch of a window motor according to claim 2, wherein the main control unit determines that the recoverable fuse is opened when detecting that the rising detection signal changes with respect to the first detection signal and the falling detection signal changes with respect to the second detection signal.
5. The anti-pinch control method of a lift window motor as claimed in claim 2, wherein the method further comprises, after receiving the up detection signal by the up signal detection circuit and the down detection signal by the down signal detection circuit:
When the rising detection signal is detected to have no signal change relative to the first detection signal or the falling detection signal is detected to have no signal change relative to the second detection signal, judging that the falling signal output end of the lifting controller cannot be sucked;
The method further includes, after receiving the first detection signal by the rising signal detection circuit and the second detection signal by the falling signal detection circuit:
When the first detection signal is detected to be at a high level and the second detection signal is detected to be at a low level, judging that the rising signal output end of the lifting controller is adhered and the falling signal output end of the lifting controller cannot be attracted;
And when the first detection signal and the second detection signal are detected to be at high levels, judging that the rising signal output end of the lifting controller is adhered and the recoverable fuse is disconnected.
6. A method of anti-pinching control for a lift window motor according to claim 5, further comprising:
when the main control unit detects that the ascending signal output end of the lifting controller is adhered, a descending intention signal is output to the driving unit, so that the driving unit drives the lifting controller to attract the descending signal output end according to the descending intention signal;
Stopping outputting the descending intention signal when the switch ascending signal is continuously valid and the fact that the anti-clamping action is not required to be executed is determined, so that the window glass is driven to ascend to the top by the lifting window motor;
When the vehicle window glass is detected to rise to the top end, a descending intention signal is output to the driving unit, so that the driving unit drives the lifting controller to suck the descending signal output end according to the descending intention signal.
7. A method of anti-pinching control for a lift window motor according to claim 2, characterized in that the method further comprises:
when the main control unit detects a switch rising signal, outputting a rising intention signal to the driving unit, so that the driving unit drives the lifting controller to suck a rising signal output end according to the rising intention signal, receives a third detection signal through a rising signal detection circuit, and receives a fourth detection signal through a falling signal detection circuit;
when the third detection signal is detected to be at a low level, judging that the rising signal output end of the lifting controller cannot be attracted;
Stopping outputting the rising intention signal when the third detection signal and the fourth detection signal are detected to be at high levels, receiving a fifth detection signal through the rising signal detection circuit, and receiving a sixth detection signal through the falling signal detection circuit;
When the fifth detection signal is detected to be at a high level or the sixth detection signal is detected to be at a high level, judging that the descending signal output end of the lifting controller is stuck, and continuously outputting a lifting intention signal to the driving unit so that the driving unit drives the lifting controller to suck the ascending signal output end according to the lifting intention signal;
When the fifth detection signal is detected to be low level and the sixth detection signal is detected to be low level, it is determined that the recoverable fuse is opened.
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| CN115788221A (en) * | 2022-11-30 | 2023-03-14 | 东风汽车有限公司东风日产乘用车公司 | Vehicle window control method, device, equipment and storage medium |
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