CN202847566U - Stretchable running board controller below emergency door of school bus - Google Patents
Stretchable running board controller below emergency door of school bus Download PDFInfo
- Publication number
- CN202847566U CN202847566U CN 201220511505 CN201220511505U CN202847566U CN 202847566 U CN202847566 U CN 202847566U CN 201220511505 CN201220511505 CN 201220511505 CN 201220511505 U CN201220511505 U CN 201220511505U CN 202847566 U CN202847566 U CN 202847566U
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- control circuit
- aerotron
- marking time
- flexible
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Abstract
The utility model discloses a stretchable running board controller below an emergency door of a school bus. The stretchable running board controller below the emergency door of the school bus comprises an emergency door switch detection circuit, an emergency door opening indicator light control circuit, a stretchable running board opening electromagnetic valve control circuit, a stretchable running board closing electromagnetic valve control circuit and a control single chip microcomputer. The emergency door switch detection circuit, the emergency door opening indicator light control circuit, the stretchable running board opening electromagnetic valve control circuit and the stretchable running board closing electromagnetic valve control circuit are all connected with the single chip microcomputer. The stretchable running board controller below the emergency door of the school bus has the advantages that precious time is saved for escape due to the fact that a stretchable running board is opened along with the opening of the emergency door at the same time, potential safety hazards caused by misoperation of people are avoided due to the fact that the opening and the closing of the stretchable running board are automatically controlled by the stretchable running board controller according to states of the emergency door, and driving safety is effectively guaranteed due to the fact that the emergency door is closed and the stretchable running board is controlled by the stretchable running board controller to be in a retracted state in a normal driving process.
Description
Technical field
The utility model relates to the flexible controller of marking time under a kind of safety of school bus door.
Background technology
School bus is an important branch in present passenger vehicle field, and the performance of school bus is the focus that people pay close attention to, and the safety performance of school bus is the most important thing of people's concern especially.Be convenient escape in case of emergency, GB stipulates that special-purpose school bus must be equipped with safe emergency door.But because the ground Clearance of safe emergency door is larger, some school bus is designed with flexible step device below safe emergency door, in order to reduce the ground Clearance of safety door, be conducive to the student and withdraw fast accident vehicle.Usually, flexible marking time controlled by the shift knob on the pilot control instrument desk, so just has following hidden danger:
1, after the personnel of looking after open safety door, chaufeur is not pressed the door open button on the instrument desk, so just causes the step ground Clearance of getting off larger, inconvenient student's fast-escape;
2, safety door is opened, and flexible the marking time under it does not stretched out, and when the student was getting off, if this moment, chaufeur was pressed suddenly door open button, flexible marking time just might be got to the student when stretching out, easily the student is caused secondary injury;
3, safety door is opened, and flexible the marking time under it stretched out, flexible upper just the standing during the student of marking time, if this moment, chaufeur was pressed suddenly door close button, flexible marking time can automatic drawing back, easily the student is caused secondary injury;
4, after shutting safety door, if forgetting, chaufeur presses door close button, this moment, flexible marking time can remain on the state of stretching out always, had potential safety hazard during driving.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, and the flexible controller of marking time under a kind of safety of school bus door is provided.
To achieve these goals, the utility model adopts following technical scheme:
The flexible controller of marking time under a kind of safety of school bus door comprises that safety door switch testing circuit, safety door are opened indicating lamp control circuit, flexible marking time opened solenoid valve control circuit, flexible mark time shut electromagnetic valve control circuit, main control circuit; Wherein, safety door switch testing circuit, safety door open indicating lamp control circuit, flexible mark time open solenoid valve control circuit, the flexible shut electromagnetic valve control circuit of marking time is connected with main control circuit respectively, described main control circuit is micro controller system.
Described safety door switch testing circuit is: the flexible controller working signal testing circuit of marking time, collecting electrode by the aerotron in the photoelectrical coupler is connected with the RA0 pin of micro controller system, the grounded emitter of aerotron in the photoelectrical coupler, the collecting electrode of the interior aerotron of photoelectrical coupler was connected a resistance and was connected with the 5V power supply, the positive pole of the light-emitting diode in the photoelectrical coupler connects the 5V power supply by a resistance, and the negative pole of light-emitting diode is by a safety door switch ground connection; Described photoelectrical coupler causes the damage of micro controller system when being used for avoiding limit switch wrong line, the safety door switch testing circuit is that ground connection is effective.
Described safety door is opened indicating lamp control circuit: first pin connect 24V power supply, second pin connect 24V power supply, the 3rd pin by door open indicator lamp ground connection, the 4th pin is connected with the pin RC0 of micro controller system by aerotron, a resistance; the collecting electrode of the 4th pin connecting triode wherein; the base stage of resistance connecting triode; the grounded emitter of aerotron; in parallel electromagnetic relay and diode between second pin and the 4th pin; a switch is set between the first pin and the 3rd pin, and described diode is for the protection of aerotron.
Described flexible marking time opened solenoid valve control circuit and be: first pin connects the 24V power supply; second pin connects the 24V power supply; the 3rd pin opened electromagnetic valve ground connection by flexible marking time; the 4th pin passes through aerotron; a resistance is connected with the pin RC1 of micro controller system; the collecting electrode of the 4th pin connecting triode wherein; the base stage of resistance connecting triode; the grounded emitter of aerotron; in parallel electromagnetic relay and diode between second pin and the 4th pin; a switch is set between the first pin and the 3rd pin, and described diode is for the protection of aerotron.
The described flexible shut electromagnetic valve control circuit of marking time is: first pin connects the 24V power supply; second pin connects the 24V power supply; the 3rd pin is by the flexible shut electromagnetic valve ground connection of marking time; the 4th pin passes through aerotron; a resistance is connected with the pin RC2 of micro controller system; the collecting electrode of the 4th pin connecting triode wherein; the base stage of resistance connecting triode; the grounded emitter of aerotron; in parallel electromagnetic relay and diode between second pin and the 4th pin; a switch is set between the first pin and the 3rd pin, and described diode is for the protection of aerotron.
Described safety door switch testing circuit: SK1 is that safety door is opened switch; When safety door was closed, corresponding detector switch was opened, and the photoelectrical coupler of its connection provides high level signal to the master control micro controller system; And when safety door was opened, the moving contact of corresponding detector switch made its closed ground connection, and the photoelectrical coupler of its connection provides low level signal to the master control micro controller system; The master control micro controller system utilizes RA0 detection safety door to be in the state of opening or closing.
Safety door is opened indicating lamp control circuit: when the RC0 of micro controller system pin output low level, and not conducting of aerotron Q1, the 4th pin is earth-free, the first pin and the 3rd not conducting of pin; When the RC0 of micro controller system pin output high level, the aerotron conducting, the 4th pin ground connection, electromagnetic relay makes the first pin and the 3rd pin conducting with the switch closure between the first pin and the 3rd pin, and it is bright that door is opened indicator lamp.
Flexible marking time opened solenoid valve control circuit: when the RC1 of micro controller system pin output low level, and not conducting of aerotron Q2, the 4th pin is earth-free, the first pin and the 3rd not conducting of pin; When the RC1 of micro controller system pin output high level, aerotron Q2 conducting, the 4th pin ground connection, electromagnetic relay makes the first pin and the 3rd pin conducting with the switch closure between the first pin and the 3rd pin, and flexible marking time opened the electromagnetic valve action.
The flexible shut electromagnetic valve control circuit of marking time: when the RC2 of micro controller system pin output low level, not conducting of aerotron Q3, the 4th pin is earth-free, the first pin and the 3rd not conducting of pin; When the RC2 of micro controller system pin output high level, aerotron Q3 conducting, the 4th pin ground connection, electromagnetic relay makes the first pin and the 3rd pin conducting with the switch closure between the first pin and the 3rd pin, the flexible shut electromagnetic valve action of marking time.
Algorithm is as follows:
(1), when opening safety door, safety door switch is connected, micro controller system RA0 pin receives low level signal:
(1-1), RC0 pin output high level, safety door is opened indicating lamp control circuit work, it is bright that driving gate is opened indicator lamp;
(1-2), the RC1 pin exports a high level that continues a second immediately, flexible marking time opened solenoid valve control circuit work one second, drove flexible marking time and opened the electromagnetic valve action, will stretching under the driving of aerodynamic force marks time stretches out and keeps this state;
(1-3), RC2 pin output low level, the flexible shut electromagnetic valve control circuit of marking time is not worked;
(2), during the closed safe door, safety door switch SK1 disconnects, micro controller system RA0 pin receives high level signal:
(2-1), RC0 pin output low level, safety door is opened indicating lamp control circuit and is not worked, door is opened indicator lamp and is extinguished;
(2-2), RC1 pin output low level, flexible marking time opened solenoid valve control circuit and do not worked;
(2-3), the RC2 pin exports a high level that continues a second immediately, the flexible shut electromagnetic valve control circuit work one second of marking time drives the flexible shut electromagnetic valve action of marking time, will stretching under the driving of aerodynamic force marks time regains and keeps this state.
The state that the utility model is opened, closed by detecting safety door, can realize following functions:
When 1, safety door was in open mode, the flexible controller of marking time drives door on the instrument desk, and to open indicator lamp bright, reminds the driver that the door of taking care is in open mode;
When 2, looking after personnel and open safety door, flexible mark time controller automatically flexible the marking time of control open the electromagnetic valve action once, make flexible marking time be in open mode;
When 3, looking after personnel and shut safety door, control is flexible automatically marks time the shut electromagnetic valve action once for the flexible controller of marking time, and makes flexible marking time be in retracted state;
The beneficial effects of the utility model:
1, flexible opening with opening simultaneously of safety door of marking time moved, for the valuable time has been saved in escape;
2, flexible opening/closing of marking time is controlled according to the state of safety door automatically by the flexible controller of marking time, and has avoided the improper potential safety hazard that causes of manual operation;
When 3, normally driving a vehicle, safety door is in closed condition, and flexible flexible the marking time of controller control of marking time is in retracted state, and actv. has guaranteed the safety of driving.
Description of drawings
Fig. 1 is schematic circuit diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
The flexible controller of marking time under a kind of special-purpose safety of school bus door comprises that safety door switch testing circuit, safety door are opened indicating lamp control circuit, flexible marking time opened solenoid valve control circuit, flexible five parts such as shut electromagnetic valve control circuit, control single chip computer of marking time.Wherein, safety door switch testing circuit, safety door open indicating lamp control circuit, flexible mark time open solenoid valve control circuit, the flexible shut electromagnetic valve control circuit of marking time is connected with micro controller system respectively.
Described safety door switch testing circuit is: the flexible controller working signal testing circuit of marking time, be connected with the RA0 pin of micro controller system by photoelectrical coupler OP1, cause the damage of micro controller system here when utilizing photoelectrical coupler can avoid limit switch contingency wrong line (becoming just to control such as the negative control of safety door switch misconnection), the safety door switch testing circuit is that ground connection is effective.
Described safety door is opened indicating lamp control circuit: a pin connects 24V power supply, b pin and connects 24V power supply, c pin and connect that door is opened indicator lamp, the g pin is connected with micro controller system by aerotron Q1; the grounded emitter of aerotron; base stage is connected with the pin RC0 of micro controller system by resistance; also be connected with the diode D1 for the protection of aerotron Q1 on the electromagnetic relay, diode is connected with the collecting electrode of aerotron.
Described flexible marking time opened solenoid valve control circuit and is: a pin connect 24V power supply, b pin connect 24V power supply, c pin connect flexible mark time open electromagnetic valve, the g pin is connected with micro controller system by aerotron Q2; the grounded emitter of aerotron; base stage is connected with the pin RC1 of micro controller system by resistance; also be connected with the diode D2 for the protection of aerotron Q2 on the electromagnetic relay, diode is connected with the collecting electrode of aerotron.
The described flexible shut electromagnetic valve control circuit of marking time is: a pin connects 24V power supply, b pin and connects that 24V power supply, c pin connect the flexible shut electromagnetic valve of marking time, the g pin is connected with micro controller system by aerotron Q3; the grounded emitter of aerotron; base stage is connected with the pin RC2 of micro controller system by resistance; also be connected with the diode D3 for the protection of aerotron Q3 on the electromagnetic relay, diode is connected with the collecting electrode of aerotron.
Principle of work is as follows:
Safety door switch testing circuit: SK1 is that safety door is opened switch.When safety door was closed, corresponding detector switch was opened, and the photoelectrical coupler of its connection provides high level signal to the master control micro controller system; And when safety door was opened, the moving contact of corresponding detector switch made its closed ground connection, and the photoelectrical coupler of its connection provides low level signal to the master control micro controller system.The master control micro controller system utilizes RA0 detection safety door to be in the state of opening or closing.
Safety door is opened indicating lamp control circuit: when the RC0 of micro controller system pin output low level, and not conducting of aerotron Q1, the g pin is earth-free, a pin and the not conducting of c pin; When the RC0 of micro controller system pin output high level, aerotron Q1 conducting, g pin ground connection, a pin and the conducting of c pin, it is bright that door is opened indicator lamp.
Flexible marking time opened solenoid valve control circuit: when the RC1 of micro controller system pin output low level, and not conducting of aerotron Q2, the g pin is earth-free, a pin and the not conducting of c pin; When the RC1 of micro controller system pin output high level, aerotron Q2 conducting, g pin ground connection, a pin and the conducting of c pin, flexible marking time opened the electromagnetic valve action.
The flexible shut electromagnetic valve control circuit of marking time: when the RC2 of micro controller system pin output low level, not conducting of aerotron Q3, the g pin is earth-free, a pin and the not conducting of c pin; When the RC2 of micro controller system pin output high level, aerotron Q3 conducting, g pin ground connection, a pin and the conducting of c pin, the flexible shut electromagnetic valve action of marking time.
Embodiment: during use, the flexible controller of marking time under the school bus safety door is connected with corresponding function on the car by wire, can realizes following functions:
(1), when opening safety door, safety door switch is connected, micro controller system RA0 pin receives low level signal:
(1-1), RC0 pin output high level, safety door is opened indicating lamp control circuit work, it is bright that driving gate is opened indicator lamp;
(1-2), the RC1 pin exports a high level that continues a second immediately, flexible marking time opened solenoid valve control circuit work one second, drove flexible marking time and opened the electromagnetic valve action, will stretching under the driving of aerodynamic force marks time stretches out and keeps this state;
(1-3), RC2 pin output low level, the flexible shut electromagnetic valve control circuit of marking time is not worked.
(2), during the closed safe door, safety door switch SK1 disconnects, micro controller system RA0 pin receives high level signal:
(2-1), RC0 pin output low level, safety door is opened indicating lamp control circuit and is not worked, door is opened indicator lamp and is extinguished;
(2-2), RC1 pin output low level, flexible marking time opened solenoid valve control circuit and do not worked;
(2-3), the RC2 pin exports a high level that continues a second immediately, the flexible shut electromagnetic valve control circuit work one second of marking time drives the flexible shut electromagnetic valve action of marking time, will stretching under the driving of aerodynamic force marks time regains and keeps this state.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (9)
1. the flexible controller of marking time under the safety of school bus door is characterized in that, comprises that safety door switch testing circuit, safety door are opened indicating lamp control circuit, flexible marking time opened solenoid valve control circuit, flexible mark time shut electromagnetic valve control circuit, main control circuit; Wherein, safety door switch testing circuit, safety door open indicating lamp control circuit, flexible mark time open solenoid valve control circuit, the flexible shut electromagnetic valve control circuit of marking time is connected with main control circuit respectively, described main control circuit is micro controller system.
2. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 1, it is characterized in that, described safety door switch testing circuit is: the flexible controller working signal testing circuit of marking time, collecting electrode by the aerotron in the photoelectrical coupler is connected with the RAO pin of micro controller system, the grounded emitter of aerotron in the photoelectrical coupler, the collecting electrode of the interior aerotron of photoelectrical coupler was connected a resistance and was connected with power supply, the positive pole of the light-emitting diode in the photoelectrical coupler connects power supply by a resistance, and the negative pole of light-emitting diode is by a safety door switch ground connection; Described photoelectrical coupler causes the damage of micro controller system when being used for avoiding limit switch wrong line, the safety door switch testing circuit is that ground connection is effective.
3. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 1; it is characterized in that; described safety door is opened indicating lamp control circuit: first pin connects power supply; second pin connects power supply; the 3rd pin opened indicator lamp ground connection by door; the 4th pin passes through aerotron; a resistance is connected with the pin RCO of micro controller system; the collecting electrode of the 4th pin connecting triode wherein; the base stage of resistance connecting triode; the grounded emitter of aerotron; in parallel electromagnetic relay and diode between second pin and the 4th pin; a switch is set between the first pin and the 3rd pin, and described diode is for the protection of aerotron.
4. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 1; it is characterized in that; described flexible marking time opened solenoid valve control circuit and be: first pin connects power supply; second pin connects power supply; the 3rd pin opened electromagnetic valve ground connection by flexible marking time; the 4th pin passes through aerotron; a resistance is connected with the pin RC1 of micro controller system; the collecting electrode of the 4th pin connecting triode wherein; the base stage of resistance connecting triode; the grounded emitter of aerotron; in parallel electromagnetic relay and diode between second pin and the 4th pin; a switch is set between the first pin and the 3rd pin, and described diode is for the protection of aerotron.
5. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 1; it is characterized in that; the described flexible shut electromagnetic valve control circuit of marking time is: first pin connects power supply; second pin connects power supply; the 3rd pin is by the flexible shut electromagnetic valve ground connection of marking time; the 4th pin passes through aerotron; a resistance is connected with the pin RC2 of micro controller system; the collecting electrode of the 4th pin connecting triode wherein; the base stage of resistance connecting triode; the grounded emitter of aerotron; in parallel electromagnetic relay and diode between second pin and the 4th pin; a switch is set between the first pin and the 3rd pin, and described diode is for the protection of aerotron.
6. the flexible controller of marking time under a kind of safety of school bus door as claimed in claim 2 is characterized in that described safety door switch testing circuit: SK1 is that safety door is opened switch; When safety door was closed, corresponding detector switch was opened, and the photoelectrical coupler of its connection provides high level signal to the master control micro controller system; And when safety door was opened, the moving contact of corresponding detector switch made its closed ground connection, and the photoelectrical coupler of its connection provides low level signal to the master control micro controller system; The master control micro controller system utilizes RAO detection safety door to be in the state of opening or closing.
7. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 3, it is characterized in that safety door is opened indicating lamp control circuit: when the RCO of micro controller system pin output low level, not conducting of aerotron, the 4th pin is earth-free, the first pin and the 3rd not conducting of pin; When the RCO of micro controller system pin output high level, the aerotron conducting, the 4th pin ground connection, electromagnetic relay makes the first pin and the 3rd pin conducting with the switch closure between the first pin and the 3rd pin, and it is bright that door is opened indicator lamp.
8. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 4, it is characterized in that flexible marking time opened solenoid valve control circuit: when the RC1 of micro controller system pin output low level, not conducting of aerotron, the 4th pin is earth-free, the first pin and the 3rd not conducting of pin; When the RC1 of micro controller system pin output high level, the aerotron conducting, the 4th pin ground connection, electromagnetic relay makes the first pin and the 3rd pin conducting with the switch closure between the first pin and the 3rd pin, and flexible marking time opened the electromagnetic valve action.
9. the controller of marking time stretches under a kind of safety of school bus door as claimed in claim 5, it is characterized in that the flexible shut electromagnetic valve control circuit of marking time: when the RC2 of micro controller system pin output low level, not conducting of aerotron, the 4th pin is earth-free, the first pin and the 3rd not conducting of pin; When the RC2 of micro controller system pin output high level, the aerotron conducting, the 4th pin ground connection, electromagnetic relay makes the first pin and the 3rd pin conducting with the switch closure between the first pin and the 3rd pin, the flexible shut electromagnetic valve action of marking time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511505 CN202847566U (en) | 2012-10-08 | 2012-10-08 | Stretchable running board controller below emergency door of school bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511505 CN202847566U (en) | 2012-10-08 | 2012-10-08 | Stretchable running board controller below emergency door of school bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202847566U true CN202847566U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220511505 Expired - Fee Related CN202847566U (en) | 2012-10-08 | 2012-10-08 | Stretchable running board controller below emergency door of school bus |
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| CN (1) | CN202847566U (en) |
Cited By (9)
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| CN102910117A (en) * | 2012-10-08 | 2013-02-06 | 中通客车控股股份有限公司 | Controller for telescopic footboard below school bus emergency exit and control method of controller |
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2012
- 2012-10-08 CN CN 201220511505 patent/CN202847566U/en not_active Expired - Fee Related
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| CN102910117B (en) * | 2012-10-08 | 2015-05-20 | 中通客车控股股份有限公司 | Controller for telescopic footboard below school bus emergency exit and control method of controller |
| CN102910117A (en) * | 2012-10-08 | 2013-02-06 | 中通客车控股股份有限公司 | Controller for telescopic footboard below school bus emergency exit and control method of controller |
| US10821903B2 (en) | 2013-09-27 | 2020-11-03 | Lund, Inc. | Modular rail and step system |
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| US11713012B2 (en) | 2015-06-05 | 2023-08-01 | Lund Motion Products, Inc. | Retractable step and side bar assembly for raised vehicle |
| US11260798B2 (en) | 2015-06-05 | 2022-03-01 | Lund Motion Products, Inc. | Horizontal retractable vehicle step |
| US11180100B2 (en) | 2015-06-05 | 2021-11-23 | Lund Motion Products, Inc. | Retractable step and side bar assembly for raised vehicle |
| US10195997B2 (en) | 2015-06-05 | 2019-02-05 | Lund Motion Products, Inc. | Horizontal retractable vehicle step |
| US11999309B2 (en) | 2015-06-05 | 2024-06-04 | Lund Motion Products, Inc. | Retractable step and side bar assembly for raised vehicle |
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