CN112713888B - Touch-slide switch circuit and display card - Google Patents
Touch-slide switch circuit and display card Download PDFInfo
- Publication number
- CN112713888B CN112713888B CN202011101994.8A CN202011101994A CN112713888B CN 112713888 B CN112713888 B CN 112713888B CN 202011101994 A CN202011101994 A CN 202011101994A CN 112713888 B CN112713888 B CN 112713888B
- Authority
- CN
- China
- Prior art keywords
- circuit
- touch
- control
- switch
- main controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
- H03K17/284—Modifications for introducing a time delay before switching in field effect transistor switches
Landscapes
- Keying Circuit Devices (AREA)
- Electronic Switches (AREA)
Abstract
一种触控滑动开关机电路和显示卡，其中，触控滑动开关机电路通过采用第一触控按键、第二触控按键以及触控电路，实现了对机械按键的取代，解决了传统的开关机电路中存在的机械按键寿命较短的问题，且通过采用延时电路和开关电路，使得在触摸了第一触控按键后的预设时长内触摸第二触控按键时(即在预设时长内由第一触控按键滑动到第二触控按键时)，开关电路才会导通或关断，以控制主控制器开机或关机，避免出现由于误触碰到第一触控按键或第二触控按键而造成误操作的情况出现。即本实施例中的触控滑动开关机电路解决了传统的显示卡开关机电路中存在机械按键容易出现误触碰和寿命较短的问题。
A touch-sliding switch circuit and a display card, wherein the touch-sliding switch circuit replaces mechanical keys by using a first touch key, a second touch key, and a touch circuit, thereby solving the problem of short life of mechanical keys in traditional switch circuits, and by using a delay circuit and a switch circuit, when the second touch key is touched within a preset time after the first touch key is touched (i.e., when the first touch key slides to the second touch key within the preset time), the switch circuit will be turned on or off to control the main controller to turn on or off, thereby avoiding the occurrence of erroneous operation caused by accidentally touching the first touch key or the second touch key. That is, the touch-sliding switch circuit in this embodiment solves the problem of mechanical keys being easily accidentally touched and having a short life in traditional display card switch circuits.
Description
Technical Field
The application belongs to the technical field of startup and shutdown control, and particularly relates to a touch sliding startup and shutdown circuit and a display card.
Background
At present, a traditional intelligent display card, such as an integrated circuit card (INTEGRATED CIRCUIT CARD, IC card) with a display function, generally uses mechanical keys to realize startup and shutdown, but the mechanical keys on the display card have poor hand feeling due to thinner cards, the keys are easy to be pressed down or pressed for a plurality of times in the realization operation, the service life of the mechanical keys is short, the sensitivity is reduced after long-time use, and the invalid times of the keys are increased.
Therefore, the traditional display card on-off circuit has the problems that the mechanical keys are easy to touch by mistake and the service life is short.
Disclosure of Invention
The application aims to provide a touch sliding on-off circuit and a display card, and aims to solve the problems that a mechanical key is easy to touch by mistake and the service life is short in the traditional on-off circuit of the display card.
The first aspect of the embodiment of the present application provides a touch sliding switch circuit, which is connected between a battery and a main controller, and the touch sliding switch circuit includes:
the first touch key is used for inputting a first touch signal;
The second touch key is used for inputting a second touch signal;
The touch control circuit is connected with the first touch control key and the second touch control key, and is used for outputting a first voltage signal at a first output end according to the first touch control signal and outputting a second voltage signal at a second output end according to the second touch control signal;
A delay circuit connected with the first output end of the touch control circuit for receiving the first voltage signal and continuously outputting a driving voltage signal within a preset time period, and
The switch circuit is connected with the touch control circuit, the delay circuit, the battery and the main controller and is used for controlling the on-off of the main controller under the control of the driving voltage signal and the second voltage signal at the same time so as to control the on-off of the main controller.
In one embodiment, the touch sliding switch circuit specifically includes that when the main controller is in a power-off state, after the switch circuit is turned on under the simultaneous control of the driving voltage signal and the second voltage signal, the main controller is turned on and outputs a first control signal to maintain the switch circuit to be turned on;
when the main controller is in a starting-up state, the switching circuit outputs a trigger signal to the main controller under the control of the driving voltage signal and the second voltage signal, and the main controller outputs a second control signal to control the switching circuit to be disconnected under the control of the trigger signal.
In one embodiment, the switching circuit includes:
The control circuit is connected with the touch control circuit and the delay circuit and is used for controlling the driving voltage signal and the second voltage signal to be conducted to the ground at the same time;
a switch sub-circuit connected in series between the battery and the power supply terminal of the main controller, the control terminal of the switch sub-circuit being connected to the control circuit, the switch sub-circuit being configured to be turned on when the control circuit is turned on to ground to turn on the battery and the power supply terminal of the main controller, and
And the pull-down circuit is connected with the control end of the switch sub-circuit and the ground, the control end of the pull-down circuit is connected with the main controller, and the pull-down circuit is used for being conducted under the control of the main controller so as to maintain the switch sub-circuit to be conducted.
In one embodiment, the switch circuit further comprises a detection circuit, the detection circuit is connected with the control circuit and a detection pin of the main controller, the detection circuit is used for outputting a trigger signal to the main controller when the control circuit is conducted to the ground, and the main controller is further used for controlling the pull-down circuit to be turned off under the triggering of the trigger signal so as to control the switch sub-circuit to be turned off.
In one embodiment, the control circuit comprises a first resistor, a first switching tube and a second switching tube, wherein a first end of the first resistor is connected with the battery, the first switching tube and the second switching tube are connected between a second end of the first resistor and the ground in series, the second end of the first resistor is connected with a control end of the switching sub-circuit, the control end of the first switching tube is connected with the delay circuit, and the control end of the second switching tube is connected with the touch control circuit.
In one embodiment, the detection circuit comprises a first diode, wherein the cathode of the first diode is connected with the high potential end of the first switch tube, and the anode of the first diode is connected with the main controller.
In one embodiment, the switch sub-circuit comprises a second resistor and a third switch tube, wherein the first end of the second resistor and the high-potential end of the third switch tube are commonly connected with the battery, the second end of the second resistor and the control end of the third switch tube are commonly connected with the control circuit and the pull-down circuit, and the low-potential end of the third switch tube is connected with the power end of the main controller.
In one embodiment, the pull-down circuit comprises a fourth switching tube, wherein the high potential end of the fourth switching tube is connected with the control end of the switch sub-circuit, the low potential end of the fourth switching tube is grounded, and the control end of the fourth switching tube is connected with the main controller.
In one embodiment, the delay circuit includes a second diode, a first capacitor and a third resistor, wherein an anode of the second diode is connected with the touch circuit, a cathode of the second diode, a first end of the first capacitor and a first end of the third resistor are commonly connected with the control circuit, and a second end of the first capacitor and a second end of the third resistor are grounded.
A second aspect of an embodiment of the present application provides a display card, including:
A battery;
A main controller, and
According to the touch sliding on-off circuit in the first aspect of the embodiment of the application, the touch sliding on-off circuit is connected with the main controller and the battery.
In one embodiment, the display card further includes a display screen, and the first touch key and the second touch key are disposed on an inner surface of the display screen.
According to the touch sliding switch circuit, the first touch key, the second touch key and the touch circuit are adopted, so that the mechanical key is replaced, the problem that the service life of the mechanical key is short in a traditional switch circuit is solved, and the delay circuit and the switch circuit are adopted, so that when the second touch key is touched within the preset time after the first touch key is touched (namely, when the first touch key slides to the second touch key within the preset time), the switch circuit is turned on or turned off to control the main controller to switch on or off, and the situation that misoperation is caused by mistakenly touching the first touch key or the second touch key is avoided. Namely, the touch sliding switch circuit in the embodiment solves the problems that the mechanical keys in the traditional display card switch circuit are easy to touch by mistake and have short service life.
Drawings
Fig. 1 is a schematic circuit diagram of a touch sliding switch circuit according to an embodiment of the application;
FIG. 2 is a schematic circuit diagram of a switch circuit of the touch sliding switch circuit shown in FIG. 1;
FIG. 3 is a schematic diagram of the touch-control sliding power on/off circuit shown in FIG. 1;
FIG. 4-a is a schematic diagram of an exemplary circuit of the touch slide switch circuit shown in FIG. 3;
Fig. 4-b is another schematic circuit diagram of the touch sliding power on/off circuit shown in fig. 3.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. 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 application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Fig. 1 shows a schematic circuit diagram of a touch sliding power on/off circuit 10 according to a first aspect of the present embodiment, and for convenience of explanation, only the relevant parts of the present embodiment are shown, which is described in detail below:
The touch sliding switch circuit 10 in this embodiment is connected between the battery 20 and the main controller 30, and the touch sliding switch circuit 10 includes a first touch key 100, a second touch key 200, a touch circuit 300, a delay circuit 400 and a switch circuit 500, wherein the first touch key 100 is connected with a first input end of the touch circuit 300, the second touch key 200 is connected with a second input end of the touch circuit 300, a first output end of the touch circuit 300 is connected with the delay circuit 400, the delay circuit 400 is connected with a first control end of the switch circuit 500, a second output end of the touch circuit 300 is connected with a second control end of the switch circuit 500, an input end of the switch circuit 500 is connected with the battery 20, and an output end of the switch circuit 500 is connected with the main controller 30. The first touch key 100 is used for inputting a first touch signal, the second touch key 200 is used for inputting a second touch signal, the touch circuit 300 is used for outputting a first voltage signal at a first output end according to the first touch signal and outputting a second voltage signal at a second output end according to the second touch signal, the delay circuit 400 is used for receiving the first voltage signal and continuously outputting a driving voltage signal for a preset duration, and the switch circuit 500 is used for controlling to be turned on or turned off under the control of the driving voltage signal and the second voltage signal at the same time so as to control the start-up or the shutdown of the main controller 30.
It should be appreciated that the main controller 30 is a control system for an electronic device, such as a microprocessor such as a single-chip microcomputer.
It should be understood that the first touch key 100 and the second touch key 200 in this embodiment are capacitive sensing touch keys. Optionally, the first touch key 100 and the second touch key 200 output a low-level signal when no finger is detected, and when the first touch key 100 detects a touch operation, that is, when the first touch key 100 detects a finger, the first touch key outputs a first touch signal, where the first touch signal is a high-level signal. When the second touch key 200 detects a touch operation, that is, when the second touch key 200 detects a finger, a second touch signal is output, and the second touch signal is a high level signal.
It should be understood that the first output terminal of the touch circuit 300 outputs a low level signal when the first touch signal is not received, and the second output terminal of the touch circuit 300 outputs a low level signal when the second touch signal is not received.
Optionally, the touch circuit 300 includes one or two capacitive touch chips. For example, when the touch circuit 300 includes a capacitive touch chip, the first touch key 100 and the second touch key 200 are respectively connected to two input terminals of the capacitive touch chip, two output terminals of the capacitive touch chip are respectively used for outputting a first voltage signal and a second voltage signal, and the type of the capacitive touch chip can be BS83B02L. When the touch circuit 300 includes two capacitive touch chips, one capacitive touch chip corresponds to one touch key, that is, the touch circuit 300 includes a first capacitive C1 touch chip and a second capacitive touch chip, an input end of the first capacitive C1 touch chip is connected to the first touch key 100, an output end of the first capacitive C1 touch chip is used for outputting a first voltage signal, an input end of the second capacitive touch chip is connected to the second touch key 200, and an output end of the second capacitive touch chip is used for outputting a second voltage signal. It should be understood that the first voltage signal and the second voltage signal are high level signals, wherein the output end of the first capacitive C1 touch chip is the first output end of the touch circuit 300, and the output end of the second capacitive touch chip is the second output end of the touch circuit 300.
Alternatively, the delay circuit 400 may be formed of an energy storage capacitor, when the touch circuit 300 outputs the first voltage signal, the delay circuit 400 is charged to store the first voltage signal, and after the touch circuit does not output the first voltage signal, the delay circuit 400 starts to output the first voltage signal (delayed first voltage signal) to the switch circuit 500 as the driving voltage signal, so that the delayed output of the first voltage signal is realized. In other embodiments, delay circuit 400 may also be comprised of a delay.
Alternatively, the switching circuit 500 may be constituted by a controllable electronic switch such as a switching tube.
The touch sliding switch circuit 10 in this embodiment realizes the replacement of the mechanical keys by adopting the first touch key 100, the second touch key 200 and the touch circuit 300, solves the problems of difficult pressing, short service life and easy invalid operation due to short service life of the mechanical keys in the traditional switch circuit, and by adopting the delay circuit 400 and the switch circuit 500, when the second touch key 200 is touched within a preset time period after the first touch key 100 is touched (i.e. when the first touch key 100 slides to the second touch key 200 within the preset time period), the switch circuit 500 is turned on or off so as to control the main controller 30 to be turned on or off, thereby avoiding the occurrence of misoperation caused by the false touch to the first touch key 100 or the second touch key 200. That is, the touch sliding switch circuit 10 in the embodiment solves the problems that the mechanical keys in the traditional switch circuit are easy to be touched by mistake and have shorter service life.
In one embodiment, the touch sliding power on/off circuit 10 specifically includes:
When the main controller is in a shutdown state, the switching circuit is controlled to be conducted under the control of the driving voltage signal and the second voltage signal, and then the main controller is started and outputs a first control signal to maintain the switching circuit to be conducted;
When the main controller is in a starting state, the switching circuit outputs a trigger signal to the main controller under the control of the driving voltage signal and the second voltage signal, and the main controller outputs a second control signal to control the switching circuit to be disconnected under the control of the trigger signal.
It should be appreciated that the first control signal and the second control signal may be two level signals having opposite level states, for example, the first control signal may be a level signal having a high level state, and the second control signal may be a level signal having a low level state. The trigger signal may be a pulse signal or a voltage signal, etc.
It will be appreciated that when the switching circuit is open, the main controller shuts down due to a loss of power.
In this embodiment, when the main controller is in the off state, the switch circuit is controlled to be turned on according to the driving voltage signal and the second voltage signal, so that the main controller is turned on, and after the power supply of the main controller receives the voltage signal, the main controller can output the first control signal to the switch circuit to maintain the switch circuit to be turned on, so that the on state can be maintained after the first touch key and the second touch key no longer output the first touch signal and the second touch signal. And when the main controller receives the trigger signal in the starting state, the main controller outputs a second control signal to the switching circuit, so that the switching circuit is controlled to be disconnected, and the shutdown operation is realized. Namely, in the touch sliding switch circuit in this embodiment, the switching between the on state and the off state of the main controller is realized by the driving voltage signal and the second voltage signal (which is equivalent to the sliding gesture between the first touch key and the second touch key).
Referring to FIG. 2, in one embodiment, the switching circuit 500 includes a control circuit 510, a switching sub-circuit 520, and a pull-down circuit 530. The control circuit 510 is connected with the touch control circuit 300 and the delay circuit 400, the switch sub-circuit 520 is connected in series between the battery 20 and the power supply end of the main controller 30, the control end of the switch sub-circuit 520 is connected with the control circuit 510, the pull-down circuit 530 is connected with the control end of the switch sub-circuit 520 and the ground, the control end of the pull-down circuit 530 is connected with the main controller 30, the control circuit 510 is used for being conducted to the ground under the control of the driving voltage signal and the second voltage signal, the switch sub-circuit 520 is used for being conducted when the control circuit 510 is conducted to the ground so as to conduct the battery 20 and the power supply end of the main controller 30, and the pull-down circuit 530 is used for being conducted under the control of the main controller 30 so as to maintain the switch sub-circuit 520 to be conducted.
It should be appreciated that when the control circuit 510 is turned on to ground, the control terminal of the switch sub-circuit 520 is a low signal. When the control circuit 510 controls the switch sub-circuit 520 to be turned on, the battery 20 is connected to the power terminal of the main controller 30, the main controller 30 is turned on, and the main controller 30 outputs a control signal to the pull-down circuit 530 immediately after the main controller is turned on to maintain the switch sub-circuit 520 on, i.e. maintain the power-on state thereof.
It should be understood that, by adopting the control circuit 510 and the switch sub-circuit 520, the switch sub-circuit 520 is turned on when the driving voltage signal and the second voltage signal are received simultaneously, that is, the main controller 30 is turned on when the first touch key 100 is touched and the second touch key 200 is touched, so that the problem of misoperation in the conventional technical scheme is avoided, and by adopting the pull-down circuit 530, the conduction maintenance of the switch sub-circuit 520 after the main controller 30 is turned on is realized.
Referring to fig. 3, in one embodiment, the switch circuit 500 further includes a detection circuit 540, the detection circuit 540 is connected to the control circuit 510 and a detection pin of the main controller 30, the detection circuit 540 is configured to output a trigger signal to the main controller 30 when the control circuit 510 is turned on to the ground, and the main controller 30 is further configured to control the pull-down circuit 530 to be turned off under the triggering of the trigger signal, so as to control the switch sub-circuit 520 to be turned off.
It should be appreciated that the detection circuit 540 may be a current detection or a voltage detection, etc. Whether the control circuit 510 receives the driving voltage signal and the second voltage signal is determined by detecting whether the control circuit 510 is connected to the ground, that is, whether corresponding touch signals are input to the first touch key 100 and the second touch key 200. When the main controller 30 is in the off state, the main controller 30 cannot receive the trigger signal output by the detection circuit 540, and when the main controller 30 is in the on state, the main controller 30 receives the trigger signal and is turned on by the pull-down circuit 530 to be turned off by the pull-down circuit 530, so that the switch sub-circuit 520 is turned off, and the off operation is realized.
The touch sliding switch circuit 10 in this embodiment adds the detection circuit 540, so that when the gesture is to touch the first touch key 100 and then touch the second touch key 200 in the on state, the switch operation of the main controller 30 is realized, that is, the touch sliding switch circuit 10 in this embodiment, and the switch control of the main controller 30 is realized by using a unified touch gesture.
Referring to fig. 4-a and 4-b, in one embodiment, the control circuit 510 includes a first resistor R1, a first switching tube Q1, and a second switching tube Q2, wherein a first end of the first resistor R1 is connected to the battery 20, the first switching tube Q1 and the second switching tube Q2 are connected in series between a second end of the first resistor R1 and ground, a second end of the first resistor R1 is connected to a control end of the switching sub-circuit 520, a control end of the first switching tube Q1 is connected to the delay circuit 400, and a control end of the second switching tube Q2 is connected to the touch circuit 300.
It should be appreciated that the first switching tube Q1 and the second switching tube Q2 are in a series relationship. For example, the connection of the first switching tube Q1 and the second switching tube Q2 may specifically be:
1. Referring to fig. 4-a, the second end of the first resistor R1 and the high-potential end of the first switching tube Q1 are commonly connected to the control end of the switching sub-circuit 520, the low-potential end of the first switching tube Q1 is connected to the high-potential end of the second switching tube Q2, and the low-potential end of the second switching tube Q2 is connected to the first output end of the touch control circuit 300.
2. Referring to fig. 4-b, the second end of the first resistor R1 and the high-potential end of the second switching tube Q2 are commonly connected to the control end of the switch sub-circuit 520, the low-potential end of the second switching tube Q2 is connected to the high-potential end of the first switching tube Q1, and the low-potential end of the first switching tube Q1 is connected to the first output end of the touch control circuit 300.
It should be understood that the first switching tube Q1 and the second switching tube Q2 in this embodiment are NMOS tubes, the gate of each NMOS tube is a control end, the drain of each NMOS tube is a high potential end, and the source of each NMOS tube is a low potential end.
It should be understood that when the first touch key 100 is not touched, that is, the first touch key 100 does not output the first touch signal, the first output terminal of the touch circuit 300 outputs the low level signal, and when the first output terminal of the touch circuit 300 outputs the low level signal, the low potential terminal of the second switch Q2 is equivalent to the ground.
It should be understood that, taking fig. 4-a as an example, the control circuit 510 in this embodiment outputs the low level signal only when the first switching tube Q1 and the second switching tube Q2 are turned on at the same time, so as to control the switch sub-circuit 520 to be turned on. In the control circuit 510 of this embodiment, the control terminal of the second switching tube Q2 is turned on only when the first output terminal of the touch circuit 300 outputs a low-level signal, that is, only when the first touch key 100 is pressed in advance and the second touch key 200 is pressed in a preset period of time, the first voltage signal (i.e., the driving voltage signal) delayed by the delay circuit 400, the second voltage signal output by the second output terminal of the touch circuit 300, and the low-level signal output by the first output terminal of the touch circuit 300 are turned on simultaneously to control the first switching tube Q1 and the second switching tube Q2. Namely, the occurrence of misoperation caused by simultaneously touching the first touch key 100 and the second touch key 200, misoperation caused by singly touching the first touch key 100 or the second touch key 200, and the like is avoided.
The control circuit 510 in this embodiment employs the first resistor R1, the first switching tube Q1, and the second switching tube Q2 to realize that the driving voltage signal and the second voltage signal are turned on when they are received at the same time, that is, to realize that only the first touch key 100 is pressed first and the second touch key 200 is pressed within a preset time period,
Referring to fig. 4-a, in one embodiment, the detection circuit 540 includes a first diode D1, a cathode of the first diode D1 is connected to the high-potential terminal of the first switching tube Q1, and an anode of the first diode D1 is connected to the main controller 30.
It should be understood that the detection circuit 540 in this embodiment is connected to a pull-up resistor inside the main controller 30, and when the control circuit 510 is turned on, the pull-up resistor is pulled down to ground, the current voltage detected by the detection circuit 540 is 0, and when the control circuit 510 is turned on, the pull-up resistor is normal, and the current voltage detected by the detection circuit 540 is the voltage of the pull-up resistor. The detection circuit 540 in this embodiment realizes unidirectional detection between the detection end of the main controller 30 and the control circuit 510 by using the first diode D1, and has a simple circuit.
Referring to fig. 4-a, in one embodiment, the switching sub-circuit 520 includes a second resistor R2 and a third switching tube Q3, a first terminal of the second resistor R2 and a high-potential terminal of the third switching tube Q3 are commonly connected to the battery 20, a second terminal of the second resistor R2 and a control terminal of the third switching tube Q3 are commonly connected to the control circuit 510 and the pull-down circuit 530, and a low-potential terminal of the third switching tube Q3 is connected to a power supply terminal of the main controller 30.
It should be understood that the third switching tube Q3 in this embodiment is a PMOS tube, the gate of the PMOS tube is a control end, the drain of the PMOS tube is a low potential end, and the source of the PMOS tube is a high potential end, and in other embodiments, other types of switching tubes may be used.
Referring to fig. 4-a, in one embodiment, the pull-down circuit 530 includes a fourth switching tube Q4, the high-potential terminal of the fourth switching tube Q4 is connected to the control terminal of the switching sub-circuit 520, the low-potential terminal of the fourth switching tube Q4 is grounded, and the control terminal of the fourth switching tube Q4 is connected to the main controller 30.
It should be understood that the fourth switching tube Q4 in this embodiment is an NMOS tube, the gate of the NMOS tube is a control end, the drain of the NMOS tube is a high potential end, and the source of the NMOS tube is a low potential end, and in other embodiments, other types of switching tubes may be used.
Referring to fig. 4-a, in one embodiment, the delay circuit 400 includes a second diode D2, a first capacitor C1, and a third resistor R3, wherein a positive electrode of the second diode D2 is connected to the touch circuit 300, a negative electrode of the second diode D2, a first end of the first capacitor C1, and a first end of the third resistor R3 are commonly connected to the control circuit 510, and a second end of the first capacitor C1 and a second end of the third resistor R3 are grounded.
It should be appreciated that the delay circuit 400 in this embodiment implements the storage and delay of the output of the first voltage signal by using the second diode D2, the first capacitor C1, and the third resistor R3, so that the first switching tube Q1 is kept on for a preset period of time. The preset duration is associated with the capacitance of the capacitor.
For easy understanding, please refer to fig. 4-a, which illustrates one of the following operation procedures of the touch sliding circuit in this embodiment:
1. The first touch key 100 and the second touch key 200 output a low level when no finger is detected (i.e. when no touch operation is performed), the touch circuit 300 outputs a low level, the first switching tube Q1, the second switching tube Q2, the third switching tube Q3 and the fourth switching tube Q4 are all in an off state, and the main controller 30 is in an off state;
2. When the main controller 30 is in a power-off state, a finger slides from the first touch key 100 to the second touch key 200, the touch circuit 300 detects that the first touch key 100 has an input, at this time, the first output end of the touch circuit 300 outputs a first voltage signal in a high level state, the first capacitor C1 is charged through the second diode D2, the first switch Q1 is turned on, when the finger slides from the first touch key 100 to the second touch key 200, the second touch key 200 outputs a high level, the first touch key 100 outputs a low level, the first output end of the touch circuit 300 outputs a second voltage signal in a high level state, the second switch Q2 is turned on, at this time, the second diode D2 is turned on, the first switch Q1 is still turned on because the first capacitor C1 is charged, at this time, the control end (gate) of the third switch Q3 is turned on because the first switch Q1 and the second switch Q2 are turned on, the third switch Q3 is turned off, the fourth switch Q3 is turned on, the main controller 30 is turned on, and the fourth switch 30 is turned on, and the main controller 30 outputs a power supply signal to the fourth switch 30. After the fourth switching tube Q4 is conducted, the third switching tube Q3 can keep a conducting state, so that a starting-up function is realized;
3. In the on state, a finger is used to slide from the first touch key 100 to the second touch key 200, the touch circuit 300 detects a first touch signal output by the first touch key 100, at this time, a first output end of the touch circuit outputs a high level, the first capacitor C1 is charged through the second diode D2, the first switch tube Q1 is turned on, when the finger slides from the first touch key 100 to the second touch key 200, a second output end of the touch circuit 300 outputs a high level, a first output end of the touch circuit 300 outputs a low level, at this time, the second switch tube Q2 is turned on, because the first capacitor C1 is charged, the first switch tube Q1 is still turned on, at this time, a high potential end electrode of the first switch tube Q1 is turned into a low level because the first switch tube Q1 and the second switch tube Q2 are turned on, the main controller 30 detects a trigger signal which is a low level through the detection circuit 540, the main controller 30 controls the pull-down circuit 530 to be turned off, and the first capacitor C1 is turned off through the third resistor R3 to the first switch tube Q1, and the third switch tube Q3 is turned off, thereby realizing the function of turning off the third switch tube Q3;
4. if a finger touches only one of the pads of the first touch key 100 or the second touch key 200, only one of the first output end of the touch circuit 300 or the second output end of the touch circuit 300 outputs a high level, and only one of the first switching tube Q1 and the second switching tube Q2 is turned on, so that the third switching tube Q3 cannot be turned on, and the system cannot be powered on;
5. If the finger slides from the second touch key 200 to the first touch key 100, after the finger slides from the second touch key 200 to the first touch key 100, the second output end of the touch circuit 300 will output a low level because of the separation of the finger, and the second switching tube Q2 is turned off, so that the third switching tube Q3 cannot be turned on, and the system cannot be powered on;
6. If the finger touches the first touch key 100 and the second touch key 200 at the same time, the first output end of the touch circuit 300 and the second output end of the touch circuit 300 output a high level at the same time, and since the low potential end of the second diode D2 is connected with the first output end of the touch circuit 300, that is, the low potential end of the second diode D2 is at the high level, the second switching tube Q2 cannot be turned on, so that the third switching tube Q3 cannot be turned on, and the system cannot be powered on.
A second aspect of the embodiment of the present application provides a display card, which includes a battery 20, a main controller 30, and a touch sliding on/off circuit 10 according to the first aspect of the embodiment of the present application, where the touch sliding on/off circuit 10 is connected to the main controller 30 and the battery 20.
It should be understood that the display card in this embodiment replaces the conventional switch circuit by adopting the touch sliding switch circuit 10, so as to solve the problems of difficult mechanical key pressing, easy false touch and invalid operation in the conventional display card, and avoid the situation that the mechanical key occupies the setting area and structure of the outer surface of the display card.
Optionally, in one embodiment, the display card further includes a display screen, and the first touch key 100 and the second touch key 200 are disposed on an inner surface of the display screen.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
The foregoing embodiments are merely illustrative of the technical solutions of the present application, and not restrictive, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that modifications may still be made to the technical solutions described in the foregoing embodiments or equivalent substitutions of some technical features thereof, and that such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101994.8A CN112713888B (en) | 2020-10-15 | 2020-10-15 | Touch-slide switch circuit and display card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101994.8A CN112713888B (en) | 2020-10-15 | 2020-10-15 | Touch-slide switch circuit and display card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112713888A CN112713888A (en) | 2021-04-27 |
| CN112713888B true CN112713888B (en) | 2025-05-16 |
Family
ID=75541762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011101994.8A Active CN112713888B (en) | 2020-10-15 | 2020-10-15 | Touch-slide switch circuit and display card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112713888B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114115082A (en) * | 2021-12-31 | 2022-03-01 | 深圳市海洋王绿色照明技术有限公司 | Standby control circuit and portable movable lamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213693665U (en) * | 2020-10-15 | 2021-07-13 | 深圳市文鼎创数据科技有限公司 | Touch sliding switch circuit and display card |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI395125B (en) * | 2009-07-14 | 2013-05-01 | Sonix Technology Co Ltd | Capacitive touch sensing circuit |
| CN202150983U (en) * | 2011-06-22 | 2012-02-22 | 万红军 | Touch-relay stair hall lamp |
| CN204790962U (en) * | 2015-07-10 | 2015-11-18 | 深圳市沃特沃德科技有限公司 | Mobile intelligent Terminal's bright screen control circuit that goes out |
| CN205071379U (en) * | 2015-09-22 | 2016-03-02 | 成都汇丁科技有限公司 | Simply touch delay switch circuit |
| CN211236018U (en) * | 2019-09-25 | 2020-08-11 | 四川交通职业技术学院 | Touch-control type automatic resistance testing device |
| CN111262571A (en) * | 2020-04-10 | 2020-06-09 | 广州通达汽车电气股份有限公司 | Prompting circuit and touch button |
-
2020
- 2020-10-15 CN CN202011101994.8A patent/CN112713888B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213693665U (en) * | 2020-10-15 | 2021-07-13 | 深圳市文鼎创数据科技有限公司 | Touch sliding switch circuit and display card |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112713888A (en) | 2021-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103543891B (en) | Touch module with dynamic capacitance matching mechanism | |
| JP5257954B2 (en) | Touch panel detection circuit and operation method thereof | |
| US20120331312A1 (en) | Usb charging circuit for a computer | |
| CN112527133B (en) | Stylus | |
| EP2383890B1 (en) | Handheld apparatus | |
| CN112713888B (en) | Touch-slide switch circuit and display card | |
| CN105138182B (en) | Touch-control display module, touch-control input unit and touch control input method | |
| CN114035702A (en) | Touch wake-up method and device for display device, power supply circuit and display device | |
| WO2014187178A1 (en) | Logo assembly, control method, controller and electronic device | |
| CN213693665U (en) | Touch sliding switch circuit and display card | |
| US20210333922A1 (en) | Touch display panel and drive method thereof, and touch display device | |
| CN101488047B (en) | Keyboard with power on/off function | |
| TWI521336B (en) | Display device | |
| CN210742886U (en) | Startup and shutdown circuit | |
| JP2008017432A (en) | Touch sensor | |
| CN210203380U (en) | Electronic cigarette preventing false touch | |
| TW201324132A (en) | Circuit for clearing password of CMOS | |
| CN109271054B (en) | Touch Display Driver Circuit | |
| US7982621B2 (en) | Power control apparatus | |
| CN117134762A (en) | Equipment power supply system controlled by capacitive touch keys | |
| CN221352869U (en) | Power-on circuit and its battery management system | |
| JP2016218696A (en) | Touch panel device | |
| CN112486060B (en) | Reset circuit, circuit board and electronic product of singlechip | |
| CN218526221U (en) | Power supply control circuit and terminal equipment | |
| CN217741698U (en) | Long-press switch circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |