CN213693665U - Touch sliding switch circuit and display card - Google Patents
Touch sliding switch circuit and display card Download PDFInfo
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- CN213693665U CN213693665U CN202022299980.3U CN202022299980U CN213693665U CN 213693665 U CN213693665 U CN 213693665U CN 202022299980 U CN202022299980 U CN 202022299980U CN 213693665 U CN213693665 U CN 213693665U
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Abstract
A first touch key, a second touch key and a touch circuit are adopted in the touch sliding switch circuit, replacement of mechanical keys is achieved, the problem that the service life of the mechanical keys is short in the traditional switch circuit is solved, and by adopting 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 (namely when the first touch key slides to the second touch key within the preset time), the switch circuit can be switched on or switched off to control a main controller to be switched on or switched off, so that the situation that misoperation is caused by the fact that the first touch key or the second touch key is touched by mistake is avoided. The touch control sliding on-off circuit in the embodiment solves the problems that a mechanical key is easy to mistakenly touch and the service life is short in the traditional display card on-off circuit.
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 conventional smart display Card, such as an Integrated Circuit Card (IC Card) with a display function, generally uses a mechanical key to implement power on and power off, but the mechanical key on the display Card has poor hand feeling due to the thinness of the Card, and the situation that the key cannot be pressed or the key is pressed for multiple times easily occurs in the implementation operation; and the mechanical key has short service life, and the sensitivity is reduced after the mechanical key is used for a long time, so that the invalid times of the key are increased.
Therefore, the conventional display card on-off circuit has the problems that the mechanical key is easy to be touched by mistake and the service life is short.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a touch-control slide switch circuit and display card, aim at solving and have the mechanical button to appear the mistake easily among the traditional display card switch circuit and touch and the short problem of life-span.
A first aspect of the embodiments of the present application provides a touch-control slide switch circuit, which is connected between a battery and a main controller, and 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;
the time delay circuit is connected with the first output end of the touch circuit and used for receiving the first voltage signal and continuously outputting a driving voltage signal within a preset time length; and
the switch circuit is connected with the touch circuit, the delay circuit, the battery and the main controller, and is used for controlling the on-off of the drive 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 switching circuit includes:
the control circuit is connected with the touch circuit and the delay circuit and is used for conducting to the ground under the control of the driving voltage signal and the second voltage signal;
the switch sub-circuit is connected between the battery and the power supply end of the main controller in series, the control end of the switch sub-circuit is connected with the control circuit, and the switch sub-circuit is used for conducting when the control circuit is conducted to the ground so as to conduct the battery and the power supply end of the main controller; 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 to maintain the conduction of the switch sub-circuit.
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, and the detection circuit is used for outputting a trigger signal to the main controller when the control circuit is conducted to the ground; the main controller is further used for controlling the pull-down circuit to be turned off under the triggering of the triggering signal so as to control the switch sub-circuit to be turned off.
In one embodiment, the control circuit includes: the touch control circuit comprises a first resistor, a first switch tube and a second switch tube, wherein a first end of the first resistor is connected with the battery, the first switch tube and the second switch tube are connected between a second end of the first resistor and the ground in series, a second end of the first resistor is connected with a control end of the switch sub-circuit, a control end of the first switch tube is connected with the delay circuit, and a control end of the second switch tube is connected with the touch control circuit.
In one embodiment, the detection circuit comprises a first diode, 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: the first end of the second resistor and the high potential end of the third switching tube are connected to the battery in a sharing mode, the second end of the second resistor and the control end of the third switching tube are connected to the control circuit and the pull-down circuit in a sharing mode, and the low potential end of the third switching tube is connected with the power supply end of the main controller.
In one embodiment, the pull-down circuit includes: and 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, an anode of the second diode is connected to 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 connected to 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
the touch-control sliding power on/off circuit according to the first aspect of the embodiment of the present application, wherein the touch-control sliding power on/off circuit is connected to 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, the replacement of the mechanical key is realized, the problem that the service life of the mechanical key is short in the 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 can be switched on or off to control the main controller to be switched on or switched off, and the condition that misoperation is caused by the fact that the first touch key or the second touch key is touched by mistake is avoided. The touch control sliding on-off circuit in the embodiment solves the problems that a mechanical key is easy to mistakenly touch and the service life is short in the traditional display card on-off circuit.
Drawings
Fig. 1 is a schematic circuit diagram of a touch slide switch circuit according to an embodiment of the present disclosure;
FIG. 2 is a circuit diagram of a switch circuit of the touch slide switch circuit shown in FIG. 1;
FIG. 3 is another circuit diagram of the touch slide switch circuit shown in FIG. 1;
FIG. 4-a is an exemplary circuit schematic of the touch slide switch circuit shown in FIG. 3;
fig. 4-b is a schematic circuit diagram of another exemplary circuit of the touch slide switch circuit shown in fig. 3.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present 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 merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" 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 will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 shows a circuit schematic diagram of a touch slide switch power-on/off circuit 10 provided in a first aspect of an embodiment of the present application, and for convenience of description, only parts related to the embodiment are shown, and detailed descriptions are as follows:
touch-control slide switch machine circuit 10 in this implementation is connected between battery 20 and main controller 30, and touch-control slide switch machine circuit 10 includes: the touch control device comprises a first touch control key 100, a second touch control key 200, a touch control circuit 300, a delay circuit 400 and a switch circuit 500, wherein the first touch control key 100 is connected with a first input end of the touch control circuit 300, the second touch control key 200 is connected with a second input end of the touch control circuit 300, a first output end of the touch control 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 control 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 a battery 20, and an output end of the switch circuit 500 is connected with a 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 configured to output a first voltage signal at a first output terminal according to a first touch signal, and output a second voltage signal at a second output terminal according to a second touch signal; the delay circuit 400 is configured to receive the first voltage signal and continuously output a driving voltage signal within a preset duration; the switch circuit 500 is used for being turned on or off under the simultaneous control of the driving voltage signal and the second voltage signal to control the power-on or power-off of the main controller 30.
It should be understood that the main controller 30 is a control system of an electronic device, such as a microprocessor, for example, a single chip microcomputer.
It should be understood that the first touch button 100 and the second touch button 200 in this embodiment are capacitive sensing touch buttons. 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, output 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, where 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; 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 button 100 and the second touch button 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 capacitive touch chip may be BS83B 02L. 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 terminal of the first capacitive C1 touch chip is connected to the first touch key 100, an output terminal of the first capacitive C1 touch chip is configured to output a first voltage signal, an input terminal of the second capacitive touch chip is connected to the second touch key 200, and an output terminal of the second capacitive touch chip is configured to output 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 terminal of the first capacitor C1 touch chip is the first output terminal of the touch circuit 300, and the output terminal of the second capacitor touch chip is the second output terminal of the touch circuit 300.
Optionally, the delay circuit 400 may be formed by an energy storage capacitor, when the touch circuit 300 outputs the first voltage signal, the delay circuit 400 charges 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 driving voltage signal (the delayed first voltage signal) to the switch circuit 500, thereby implementing the delayed output of the first voltage signal. In other embodiments, the delay circuit 400 may also be formed by a delay.
Alternatively, the switching circuit 500 may be formed by a controllable electronic switch such as a switching tube.
In the touch sliding power on/off circuit 10 of the embodiment, the first touch button 100, the second touch button 200 and the touch circuit 300 are adopted to replace a mechanical button, so that the problems of difficulty in pressing the mechanical button, short service life and easy occurrence of invalid operation due to short service life of the mechanical button in the conventional power on/off circuit are solved, and by adopting the delay circuit 400 and the switch circuit 500, when the second touch button 200 is touched within a preset time period after the first touch button 100 is touched (i.e., when the first touch button 100 slides to the second touch button 200 within the preset time period), the switch circuit 500 is turned on or off to control the main controller 30 to power on or off, so as to avoid the occurrence of misoperation caused by mistakenly touching the first touch button 100 or the second touch button 200. That is, the touch-control sliding switch power-on and power-off circuit 10 in the embodiment solves the problems that the mechanical key is easy to be touched by mistake and the service life is short in the conventional switch power-on and power-off circuit.
In one embodiment, the touch slide switch power-on/off circuit 10 specifically includes:
when the main controller is in a power-off state, after the switching circuit is controlled to be conducted under the simultaneous control of the driving voltage signal and the second voltage signal, 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 switch 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 switch circuit to be switched off under the control of the trigger signal.
It should be understood that the first control signal and the second control signal may be two level signals with opposite level states, for example, the first control signal may be a level signal in a high level state, and the second control signal may be a level signal in 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 power-off state, the switching circuit is controlled to be turned on according to the driving voltage signal and the second voltage signal, so that the main controller is powered on, and the main controller is controlled to output the first control signal to the switching circuit to maintain the switching circuit to be turned on after the power end of the main controller receives the voltage signal, so that the power-on state can be maintained after the first touch key and the second touch key do not output the first touch signal and the second touch signal. When the main controller is in a power-on state, the switching circuit outputs a trigger signal to the main controller according to the simultaneous control of the driving voltage signal and the second voltage signal, and when the main controller receives the trigger signal in the power-on state, the second control signal is output to the switching circuit, so that the switching circuit is controlled to be disconnected, and the power-off operation is further realized. That is, the touch slide switch circuit in this embodiment implements the mutual conversion between the power-on state and the power-off state of the main controller according to the driving voltage signal and the second voltage signal (corresponding to the sliding gesture according to the first touch key and the second touch key).
Referring to fig. 2, in one embodiment, the switch circuit 500 includes: a control circuit 510, a switch 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 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 and the main controller 30 are connected with the control circuit 510 for conducting to the ground under the simultaneous control of the driving voltage signal and the second voltage signal; the switch sub-circuit 520 is used for conducting when the control circuit 510 is conducted to the ground so as to conduct the power supply terminals of the battery 20 and the main controller 30; the pull-down circuit 530 is used to conduct under the control of the main controller 30 to maintain the switch sub-circuit 520 conducting.
It should be understood 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 to maintain the switch sub-circuit 520 to be turned on, i.e., maintain its on-state.
It should be understood that, in the switch circuit 500 in this embodiment, by using the control circuit 510 and the switch sub-circuit 520, the switch sub-circuit 520 is turned on only when the driving voltage signal and the second voltage signal are received simultaneously, that is, the main controller 30 is turned on only when the first touch key 100 is touched first and then the second touch key 200 is touched, so that the problem of misoperation in the conventional technical scheme is avoided; and the pull-down circuit 530 is adopted to maintain the conduction of the switch sub-circuit 520 after the main controller 30 is turned on.
Referring to fig. 3, in an 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, and 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 ground; the main controller 30 is further configured to control the pull-down circuit 530 to turn off under the trigger of the trigger signal, so as to control the switch sub-circuit 520 to turn off.
It is understood that the detection circuit 540 may be current detection or 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 turned on to ground, that is, whether corresponding touch signals are input to the first touch key 100 and the second touch key 200 is determined. When the main controller 30 is in the shutdown state, the main controller 30 cannot receive the trigger signal output by the detection circuit 540; when the main controller 30 is in the power-on state, after the main controller 30 receives the trigger signal, the original control pull-down circuit 530 is switched on to the control pull-down circuit 530, so as to turn off the switch sub-circuit 520, i.e. to implement the power-off operation.
In the touch slide switch on/off circuit 10 in this embodiment, the detection circuit 540 is added, so that in the power-on state, when the gesture is to first touch the first touch key 100 and then touch the second touch key 200, the power-off operation of the main controller 30 is realized, that is, the touch slide switch on/off circuit 10 in this embodiment realizes the power-on and power-off control of the main controller 30 by using a unified touch gesture.
Referring to fig. 4-a and 4-b, in one embodiment, the control circuit 510 includes: the touch control circuit comprises a first resistor R1, a first switch tube Q1 and a second switch tube Q2, wherein a first end of the first resistor R1 is connected with the battery 20, the first switch tube Q1 and the second switch tube Q2 are connected between a second end of the first resistor R1 and the ground in series, a second end of the first resistor R1 is connected with a control end of the switch sub-circuit 520, a control end of the first switch tube Q1 is connected with the delay circuit 400, and a control end of the second switch tube Q2 is connected with the touch control circuit 300.
It should be understood that the first switch Q1 and the second switch Q2 are in series. For example, the connection between the first switch Q1 and the second switch Q2 may be:
1. referring to fig. 4-a, the second terminal of the first resistor R1 and the high-potential terminal of the first switch transistor Q1 are commonly connected to the control terminal of the switch sub-circuit 520, the low-potential terminal of the first switch transistor Q1 is connected to the high-potential terminal of the second switch transistor Q2, and the low-potential terminal of the second switch transistor Q2 is connected to the first output terminal of the touch circuit 300.
2. Referring to fig. 4-b, the second terminal of the first resistor R1 and the high-potential terminal of the second switch transistor Q2 are commonly connected to the control terminal of the switch sub-circuit 520, the low-potential terminal of the second switch transistor Q2 is connected to the high-potential terminal of the first switch transistor Q1, and the low-potential terminal of the first switch transistor Q1 is connected to the first output terminal of the touch circuit 300.
It should be understood that the first switch transistor Q1 and the second switch transistor Q2 in this embodiment are NMOS transistors, the gates of the NMOS transistors are control terminals, the drains of the NMOS transistors are high potential terminals, and the sources of the NMOS transistors are low potential terminals, and in other embodiments, other types of switch transistors may be used.
It should be understood that when the first touch button 100 is not touched, i.e. the first touch button 100 does not output the first touch signal, the first output terminal of the touch circuit 300 outputs a low level signal, and when the first output terminal of the touch circuit 300 outputs a low level signal, the low potential terminal of the second switch Q2 is equivalent to ground.
It should be understood that, taking fig. 4-a as an example, the control circuit 510 in this embodiment outputs a low signal only when the first switch Q1 and the second switch Q2 are turned on simultaneously, so as to control the switch sub-circuit 520 to be turned on. In the control circuit 510 of the present embodiment, only when the first output terminal of the touch circuit 300 outputs the low level signal, the control terminal of the second switch Q2 receives the second voltage signal to be turned on, that is, only when the first touch key 100 is pressed first and the second touch key 200 is pressed within the preset time period, 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 control the first switch Q1 and the second switch Q2 to be turned on at the same time. That is, the occurrence of the misoperation caused by simultaneously touching the first touch key 100 and the second touch key 200, the 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 is turned on when receiving the driving voltage signal and the second voltage signal at the same time by using the first resistor R1, the first switch Q1, and the second switch Q2, that is, only when the first touch button 100 is pressed first and the second touch button 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 switch 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, when the control circuit 510 is turned on, the pull-up resistor is pulled down to ground, and the current voltage detected by the detection circuit 540 is 0; 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 adopts the first diode D1 to realize unidirectional detection between the detection terminal of the main controller 30 and the control circuit 510, and the circuit is simple.
Referring to fig. 4-a, in one embodiment, the switch sub-circuit 520 includes: a second resistor R2 and a third switch tube Q3, a first end of the second resistor R2 and a high-potential end of the third switch tube Q3 are connected to the battery 20 in common, a second end of the second resistor R2 and a control end of the third switch tube Q3 are connected to the control circuit 510 and the pull-down circuit 530 in common, and a low-potential end of the third switch tube Q3 is connected to a power supply end of the main controller 30.
It should be understood that the third switch transistor Q3 in this embodiment is a PMOS transistor, the gate of the PMOS transistor is a control terminal, the drain of the PMOS transistor is a low potential terminal, and the source of the PMOS transistor is a high potential terminal, and in other embodiments, other types of switch transistors may be used.
Referring to fig. 4-a, in one embodiment, the pull-down circuit 530 includes: a fourth switching tube Q4, a high potential end of the fourth switching tube Q4 is connected with the control end of the switch sub circuit 520, a low potential end of the fourth switching tube Q4 is grounded, and the control end of the fourth switching tube Q4 is connected with the main controller 30.
It should be understood that the fourth switching transistor Q4 in this embodiment is an NMOS transistor, the gate of the NMOS transistor is a control terminal, the drain of the NMOS transistor is a high potential terminal, and the source of the NMOS transistor is a low potential terminal, and in other embodiments, other types of switching transistors may be used.
Referring to fig. 4-a, in an embodiment, the delay circuit 400 includes a second diode D2, a first capacitor C1 and a third resistor R3, wherein an anode of the second diode D2 is connected to the touch circuit 300, a cathode 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 understood that the delay circuit 400 in this embodiment implements storage and delayed 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 switch tube Q1 is kept on for a preset time period. The preset time is associated with the capacitance value of the capacitor.
For easy understanding, please refer to fig. 4-a, which briefly describes one of the working processes of the touch slide circuit in the present embodiment as follows:
1. when the first touch key 100 and the second touch key 200 do not detect a finger (i.e., when there is no touch operation), the touch circuit 300 outputs a low level, the first switch Q1, the second switch Q2, the third switch Q3, and the fourth switch 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 button 100 to the second touch button 200, the touch circuit 300 first detects that the first touch button 100 has an input, and at this time, the first output terminal 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, and the first switch tube Q1 is turned on; when the first touch key 100 slides 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 terminal of the touch circuit 300 outputs a second voltage signal in a high level state, the second switch tube Q2 is turned on, at this time, the second diode D2 is turned on, because the first capacitor C1 is charged, the first switch tube Q1 is still turned on, at this time, the control terminal (gate) of the third switch tube Q3 is turned into a low level because the first switch tube Q1 and the second switch tube Q2 are turned on, the third switch tube Q3 is turned on, the battery 20 supplies power to the main controller 30, the main controller 30 is turned on, the main controller 30 outputs a high level signal to the control terminal of the fourth switch tube Q4, and the fourth switch tube Q4 is turned on. After the fourth switching tube Q4 is turned on, the third switching tube Q3 keeps the on state, so that the starting function is realized;
3. in the power-on state, when a finger slides from the first touch button 100 to the second touch button 200, the touch circuit 300 detects the first touch signal output by the first touch button 100, at this time, the first output terminal of the touch circuit outputs a high level, the first capacitor C1 is charged through the second diode D2, the first switch Q1 is turned on, when the first touch button 100 slides to the second touch button 200, the second output terminal of the touch circuit 300 outputs a high level, the first output terminal of the touch circuit 300 outputs a low level, at this time, the second switch Q2 is turned on, since the first capacitor C1 is charged, the first switch Q1 is still turned on, at this time, the high potential terminal of the first switch Q1 is turned into a low level because the first switch Q1 and the second switch Q2 are turned on to the ground, the detector 30 detects a trigger signal of the low level through the detection circuit 540, the main controller 30 controls the pull-down circuit 530 to be turned off until the first capacitor C1 discharges to the first switching tube Q1 through the third resistor R3 and is turned off, and at this time, the control end of the third switching tube Q3 is at a high level, and the third switching tube Q3 is turned off to realize the shutdown function;
4. if a finger touches only one pad of the first touch key 100 or the second touch key 200, only one of the first output terminal of the touch circuit 300 or the second output terminal of the touch circuit 300 outputs a high level, only one of the first switch tube Q1 and the second switch tube Q2 is turned on, so that the third switch tube Q3 cannot be turned on, and the system cannot be powered on;
5. if a 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 terminal of the touch circuit 300 outputs a low level because the finger leaves, and the second switch Q2 is turned off, so that the third switch Q3 cannot be turned on, and the system cannot be powered on;
6. if a finger touches the first touch button 100 and the second touch button 200 at the same time, the first output terminal of the touch circuit 300 and the second output terminal of the touch circuit 300 output high levels at the same time, and since the low potential terminal of the second diode D2 is connected to the first output terminal of the touch circuit 300, i.e., the low potential terminal of the second diode D2 is at a high level at this time, the second switch Q2 cannot be turned on, so that the third switch Q3 cannot be turned on, and the system cannot be powered on.
A second aspect of an embodiment of the present application provides a display card, including: the touch control system comprises a battery 20, a main controller 30 and a touch control slide switch machine circuit 10 as the first aspect of the embodiment of the application, wherein the touch control slide switch machine circuit 10 is connected with the main controller 30 and the battery 20.
It should be understood that, in the display card of the embodiment, the touch sliding on/off circuit 10 is used to replace a conventional on/off circuit, so that the problems of difficulty in pressing mechanical keys, easy occurrence of mistaken touch and invalid operation in the conventional display card are solved, and meanwhile, the situation that the mechanical keys occupy the arrangement area and the structure on the outer surface of the display card is avoided.
Optionally, in an 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-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A touch slide switch on/off circuit is connected between a battery and a main controller, and comprises:
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;
the time delay circuit is connected with the first output end of the touch circuit and used for receiving the first voltage signal and continuously outputting a driving voltage signal within a preset time length; and
the switch circuit is connected with the touch circuit, the delay circuit, the battery and the main controller, and is used for controlling the on-off of the drive voltage signal and the second voltage signal at the same time so as to control the on-off of the main controller.
2. The touch slide switch circuit of claim 1, wherein the switch circuit comprises:
the control circuit is connected with the touch circuit and the delay circuit and is used for conducting to the ground under the control of the driving voltage signal and the second voltage signal;
the switch sub-circuit is connected between the battery and the power supply end of the main controller in series, the control end of the switch sub-circuit is connected with the control circuit, and the switch sub-circuit is conducted when the control circuit is conducted to the ground so as to conduct the battery and the power supply end of the main controller; 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 to maintain the conduction of the switch sub-circuit.
3. The touch slide switch circuit of claim 2, further comprising a detection circuit connected to the control circuit and a detection pin of the host controller, the detection circuit configured to output a trigger signal to the host controller when the control circuit is turned on to ground; the main controller is further used for controlling the pull-down circuit to be turned off under the triggering of the triggering signal so as to control the switch sub-circuit to be turned off.
4. The touch slide switch circuit of claim 3, wherein the control circuit comprises: the touch control circuit comprises a first resistor, a first switch tube and a second switch tube, wherein a first end of the first resistor is connected with the battery, the first switch tube and the second switch tube are connected between a second end of the first resistor and the ground in series, a second end of the first resistor is connected with a control end of the switch sub-circuit, a control end of the first switch tube is connected with the delay circuit, and a control end of the second switch tube is connected with the touch control circuit.
5. The touch slide switch circuit as defined in claim 4, wherein the detection circuit comprises a first diode, a cathode of the first diode is connected to the high potential terminal of the first switch tube, and an anode of the first diode is connected to the main controller.
6. The touch slide switch circuit of claim 3, wherein the switch subcircuit comprises: the first end of the second resistor and the high potential end of the third switching tube are connected to the battery in a sharing mode, the second end of the second resistor and the control end of the third switching tube are connected to the control circuit and the pull-down circuit in a sharing mode, and the low potential end of the third switching tube is connected with the power supply end of the main controller.
7. The touch slide switch circuit of claim 3, wherein the pull-down circuit comprises: and 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.
8. The touch slide switch circuit according to any one of claims 3 to 7, wherein the delay circuit includes a second diode, a first capacitor, and a third resistor, an anode of the second diode is connected to 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 connected to the control circuit, and a second end of the first capacitor and a second end of the third resistor are grounded.
9. A display card, comprising:
a battery;
a main controller; and
the touch slide switch circuit of any of claims 1-8, connected to the master controller and the battery.
10. The display card of claim 9, further comprising: the display screen, first touch key and the second touch key set up in the display screen internal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022299980.3U CN213693665U (en) | 2020-10-15 | 2020-10-15 | Touch sliding switch circuit and display card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022299980.3U CN213693665U (en) | 2020-10-15 | 2020-10-15 | Touch sliding switch circuit and display card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213693665U true CN213693665U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022299980.3U Active CN213693665U (en) | 2020-10-15 | 2020-10-15 | Touch sliding switch circuit and display card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213693665U (en) |
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2020
- 2020-10-15 CN CN202022299980.3U patent/CN213693665U/en active Active
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