Touch-slide switch circuit and display card

Abstract

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

[0001] The present application belongs to the technical field of power on / off control, and in particular, relates to a touch-controlled sliding power on / off circuit and a display card. Background Art

[0002] At present, traditional smart display cards, such as integrated circuit cards (IC cards) with display functions, generally use mechanical buttons to turn on and off the computer. However, due to the thinness of the card, the mechanical buttons on the display card have a poor feel, and it is easy to fail to press the button or press the button multiple times during operation. In addition, the life of the mechanical button is short. After long-term use, the sensitivity will decrease, resulting in an increase in the number of invalid buttons.

[0003] Therefore, the mechanical buttons in the conventional display card power on / off circuit are prone to accidental touches and have a short lifespan. Summary of the invention

[0004] The purpose of the present application is to provide a touch-sliding power-on / off circuit and a display card, aiming to solve the problem that mechanical buttons in traditional display card power-on / off circuits are prone to accidental touches and have a short lifespan.

[0005] A first aspect of an embodiment of the present application provides a touch-sliding switch circuit, connected between a battery and a main controller, and the touch-sliding switch circuit includes:

[0006] A first touch button, used for inputting a first touch signal;

[0007] A second touch button, used for inputting a second touch signal;

[0008] a touch control circuit connected to the first touch control button and the second touch control button, the touch control circuit being configured to output a first voltage signal at a first output terminal according to the first touch control signal, and to output a second voltage signal at a second output terminal according to the second touch control signal;

[0009] a delay circuit connected to the first output terminal of the touch control circuit, configured to receive the first voltage signal and continuously output a driving voltage signal within a preset time period; and

[0010] A switch circuit is connected to the touch circuit, the delay circuit, the battery and the main controller, and the switch circuit is used to turn on or off under the simultaneous control of the driving voltage signal and the second voltage signal to control the power on or off of the main controller.

[0011] In one embodiment, the touch-sliding switch circuit specifically includes: when the main controller is in a shutdown 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 turned on;

[0012] When the main controller is in the power-on state, the switch circuit outputs a trigger signal to the main controller under the simultaneous control of the drive voltage signal and the second voltage signal, and the main controller outputs a second control signal to control the switch circuit to disconnect under the control of the trigger signal.

[0013] In one embodiment, the switch circuit comprises:

[0014] A control circuit, the control circuit being connected to the touch control circuit and the delay circuit, the control circuit being configured to be turned on to ground under the simultaneous control of the driving voltage signal and the second voltage signal;

[0015] a switch subcircuit, the switch subcircuit being connected in series between the battery and the power supply terminal of the main controller, the control terminal of the switch subcircuit being connected to the control circuit, the switch subcircuit being used to be turned on when the control circuit is turned on to ground, so as to turn on the battery and the power supply terminal of the main controller; and

[0016] A pull-down circuit is connected to the control end of the switch sub-circuit and the ground, the control end of the pull-down circuit is connected to the main controller, and the pull-down circuit is used to be turned on under the control of the main controller to maintain the switch sub-circuit turned on.

[0017] In one embodiment, the switching circuit also includes a detection circuit, which is connected to the detection pins of the control circuit and the main controller, and the detection circuit is used to output a trigger signal to the main controller when the control circuit is turned on to ground; the main controller is also used to control the pull-down circuit to turn off when triggered by the trigger signal, so as to control the switching sub-circuit to disconnect.

[0018] In one embodiment, the control circuit includes: a first resistor, a first switch tube and a second switch tube, the first end of the first resistor is connected to the battery, the first switch tube and the second switch tube are connected in series between the second end of the first resistor and the ground, the second end of the first resistor is connected to the control end of the switch sub-circuit, the control end of the first switch tube is connected to the delay circuit, and the control end of the second switch tube is connected to the touch circuit.

[0019] In one embodiment, the detection circuit includes a first diode, a cathode of the first diode is connected to a high potential end of the first switch tube, and an anode of the first diode is connected to the main controller.

[0020] In one embodiment, the switch subcircuit includes: a second resistor and a third switch tube, the first end of the second resistor and the high potential end of the third switch tube are connected to the battery, the second end of the second resistor and the control end of the third switch tube are connected to the control circuit and the pull-down circuit, and the low potential end of the third switch tube is connected to the power supply end of the main controller.

[0021] In one embodiment, the pull-down circuit includes: a fourth switch tube, a high potential end of the fourth switch tube is connected to the control end of the switch sub-circuit, a low potential end of the fourth switch tube is grounded, and the control end of the fourth switch tube is connected to the main controller.

[0022] In one embodiment, the delay circuit includes a second diode, a first capacitor and a third resistor, the positive electrode of the second diode is connected to the touch control circuit, the negative electrode of the second diode, the first end of the first capacitor and the first end of the third resistor are connected to the control circuit, and the second end of the first capacitor and the second end of the third resistor are grounded.

[0023] A second aspect of an embodiment of the present application provides a display card, comprising:

[0024] Battery;

[0025] a main controller; and

[0026] As described in the first aspect of the embodiment of the present application, the touch-controlled sliding power on / off circuit is connected to the main controller and the battery.

[0027] In one embodiment, the display card further includes a display screen, and the first touch button and the second touch button are arranged on an inner surface of the display screen.

[0028] The above-mentioned touch-sliding switch circuit replaces the mechanical button by adopting the first touch button, the second touch button and the touch circuit, and solves the problem of short life of the mechanical button in the traditional switch circuit. Moreover, by adopting the delay circuit and the switch circuit, when the second touch button is touched within the preset time after the first touch button is touched (that is, when the first touch button slides to the second touch button within the preset time), the switch circuit will be turned on or off to control the main controller to turn on or off, and avoid the situation of erroneous operation caused by accidentally touching the first touch button or the second touch button. That is, the touch-sliding switch circuit in this embodiment solves the problem of mechanical buttons being easily touched by mistake and having a short life in the traditional display card switch circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A circuit diagram of a touch-controlled sliding switch circuit provided in an embodiment of the present application;

[0030] Figure 2 for Figure 1 A circuit diagram of a switch circuit of a touch-controlled sliding switch circuit shown;

[0031] Figure 3 for Figure 1 Another circuit diagram of the touch-controlled sliding switch circuit shown;

[0032] Figure 4-a for Figure 3 The example circuit schematic diagram of the touch-sensitive sliding switch circuit shown;

[0033] Figure 4-b for Figure 3 Another example circuit schematic diagram of a touch-sensitive sliding switch circuit is shown. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or 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 indirectly connected to the other element.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Figure 1 The circuit diagram of the touch-sliding switch circuit 10 provided in the first aspect of the embodiment of the present application is shown. For the convenience of explanation, only the part related to the present embodiment is shown, which is described in detail as follows:

[0039] The touch sliding switch circuit 10 in this embodiment is connected between the battery 20 and the main controller 30. The touch sliding switch circuit 10 includes: a first touch button 100, a second touch button 200, a touch circuit 300, a delay circuit 400 and a switch circuit 500. The first touch button 100 is connected to a first input end of the touch circuit 300, the second touch button 200 is connected to a second input end of the touch circuit 300, a first output end of the touch circuit 300 is connected to the delay circuit 400, the delay circuit 400 is connected to a first control end of the switch circuit 500, the second output end of the touch circuit 300 is connected to a second control end of the switch circuit 500, the input end of the switch circuit 500 is connected to the battery 20, and the output end of the switch circuit 500 is connected to the main controller 30. The first touch button 100 is used to input a first touch signal; the second touch button 200 is used to input a second touch signal; the touch circuit 300 is used to output a first voltage signal at a first output terminal according to the first touch signal, and is used to output a second voltage signal at a second output terminal according to the second touch signal; the delay circuit 400 is used to receive the first voltage signal and continuously output a driving voltage signal within a preset time period; the switch circuit 500 is used to turn on or off under the simultaneous control of the driving voltage signal and the second voltage signal to control the power on or off of the main controller 30.

[0040] It should be understood that the main controller 30 is a control system of the electronic device, such as a microprocessor such as a single chip microcomputer.

[0041] 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. When the first touch key 100 detects a touch operation, that is, when the first touch key 100 detects a finger, a first touch signal is output, and 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.

[0042] It should be understood that the first output terminal of the touch circuit 300 outputs a low level signal when not receiving the first touch signal; and the second output terminal of the touch circuit 300 outputs a low level signal when not receiving the second touch signal.

[0043] 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 the two input terminals of the capacitive touch chip, and the two output terminals of the capacitive touch chip are respectively used to output the first voltage signal and the second voltage signal. The model 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 button, that is, the touch circuit 300 includes a first capacitor C1 touch chip and a second capacitive touch chip, the input terminal of the first capacitor C1 touch chip is connected to the first touch button 100, the output terminal of the first capacitor C1 touch chip is used to output the first voltage signal, the input terminal of the second capacitive touch chip is connected to the second touch button 200, and the output terminal of the second capacitive touch chip is used to output the 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 capacitor C1 touch chip is the first output end of the touch circuit 300 , and the output end of the second capacitor touch chip is the second output end of the touch circuit 300 .

[0044] Optionally, the delay circuit 400 may be composed of a storage capacitor. When the touch control circuit 300 outputs the first voltage signal, the delay circuit 400 is charged to store the first voltage signal. After the touch control circuit 300 outputs the first voltage signal, the delay circuit 400 starts to output the driving voltage signal (the first voltage signal after delay) to the switch circuit 500, thereby achieving delayed output of the first voltage signal. In other embodiments, the delay circuit 400 may also be composed of a delay device.

[0045] Optionally, the switch circuit 500 may be composed of a controllable electronic switch such as a switch tube.

[0046] The touch-sliding switch circuit 10 in this embodiment replaces the mechanical keys by using the first touch key 100, the second touch key 200 and the touch circuit 300, and solves the problems of mechanical keys being difficult to press, having a short life, and being prone to invalid operations due to the short life of mechanical keys in the traditional switch circuit. Moreover, by using the delay circuit 400 and the switch circuit 500, when the second touch key 200 is touched within a preset time 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), the switch circuit 500 is turned on or off to control the main controller 30 to turn on or off, and avoid the occurrence of erroneous operations due to the accidental touching of the first touch key 100 or the second touch key 200. That is, the touch-sliding switch circuit 10 in this embodiment solves the problems of mechanical keys being prone to accidental touching and having a short life in the traditional switch circuit.

[0047] In one embodiment, the touch-slide switch circuit 10 specifically includes:

[0048] When the main controller is in the shutdown 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 the first control signal to keep the switch circuit turned on;

[0049] When the main controller is in the power-on state, the switch circuit outputs a trigger signal to the main controller under the simultaneous 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 disconnect under the control of the trigger signal.

[0050] It should be understood that the first control signal and the second control signal can be two level signals with opposite level states, for example, the first control signal can be a level signal in a high level state, and the second control signal can be a level signal in a low level state. The trigger signal can be a pulse signal or a voltage signal, etc.

[0051] It should be understood that when the switch circuit is opened, the main controller shuts down due to the loss of power.

[0052] In this embodiment, when the main controller is in the shutdown 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 main controller receives the voltage signal at its power supply end, the first control signal can be output to the switch circuit to maintain the switch circuit turned on, so that after the first touch key and the second touch key no longer output the first touch signal and the second touch signal, the power-on state can be maintained. And when the main controller is in the power-on state, the switch 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 switch circuit, so as to control the switch circuit to be disconnected, thereby realizing the shutdown operation. That is, the touch sliding switch circuit in this embodiment realizes 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 (equivalent to the sliding gestures on the first touch key and the second touch key).

[0053] See also Figure 2 In one embodiment, the switch circuit 500 includes: a control circuit 510, a switch subcircuit 520, and a pull-down circuit 530. The control circuit 510 is connected to the touch circuit 300 and the delay circuit 400, the switch subcircuit 520 is connected in series between the power supply terminal of the battery 20 and the main controller 30, the control terminal of the switch subcircuit 520 is connected to the control circuit 510, the pull-down circuit 530 is connected to the control terminal of the switch subcircuit 520 and the ground, and the control terminal of the pull-down circuit 530 is connected to the main controller 30. The control circuit 510 is used to be turned on to the ground under the control of the driving voltage signal and the second voltage signal; the switch subcircuit 520 is used to be turned on when the control circuit 510 is turned on to the ground, so as to turn on the power supply terminal of the battery 20 and the main controller 30; the pull-down circuit 530 is used to be turned on under the control of the main controller 30 to maintain the switch subcircuit 520 turned on.

[0054] It should be understood that when the control circuit 510 is connected to the ground, the control terminal of the switch sub-circuit 520 is a low-level signal. After the control circuit 510 controls the switch sub-circuit 520 to be turned on, the battery 20 is connected to the power supply terminal of the main controller 30, and the main controller 30 is turned on. Immediately after the main controller 30 is turned on, it outputs a control signal to the pull-down circuit 530 to maintain the switch sub-circuit 520 turned on, that is, to maintain its own turned-on state.

[0055] It should be understood that the switch circuit 500 in this embodiment, by adopting the control circuit 510 and the switch sub-circuit 520, realizes that the switch sub-circuit 520 is turned on only when the driving voltage signal and the second voltage signal are received at the same time, that is, the main controller 30 is turned on only when the first touch button 100 is touched first and then the second touch button 200 is touched, thereby avoiding the problem of misoperation in traditional technical solutions; and by adopting the pull-down circuit 530, the conduction of the switch sub-circuit 520 is maintained after the main controller 30 is turned on.

[0056] See also Figure 3 In one embodiment, the switch circuit 500 further includes a detection circuit 540, which is connected to the detection pins of the control circuit 510 and the main controller 30. The detection circuit 540 is used to output a trigger signal to the main controller 30 when the control circuit 510 is turned on to the ground; the main controller 30 is also used to control the pull-down circuit 530 to turn off when triggered by the trigger signal, so as to control the switch sub-circuit 520 to disconnect.

[0057] It should be understood that the detection circuit 540 can be a current detection or a voltage detection, etc. By detecting whether the control circuit 510 is connected to the ground, it is determined whether the control circuit 510 receives the driving voltage signal and the second voltage signal, that is, whether the first touch key 100 and the second touch key 200 have corresponding touch signals input. 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; when the main controller 30 is in the on state, after the main controller 30 receives the trigger signal, the original control of the pull-down circuit 530 is switched on to the control of the pull-down circuit 530 being switched off, thereby disconnecting the switch sub-circuit 520, that is, realizing the shutdown operation.

[0058] The touch sliding power on / off circuit 10 in this embodiment is equipped with a detection circuit 540, so that when the power is on, when the gesture is to first touch the first touch button 100 and then touch the second touch button 200, the main controller 30 can be shut down. That is, the touch sliding power on / off circuit 10 in this embodiment uses a unified touch gesture to realize the power on / off control of the main controller 30.

[0059] See also Figure 4-a and Figure 4-b In one embodiment, the control circuit 510 includes: a first resistor R1, a first switch tube Q1 and a second switch tube Q2, the first end of the first resistor R1 is connected to the battery 20, the first switch tube Q1 and the second switch tube Q2 are connected in series between the second end of the first resistor R1 and the ground, the second end of the first resistor R1 is connected to the control end of the switch sub-circuit 520, the control end of the first switch tube Q1 is connected to the delay circuit 400, and the control end of the second switch tube Q2 is connected to the touch circuit 300.

[0060] It should be understood that the first switch tube Q1 and the second switch tube Q2 are in a series relationship. For example, the connection between the first switch tube Q1 and the second switch tube Q2 can be specifically:

[0061] 1. Please refer to Figure 4-a The second end of the first resistor R1 and the high potential end of the first switch tube Q1 are connected to the control end of the switch sub-circuit 520, the low potential end of the first switch tube Q1 is connected to the high potential end of the second switch tube Q2, and the low potential end of the second switch tube Q2 is connected to the first output end of the touch circuit 300.

[0062] 2. Please refer to Figure 4-b The second end of the first resistor R1 and the high potential end of the second switch tube Q2 are connected to the control end of the switch sub-circuit 520, the low potential end of the second switch tube Q2 is connected to the high potential end of the first switch tube Q1, and the low potential end of the first switch tube Q1 is connected to the first output end of the touch circuit 300.

[0063] It should be understood that the first switch tube Q1 and the second switch tube Q2 in this embodiment are NMOS tubes, the gate of the NMOS tube is the control terminal, the drain of the NMOS tube is the high potential terminal, and the source of the NMOS tube is the low potential terminal. In other embodiments, other types of switch tubes can also be used.

[0064] It should be understood that when the first touch button 100 is not touched, that is, the first touch button 100 does not output the first touch signal, the first output end of the touch circuit 300 outputs a low-level signal. When the first output end of the touch circuit 300 outputs a low-level signal, the low potential end of the second switch tube Q2 is equivalent to grounding.

[0065] It should be understood that Figure 4-a For example, in this embodiment, the control circuit 510 will output a low-level signal only when the first switch tube Q1 and the second switch tube Q2 are turned on at the same time, thereby controlling the switch sub-circuit 520 to be turned on. In addition, the control circuit 510 in this embodiment will be turned on only when the first output terminal of the touch circuit 300 outputs a low-level signal and the control terminal of the second switch tube Q2 receives the second voltage signal, that is, only when the first touch key 100 is pressed first and the second touch key 200 is pressed within a preset time, the first voltage signal (i.e., the driving voltage signal) after the delay of 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 will simultaneously control the first switch tube Q1 and the second switch tube Q2 to be turned on. That is, the erroneous operation caused by touching the first touch key 100 and the second touch key 200 at the same time, and the erroneous operation caused by touching the first touch key 100 or the second touch key 200 alone, etc. are avoided.

[0066] The control circuit 510 in this embodiment uses the first resistor R1, the first switch tube Q1 and the second switch tube Q2 to realize that it is turned on only when the driving voltage signal and the second voltage signal are received at the same time, that is, it is realized that only when the first touch key 100 is pressed first and the second touch key 200 is pressed within a preset time,

[0067] See also Figure 4-a In one embodiment, the detection circuit 540 includes a first diode D1 , a cathode of the first diode D1 is connected to a high potential end of the first switch tube Q1 , and an anode of the first diode D1 is connected to the main controller 30 .

[0068] It should be understood that the detection circuit 540 in this embodiment is connected to the pull-up resistor inside the main controller 30. When the control circuit 510 is turned on, the pull-up resistor is pulled down to the 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 realizes unidirectional detection between the detection end of the main controller 30 and the control circuit 510 by using the first diode D1, and the circuit is simple.

[0069] See also Figure 4-a In one embodiment, the switch subcircuit 520 includes: a second resistor R2 and a third switch tube Q3, the first end of the second resistor R2 and the high potential end of the third switch tube Q3 are connected to the battery 20, the second end of the second resistor R2 and the control end of the third switch tube Q3 are connected to the control circuit 510 and the pull-down circuit 530, and the low potential end of the third switch tube Q3 is connected to the power supply end of the main controller 30.

[0070] It should be understood that the third switch tube Q3 in this embodiment is a PMOS tube, the gate of the PMOS tube is the control end, the drain of the PMOS tube is the low potential end, and the source of the PMOS tube is the high potential end. In other embodiments, other types of switch tubes can also be used.

[0071] See also Figure 4-a In one embodiment, the pull-down circuit 530 includes: a fourth switch tube Q4, a high potential end of the fourth switch tube Q4 is connected to the control end of the switch sub-circuit 520, a low potential end of the fourth switch tube Q4 is grounded, and the control end of the fourth switch tube Q4 is connected to the main controller 30.

[0072] It should be understood that the fourth switch tube Q4 in this embodiment is an NMOS tube, the gate of the NMOS tube is the control end, the drain of the NMOS tube is the high potential end, and the source of the NMOS tube is the low potential end. In other embodiments, other types of switch tubes can also be used.

[0073] See also Figure 4-a In one embodiment, the delay circuit 400 includes a second diode D2, a first capacitor C1 and a third resistor R3, the anode of the second diode D2 is connected to the touch circuit 300, the cathode of the second diode D2, the first end of the first capacitor C1 and the first end of the third resistor R3 are connected to the control circuit 510, and the second end of the first capacitor C1 and the second end of the third resistor R3 are grounded.

[0074] It should be understood that the delay circuit 400 in this embodiment achieves 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 remains turned on within a preset time. The preset time is associated with the capacitance of the capacitor.

[0075] For easier understanding, see Figure 4-a One of the working processes of the touch sliding circuit in this embodiment is briefly described as follows:

[0076] 1. When no finger is detected, the first touch button 100 and the second touch button 200 output a low level, the touch circuit 300 outputs a low level, the first switch tube Q1, the second switch tube Q2, the third switch tube Q3 and the fourth switch tube Q4 are all in the off state, and the main controller 30 is in the off state;

[0077] 2. When the main controller 30 is turned off, use a finger to slide from the first touch key 100 to the second touch key 200. The touch circuit 300 first detects that the first touch key 100 has an input. At this time, the first output terminal of the touch circuit 300 outputs a first voltage signal in a high level state, which charges the first capacitor C1 through the second diode D2, and the first switch tube Q1 is turned on; when sliding 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, and the first output terminal of the touch circuit 300 outputs a low level. level, the first output terminal of the touch control 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, and since the first capacitor C1 has been charged, the first switch tube Q1 is still turned on at this time. At this time, the control end (gate) of the third switch tube Q3 will become 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 end of the fourth switch tube Q4, and the fourth switch tube Q4 is turned on. After the fourth switch tube Q4 is turned on, the third switch tube Q3 will remain in the on state, realizing the power-on function;

[0078] 3. In the power-on state, use your finger to slide from the first touch key 100 to the second touch key 200. The touch circuit 300 first detects the first touch signal output by the first touch key 100. At this time, the first output terminal of the touch circuit outputs a high level, and charges the first capacitor C1 through the second diode D2. The first switch tube Q1 is turned on. When sliding from the first touch key 100 to the second touch key 200, the second output terminal of the touch circuit 300 outputs a high level, and the first output terminal of the touch circuit 300 outputs a low level. At this time, the second switch tube Q2 is turned on. Since the first capacitor C1 has been charged, the first switch tube Q1 is still turned on. At this time, the high potential terminal of the first switch tube Q1 will become a low level because the first switch tube Q1 and the second switch tube Q2 are turned on to the ground. The main controller 30 detects a low-level trigger signal through the detection circuit 540, and the main controller 30 controls the pull-down circuit 530 to close. After the first capacitor C1 is discharged through the third resistor R3 until the first switch tube Q1 is disconnected, the control terminal of the third switch tube Q3 is a high level, and the third switch tube Q3 is turned off to realize the shutdown function;

[0079] 4. If the finger touches only one of the pads of the first touch button 100 or the second touch button 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, and 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;

[0080] 5. If the finger slides from the second touch key 200 to the first touch key 100, after sliding 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 the finger leaves, and the second switch tube Q2 is turned off, so that the third switch tube Q3 cannot be turned on, and the system cannot be powered on;

[0081] 6. If the finger touches the first touch button 100 and the second touch button 200 at the same time, the first output end of the touch circuit 300 and the second output end of the touch circuit 300 will output a high level at the same time. Since the low potential end of the second diode D2 is connected to the first output end of the touch circuit 300, that is, the low potential end of the second diode D2 is a high level at this time, the second switch tube Q2 cannot be turned on, so the third switch tube Q3 cannot be turned on, and the system cannot be powered on.

[0082] A second aspect of the present application provides a display card, including: a battery 20 , a main controller 30 , and a touch-slide power-on / off circuit 10 according to the first aspect of the present application. The touch-slide power-on / off circuit 10 is connected to the main controller 30 and the battery 20 .

[0083] It should be understood that the display card in this embodiment adopts the touch sliding power on / off circuit 10 to replace the traditional power on / off circuit, thereby solving the problems of mechanical buttons being difficult to press, prone to accidental touches, and invalid operations in traditional display cards, while avoiding the situation where mechanical buttons occupy the outer surface setting area and structure of the display card.

[0084] Optionally, in one embodiment, the display card further includes a display screen, and the first touch button 100 and the second touch button 200 are disposed on an inner surface of the display screen.

[0085] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated in one processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit, and the above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0086] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A touch-sliding switch circuit, characterized in that: Connected between the battery and the main controller, the touch-sliding switch circuit includes: A first touch button, used for inputting a first touch signal; A second touch button, used for inputting a second touch signal; a touch control circuit connected to the first touch control button and the second touch control button, the touch control circuit being used to output a first voltage signal at a first output terminal according to the first touch control signal, and being used to output a second voltage signal at a second output terminal according to the second touch control signal; a delay circuit connected to the first output terminal of the touch control circuit, configured to receive the first voltage signal and continuously output a driving voltage signal within a preset time period; and a switch circuit connected to the touch control circuit, the delay circuit, the battery and the main controller, the switch circuit being configured to be turned on or off under the simultaneous control of the driving voltage signal and the second voltage signal to control the main controller to start or shut down; When the main controller is in a shutdown 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 turned on; When the main controller is in the power-on state, the switch circuit outputs a trigger signal to the main controller under the simultaneous control of the drive voltage signal and the second voltage signal, and the main controller outputs a second control signal to control the switch circuit to disconnect under the control of the trigger signal.

2. The touch-sliding switch circuit according to claim 1, characterized in that: The switch circuit comprises: A control circuit, the control circuit being connected to the touch control circuit and the delay circuit, the control circuit being configured to be turned on to ground under the simultaneous control of the driving voltage signal and the second voltage signal; a switch subcircuit, the switch subcircuit being connected in series between the battery and the power supply terminal of the main controller, the control terminal of the switch subcircuit being connected to the control circuit, the switch subcircuit being turned on when the control circuit is turned on to ground, so as to turn on the battery and the power supply terminal of the main controller; and A pull-down circuit is connected to the control end of the switch sub-circuit and the ground, the control end of the pull-down circuit is connected to the main controller, and the pull-down circuit is used to be turned on under the control of the main controller to maintain the switch sub-circuit turned on.

3. The touch-sliding switch circuit according to claim 2, characterized in that: The switch circuit also includes a detection circuit, which is connected to the control circuit and the detection pin of the main controller. The detection circuit is used to output a trigger signal to the main controller when the control circuit is turned on to ground; the main controller is also used to control the pull-down circuit to turn off when triggered by the trigger signal, so as to control the switch sub-circuit to disconnect.

4. The touch-controlled sliding switch circuit according to claim 3, characterized in that: The control circuit includes: a first resistor, a first switch tube and a second switch tube, the first end of the first resistor is connected to the battery, the first switch tube and the second switch tube are connected in series between the second end of the first resistor and the ground, the second end of the first resistor is connected to the control end of the switch sub-circuit, the control end of the first switch tube is connected to the delay circuit, and the control end of the second switch tube is connected to the touch circuit.

5. The touch-sliding switch circuit according to claim 4, characterized in that: The detection circuit includes a first diode, a cathode of the first diode is connected to the high potential end of the first switch tube, and an anode of the first diode is connected to the main controller.

6. The touch-sliding switch circuit according to claim 3, characterized in that: The switch subcircuit includes: a second resistor and a third switch tube, the first end of the second resistor and the high potential end of the third switch tube are connected to the battery, the second end of the second resistor and the control end of the third switch tube are connected to the control circuit and the pull-down circuit, and the low potential end of the third switch tube is connected to the power supply end of the main controller.

7. The touch-sliding switch circuit according to claim 3, characterized in that: The pull-down circuit includes: a fourth switch tube, a high potential end of the fourth switch tube is connected to the control end of the switch sub-circuit, a low potential end of the fourth switch tube is grounded, and the control end of the fourth switch tube is connected to the main controller.

8. The touch-controlled sliding switch circuit according to any one of claims 3 to 7, characterized in that: The delay circuit includes a second diode, a first capacitor and a third resistor, the positive electrode of the second diode is connected to the touch circuit, the negative electrode of the second diode, the first end of the first capacitor and the first end of the third resistor are connected to the control circuit, and the second end of the first capacitor and the second end of the third resistor are grounded.

9. A display card, characterized in that: include: Battery; Main controller; as well as The touch-sliding power on / off circuit according to any one of claims 1 to 8, wherein the touch-sliding power on / off circuit is connected to the main controller and the battery.

10. The display card according to claim 9, wherein: Also includes: A display screen, wherein the first touch button and the second touch button are arranged on an inner surface of the display screen.

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