Touch circuit

Abstract

The utility model provides a touch circuit, and belongs to the technical field of touch equipment. The touch control circuit comprises a pulley module, a slider module, a plurality of independent key bonding pads and a touch control chip, a plurality of detection pins are arranged on the touch control chip, the pulley module comprises a plurality of pulley key bonding pads, and the slider module comprises a plurality of slider key bonding pads. Each pulley key bonding pad, each slider key bonding pad and each independent key bonding pad are respectively connected to a detection pin in the touch chip, and the detection pins connected with the pulley key bonding pads, the slider key bonding pads and the independent key bonding pads are different; the touch control chip obtains the touch control states of the pulley key bonding pads, the slider key bonding pads and the independent key bonding pads through the detection pins, generates corresponding control instructions and sends the control instructions to the controlled device. According to the application, the effects of improving the anti-interference capability of the capacitive touch key and improving the operation experience of a user in the process of using intelligent remote control can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch control devices, in particular to a touch control circuit. BACKGROUND

[0002] Capacitive touch keys are widely used in electronic products such as induction cookers, microwave ovens, soybean milk machines, blenders, intelligent door locks, intelligent bathrooms, intelligent lamps and lanterns, etc. Although the capacitive touch key has the advantage of high detection sensitivity, it is sensitive to power fluctuations, especially common mode interference. Therefore, the capacitive touch key urgently needs a safe and reliable anti-interference circuit.

[0003] In related technologies, the anti-interference circuit of the capacitive touch key is usually realized by multiple key pads, multiple touch channels and a touch chip. One end of each touch channel is connected to one key pad, and the other end of each touch channel is connected to one pin of the touch chip. Each touch channel corresponds to each key pad one by one, and the detection pin of the detection circuit of the touch chip is grounded through a filter capacitor. Among them, a filter capacitor is connected to one pin of the touch chip and grounded, and the pin channel of the touch chip is used as a common filter channel for all key channels to eliminate the interference of power fluctuations on each touch key.

[0004] However, based on the related technology design of the anti-interference circuit of the capacitive touch key, although the power anti-interference ability of the capacitive touch key can be improved, such capacitive touch key has the problems of single operation experience and key signal collection susceptible to interference. Content of the utility model

[0005] The purpose of the present application is to provide a touch control circuit that can improve the anti-interference ability of capacitive touch keys and improve the operation experience of users during the use of intelligent remote control.

[0006] Embodiments of the present application are implemented as follows:

[0007] In a first aspect of the embodiments of the present application, a touch control circuit is provided, which includes a pulley module, a slide bar module, multiple independent key pads and a touch chip. The touch chip is provided with multiple detection pins. The pulley module includes multiple pulley key pads, and the slide bar module includes multiple slide bar key pads. Each pulley key pad, each slide bar key pad and each independent key pad are arranged on a printed circuit board.

[0008] Each pulley key pad in the pulley module is connected to a detection pin in the touch control chip, each slide key pad in the slide module is connected to a detection pin in the touch control chip, and each independent key pad is connected to a detection pin in the touch control chip, and the detection pins connected by the pulley key pads, the slide key pads and the independent key pads are all different;

[0009] The touch control chip obtains the touch states of the pulley key pads, the slide key pads and the independent key pads based on the detection pins, generates control instructions corresponding to the pulley key pads, the slide key pads and the independent key pads according to the touch states, and sends the control instructions to the controlled device.

[0010] As a possible implementation, the plurality of pulley key pads include a first pulley key pad, a second pulley key pad, a third pulley key pad and a fourth pulley key pad;

[0011] The first pulley key pad, the second pulley key pad, the third pulley key pad and the fourth pulley key pad are arranged in a ring shape on the printed circuit board in sequence;

[0012] The touch control chip obtains the touch states of the first pulley key pad, the second pulley key pad, the third pulley key pad and the fourth pulley key pad based on the detection pins, generates corresponding color adjustment control instructions according to the touch states of the first pulley key pad, the second pulley key pad, the third pulley key pad and the fourth pulley key pad, and sends the control instructions to the controlled device.

[0013] As a possible implementation, the pulley module further includes a first resistor, a second resistor, a third resistor and a fourth resistor;

[0014] The first pulley key pad is connected to the corresponding detection pin in the touch control chip via the first resistor;

[0015] The second pulley key pad is connected to the corresponding detection pin in the touch control chip via the second resistor;

[0016] The third pulley key pad is connected to the corresponding detection pin in the touch control chip via the third resistor;

[0017] The fourth pulley key pad is connected to the corresponding detection pin in the touch control chip via the fourth resistor.

[0018] As a possible implementation, the slide module includes a first slide key pad, a second slide key pad and a third slide key pad;

[0019] The first slide key pad, the second slide key pad and the third slide key pad are arranged in a strip shape on the printed circuit board in sequence;

[0020] The touch chip obtains the touch states of the first slide key pad, the second slide key pad and the third slide key pad based on the detection pins, and generates corresponding dimming control instructions according to the touch states of the first slide key pad, the second slide key pad and the third slide key pad, and sends the dimming control instructions to the controlled device.

[0021] As a possible implementation, the slide module further comprises a fifth resistor, a sixth resistor and a seventh resistor;

[0022] The first slide key pad is connected to the corresponding detection pin in the touch chip via the fifth resistor;

[0023] The second slide key pad is connected to the corresponding detection pin in the touch chip via the sixth resistor;

[0024] The third slide key pad is connected to the corresponding detection pin in the touch chip via the seventh resistor.

[0025] As a possible implementation, the touch circuit further comprises a plurality of resistors;

[0026] Each independent key pad is connected to the corresponding detection pin in the touch chip via a resistor, and the independent key pad and the resistor are in one-to-one correspondence.

[0027] As a possible implementation, the touch circuit further comprises a filter module, and the touch chip further comprises a power input pin;

[0028] One end of the filter module is connected to the power input pin of the touch chip, and the other end of the filter module is grounded.

[0029] As a possible implementation, the filter module comprises a first capacitor, a second capacitor and a third capacitor;

[0030] One end of the first capacitor, one end of the second capacitor and one end of the third capacitor are connected to the power input pin of the touch chip, and the other end of the first capacitor, the other end of the second capacitor and the other end of the third capacitor are grounded.

[0031] As a possible implementation, the touch circuit further comprises a protection module, and the touch chip further comprises a driving pin;

[0032] One end of the protection module is connected to the driving pin of the touch chip, and the other end of the protection module is grounded.

[0033] As a possible implementation, the protection module comprises a fourth capacitor;

[0034] One end of the fourth capacitor is connected with a driving pin of the touch chip, and the other end of the fourth capacitor is grounded.

[0035] The beneficial effects of the embodiments of the present application include:

[0036] The touch circuit provided by the embodiments of the present application is composed of a pulley module, a slide bar module, a plurality of independent key pads and a touch chip. The touch chip is provided with a plurality of detection pins. The pulley module includes a plurality of pulley key pads, the slide bar module includes a plurality of slide bar key pads, and each pulley key pad, each slide bar key pad and each independent key pad are arranged on a printed circuit board. Each pulley key pad, each slide bar key pad and each independent key pad are connected with one detection pin of the touch chip respectively, and each pulley key pad, each slide bar key pad and each independent key pad correspond to each detection pin of the touch chip one by one. The touch chip obtains the touch states of each pulley key pad, each slide bar key pad and each independent key pad through each detection pin, generates corresponding control instructions according to the touch states of each pulley key pad, each slide bar key pad and each independent key pad, and sends the control instructions to a controlled device, so as to control the controlled device. In this way, the anti-interference ability of the capacitive touch key can be improved, and the operation experience of the user in the process of using the intelligent remote control can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0038] Figure 1 It is an anti-interference circuit diagram of an existing touch key;

[0039] Figure 2 It is a working principle diagram of a capacitive touch key provided by the embodiments of the present application;

[0040] Figure 3 It is a touch circuit diagram provided by the embodiments of the present application;

[0041] Figure 4 It is a structural schematic diagram of a pulley module provided by the embodiments of the present application;

[0042] Figure 5 It is a structural schematic diagram of a slide bar module provided by the embodiments of the present application;

[0043] Figure 6 A structure diagram of a touch chip provided by an embodiment of the present application is shown in the figure;

[0044] Figure 7 A connection diagram of an independent key pad and a touch chip provided by an embodiment of the present application is shown in the figure;

[0045] Figure 8 A structure diagram of a filter module provided by an embodiment of the present application is shown in the figure;

[0046] Figure 9 A structure diagram of a protection module provided by an embodiment of the present application is shown in the figure.

[0047] BRIEF DESCRIPTION OF DRAWINGS: 10: Anti-interference circuit; 101: touch chip; 102: touch channel; 103: key pad; 20: touch circuit; 201: pulley module; 011: first pulley key pad; 111: first resistor; 012: second pulley key pad; 121: second resistor; 013: third pulley key pad; 131: third resistor; 014: fourth pulley key pad; 141: fourth resistor; 202: slide module; 021: first slide key pad; 211: fifth resistor; 022: second slide key pad; 221: sixth resistor; 023: third slide key pad; 231: seventh resistor; 203: independent key pad; 204: touch chip; 205: filter module; 51: first capacitor; 52: second capacitor; 53: third capacitor; 206: protection module; 61: fourth capacitor; 30: printed circuit board; 40: smart remote controller. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0050] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0051] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0053] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] At present, the anti-interference circuit of the capacitive touch key is usually realized by a plurality of key pads, a plurality of touch channels and a touch chip. Each key pad is connected with the touch chip through each touch channel, each key pad corresponds to each touch channel, a single pin of the touch chip is often connected with a filter capacitor and grounded, and the pin of the touch chip connected with the filter capacitor is used as a common filter channel of all key channels to eliminate the interference of power fluctuation on each touch key. However, although this scheme can improve the power anti-interference ability of the capacitive touch key, the capacitive touch key produced by applying this anti-interference circuit has the problems of single operation experience and key signal collection susceptible to external interference.

[0055] To this end, the embodiment of the present application provides a touch circuit, which is composed of a pulley module, a slide bar module, a plurality of independent key pads and a touch chip. The touch chip is provided with a plurality of detection pins. The pulley module comprises a plurality of pulley key pads. The slide bar module comprises a plurality of slide bar key pads. Each pulley key pad, each slide bar key pad and each independent key pad is connected with one detection pin of the touch chip. The touch chip obtains the touch states of each pulley key pad, each slide bar key pad and each independent key pad based on each detection pin, and generates corresponding control instructions based on the obtained touch states and sends the control instructions to a controlled device. The controlled device performs corresponding actions in response to the control instructions. In this way, the anti-interference ability of the capacitive touch key can be improved, and the operation experience of the user in the process of using the intelligent remote control can be improved.

[0056] Figure 1 For an existing anti-interference circuit diagram of a touch key, see Figure 1 The existing anti-interference circuit 10 of the touch key is composed of a plurality of key pads 103, a plurality of touch channels 102 and a touch chip 101. Each key pad 103 is connected with a touch pin of the touch chip 101 through each touch channel 102. One end of one touch channel 102 is connected with one key pad 103, and the other end of one touch channel 102 is connected with one touch pin of the touch chip 103. Each touch channel 102 corresponds to each key pad 103 one by one. The detection pin of the touch chip 103 is grounded through a filtering capacitor.

[0057] Optionally, in the existing anti-interference circuit 10 of the touch key, one detection pin of the touch chip 101 is grounded through a filtering capacitor to treat the interference of power fluctuation on the touch key. The detection pin connected with the filtering capacitor in the touch chip 101 serves as a common filtering channel of all touch channels 102 to improve the complexity of the traditional anti-interference circuit of the capacitive touch key.

[0058] Optionally, the traditional anti-interference circuit of the capacitive touch key is to connect a grounded filtering capacitor in parallel on each touch channel to eliminate the interference of power fluctuation on the key signal. However, with the increase in the number of touch channels in the electronic device, more grounded filtering capacitors need to be added in the electronic device to improve the power anti-interference ability of the capacitive touch key, resulting in complex design of the anti-interference circuit of the capacitive touch key and multiplied production cost.

[0059] Figure 2 For the working principle diagram of the capacitive touch key provided by the present application, see Figure 2In a capacitive touch button provided in an embodiment of the present application, U2 represents the touch chip, Touch IO represents a detection pin of the touch chip, and the button pad is connected to the detection pin of the touch chip via a resistor. Cy is the induced capacitance formed between the user's finger and the ground when the touch button is pressed; Cx is the induced capacitance formed between the button pad and the ground. Neither the induced capacitance Cy nor the induced capacitance Cx is actually electrically connected to the button pad.

[0060] Optionally, the key pads may be implemented by printed copper foil on a printed circuit board, and each key pad is connected to a detection pin on the touch control chip U2 via a resistor.

[0061] Optionally, each key pad forms an inductive capacitor Cx with the ground. Under conditions in which the surrounding environment remains unchanged, the capacitance value of the inductive capacitor Cx remains fixed. When a finger presses a button on the intelligent remote control to trigger the key pad, the inductive capacitor Cy formed between the finger and the ground is connected in parallel to the inductive capacitor Cx formed between the key pad and the ground, which increases the capacitance value of the total inductive capacitance of the key pad. After the detection pin connected to the key pad in the touch chip detects a change in the inductive capacitance value of the key pad, it determines that the key pad is pressed, and the touch chip generates a control instruction corresponding to the key pad.

[0062] The touch control circuit and the smart remote controller provided in the embodiments of the present application are explained in detail below with reference to the accompanying drawings.

[0063] Figure 3 A touch circuit diagram provided in this application, see Figure 2 The touch circuit 20 provided in the embodiment of the present application includes: a pulley module 201, a slider module 202, multiple independent button pads 203, and a touch chip 204. The touch chip 204 is provided with multiple detection pins. The pulley module 201 includes multiple pulley button pads, and the slider module 202 includes multiple slider button pads. Each pulley button pad, each slider button pad, and each independent button pad 203 are all provided on a printed circuit board 30.

[0064] Optionally, the touch circuit 20 is realized by the pulley module 201, the slide module 202, the plurality of independent key pads 203 and the touch chip 204, wherein the pulley module 201 comprises a plurality of pulley key pads which comprehensively realize a complete control function; the slide module 202 comprises a plurality of slide key pads which comprehensively realize a complete control function, that is, the pulley module 201 is regarded as a whole, the slide module 202 can also be regarded as a whole, the pulley module 201 indicates a control function alone, the slide module 202 indicates a control function alone, for example, the pulley module 201 can be used for adjusting brightness, adjusting color, etc., the slide module 202 can be used for adjusting light, adjusting brightness value, etc., which is not limited in the present application.

[0065] Optionally, the independent key pads 203 are used for indicating other key pads independent of the pulley module 201 and the slide module 202, each independent key pad 203 can realize a control function alone; each pulley key pad in the pulley module 201 comprehensively realizes a control function, each slide key pad in the slide module 202 comprehensively realizes a control function, the pulley module 201, the slide module 202 and each independent key pad 203 can realize different control functions, and the control processes among the pulley module 201, the slide module 202 and each independent key pad 203 do not interfere with each other.

[0066] Optionally, each pulley key pad in the pulley module 201, each slide key pad in the slide module 202 and each independent key pad 203 are arranged on the printed circuit board 30, each pulley key pad, each slide key pad and each independent key pad 203 can be realized by printed copper foil on the printed circuit board, and each pulley key pad, each slide key pad and each independent key pad are connected to the corresponding keys on the intelligent remote controller via springs.

[0067] Each pulley key pad in the pulley module 201 is connected to a detection pin in the touch chip 204, each slide key pad in the slide module 202 is connected to a detection pin in the touch chip 204, each independent key pad 203 is connected to a detection pin in the touch chip 204, and the detection pins connected by each pulley key pad, each slide key pad and each independent key pad 203 are all different.

[0068] Optionally, a plurality of detection pins are arranged on the touch chip 204, each pulley key pad in the pulley module 201 is connected with a detection pin of the touch chip 204, each slide key pad in the slide module 202 is connected with a detection pin of the touch chip 204, and each independent key pad 203 is connected with a detection pin of the touch chip 204. The independent key pad 203, the pulley key pad and the slide key pad correspond to the detection pin of the touch chip 204 one by one, that is, the touch chip 204 can obtain the touch state of the independent key pad 203, the pulley key pad and the slide key pad through the detection pin.

[0069] It is worth noting that the detection pin of the touch chip 204 can be realized by the IO port of the touch chip, and the touch chip 204 obtains the self-induction capacitance value of the independent key pad 203, the pulley key pad and the slide key pad through the detection pin.

[0070] The touch chip 204 obtains the touch state of the independent key pad 203, the pulley key pad and the slide key pad based on the detection pin, generates the control instruction corresponding to the independent key pad 203, the pulley key pad and the slide key pad according to the touch state, and sends it to the controlled device.

[0071] Optionally, the touch state of the pulley key pad is used to indicate whether the corresponding key on the smart remote controller is pressed, that is, the change of the self-induction capacitance value of the pulley key pad; the touch state of the slide key pad is used to indicate whether the corresponding key on the smart remote controller is pressed, that is, the change of the self-induction capacitance value of the slide key pad; and the touch state of the independent key pad is used to indicate whether the corresponding key on the smart remote controller is pressed, that is, the change of the self-induction capacitance value of the independent key pad.

[0072] Optionally, a microprocessor is integrated on the touch chip 204, and the touch chip 204 obtains the self-induction capacitance value of the independent key pad 203, the pulley key pad and the slide key pad based on the detection pin, and judges whether the corresponding key of the independent key pad 203, the pulley key pad and the slide key pad on the smart remote controller is pressed according to the self-induction capacitance value of the independent key pad 203, the pulley key pad and the slide key pad.

[0073] Optionally, the control instruction is a control signal for controlling the running state of the controlled device, the touch chip 204 generates the control instruction according to the touch states of the plurality of pulley key pads, the plurality of slide key pads and the plurality of independent key pads 203, and sends the control instruction to the controlled device based on wireless communication, which is used for indicating a load, and the controlled device can be a smart lamp, a smart bathroom, etc., which are not limited in the present application.

[0074] In the embodiment of the present application, the touch circuit is composed of a pulley module, a slide module, a plurality of independent key pads and a touch chip, a plurality of detection pins are arranged on the touch chip, the pulley module includes a plurality of pulley key pads, the slide module includes a plurality of slide key pads, and each of the pulley key pads, the slide key pads and the independent key pads is arranged on the printed circuit board. Among them, each of the pulley key pads, the slide key pads and the independent key pads is connected with one detection pin of the touch chip, and each of the pulley key pads, the slide key pads and the independent key pads corresponds to each detection pin on the touch chip; the touch chip obtains the touch states of the pulley key pads, the slide key pads and the independent key pads through the detection pins, and generates corresponding control instructions according to the touch states of the pulley key pads, the slide key pads and the independent key pads, and sends the control instructions to the controlled device to control the controlled device. In this way, the anti-interference ability of the capacitive touch key can be improved, and the operation experience of the user in the process of using the smart remote control can be improved.

[0075] Figure 4 A structural schematic diagram of a pulley module provided by the present application is shown in FIG. 1. Figure 4 The pulley module 201 provided by the embodiment of the present application includes a plurality of pulley key pads, which are respectively a first pulley key pad 011, a second pulley key pad 012, a third pulley key pad 013 and a fourth pulley key pad 014.

[0076] The first pulley key pad 011, the second pulley key pad 012, the third pulley key pad 013 and the fourth pulley key pad 014 are arranged in a ring shape on the printed circuit board 30 in sequence.

[0077] Optionally, the first pulley key pad 011, the second pulley key pad 012, the third pulley key pad 013 and the fourth pulley key pad 014 can be realized by printed copper foils on the printed circuit board 30, and the printed copper foils corresponding to the first pulley key pad 011, the second pulley key pad 012, the third pulley key pad 013 and the fourth pulley key pad 014 are distributed in a clockwise ring shape on the printed circuit board from the nine o'clock direction in sequence.

[0078] Optionally, the annular copper foil ring formed by the printed copper foil corresponding to the first pulley key pad 011, the printed copper foil corresponding to the second pulley key pad 012, the printed copper foil corresponding to the third pulley key pad 013, and the printed copper foil corresponding to the fourth pulley key pad is the pulley module 201.

[0079] The touch chip 204 obtains the touch states of the first pulley key pad 011, the second pulley key pad 012, the third pulley key pad 013, and the fourth pulley key pad 014 based on the detection pins, and generates corresponding color control instructions according to the touch states of the first pulley key pad 011, the second pulley key pad 012, the third pulley key pad 013, and the fourth pulley key pad 014, and sends the color control instructions to the controlled device.

[0080] Optionally, the touch chip 204 obtains the self-induction capacitance value of the first pulley key pad 011 through the detection pin connected to the printed copper foil corresponding to the first pulley key pad 011; the touch chip 204 obtains the self-induction capacitance value of the second pulley key pad 012 through the detection pin connected to the printed copper foil corresponding to the second pulley key pad 012; the touch chip 204 obtains the self-induction capacitance value of the third pulley key pad 013 through the detection pin connected to the printed copper foil corresponding to the third pulley key pad 013; and the touch chip 204 obtains the self-induction capacitance value of the fourth pulley key pad 014 through the detection pin connected to the printed copper foil corresponding to the fourth pulley key pad 014.

[0081] Optionally, the color control instruction is used to indicate a control signal for controlling the controlled device to regulate the display color, and the touch chip 204 generates corresponding color control instructions according to the touch states of the first pulley key pad 011, the second pulley key pad 012, the third pulley key pad 013, and the fourth pulley key pad 014 in the pulley module 201. Although the pulley module 201 is used to control the color of the controlled device, the colors indicated by the keys corresponding to the pulley key pads in the pulley module 201 are different.

[0082] In an optional embodiment, referring to Figure 4 The pulley module 201 in the touch circuit 20 provided by the embodiment of the present application further includes a first resistor 111, a second resistor 121, a third resistor 131, and a fourth resistor 141.

[0083] The first pulley key pad 011 is connected to the corresponding detection pin in the touch chip 204 via the first resistor 111.

[0084] Optionally, the first resistance 111, as a matching resistance of a touch channel 1 formed between the first pulley key pad 011 and a corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 1 and provide electrostatic protection for the touch channel 1, so as to improve the accuracy of the touch state signal collection of the first pulley key pad 011.

[0085] The second pulley key pad 012 is connected to a corresponding detection pin in the touch chip 204 via a second resistance 121.

[0086] Optionally, the second resistance 121, as a matching resistance of a touch channel 2 formed between the second pulley key pad 012 and a corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 2 and provide electrostatic protection for the touch channel 2, so as to improve the accuracy of the touch state signal collection of the second pulley key pad 012.

[0087] The third pulley key pad 013 is connected to a corresponding detection pin in the touch chip 204 via a third resistance 131.

[0088] Optionally, the third resistance 131, as a matching resistance of a touch channel 3 formed between the third pulley key pad 013 and a corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 3 and provide electrostatic protection for the touch channel 3, so as to improve the accuracy of the touch state signal collection of the third pulley key pad 013.

[0089] The fourth pulley key pad 014 is connected to a corresponding detection pin in the touch chip 204 via a fourth resistance 141.

[0090] Optionally, the fourth resistance 141, as a matching resistance of a touch channel 4 formed between the fourth pulley key pad 014 and a corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 4 and provide electrostatic protection for the touch channel 4, so as to improve the accuracy of the touch state signal collection of the fourth pulley key pad 014.

[0091] Figure 5 A structural schematic diagram of a slide bar module provided in the present application is shown in FIG. 2. Figure 5 The slide bar module 202 in the touch circuit 20 provided in the embodiments of the present application includes a first slide bar key pad 021, a second slide bar key pad 022, and a third slide bar key pad 023.

[0092] The first slide bar key pad 021, the second slide bar key pad 022, and the third slide bar key pad 023 are arranged in a strip shape on the printed circuit board 30 in sequence.

[0093] Optionally, the first slide key pad 021, the second slide key pad 022 and the third slide key pad 023 can be realized by printed copper foils on the printed circuit board 30, and the printed copper foils corresponding to the first slide key pad 021, the second slide key pad 022 and the third slide key pad 023 are distributed in a strip shape on the printed circuit board from top to bottom or from left to right.

[0094] Optionally, the printed copper foils corresponding to the first slide key pad 021, the second slide key pad 022 and the third slide key pad 023 form a strip copper foil on the printed circuit board, which is the slide module 202.

[0095] The touch chip 204 obtains the touch states of the first slide key pad 021, the second slide key pad 022 and the third slide key pad 023 based on the detection pins, and generates corresponding dimming control instructions according to the touch states of the first slide key pad 021, the second slide key pad 022 and the third slide key pad 023, and sends the dimming control instructions to the controlled device.

[0096] Optionally, the touch chip 204 obtains the self-induction capacitance value of the first slide key pad 021 through the detection pin connected to the printed copper foil corresponding to the first slide key pad 021, obtains the self-induction capacitance value of the second slide key pad 022 through the detection pin connected to the printed copper foil corresponding to the second slide key pad 022, and obtains the self-induction capacitance value of the third slide key pad 023 through the detection pin connected to the printed copper foil corresponding to the third slide key pad 023.

[0097] Optionally, the dimming control instruction is used to indicate a control signal for controlling the display brightness of the controlled device, and the touch chip 204 generates corresponding dimming control instructions according to the touch states of the first slide key pad 021, the second slide key pad 022 and the third slide key pad 023 in the slide module 202. Although the slide module 202 is used to control the brightness of the controlled device, the brightness values indicated by the keys corresponding to the slide key pads in the slide module 202 are different.

[0098] In an optional embodiment, referring to Figure 5 The slide module 202 in the touch circuit 20 provided by the embodiment of the present application further includes a fifth resistor 211, a sixth resistor 221 and a seventh resistor 231.

[0099] The first slide key pad 021 is connected to the corresponding detection pin in the touch chip 204 via the fifth resistor 211.

[0100] Optionally, the fifth resistor 211, as a matching resistor of the touch channel 5 formed between the first slide key pad 021 and the corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 5 and provide electrostatic protection for the touch channel 5, so as to improve the accuracy of the touch state signal collection of the first slide key pad 021.

[0101] The second slide key pad 022 is connected to the corresponding detection pin in the touch chip 204 via the sixth resistor 221.

[0102] Optionally, the sixth resistor 221, as a matching resistor of the touch channel 6 formed between the second slide key pad 0221 and the corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 6 and provide electrostatic protection for the touch channel 6, so as to improve the accuracy of the touch state signal collection of the second slide key pad 022.

[0103] The third slide key pad 023 is connected to the corresponding detection pin in the touch chip 204 via the seventh resistor 231.

[0104] Optionally, the seventh resistor 231, as a matching resistor of the touch channel 7 formed between the third slide key pad 023 and the corresponding detection pin of the touch chip 204, can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel 7 and provide electrostatic protection for the touch channel 7, so as to improve the accuracy of the touch state signal collection of the third slide key pad 023.

[0105] Figure 6 A structure schematic diagram of a touch chip provided by the present application is shown in FIG. 4. Figure 6 The touch chip 204 provided by the embodiments of the present application has 18 detection pins, wherein WHEEL1, WHEEL2, WHEEL3 and WHEEL4 are the detection pins corresponding to the connection of the pulley key pads in the pulley module 201, SOLID1, SOLID2 and SOLID3 are the detection pins corresponding to the connection of the slide key pads in the slide module 202; KEY1, KEY2, KEY3, KEY4, KEY5, KEY6, KEY7, KEY8, KEY9, KEY10 and KEY11 are the detection pins corresponding to the connection of the independent key pads, and VDD is used for indicating the power input pin of the touch chip. In addition, the LED port is used for connecting the indicator light on the intelligent remote controller, and when the user presses the key on the intelligent remote controller to send a control instruction to the controlled device, the indicator light will be lit to indicate that the control instruction is sent successfully.

[0106] Figure 7 A connection schematic diagram of an independent key pad and a touch chip provided by the present application is shown in FIG. 5. Figure 7The touch circuit 20 provided by the embodiment of the present application further comprises a plurality of resistors.

[0107] Each independent key pad 203 is connected with a corresponding detection pin in the touch chip 204 via a resistor, and the independent key pad 203 and the resistor are in one-to-one correspondence.

[0108] Optionally, the resistor in the touch channel formed by the connection of each independent key pad 203 and the corresponding detection pin in the touch chip 204 is the matching resistance of the touch channel, which can effectively reduce the radio frequency interference of the radio frequency signal on the touch channel and provide electrostatic protection, so as to improve the accuracy of the touch state signal collection of each independent key pad 203.

[0109] Figure 8 A structural schematic diagram of a filter module provided by the present application is shown in FIG. 5. Figure 8 The touch circuit 20 provided by the embodiment of the present application further comprises a filter module 205, and the touch chip 204 further comprises a power input pin.

[0110] One end of the filter module 205 is connected with the power input pin of the touch chip 204, and the other end of the filter module 205 is grounded.

[0111] Optionally, the filter module 205 is connected with the power input pin of the touch chip 204, and the filter module 205 is mainly used for decoupling filtering of the power input pin of the touch chip 204.

[0112] In an optional embodiment, a structural schematic diagram of a filter module provided by the present application is shown in FIG. 5. Figure 7 The filter module 205 in the touch circuit 20 provided by the embodiment of the present application comprises a first capacitor 51, a second capacitor 52 and a third capacitor 53.

[0113] One end of the first capacitor 51, one end of the second capacitor 52 and one end of the third capacitor 53 are connected with the power input pin of the touch chip, and the other end of the first capacitor 51, the other end of the second capacitor 52 and the other end of the third capacitor 53 are grounded.

[0114] Optionally, the first capacitor 51, the second capacitor 52 and the third capacitor 53 are connected in parallel with the power input pin of the touch chip 204, and collectively load the decoupling filtering of the power input pin of the touch chip 204.

[0115] Figure 9 A structural schematic diagram of a protection module provided by the present application is shown in FIG. 6. Figure 9 The touch circuit 20 provided by the embodiment of the present application further comprises a protection module 206, and the touch chip 206 further comprises a driving pin.

[0116] One end of the protection module 206 is connected with the driving pin of the touch chip 204, and the other end of the protection module 206 is grounded.

[0117] Optionally, the driving pin of the touch chip 204 is grounded via the protection module 206, and the protection module 206 can effectively ensure the normal operation of the touch circuit 20.

[0118] In an optional embodiment, referring to Figure 8 The protection module 206 in the touch circuit 20 provided by the embodiment of the present application comprises a fourth capacitor 61.

[0119] One end of the fourth capacitor 61 is connected with the driving pin of the touch chip 204, and the other end of the fourth capacitor 61 is grounded.

[0120] Optionally, the fourth capacitor 61 functions as a charge and discharge capacitor of the touch circuit 20, and can effectively discharge the excess charge of the touch circuit 20, thereby ensuring the safe operation of the touch circuit 20.

[0121] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, and all of them should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0122] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A touch circuit, comprising: The touch control circuit comprises a pulley module, a slide strip module, a plurality of independent key pads and a touch control chip, a plurality of detection pins are arranged on the touch control chip, a plurality of pulley key pads are arranged in the pulley module, a plurality of slide strip key pads are arranged in the slide strip module, and each pulley key pad, each slide strip key pad and each independent key pad are arranged on a printed circuit board; Each pulley key pad in the pulley module is connected to a detection pin in the touch control chip, each slide strip key pad in the slide strip module is connected to a detection pin in the touch control chip, each independent key pad is connected to a detection pin in the touch control chip, and the detection pins connected by each pulley key pad, each slide strip key pad and each independent key pad are different; The touch control chip obtains the touch states of each pulley key pad, each slide strip key pad and each independent key pad based on each detection pin, generates control instructions corresponding to each pulley key pad, each slide strip key pad and each independent key pad according to the touch states, and sends the control instructions to a controlled device.

2. The touch circuit of claim 1, wherein, The plurality of pulley key pads comprise a first pulley key pad, a second pulley key pad, a third pulley key pad and a fourth pulley key pad; The first pulley key pad, the second pulley key pad, the third pulley key pad and the fourth pulley key pad are arranged in a ring shape on the printed circuit board in sequence; The touch control chip obtains the touch states of the first pulley key pad, the second pulley key pad, the third pulley key pad and the fourth pulley key pad based on each detection pin, generates corresponding color control instructions according to the touch states of the first pulley key pad, the second pulley key pad, the third pulley key pad and the fourth pulley key pad, and sends the color control instructions to a controlled device.

3. The touch circuit of claim 2, wherein, The pulley module further comprises a first resistor, a second resistor, a third resistor and a fourth resistor; The first pulley key pad is connected to a corresponding detection pin in the touch control chip via the first resistor; The second pulley key pad is connected to a corresponding detection pin in the touch control chip via the second resistor; The third pulley key pad is connected to a corresponding detection pin in the touch control chip via the third resistor; The fourth pulley key pad is connected to a corresponding detection pin in the touch control chip via the fourth resistor.

4. The touch circuit of claim 1, wherein, The slide strip module comprises a first slide strip key pad, a second slide strip key pad and a third slide strip key pad; The first slide strip key pad, the second slide strip key pad and the third slide strip key pad are arranged in a strip shape on the printed circuit board in sequence; The touch chip acquires the touch states of the first slide bar key pad, the second slide bar key pad and the third slide bar key pad based on the detection pins, and generates corresponding dimming control instructions according to the touch states of the first slide bar key pad, the second slide bar key pad and the third slide bar key pad, and sends the instructions to the controlled device.

5. The touch circuit of claim 4, wherein, The slide bar module further comprises a fifth resistor, a sixth resistor and a seventh resistor. The first slide bar key pad is connected to the corresponding detection pin in the touch chip via the fifth resistor. The second slide bar key pad is connected to the corresponding detection pin in the touch chip via the sixth resistor. The third slide bar key pad is connected to the corresponding detection pin in the touch chip via the seventh resistor.

6. The touch circuit of claim 1, wherein, The touch circuit further comprises a plurality of resistors. Each of the independent key pads is connected to the corresponding detection pin in the touch chip via the resistor, and the independent key pad and the resistor are in one-to-one correspondence.

7. The touch circuit of claim 1, wherein, The touch circuit further comprises a filter module, and the touch chip further comprises a power input pin. One end of the filter module is connected to the power input pin of the touch chip, and the other end of the filter module is grounded.

8. The touch circuit of claim 7, wherein, The filter module comprises a first capacitor, a second capacitor and a third capacitor. One end of the first capacitor, one end of the second capacitor and one end of the third capacitor are connected to the power input pin of the touch chip, and the other end of the first capacitor, the other end of the second capacitor and the other end of the third capacitor are grounded.

9. The touch circuit of claim 1, wherein, The touch circuit further comprises a protection module, and the touch chip further comprises a driving pin. One end of the protection module is connected to the driving pin of the touch chip, and the other end of the protection module is grounded.

10. The touch circuit of claim 9, wherein, The protection module comprises a fourth capacitor. One end of the fourth capacitor is connected to the driving pin of the touch chip, and the other end of the fourth capacitor is grounded.

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