Touch keyboard control circuit and touch keyboard

Abstract

The invention discloses a touch keyboard control circuit and a touch keyboard. The touch keyboard control circuit comprises a main controller; the key touch detection circuit is connected with the main controller, and the key touch detection circuit is used for outputting a key trigger signal to the main controller when being triggered by a user; the key touch detection circuit is also used for detecting a key pressure value and outputting a pressure signal to the main controller; and the main controller is used for outputting a corresponding key signal when receiving the key trigger signal and detecting that the key pressure value is greater than a preset trigger pressure value according to the pressure signal. The invention aims to solve the problem that the touch keyboard is easily triggered by mistake.

Description

Technical Field

[0001] The present invention relates to the field of touch keyboards, and in particular to a touch keyboard control circuit and a touch keyboard. Background Art

[0002] A touch keyboard, also called a virtual keyboard or soft keyboard, refers to a touch-sensitive keyboard layout displayed on the screen. When a user's finger touches a key, the charge of the finger affects the charge distribution on the conductive plate, thereby changing the capacitance value of the key. The state of the key, such as whether it is pressed or released, is determined by monitoring the change in this capacitance value. The system can sense the touch action and detect the change in capacitance value, and then compare this change with the stored reference value to determine the state of the key. Based on this status information, the system will perform the corresponding operation. The current disadvantage of touch keyboards is that it is easy to trigger by mistake when the hand is placed on the touch keyboard, causing the system or device to perform incorrect operations. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a touch keyboard control circuit and a touch keyboard to solve the problem that the touch keyboard is easily triggered by mistake.

[0004] The technical solution of the present invention is as follows:

[0005] A touch keyboard control circuit, the touch keyboard control circuit comprising:

[0006] Main controller;

[0007] A key touch detection circuit is connected to the main controller, and is used to output a key trigger signal to the main controller when triggered by a user; the key touch detection circuit is also used to detect a key pressure value and output a pressure signal to the main controller;

[0008] The main controller is used to output a corresponding key signal when receiving the key trigger signal and detecting according to the pressure signal that the key pressure value is greater than a preset trigger pressure value.

[0009] Optionally, the key touch detection circuit includes:

[0010] A plurality of touch buttons, used for outputting touch trigger signals when triggered by a user;

[0011] A touch control chip is connected to the plurality of touch buttons and also connected to the main controller. The touch control chip is used to output a corresponding button trigger signal to the main controller according to the touch trigger signal.

[0012] Optionally, the key touch detection circuit further includes:

[0013] A pressure sensing circuit is connected to the main controller, and is used to detect pressure values ​​of the plurality of touch keys and output pressure signals to the main controller.

[0014] Optionally, the touch keyboard control circuit further includes:

[0015] A power supply circuit is connected to the main controller, and the power supply circuit is used to provide an operating voltage to the main controller.

[0016] Optionally, the touch keyboard control circuit further includes:

[0017] A communication control circuit is communicatively connected to the main controller, the communication is used to communicate with an external device, the communication control circuit is used to receive a wireless control signal output by the external device and output it to the main controller, and the main controller is used to output a corresponding key signal according to the wireless control signal output by the communication control circuit.

[0018] Optionally, the touch keyboard control circuit further includes:

[0019] A display screen is connected to the communication control circuit, and the communication control circuit is also used to control the operation of the display screen when outputting a wireless control signal to the main controller.

[0020] Optionally, the touch keyboard control circuit includes:

[0021] A sleep detection switch is connected to the main controller and the communication control circuit respectively. The sleep detection switch is used to touch the sleep state of the keyboard and output a sleep detection signal to the main controller and the communication control circuit.

[0022] Optionally, the touch keyboard control circuit further includes:

[0023] The keyboard light circuit is connected to the main controller, and the main controller is used to control the keyboard light circuit to work when outputting a key signal.

[0024] Optionally, the touch keyboard control circuit includes:

[0025] The vibration motor circuit is connected to the main controller, and the main controller is used to control the vibration motor circuit to work when outputting a key signal.

[0026] The present invention further provides a touch keyboard, comprising the touch keyboard control circuit as described above.

[0027] The technical solution of the present invention forms a touch keyboard control circuit through a main controller and a key touch detection circuit, wherein the key touch detection circuit is connected to the main controller, and the key touch detection circuit is used to output a key trigger signal to the main controller when triggered by a user; the key touch detection circuit is also used to detect the key pressure value and output a pressure signal to the main controller; the main controller is used to output a corresponding key signal when receiving the key trigger signal and detecting that the key pressure value is greater than a preset trigger pressure value according to the pressure signal. In this way, by detecting the size of the key pressure value, it can be determined whether the user has touched the key by mistake, and the key signal is output only when the key pressure value is greater than the preset trigger pressure value, thereby avoiding the touch keyboard from being triggered by mistake, and solving the problem that the touch keyboard is easily triggered by mistake. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 It is a functional module diagram of an embodiment of a touch keyboard control circuit of the present invention.

[0030] Figure 2 It is a functional module diagram of another embodiment of the touch keyboard control circuit of the present invention.

[0031] Figure 3 It is a circuit structure diagram of an embodiment of a main controller in a touch keyboard control circuit of the present invention.

[0032] Figure 4 It is a circuit structure diagram of an embodiment of a touch control chip in a touch keyboard control circuit of the present invention.

[0033] Figure 5 It is a circuit structure diagram of an embodiment of a communication control circuit in a touch keyboard control circuit of the present invention.

[0034] Figure 6 It is a circuit structure diagram of an embodiment of a keyboard light circuit in a touch keyboard control circuit of the present invention.

[0035] Figure 7 It is a circuit structure diagram of an embodiment of a vibration motor circuit in a touch keyboard control circuit of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] In the embodiments and the scope of the patent application, unless the text specifically defines the article, "a", "an", "the" and "the" may also include plural forms. If there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0038] It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when an element is said to be "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can also be intermediate elements. In addition, the "connection" or "coupling" used herein can include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0039] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0040] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] A touch keyboard, also called a virtual keyboard or soft keyboard, refers to a touch-sensitive keyboard layout displayed on the screen. When a user's finger touches a key, the charge of the finger affects the charge distribution on the conductive plate, thereby changing the capacitance value of the key. The state of the key, such as whether it is pressed or released, is determined by monitoring the change in this capacitance value. The system can sense the touch action and detect the change in capacitance value, and then compare this change with the stored reference value to determine the state of the key. Based on this status information, the system will perform the corresponding operation. The current disadvantage of touch keyboards is that it is easy to trigger by mistake when the hand is placed on the touch keyboard, causing the system or device to perform incorrect operations.

[0042] In order to solve the above problem, the present invention provides a touch keyboard control circuit.

[0043] Reference Figure 1 In one embodiment, the touch keyboard control circuit includes:

[0044] Main controller 10;

[0045] A key touch detection circuit 20 is connected to the main controller 10. The key touch detection circuit 20 is used to output a key trigger signal to the main controller 10 when triggered by a user. The key touch detection circuit 20 is also used to detect a key pressure value and output a pressure signal to the main controller 10.

[0046] The main controller 10 is used to output a corresponding key signal when receiving the key trigger signal and detecting, according to the pressure signal, that the key pressure value is greater than a preset trigger pressure value.

[0047] In this embodiment, the main controller 10 can be a digital signal processor (Digital Signal Processor, referred to as DSP), a programmable logic device (Programmable Logic Device, referred to as PLD), a field programmable gate array (Field Programmable Gate Array, referred to as FPGA), a microprocessor, an MCU microcontroller or other electronic components; the specific circuit structure of the main controller 10 can refer to Figure 3. Touch detection refers to the process of detecting whether an object is in contact with or close to a touch sensor. Touch detection usually requires the use of a dedicated touch sensor chip and related circuits. These chips usually have an analog input port that can receive the output signal of the touch sensor and determine whether a touch event has occurred through internal algorithms and logic. For the keys on the touch keyboard, the user's touch behavior on the touch key can be identified by sensor technology; for example, capacitive touch detection: the touch is identified by detecting the electric field that changes when the finger touches. The capacitive touch screen is usually composed of multiple electrodes. When the finger approaches, the capacitance value of the electrode changes, and the main controller 10 can determine the touch position through these changes. Or touch detection can be performed by means of resistive touch detection, infrared touch detection, acoustic wave touch detection, and optical touch detection. Therefore, it can be determined whether the user touches the key through sensor technology. For example, when the user touches the key, a high-level electrical signal, that is, a key trigger signal is output to the main controller 10; when the user does not touch the key, a low-level electrical signal is output to the main controller 10.

[0048] Furthermore, in order to prevent users from accidentally triggering the keys on the touch keyboard, the keys can also be pressure-detected, such as by using a pressure sensor or a piezoelectric element to detect the key pressure value on the touch keyboard. Common pressure sensors include resistive, capacitive, piezoelectric, etc. When pressure acts on the sensor, the sensor will physically deform, causing the parameters of the resistance, capacitance or piezoelectric material to change. These changes can be detected and processed to obtain electrical signals related to the pressure. The electrical signal output by the sensor can be amplified, filtered, linearized, etc. through the signal conditioning circuit to improve the quality and accuracy of the signal. The processed signal is then converted into a form suitable for subsequent processing or display, such as an analog voltage signal, a digital signal, or a wireless signal, etc. through the output circuit. In this way, the pressure value of each key on the touch keyboard can be detected in this embodiment, and the corresponding pressure signal can be output to the main controller 10. When the main controller 10 detects that the key pressure value is greater than the preset trigger pressure value according to the pressure signal, it means that the user's finger presses on the key of the touch keyboard with a certain force, and it is not an accidental trigger of the keyboard. At this time, the main controller 10 can output the corresponding key signal to the subsequent circuit to perform the corresponding operation; the preset trigger pressure value can be set according to the actual application and user needs. In this way, the touch detection and pressure value detection of the key are combined in this scheme, so as to avoid the occurrence of false triggering of the key.

[0049] The technical solution of the present invention forms a touch keyboard control circuit through a main controller 10 and a key touch detection circuit 20, wherein the key touch detection circuit 20 is connected to the main controller 10, and the key touch detection circuit 20 is used to output a key trigger signal to the main controller 10 when triggered by the user; the key touch detection circuit 20 is also used to detect the key pressure value and output a pressure signal to the main controller 10; the main controller 10 is used to output a corresponding key signal when receiving the key trigger signal and detecting that the key pressure value is greater than the preset trigger pressure value according to the pressure signal. In this way, by detecting the size of the key pressure value, it can be determined whether the user has touched the key by mistake, and the key signal is output only when the key pressure value is greater than the preset trigger pressure value, thereby avoiding the touch keyboard from being triggered by mistake, and solving the problem that the touch keyboard is easily triggered by mistake.

[0050] Reference Figure 2 In one embodiment, the key touch detection circuit 20 includes:

[0051] A plurality of touch buttons 21, used to output a touch trigger signal when triggered by a user;

[0052] The touch control chip 22 is connected to the plurality of touch buttons 21 and is also connected to the main controller 10 . The touch control chip 22 is used for outputting corresponding button trigger signals to the main controller 10 according to the touch trigger signals.

[0053] In this embodiment, the key touch detection circuit 20 can be composed of a plurality of touch keys 21 and a touch control chip 22. The number of touch keys 21 can be set according to the actual application and user needs, and is not limited here. The touch key 21 can be implemented by a touch sensor, such as a capacitive sensor, which can sense touch by detecting changes in capacitance. The touch control chip 22 is an integrated circuit for processing touch input signals. The touch control chip 22 can convert the signal detected by the touch sensor into a digital signal and perform corresponding processing. The main functions of the touch control chip 22 include: Signal acquisition: real-time acquisition of analog signals from the touch sensor. Signal processing: filtering, amplifying and digitizing the collected signals to improve the accuracy and sensitivity of touch detection. Touch detection algorithm: realizing touch detection, sliding gesture recognition, multi-touch and other functions. Interface: communicating with the main controller 10, usually through interfaces such as I2C, SPI or UART. The specific circuit structure of the touch control chip 22 can be referred to. Figure 4 In this way, the key touch detection circuit 20 in this embodiment can realize touch detection for the touch key 21 on the touch keyboard.

[0054] Further, refer to Figure 2 In one embodiment, the key touch detection circuit 20 further includes:

[0055] The pressure sensing circuit 23 is connected to the main controller 10 , and is used to detect the pressure values ​​of the touch buttons 21 and output pressure signals to the main controller 10 .

[0056] In this embodiment, the pressure sensing circuit 23 in the key touch detection circuit 20 is an electronic circuit that can detect and respond to pressure changes, and specifically can include: a resistance strain gauge, which is a pressure sensitive element made of metal or semiconductor material and has good mechanical and electrical properties. When the strain gauge is subjected to pressure, its length and width will change slightly, resulting in a corresponding change in resistance value. This change can be detected by the circuit. Connection method: The strain gauge is often connected to the circuit in a bridge connection, which can improve sensitivity and eliminate the influence of temperature on resistance. Amplification circuit: Since the resistance change generated by the strain gauge is very small, an amplifier is required to enhance the signal. Common amplifier types include operational amplifiers, which can amplify weak voltage signals to a large enough amplitude for subsequent processing. Filter circuit: In order to reduce noise interference, filters are usually added to the circuit, such as low-pass filters, which only allow low-frequency signals to pass and attenuate high-frequency noise. A / D converter: If you want to convert an analog signal into a digital signal for further processing or storage, you need to use an A / D converter. It can convert a continuous analog voltage signal into a discrete digital signal and output it to the main controller 10. In this way, the pressure sensing circuit 23 in this embodiment can detect the pressure values ​​of the plurality of touch buttons 21 and output pressure signals to the main controller 10 .

[0057] Reference Figure 1 In one embodiment, the touch keyboard control circuit further includes:

[0058] The power supply circuit 30 is connected to the main controller 10 , and is used to provide a working voltage to the main controller 10 .

[0059] In this embodiment, the power circuit 30 can be implemented by a DC-DC circuit or a power chip. The power circuit 30 can convert the external power supply voltage or the battery voltage into a working voltage suitable for the main controller 10, so as to prevent the main controller 10 from receiving a higher working voltage and causing device damage, or receiving a lower working voltage and causing the device to fail to work properly; the power circuit 30 can also provide working voltage to peripheral circuits and peripheral devices. A linear regulator (Low Dropout Regulator, referred to as LDO) can also be set in the power circuit 30, which can reduce the input voltage to the required output voltage while maintaining a low voltage drop.

[0060] Reference Figure 1 In one embodiment, the touch keyboard control circuit further includes:

[0061] The communication control circuit 40 is connected to the main controller 10 for communication, and the communication is used to connect to an external device for communication. The communication control circuit 40 is used to receive a wireless control signal output by the external device and output it to the main controller 10. The main controller 10 is used to output a corresponding key signal according to the wireless control signal output by the communication control circuit 40.

[0062] In this embodiment, the communication control circuit 40 can be a microcontroller (Bluetooth Low Energy Microcontroller Unit, BLE MCU for short) with integrated Bluetooth low energy function. The main features and advantages of BLE MCU are: Low power consumption: BLE technology has low power consumption when transmitting data, which is suitable for battery-powered devices and can extend the battery life of the device. Short-range communication: BLE is suitable for short-range data transmission. For example, in applications such as smart homes, health monitoring, wireless sensor networks, etc., devices can communicate efficiently. Low complexity: BLE MCU is relatively simple and easy to develop and integrate into various devices, reducing the complexity of system design. In addition to BLE, many BLE MCUs also support other wireless communication protocols, such as Wi-Fi, Zigbee, etc., providing greater flexibility. The specific circuit structure of the communication control circuit 40 can refer to Figure 5 Therefore, the communication control circuit 40 in this embodiment can receive the wireless control signal output by the external device and output it to the main controller 10. The main controller 10 can output the corresponding key signal to the subsequent circuit according to the wireless control signal output by the communication control circuit 40, so that the subsequent circuit performs the corresponding operation. In this way, the user does not need to touch the keys of the touch keyboard, but can directly control through external devices such as mobile phones or Bluetooth.

[0063] Reference Figure 1 In one embodiment, the touch keyboard control circuit further includes:

[0064] The display screen 50 is connected to the communication control circuit 40 , and the communication control circuit 40 is also used to control the operation of the display screen 50 when outputting a wireless control signal to the main controller 10 .

[0065] In this embodiment, the display screen 50 is a device for visually displaying information, which can convert electronic signals into visible images, text or graphics. In this embodiment, a display screen 50 of a type such as a liquid crystal display screen, a light emitting diode display screen or an organic light emitting diode display screen can be used, and the specific selection can be made according to the actual situation and user needs. When the communication control circuit 40 outputs a wireless control signal to the main controller 10, it controls the display screen 50 to work, so that the display screen 50 can realize the corresponding key information; for example, when the touch button 21 corresponds to the A, B, C and other buttons, the corresponding A, B, C image information can be displayed on the display screen 50 when the corresponding button is triggered, so that the user can know whether the triggered button is correct.

[0066] Reference Figure 1 In one embodiment, the touch keyboard control circuit includes:

[0067] The sleep detection switch 60 is connected to the main controller 10 and the communication control circuit 40 respectively. The sleep detection switch 60 is used to touch the sleep state of the keyboard and output a sleep detection signal to the main controller 10 and the communication control circuit 40 .

[0068] In this embodiment, the touch keyboard can be a foldable touch keyboard; when the foldable touch keyboard is in a folded and retracted state, it enters a dormant state; when the foldable touch keyboard is in an unfolded state, it enters a working state; specifically, a Hall sensor or other sensor can be set at both ends of the foldable touch keyboard to detect the distance between the two ends of the foldable touch keyboard. When the foldable touch keyboard is folded, the distance between the two ends is the smallest. At this time, it can be determined that it needs to enter a dormant state, and the dormancy detection switch 60 outputs a high-level dormancy detection signal to the main controller 10 and the communication control circuit 40, so that the main controller 10 controls the touch keyboard to enter a dormant state, and the communication control circuit 40 controls the display screen 50 to display dormancy information; if the foldable touch keyboard is unfolded, the distance between the two ends becomes larger, and the dormancy detection switch 60 outputs a low-level dormancy detection signal to the main controller 10 and the communication control circuit 40, so that the main controller 10 controls the touch keyboard to enter a working state, and the communication control circuit 40 controls the display screen 50 to display working information. In the dormant state, the power consumption of the keyboard will be reduced, thereby extending the battery life.

[0069] Reference Figure 1 In one embodiment, the touch keyboard control circuit further includes:

[0070] The keyboard light circuit 70 is connected to the main controller 10, and the main controller 10 is used to control the keyboard light circuit 70 to work when outputting a key signal.

[0071] In this embodiment, the keyboard light circuit 70 can be composed of multiple keyboard lights and control chips as well as electronic components such as capacitors and resistors. The keyboard light can be an LED light or other lamps. Multiple LED lights can correspond to multiple key settings on the touch keyboard. When the user triggers a key, the main controller 10 will output a key signal. At this time, the main controller 10 will also control the keyboard light circuit 70 to work so that the LED light of the corresponding key lights up, which can serve as a prompt. Or the keyboard light can also serve as a backlight, so that the user can see the key position more easily in a dark environment. The specific circuit structure of the keyboard light circuit 70 can be referred to Figure 6 .

[0072] Reference Figure 1 In one embodiment, the touch keyboard control circuit includes:

[0073] The vibration motor circuit 80 is connected to the main controller 10 , and the main controller 10 is used to control the vibration motor circuit 80 to work when outputting a key signal.

[0074] In this embodiment, the vibration motor circuit 80 can be composed of electronic components such as a vibration control chip, capacitors and resistors. The vibration motor circuit 80 can be used to provide tactile feedback to enhance the user experience. When the user inputs on the touch keyboard, the vibration motor will generate slight vibrations when the key is touched or pressed. This feedback can help users confirm their input, especially in the absence of physical keys. The vibration motor circuit 80 can activate a small motor through electric current, which drives an unbalanced rotating part to generate vibrations. The intensity and duration of the vibration can be adjusted according to design requirements to suit the preferences of different users. In touch devices, vibration feedback can not only improve the accuracy of input, but also increase the interactivity of the device. The specific circuit structure of the vibration motor circuit 80 can be referred to. Figure 7 .

[0075] The invention also provides a touch keyboard.

[0076] In one embodiment, the touch keyboard includes the touch keyboard control circuit as described above. It is understandable that, since the touch keyboard control circuit is used in the touch keyboard of the present invention, the embodiment of the touch keyboard of the present invention includes all technical solutions of all embodiments of the touch keyboard control circuit, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0077] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A touch keyboard control circuit, characterized in that: The touch keyboard control circuit comprises: Main controller; A key touch detection circuit is connected to the main controller, and is used to output a key trigger signal to the main controller when triggered by a user; the key touch detection circuit is also used to detect a key pressure value and output a pressure signal to the main controller; The main controller is used to output a corresponding key signal when receiving the key trigger signal and detecting according to the pressure signal that the key pressure value is greater than a preset trigger pressure value.

2. The touch keyboard control circuit according to claim 1, characterized in that: The key touch detection circuit comprises: A plurality of touch buttons, used for outputting touch trigger signals when triggered by a user; A touch control chip is connected to the plurality of touch buttons and also connected to the main controller. The touch control chip is used to output a corresponding button trigger signal to the main controller according to the touch trigger signal.

3. The touch keyboard control circuit according to claim 2, characterized in that: The key touch detection circuit also includes: A pressure sensing circuit is connected to the main controller, and is used to detect pressure values ​​of the plurality of touch keys and output pressure signals to the main controller.

4. The touch keyboard control circuit according to claim 1, wherein: The touch keyboard control circuit also includes: A power supply circuit is connected to the main controller, and the power supply circuit is used to provide an operating voltage to the main controller.

5. The touch keyboard control circuit according to claim 1, characterized in that: The touch keyboard control circuit also includes: A communication control circuit is communicatively connected to the main controller, the communication is used to communicate with an external device, the communication control circuit is used to receive a wireless control signal output by the external device and output it to the main controller, and the main controller is used to output a corresponding key signal according to the wireless control signal output by the communication control circuit.

6. The touch keyboard control circuit according to claim 5, characterized in that: The touch keyboard control circuit also includes: A display screen is connected to the communication control circuit, and the communication control circuit is also used to control the operation of the display screen when outputting a wireless control signal to the main controller.

7. The touch keyboard control circuit according to claim 5, characterized in that: The touch keyboard control circuit comprises: A sleep detection switch is connected to the main controller and the communication control circuit respectively. The sleep detection switch is used to touch the sleep state of the keyboard and output a sleep detection signal to the main controller and the communication control circuit.

8. The touch keyboard control circuit according to claim 1, wherein: The touch keyboard control circuit also includes: The keyboard light circuit is connected to the main controller, and the main controller is used to control the keyboard light circuit to work when outputting a key signal.

9. The touch keyboard control circuit according to claim 1, wherein: The touch keyboard control circuit comprises: The vibration motor circuit is connected to the main controller, and the main controller is used to control the vibration motor circuit to work when outputting a key signal.

10. A touch keyboard, characterized in that: It comprises the touch keyboard control circuit as claimed in any one of claims 1 to 9.

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