Infrared touch interaction panel

Abstract

The utility model discloses an infrared touch interaction panel which comprises a touch frame circuit board, an infrared emitter, an infrared receiver and an infrared pyroelectric sensor, the infrared emitter, the infrared receiver and the infrared pyroelectric sensor are arranged on the touch frame circuit board, and the infrared pyroelectric sensor is electrically connected with the touch frame circuit board. The infrared pyroelectric sensor is electrically connected with the control unit by sending a startup signal to the control unit electrically connected with the touch frame circuit board through the touch frame circuit board, and startup control can be carried out on the infrared touch interaction panel through an induction signal received by the infrared pyroelectric sensor; therefore, when a user moves to a certain range near the infrared touch interaction panel, the user can automatically enter a screen-on and power-on state from a standby state, the use is more intelligent, and the operation is more convenient; meanwhile, the infrared pyroelectric sensor is directly and electrically connected to the touch frame circuit board, so that the product layout is more reasonable, the integration degree is higher, wiring operation is reduced, and meanwhile the wire cost is saved.

Description

Technical Field

[0001] The present application relates to the field of infrared touch electronic devices, and in particular to an infrared touch interactive tablet. Background Art

[0002] An interactive tablet is a large display screen that can be operated by touch. It is mostly used in public places such as conference rooms and classrooms. Since the use environment is relatively open and the users are not fixed, the interactive tablet needs to be frequently turned on and off. Due to the different usage habits of different users and the lack of dedicated personnel to manage the interactive tablet, it often happens that the interactive tablet is not turned off after use. Therefore, the interactive tablet used in public places usually has a function that automatically switches to standby mode after a preset period of inactivity. However, traditional interactive tablets need to be actively operated by humans to be turned on and awakened in standby mode. Active operation requires the operator to touch a specific position on the interactive tablet, which has great operational limitations. On the other hand, it needs to be turned on every time a user arrives, which leads to poor user experience.

[0003] Based on the above situation, infrared pyroelectric sensors can be used on the infrared touch interactive tablet for human body sensing. When the infrared pyroelectric sensor senses that the human body is within a certain range, the power operation can be performed. However, the infrared pyroelectric sensor needs to be connected to the control unit through a connecting wire, which increases the circuit layout inside the infrared touch interactive tablet, resulting in a complex structure of the infrared touch interactive tablet, increased wire usage, and increased product costs. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide an infrared touch interactive tablet that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] On the one hand, an infrared touch interactive tablet is provided, comprising a touch frame circuit board, an infrared transmitter, an infrared receiver and an infrared pyroelectric sensor arranged on the touch frame circuit board, wherein the infrared pyroelectric sensor is electrically connected to the touch frame circuit board and can send a power-on signal to a control unit electrically connected to the touch frame circuit board through the touch frame circuit board.

[0007] In this solution, an infrared pyroelectric sensor is electrically connected to the control unit, and the infrared touch interactive tablet can be turned on by the sensing signal received by the infrared pyroelectric sensor, so that when the user moves to a certain range near the infrared touch interactive tablet, it can automatically enter the screen-on state from the standby state, which is smarter to use and more convenient to operate. At the same time, by directly electrically connecting the infrared pyroelectric sensor to the touch frame circuit board, the space on the touch frame circuit board can be fully utilized for wiring and setting contacts, making the product layout more reasonable and more integrated, eliminating the wires connecting the infrared pyroelectric sensor and the control unit, reducing wiring operations and saving wire costs.

[0008] The infrared touch interactive tablet described in the embodiment of the present application includes an upper frame and a lower frame, and touch frame circuit boards are respectively arranged in the upper frame and the lower frame.

[0009] Optionally, the infrared touch interactive tablet further includes a physical switch, which is electrically connected to the touch frame circuit board and can send a power-on signal to a control unit electrically connected to the touch frame circuit board through the touch frame circuit board.

[0010] This solution also includes a physical switch, which can be used to turn on the infrared touch interactive tablet by controlling the physical switch. The physical switch is electrically connected to the control unit through the touch frame circuit board, which can also optimize the product layout, save connecting wires and reduce costs.

[0011] Optionally, the infrared touch interactive tablet also includes a two-choice selector, which is electrically connected to the touch frame circuit board and the control unit, and the infrared pyroelectric sensor and the physical switch are both electrically connected to the two-choice selector through the touch frame circuit board.

[0012] In this scheme, when the infrared pyroelectric sensor receives an infrared signal from the human body or the physical switch is controlled, the infrared touch interactive tablet can be switched from a standby state to a bright screen power-on state. The logical relationship between the two is a two-to-one relationship, that is, when either of the two reaches the trigger condition, the infrared touch interactive tablet can be controlled to switch from a standby state to a bright screen power-on state; the specific implementation method is that the infrared pyroelectric sensor and the physical switch are connected to the same two-to-one selector, and the control unit is electrically connected through the two-to-one selector to realize the corresponding function.

[0013] Optionally, the infrared touch interactive flat panel further includes light-sensitive lamp beads, and the light-sensitive lamp beads are electrically connected to the touch frame circuit board, and are electrically connected to the control unit through the touch frame circuit board.

[0014] Light-sensing lamp beads are used to sense ambient light and can adjust the display brightness of the display according to the brightness of the ambient light, so that users can get a better user experience.

[0015] Optionally, the touch frame circuit board includes a receiver circuit board provided with a receiver and a transmitter circuit board provided with a transmitter, and the infrared pyroelectric sensor is provided on the receiver circuit board or the transmitter circuit board.

[0016] Optionally, a physical key is also connected to the touch frame circuit board, and the physical key is electrically connected to the control unit through the touch frame circuit board.

[0017] Optionally, the infrared touch interactive tablet further includes a mounting frame, the touch frame circuit board is arranged in the mounting frame, the infrared pyroelectric sensor, the physical switch, the physical button and the light-sensing lamp beads are all embedded in the mounting frame and exposed at the mounting frame for easy operation control or sensing.

[0018] Optionally, the physical switch includes a mechanical structure and a pressure sensor, the mechanical structure is configured to trigger the pressure sensor, and the pressure sensor is electrically connected to the touch frame circuit board.

[0019] Optionally, a pressure sensor is further included, and the pressure sensor is connected to the infrared pyroelectric sensor and the touch frame circuit board.

[0020] Optionally, the infrared pyroelectric sensor is electrically connected to an ultrasonic transducer, and the pressure sensor is triggered by the ultrasonic transducer.

[0021] The beneficial effects of the present application are as follows: in the present solution, an infrared pyroelectric sensor is electrically connected to the control unit, and the infrared touch interactive tablet can be powered on by the sensing signal received by the infrared pyroelectric sensor, so that when the user moves to a certain range near the infrared touch interactive tablet, it can automatically switch from the standby state to the screen-on state, which is smarter to use and more convenient to operate; at the same time, by directly electrically connecting the infrared pyroelectric sensor to the touch frame circuit board, the space on the touch frame circuit board can be fully utilized for wiring and setting contacts, making the product layout more reasonable and more integrated, eliminating the need for wires connecting the infrared pyroelectric sensor and the control unit, reducing wiring operations and saving wire costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application is further described in detail below based on the drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of the infrared touch interactive tablet according to an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the structure of the touch frame circuit board of an embodiment of the present application;

[0025] Figure 3 This is a diagram of the infrared pyroelectric sensor control startup system in the embodiment of the present application;

[0026] Figure 4 This is a diagram of a power-on control system using an infrared pyroelectric sensor or a physical switch as an alternative in an embodiment of the present application;

[0027] Figure 5 This is another diagram of a power-on system in which an infrared pyroelectric sensor and a physical switch are used to select one of the two to control the power-on in the embodiment of the present application;

[0028] Figure 6 This is a system diagram of the infrared pyroelectric sensor described in an embodiment of the present application controlling the power on through a physical switch.

[0029] In the figure:

[0030] 100. Infrared touch interactive tablet; 101. Upper frame; 102. Lower frame; 103. Display screen; 200. Touch frame circuit board; 201. Infrared transmitter; 202. Infrared pyroelectric sensor; 203. Physical switch. DETAILED DESCRIPTION

[0031] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0032] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] An infrared touch interactive tablet is a touch display device that uses infrared technology to achieve touch control. This touch display device usually has an infrared transmitter and an infrared receiver. The infrared transmitter emits infrared rays to form an infrared network. When the infrared rays are touched or blocked by a touch object, the infrared signal received by the infrared receiver will decrease, thereby triggering a touch event, emitting infrared light, and the infrared receiver receives the reflected infrared light. The location of the touch point can be determined by calculating the position of the infrared signal blocked by the touch object. The infrared touch interactive tablet has the characteristics of strong flexibility, high visualization, and strong interactivity. Therefore, it is widely used in application scenarios such as education, business, entertainment, medical care, industry, transportation, and discussion to improve user collaboration efficiency.

[0035] Since the use environment is relatively open and the users are not fixed, infrared interactive tablets need to be frequently turned on and off. Due to the different usage habits of different users and the lack of dedicated personnel to manage the interactive tablets, it is often the case that the infrared interactive tablets are not turned off after use. Therefore, infrared interactive tablets used in public places are usually set with a function that automatically switches to standby mode after a preset period of inactivity. However, traditional infrared interactive tablets need to be actively operated to be turned on and awakened in standby mode. Active operation requires the operator to touch a specific position on the infrared interactive tablet, which has great operational limitations. On the other hand, each time a user arrives, the tablet needs to be turned on, which leads to poor user experience.

[0036] Based on the above situation, infrared pyroelectric sensors can be used on the infrared touch interactive tablet for human body sensing. When the infrared pyroelectric sensor senses that the human body is within a certain range, the power operation can be performed. However, the infrared pyroelectric sensor needs to be connected to the control unit through a connecting wire, which increases the circuit layout inside the infrared touch interactive tablet, resulting in a complex structure of the infrared touch interactive tablet, increased wire usage, and increased product costs.

[0037] like Figure 1-4As shown, an embodiment of the present application provides an infrared touch interactive tablet 100, including a touch frame circuit board 200, an infrared transmitter, an infrared receiver and an infrared pyroelectric sensor 202 arranged on the touch frame circuit board 200, and the infrared pyroelectric sensor 202 is electrically connected to the touch frame circuit board 200, and can send a power-on signal to a control unit electrically connected to the touch frame circuit board 200 through the touch frame circuit board 200.

[0038] An infrared pyroelectric sensor 202 (PIR sensor) is an electronic sensor that measures infrared radiation emitted by an object. PIR sensors are commonly used in security alarms and automatic lighting applications. PIR sensors work by using the principle of thermal radiation. All objects with a temperature above absolute zero emit infrared radiation. A PIR sensor contains an infrared detector that detects the infrared radiation emitted by an object. When an object approaches the PIR sensor, it emits more infrared radiation. The PIR sensor detects the change in infrared radiation and triggers an alarm or performs other actions.

[0039] It should be pointed out that the power-on signal described in this application refers to the infrared touch interactive tablet 100 entering the power-on state in the standby state. In the standby state, some systems are powered normally, so it does not affect the use of its functions, that is, in this embodiment.

[0040] Reference Figure 3 As shown, in this solution, an infrared pyroelectric sensor 202 is provided to be electrically connected with the control unit, and the infrared touch interactive tablet 100 can be powered on by the sensing signal received by the infrared pyroelectric sensor 202, so that when the user moves to a certain range near the infrared touch interactive tablet 100, it can automatically enter the screen-on state from the standby state, which is smarter to use and more convenient to operate; at the same time, by directly electrically connecting the infrared pyroelectric sensor 202 to the touch frame circuit board 200, the space on the touch frame circuit board can be fully utilized for wiring and setting contacts, so that the product layout is more reasonable and the degree of integration is higher, and the wires connecting the infrared pyroelectric sensor 202 and the control unit are saved, which reduces the wiring operation and saves the wire cost.

[0041] Optional, see Figure 4 As shown, the infrared touch interactive tablet 100 described in the embodiment of the present application also includes a physical switch 203, which is electrically connected to the touch frame circuit board 200 and can send a power-on signal to a control unit electrically connected to the touch frame circuit board 200 through the touch frame circuit board 200.

[0042] The infrared touch interactive tablet 100 can also be turned on by controlling the physical switch 203, and the physical switch 203 is electrically connected to the control unit through the touch frame circuit board 200, which can also optimize the product layout, save connecting wires and reduce costs.

[0043] It can be understood that the physical switch 203 described in this embodiment is a physical switch 203 used to power on the infrared touch interactive tablet 100, which can specifically be a switch structure such as a button switch, a knob switch, a toggle switch, a touch switch, and a smart switch.

[0044] Preferably, the physical switch 203 in the embodiment of the present application is a button switch.

[0045] Furthermore, the infrared touch interactive tablet 100 described in the embodiment of the present application also includes a two-choice selector, which is electrically connected to the touch frame circuit board 200 and the control unit, and the infrared pyroelectric sensor 202 and the physical switch 203 are both electrically connected to the two-choice selector through the touch frame circuit board 200.

[0046] In this solution, when the infrared pyroelectric sensor 202 receives an infrared signal from the human body or the physical switch 203 is controlled, the infrared touch interactive tablet 100 can be switched from a standby state to a bright screen power-on state. The logical relationship between the two is a two-to-one relationship, that is, when either of the two reaches the trigger condition, the infrared touch interactive tablet 100 can be controlled to switch from a standby state to a bright screen power-on state; the specific implementation method is that the infrared pyroelectric sensor 202 and the physical switch 203 are connected to the same two-to-one selector, and the control unit is electrically connected through the two-to-one selector to realize the corresponding function.

[0047] The two-to-one selector in the infrared touch interactive flat panel 100 described in the embodiment of the present application may be any device that can realize a two-way signal selection function.

[0048] It can be:

[0049] Two-choice logic gate: Two-choice logic gate is the simplest two-choice selector. Common two-choice logic gates include NAND gate, NOR gate, XOR gate, etc.

[0050] Two-choice switch: A two-choice switch is a switch that can realize the function of selecting two signals. Common two-choice switches include toggle switches, knob switches, etc.

[0051] Two-choice circuit: Two-choice circuit is a circuit that can realize the function of selecting two signals. Common two-choice circuits include integrated circuits, discrete component circuits, etc.

[0052] Optionally, the touch frame circuit board 200 is electrically connected to the control unit via a flexible flat cable.

[0053] A flexible flat cable (FFC) is a flat, flexible cable consisting of multiple conductors. It is usually made of two or more layers of insulating material with the conductors embedded in it. FFC is often used to connect components in electronic devices, such as connecting a display screen 103 to a motherboard, connecting a sensor to a controller, etc.

[0054] FFC has the following advantages:

[0055] Small size and light weight: FFC is much smaller and lighter than traditional cables, which makes it very suitable for use in small electronic devices.

[0056] Good flexibility: FFC can be bent into various shapes, which makes it ideal for applications with limited space.

[0057] Good anti-interference performance: The wires of FFC are usually protected by a shielding layer, which makes it have good anti-interference performance.

[0058] It should be pointed out that the use of FFC to connect the touch frame circuit board 200 and the control unit is not a limitation of the present application. In other embodiments, FPC or FFC+ may be used to connect the touch frame circuit board 200 and the control unit.

[0059] The control unit described in this application is MCU, SOC or CPU.

[0060] MCU is the abbreviation of Microcontroller Unit, which means "micro control unit" in Chinese. It is an integrated circuit chip that uses ultra-large-scale integrated circuit technology to integrate the central processing unit CPU with data processing capabilities, random access memory RAM, read-only memory ROM, multiple I / O ports and interrupt systems, timer / counter and other functions (may also include display drive circuit, pulse width modulation circuit, analog multiplexer, A / D converter and other circuits) into a small and complete microcomputer system on a silicon chip.

[0061] SOC is the abbreviation of System on Chip, which means "system on chip" in Chinese. It is an integrated circuit that integrates the entire computer system or other electronic system into a single chip. SOC can process digital signals, analog signals, mixed signals and even higher frequency signals.

[0062] CPU is the abbreviation of Central Processing Unit, which means "central processing unit" in Chinese. It is one of the main devices of a computer, and its main function is to interpret computer instructions and process data in computer software.

[0063] Specifically, in this embodiment, SOC is used as the control unit.

[0064] Furthermore, the infrared touch interactive tablet 100 described in the embodiment of the present application further includes light-sensing lamp beads, which are electrically connected to the touch frame circuit board 200 and electrically connected to the control unit through the touch frame circuit board 200. The light-sensing lamp beads are used to sense ambient light and can adjust the display brightness of the display screen 103 according to the brightness intensity of the ambient light, so that the user can obtain a better user experience.

[0065] During operation, the photosensitive lamp beads receive ambient light and convert light signals into electrical signals.

[0066] The electrical signal is transmitted to the control unit, and the control unit calculates the brightness of the ambient light according to the strength of the electrical signal. The control unit adjusts the display brightness of the display screen 103 according to the brightness of the ambient light.

[0067] Specifically, the key parameters for adjusting the brightness of the display screen 103 by means of the photosensitive lamp beads include:

[0068] Initial brightness value: When the ambient light is dim, the initial brightness of the display screen 103 can be set to be higher so that the user can clearly see the displayed content.

[0069] Brightness threshold: When the brightness of the ambient light exceeds the brightness threshold, the control unit starts to adjust the brightness of the display screen 103.

[0070] Brightness adjustment range: The control unit can reasonably adjust the brightness of the display screen 103 according to the brightness change of the ambient light to ensure the display effect of the display screen 103.

[0071] For example, in the case of concentrated light, the brightness of the ambient light is 700 lux. According to the setting of the brightness threshold, when the brightness of the ambient light exceeds 700 lux, the control unit starts to adjust the brightness of the display screen 103.

[0072] Assuming that the brightness adjustment range is 200 lux, when the brightness of the ambient light is 700 lux, the brightness of the display screen 103 can be set to 500 lux. When the brightness of the ambient light is 1000 lux, the brightness of the display screen 103 can be set to 300 lux.

[0073] In this way, the brightness of the display screen 103 can be reasonably adjusted according to the changes in ambient light, thereby improving the user experience.

[0074] Specifically, the touch frame circuit board 200 in the embodiment of the present application includes a receiver circuit board provided with a receiver and a transmitter circuit board provided with a transmitter, and the infrared pyroelectric sensor 202 is provided on the receiver circuit board or the transmitter circuit board.

[0075] The infrared touch interactive tablet 100 described in the present application can be a common touch screen (one side TX, one side RX) or a double-sided infrared touch screen (for example, top and left TX, bottom and right RX).

[0076] In the case of having more touch frame circuit boards 200, there will be more space for arranging contacts. Therefore, in a further preferred embodiment of the present application, a physical button is also connected to the touch frame circuit board 200, and the physical button is electrically connected to the control unit through the touch frame circuit board 200.

[0077] In this embodiment, the physical key is a six-button panel, and the functions of various keys are realized by means of a software shift register. A six-button panel is a device with six buttons for controlling electronic devices. They are generally used in home automation, industrial control, and healthcare applications. Its specific structure and its functional implementation method belong to conventional technical means in this field, and will not be described in detail in this application.

[0078] Furthermore, the infrared touch interactive tablet 100 described in the embodiment of the present application also includes an installation frame, the touch frame circuit board 200 is arranged in the installation frame, the infrared pyroelectric sensor 202, the physical switch 203, the physical button and the light-sensitive lamp beads are all embedded in the installation frame and exposed at the installation frame for easy operation control or sensing.

[0079] The working principle of the infrared pyroelectric sensor 202 is that when infrared radiation irradiates the pyroelectric element, it will cause the generation of electrons and holes in the pyroelectric element. These electrons and holes will move under the action of the electric field to generate current. The magnitude of the current is proportional to the intensity of the infrared radiation. Therefore, the infrared pyroelectric sensor 202 needs to be exposed to ambient light during operation. In the embodiment of the present application, the infrared pyroelectric sensor 202 is embedded in the installation frame and exposed at the installation frame, so that the infrared pyroelectric sensor 202 can accurately obtain ambient light, thereby performing effective sensing control.

[0080] Similarly, the working process of the light-sensitive lamp beads also needs to sense ambient light, so their setting method is similar to that of the infrared pyroelectric sensor 202. The physical switch 203 and the physical button both require touch operation, so they also adopt an exposed structure.

[0081] Reference Figure 5As shown, in an optional embodiment of the present application, the physical switch 203 includes a mechanical structure and a pressure sensor, the mechanical structure is configured to trigger the pressure sensor, and the pressure sensor is electrically connected to the touch frame circuit board 200. In this embodiment, the pressure sensor is arranged below the physical mechanical structure. When the mechanical structure is pressed, the pressure sensor detects the change in pressure to determine whether the key is pressed. Using a pressure sensor for key detection can detect the depth of key pressing, thereby achieving more precise control, and can detect the degree of key pressing, thereby achieving the distinction between keys of different functions.

[0082] Optionally, refer to Figure 6 As shown, in another optional embodiment of the present application, the infrared touch interactive tablet also includes a pressure sensor. The difference from the above embodiment is that in this embodiment, the pressure sensor is no longer triggered by a physical switch and is directly connected to the infrared pyroelectric sensor 202 and the touch frame circuit board 200.

[0083] By using a physical switch 203 to connect the infrared pyroelectric sensor 202 and the touch frame circuit board 200, when the infrared pyroelectric sensor 202 senses a human body signal, it controls the pressure sensor to generate different levels of pressure, and when the pressure value reaches a preset value, it turns on the control.

[0084] Specifically, the infrared pyroelectric sensor 202 is electrically connected to an ultrasonic transducer, and the pressure sensor is controlled by the ultrasonic transducer.

[0085] When the electrical signal of the infrared pyroelectric sensor 202 is input into the driving circuit of the ultrasonic transducer, the driving circuit controls the vibration of the ultrasonic transducer according to the magnitude and frequency of the electrical signal. The vibration of the ultrasonic transducer generates ultrasonic waves, which can propagate through the air or other media and interact with objects. When ultrasonic waves interact with objects, mechanical movement is generated. Therefore, when the ultrasonic waves are transmitted to the pressure sensor, the power-on operation is triggered.

[0086] That is, the infrared pyroelectric sensor is connected to and transmits signals to the pressure sensor. The infrared pyroelectric sensor detects human signals with different signal strengths depending on the distance of the human body. The infrared pyroelectric sensor uses infrared radiation emitted by the human body to detect the human body. The intensity of infrared radiation emitted by the human body is related to the surface temperature of the human body, and the surface temperature of the human body is related to the distance of the human body. Therefore, the closer the distance to the human body, the greater the intensity of infrared radiation emitted by the human body, and the greater the signal strength detected by the infrared pyroelectric sensor.

[0087] In this solution, a trigger threshold can be preset. When the signal strength received by the pressure sensor from the infrared pyroelectric sensor reaches the preset minimum value, the pressure sensor sends a power-on signal to wake up the display. When the signal strength received by the pressure sensor from the infrared pyroelectric sensor does not reach the preset value, the pressure sensor does not send a power-on signal to avoid accidental triggering of the power-on when a person is standing far away.

[0088] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0089] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0090] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0091] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. An infrared touch interactive tablet (100), characterized in that: The invention comprises a touch frame circuit board (200), an infrared transmitter, an infrared receiver and an infrared pyroelectric sensor (202) arranged on the touch frame circuit board (200); the infrared pyroelectric sensor (202) is electrically connected to the touch frame circuit board (200) and can send a power-on signal to a control unit electrically connected to the touch frame circuit board (200) through the touch frame circuit board (200).

2. The infrared touch interactive tablet (100) according to claim 1, characterized in that: It also includes a physical switch (203), which is electrically connected to the touch frame circuit board (200) and can send a power-on signal to a control unit electrically connected to the touch frame circuit board (200) through the touch frame circuit board (200).

3. The infrared touch interactive tablet (100) according to claim 2, characterized in that: It also includes a two-choice selector, which is electrically connected to the touch frame circuit board (200) and the control unit, and the infrared pyroelectric sensor (202) and the physical switch (203) are both electrically connected to the two-choice selector through the touch frame circuit board (200).

4. The infrared touch interactive tablet (100) according to claim 2, characterized in that: It also includes light-sensitive lamp beads, which are electrically connected to the touch frame circuit board (200) and electrically connected to the control unit through the touch frame circuit board (200).

5. The infrared touch interactive tablet (100) according to claim 1, characterized in that: The touch frame circuit board (200) comprises a receiver circuit board provided with a receiver and a transmitter circuit board provided with a transmitter, and the infrared pyroelectric sensor (202) is provided on the receiver circuit board or the transmitter circuit board.

6. The infrared touch interactive tablet (100) according to claim 4, characterized in that: The touch frame circuit board (200) is also connected to a physical key, and the physical key is electrically connected to the control unit through the touch frame circuit board (200).

7. The infrared touch interactive tablet (100) according to claim 6, characterized in that: It also includes an installation frame, the touch frame circuit board (200) is arranged in the installation frame, the infrared pyroelectric sensor (202), the physical switch (203), the physical button and the light-sensitive lamp beads are all embedded in the installation frame and exposed at the installation frame for easy operation control or sensing.

8. The infrared touch interactive tablet (100) according to claim 2, characterized in that: The physical switch (203) comprises a mechanical structure and a pressure sensor, wherein the mechanical structure is configured to trigger the pressure sensor, and the pressure sensor is electrically connected to the touch frame circuit board (200).

9. The infrared touch interactive tablet (100) according to claim 1, characterized in that: It also includes a pressure sensor, which connects the infrared pyroelectric sensor (202) and the touch frame circuit board (200).

10. The infrared touch interactive tablet (100) according to claim 9, characterized in that: The infrared pyroelectric sensor (202) is electrically connected to an ultrasonic transducer, and the pressure sensor is triggered by the ultrasonic transducer.

Images