Infrared light conduction structure, infrared control circuit and infrared control method

Abstract

The embodiment of the invention relates to an infrared light conduction structure, an infrared control circuit and an infrared control method, a second infrared module is used for receiving an infrared signal and providing a compensation infrared signal for a first infrared module so as to counteract the influence of ambient light in infrared gesture recognition, so that the infrared gesture recognition is more accurate; and the first infrared module and the second infrared module are both arranged on the dielectric plate, and the dielectric plate can realize PCB multiplexing by redesigning a PCB on which the first infrared module is originally mounted, so that the problems of high cost and unstable reliability caused by adding additional optical devices are avoided. Meanwhile, a third infrared module can be integrated on the dielectric plate, so that the conduction efficiency of infrared receiving signals is improved, the integration degree of the infrared light conduction structure is higher, layout and production of circuit devices are facilitated, and the production cost is reduced.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of infrared technology, and more particularly, to an infrared light conduction structure, an infrared control circuit, and an infrared control method. Background Art

[0002] Infrared gesture recognition is a human-computer interaction method based on infrared sensor technology. By capturing and analyzing the motion patterns of the hand in the infrared spectrum, the recognition and control of various gestures can be achieved. Infrared gesture recognition technology mainly relies on the reflection characteristics of infrared light. When the hand or other objects move, they will block or reflect the infrared light beam emitted by the infrared sensor. After the sensor captures the changes in these reflected lights, it converts them into electrical signals and processes them through complex algorithms to finally analyze the specific actions and intentions of the gestures.

[0003] Infrared gesture recognition is mainly applied to terminals such as mobile phones and car infotainment systems. However, under different lighting conditions, the effects of gesture segmentation and tracking will be significantly affected. The change in light will cause obvious differences in gesture segmentation effects, and the tracking performance becomes unstable, and even may lead to tracking failure. In the existing technical solutions, infrared light is transmitted to the optical sensor by adding special optical devices such as dedicated light guides or light-shielding caps on the structure. It is necessary to consider thermal mechanical stress, tolerance accuracy requirements, and the quality and cleanliness of the optical devices. The requirements for the materials of mechanical design are high, the cost is high, and the reliability is unstable. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention provide an infrared light conduction structure, an infrared control circuit, and an infrared control method to solve the problems in the prior art that the conduction of infrared light through optical devices requires high requirements for the materials of mechanical design, high cost, and unstable reliability.

[0005] According to one aspect of the embodiments of the present invention, an infrared light conduction structure is provided, including: A dielectric plate having a first light guide hole and a second light guide hole. The first light guide hole is penetrated through the dielectric plate, and the second light guide hole is provided on one surface of the dielectric plate; A first infrared module fixed on the dielectric plate along the first light guide hole. The first infrared module obtains an infrared reception signal through the first light guide hole; And a second infrared module fixed on the dielectric plate along the second light guide hole, and the second infrared module emits a compensation infrared signal to the first infrared module through the dielectric plate.

[0006] In some optional embodiments, the dielectric plate includes a first reflection layer, a light guide layer, and a second reflection layer arranged in sequence; Wherein, the first light guide hole is penetrated through the first reflection layer, the light guide layer and the second reflection layer; the second light guide hole is formed by opening a hole in the first reflection layer or the second reflection layer, and the second light guide hole is communicated with the light guide layer.

[0007] In some alternative embodiments, the first reflection layer and the second reflection layer are copper layers; the light guide layer is an FR4 dielectric layer.

[0008] In some alternative embodiments, the aperture of the first light guide hole gradually increases along the light source projection direction of the first infrared module.

[0009] In some alternative embodiments, at least one third infrared module is further included, the third infrared module is disposed on the dielectric board, and the third infrared module is configured to emit an infrared emission signal.

[0010] According to another aspect of the embodiments of the present invention, an infrared control circuit is provided. Based on the above infrared light conduction structure, the circuit includes: A power supply circuit having a first power supply interface and supplying power externally through the first power supply interface; A first infrared driving circuit connected to the first power supply interface and configured to be connected to the second infrared module; And a main control module connected to the first power supply interface, the first infrared driving circuit and the first infrared module, configured to control the second infrared module to emit a compensation infrared signal through the first infrared driving circuit, and receive an infrared reception signal through the first infrared module.

[0011] In some alternative embodiments, the first infrared driving circuit includes a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5, a resistor R1, a resistor R2 and a resistor R3; The base of the triode Q1 and the base of the triode Q2 are connected to the first control end of the main control module; the emitter of the triode Q1 is connected to the first power supply interface, and the collector is connected to the base of the triode Q3; the collector of the triode Q3 is connected to the first end of the first compensation lamp of the second infrared module, and the emitter is grounded; the collector of the triode Q2 is connected to the first end of the second compensation lamp of the second infrared module, and the emitter is grounded; The base and the collector of the triode Q4 and the base of the triode Q5 are connected to the second control end of the main control module; the emitter of the triode Q4 is connected to the first power supply interface through the resistor R1; the emitter of the triode Q5 is connected to the first power supply interface through the resistor R2, and the collector is connected to the second end of the first compensation lamp, the second end of the second compensation lamp and the first end of the resistor R3; the second end of the resistor R3 is connected to the first power supply interface.

[0012] In some alternative embodiments, it further includes at least one second infrared driving circuit, which is connected to the third infrared module and the main control module. The second infrared driving circuit is used to receive the control signal of the main control module and control the third infrared module to emit an infrared emission signal.

[0013] In some alternative embodiments, the second infrared driving circuit includes a triode Q6, a triode Q7, a triode Q8, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, and a capacitor C2; The base of the triode Q6 is connected to the first power supply interface through the resistor R4 and to the power supply terminal through the resistor R5. The emitter is connected to the third control terminal of the main control module, and the collector is connected to the base and collector of the triode Q7 and the base of the triode Q8; The emitter of the triode Q7 is connected to the second power supply interface of the power supply circuit, the first end of the capacitor C1, and the first end of the capacitor C2. The second end of the capacitor C1 and the second end of the capacitor C2 are grounded; The emitter of the triode Q8 is connected to the second power supply interface through the resistor R8, and the collector is connected to the emission lamp of the third infrared module.

[0014] In some alternative embodiments, the main control module is provided with at least one infrared receiving end, and the infrared receiving end is electrically connected to the receiving lamp of the first infrared module.

[0015] In some alternative embodiments, the power supply circuit includes a buck chip, an inductor L1, at least one capacitor C3, and at least one capacitor C4; The input end of the buck chip is the second power supply interface, and the second power supply interface is connected to the first end of the inductor L1 and the first end of the capacitor C3. The second end of the inductor L1 is connected to an external power supply; the output end of the buck chip is the first power supply interface; the first end of the capacitor C4 is connected to the first power supply interface, and the second end of the capacitor C4 is grounded.

[0016] According to another aspect of the embodiments of the present invention, an infrared control method is provided. Based on the above infrared control circuit, the method includes: Real-time acquisition of the infrared reception signal of the first infrared module and the infrared emission signal of the third infrared module; Obtaining real-time infrared parameters by calculating the ratio of the infrared reception signal and the infrared emission signal, and obtaining a compensation value according to the difference between the real-time detection parameter and the preset target infrared parameter; According to the compensation value, the current magnitude of the compensation infrared signal of the second infrared module is adjusted in real time.

[0017] In some alternative embodiments, the current phase of the second infrared module is opposite to that of the third infrared module; When the real-time detection parameter is greater than the target infrared parameter, the current of the second infrared module is reduced to lower the real-time infrared parameter to the target infrared parameter; When the real-time detection parameter is less than the target infrared parameter, the current of the second infrared module is increased to raise the real-time infrared parameter to the target infrared parameter.

[0018] The present invention provides an infrared light conduction structure, an infrared control circuit and an infrared control method, and the beneficial effects are as follows: 1. For the infrared light conduction structure of the present invention, the second infrared module provides a compensation infrared signal for the first infrared module to receive the infrared signal, so as to offset the influence of ambient light in infrared gesture recognition, making the infrared gesture recognition more accurate; moreover, both the first infrared module and the second infrared module of the present invention are arranged on the dielectric plate, and the dielectric plate here can be realized by redesigning the original PCB board for installing the first infrared module, so as to achieve PCB reuse and avoid the problems of high cost and unstable reliability caused by adding additional optical devices. At the same time, a third infrared module can be integrated on the dielectric plate, which not only improves the conduction efficiency of the infrared received signal, but also has a higher integration degree of the infrared light conduction structure, facilitating the layout and production of circuit devices to reduce production costs.

[0019] 2. For the infrared control circuit of the present invention, it is connected to the first infrared module and the second infrared module to control the second infrared module to output a compensation infrared signal to the first infrared module, so as to offset the influence of ambient light in infrared gesture recognition and make the infrared gesture recognition more accurate. At the same time, the infrared control circuit can also integrate a second infrared drive circuit to control the third infrared module, facilitating the unified control of the emission signal, reception signal and compensation signal of the infrared light conduction structure to improve the stability and reliability of infrared control. At the same time, the infrared control circuit can be arranged on the dielectric plate of the infrared light conduction structure, and the realization of dielectric plate reuse not only ensures the accuracy of infrared signal transmission, but also reduces production costs.

[0020] 3. For the infrared control method of the present invention, the real-time infrared parameter is obtained by acquiring and calculating the ratio of the infrared received signal and the infrared transmitted signal, and the current magnitude of the compensation infrared signal is adjusted in real time according to the difference between the real-time detection parameter and the preset target infrared parameter. By adjusting the current magnitude of the compensation infrared signal, the present invention can offset the influence of ambient light, improve the infrared reception efficiency, and make the infrared gesture recognition more accurate.

[0021] The above description is only an overview of the technical solution of the example of the present invention. In order to be able to understand the technical means of the embodiments of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the examples of the present invention more obvious and understandable, the following specific embodiments of the present invention are specifically given. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are only used to illustrate the embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 Fig. 1 shows a first schematic structural diagram of the infrared light conduction structure of Embodiment 1 provided by the present invention; Figure 2 Fig. 2 shows a second schematic structural diagram of the infrared light conduction structure of Embodiment 1 provided by the present invention; Figure 3 Fig. 3 shows a circuit schematic diagram of the main control module of Embodiment 2 provided by the present invention; Figure 4 Fig. 4 shows a circuit schematic diagram of the first infrared drive circuit of Embodiment 2 provided by the present invention; Figure 5 Fig. 5 shows a circuit schematic diagram of the second infrared drive circuit of Embodiment 2 provided by the present invention; Figure 6 Fig. 6 shows a circuit schematic diagram of the power supply circuit of Embodiment 2 provided by the present invention; Figure 7 Fig. 7 shows a schematic flow diagram of the infrared control method of Embodiment 3 provided by the present invention.

[0023] Reference numerals: 1, dielectric plate; 11, light guide layer; 12, first reflective layer; 13, second reflective layer; 2, first infrared module; 3, second infrared module; 4, third infrared module; 5, first light guide hole; 6, second light guide hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The exemplary embodiments of the present invention will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein.

[0025] Embodiment 1: Figures 1-2A first embodiment of an infrared light transmission structure of the present invention is shown, in which the infrared light transmission structure specifically includes a dielectric plate 1, a first infrared module 2 and a second infrared module 3. Through the infrared light transmission structure of the present invention, a compensating infrared signal is added on the basis of the original infrared receiving signal to offset the influence of ambient light; the first infrared module 2 and the second infrared module 3 are both arranged on the dielectric plate 1, and the dielectric plate 1 here can realize PCB reuse by redesigning the PCB board originally installed with the first infrared module 2.

[0026] Specifically, the dielectric plate 1 has a first light guide hole 5 and a second light guide hole 6. The first light guide hole 5 is arranged through the dielectric plate 1, and the second light guide hole 6 is arranged on a surface of the dielectric plate 1; the dielectric plate 1 is used to install the first infrared module 2 and the second infrared module 3. Specifically, the first infrared module 2 is arranged in the first light guide hole 5, and the second infrared module 3 is arranged in the second light guide hole 6 for installation. In some specific embodiments, the first light guide hole 5 is a through hole, and the second light guide hole 6 is a blind hole to match the characteristics of the first infrared module 2 and the second infrared module 3.

[0027] The first infrared module 2 is fixed on the dielectric plate 1 along the first light guide hole 5, and the first infrared module 2 obtains the infrared receiving signal through the first light guide hole 5; the first infrared module 2 is fixed on the surface of the dielectric plate 1, and the receiving lamp of the first infrared module 2 is connected to the first light guide hole 5, and receives the external infrared light source through the first light guide hole 5.

[0028] The second infrared module 3 is fixed on the dielectric plate 1 along the second light guide hole 6, and the second infrared module 3 transmits a compensation infrared signal to the first infrared module 2 through the dielectric plate 1. The second infrared module 3 is fixed on the surface of the dielectric plate 1, and the compensation lamp of the second infrared module 3 is connected to the second light guide hole 6, so that the compensation infrared signal of the second infrared module 3 is transmitted to the first light guide hole 5 through the transmission path inside the dielectric plate 1 until it is received by the first infrared module 2.

[0029] The infrared light transmission structure of the present invention provides a compensating infrared signal for the infrared signal received by the first infrared module 2 through the second infrared module 3, so as to offset the influence of ambient light in infrared gesture recognition, thereby making the infrared gesture recognition more accurate; and the first infrared module 2 and the second infrared module 3 of the present invention are both arranged on the dielectric board 1, and the dielectric board 1 here can realize PCB reuse by redesigning the PCB board originally installed with the first infrared module 2, so as to avoid the problems of high cost and unstable reliability caused by adding additional optical devices.

[0030] In some alternative embodiments, the dielectric plate 1 includes a first reflective layer 12, a light guide layer 11, and a second reflective layer 13 arranged in sequence; wherein, the first light guide hole 5 penetrates through the first reflective layer 12, the light guide layer 11, and the second reflective layer 13; the second light guide hole 6 is formed by opening a hole in the first reflective layer 12 or the second reflective layer 13 and is communicated with the light guide layer 11. In a specific example, the first reflective layer 12 and the second reflective layer 13 are copper layers; the light guide layer 11 is an FR4 dielectric layer, which is mainly formed by interweaving glass fibers and epoxy resin. In addition, a filler can be added to the FR4 dielectric layer. The light guide layer 11 is located between the first reflective layer 12 and the second reflective layer 13. After the compensation infrared signal of the second infrared module 3 is projected from the first light guide hole 5, it is conducted in the light guide layer 11 and under the reflection of the first reflective layer 12 and the second reflective layer 13, the compensation infrared signal is transmitted into the first light guide hole 5 and given to the first infrared module 2 for reception. Among them, the dielectric plate 1 can be a PCB copper clad laminate; the first infrared module 2 and the second infrared module 3 can be fixed on the dielectric plate 1 by soldering or gluing. The first light guide hole 5 is a through hole, which can avoid the influence of the dielectric plate 1 on the light in the first light guide hole 5. The second light guide hole 6 is a blind hole and is communicated with the light guide layer 11 to avoid the influence of copper or ink on the first reflective layer 12 or the second reflective layer 13 on the second infrared module 3.

[0031] In addition, the first infrared module 2 and the second infrared module 3 can be arranged on the same surface or different surfaces of the dielectric layer, or the first infrared module 2 is arranged on the upper surface or the lower surface of the dielectric layer, and the second infrared module 3 is arranged on the side surface of the dielectric. In the above manner, the compensation infrared signal of the second infrared module 3 can be conducted to the first infrared module 2 through the dielectric layer.

[0032] In some alternative embodiments, the aperture of the first light guide hole 5 gradually increases along the light source projection direction of the first infrared module 2. In this embodiment, the aperture of the first light guide hole 5 can be set to gradually increase along the light source projection direction of the first infrared module 2, so that the first light guide hole 5 presents a light focusing effect; not only improving the reception efficiency of the first infrared module 2; at the same time, by designing the shape of the first light guide hole 5, the light source of the second infrared module 3 can be focused in the first light guide hole 5 to ensure the light conduction effect of the second infrared module 3.

[0033] In some alternative embodiments, see Figure 2, further including at least one third infrared module 4. The third infrared module 4 is disposed on the dielectric board 1, and the third infrared module 4 is used to emit infrared emission signals. In this embodiment, the third infrared module 4 can also be integrated on the dielectric board 1, which not only improves the conduction efficiency of the infrared reception signals, but also has a higher integration degree of the infrared light conduction structure, facilitating the layout and production of circuit devices to reduce production costs. Among them, the infrared emission signals emitted by the third infrared module are refracted or reflected when encountering the target object, and the refracted or reflected infrared signals are partially output to the infrared reception signals to achieve the detection of the target object.

[0034] In addition, when the first infrared module 2 and the second infrared module 3 are fixed on the first reflection layer 12 of the dielectric board 1, the third infrared module 4 can be fixedly disposed on the second reflection layer 13 of the dielectric board 1, and the light source projection direction of the third infrared module 4 is consistent with the reception direction of the first infrared module to improve the infrared transmission efficiency.

[0035] Embodiment 2: Figures 3-6 A first embodiment of an infrared control circuit of the present invention is shown. Based on the infrared light conduction structure of Embodiment 1, this circuit includes a power supply circuit, a first infrared drive circuit, and a main control module; among them, The power supply circuit has a first power interface and supplies power externally through the first power interface; the first infrared drive circuit is connected to the first power interface and is used to connect to the second infrared module; the main control module is connected to the first power interface, the first infrared drive circuit, and the first infrared module, and is used to control the second infrared module to emit compensation infrared signals through the first infrared drive circuit, and receive infrared reception signals through the first infrared module.

[0036] The infrared control circuit of the present invention is connected to the first infrared module and the second infrared module to control the second infrared module to output compensation infrared signals to the first infrared module, so as to offset the influence of ambient light in infrared gesture recognition and make the infrared gesture recognition more accurate. At the same time, the infrared control circuit can be arranged on the dielectric board of the infrared light conduction structure, and the reuse of the dielectric board not only ensures the accuracy of infrared signal transmission, but also reduces production costs.

[0037] Specifically, the first infrared driving circuit includes transistor Q1, transistor Q2, transistor Q3, transistor Q4, transistor Q5, resistor R1, resistor R2, and resistor R3; the bases of transistor Q1 and transistor Q2 are connected to the first control terminal of the main control module; the emitter of transistor Q1 is connected to the first power supply interface, and the collector is connected to the base of transistor Q3; the collector of transistor Q3 is connected to the first end of the first compensation lamp of the second infrared module, and the emitter is grounded; the collector of transistor Q2 is connected to the first end of the second compensation lamp of the second infrared module, and the emitter is grounded; the bases and collectors of transistor Q4 and transistor Q5 are connected to the second control terminal of the main control module; the emitter of transistor Q4 is connected to the first power supply interface through resistor R1; the emitter of transistor Q5 is connected to the first power supply interface through resistor R2, and the collector is connected to the second end of the first compensation lamp, the second end of the second compensation lamp, and the first end of resistor R3; the second end of resistor R3 is connected to the first power supply interface.

[0038] In some specific examples, the first compensation lamp and the second compensation lamp of the second infrared module are used to increase the magnitude of the compensated infrared signal; specifically, transistor Q1 and transistor Q2 receive the signal from the first control terminal of the main control module, and transistor Q4 and transistor Q5 receive the signal from the second control terminal of the main control module to control the magnitude of the current flowing into the first compensation lamp and the second compensation lamp.

[0039] In some alternative embodiments, there is at least one second infrared driving circuit, which is connected to the third infrared module and the main control module. The second infrared driving circuit is used to receive the control signal of the main control module and control the third infrared module to emit an infrared emission signal.

[0040] Specifically, the second infrared driving circuit includes transistor Q6, transistor Q7, transistor Q8, resistor R4, resistor R5, resistor R6, resistor R7, capacitor C1, and capacitor C2; the base of transistor Q6 is connected to the first power supply interface through resistor R4 and to the power supply terminal through resistor R5, the emitter is connected to the third control terminal of the main control module, and the collector is connected to the bases and collectors of transistor Q7 and the base of transistor Q8; the emitter of transistor Q7 is connected to the second power supply interface of the power supply circuit, the first end of capacitor C1, and the first end of capacitor C2 through resistor R6, and the second ends of capacitor C1 and capacitor C2 are grounded; the emitter of transistor Q8 is connected to the second power supply interface through resistor R8, and the collector is connected to the emission lamp of the third infrared module.

[0041] In this embodiment, the present invention receives the signal from the third control terminal of the main control module through the triode Q6, and controls the on / off of the emission lamp through the triode Q7 and the triode Q8. The second infrared drive circuit is integrated in the infrared control circuit to control the third infrared module, facilitating the unified control of the emission signal, reception signal, and compensation signal of the infrared light conduction structure, so as to improve the stability and reliability of the infrared control.

[0042] In some alternative embodiments, the main control module is provided with at least one infrared receiving terminal, and the infrared receiving terminal is electrically connected to the receiving lamp of the first infrared module. In this embodiment, the receiving lamp of the first infrared module can be directly connected to the main control module to output the received infrared reception signal to the main control module for processing. The infrared receiving terminal can have a positive terminal and a negative terminal, wherein the positive terminal is connected to the positive electrode of the receiving lamp, and the negative terminal is connected to the negative electrode of the receiving lamp. In addition, the main control module can be of the STM32 series to control the first infrared module, the second infrared module, and the third infrared module.

[0043] In some alternative embodiments, the power supply circuit includes a buck chip, an inductor L1, at least one capacitor C3, and at least one capacitor C4; the input end of the buck chip is the second power supply interface, and the second power supply interface is connected to the first end of the inductor L1 and the first end of the capacitor C3, and the second end of the inductor L1 is connected to an external power supply; the output end of the buck chip is the first power supply interface; the first end of the capacitor C4 is connected to the first power supply interface, and the second end of the capacitor C4 is grounded. In this embodiment, the buck chip can be a buck chip with the model number TLV70033QDDCRQ1, which can convert the 5V of the external power supply into 3.3V. The inductor L1 is used to filter the clutter of the external power supply to generate a second power supply and output it through the second power supply interface; the output end of the buck chip outputs the first power supply through the first power supply interface. The capacitors C3 and C4 are used for filtering.

[0044] Embodiment 3: Figure 7 The first embodiment of an infrared control method is shown. Based on the infrared control circuit of Embodiment 2, the method includes: 710. Obtain the infrared reception signal of the first infrared module and the infrared emission signal of the third infrared module in real time; in step 710, the infrared reception signal of the first infrared module and the infrared emission signal of the third infrared module can be obtained through the infrared control circuit in Embodiment 2.

[0045] 720. Obtain real-time infrared parameters by calculating the ratio of the infrared received signal and the infrared transmitted signal, and obtain a compensation value according to the difference between the real-time detected parameter and the preset target infrared parameter. In step 720, the preset target infrared parameter can be determined by experimental measurement, and its value is stored in the register of the main control module of the infrared control circuit. In a specific example, the target infrared parameter can be 4uA / 10mA. By setting the target infrared parameter, the compensated infrared signal can be adjusted in real time, so that the real-time detected parameter approaches or reaches the preset target infrared parameter.

[0046] 730. According to the compensation value, adjust the current magnitude of the compensated infrared signal of the second infrared module in real time. In step 730, after obtaining the compensation value in the present invention, the current magnitude of the second infrared module can be controlled through the first control terminal and the second control terminal of the control circuit, so as to realize the real-time adjustment of the compensated infrared signal.

[0047] More specifically, the current phase of the second infrared module is opposite to the current phase of the third infrared module; when the real-time detected parameter is greater than the target infrared parameter, the current of the second infrared module is reduced to lower the real-time infrared parameter to the target infrared parameter; when the real-time detected parameter is less than the target infrared parameter, the current of the second infrared module is increased to increase the real-time infrared parameter to the target infrared parameter.

[0048] The infrared control method of the present invention obtains real-time infrared parameters by acquiring and calculating the ratio of the infrared received signal and the infrared transmitted signal, and adjusts the current magnitude of the compensated infrared signal in real time according to the difference between the real-time detected parameter and the preset target infrared parameter. By adjusting the current magnitude of the compensated infrared signal, the present invention can offset the influence of ambient light, improve the infrared reception efficiency, and make the infrared gesture recognition more accurate.

[0049] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system, or other device. In addition, the embodiments of the present invention are not directed to any particular programming language.

[0050] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. Similarly, in order to streamline the present invention and help understand one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Among them, the claims following the specific implementation manner are hereby expressly incorporated into the specific implementation manner, and each claim itself serves as a separate embodiment of the present invention.

[0051] Those skilled in the art can understand that the modules in the devices in the embodiments can be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive.

[0052] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim enumerating several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. An infrared light conduction structure, characterized in that, Comprising: A dielectric plate having a first light guiding hole and a second light guiding hole. The first light guiding hole is penetratingly provided on the dielectric plate, and the second light guiding hole is provided on one surface of the dielectric plate; A first infrared module fixed on the dielectric plate along the first light guiding hole. The first infrared module obtains an infrared reception signal through the first light guiding hole; And a second infrared module fixed on the dielectric plate along the second light guiding hole, and the second infrared module emits a compensation infrared signal to the first infrared module through the dielectric plate.

2. The infrared light conduction structure according to claim 1, wherein, The dielectric plate includes a first reflective layer, a light guiding layer, and a second reflective layer arranged in sequence; Wherein, the first light guiding hole is penetratingly provided in the first reflective layer, the light guiding layer, and the second reflective layer; the second light guiding hole is formed by opening a hole in the first reflective layer or the second reflective layer, and the second light guiding hole is communicated with the light guiding layer.

3. The infrared light conduction structure according to claim 2, characterized in that, The first reflective layer and the second reflective layer are copper layers; the light guiding layer is an FR4 dielectric layer.

4. The infrared light conduction structure according to claim 2, wherein, The aperture of the first light guiding hole gradually increases along the light source projection direction of the first infrared module.

5. The infrared light conduction structure according to claim 3, wherein It further includes at least one third infrared module. The third infrared module is arranged on the dielectric plate, and the third infrared module is used for emitting an infrared emission signal.

6. An infrared control circuit, characterized in that, Based on the infrared light conduction structure according to any one of claims 1-5, the circuit includes: A power supply circuit having a first power supply interface and supplying power externally through the first power supply interface; A first infrared driving circuit connected to the first power supply interface and used for connecting to the second infrared module; And a main control module connected to the first power supply interface, the first infrared driving circuit, and the first infrared module, and used for controlling the second infrared module to emit a compensation infrared signal through the first infrared driving circuit, and receiving an infrared reception signal through the first infrared module.

7. The infrared control circuit according to claim 6, characterized in that, The first infrared driving circuit includes a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5, a resistor R1, a resistor R2, and a resistor R3; The base of the triode Q1 and the base of the triode Q2 are connected to the first control end of the main control module; the emitter of the triode Q1 is connected to the first power supply interface, and the collector is connected to the base of the triode Q3; the collector of the triode Q3 is connected to the first end of the first compensation lamp of the second infrared module, and the emitter is grounded; the collector of the triode Q2 is connected to the first end of the second compensation lamp of the second infrared module, and the emitter is grounded; The base and the collector of the triode Q4, and the base of the triode Q5 are connected to the second control end of the main control module; the emitter of the triode Q4 is connected to the first power supply interface through the resistor R1; the emitter of the triode Q5 is connected to the first power supply interface through the resistor R2, and the collector is connected to the second end of the first compensation lamp, the second end of the second compensation lamp, and the first end of the resistor R3; the second end of the resistor R3 is connected to the first power supply interface.

8. The infrared control circuit according to claim 6, wherein It further includes at least one second infrared driving circuit. The second infrared driving circuit is connected to the third infrared module and the main control module, and the second infrared driving circuit is used for receiving a control signal of the main control module and controlling the third infrared module to emit an infrared emission signal.

9. The infrared control circuit according to claim 8, wherein The second infrared driving circuit includes a triode Q6, a triode Q7, a triode Q8, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1 and a capacitor C2; The base of the triode Q6 is connected to the first power supply interface through the resistor R4 and to the power supply terminal through the resistor R5. The emitter is connected to the third control terminal of the main control module, and the collector is connected to the base and collector of the triode Q7 and the base of the triode Q8; The emitter of the triode Q7 is connected to the second power supply interface of the power supply circuit, the first end of the capacitor C1 and the first end of the capacitor C2 through the resistor R6. The second ends of the capacitor C1 and the capacitor C2 are grounded; The emitter of the triode Q8 is connected to the second power supply interface through the resistor R8, and the collector is connected to the emission lamp of the third infrared module.

10. The infrared control circuit according to claim 6, wherein The main control module is provided with at least one infrared receiving end, and the infrared receiving end is electrically connected to the receiving lamp of the first infrared module.

11. The infrared control circuit according to claim 6, wherein, The power supply circuit includes a buck chip, an inductor L1, at least one capacitor C3 and at least one capacitor C4; The input end of the buck chip is the second power supply interface, and the second power supply interface is connected to the first end of the inductor L1 and the first end of the capacitor C3. The second end of the inductor L1 is connected to an external power supply; the output end of the buck chip is the first power supply interface; the first end of the capacitor C4 is connected to the first power supply interface, and the second end of the capacitor C4 is grounded.

12. An infrared control method, characterized in that, Based on the infrared control circuit according to claims 6-11, the method includes: Obtaining the infrared receiving signal of the first infrared module and the infrared emission signal of the third infrared module in real time; Obtaining real-time infrared parameters by calculating the ratio of the infrared receiving signal and the infrared emission signal, and obtaining a compensation value according to the difference between the real-time detection parameter and the preset target infrared parameter; According to the compensation value, adjusting the current magnitude of the compensation infrared signal of the second infrared module in real time.

13. The infrared control method according to claim 12, characterized in that, The current phase of the second infrared module is opposite to the current phase of the third infrared module; When the real-time detection parameter is greater than the target infrared parameter, reducing the current of the second infrared module to reduce the real-time infrared parameter to the target infrared parameter; When the real-time detection parameter is less than the target infrared parameter, increasing the current of the second infrared module to increase the real-time infrared parameter to the target infrared parameter.

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