Infrared scanning device, control method, equipment and medium

Abstract

The invention relates to the technical field of infrared scanning, in particular to an infrared scanning device and a control method. The device comprises a shift register and a rapid charging and discharging circuit, the emitter is used for sequentially lighting according to a preset time interval and forming an overlapped emission sequence, each receiving lamp of the receiver is connected with one end of the rapid charging and discharging circuit through the shift register, and the other end of the rapid charging and discharging circuit is connected with the controller. The controller is used for generating a dynamic gating signal and carrying out signal acquisition on the receiver; and the shift register is used for controlling the dynamic combination selection of each receiving lamp based on the dynamic gating signal. Through deep cooperation of hardware circuit innovation and system-level time sequence optimization, a transmitting-receiving space-time matrix coupling mechanism is formed, a time sequence-space composite optimization scanning framework is constructed, the response speed bottleneck of a traditional scheme is ingeniously overcome, and the system-level time sequence optimization scanning framework is constructed. The technical breakthrough that the scanning frame rate is increased, the response delay is reduced, and the infrared scanning layout compatible with any topology is achieved.

Description

Technical Field

[0001] The present invention relates to the field of infrared scanning technology, and in particular to an infrared scanning device and a control method. Background Art

[0002] Infrared scanning technology, with its fast response and low energy costs, has become the preferred solution for high-speed detection equipment (such as infrared linear position sensors and light curtains) and large-scale interactive devices (such as large infrared touch frames). Specifically, infrared scanning technology achieves millisecond-level response through non-contact detection (for example, a light curtain triggers a safety shutdown when it detects an object), meeting the real-time requirements of industrial automation and security scenarios. In linear position sensors, infrared scanning can quickly capture changes in object displacement, making it suitable for high-speed production lines or robot navigation. Using bus-driven technology, infrared touch frames can divide large screens into multiple modular areas, scanning only a specific area to improve response speed.

[0003] Infrared scanning devices typically consist of a transmitter, receiver, and controller. The transmitter includes multiple transmitting lights (infrared LEDs), and the receiver includes a receiving light (photodiode or phototransistor) positioned opposite the transmitter. The specific configuration of the transmitter and receiver can be determined based on actual scanning needs, including one-to-one, one-to-many, and many-to-one. Existing infrared scanning devices achieve basic touch detection through row / column sequential scanning and fixed threshold judgment. However, their low frame rate, high latency, and poor anti-interference capabilities limit high-end applications. Improving the scanning efficiency of infrared scanning devices is urgently needed to overcome this bottleneck.

[0004] For example, Chinese patent CN111078060A discloses a skip scanning method, circuit, touch frame, and electronic device for an infrared touch frame. This patent employs grouped scanning receivers, sequentially sending infrared signals to identically numbered receivers within each group. This achieves a skip scanning effect, reducing scanning time for large touch screens and improving response speed. While the grouped skip scanning method reduces the number of scans, existing infrared scanning technology still suffers from the following technical issues: 1. Limitations in circuit switching and signal processing speed: Existing infrared scanning devices require a certain amount of time to wait for the receiving circuit to stabilize each time a receiver group is switched. This limits the frame rate during scanning. This is especially true when scanning large touch screens, where there are many receivers. This results in significant delays and long scanning times in traditional scanning methods.

[0005] 2. Timing Waste: On the one hand, existing transmitters follow a "turn on light → turn off light → turn on next light" cycle, requiring frequent on / off switching of lights, group by group. The cumulative time required for each on / off switch significantly extends the overall scanning cycle. On the other hand, existing receivers scan in fixed groups, requiring the receiver to process the remaining data at the end after the entire group scan is complete, resulting in limited flexibility.

[0006] 3. Low signal sampling efficiency: Data acquisition relies on the controller to process the receiver signals one by one, resulting in a positive correlation between the number of samples in a single scan and the number of receivers, which is inefficient. Summary of the Invention

[0007] In response to the above technical problems, the present invention proposes an infrared scanning device, control method, equipment and medium, which aim to overcome the limitations of circuit switching and signal processing speed, optimize scanning timing and improve scanning flexibility.

[0008] In the first aspect, the present application provides an infrared scanning device, including a shift register and a fast charge and discharge circuit. The transmitter is used to light up the lights in sequence according to a preset time interval and form an overlapping transmission sequence. The receiving lights of the receiver are connected to one end of the fast charge and discharge circuit via the shift register, and the other end of the fast charge and discharge circuit is connected to the controller. The controller is used to generate a dynamic selection signal and collect signals from the receiver. The shift register is used to control the dynamic combination selection of each receiving light based on the dynamic selection signal.

[0009] In some embodiments, a plurality of first analog switches are provided at the output end of the shift register, and the first analog switches are located between each receiving lamp of the receiver and the fast charge and discharge circuit. The shift register is used to control the opening and closing of each first analog switch in parallel based on a dynamic selection signal to realize dynamic reconstruction of the receiving lamp combination selection.

[0010] In some embodiments, the fast charge and discharge circuit includes a coupling capacitor and a second analog switch. The output end of the shift register is connected to one end of the coupling capacitor, and the second analog switch is connected to the other end of the coupling capacitor. The output end of the coupling capacitor and the second analog switch are both connected to the controller. The controller is used to control the second analog switch to close for a preset time after completing the selection of the receiving light combination to quickly charge and discharge the coupling capacitor.

[0011] In some embodiments, there are several fast charge and discharge circuits, and the fast charge and discharge circuits include a buffer stage amplifier and an amplifier stage amplifier. The output end of the shift register is connected to the input end of the buffer stage amplifier, the output end of the buffer stage amplifier is connected to one end of the coupling capacitor, the input end of the amplifier stage amplifier and the second analog switch are both connected to the other end of the coupling capacitor, the output end of the amplifier stage amplifier and the second analog switch are both connected to the controller, and the controller is provided with several ADC acquisition circuits, and the input end of each ADC acquisition circuit is connected one-to-one with the output end of the amplifier stage amplifier of each fast charge and discharge circuit.

[0012] In a second aspect, the present application provides a method for controlling an infrared scanning device, comprising the following steps: The transmitters light up in sequence according to the preset time intervals and form an overlapping transmission sequence; Generate a dynamic selection signal and send it to the shift register, wherein the dynamic selection signal is used to indicate the dynamic combination selection of the receiving lamp; The shift register controls the dynamic combination selection of each receiving lamp based on the dynamic selection signal; Control all fast charge and discharge circuits to perform charge and discharge operations; Acquire signals from the receiver.

[0013] In some embodiments, controlling the dynamic combination selection of each receiving lamp based on the dynamic selection signal includes: The opening and closing of the first analog switch is controlled based on the dynamic selection signal to achieve dynamic reconstruction of the receiving lamp combination selection.

[0014] In some embodiments, controlling all fast charge and discharge circuits to perform charge and discharge operations includes: The second analog switches of each fast charge and discharge circuit are controlled to be closed to quickly charge and discharge the coupling capacitor, and the second analog switches are controlled to be opened after a preset time.

[0015] In some embodiments, performing signal acquisition on a receiver includes: The received light signals are collected in parallel through a multi-channel ADC collection circuit.

[0016] In a third aspect, an electronic device includes a processor and a memory; The processor is connected to the memory; The memory is used to store executable program code; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to execute the control method of the infrared scanning device as described above.

[0017] In a fourth aspect, a computer-readable storage medium stores a computer program, which, when executed by a processor, implements the control method of the infrared scanning device as described above.

[0018] The beneficial technical effects of the present invention include at least: 1. An infrared scanning device, control method, equipment and medium are adopted. The controller generates a dynamic selection signal to drive the shift register, breaking through the traditional fixed-sequence scanning mode. The control output pin of the shift register forms an arbitrary topological mapping relationship with the receiving light array, realizing non-continuous dynamic combination selection of the receiving light group; combined with a fast charging and discharging circuit, it effectively shortens the circuit stabilization time after channel switching and eliminates the signal establishment delay; at the same time, combined with the phase-staggered lighting strategy of the transmitting end (adjacent transmitting lights are activated at a preset time interval instead of being turned off), a transmitting-receiving space-time matrix coupling mechanism is formed, and a dynamically reconfigurable space-time collaborative scanning architecture is constructed, achieving a technological breakthrough in improving the scanning frame rate and reducing the response delay, which can support high-precision real-time interaction of ultra-large-scale interactive devices. Specifically: On the one hand, the existing transmitter needs to operate in a "light on → light off → light next light" cycle, which requires frequent switching of lights and switching group by group. The time for each switch of lighting on and off accumulates, which greatly extends the overall scanning cycle; on the other hand, the existing receiver needs to scan in fixed groups, and the end remainder needs to wait for the completion of the complete large group scan before being processed separately by the receiver, which has poor flexibility. At the same time, the existing infrared scanning device needs a certain amount of time to wait for the receiving circuit to stabilize each time the receiver group is switched, resulting in a limited frame rate during scanning. To this end, in response to the technical problems of timing waste, circuit switching and signal processing speed limitations, and insufficient flexibility in the prior art, this application combines the phase-staggered lighting strategy of the transmitter with the dynamic receiver selection of the receiver. The transmitter lights up at one time to form a continuous overlapping transmission sequence, ensuring that the signal capture window of the receiver overlaps, and adopts the dynamic selection signal generated by the shift register receiving controller to break through the timing bottleneck of the traditional fixed sequence scanning mode, so that the shift register and the receiving light array form an arbitrary topological mapping relationship within a single transmission cycle. It supports non-continuous dynamic combination selection of receiving light groups, optimizes the "serial scanning between groups" of the existing technology into "parallel scanning within the group", and realizes dynamic optimization of the scanning path; cooperates with the fast charging and discharging circuit to force global charging and discharging of all receiving light channels after the receiving channel is switched, greatly shortens the circuit stabilization time after the channel switching, eliminates the signal establishment delay, and combines the phase-interleaved lighting strategy and the dynamic switching of the receiving light combination selection to reduce the number of lighting times and eliminate the loss of light-off time, thereby greatly eliminating the invalid waiting time in the traditional scanning scheme and improving the flexibility. In summary, this application forms a transmitting-receiving space-time matrix coupling mechanism through the deep collaboration of hardware circuit innovation and system-level timing optimization, and constructs a time-space composite optimized scanning architecture, which cleverly overcomes the response speed bottleneck of the traditional solution, and realizes a technical breakthrough in improving the scanning frame rate, reducing the response delay, and compatibility with any topology of infrared scanning layout, achieving the technical effect of "1+1>2", and providing underlying technical support for high-precision real-time interaction of ultra-large-scale interactive devices.

[0019] 2. The collaborative design of "continuous overlapping transmission + multi-channel parallel sampling" is adopted. Through the cascade design of buffer-stage amplifiers and amplifier-stage amplifiers, a distributed amplification structure is formed in the signal path. The buffer stage is responsible for low-noise pre-amplification and driving the coupling capacitor to eliminate the influence of impedance mutation caused by analog switch switching. The amplifier stage provides programmable gain and bandwidth expansion to overcome the attenuation problem of long-distance transmission of large-scale equipment. At the same time, multiple independent fast charging and discharging channels work together with the controller's multi-ADC acquisition circuit to achieve global charge preset (forced charging and discharging regardless of whether the channel is selected), effectively shortening the stabilization time after channel switching. This design enables multiple receiving light signals to be synchronously collected by multiple ADCs, avoiding one-by-one polling and improving sampling efficiency. Combined with the phase-interleaved lighting strategy of the transmitter and the dynamic multi-channel parallel acquisition mechanism of the receiver, it forms a time and space dimension expansion, further solving the technical problems of signal attenuation, long scanning cycle and acquisition efficiency of large-scale infrared equipment.

[0020] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the receiving circuit of the infrared scanning device provided in Example 1 of the present invention.

[0022] Figure 2 This is a schematic diagram of the partial structure of the receiving circuit of the infrared scanning device provided in the first embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the overall structure of the receiving circuit of the infrared scanning device provided in the second embodiment of the present invention.

[0024] Figure 4 This is a structural diagram of a fast charge and discharge circuit provided in Example 2 of the present invention.

[0025] Figure 5 This is a structural diagram of an electronic device provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0026] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0027] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0028] Example 1: Please see the attached Figure 1 , Figure 1 This is a schematic diagram of the overall structure of a receiving circuit of an infrared scanning device provided in one embodiment of this specification.

[0029] like Figure 1 As shown, the infrared scanning device may at least include: a shift register and a fast charge and discharge circuit. The transmitter is used to light up the lamps in sequence according to a preset time interval and form an overlapping transmission sequence. The receiving lamps of the receiver are connected to one end of the fast charge and discharge circuit via the shift register. The other end of the fast charge and discharge circuit is connected to the controller. The controller is used to generate a dynamic selection signal and collect signals from the receiver. The shift register is used to control the dynamic combination selection of each receiving lamp based on the dynamic selection signal.

[0030] The shift register is a flip-flop-based digital circuit structure used to shift data bit by bit under clock pulse control. The number of shift registers in this embodiment can be adjusted based on the actual number of receiving lamps in each receiver. This embodiment does not impose any restrictions, as long as the control output pins of the shift register can be connected to each receiving lamp in a one-to-one correspondence to achieve dynamic combination control of each receiving lamp. It will be appreciated that in the prior art, shift registers are typically used for fixed-sequence scanning (such as in a keyboard matrix). In this embodiment, the shift register is designed to support arbitrary dynamic selection of infrared receiving lamps and reduce the number of lamp activations.

[0031] It can be understood that in this embodiment, a dynamic selection signal is generated by the controller (MCU / FPGA), and the shift register controls the selection of any combination of receiving lights at the receiving end based on the dynamic selection signal. In each scanning cycle, the receiving circuit can simultaneously activate multiple receiving channels to form a matrix signal capture network.

[0032] Among them, this embodiment does not limit the number of fast charging and discharging circuits to be set, as long as the fast charging and discharging circuit can perform charging and discharging operations on all receiving lamp channels in the receiving circuit to ensure that the circuit is fast and stable after the dynamic combination switching of each receiving lamp.

[0033] Specifically, the technical concept of this embodiment is: a dynamic selection signal is generated by a controller to drive the shift register, breaking through the traditional fixed-sequence scanning mode, so that the control output pin of the shift register forms an arbitrary topological mapping relationship with the receiving light array, thereby realizing non-continuous dynamic combination selection of the receiving light group; in conjunction with a fast charging and discharging circuit, the circuit stabilization time after channel switching is compressed from the traditional 200μs to less than 50μs, eliminating the signal establishment delay; at the same time, combined with the phase-staggered lighting strategy of the transmitter (adjacent transmitting lights are activated at preset time intervals instead of being turned off), a transmitting-receiving space-time matrix coupling mechanism is formed, and a dynamically reconfigurable space-time collaborative scanning architecture is constructed, achieving a technological breakthrough in improving the scanning frame rate and reducing the response delay, which can support high-precision real-time interaction of ultra-large interactive devices.

[0034] On the other hand, an embodiment of this specification provides a method for controlling an infrared scanning device, which may include at least the following steps: The transmitters light up in sequence according to the preset time intervals and form an overlapping transmission sequence; Generate a dynamic selection signal and send it to the shift register, the dynamic selection signal is used to indicate the dynamic combination selection of the receiving lamp; The shift register controls the dynamic combination selection of each receiving lamp based on the dynamic selection signal; Control all fast charge and discharge circuits to perform charge and discharge operations; Acquire signals from the receiver.

[0035] For example, taking 24 transmitting lights as an example, in this embodiment, the transmitters light up in sequence according to the preset time intervals to form an overlapping transmitting sequence as follows: The traditional serial operation of "turn on light → turn off light → turn on next light" at the transmitter end is changed to a continuous lighting mode for multiple lights. The 24 transmitting lights are controlled by the internal state machine of the transmitter FPGA and activated sequentially at intervals of 0.2ms (for example: light 1 is turned on at t=0ms, light 2 is turned on at t=0.2ms, light 3 is turned on at t=0.4ms, etc.). Each transmitting light maintains an effective lighting duration of 5ms, so that the signals of adjacent lights have a 4.8ms overlapping window at the receiving end, forming a continuously overlapping transmission sequence, ensuring the overlapping signal capture windows at the receiving end.

[0036] Among them, the step of controlling the fast charge and discharge circuit to perform charge and discharge operations is executed after the shift register completes the dynamic combination selection of each receiving lamp based on the dynamic selection signal for the first time. The specific charge and discharge time is determined according to the time required for multiple switching scans at the receiving end. Moreover, regardless of whether the receiving lamp corresponding to the receiving channel is selected, the fast charge and discharge circuit quickly charges and discharges all receiving channels, thereby reducing the time it takes for the circuit to reach stability after the receiving lamp switches the combination selection, thereby ensuring that the overall circuit is fast and stable after the dynamic combination of each receiving lamp is switched.

[0037] Further, in this embodiment, please refer to the attached Figure 2 A plurality of first analog switches are provided at the output end of the shift register. The first analog switches are located between each receiving lamp of the receiver and the fast charge and discharge circuit. The shift register is used to control the opening and closing of each first analog switch in parallel based on the dynamic selection signal to realize dynamic reconstruction of the receiving lamp combination selection.

[0038] On the other hand, in this embodiment, the dynamic combination selection of each receiving lamp is controlled based on the dynamic selection signal, including: The opening and closing of the first analog switch is controlled based on the dynamic selection signal to achieve dynamic reconstruction of the receiving lamp combination selection.

[0039] For example, taking 24 transmitting lamps and a three-stage cascade shift register as an example, in this embodiment, the shift register controls the opening and closing of the first analog switch based on the dynamic selection signal to realize dynamic reconstruction of the receiving lamp combination selection as follows: The three-stage cascade shift register receives the dynamic selection signal (24-bit control word) sent by the controller, outputs a 24-bit control signal to control the opening and closing of the first analog switch, realizes seamless receiving light channel switching, and dynamically selects the currently activated receiving light group (taking a total of 4 receiving light channels as an example). The control word update cycle is 0.1ms, supports 50 switching of receiving light groups within a single transmission cycle (5ms), and realizes dynamic reconstruction of receiving light combination selection through parallel loading. It can be understood that the fast switching characteristic of the first analog switch reduces the reconstruction switching time of the receiver from milliseconds to microseconds, which can further achieve high-frequency scanning.

[0040] Furthermore, in this embodiment, the fast charging and discharging circuit includes a coupling capacitor and a second analog switch. The output end of the shift register is connected to one end of the coupling capacitor, and the second analog switch is connected to the other end of the coupling capacitor. The output end of the coupling capacitor and the second analog switch are both connected to the controller. The controller is used to control the second analog switch to close for a preset time after completing the selection of the receiving light combination to quickly charge and discharge the coupling capacitor.

[0041] It is understandable that this embodiment only describes the structure of one fast charge and discharge circuit, and the structures of other fast charge and discharge circuits can refer to this embodiment.

[0042] On the other hand, in this embodiment, controlling all the fast charge and discharge circuits to perform charge and discharge operations includes: The second analog switches of each fast charge and discharge circuit are controlled to be closed to quickly charge and discharge the coupling capacitor, and the second analog switches are controlled to be opened after a preset time.

[0043] It is understandable that in response to the fast and stable switching requirements of the receiver in the infrared scanning device, the charging and discharging time of the fast charging and discharging circuit is further optimized through the second analog switch to achieve fast stabilization of the circuit after the receiver is switched, and the switching time is compressed to the microsecond level.

[0044] Specifically, the technical concept of this embodiment is: on the one hand, the existing transmitter needs to operate in a "light on → light off → light next light" cycle, and needs to frequently turn lights on and off and switch group by group. The time for each switch of turning on and off lights accumulates, which greatly extends the overall scanning cycle; on the other hand, the existing receiver needs to scan in fixed groups, and the end margin needs to wait for the completion of the complete large group scan before being processed separately by the receiver, which has poor flexibility. At the same time, the existing infrared scanning device needs a certain amount of time to wait for the receiving circuit to stabilize each time the receiver group is switched, resulting in a limited frame rate during scanning. To this end, in response to the technical problems of timing waste, circuit switching and signal processing speed limitations, and insufficient flexibility in the prior art, this embodiment combines the phase-staggered lighting strategy of the transmitting end with the dynamic receiver selection of the receiving end. The transmitter lights up at one time to form a continuous overlapping transmission sequence, ensuring that the signal capture window of the receiving end overlaps, and adopts the dynamic selection signal generated by the shift register receiving controller to break through the timing bottleneck of the traditional fixed sequence scanning mode, so that the shift register and the receiving light array form an arbitrary topological mapping relationship in a single time. During the transmission cycle, it supports non-continuous dynamic combination selection of receiving light groups, optimizes the "serial scanning between groups" of the existing technology into "parallel scanning within the group", and realizes dynamic optimization of the scanning path; cooperates with the fast charging and discharging circuit to force global charging and discharging of all receiving light channels after the receiving channel is switched, greatly shortens the circuit stabilization time after the channel switching, eliminates the signal establishment delay, and combines the phase-staggered lighting strategy and the dynamic switching of the receiving light combination selection to reduce the number of lighting times and eliminate the light-off time loss, thereby greatly eliminating the invalid waiting time in the traditional scanning scheme and improving the flexibility. In summary, this embodiment forms a transmitting-receiving space-time matrix coupling mechanism through the deep collaboration of hardware circuit innovation and system-level timing optimization, and constructs a time-space composite optimized scanning architecture, which cleverly overcomes the response speed bottleneck of the traditional solution, and realizes a technical breakthrough in improving the scanning frame rate, reducing the response delay, and being compatible with the infrared scanning layout of any topology, achieving the technical effect of "1+1>2", and providing the underlying technical support for high-precision real-time interaction of ultra-large-scale interactive devices.

[0045] Example 2: Please see the attached Figure 3 and attached Figure 4 , Figure 3 This is a schematic diagram of the overall structure of a receiving circuit of an infrared scanning device provided in another embodiment of this specification. Figure 4 This is a schematic structural diagram of a fast charge and discharge circuit provided in yet another embodiment of this specification.

[0046] This embodiment only describes the additional parts compared to the first embodiment. The rest of the technical concept of the structural design is similar to that of the first embodiment and will not be described in detail in this embodiment. Figure 3 and Figure 4 As shown, in this embodiment, several fast charge and discharge circuits are provided, and the fast charge and discharge circuits include a buffer stage amplifier and an amplifier stage amplifier. The output end of the shift register is connected to the input end of the buffer stage amplifier, the output end of the buffer stage amplifier is connected to one end of the coupling capacitor, the input end of the amplifier stage amplifier and the second analog switch are both connected to the other end of the coupling capacitor, the output end of the amplifier stage amplifier and the second analog switch are both connected to the controller, and the controller is provided with several ADC acquisition circuits, and the input end of each ADC acquisition circuit is connected one-to-one with the output end of the amplifier stage amplifier of each fast charge and discharge circuit.

[0047] It is understandable that this embodiment only describes the structure of one fast charge and discharge circuit, and the structures of other fast charge and discharge circuits can refer to this embodiment.

[0048] Specifically, the technical concept of this embodiment is: through the cascade design of buffer-stage amplifiers and amplifier-stage amplifiers, a distributed amplification structure is formed in the signal path - the buffer stage is responsible for low-noise pre-amplification and driving the coupling capacitor to eliminate the influence of impedance mutation caused by analog switch switching; the amplifier stage provides programmable gain and bandwidth expansion to overcome the attenuation problem of long-distance transmission of large-size equipment; at the same time, multiple independent fast charging and discharging channels and the controller's multi-ADC acquisition circuit cooperate to achieve global charge preset (forced charging and discharging regardless of whether the channel is selected), effectively shortening the stabilization time after channel switching. This design enables multiple receiving light signals to be synchronously collected by N parallel ADCs, and the sampling efficiency is increased by N times. At the same time, through the noise shaping of the two-stage amplifier, the technical problems of signal attenuation, switching delay and acquisition efficiency of large-size infrared equipment are further solved.

[0049] On the other hand, in this embodiment, collecting signals from the receiver includes: The received light signals are collected in parallel through a multi-channel ADC collection circuit.

[0050] For example, using a 100×100 infrared array and a 10-channel ADC acquisition circuit, the prior art uses a packet hopping method to reduce the number of scans from 10^4 to approximately 10^3. However, each switch requires 1ms of stabilization time, resulting in a total time consumption of 1m. The method provided in this embodiment, however, combines non-continuously distributed fast switching (1μs / switch) at the receiving end within the same transmission cycle with 10-channel parallel sampling, reducing the number of scans to 10^2, with a single cycle of 0.1ms and a total time consumption of only 10ms. The continuous lighting strategy at the transmitting end further reduces timing loss by 10%. This demonstrates that compared to the prior art, this embodiment significantly improves response speed, achieving a qualitative shift from "perceptible delay" to "real-time response," overcoming the technical issue of low signal sampling efficiency in the prior art.

[0051] This embodiment adopts the collaborative design of "continuous overlapping transmission + multi-channel parallel sampling". By designing a multi-channel fast charging and discharging circuit with integrated coupling capacitors and amplification circuits, and cooperating with the multi-channel ADC acquisition circuit set in the controller, the synchronous acquisition of multiple receiving lamp signals is realized, avoiding one-by-one polling. Combined with the phase-interleaved lighting strategy of the transmitting end and the dynamic multi-channel parallel acquisition mechanism of the receiving end, the expansion of the time and space dimensions is formed, the scanning cycle is further shortened, and the frame rate is significantly improved.

[0052] Example 3: Please see the attached Figure 5 , Figure 5 The present invention provides a structural diagram of an electronic device according to another embodiment of the present invention.

[0053] like Figure 5 As shown, the electronic device 500 may include: at least one processor 501 , at least one network interface 504 , a user interface 503 , a memory 505 and at least one communication bus 502 .

[0054] The communication bus 502 may be used to implement connection and communication among the above components.

[0055] The user interface 503 may include buttons, and the optional user interface may also include a standard wired interface or a wireless interface.

[0056] The network interface 504 may include, but is not limited to, a Bluetooth module, an NFC module, a Wi-Fi module, and the like.

[0057] Among them, the processor 501 may include one or more processing cores. The processor 501 uses various interfaces and lines to connect the various parts of the entire electronic device 500, and executes various functions of the electronic device 500 and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 505, and calling data stored in the memory 505. Optionally, the processor 501 can be implemented in at least one hardware form of DSP, FPGA, PLA. The processor 501 can integrate one or a combination of CPU, GPU and modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to handle wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 501, but may be implemented separately through a chip.

[0058] The memory 505 may include either RAM or ROM. Optionally, the memory 505 may include non-transitory computer-readable media. The memory 505 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 505 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the aforementioned method embodiments, etc.; the data storage area may store data related to the aforementioned method embodiments, etc. The memory 505 may also optionally be at least one storage device located remotely from the aforementioned processor 501. As a computer storage medium, the memory 505 may include an operating system, a network communication module, a user interface module, and an application program. The processor 501 may be configured to invoke the application program stored in the memory 505 and execute the method described in one or more of the aforementioned embodiments.

[0059] Example 4: Another embodiment of the present disclosure provides a computer-readable storage medium storing instructions that, when executed on a computer or processor, cause the computer or processor to perform one or more steps of the aforementioned embodiments. If the components of the aforementioned electronic device are implemented as software functional units and used as independent downstream task predictions or tasks, they can be stored in the computer-readable storage medium.

[0060] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. A computer program product comprises one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of this specification are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted via a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, digital versatile discs (DVDs)), or semiconductor media (eg, solid state drives (SSDs)).

[0061] The above description is merely a description of the preferred embodiments disclosed in this application and the technical principles employed. Those skilled in the art should understand that the scope of protection provided by this disclosure is not limited to technical solutions formed by a specific combination of the aforementioned technical features, but also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents without departing from the scope of the disclosure. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0062] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details have been included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

Claims

1. An infrared scanning device, comprising a transmitter, a receiver and a controller, wherein the receiver comprises a plurality of receiving lights corresponding to the transmitter, characterized in that: It includes a shift register and a fast charge and discharge circuit. The transmitter is used to light up the lights in sequence according to the preset time interval and form an overlapping transmission sequence. The receiving lights of the receiver are connected to one end of the fast charge and discharge circuit through the shift register, and the other end of the fast charge and discharge circuit is connected to the controller. The controller is used to generate a dynamic selection signal and collect signals from the receiver. The shift register is used to control the dynamic combination selection of each receiving light based on the dynamic selection signal.

2. An infrared scanning device according to claim 1, characterized in that: The output end of the shift register is provided with several first analog switches, which are located between each receiving lamp of the receiver and the fast charging and discharging circuit. The shift register is used to control the opening and closing of each first analog switch in parallel based on the dynamic selection signal to realize dynamic reconstruction of the receiving lamp combination selection.

3. An infrared scanning device according to claim 1, characterized in that: The fast charge and discharge circuit includes a coupling capacitor and a second analog switch. The output end of the shift register is connected to one end of the coupling capacitor, and the second analog switch is connected to the other end of the coupling capacitor. The output end of the coupling capacitor and the second analog switch are both connected to a controller. The controller is used to control the second analog switch to close for a preset time after completing the selection of the receiving light combination to quickly charge and discharge the coupling capacitor.

4. An infrared scanning device as claimed in claim 3, characterized in that: The fast charge and discharge circuit is provided with several, and the fast charge and discharge circuit includes a buffer stage amplifier and an amplifier stage amplifier. The output end of the shift register is connected to the input end of the buffer stage amplifier, the output end of the buffer stage amplifier is connected to one end of the coupling capacitor, the input end of the amplifier stage amplifier and the second analog switch are both connected to the other end of the coupling capacitor, the output end of the amplifier stage amplifier and the second analog switch are both connected to the controller, and the controller is provided with several ADC acquisition circuits, and the input end of each ADC acquisition circuit is connected one-to-one with the output end of the amplifier stage amplifier of each fast charge and discharge circuit.

5. A control method for an infrared scanning device, characterized in that: The following steps are involved: The transmitters light up in sequence according to the preset time intervals and form an overlapping transmission sequence; Generate a dynamic selection signal and send it to the shift register, wherein the dynamic selection signal is used to indicate the dynamic combination selection of the receiving lamp; The shift register controls the dynamic combination selection of each receiving lamp based on the dynamic selection signal; Control all fast charge and discharge circuits to perform charge and discharge operations; Acquire signals from the receiver.

6. A control method for an infrared scanning device as claimed in claim 5, characterized in that: Based on the dynamic selection signal, the dynamic combination selection of each receiving lamp is controlled, including: The opening and closing of the first analog switch is controlled based on the dynamic selection signal to achieve dynamic reconstruction of the receiving lamp combination selection.

7. The control method of an infrared scanning device according to claim 5, characterized in that: Control all fast charge and discharge circuits to perform charge and discharge operations, including: The second analog switches of each fast charge and discharge circuit are controlled to be closed to quickly charge and discharge the coupling capacitor, and the second analog switches are controlled to be opened after a preset time.

8. The control method of an infrared scanning device according to claim 5, characterized in that: Acquire signals from the receiver, including: The received light signals are collected in parallel through a multi-channel ADC collection circuit.

9. An electronic device, characterized in that: including a processor and a memory; The processor is connected to the memory; The memory is used to store executable program code; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to execute the control method of the infrared scanning device according to any one of claims 5 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the infrared scanning device according to any one of claims 5 to 8 is implemented.

Images