Ice and snow landscape light control method and system based on millimeter wave radar personnel positioning

Abstract

The invention relates to the technical field of light control, and provides an ice and snow landscape light control method based on millimeter wave radar personnel positioning. Through distributed detection of a plurality of millimeter-wave radars, the millimeter-wave radars are used to observe the positions and the number of personnel in a detection area, and a sending end single-chip microcomputer is used to communicate with the radars through a Can bus to obtain data and analyze the data to obtain information such as the number and the positions of the personnel. The single-chip microcomputers at the sending end and the receiving end carry out data transmission through wired communication and wireless communication including but not limited to a 485 bus. And after the receiving end single-chip microcomputer receives the number and position information of the personnel, the number or position information of the personnel is taken as a judgment basis for controlling the change of the light effect, the light effect file is read from the light program memory, and the RGB lamp strip driving circuit is controlled, so that the control of the RGB lamp strip is realized. The millimeter-wave radar is used as a detector, the problem of personnel detection in extreme weather is solved, data is transmitted through a wireless / wired path, a detector end is separated from a controller end, the problems of small space span and difficulty in large-scale control in the existing light control technology are solved, the stability is improved, the control range is widened, and the control cost is reduced. The sensor end can be placed at a position with a large distance, so that a user can arrange and use the sensor end conveniently. The method is mainly used for long-time, large-scale and large-space-span light control in a low-temperature outdoor scene.

Description

Technical Field

[0001] This invention belongs to the field of lighting control technology, and in particular relates to a method for controlling lighting in ice and snow landscapes based on millimeter-wave radar for personnel positioning. Background Technology

[0002] This invention mainly relates to technologies such as millimeter-wave radar positioning, wired / wireless data transmission, and DMX512 protocol lighting control.

[0003] Millimeter-wave radar is a sensor that uses electromagnetic waves in the 30-300 GHz frequency band (wavelength 1-10 mm) to detect targets. Its core principle is to transmit frequency-modulated continuous wave (FMCW), receive the reflected signal from the target, and then extract the target's distance, velocity, and angle information through signal processing. Its workflow consists of three parts: ① Distance detection: calculating the frequency difference between the transmitted and echo signals and obtaining the target distance through a fast Fourier transform; ② Velocity measurement: based on the Doppler effect, calculating the relative velocity through the echo frequency offset; ③ Angle positioning: using a multi-antenna array to receive the phase difference and determining the azimuth through beamforming technology. A millimeter-wave radar system consists of a millimeter-wave transceiver, an antenna array, and a digital signal processor, and features strong penetration through fog and haze, high resolution, and fast response speed. Compared to lidar, millimeter waves perform better in adverse weather conditions; compared to traditional microwave radar, its smaller wavelength allows for miniaturization design.

[0004] Ethernet is a wired local area network (LAN) technology based on the IEEE 802.3 standard. It uses the CSMA / CD protocol to enable multiple devices to share a channel, supporting high-speed (gigabit to 10 gigabit) and low-latency communication, and is widely used in enterprise networks, industrial automation, and other fields. RS-485 is a differential signal serial communication standard that supports half-duplex multi-point communication, has strong anti-interference capabilities and long-distance transmission capabilities (up to 1200 meters), and is commonly used in industrial control, sensor networks, and other scenarios. LoRa (Long Range) is a low-power wide-area network (LPWAN) technology based on spread spectrum modulation, characterized by ultra-long distances (several kilometers to tens of kilometers in urban environments) and low power consumption, suitable for large-scale IoT deployments such as smart metering and environmental monitoring. ZigBee is a short-range wireless protocol based on IEEE 802.15.4, with advantages such as self-organizing networks, low power consumption, and high node capacity (supporting tens of thousands of devices), mainly used in smart homes, industrial sensing, and other scenarios requiring dense device connections. The four technologies cover four major areas: wired high-speed communication, industrial bus, wide area Internet of Things, and short-range self-organizing network.

[0005] DMX512 is a digital transmission protocol for stage lighting control. It is an industry standard released in 1990 by the United States Institute of Stage Lighting (USITT), officially named USITT DMX512 (1990). The DMX512 protocol defines the electrical characteristics, data protocol, and data format for data transmission between lighting controllers and lighting equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a method for controlling ice and snow landscape lighting based on millimeter-wave radar personnel positioning, aiming to solve the problems of small spatial span and difficulty in large-scale control of existing lighting control technologies, thereby improving the efficiency of layout and use.

[0007] To achieve the above-mentioned functions, the present invention provides a method for controlling the lighting of ice and snow landscapes based on millimeter-wave radar personnel positioning. The lighting control method includes the following steps:

[0008] Step S1: Deploy the millimeter-wave radar detector at the designated location and power it on; the millimeter-wave radar will then detect personnel.

[0009] Step S2: The transmitting end microcontroller is powered on, and the millimeter-wave radar transmits data to the transmitting end microcontroller via the CAN bus. The microcontroller then parses the data to obtain information such as the number and location of personnel. The transmitting end transmits the data to the receiving end microcontroller via wireless / wired means.

[0010] Step S3: The receiving end microcontroller is powered on, and after receiving the data, it processes and analyzes it. The received information such as the location or number of people is used as the basis for controlling the changes in the lighting effect. The lighting effect file in the lighting memory is read and the lighting effect information is output to the RGB light strip driver circuit.

[0011] Step S4: After receiving input, the RGB LED strip driver circuit controls the power supply circuit to drive the high-voltage LED strip.

[0012] Step S5: The RGB light strip is controlled to change the lighting effects;

[0013] When a millimeter-wave radar detector is powered on and switched on, it will periodically scan targets within its detection range. The transmitting microcontroller will read the data from the millimeter-wave radar via the CAN bus, analyze it to obtain information such as the number and location of personnel, and transmit the data to the receiving end of the main control system via wireless / wired means. After receiving the data, the receiving microcontroller will analyze it, using the number of personnel or whether personnel are in a specific location as the basis for judgment, read the lighting effect file from the lighting program memory, and output the lighting control information.

[0014] A further proposed solution involves powering on the receiver, transmitter microcontrollers, and millimeter-wave radar detector. The system can withstand a voltage range of 90 to 240V. An AC-DC power supply circuit is used to step down the voltage to 12V, which then powers the millimeter-wave radar. After receiving the 12V input from the AC-DC power supply circuit, the receiver and transmitter microcontrollers use an LDO for linear regulation to obtain power inputs of 5V and 3.3V, respectively.

[0015] A further approach involves deploying multiple millimeter-wave radar detectors, each connected to the transmitting microcontroller via a CAN bus. Upon power-up, the receiving microcontroller identifies the number of active transmitters and receives data from them via wired / wireless connections.

[0016] A further solution is that the receiver microcontroller can be configured with multiple number of people thresholds or specific trigger positions. When the total number of people detected reaches different thresholds, or when people are in different trigger positions, the receiver microcontroller will read the corresponding lighting effect file from the lighting program memory and output lighting control information.

[0017] A further approach involves connecting the receiving microcontroller to a computer to modify or increase / decrease the number of preset user thresholds or specific trigger locations, or to set wired / wireless communication parameters. The transmitting microcontroller can also be connected to a computer, ensuring that the wired / wireless communication parameters are identical to those of the receiving microcontroller.

[0018] A further proposed solution is that when the number of millimeter-wave radar detectors is greater than one, the data transmission method between the transmitting and receiving microcontrollers is changed to packet header analysis mode, and data with different packet headers will be recorded separately by the receiving microcontroller.

[0019] A further solution is to store multiple lighting effects in the lighting program memory, which can be changed by programming with a computer.

[0020] The superior advantages of this invention compared to existing technologies are as follows: This system uses millimeter-wave radar for personnel detection, avoiding the problems of traditional lidar being greatly affected by environmental conditions and having poor noise resistance, and avoiding the large size and difficulty in miniaturization of microwave radar, while retaining the advantages of long detection range and strong anti-interference capability. The system's data transmission adopts wired / wireless compatible technology, enabling low-power lighting control in large-scale spaces. Furthermore, the distributed detectors improve the flexibility and practicality of system deployment. This invention utilizes a low-temperature resistant design, allowing for long-term stable operation in extreme environments down to -40 degrees Celsius. Attached Figure Description

[0021] Figure 1This is a process illustration of the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning as described in Implementation Method 1.

[0022] Figure 2 The implementation process of the method for storing lighting effects is modified for the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method 10.

[0023] Figure 3 The implementation process of the method for determining the threshold for triggering light effect changes is modified in the ice and snow landscape lighting control method based on multiple millimeter-wave radar personnel positioning described in Implementation Method 10.

[0024] Figure 4 This is a circuit diagram of the millimeter-wave radar and microcontroller driving circuit of the ice and snow landscape lighting control system based on millimeter-wave radar personnel positioning as described in Implementation Method 10.

[0025] Figure 5 This diagram illustrates the communication method between the transmitting and receiving microcontrollers of the ice and snow landscape lighting control system based on millimeter-wave radar personnel positioning, as described in Implementation Method 10.

[0026] Figure 6 The above is a flowchart of the lighting control based on changes in pedestrian flow for the ice and snow landscape lighting control system based on millimeter-wave radar personnel positioning as described in Implementation Method 10.

[0027] Figure 7 This is a circuit diagram of an RGB light strip driver for ice and snow landscape lighting control based on millimeter-wave radar personnel positioning, as described in Implementation Method 10.

[0028] Figure 8 The module structure of the wireless ice and snow landscape lighting control system based on millimeter-wave radar personnel positioning, as described in Implementation Method 10. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0032] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0033] Implementation Method 1, see [link] Figure 1 This embodiment describes a method for controlling lighting in snow and ice landscapes based on millimeter-wave radar personnel positioning. The method includes:

[0034] Step S1: Deploy the millimeter-wave radar detector at the designated location and power it on; the millimeter-wave radar will then detect personnel.

[0035] Step S2: The transmitting end microcontroller is powered on, and the millimeter-wave radar transmits data to the transmitting end microcontroller via the CAN bus. The microcontroller then parses the data to obtain information such as the number and location of personnel. The transmitting end transmits the data to the receiving end microcontroller via wireless / wired means.

[0036] Step S3: The receiving end microcontroller is powered on, and after receiving the data, it processes and analyzes it. The received information such as the location or number of people is used as the basis for controlling the changes in the lighting effect. The lighting effect file in the lighting memory is read and the lighting effect information is output to the RGB light strip driver circuit.

[0037] Step S4: After receiving input, the RGB LED strip driver circuit controls the power supply circuit to drive the high-voltage LED strip.

[0038] Step S5: The RGB light strip is controlled to change the lighting effects;

[0039] When a millimeter-wave radar detector is powered on and switched on, it will periodically scan targets within its detection range. The transmitting microcontroller reads the data from the millimeter-wave radar via the CAN bus, analyzes it to obtain information such as the number and location of personnel, and transmits the data to the receiving microcontroller via wireless / wired means. After receiving the data, the receiving microcontroller analyzes it, using the number of personnel or whether personnel are in specific locations as criteria, reads the lighting effect file from the lighting program memory, and outputs lighting control information.

[0040] This embodiment proposes a wireless ice and snow landscape lighting control technology based on millimeter-wave radar personnel positioning. The wired / wireless network transmission ensures the flexibility and reliability of the system. Millimeter-wave radar has strong anti-interference capabilities, ensuring the reliability of detection. This invention adopts a low-temperature resistant design, which can work stably for a long time in extreme low-temperature environments, adapting to outdoor use needs and spatial span requirements.

[0041] Implementation Method 2: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method 1. In step S1, the number of millimeter-wave radar detectors can be adjusted, and multiple detectors can be deployed. The maximum detection range of each millimeter-wave radar detector is 70 meters, and it can detect a maximum area from 40 degrees to 40 degrees to the left and right, with an elevation angle of 12 degrees. The detection distance and range can be adjusted by connecting the radar to the host computer software.

[0042] Implementation Method 3: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method 1. In step S1, when the millimeter-wave radar detector is powered on, it can withstand a voltage range of 90 to 240V. An AC-DC power supply circuit is used to step down the voltage to 12V, and the 12V voltage is used to power the millimeter-wave radar. After receiving the 12V voltage input processed by the AC-DC power supply circuit, the microcontrollers at the receiving and transmitting ends use an LDO for linear voltage regulation to obtain power inputs of 5V and 3.3V, respectively.

[0043] Implementation Method 4: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method 1. After the receiving end microcontroller reads the lighting effect file from the lighting program memory, it outputs to the optocoupler through multiple I / O channels. The optocoupler achieves signal isolation between the microcontroller circuit and the RGB drive circuit. Then, through the isolated gate driver, electrical isolation between the input and output is achieved, and a sufficiently large current is output to control the power supply circuit of the RGB light strip.

[0044] Implementation Method 5: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method 1. Multiple lighting effects can be stored in the lighting program memory, and the lighting effects can be changed by computer programming.

[0045] Implementation Method Six: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method One. The receiving-end microcontroller can be connected to a computer via a device to modify the set personnel threshold or specific trigger positions and increase or decrease the number, or to set the wired / wireless communication parameters. The transmitting-end microcontroller can also be connected to a computer, keeping the wired / wireless communication parameters the same as those of the receiving-end microcontroller.

[0046] Implementation Method Seven: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method One. Multiple personnel thresholds or specific trigger positions can be set in the receiver microcontroller. When the total number of detected personnel reaches different thresholds, or when personnel are in different trigger positions, the receiver microcontroller will read the corresponding lighting effect file in the lighting program memory and output lighting control information.

[0047] Implementation Method 8: This implementation method further defines the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Implementation Method 1. When the number of millimeter-wave radar detectors is greater than one, the data transmission mode between the transmitting end microcontroller and the receiving end microcontroller can be changed to packet header analysis mode.

[0048] Implementation Method Nine: A snow and ice landscape lighting control system based on millimeter-wave radar personnel positioning includes:

[0049] Millimeter-wave radar detectors are used for personnel location and transmit data to the main control system.

[0050] The transmitting microcontroller receives radar data via the CAN bus, parses it to obtain information such as the number and location of personnel, and then sends the parsed data to the receiving microcontroller.

[0051] The receiving end microcontroller receives and analyzes data from the sending end, uses the number or location of people as the basis for controlling the changes in lighting effects, reads the lighting effect file from the lighting program memory, and outputs it.

[0052] The RGB light strip driver circuit receives lighting effect data from the receiving end microcontroller and controls the RGB light strip.

[0053] The RGB light strip receives control information and data from the RGB light strip driver circuit to achieve changes in lighting effects.

[0054] Implementation Method 10, see below Figures 1 to 8 This embodiment describes a specific example of the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning described in Embodiment 1. It also serves to explain Embodiments 2 through 10. Specifically:

[0055] In this embodiment, the detection data is wirelessly transmitted to the main controller via a millimeter-wave radar detection device. The main controller then analyzes the pedestrian flow to control the lighting, thus realizing automated remote lighting control in a large space and making it convenient for users.

[0056] like Figure 1 As shown, Figure 1The implementation flow of the ice and snow landscape lighting control method based on millimeter-wave radar personnel positioning provided in the embodiments of the present invention is shown below, for ease of explanation, only the parts related to the present invention are shown, and are detailed as follows:

[0057] In step S1, based on the area requiring personnel detection, the millimeter-wave radar detector is positioned to scan the entire area. After fixing the millimeter-wave radar detector, it is powered on, supporting a wide-bandwidth voltage input ranging from 90V to 240V. The input voltage is stepped down to 12V using an ACDC circuit to power the millimeter-wave radar.

[0058] In step S2, the transmitting microcontroller is powered on with an input voltage range of 90V to 240V, and the microcontroller transmits data to the receiving microcontroller via wired / wireless means.

[0059] For step S2, combined with Figure 4 The diagram below illustrates the millimeter-wave radar and the microcontroller driver circuit at the transmitting end. The input 220V voltage is stepped down to 12V using an ACDC circuit, and then regulated by a linear voltage regulator (LDO) circuit to obtain 5V and 3.3V power supplies for the microcontroller. The transmitting microcontroller receives and analyzes the millimeter-wave radar data via the CAN bus to obtain information such as the location and number of personnel. After analysis, the data is transmitted to the receiving microcontroller via wired / wireless means.

[0060] For step S2, combined with Figure 5 The diagram shown illustrates the communication setup between the transmitting and receiving microcontrollers. Data transmission between the transmitting and receiving microcontrollers can be achieved through various wired / wireless methods, such as: wired transmission via connecting the Ethernet ports of both ends with a network cable; wired transmission via connecting the 485 interfaces of both ends with a 485 bus; or transmission via an onboard wireless network such as Zigbee or LoRa.

[0061] In step S3, the receiving microcontroller is installed at a designated location according to user needs. The main control system receiver supports a wide voltage input from 90V to 240V. The input voltage is stepped down to 12V using an ACDC circuit, and then regulated by the linear voltage regulator (LDO) circuit on the microcontroller to obtain 5V and 3.3V power inputs. After being powered on, the receiving microcontroller automatically receives data sent by the transmitting microcontroller and uses the received number or location information of personnel as the basis for controlling the changes in lighting effects. It reads the lighting effect file in the lighting program memory and outputs the lighting effect information to the RGB driver circuit.

[0062] For step S3, the judgment criterion for controlling the change of lighting effects based on the number of people is combined with... Figure 6The flowchart shown illustrates the lighting control process based on changes in pedestrian traffic. The receiving microcontroller can set one or more different pedestrian thresholds. When the number of people falls below the minimum threshold, the receiving microcontroller reads the first lighting effect file from the lighting program memory and outputs it to the RGB LED strip driver circuit. Each pedestrian threshold corresponds to a lighting effect. When the measured pedestrian traffic exceeds this threshold, the receiving microcontroller reads the corresponding lighting effect from the lighting program memory and outputs it to the RGB LED strip driver circuit. When the number of people increases or decreases to other thresholds, the receiving microcontroller reads the lighting effect corresponding to the current threshold from the lighting program memory and outputs it to the RGB LED strip driver circuit.

[0063] In step S4, the RGB LED strip driver circuit receives lighting effect information from the receiving microcontroller and controls the switching of the RGB LED strip power supply circuit.

[0064] For step S4, combined with Figure 7 The RGB LED strip driver circuit diagram shown is for reference. After receiving the lighting effect information from the receiving end microcontroller, the microcontroller decodes the lighting effect data and outputs three PWM signals, each a 5V voltage signal. These three PWM signals control three optocouplers. The downstream circuit of the optocouplers is a 12V DC drive circuit, thus achieving signal transmission and voltage isolation between the 5V microcontroller circuit and the 12V DC drive circuit through the optocouplers. The isolated gate driver achieves electrical isolation between input and output in the 12V DC drive circuit and outputs a sufficiently large current to the gate of the MOSFET in the high-voltage drive circuit. The source of the MOSFET is connected to a 220V AC input bridge, which outputs approximately 310V DC signal to the source of the MOSFET. When the microcontroller outputs a PWM signal, the optocoupler isolation short circuit and the 12V DC drive circuit provide the driving capability to turn on the MOSFET gate. The signal is then transmitted to the MOSFET gate to control the MOSFET's on / off state, thus providing three high-voltage PWM control signals to the RGB LED strip in a switching manner.

[0065] In step S5, the RGB light strip receives three PWM control messages and then performs effect transformation.

[0066] In another embodiment of the invention, such as Figure 2 As shown, the following steps are included after step S1:

[0067] In step S6, the lighting program memory can store multiple lighting effect files. The lighting effects can be changed according to user needs. The lighting program memory is programmed via a PC, first deleting unwanted lighting effect programs, then writing new lighting effect files and naming them according to the user's desired playback order. The receiving microcontroller will sequentially identify the lighting effect files and match them with the set number of users according to the correspondence written by the user.

[0068] Figure 3 The diagram illustrates the implementation flow of a snow and ice landscape lighting control method based on personnel positioning using multiple millimeter-wave radars, according to another embodiment of the present invention. For ease of explanation, only the parts relevant to the present invention are shown, and are detailed below:

[0069] In step S1, according to the area where personnel detection is required, the millimeter-wave radar detector is arranged in a position that can scan the entire area. After the millimeter-wave radar detector is fixed, it is powered on. When powered on, it supports broadband voltage input, ranging from 90V to 240V, and multiple millimeter-wave radar detectors can be arranged.

[0070] In step S7, taking the control of lighting effects based on a number of people thresholds as an example, the receiving microcontroller can be connected to a computer via an adapter to change the number of people thresholds or modify the value of the people thresholds in the main control system receiving end, according to user needs. The main control system receiving end can set one or more different people thresholds and specify the correspondence between the people thresholds and the lighting effect files. When the number of people does not meet the minimum threshold, the main control system receiving end will control the lighting controller to play the first lighting effect stored in the lighting controller. Each people threshold corresponds to a lighting effect. When the measured flow of people exceeds this threshold, the main controller will control the lighting strip to play this lighting effect. When the number of people increases or decreases to reach other thresholds, the receiving microcontroller will output the corresponding lighting effect data.

[0071] After power-on, the receiving microcontroller will obtain data from the four transmitting microcontrollers by analyzing the packet headers. The implementation method is that each transmitting microcontroller sends a unique packet header. By distinguishing the four different packet headers, the receiving microcontroller achieves one-to-many data reception.

[0072] Figure 8 The diagram illustrates the module structure of a wireless ice and snow landscape lighting control system based on millimeter-wave radar personnel positioning according to an embodiment of the present invention. For ease of explanation, only the parts relevant to the present invention are shown, and are described in detail below:

[0073] The wireless ice and snow landscape lighting control system based on millimeter-wave radar personnel positioning provided in this embodiment of the invention includes a millimeter-wave radar detector S101, a transmitting microcontroller S102, a receiving microcontroller S103, an RGB light strip driving circuit S104, and an RGB light strip S105.

[0074] The millimeter-wave radar detector S101 is used by users to deploy at locations where personnel detection is required, and transmits data to the transmitting microcontroller via the CAN bus.

[0075] The transmitting microcontroller S102 receives and analyzes personnel count and location data from the millimeter-wave radar via the CAN bus, and transmits the data to the receiving microcontroller via wireless / wired means.

[0076] The receiving end microcontroller S103 is used to receive data from the transmitting end microcontroller, perform summary processing and analysis, and then read the lighting effect file in the lighting memory to output lighting effect data to the RGB light strip driver circuit.

[0077] The RGB light strip driver circuit S104 receives lighting effect data from the receiving end microcontroller and outputs three PWM signals to control the RGB light strip through a 5V-12V isolation circuit, a 12V DC drive circuit, and a high-voltage drive circuit.

[0078] The S105 RGB light strip accepts three PWM signals to achieve lighting effect changes.

[0079] This invention transmits detection data to a transmitting microcontroller via a millimeter-wave radar detection device. The transmitting microcontroller then transmits the data to a receiving microcontroller via an optional wireless / wired method. The receiving microcontroller analyzes the volume of pedestrian traffic or the location of people to determine which lighting effect file to read and output. By separating the detector end from the controller end, this invention solves the problems of limited spatial span and difficulty in large-scale control in existing lighting control technologies, thereby improving stability and control range. The sensor ends of this invention can be placed at a considerable distance, making it convenient for users to arrange and use.

[0080] The specific embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A method for controlling lighting in snow and ice landscapes based on millimeter-wave radar personnel positioning, characterized in that, The lighting control method includes the following steps: Step S1: Deploy the millimeter-wave radar detector at the designated location and power it on; the millimeter-wave radar will then detect personnel. Step S2: The transmitting end microcontroller is powered on, and the millimeter-wave radar transmits data to the transmitting end microcontroller via the CAN bus. The microcontroller then parses the data to obtain information such as the number and location of personnel. The transmitting end transmits the data to the receiving end microcontroller via wireless / wired means. Step S3: The receiving end microcontroller is powered on, and after receiving the data, it processes and analyzes it. The received information such as the location or number of people is used as the basis for controlling the changes in the lighting effect. The lighting effect file in the lighting memory is read and the lighting effect information is output to the RGB light strip driver circuit. Step S4: After receiving the input, the RGB LED strip driver circuit outputs three PWM high-voltage drive signals; Step S5: The RGB light strip is controlled to change the lighting effects.

2. The lighting control method according to claim 1, characterized in that, It supports multiple millimeter-wave detectors to be connected to the transmitting microcontroller. The transmitting and receiving microcontrollers transmit data via wired / wireless methods, including but not limited to wired transmission methods such as Ethernet and RS485 bus, and wireless networks such as LoRa and Zigbee. After receiving the data, the receiving microcontroller uses the received personnel location or quantity information as the basis for controlling the changes in lighting effects. It reads the lighting effect file from the lighting program memory and outputs it using the DMX512 protocol to control the light strip effect changes.

3. The data transmission method according to claim 2, characterized in that, When using a wireless network for communication, the parameters of the wireless network need to be configured before use. Wireless networks with the same parameters can communicate with each other and form a network. When using wired transmission, the transmission line needs to be secure and the same communication parameters need to be set before use. The microcontrollers at the sending end and the receiving end can manually switch the data transmission mode.

4. The data transmission method according to claim 3, characterized in that, The transmission adopts a packet header analysis mechanism. Each sending microcontroller has a unique data packet header in the wireless network. It sends the number of people or location information to the receiving microcontroller and adds its own packet header, enabling the receiving microcontroller to achieve one-to-many data acquisition.

5. The lighting control method based on the number of people or location according to claim 2, characterized in that, When using the number of people as the criterion for controlling lighting effects, a threshold number can be written into the receiving microcontroller. When the receiving microcontroller detects that the total number of people has reached the threshold, it outputs lighting control information; different thresholds will correspond to different lighting control information output. When using the location information of people as the criterion for controlling lighting effects, a specific trigger location can be written into the receiving microcontroller. When the receiving microcontroller detects a target entering the location, it outputs lighting control information; different locations will correspond to different lighting control information output.

6. The method for determining the number of people or location according to claim 5, characterized in that, The number of people threshold set in the receiver microcontroller can be changed, and multiple number of people thresholds can be set. Different thresholds correspond to different lighting effects. The specific trigger position set in the receiver microcontroller can also be changed, and multiple trigger positions can be set. Different trigger positions correspond to different lighting effects.

7. The lighting control method according to claim 1, characterized in that, The receiving microcontroller controls the RGB LED strip driver circuit by reading the lighting effect files in the lighting program memory. After receiving the input, the RGB LED strip driver circuit outputs three PWM high-voltage drive signals, and controls the lighting effect by controlling the switching of the RGB LED strip power supply.

8. The lighting control method according to claim 1, characterized in that, The lighting program memory can store multiple lighting effect files, which can be changed.

9. The method for determining the number of people or location according to claim 5, characterized in that, The receiving microcontroller can pre-select a lighting effect from the lighting program memory. When the number of people received by the receiving microcontroller is less than the minimum number of people threshold, or when no one enters the set location, the receiving microcontroller will output the selected lighting effect data.

10. The lighting control method according to claim 1, characterized in that, The power supply circuit of the millimeter-wave radar interactive terminal can accept a wide voltage input from 90V to 240V. An AC-DC power supply circuit is used to step down the voltage to 12V, which then powers the millimeter-wave radar. The microcontrollers at the receiving and transmitting ends, after receiving the 12V input processed by the AC-DC power supply circuit, use an LDO for linear regulation to obtain power inputs of 5V and 3.3V, respectively.

11. A lighting control system for ice and snow landscapes based on millimeter-wave radar personnel positioning, characterized in that, include: The millimeter-wave radar detector is used for personnel positioning and transmits the data to the main control system's transmitting end microcontroller. The transmitting end microcontroller receives radar data via the CAN bus, parses it to obtain information such as the number and location of personnel, and then sends the parsed data to the receiving end microcontroller. The receiving end microcontroller receives and analyzes data from the sending end, uses the number or location of people as the basis for controlling the changes in lighting effects, reads the lighting effect file from the lighting program memory, and outputs it. The RGB light strip driver circuit receives lighting effect data from the receiving end microcontroller and controls the RGB light strip. The RGB light strip receives control information and data from the RGB light strip driver circuit to achieve changes in lighting effects.

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