Radar sensing device, lighting control system and lighting control method and device
Patent Information
- Application Number
- CN202311870125.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-07-01
Smart Images
Figure CN120239145A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electronic circuits, and in particular, to a radar sensing device, an illumination control system, an illumination control method, and a device thereof. Background Art
[0002] If a traditional always-on lighting fixture is used in a public lighting system, the fixture is not only prone to damage and requires frequent replacement, but also consumes a lot of electricity, which is a very troublesome problem. Now, only a microwave radar induction switch is needed to turn an always-on fixture into an induction lamp instantly, thus achieving energy saving.
[0003] Microwaves are radio waves with a very short wavelength but good directivity, and their speed is nearly the speed of light. When a microwave radar encounters an object, it will be reflected back and received by the microwave radar module and antenna. This round trip takes only a fraction of a second, on the order of a few hundred thousandths of a second. When a person or object moves within the sensing range of the microwave radar, the sensor will be activated. However, microwaves are also easily interfered with by the movement of biological organisms or objects such as air conditioners, cars, and mosquitoes, resulting in false triggering. Summary of the Invention
[0004] The present invention provides a radar sensing device, an illumination control system, an illumination control method, and a device thereof to solve the problem that induction lamps in the prior art are easily mis-triggered.
[0005] The present invention provides a radar sensing device, including:
[0006] A main controller for outputting a voltage control signal based on a received frequency point adjustment control instruction;
[0007] A radio frequency local oscillator circuit for outputting a first radio frequency signal with a target frequency according to the voltage control signal and sending the first radio frequency signal to a radio frequency transmitting circuit;
[0008] The radio frequency transmitting circuit for receiving the first radio frequency signal and transmitting the first radio frequency signal to at least one object to be measured within the sensing range of the radar sensing device;
[0009] A radio frequency receiving circuit for receiving second radio frequency signals respectively reflected by the at least one object to be measured;
[0010] The main controller is further configured to determine a mapping relationship between the frequency of the second radio frequency signal and the at least one object to be measured, and the mapping relationship is used to determine the type of the object to be measured.
[0011] In some embodiments, the main controller is specifically configured to:
[0012] Perform segmented processing on the second radio frequency signal to obtain a segmented radio frequency signal;
[0013] Perform normalization processing on the segmented radio frequency signal to obtain a normalized radio frequency signal;
[0014] Convert the normalized radio frequency signal into the frequency domain to obtain frequency domain data;
[0015] Based on the trained XGBoost algorithm model, classify the frequency domain data to determine the corresponding mapping relationship, and the mapping relationship is used to determine the type of the object under test.
[0016] In some embodiments, the first radio frequency signal is a 24 GHz microwave signal.
[0017] The present invention also provides an illumination control system, including an illumination device and the radar sensing device as described above, and the radar sensing device is connected to the illumination device.
[0018] The present invention also provides an illumination control method, which is applied to the illumination control system as described above, and the method includes:
[0019] Based on the radio frequency signal detected by the radar sensing device, determine the type of the object under test corresponding to the radio frequency signal;
[0020] When the type of the object under test is a target object, adjust the illumination parameters of the illumination device.
[0021] In some embodiments, the determining the object under test corresponding to the radio frequency signal based on the radio frequency signal detected by the radar sensing device includes:
[0022] Input the radio frequency signal into the trained XGBoost algorithm model to determine the type of the object under test corresponding to the radio frequency signal;
[0023] Wherein, the trained XGBoost algorithm model is trained based on the radio frequency signal sample data corresponding to different objects respectively, and the radio frequency signal sample data is collected based on the radar sensing device.
[0024] In some embodiments, the illumination parameters include at least one of the following:
[0025] Switch state, brightness, and color.
[0026] The present invention also provides an illumination control device, which is applied to the illumination control system as described above, and the device includes:
[0027] A determination module, configured to determine the object under test corresponding to the radio frequency signal based on the radio frequency signal detected by the radar sensing device;
[0028] A control module, configured to adjust the lighting parameters of the lighting device when the object under test is the target object.
[0029] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the lighting control method described in any one of the above is implemented.
[0030] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the lighting control method described in any one of the above is implemented.
[0031] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, the lighting control method described in any one of the above is implemented.
[0032] The radar sensing device, lighting control system, lighting control method and device provided by the present invention can determine the mapping relationship between the frequency of the second radio frequency signal and different objects under test through the second radio frequency signals respectively reflected by different objects under test, so that the type of the object under test corresponding to the reflected radio frequency signal can be distinguished through the mapping relationship, and it can be used to solve the anti-interference against common interference objects. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0034] Figure 1 is a schematic structural diagram of the radar sensing device provided by the present invention;
[0035] Figure 2 is a schematic diagram of the decomposition of the time-domain signal to frequency provided by the present invention;
[0036] Figure 3 is a schematic structural diagram of the lighting control system provided by the present invention;
[0037] Figure 4 is a schematic flowchart of the lighting control method provided by the present invention;
[0038] Figure 5 is a schematic structural diagram of the lighting control device provided by the present invention;
[0039] Figure 6 is a schematic structural diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0040] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.
[0041] In the related art, a microwave induction switch detects whether the position of an object moves in a non-contact manner according to the Doppler effect, and then generates corresponding switch operations. Compared with infrared induction, microwave is an active induction. The microwave radar intelligently detects the surrounding electromagnetic environment and automatically adjusts the working state of the lighting system. The built-in integrated filtering circuit can effectively suppress the interference of high-order harmonics and other clutter. It has high sensitivity, strong reliability, safety, convenience, and intelligent energy saving, and is a new and practical energy-saving device. This device has strong anti-radio frequency interference ability and is not affected by temperature, humidity, light, air flow, dust, etc. It can be installed in many non-metallic enclosures without affecting its detection function, and can be conveniently applied to various fields such as equipment control, environmental auxiliary light source control, underground parking lots, and passage lighting. It can be paired with various ordinary lamps to become a radar microwave induction lamp.
[0042] The following will be combined with Figures 1-6 Describe the radar induction device, lighting control system, lighting control method and device of the present invention.
[0043] Figure 1 It is a schematic structural diagram of the radar induction device provided by the present invention. Referring to Figure 1 The lighting control device provided by the present invention includes:
[0044] The main controller 10 is configured to output a voltage control signal based on the received frequency point adjustment control instruction;
[0045] The radio frequency local oscillator circuit 20 is configured to output a first radio frequency signal with a target frequency according to the voltage control signal and send the first radio frequency signal to the radio frequency transmission circuit;
[0046] The radio frequency transmission circuit 30 is configured to receive the first radio frequency signal and transmit the first radio frequency signal to at least one object to be measured within the sensing range of the radar induction device;
[0047] The radio frequency receiving circuit 40 is configured to receive second radio frequency signals respectively reflected by different objects to be measured;
[0048] The main controller 10 is further configured to determine the mapping relationship between the frequency of the second radio frequency signal and different objects to be measured, and the mapping relationship is used to determine the type of the object to be measured.
[0049] In actual implementation, the output end of the main controller 10 is connected to the input end of the radio frequency local oscillator circuit 20, the output end of the radio frequency local oscillator circuit 20 is connected to the input end of the radio frequency transmitting circuit 30, and the output end of the radio frequency receiving circuit 40 is connected to the input end of the main controller 10.
[0050] In some embodiments, the main controller 10 may be a microprocessor such as a single-chip microcomputer, a digital signal processor (DSP), and a field programmable gate array (FPGA).
[0051] The main controller 10 may integrate some hardware circuits and software programs or algorithms to implement the control of the radio frequency local oscillator circuit 20. The main controller 10 may receive an input frequency point adjustment control instruction. After receiving the frequency point adjustment control instruction, the main controller 10 converts the frequency point adjustment control instruction into a corresponding voltage control signal.
[0052] The radio frequency local oscillator circuit 20 may output radio frequency signals of different frequencies according to the voltage control signal output by the main controller 10 and transmit them after passing through the radio frequency transmitting circuit 30.
[0053] After receiving the first radio frequency signal, the radio frequency transmitting circuit 30 transmits the first radio frequency signal to at least one object to be measured within the sensing range of the radar sensing device, and the radio frequency receiving circuit 40 receives second radio frequency signals respectively reflected by at least one object to be measured.
[0054] It can be understood that if the motion states of different objects to be measured are different, the reflected second radio frequency signals are also different.
[0055] The main controller 10 is used to establish a mathematical relationship between the radio frequency signal and different objects to be measured, that is, to determine the mapping relationship between the frequency of the second radio frequency signal and at least one object to be measured. The object to be measured may be one or more.
[0056] In actual implementation, after establishing the mapping relationship, the type of the object to be measured can be directly determined from the radio frequency signals detected by the radar sensing device, so as to facilitate the distinction between interfering objects and non-interfering objects.
[0057] For example: Hang the radar sensing device at a certain height and collect data in a specific environment. Establish or find an environment with different interfering objects (interfering objects that the radar sensing device is expected to avoid misjudging, such as mosquitoes, air conditioners, cars, or trees, etc.), including data collection environments with different interfering objects, such as environments where mosquitoes are likely to appear in summer, etc., and it can also be an environment where there are people within the sensing range. After determining the mapping relationship between the radio frequency signals reflected by different interfering objects and the interfering objects themselves, the type of the object to be measured can be determined conversely according to this mapping relationship.
[0058] It should be noted that the present invention can detect the presence of a human body by the frequency of human movement being within a specific range, such as between the normal walking speed and running speed of a human body.
[0059] The radar sensing device provided by the present invention can determine the mapping relationship between the frequency of the second radio frequency signal and different objects to be measured through the second radio frequency signals respectively reflected by different objects to be measured, so that the type of the object to be measured corresponding to the reflected radio frequency signal can be distinguished through the mapping relationship, and it can be used to solve the anti-interference of common interfering objects.
[0060] In some embodiments, the main controller 10 is specifically configured to:
[0061] Perform segmentation processing on the second radio frequency signal to obtain the segmented radio frequency signal;
[0062] Perform normalization processing on the segmented radio frequency signal to obtain the normalized radio frequency signal;
[0063] Convert the normalized radio frequency signal into the frequency domain to obtain frequency domain data;
[0064] Based on the trained XGBoost algorithm model, classify the frequency domain data to determine the mapping relationship corresponding to the frequency domain data, and the mapping relationship is used to determine the type of the object to be measured.
[0065] In actual execution, the main controller 10 segments the collected second radio frequency signal. For example, 1024 data are collected every 50 ms, and after normalization processing, it is transferred to the frequency domain to obtain frequency domain data.
[0066] As Figure 2 shown, the time domain signal can be transferred to the frequency domain through the Fast Fourier Transform (FFT), that is, the frequency of the second radio frequency signal is determined.
[0067] Establish a classification model for different objects to be measured based on the XGBoost algorithm model.
[0068] It should be noted that Boosting is a serial learning method. For a set of data, several models are first established. These learners generally use relatively simple algorithms, called base models. Arrange these base models in a series. First, train the first base model. According to the learning results of this model, adjust the training set, increase the weights of the samples with incorrect model output results, and then train the next base model, and so on, until all the base models are trained. Finally, assign different weights to these base models to perform the classification task. The above description is the basic working process of Boosting. From the perspective of bias-variance decomposition, Boosting mainly focuses on reducing the deviation rate bias. Even if the performance of the base model is quite weak, as long as it is stronger than random guessing (such as a probability greater than 50%), a very strong generalization performance integrated model can be obtained.
[0069] The objective function of the XGBoost algorithm model is as follows:
[0070]
[0071] Among them, x i represents the i-th sample in the training dataset, l represents the loss function for model training, Ω(f m ) represents the complexity of the model, and constant represents a constant. The loss function can be defined according to actual needs.
[0072] Performing a Taylor expansion on formula (1), we get:
[0073]
[0074] represents the predicted value of the i-th sample, y i represents the true label value, and ω(f t ) represents the complexity of the model at the t-th iteration.
[0075] h i and g i are respectively expressed as:
[0076]
[0077] Among them, h i is the first derivative, and g i is the second derivative, both of which are known numbers that can be calculated.
[0078] To minimize the objective function, the constants irrelevant to the optimization problem are removed. At step t, the objective is as shown in the following formula:
[0079]
[0080] Export the trained XGBoost algorithm model to form a C language module and integrate it into the embedded project.
[0081] In some embodiments, the first radio frequency signal is a 24 GHz microwave signal.
[0082] In actual implementation, microwaves are radio waves with very short wavelengths but good directivity, and their speed is nearly the speed of light. When a microwave radar encounters an object, it will be reflected back and received by the microwave radar module and antenna.
[0083] The first radio frequency signal adopted in the present invention is a 24 GHz microwave signal. In the prior art, the frequency difference between the transmitted and received signals is mainly used to calculate the speed of the object through a formula, that is, it is mainly applied to speed measurement. The present invention does not directly use the microwave signal for speed measurement, but uses a radar sensing device to collect the microwave signals reflected by different objects to be measured in advance.
[0084] For example: It is possible to collect the microwave signals under interference objects such as air conditioners, cars, leaves or mosquitoes, and the microwave signals in the normal presence state of the human body. The human body in a static state can be detected by a 24G radar to detect breathing, etc. The movement rules of the human body in a moving state are very different from the movement rules of other organisms such as mosquitoes.
[0085] The radar sensing device provided by the present invention can be widely applied to products such as induction lighting, small household appliances, smart homes, automatic control switches, and greeters, as well as places that require automatic induction control such as garages, corridors, stairways, courtyards, balconies, restrooms, and security. When someone enters the sensing area and meets the lighting requirements, the radar sensing device automatically starts to work, the load electrical appliance starts to work, and a delay system is started. As long as the human body does not leave the sensing area, the load electrical appliance will continue to work. When the human body leaves the sensing area, the sensor starts to calculate the delay. After the delay ends, the sensor switch automatically closes and the load electrical appliance stops working. It truly achieves safety, convenience, intelligence, and energy saving.
[0086] The present invention can be used to solve the anti-interference against common interference objects, thereby reducing the occurrence of false triggering problems caused by common objects.
[0087] Figure 3 It is a schematic structural diagram of the lighting control system provided by the present invention. Refer to Figure 3 , the lighting control system provided by the present invention includes: a lighting device 320 and the radar sensing device 310 in the above embodiments, and the radar sensing device 310 is connected to the lighting device 320.
[0088] In actual implementation, the radar sensing device 310 and the lighting device 320 can be used in combination. For example, the radar sensing device 310 can be designed as a microwave induction switch, and when paired with the lighting device 320, it can form a radar microwave induction lamp.
[0089] The lighting control system provided by the present invention analyzes the radio frequency signals reflected by objects and organisms that are likely to cause false triggering by collecting and analyzing them in advance, stores and memorizes this interference information in a certain way in advance, and when the lighting control system is actually deployed in a specific usage environment, it can actively filter the interference objects analyzed in advance, thereby greatly reducing the generation of false triggering.
[0090] Figure 4 It is a schematic flowchart of the lighting control method provided by the present invention. Referring to Figure 4 , the lighting control method provided by the present invention is applied to the lighting control system in the above embodiment and includes:
[0091] Step 410: Determine the type of the measured object corresponding to the radio frequency signal based on the radio frequency signal detected by the radar sensing device;
[0092] Step 420: Adjust the lighting parameters of the lighting device when the type of the measured object is the target object.
[0093] It should be noted that the execution subject of the lighting control method provided by the present invention can be an electronic device, a component in the electronic device, an integrated circuit, or a chip. The electronic device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a notebook computer, a handheld computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and the non-mobile electronic device can be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The present invention does not make specific limitations.
[0094] Next, taking the electronic device executing the lighting control method provided by the present invention as an example, the technical solution of the present invention will be described in detail.
[0095] In actual execution, the lighting control system can be applied in a specific environment, for example, it can be an environment with different interference objects or an environment with non-interference objects. For example: a human body is a non-interference object.
[0096] In a radar sensing device, a mapping relationship between radio frequency signals and {human body, interference objects} is pre-established. According to this mapping relationship, the type of the measured object corresponding to the radio frequency signal can be determined, and then it can be determined whether the measured object is a target object, and the target object can be set as a non-interference object.
[0097] When the measured object is a non-interference object, the lighting parameters of the lighting device are adjusted.
[0098] In some embodiments, the lighting parameters include at least one of the following:
[0099] Switch state, brightness, and color.
[0100] It should be noted that the switch state includes the on state and the off state of the lighting device.
[0101] Brightness refers to the brightness of the light emitted when the lighting device is in the on state.
[0102] Color refers to the color of the light emitted when the lighting device is in the on state.
[0103] When the measured object is a non-interference object, the lighting parameters can be adjusted according to the actual situation. For example: the brightness of the light can be increased, or it can be adjusted to a light with a brighter color, or the lighting device can be directly adjusted to the on state.
[0104] It can be understood that when the measured object is a non-interference object or an interference object, different lighting parameters can be set respectively, so that the type of the measured object can be distinguished by the light. For example: when the measured object is an interference object, the brightness of the light can be reduced, or it can be adjusted to a light with a darker color, or the lighting device can be directly adjusted to the off state.
[0105] Thus, different lighting parameters can be set according to the type of the measured object, which can make the lighting device in a more energy-saving state.
[0106] The lighting control method provided by the present invention can be used to solve the anti-interference against common interference objects, thereby reducing the occurrence of false triggering problems of lighting devices caused by common interference objects.
[0107] In some embodiments, step 110 may include:
[0108] Input the radio frequency signal into the trained XGBoost algorithm model to determine the type of the measured object corresponding to the radio frequency signal;
[0109] Among them, the trained XGBoost algorithm model is trained based on the radio frequency signal sample data corresponding to different objects, and the radio frequency signal sample data is collected based on the above-mentioned radar sensing device.
[0110] In actual implementation, the radar sensing device classifies radio frequency signals through the trained XGBoost algorithm model. The XGBoost algorithm model has been described in the above embodiments and will not be elaborated here. The XGBoost algorithm model can be used to establish classification models corresponding to non-interference objects and interference objects.
[0111] The lighting control device provided by the present invention will be described below. The lighting control device described below can be mutually corresponding and referred to the lighting control method described above.
[0112] Figure 5 is a schematic structural diagram of the lighting control device provided by the present invention. Refer to Figure 5 , the lighting control device provided by the present invention is applied to the lighting control system in the above embodiment and includes:
[0113] A determination module 510, configured to determine a measured object corresponding to the radio frequency signal based on the radio frequency signal detected by the radar sensing device;
[0114] A control module 520, configured to adjust lighting parameters of the lighting device when the measured object is a target object.
[0115] The lighting control device provided by the present invention can be used to solve anti-interference against common interference objects, thereby reducing the problem of mis-triggering of lighting devices caused by common interference objects.
[0116] In some embodiments, the determination module 510 is specifically configured to:
[0117] Input the radio frequency signal into the trained XGBoost algorithm model to determine the type of the measured object corresponding to the radio frequency signal;
[0118] Wherein, the trained XGBoost algorithm model is trained based on radio frequency signal sample data corresponding to different objects respectively, and the radio frequency signal sample data is collected based on the radar sensing device.
[0119] In some embodiments, the lighting parameters include at least one of the following:
[0120] Switch state, brightness, and color.
[0121] Figure 6 Illustrates a schematic physical structure diagram of an electronic device, such as Figure 6As shown in the figure, the electronic device may include: a processor 610, a communications interface 620, a memory 630, and a communication bus 640. Among them, the processor 610, the communications interface 620, and the memory 630 communicate with each other through the communication bus 640. The processor 610 can call the logical instructions in the memory 630 to execute a lighting control method, which is applied to a lighting control system. The method includes:
[0122] Based on the radio frequency signal detected by the radar sensing device, determine the type of the measured object corresponding to the radio frequency signal;
[0123] When the type of the measured object is a target object, adjust the lighting parameters of the lighting device.
[0124] In addition, when the logical instructions in the above-mentioned memory 630 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical disks, and other various media that can store program codes.
[0125] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the lighting control method provided by the above-mentioned various methods. The method is applied to a lighting control system. The method includes:
[0126] Based on the radio frequency signal detected by the radar sensing device, determine the type of the measured object corresponding to the radio frequency signal;
[0127] When the type of the measured object is a target object, adjust the lighting parameters of the lighting device.
[0128] In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements a lighting control method provided by the above-mentioned various methods, which is applied to a lighting control system. The method includes:
[0129] Based on the radio frequency signal detected by the radar sensing device, determine the type of the measured object corresponding to the radio frequency signal;
[0130] When the type of the measured object is a target object, adjust the lighting parameters of the lighting device.
[0131] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.
[0132] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.
[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A radar sensing device, characterized in that, Including: A main controller, configured to output a voltage control signal based on a received frequency point adjustment control instruction; A radio frequency local oscillator circuit, configured to output a first radio frequency signal with a target frequency according to the voltage control signal and send the first radio frequency signal to a radio frequency transmission circuit; The radio frequency transmission circuit is configured to receive the first radio frequency signal and transmit the first radio frequency signal to at least one object to be measured within the sensing range of the radar sensing device; A radio frequency receiving circuit, configured to receive second radio frequency signals respectively reflected by the at least one object to be measured; The main controller is further configured to determine a mapping relationship between the frequency of the second radio frequency signal and the at least one object to be measured, and the mapping relationship is used to determine the type of the object to be measured.
2. The radar induction device according to claim 1, wherein Specifically, the main controller is configured to: Perform segmentation processing on the second radio frequency signal to obtain a segmented radio frequency signal; Perform normalization processing on the segmented radio frequency signal to obtain a normalized radio frequency signal; Convert the normalized radio frequency signal into a frequency domain to obtain frequency domain data; Based on a trained XGBoost algorithm model, classify the frequency domain data to determine the mapping relationship corresponding to the frequency domain data, and the mapping relationship is used to determine the type of the object to be measured.
3. The radar induction device according to claim 1 or 2, characterized in that, The first radio frequency signal is a 24 GHz microwave signal.
4. A lighting control system, characterized in that, Including a lighting device and the radar sensing device according to any one of claims 1-3, and the radar sensing device is connected to the lighting device.
5. A lighting control method, characterized in that, Applied to the lighting control system according to claim 4, the method includes: Based on the radio frequency signal detected by the radar sensing device, determine the type of the object to be measured corresponding to the radio frequency signal; When the type of the object to be measured is a target object, adjust the lighting parameters of the lighting device.
6. The lighting control method according to claim 5, wherein The determining the object to be measured corresponding to the radio frequency signal based on the radio frequency signal detected by the radar sensing device includes: Inputting the radio frequency signal into a trained XGBoost algorithm model to determine the type of the object to be measured corresponding to the radio frequency signal; Wherein, the trained XGBoost algorithm model is trained based on radio frequency signal sample data corresponding to different objects respectively, and the radio frequency signal sample data is collected based on the radar sensing device.
7. The lighting control method according to claim 5 or 6, characterized in that, The lighting parameters include at least one of the following: Switch state, brightness, and color.
8. An illumination control device, characterized in that, Applied to the lighting control system according to claim 4, the device includes: A determining module, configured to determine the object to be measured corresponding to the radio frequency signal based on the radio frequency signal detected by the radar sensing device; A control module, configured to adjust the lighting parameters of the lighting device when the object to be measured is a target object.
9. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the lighting control method according to any one of claims 5-7.
10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the lighting control method according to any one of claims 5-7.