Operation method based on radar detector and gate detection device

Abstract

This invention discloses an operation method based on a radar detector and a gate detection device thereof. The operation method is applied to a gate detection device having a signal transmitter, a signal receiver, and a processing unit. The operation method includes driving the signal transmitter to output a laser signal, using the signal receiver to obtain the reflected laser signal, analyzing the laser signal to compare it with a predetermined threshold, and determining whether to adjust an execution parameter of the signal transmitter and / or a gate judgment parameter applied to the gate detection device based on a comparison result between the laser signal and the predetermined threshold.

Description

Technical Field

[0001] This invention relates to an operating method and a gate detection device thereof, and more particularly to an operating method and a gate detection device for a radar detector based on an adjustable frequency. Background Technology

[0002] Traditional door detection devices typically utilize wireless signal detection technology to determine the open or closed state of a door. For example, infrared detectors can be programmed to position and angle the infrared beam to monitor the door's opening or closing mode; microwave detectors can monitor moving objects near the door and stationary objects in the door's path; radar detectors emit laser waves of a specific frequency, which hit a target object and return to the radar detector, allowing the calculation of the target object's position and speed. Radar detectors offer advantages such as high frequency, high resolution, and low sensitivity to environmental changes. However, traditional radar detectors operate at a fixed frequency, making them susceptible to interference from ambient electromagnetic waves and electromagnetic waves generated by other devices, often resulting in false alarms or missed detections. Therefore, designing a door detection device with better reliability and anti-interference capabilities is one of the key development topics for related industries. Summary of the Invention

[0003] The purpose of this invention is to provide an operation method for a radar detector based on an adjustable frequency and a gate detection device thereof, so as to solve the above-mentioned problems.

[0004] This invention provides an operation method based on a radar detector, applied to a segment detection device having a signal transmitter, a signal receiver, and a processing unit. The operation method includes driving the signal transmitter to output a laser signal, using the signal receiver to acquire the reflected laser signal, analyzing the laser signal and comparing it to a predetermined threshold, and determining whether to adjust an execution parameter of the signal transmitter and / or a segment judgment parameter applied to the segment detection device based on the comparison result between the laser signal and the predetermined threshold.

[0005] The present invention also provides a door segment detection device, which includes a signal transmitter, a signal receiver, and a processing unit. The signal transmitter is used to output a laser signal. The signal receiver is used to acquire the reflected laser signal. The processing unit is electrically connected to the signal transmitter and the signal receiver, and is used to drive the signal transmitter to output a laser signal, acquire the reflected laser signal using the signal receiver, analyze the laser signal to compare it with a predetermined threshold, and, based on the comparison result of the laser signal and the predetermined threshold, determine whether to adjust an execution parameter of the signal transmitter and / or a door segment judgment parameter applied to the door segment detection device.

[0006] The operating method and door segment detection device of this invention use a millimeter-wave radar detector with frequency modulation function as a signal transmitter. The processing unit can utilize an adaptive frequency adjustment algorithm or a spectrum analysis algorithm, and employ periodic or non-periodic calibration procedures as needed to identify environmental interference. Then, based on the echo intensity of the millimeter-wave radar detector, the frequency band and / or gain of the millimeter-wave radar detector are adjusted, or the frequency band with the least interference is directly selected and adjusted accordingly, or the door segment judgment parameters are adjusted to improve the detection accuracy of the door segment detection device. Compared with the prior art, the operating method and door segment detection device of this invention can make good use of the high-resolution characteristics of the millimeter-wave radar detector to achieve better detection accuracy, and can also dynamically adjust according to changes in application scenarios or weather conditions to provide reliable and accurate monitoring services. Attached Figure Description

[0007] Figure 1 This is a functional block diagram of the door panel detection device according to an embodiment of the present invention.

[0008] Figure 2 and Figure 3 This is a schematic diagram illustrating the application of the door panel detection device according to different embodiments of the present invention.

[0009] Figure 4 This is a flowchart of the operation method in the calibration stage according to an embodiment of the present invention.

[0010] Figure 5 This is a flowchart of the operation method in the application stage of an embodiment of the present invention.

[0011] Explanation of reference numerals in the attached drawings: 10-Door segment detection device; 12-Signal transmitter; 14-Signal receiver; 16-Processor; 18-Door segment; 20-Door frame; 22-Storage module; S100, S102, S104, S106, S108, S110, S112, S114, S116, S118, S120, S122, S124-Steps; S200, S202, S204, S206, S208, S210, S212-Steps. Detailed Implementation

[0012] Please see Figures 1 to 3 , Figure 1 This is a functional block diagram of the door panel detection device 10 according to an embodiment of the present invention. Figure 2 and Figure 3This is a schematic diagram illustrating the application of the door detection device 10 according to different embodiments of the present invention. The door detection device 10 may include at least a signal transmitter 12, a signal receiver 14, and a processing unit 16 electrically connected to each other. The signal transmitter 12 is used to output a laser signal, and the signal receiver 14 receives the laser signal reflected back from the target object (e.g., door panel 18 or door frame 20) after the laser signal is projected onto it. The processing unit 16 can execute the operating method of the present invention to improve the detection reliability and anti-interference capability of the door detection device 10.

[0013] The door detection device 10 can accurately determine the position and state of the door, but its practical applications are not limited to this. For example, the door detection device 10 can also be used to detect other types of moving or stationary objects, such as pedestrians, animals, and vehicles, depending on the application requirements. It can also estimate the movement path of objects by analyzing a series of detection data (e.g., determining whether a person is moving towards or away from the door). In this invention, the signal transmitter 12 is a millimeter-wave radar detector with frequency modulation function. Therefore, the door detection device 10 can dynamically adjust the operating frequency of the millimeter-wave radar detector to avoid external interference and optimize its detection performance. This significantly improves the anti-interference capability of the millimeter-wave radar detector and ensures that the door detection device 10 can maintain stable detection quality and accuracy even in environments with multiple interferences.

[0014] like Figure 2 As shown, the door panel 18 can rotate relative to the door frame 20 to present a closed state and an open state; the door panel detection device 10 can be optionally installed on the door panel 18 or inside an electronic lock (not shown in the figure) installed on the door panel 18, used to detect the relative position of the door frame 20 to provide a door panel position detection function. Or, as Figure 3 As shown, the door panel detection device 10 can also be optionally installed on the door frame 20 to detect the relative positional relationship of the door panels 18 to provide a door panel position detection function. The installation position of the door panel detection device 10 is not limited to the previously described embodiment, but depends on the design requirements, so other possible variations will not be described in detail here.

[0015] Please see Figure 4 , Figure 4 This is a flowchart of the operation method in the calibration stage according to an embodiment of the present invention. Figure 4 The described operation method is applicable to Figures 1 to 3The door panel detection device 10 shown above. Regarding the operation method of the calibration stage, steps S100 and S102 are first executed to drive the signal transmitter 12 to output a laser signal, and the signal receiver 14 acquires the reflected laser signal. Next, step S104 is selectively executed to perform filtering, amplification, and feature extraction processing on the reflected laser signal. Generally, when the intensity of the collected laser signal is high, the present invention performs filtering to remove noise and interference before amplifying the signal, which can protect the amplifier and reduce nonlinear distortion; if the intensity of the collected laser signal is low, amplification can be performed first, followed by filtering to avoid noise amplification. Feature extraction processing can obtain object detection results that describe the state of the target object (e.g., door panel 1 or door frame 20), such as reflection intensity, object distance, and object speed. Variations in the aforementioned signal processing depend on the signal characteristics and will not be described in detail here.

[0016] Next, step S106 is executed to analyze the laser signal to obtain signal quality. If the door detection device 10 uses a periodic calibration procedure, steps S108 and S110 are executed, whereby the signal-to-noise ratio and / or echo intensity of the laser signal are obtained as signal quality at each predetermined calibration cycle, and the signal quality is compared to a predetermined threshold. If the signal quality (i.e., signal-to-noise ratio and / or echo intensity) deviates from or exceeds the predetermined threshold signal threshold, it indicates that the poor signal quality will affect the detection accuracy of the door detection device 10. In this case, step S112 can be executed to adjust the execution parameters of the signal transmitter 12, such as frequency band and / or gain. If the signal quality does not deviate from or exceed the predetermined threshold signal threshold, it indicates that the signal quality is stable and the door detection device 10 still maintains appropriate detection accuracy. In this case, step S114 is executed without adjusting the frequency band and / or gain of the signal transmitter 12.

[0017] If the detection device 10 uses an irregular calibration procedure, steps S116 and S118 are executed to continuously obtain the trend of change in the signal-to-noise ratio and / or echo intensity of the laser signal, and the deviation of this trend from a predetermined threshold is taken as the signal quality. The signal quality is then compared to the predetermined threshold. If the signal quality (i.e., the deviation) deviates from or exceeds the predetermined threshold, it indicates that the poor signal quality will affect the detection accuracy of the door sensor 10. In this case, an automatic calibration mechanism is triggered to execute step S120, adjusting the execution parameters of the signal transmitter 12, such as the frequency band and / or gain. If the signal quality does not deviate from or exceed the predetermined threshold, it indicates that the signal quality is stable and the door sensor 10 still maintains appropriate detection accuracy. In this case, step S122 is executed without adjusting the frequency band and / or gain of the signal transmitter 12.

[0018] In the periodic calibration procedure of the operation method, the predetermined calibration cycle is determined according to the application requirements of the door detection device 10. For example, the door detection device 10 can be set to be calibrated daily, weekly, or monthly, but the actual application is not limited to this. In the periodic calibration procedure, the predetermined threshold can preferably be preset as a signal threshold, which can be a threshold value converted from the single error of the signal-to-noise ratio and / or echo intensity, or can be given other definitions according to design requirements. In the irregular calibration procedure of the operation method, the deviation result can be the cumulative deviation of the signal threshold whose trend deviates from the predetermined threshold; correspondingly, the predetermined threshold is preferably preset as a setting standard converted from the cumulative error of the signal-to-noise ratio and / or echo intensity. Finally, after adjusting the execution parameters of the signal transmitter 12 in steps S112 and S120, step S124 is executed to store the relevant data of the adjusted frequency band and / or gain in the storage module 22 of the door detection device 10, which can verify the stability and reliability of the relevant data in the subsequent door detection process.

[0019] Please see Figure 5 , Figure 5 This is a flowchart of the operation method in the application stage of an embodiment of the present invention. Figure 5 The described operation method is applicable to Figures 1 to 3 The door detection device 10 shown is described above. Regarding the operation method during the application phase, steps S200 and S202 are first executed to drive the signal transmitter 12 to output a laser signal, and the signal receiver 14 acquires the reflected laser signal. Next, step S204 is selectively executed to filter, amplify, and extract features from the reflected laser signal to obtain the object detection result. The object detected can be a door panel 18, a door frame 20, or a person, depending on the placement of the door detection device 10. The principles and functions of these signal processing steps have been described previously and will not be repeated here.

[0020] Next, step S206 is selectively executed, using a preset algorithm to analyze the object detection results provided by the laser signal to establish a door panel position model. This allows the door panel reference position to be obtained based on the door panel position model and used as the door panel judgment parameter for the door panel detection device 10. Step S206 is used to obtain the judgment threshold for the door panel position (e.g., the door panel judgment parameter). The operation method of this invention can use step S206 to obtain the door panel judgment parameter during the installation of the door panel detection device 10, eliminating the need for this step in subsequent use. Alternatively, the operation method of this invention can also selectively execute step S206 periodically or irregularly to calibrate the door panel judgment parameter, preventing the door panel 18 and / or door frame 20 from shifting positions due to prolonged use, thus affecting the detection accuracy of the door panel detection device 10.

[0021] To improve the detection accuracy of the door panel detection device 10, step S208 can be selectively executed. Without adjusting the execution parameters of the signal transmitter 12, the door panel reference position is adjusted to change the door panel judgment parameters of the door panel detection device 10. Next, step S210 is executed, comparing the object detection result provided by the laser signal with the door panel judgment parameters (corresponding to the aforementioned predetermined threshold) to determine the door panel position; the object detection result is the value calculated from the echo intensity of the laser signal. Finally, step S212 is executed, using a preset algorithm to analyze the difference between the object detection result and the door panel judgment parameters, obtaining the movement direction and / or position state of the target object (e.g., door panel 18 or door frame 20), thereby determining whether the door panel 18 is in a closed state (close to door frame 20) or an open state (away from door frame 20).

[0022] In summary, the operating method and door segment detection device of this invention use a millimeter-wave radar detector with frequency modulation function as a signal transmitter. The processing unit can utilize adaptive frequency adjustment algorithms or spectrum analysis algorithms, and employ periodic or non-periodic calibration procedures as needed to identify environmental interference. Then, based on the echo intensity of the millimeter-wave radar detector, the frequency band and / or gain of the millimeter-wave radar detector are adjusted, or the frequency band with the least interference is directly selected and adjusted accordingly, or the door segment judgment parameters are adjusted to improve the detection accuracy of the door segment detection device. Compared to existing technologies, the operating method and door segment detection device of this invention can make good use of the high-resolution characteristics of the millimeter-wave radar detector to achieve better detection accuracy, and can also dynamically adjust according to changes in application scenarios or weather conditions to provide reliable and accurate monitoring services.

[0023] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made in accordance with the claims of the present invention should be included within the scope of the present invention.

Claims

1. An operation method based on a radar detector, applied to a chip detection device having a signal transmitter, a signal receiver, and a processing unit, characterized in that, This operation method includes: The processor drives the signal transmitter to output a laser signal and uses the signal receiver to obtain the reflected laser signal. The processor analyzes the laser signal compared to a predetermined threshold; and The processor determines whether to adjust an execution parameter of the signal transmitter and / or a gate judgment parameter applied to the gate detection device based on a comparison result between the laser signal and the predetermined threshold.

2. The operating method as described in claim 1, characterized in that, Also includes: The processor analyzes the laser signal to obtain a signal quality; The processor confirms whether the signal quality meets the predetermined threshold; and When the signal quality exceeds the predetermined threshold, the processor automatically adjusts a frequency band and / or a gain of the execution parameters.

3. The operating method as described in claim 2, characterized in that, The execution parameters for automatically adjusting the signal transmitter include: The processor acquires a signal-to-noise ratio and / or an echo intensity of the laser signal as the signal quality at each predetermined correction cycle; and When the processor determines that the signal-to-noise ratio and / or the echo intensity deviate from the predetermined threshold, it adjusts the frequency band and / or the gain of the signal transmitter.

4. The operating method as described in claim 2, characterized in that, The execution parameters for automatically adjusting the signal transmitter include: The processor continuously acquires a trend of change in the signal-to-noise ratio and / or the echo intensity of the laser signal; The processor calculates the deviation of the change trend from the predetermined threshold as the signal quality; and When the processor determines that the deviation exceeds a predetermined threshold, it adjusts the frequency band and / or the gain of the signal transmitter.

5. The operating method as described in claim 4, characterized in that, The deviation result is the cumulative deviation of the trend of change from a predetermined threshold signal threshold.

6. The operating method as described in claim 2, characterized in that, Also includes: The processor stores the adjusted frequency band and / or gain data in a storage module of the gate detection device.

7. The operating method as described in claim 1, characterized in that, Also includes: The processor performs filtering and amplification on the laser signal; and The processor extracts feature parameters from the processed laser signal to obtain an object detection result.

8. The operating method as described in claim 7, characterized in that, Also includes: The processor uses a preset algorithm to analyze the object detection results to obtain a door panel reference position as the door panel judgment parameter.

9. The operating method as described in claim 8, characterized in that, The processor adjusts the reference position of the gate segment to improve the accuracy of the gate segment detection device without adjusting the execution parameters of the signal transmitter.

10. The operating method as described in claim 7, characterized in that, Also includes: The processor uses a preset algorithm to analyze the object detection results and the door panel judgment parameters to obtain a motion direction and / or a position state of a target object.

11. The operating method as described in claim 1, characterized in that, The signal transmitter is a millimeter-wave radar with frequency modulation capability.

12. A door panel detection device, characterized in that, Includes: A signal transmitter used to output a laser signal; A signal receiver is used to acquire the reflected laser signal; and An arithmetic processor, electrically connected to the signal transmitter and the signal receiver, is used to perform the operation method as described in any one of claims 1 to 11.

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