Infrared anti-blocking detection device, method and system resistant to ambient light interference

Abstract

The present invention discloses an infrared anti-blocking detection device, method and system that are resistant to ambient light interference, wherein the device includes: a first infrared sensor module, used to generate an infrared signal transmitted to a target object, and detect a reflected signal reflected by the target object; a second infrared sensor module, used to monitor a light change signal in the environment where the target object is located; a main control module, used to calculate the signal difference between the reflected signal and the light change signal, judge whether the target object is blocked based on the signal difference, and output the judgment result to an external device. The present invention can effectively eliminate the influence of sunlight by setting up dual infrared sensors and monitoring the difference between the two sensors in real time, ensuring that targets such as billboards and road signs can be accurately detected under different lighting conditions, enhancing the accuracy of blockage detection, reducing misjudgment and missed judgment, and can be applied under conditions such as strong light and shadow, and can adapt to various complex external environments.

Description

Technical Field

[0001] The present invention relates to the field of infrared sensing technology, and more specifically, to an infrared anti-shielding detection device, method and system that are resistant to ambient light interference. Background Art

[0002] Infrared sensing technology is widely used in various environmental monitoring and control systems, especially in the fields of transportation, security, etc.

[0003] At present, in practical applications, infrared sensors are interfered by ambient light, which often leads to false judgments by the infrared sensors, thus affecting the stability and accuracy of detection. Therefore, an effective technical means is urgently needed to offset the interference of ambient light and improve the reliability and accuracy of infrared anti-blocking systems. Summary of the invention

[0004] The purpose of the present invention is to provide an infrared anti-obstruction detection device, method and system that are resistant to ambient light interference. By setting up dual infrared sensors and monitoring the difference between the two sensors in real time, the influence of sunlight can be effectively eliminated, ensuring that targets such as billboards and road signs can be accurately detected under different lighting conditions, enhancing the accuracy of obstruction detection, reducing misjudgment and missed judgment, and can be used under conditions such as strong light and shadow, and can adapt to various complex external environments.

[0005] A first aspect of the present invention provides an infrared anti-shielding detection device resistant to ambient light interference, comprising: A first infrared sensor module is used to generate an infrared signal transmitted to a target object and detect a reflected signal reflected back from the target object; A second infrared sensor module is used to monitor light change signals in the environment where the target object is located; The main control module is used to calculate the signal difference between the reflection signal and the light change signal, determine whether the target object is blocked based on the signal difference, and output the determination result to an external device.

[0006] In this solution, the target object includes a preset marker, wherein the marker is a billboard and / or a road sign.

[0007] In this solution, the first infrared sensor module supports transmitting signals and receiving signals, and the second infrared sensor module only supports receiving signals.

[0008] In this scheme, judging whether the target object is obscured based on the signal difference specifically includes comparing the relationship between the signal difference and the target threshold to obtain the judgment result, wherein the target threshold is a dynamically updated value, which is dynamically updated based on different lighting conditions in the environment where the target object is located.

[0009] In this solution, the external device includes a server, wherein the main control module transmits data with the server via network communication or Bluetooth broadcast communication.

[0010] The third aspect of the present invention further provides an infrared anti-blocking detection method resistant to ambient light interference, which is applied to any of the infrared anti-blocking detection devices resistant to ambient light interference, wherein the method comprises the following steps: Using a preset first infrared sensor module to generate an infrared signal to be transmitted to a target object, and transmitting the infrared signal to the outside; Detecting a reflected signal reflected by a target object, and monitoring a light change signal of an environment where the target object is located using a preset second infrared sensor module; A signal difference between the reflection signal and the light change signal is calculated, and based on the signal difference, whether the target object is blocked is determined, and the determination result is output to an external device.

[0011] In this solution, the target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located to determine whether the signal difference is within the range of the target threshold. If the signal difference is within the range of the target threshold, the judgment result is unobstructed, otherwise it is obstructed.

[0012] The third aspect of the present invention further provides an infrared anti-blocking detection system resistant to ambient light interference, comprising a memory and a processor, wherein the memory comprises an infrared anti-blocking detection method program resistant to ambient light interference, and when the infrared anti-blocking detection method program resistant to ambient light interference is executed by the processor, the following steps are implemented: Using a preset first infrared sensor module to generate an infrared signal to be transmitted to a target object, and transmitting the infrared signal to the outside; Detecting a reflected signal reflected by a target object, and monitoring a light change signal of an environment where the target object is located using a preset second infrared sensor module; A signal difference between the reflection signal and the light change signal is calculated, and based on the signal difference, whether the target object is blocked is determined, and the determination result is output to an external device.

[0013] In this solution, the target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located to determine whether the signal difference is within the range of the target threshold. If the signal difference is within the range of the target threshold, the judgment result is unobstructed, otherwise it is obstructed.

[0014] The fourth aspect of the present invention provides a computer-readable storage medium, which includes a program of an infrared anti-obstruction detection method for a machine that is resistant to ambient light interference. When the program of the infrared anti-obstruction detection method for a machine that is resistant to ambient light interference is executed by a processor, the steps of an infrared anti-obstruction detection method for a machine that is resistant to ambient light interference as described in any one of the above items are implemented.

[0015] The present invention discloses an infrared anti-obstruction detection device, method and system that are resistant to ambient light interference. By setting up dual infrared sensors and monitoring the difference between the two sensors in real time, the influence of sunlight can be effectively eliminated, ensuring that targets such as billboards and road signs can be accurately detected under different lighting conditions, thereby enhancing the accuracy of obstruction detection, reducing misjudgment and missed judgment, and can be applied under conditions such as strong light and shadow, and can adapt to various complex external environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure diagram of an infrared anti-shielding detection device resistant to ambient light interference of the present invention is shown; Figure 2 A flow chart of an infrared anti-shielding detection method for resisting ambient light interference according to the present invention is shown; Figure 3 A block diagram of an infrared anti-shielding detection system resistant to ambient light interference of the present invention is shown. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0019] At present, ambient light, especially sunlight, has a great influence on infrared sensors, which can easily lead to misdetection. The present invention aims to improve the anti-interference ability of infrared sensors in sunlight environments. By combining two infrared sensors and using the signal difference comparison method, the interference of sunlight can be effectively removed, thereby improving the detection reliability of the system in sunlight environments.

[0020] At the same time, billboards, road signs and other signs may cause fluctuations in reflected signals when sunlight changes. By comparing the difference between the real-time signal of the sensor and the reflected signal of the occlusion detection sensor, the present invention can efficiently identify whether the target object is obscured, optimize the accurate detection of obstructions, and avoid misjudgment caused by environmental changes or light problems. Among them, the present invention uses two infrared sensor comparison signal processing methods to ensure that high-precision detection capabilities can be maintained under different ambient light conditions such as daytime, night and transition periods, thereby making the present invention suitable for various application scenarios. Whether it is under strong sunlight during the day or in artificial lighting environments at night, it can effectively detect whether facilities such as billboards or road signs are obscured, thereby enhancing adaptability and ensuring error-free operation around the clock.

[0021] Figure 1 The structure diagram of an infrared anti-shielding detection device resistant to ambient light interference of the present application is shown.

[0022] like Figure 1 As shown, the present application discloses an infrared anti-shielding detection device resistant to ambient light interference, comprising: A first infrared sensor module is used to generate an infrared signal transmitted to a target object and detect a reflected signal reflected back from the target object; A second infrared sensor module is used to monitor light change signals in the environment where the target object is located; The main control module is used to calculate the signal difference between the reflection signal and the light change signal, determine whether the target object is blocked based on the signal difference, and output the determination result to an external device.

[0023] It should be noted that, in this embodiment, Figure 1 As shown, the target object includes a preset marker, wherein the marker is a billboard and / or a road sign, and the first infrared sensor module supports transmitting and receiving signals. Specifically, the sensor in the first infrared sensor module integrates transmitting and receiving functions, and is used to generate infrared signals and detect the reflected signals of the target object. The second infrared sensor only supports receiving signals. Specifically, the sensor in the second infrared sensor module does not participate in the transmission, and is only responsible for receiving the ambient light signal as a comparison. The sensor in the second infrared sensor module is used to monitor the changes in the external ambient light, and provide a reference signal for the subsequent main control module to calculate the difference, thereby eliminating the interference of sunlight. Specifically, two infrared sensors are used in this embodiment, one for transmitting and receiving signals, and the other only for receiving. The signal difference between the received signals of the two is used for occlusion detection, which can effectively avoid the interference of sunlight and ensure the accurate judgment of the occlusion of the target object.

[0024] Furthermore, the main control module is used to calculate the signal difference between the reflection signal and the light change signal, so as to judge whether the target object is blocked based on the signal difference. Specifically, judging whether the target object is blocked based on the signal difference includes comparing the relationship between the signal difference and the target threshold to obtain the judgment result, and outputting the judgment result to an external device, wherein the target threshold is a dynamically updated value, which is dynamically updated based on different lighting conditions in the environment where the target object is located, so as to better adapt to different environmental requirements. By real-time monitoring the difference between the two sensor signals, when the ambient light intensity changes, it is possible to judge whether there is any obstruction based on the signal difference. By using this method set in the present embodiment, the impact of sunlight changes can be reduced, ensuring accurate detection of obstructions and avoiding false alarms. Further, as Figure 1 As shown, the external device includes a server, wherein the main control module transmits data with the server via network communication or Bluetooth broadcast communication.

[0025] It should be noted that the infrared anti-blocking detection device for resisting ambient light interference described in this embodiment uses dual infrared sensors to work together when applied, and realizes accurate anti-blocking detection through processes such as signal acquisition, difference calculation, blockage judgment and dynamic adjustment. In order to cope with changes in ambient light, a dynamic adjustment mechanism is adopted, which can update the threshold in real time to ensure the accuracy of the detection result, and output the detection result through the communication interface to achieve all-weather reliable detection. The sensor in the first infrared sensor module is responsible for emitting infrared signals and receiving the reflected signal of the target object, and the sensor in the first infrared sensor module synchronously receives the sunlight signal. The main control module collects the signal values ​​of the two modules in real time, calculates the difference, and determines whether there is blockage according to the range of the preset target threshold. Finally, the data is transmitted to the server through the network or Bluetooth broadcast, and the platform performs corresponding operations. Among them, only the implementation method of anti-interference is considered in this embodiment, and the transmission part with the server is not explained.

[0026] Figure 2 A flow chart of an infrared anti-shielding detection method resistant to ambient light interference of the present application is shown.

[0027] like Figure 2 As shown, the present application discloses an infrared anti-blocking detection method that is resistant to ambient light interference, comprising the following steps: S202, using a preset first infrared sensor module to generate an infrared signal to be transmitted to a target object, and transmitting the infrared signal to the outside; S204, detecting a reflection signal reflected by the target object, and monitoring a light change signal of an environment where the target object is located by using a preset second infrared sensor module; S206, calculating a signal difference between the reflection signal and the light change signal, determining whether the target object is blocked based on the signal difference, and outputting the determination result to an external device.

[0028] It should be noted that, in the present embodiment, the infrared anti-obstruction detection method described is a control method applied to the infrared anti-obstruction detection device resistant to ambient light interference described in the above embodiments, wherein specifically, firstly, two groups of sensors are arranged in the infrared anti-obstruction detection device resistant to ambient light interference, including a first infrared sensor module and a second infrared sensor module, and therefore, sensor groups with different functions are controlled separately, specifically, firstly, an infrared signal transmitted to a target object is generated by a preset first infrared sensor module, and the infrared signal is transmitted to the outside, wherein the sensor in the first infrared sensor module supports dual functions of receiving and transmitting, and then the reflected signal reflected back by the target object is detected, and the light change signal of the environment in which the target object is located is monitored by a preset second infrared sensor module, wherein the sensor in the set second infrared sensor module only supports the receiving function.

[0029] Furthermore, the signal difference between the reflection signal and the light change signal is calculated, and whether the target object is blocked is determined based on the signal difference. The specific determination of whether it is blocked is based on the range distribution of the signal difference and the dynamic target threshold, which will be explained in detail in the subsequent content. Finally, after determining whether the target object is blocked, the judgment result is output to the external device, and the output method is to transmit data with the corresponding server through network communication or Bluetooth broadcast communication.

[0030] According to an embodiment of the present invention, the target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located to determine whether the signal difference is within the range of the target threshold. If the signal difference is within the range of the target threshold, the judgment result is unobstructed, otherwise it is obstructed.

[0031] It should be noted that, in this embodiment, it is specifically explained how to determine whether the target object is obscured. Specifically, since the target threshold is dynamically updated, the target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located. After obtaining the target threshold, it is necessary to determine whether the signal difference is within the range of the target threshold. Specifically, if the signal difference is within the range of the target threshold, the judgment result is not obscured, otherwise it is obscured.

[0032] Figure 3 A block diagram of an infrared anti-shielding detection system resistant to ambient light interference of the present invention is shown.

[0033] like Figure 3As shown, the present invention discloses an infrared anti-blocking detection system resistant to ambient light interference, comprising a memory and a processor, wherein the memory comprises an infrared anti-blocking detection method program resistant to ambient light interference, and when the infrared anti-blocking detection method program resistant to ambient light interference is executed by the processor, the following steps are implemented: Using a preset first infrared sensor module to generate an infrared signal to be transmitted to a target object, and transmitting the infrared signal to the outside; Detecting a reflected signal reflected by a target object, and monitoring a light change signal of an environment where the target object is located using a preset second infrared sensor module; A signal difference between the reflection signal and the light change signal is calculated, and based on the signal difference, whether the target object is blocked is determined, and the determination result is output to an external device.

[0034] It should be noted that, in the present embodiment, the infrared anti-obstruction detection method described is a control method applied to the infrared anti-obstruction detection device resistant to ambient light interference described in the above embodiments, wherein specifically, firstly, two groups of sensors are arranged in the infrared anti-obstruction detection device resistant to ambient light interference, including a first infrared sensor module and a second infrared sensor module, and therefore, sensor groups with different functions are controlled separately, specifically, firstly, an infrared signal transmitted to a target object is generated by a preset first infrared sensor module, and the infrared signal is transmitted to the outside, wherein the sensor in the first infrared sensor module supports dual functions of receiving and transmitting, and then the reflected signal reflected back by the target object is detected, and the light change signal of the environment in which the target object is located is monitored by a preset second infrared sensor module, wherein the sensor in the set second infrared sensor module only supports the receiving function.

[0035] Furthermore, the signal difference between the reflection signal and the light change signal is calculated, and whether the target object is blocked is determined based on the signal difference. The specific determination of whether it is blocked is based on the range distribution of the signal difference and the dynamic target threshold, which will be explained in detail in the subsequent content. Finally, after determining whether the target object is blocked, the judgment result is output to the external device, and the output method is to transmit data with the corresponding server through network communication or Bluetooth broadcast communication.

[0036] According to an embodiment of the present invention, the target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located to determine whether the signal difference is within the range of the target threshold. If the signal difference is within the range of the target threshold, the judgment result is unobstructed, otherwise it is obstructed.

[0037] It should be noted that, in this embodiment, it is specifically explained how to determine whether the target object is obscured. Specifically, since the target threshold is dynamically updated, the target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located. After obtaining the target threshold, it is necessary to determine whether the signal difference is within the range of the target threshold. Specifically, if the signal difference is within the range of the target threshold, the judgment result is not obscured, otherwise it is obscured.

[0038] A fourth aspect of the present invention provides a computer-readable storage medium, which includes a program for an infrared anti-obstruction detection method that is resistant to ambient light interference. When the program for an infrared anti-obstruction detection method that is resistant to ambient light interference is executed by a processor, the steps of an infrared anti-obstruction detection method that is resistant to ambient light interference as described in any one of the above items are implemented.

[0039] The present invention discloses an infrared anti-obstruction detection device, method and system that are resistant to ambient light interference. By setting up dual infrared sensors and monitoring the difference between the two sensors in real time, the influence of sunlight can be effectively eliminated, ensuring that targets such as billboards and road signs can be accurately detected under different lighting conditions, thereby enhancing the accuracy of obstruction detection, reducing misjudgment and missed judgment, and can be applied under conditions such as strong light and shadow, and can adapt to various complex external environments.

[0040] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0041] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0042] In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0043] A person of ordinary skill in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0044] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

Claims

1. An infrared anti-blocking detection device resistant to ambient light interference, characterized in that: The device comprises: A first infrared sensor module is used to generate an infrared signal transmitted to a target object and detect a reflected signal reflected back from the target object; A second infrared sensor module is used to monitor light change signals in the environment where the target object is located; The main control module is used to calculate the signal difference between the reflection signal and the light change signal, determine whether the target object is blocked based on the signal difference, and output the determination result to an external device.

2. The infrared anti-shielding detection device resistant to ambient light interference according to claim 1, characterized in that: The target object includes a preset marker, wherein the marker is a billboard and / or a road sign.

3. The infrared anti-shielding detection device resistant to ambient light interference according to claim 1, characterized in that: The first infrared sensor module supports transmitting signals and receiving signals, and the second infrared sensor module only supports receiving signals.

4. The infrared anti-shielding detection device resistant to ambient light interference according to claim 1, characterized in that: Judging whether the target object is obscured based on the signal difference specifically includes comparing the relationship between the signal difference and the target threshold to obtain the judgment result, wherein the target threshold is a dynamically updated value, which is dynamically updated based on different lighting conditions in the environment where the target object is located.

5. The infrared anti-shielding detection device resistant to ambient light interference according to claim 1, characterized in that: The external device includes a server, wherein the main control module performs data transmission with the server via network communication or Bluetooth broadcast communication.

6. An infrared anti-blocking detection method resistant to environmental interference, characterized in that: The infrared anti-blocking detection device against ambient light interference as claimed in any one of claims 1 to 5, wherein the method comprises the following steps: Using a preset first infrared sensor module to generate an infrared signal to be transmitted to a target object, and transmitting the infrared signal to the outside; Detecting a reflected signal reflected by a target object, and monitoring a light change signal of an environment where the target object is located using a preset second infrared sensor module; A signal difference between the reflection signal and the light change signal is calculated, and based on the signal difference, whether the target object is blocked is determined, and the determination result is output to an external device.

7. The infrared anti-shielding detection method against environmental interference according to claim 6, characterized in that: The target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located, and it is determined whether the signal difference is within the range of the target threshold. If the signal difference is within the range of the target threshold, the judgment result is unobstructed, otherwise it is obstructed.

8. An infrared anti-blocking detection system resistant to environmental interference, characterized in that: The invention comprises a memory and a processor, wherein the memory comprises an infrared anti-shielding detection method program for resisting environmental interference, and the infrared anti-shielding detection method program for resisting environmental interference is executed by the processor to implement the following steps: Using a preset first infrared sensor module to generate an infrared signal to be transmitted to a target object, and transmitting the infrared signal to the outside; Detecting a reflected signal reflected by a target object, and monitoring a light change signal of an environment where the target object is located using a preset second infrared sensor module; A signal difference between the reflection signal and the light change signal is calculated, and based on the signal difference, whether the target object is blocked is determined, and the determination result is output to an external device.

9. The infrared anti-shielding detection system resistant to environmental interference according to claim 8, characterized in that: The target threshold is dynamically updated based on the lighting conditions of the environment in which the target object is located, and it is determined whether the signal difference is within the range of the target threshold. If the signal difference is within the range of the target threshold, the judgment result is unobstructed, otherwise it is obstructed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes an infrared anti-obstruction detection method program that is resistant to environmental interference. When the infrared anti-obstruction detection method program that is resistant to environmental interference is executed by a processor, the steps of an infrared anti-obstruction detection method that is resistant to environmental interference as described in any one of claims 6 to 7 are implemented.

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