Obstacle detection device and system

Abstract

The utility model relates to the technical field of obstacle detection, and discloses an obstacle detection device and system. The obstacle detection device comprises an infrared receiving and transmitting device, an infrared receiving device and a controller. The infrared transceiver is configured to emit an infrared detection signal to a detection space and receive an infrared reflection signal and / or an ambient light signal existing in the detection space; the infrared receiving device is configured to receive an ambient light signal existing in the detection space; and the control module is configured to calculate a signal difference value between the optical signals received by the infrared receiving and transmitting device and the infrared receiving device and obtain a corresponding obstacle detection result according to the signal difference value. According to the embodiment of the invention, the obstacle detection precision based on infrared sensing can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of obstacle detection, and in particular to an obstacle detection device and system. BACKGROUND

[0002] Infrared sensing technology is widely used in various environmental monitoring and control systems, especially in the fields of transportation and security. However, in practical applications, infrared sensors are often disturbed by environmental light, which often leads to misjudgment of infrared sensors and affects the stability and accuracy of the system. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide an obstacle detection device and system, which aims to reduce the interference of environmental light on infrared sensing detection, so as to improve the accuracy of obstacle detection based on infrared sensing.

[0004] The present application provides an obstacle detection device, comprising:

[0005] An infrared transceiver device configured to emit an infrared detection signal to a detection space and receive an infrared reflection signal and / or an environmental light signal existing in the detection space;

[0006] An infrared receiving device configured to receive an environmental light signal existing in the detection space;

[0007] A control module connected to the infrared transceiver device and the infrared receiving device, configured to calculate a signal difference between the light signals received by the infrared transceiver device and the infrared receiving device, and obtain a corresponding obstacle detection result according to the signal difference.

[0008] In some embodiments, the control module is configured to obtain an obstacle detection result that there is an obstacle when the signal difference is in a signal value interval, and an obstacle detection result that there is no obstacle when the signal difference is not in the signal value interval.

[0009] In some embodiments, the control module is configured to perform obstacle ranging according to the time difference between emitting the infrared detection signal and receiving the infrared reflection signal.

[0010] In some embodiments, the infrared transceiver device and the infrared receiving device are arranged in a spaced manner, and the signal transmission and reception direction of the infrared transceiver device is parallel to the signal reception direction of the infrared receiving device.

[0011] In some embodiments, the control module comprises:

[0012] The master control unit is connected with the infrared transceiver and the infrared receiver, and is configured to make the infrared transceiver emit an infrared detection signal to the detection space, calculate the signal difference value, and obtain a corresponding obstacle detection result according to the signal difference value.

[0013] The communication unit is connected with the master control unit, and is configured to make the master control unit communicate with the outside.

[0014] The embodiment of the present application also provides an obstacle detection system, which comprises:

[0015] A server;

[0016] The obstacle detection device is in communication with the server, and is configured to upload the obstacle detection result to the server.

[0017] The present application has the following beneficial effects: the infrared transceiver configured to emit an infrared detection signal to the detection space and the infrared detector configured to only receive an ambient light signal in the detection space are adopted, the signal difference value between the light signals received by the infrared transceiver and the infrared receiver is calculated, and it is determined whether the infrared transceiver receives an infrared reflection signal according to the signal difference value, so as to determine whether there is an obstacle in the detection space. Since the combination of the infrared transceiver and the infrared detector is adopted, the signal difference value between the infrared transceiver receiving the infrared reflection signal and the infrared detector not receiving the infrared reflection signal can be accurately identified, and the interference of the scattered and mixed infrared signals contained in the detection space on the obstacle detection is eliminated, and the obstacle detection precision based on the infrared sensing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a structural schematic diagram of an obstacle detection device provided by the embodiment of the present application.

[0019] Figure 2 Fig. 2 is an application scenario diagram of the obstacle detection device provided by the embodiment of the present application.

[0020] Figure 3 Fig. 3 is a structural schematic diagram of an obstacle detection system provided by the embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0022] It should be noted that the terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a system, product or device including a series of circuits does not have to be limited to only those circuits clearly listed, but can include other circuits not clearly listed or inherent to these systems, products or devices.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0024] The embodiments of the present application provide an obstacle detection device.

[0025] In combination with reference to Figure 1 and Figure 2 In one embodiment, the obstacle detection device includes an infrared transmitting and receiving device 10, an infrared receiving device 20 and a control module 30, and the control module 30 is connected to the infrared transmitting and receiving device 10 and the infrared receiving device 20, respectively. Wherein the infrared transmitting and receiving device 10 is configured to emit an infrared detection signal to a detection space and receive an infrared reflection signal and / or an ambient light signal existing in the detection space, the infrared receiving device 20 is configured to receive an ambient light signal existing in the detection space, and the control module 30 is configured to calculate a signal difference between the light signals received by the infrared transmitting and receiving device 10 and the infrared receiving device 20 and obtain a corresponding obstacle detection result according to the signal difference.

[0026] The infrared transceiver 10 emits an infrared detection signal to the detection space upon receiving an instruction to emit the infrared detection signal. The infrared detection signal is reflected in the detection space to obtain an infrared reflection signal. After emitting the infrared detection signal, the infrared transceiver 10 detects the infrared reflection signal present in the detection space. Since there can be ambient light signals in the detection space, the infrared transceiver 10 receives the infrared reflection signal and / or the ambient light signal present in the detection space and sends them to the control module 30. The infrared receiver 20 detects the ambient light signal present in the detection space and sends the received ambient light signal to the control module 30. The control module 30 can issue an instruction to the infrared transceiver 10 to emit the infrared detection signal and monitor the infrared transceiver 10 and the infrared receiver 20 in real time to obtain the light signals received by both the infrared transceiver 10 and the infrared receiver 20, thereby calculating the signal difference between the light signals received by the infrared transceiver 10 and the infrared receiver 20 and obtaining the corresponding obstacle detection result.

[0027] In actual application, the control module 30 realizes obstacle detection according to the infrared reflection signal of the infrared transceiver 10 and the ambient light signal received by the infrared receiver 20. In specific implementation, the control module 30 issues an instruction to the infrared transceiver 10 to emit the infrared detection signal, so that the infrared transceiver 10 emits the infrared detection signal to the detection space. The infrared transceiver 10 detects the infrared reflection signal obtained after the emission of the infrared detection signal in the detection space. If the infrared reflection signal exists, the light signal received by the infrared transceiver 10 contains the infrared reflection signal and the ambient light signal present in the detection space or only contains the infrared reflection signal. If the infrared reflection signal does not exist, the light signal received by the infrared transceiver 10 contains the ambient light signal. At the same time, the infrared receiver 20 detects the ambient light signal present in the detection space in real time. The control module 30 obtains the light signals received by both the infrared transceiver 10 and the infrared receiver 20, calculates the signal difference between the light signals received by the infrared transceiver 10 and the infrared receiver 20, and obtains the obstacle detection result of the presence of an obstacle when the signal difference meets the occlusion detection condition, and obtains the obstacle detection result of the absence of an obstacle when the signal difference does not meet the occlusion detection condition.

[0028] In one embodiment, the control module 30 is configured to obtain an obstacle detection result of presence of an obstacle when the signal difference value is in the signal value interval and an obstacle detection result of absence of an obstacle when the signal difference value is not in the signal value interval. In a specific implementation, the control module 30 calculates the signal difference value between the light signals received by the infrared transmitting and receiving device 10 and the infrared receiving device 20, compares the calculated signal difference value with the signal threshold value, and obtains an obstacle detection result of presence of an obstacle and performs obstacle ranging when the signal difference value is in the signal value interval defined by the signal threshold value, and obtains an obstacle detection result of absence of an obstacle when the signal difference value is not in the signal value interval defined by the signal threshold value. It can be understood that when performing obstacle detection, ambient light (such as sunlight and artificial light) in the detection space irradiating to the infrared transmitting and receiving device 10 can cause the light signal received by the infrared transmitting and receiving device 10 to contain infrared signals other than the infrared reflection signal, and therefore, by the control module 30 calculating the signal difference value between the light signals received by the infrared transmitting and receiving device 10 and the infrared receiving device 20, the signal value of the signal difference value is theoretically equal to the signal value of the infrared reflection signal when the infrared transmitting and receiving device 10 receives the infrared reflection signal, that is, whether the infrared transmitting and receiving device 10 receives the infrared reflection signal can be determined by judging whether the signal difference value is in the signal value interval of the signal value of the infrared reflection signal, so as to determine whether there is an obstacle.

[0029] In one embodiment, the control module 30 is configured to perform obstacle ranging according to the time difference between the emitted infrared detection signal and the received infrared reflection signal. In a specific implementation, when obtaining an obstacle detection result of presence of an obstacle, the control module 30 calculates the time difference between the emitted infrared detection signal and the received infrared reflection signal, and calculates the distance between the obstacle detection device and the obstacle in combination with the speed of light.

[0030] In one embodiment, the infrared transmitting and receiving device 10 and the infrared receiving device 20 are arranged in a spaced manner, and the signal transmitting and receiving direction of the infrared transmitting and receiving device 10 is parallel to the signal receiving direction of the infrared receiving device 20, so as to ensure that the infrared transmitting and receiving device 10 and the infrared receiving device 20 are simultaneously affected by ambient light in the same direction, thereby improving detection accuracy.

[0031] In one embodiment, the control module 30 includes a master control unit 31 and a communication unit 32, the master control unit 31 is connected to the infrared transmitting and receiving device 10 and the infrared receiving device 20, and the communication unit 32 is connected to the master control unit 31. The master control unit 31 is configured to cause the infrared transmitting and receiving device 10 to emit an infrared detection signal to the detection space, calculate a signal difference value, and obtain a corresponding obstacle detection result according to the signal difference value, and the communication unit 32 is configured to cause the master control unit 31 to communicate with the outside.

[0032] The embodiment of the present application also provides an obstacle detection system.

[0033] Referring to Figure 3 In one embodiment, the obstacle detection system comprises the server 40 and the obstacle detection device in the above embodiment, and the obstacle detection device communicates with the server 40. The obstacle detection device is configured to upload the obstacle detection result to the server 40.

[0034] In summary, the obstacle detection device and system provided by the embodiment of the present application are configured to emit the infrared detection signal to the detection space through the infrared transceiver device and receive the ambient light signal in the detection space through the infrared detector device. The signal difference between the light signals received by the infrared transceiver device and the infrared detector device is calculated, and it is determined whether the infrared transceiver device receives the infrared reflection signal according to the signal difference, so as to determine whether there is an obstacle in the detection space. Since the combination of the infrared transceiver device and the infrared detector device is adopted, the signal difference between the infrared transceiver device receiving the infrared reflection signal and the infrared detector device not receiving the infrared reflection signal can be accurately identified, and the interference of the scattered infrared signal contained in the detection space on the obstacle detection is eliminated, and the obstacle detection accuracy based on the infrared sensing is improved.

[0035] It should be understood that, in the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And / or" is used to describe the association between the associated objects, which means that there can be three relationships, for example, "A and / or B" can represent three cases of only A, only B, and A and B existing at the same time, wherein A and B can be singular or plural. The character " / " generally represents that the associated objects before and after are in an "or" relationship. "At least one of the following" or the like means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b or c can represent a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, and c can be single or multiple.

[0036] The preferred embodiments of the embodiments of the present application are described above with reference to the accompanying drawings, and are not limited to the scope of the embodiments of the present application. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of the embodiments of the present application.

Claims

1. An obstacle detection device, characterized by, The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server.

2. The obstacle detection device according to claim 1, characterized in that, The application relates to an obstacle detection device and a server.

3. The obstacle detection device according to claim 1, characterized in that, The application relates to an obstacle detection device and a server.

4. The obstacle detection device of claim 1, wherein The application relates to an obstacle detection device and a server.

5. The obstacle detection device of claim 1, wherein The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server.

6. An obstacle detection system characterized by, The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a server. The application relates to an obstacle detection device and a

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