Vehicle blind area monitoring system and truck

Abstract

The invention discloses a vehicle blind area monitoring system and a truck, and relates to the technical field of automobile safety. The system comprises an electronic control device, a camera device, a projection device and a sensor. After a truck provided with the system is started, the camera device obtains a real-time video picture of a driving blind area of the truck; the sensor emits a detection signal outwards, receives a reflection signal after the detection signal is reflected by an obstacle, and generates an electric signal based on the reflection signal; the electronic control device processes the electric signal and determines the distance between the obstacle and the truck; when the distance is smaller than or equal to a preset distance threshold value, a driving signal is sent to the projection device; and after the projection device receives the driving signal, a real-time video picture of the driving blind area is displayed on a windshield of the truck. Therefore, the obstacle appearing in the driving blind area can be efficiently detected, the distance between the obstacle and the truck is smaller than or equal to the preset distance threshold value, and the obtained real-time picture with the obstacle is presented on the windshield of the truck.

Description

Technical Field

[0001] The present application relates to the field of automobile safety technology, and in particular to a vehicle blind spot monitoring system and a truck. Background Art

[0002] Due to the large size of the truck, the large tires and the high position of the cab, the driver faces great challenges when using the rearview mirror to monitor the surrounding environment of the vehicle. It is difficult to effectively detect obstacles (pedestrians or other vehicles) in the blind spot of the driver, which leads to frequent driving accidents. How to enable the driver to obtain information about obstacles in the blind spot of the driver efficiently and safely, thereby improving driving safety, has become one of the technical problems that need to be solved in the field of automotive safety technology. Summary of the invention

[0003] Based on the above problems, the present application provides a vehicle blind spot monitoring system for efficiently detecting obstacles in the driving blind spots and displaying real-time images of the obstacles to the truck driver, thereby improving driving safety.

[0004] The embodiments of the present application disclose the following technical solutions:

[0005] In a first aspect, the present application provides a vehicle blind spot monitoring system, comprising an electronic control device, a camera device, a projection device and a sensor; the camera device, the projection device and the sensor are all connected to the electronic control device for communication;

[0006] The camera device is used to obtain real-time video images of the truck's driving blind spot;

[0007] The sensor is used to transmit a detection signal, receive a reflection signal after the detection signal is reflected by an obstacle, and generate an electrical signal based on the reflection signal;

[0008] The electronic control device is used to process the electrical signal to determine the distance between the obstacle and the truck; when the distance is less than or equal to a preset distance threshold, send a driving signal to the projection device;

[0009] The projection device is used to present a real-time video image of the blind spot on the windshield of the truck after receiving the driving signal.

[0010] In an optional implementation, the driving blind zone includes a left driving blind zone and a right driving blind zone; the camera device includes a first camera device and a second camera device; the sensor includes a first sensor and a second sensor; the projection device includes a first projection device and a second projection device;

[0011] The first camera device is used to obtain a real-time video image of the left driving blind spot;

[0012] The second camera device is used to obtain a real-time video image of the right driving blind spot;

[0013] The first sensor is configured to transmit a first detection signal, receive a first reflection signal after the first detection signal is reflected by an obstacle in the left driving blind spot, and generate a first electrical signal based on the first reflection signal;

[0014] The second sensor is used to transmit a second detection signal, receive a second reflection signal after the second detection signal is reflected by the obstacle in the right driving blind spot, and generate a second electrical signal based on the second reflection signal;

[0015] The first projection device is used to present a real-time video image of the left driving blind spot on the windshield of the truck after receiving a first driving signal; the first driving signal is generated based on the first electrical signal;

[0016] The second projection device is used to present a real-time video image of the right driving blind spot on the windshield of the truck after receiving a second driving signal; the second driving signal is generated based on the second electrical signal.

[0017] In an optional implementation, the sensor is one of a lidar sensor, a millimeter wave radar sensor, an ultrasonic sensor, and an infrared sensor.

[0018] In an optional implementation, the first camera device is installed on the left door, left watertightness or left bumper of the outside of the truck; the second camera device is installed on the right door, right watertightness or right bumper of the outside of the truck.

[0019] In an optional implementation, the first sensor is deployed at the first camera device; and the second sensor is deployed at the second camera device.

[0020] In an optional implementation, the first projection device and the second projection device are deployed on the top of the interior of the front of the truck.

[0021] In an optional implementation, the electronic control device is integrated into a vehicle control unit of the truck.

[0022] In an optional implementation, the system further includes a voice prompt device; the voice prompt device is connected to the electronic control device;

[0023] The electronic control device is further used to send the driving signal to the voice prompt device;

[0024] The voice prompt device is used to provide voice prompt after receiving the driving signal.

[0025] In an optional implementation, the electronic control device includes a first electronic control module, a second electronic control module and a third control module;

[0026] The first electronic control module is used to process the electrical signal to determine the distance between the obstacle and the truck;

[0027] The second electronic control module is used to send a driving signal to the projection device when the distance is less than or equal to the preset distance threshold;

[0028] The third control module is used to send the driving signal to the voice prompt device when the distance is less than or equal to the preset distance threshold.

[0029] A second aspect of the present application provides a truck, the truck comprising the vehicle blind spot monitoring system according to any one of claims 1-9.

[0030] Compared with the prior art, this application has the following beneficial effects:

[0031] The present application discloses a vehicle blind spot monitoring system, including an electronic control device, a camera device, a projection device and a sensor; the camera device, the projection device and the sensor are all connected to the electronic control device in communication. After the truck equipped with the vehicle blind spot monitoring system is started, the camera device obtains the real-time video image of the truck's driving blind spot; the sensor transmits a detection signal to the outside, receives the reflected signal after the detection signal is reflected by the obstacle, and generates an electrical signal based on the reflected signal; the electronic control device processes the electrical signal to determine the distance between the obstacle and the truck; when the distance is less than or equal to the preset distance threshold, the projection device sends a driving signal; after receiving the driving signal, the projection device presents the real-time video image of the driving blind spot on the windshield of the truck. In this way, obstacles that appear in the driving blind spot and whose distance from the truck is less than or equal to the preset distance threshold can be efficiently detected, and the real-time image of the obstacle obtained by the camera device can be presented on the windshield of the truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1A schematic diagram of the structure of a vehicle blind spot monitoring system disclosed in this application;

[0034] Figure 2 A schematic diagram of the structure of another vehicle blind spot monitoring system provided in an embodiment of the present application;

[0035] Figure 3 A flowchart of a vehicle blind spot monitoring method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] Rearview mirrors are the main tool for drivers to observe the surrounding environment of the vehicle. There are certain driving blind spots (also called visual blind spots). Especially for large trucks with large volume, large tire size, and high cab position, simply using rearview mirrors to observe obstacles around the vehicle (pedestrians or other vehicles) will make it difficult to find obstacles in the driving blind spot in time when the truck changes lanes or turns, resulting in frequent driving accidents. How to help drivers efficiently and safely obtain information about obstacles in the driving blind spot and improve driving safety has become one of the technical issues that need to be solved in the field of automotive safety technology.

[0037] To facilitate understanding of the technical solutions in this application, the technical terms in this application are first explained.

[0038] A radar sensor is a sensor that uses radio waves for detection and ranging. It can measure information such as the distance, speed, direction, and size of an object.

[0039] Radar sensors include millimeter wave radar and laser radar. The working principle of millimeter wave radar is to transmit radio waves (radar waves / electromagnetic waves) and calculate parameters such as distance and speed based on the time difference between receiving the echo and sending it.

[0040] The working principle of lidar is to transmit a detection signal (laser beam) to the target, and then compare the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, relevant information about the target is obtained, such as target distance, direction, altitude, speed and other parameters.

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] Figure 1 This is a schematic diagram of the structure of a vehicle blind spot monitoring system disclosed in this application. Figure 1 As shown, the vehicle blind spot monitoring system 100 disclosed in the present application includes: a camera device 101, a sensor 102, an electronic control module 103 and a projection device 104. Among them, the camera device 101, the sensor 102 and the projection device 104 are all connected to the electronic control module 103 for communication. Specifically:

[0043] The camera device 101 is used to obtain real-time video images of the truck's driving blind spot;

[0044] The sensor 102 is used to transmit a detection signal, receive a reflected signal after the detection signal is reflected by an obstacle, and generate an electrical signal based on the reflected signal; the sensor is one of a millimeter wave radar sensor, an ultrasonic sensor, a laser radar sensor, and an infrared sensor;

[0045] The electronic control device 103 is used to process the electrical signal transmitted by the sensor 102 to determine the distance between the obstacle and the truck; when the distance is less than or equal to a preset distance threshold, send a driving signal to the projection device;

[0046] The projection device 104 is used to present a real-time video image of the driving blind spot on the windshield of the truck after receiving the driving signal transmitted by the electronic control device 103.

[0047] In an optional implementation, the vehicle blind spot monitoring system 100 in the present application may further include a voice prompting device, which is communicatively connected to the electronic control device 103 .

[0048] When the vehicle blind spot monitoring system 100 also includes a voice prompt module, the electronic control device 103 is specifically used to: process the electrical signal transmitted by the sensor 102 to determine the distance between the obstacle and the truck; when the distance is less than or equal to a preset distance threshold, send a driving signal to the projection device 104 and send a driving signal to the voice prompt module.

[0049] The voice prompt device is used to provide voice prompt after receiving the driving signal sent by the electronic control device 103.

[0050] Exemplarily, the voice prompt sent by the voice prompt device includes but is not limited to: please pay attention to obstacles in the left driver's blind spot or please pay attention to obstacles in the right driver's blind spot, etc.

[0051] In an optional implementation, the electronic control device 104 includes a first electronic control module, a second electronic control module and a third control module; wherein,

[0052] The first electronic control module is used to process the electrical signal to determine the distance between the obstacle and the truck;

[0053] The second electronic control module is used to send a driving signal to the projection device when the distance is less than or equal to the preset distance threshold;

[0054] The third control module is used to send the driving signal to the voice prompt device when the distance is less than or equal to the preset distance threshold.

[0055] It can be understood that after the truck equipped with the system is started, the camera device obtains the real-time video image of the truck's driving blind spot; the sensor transmits a detection signal to the outside, receives the reflected signal after the detection signal is reflected by the obstacle, and generates an electrical signal based on the reflected signal; the electronic control device processes the electrical signal to determine the distance between the obstacle and the truck; when the distance is less than or equal to the preset distance threshold, the projection device sends a driving signal; after receiving the driving signal, the projection device presents the real-time video image of the driving blind spot on the truck's windshield. In this way, obstacles that appear in the driving blind spot and are less than or equal to the preset distance threshold from the truck can be efficiently detected, and the acquired real-time image of the obstacle can be presented on the truck's windshield.

[0056] After the truck equipped with the system is started, the camera device obtains the real-time video image of the truck's driving blind spot; the sensor transmits a detection signal to the outside, receives the reflected signal after the detection signal is reflected by the obstacle, and generates an electrical signal based on the reflected signal; the electronic control device processes the electrical signal to determine the distance between the obstacle and the truck; when the distance is less than or equal to the preset distance threshold, the projection device sends a driving signal; after receiving the driving signal, the projection device presents the real-time video image of the driving blind spot on the truck's windshield. In this way, obstacles that appear in the driving blind spot and are less than or equal to the preset distance threshold from the truck can be efficiently detected, and the acquired real-time image of the obstacle can be presented on the truck's windshield.

[0057] For example, the distance threshold is set to 1.5 m in this application. Those skilled in the art can set the value of the distance threshold according to actual use requirements.

[0058] It should be emphasized that in this application, the real-time video image of the driving blind spot captured by the camera device is not presented on the windshield of the vehicle in real time. Only after an obstacle is detected in the driving blind spot and the distance from the truck is less than or equal to the preset distance threshold, the real-time image of the obstacle is presented on the windshield of the truck.

[0059] It is understandable that if the distance between the obstacle and the vehicle is far and will not cause driving safety problems, displaying real-time video images on the windshield of the vehicle all the time will distract the driver's attention; the method in the present application is to display real-time video images on the windshield of the vehicle when necessary, so that the driver can quickly obtain key information in the driving blind spot at the critical moment, effectively improving driving safety and efficiency, and will not distract the driver's attention.

[0060] For large trucks, there are two driving blind spots that must be paid special attention to, one is the left driving blind spot of the truck, and the other is the right driving blind spot of the truck. In order to efficiently detect both the left driving blind spot and the right driving blind spot of a large truck, the present application provides another vehicle blind spot monitoring system.

[0061] Figure 2 A schematic diagram of another vehicle blind spot monitoring system provided in an embodiment of the present application. Figure 2 As shown, another vehicle blind spot monitoring system 200 disclosed in the present application includes: a first camera device 201, a second camera device 202, a first sensor 203, a second sensor 204, an electronic control device 205, a first projection device 206 and a second projection device 207.

[0062] It can be understood that the first sensor 203 and the second sensor 204 can be one of a radar sensor, an ultrasonic sensor and an infrared sensor.

[0063] In an optional implementation, the first camera device 201 is installed on the left door, left watertight section or left bumper outside the truck; the second camera device 202 is installed on the right door, right watertight section or right bumper outside the truck.

[0064] In an optional implementation, the first sensor 203 is deployed at the first camera device 201 ; the second sensor 204 is deployed at the second camera device 202 .

[0065] In an optional implementation, the first projection device 206 and the second projection device 207 are deployed on the top of the interior of the front of the truck.

[0066] In an optional implementation, the electronic control device 205 is integrated into a vehicle control unit of the truck.

[0067] Figure 2 The functions of each module in the vehicle blind spot monitoring system 200 shown in FIG. 2 are as follows:

[0068] The first camera device 201 is used to obtain real-time video images of the left driving blind spot;

[0069] The second camera device 202 is used to obtain real-time video images of the right driving blind spot;

[0070] The first sensor 203 is used to transmit a first detection signal, receive a first reflection signal after the first detection signal is reflected by an obstacle in the left driving blind spot, and generate a first electrical signal based on the first reflection signal;

[0071] The second sensor 204 is used to transmit a second detection signal, receive a second reflection signal after the second detection signal is reflected by an obstacle in the right driving blind spot, and generate a second electrical signal based on the second reflection signal;

[0072] The electronic control device 205 is used to determine whether a first distance between the obstacle in the left driving blind spot and the truck is less than or equal to a preset distance threshold after receiving the first electrical signal based on the first electrical signal; when the first distance is less than or equal to the preset distance threshold, send a first drive signal to the first projection device 206; at the same time, after receiving the second electrical signal, determine whether a second distance between the obstacle in the right driving blind spot and the truck is less than or equal to the preset distance based on the second electrical signal, and when the second distance is less than or equal to the preset distance threshold, send a second drive signal to the second projection device 207;

[0073] The first projection device 206 is used to present a real-time video image of the left driving blind spot on the windshield of the truck after receiving the first driving signal;

[0074] The second projection device 207 is used to present a real-time video image of the right driving blind spot on the windshield of the truck after receiving the second driving signal.

[0075] It is understandable that for other blind spots of the vehicle, corresponding sensors, projection devices and camera devices may also be installed to achieve real-time monitoring of the blind spots.

[0076] It should be noted that during the normal operation of the vehicle blind spot monitoring system disclosed in the present application, the projection device is in a dormant state when it does not receive a driving signal sent by the electronic control device; after receiving a driving signal sent by the electronic control device, it is in an awake state and can project the real-time video image captured by the corresponding camera device onto the windshield of the truck.

[0077] Figure 3 A flowchart of a vehicle blind spot monitoring method provided in an embodiment of the present application. Figure 3 The vehicle blind spot monitoring method shown in is implemented by the vehicle blind spot monitoring system disclosed in this application. Figure 3 As shown, the vehicle blind spot monitoring method disclosed in the present application includes:

[0078] S301, after starting the vehicle, the vehicle blind spot monitoring system works.

[0079] The vehicle in this application is a truck equipped with a vehicle blind spot monitoring system. After starting the vehicle, each projection module in the vehicle blind spot monitoring system is in a dormant state; each camera module obtains a real-time video image of the corresponding blind spot.

[0080] S302, a sensor in the vehicle blind spot monitoring system transmits a detection signal to the outside, receives a reflected signal after the detection signal is reflected by an obstacle, and generates an electrical signal based on the reflected signal.

[0081] S303, the electronic control device in the vehicle blind spot monitoring system processes the received electrical signal, determines the distance between the obstacle and the truck, and determines whether the distance is less than or equal to a preset distance threshold.

[0082] If the distance between the obstacle and the truck is less than or equal to the preset distance threshold, the process proceeds to S304 ; otherwise, the process returns to S302 .

[0083] S304, the electronic control device in the vehicle blind spot monitoring system sends a driving signal to the projection device.

[0084] S305, the projection device in the vehicle blind spot monitoring system presents a real-time video image of the corresponding driving blind spot on the windshield of the truck.

[0085] by Figure 2 Taking the vehicle blind spot monitoring system shown in as an example, if the electronic control device sends a first drive signal, the first projection device projects the real-time video image of the left driving blind spot of the truck acquired by the first camera device onto the windshield; if the electronic control device sends a second drive signal, the second projection device projects the real-time video image of the right driving blind spot of the truck acquired by the second camera device onto the windshield; if the electronic control device sends the first drive signal and the second drive signal at the same time, the first projection device projects the real-time video image of the left driving blind spot of the truck acquired by the first camera device onto the windshield, and the second projection device projects the real-time video image of the right driving blind spot of the truck acquired by the second camera device onto the windshield.

[0086] From the introduction of the aforementioned embodiments, it can be seen that after installing a vehicle blind spot monitoring system on a large truck, the system can accurately determine the real-time distance between obstacles in the vehicle's blind spot and the truck; when the real-time distance is less than or equal to the preset distance threshold, the system immediately presents a real-time video image of the obstacle on the windshield of the truck, so that the driver can observe the situation in the driving blind spot without turning his head or adjusting his line of sight. The driver can efficiently and safely obtain obstacles that enter the vehicle's blind spot and are close to the truck, which can improve driving safety and reduce the probability of driving accidents.

[0087] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The method embodiment described above is merely schematic, in which the units described as separate components may or may not be physically separated, and the components indicated as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0088] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A vehicle blind spot monitoring system, characterized in that: It includes an electronic control device, a camera device, a projection device and a sensor; the camera device, the projection device and the sensor are all connected to the electronic control device for communication; The camera device is used to obtain real-time video images of the truck's driving blind spot; The sensor is used to transmit a detection signal, receive a reflection signal after the detection signal is reflected by an obstacle, and generate an electrical signal based on the reflection signal; The electronic control device is used to process the electrical signal to determine the distance between the obstacle and the truck; when the distance is less than or equal to a preset distance threshold, send a driving signal to the projection device; The projection device is used to present a real-time video image of the driving blind spot on the windshield of the truck after receiving the driving signal.

2. The system according to claim 1, characterized in that The driving blind area includes a left driving blind area and a right driving blind area; the camera device includes a first camera device and a second camera device; the sensor includes a first sensor and a second sensor; the projection device includes a first projection device and a second projection device; The first camera device is used to obtain a real-time video image of the left driving blind spot; The second camera device is used to obtain a real-time video image of the right driving blind spot; The first sensor is configured to transmit a first detection signal, receive a first reflection signal after the first detection signal is reflected by an obstacle in the left driving blind spot, and generate a first electrical signal based on the first reflection signal; The second sensor is used to transmit a second detection signal, receive a second reflection signal after the second detection signal is reflected by the obstacle in the right driving blind spot, and generate a second electrical signal based on the second reflection signal; The first projection device is used to present a real-time video image of the left driving blind spot on the windshield of the truck after receiving the first driving signal; The first driving signal is generated based on the first electrical signal; The second projection device is used to present a real-time video image of the right driving blind spot on the windshield of the truck after receiving the second driving signal; The second drive signal is generated based on the second electrical signal.

3. The system according to claim 1, characterized in that The sensor is one of a millimeter wave radar sensor, a laser radar sensor, an ultrasonic sensor and an infrared sensor.

4. The system according to claim 2, characterized in that The first camera device is installed on the left door, left watertight section or left bumper of the truck; the second camera device is installed on the right door, right watertight section or right bumper of the truck.

5. The system according to claim 2, characterized in that The first sensor is deployed at the first camera device; the second sensor is deployed at the second camera device.

6. The system according to claim 2, characterized in that The first projection device and the second projection device are deployed on the top of the interior of the front of the truck.

7. The system according to claim 1, characterized in that The electronic control device is integrated in a vehicle control unit of the truck.

8. The system according to claims 1-7, characterized in that: The system also includes a voice prompt device; the voice prompt device is connected to the electronic control device; The electronic control device is further used to send the driving signal to the voice prompt device; The voice prompt device is used to provide voice prompt after receiving the driving signal.

9. The system according to claim 8, characterized in that The electronic control device comprises a first electronic control module, a second electronic control module and a third control module; The first electronic control module is used to process the electrical signal to determine the distance between the obstacle and the truck; The second electronic control module is used to send a driving signal to the projection device when the distance is less than or equal to the preset distance threshold; The third control module is used to send the driving signal to the voice prompt device when the distance is less than or equal to the preset distance threshold.

10. A truck, characterized in that: The truck includes the vehicle blind spot monitoring system according to any one of claims 1-9.

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