CN204956372U - Driving recorder based on vehicle CAN bus and ADAS system - Google Patents

Abstract

The utility model discloses a driving recording device based on a vehicle CAN bus and an ADAS system. The driving recording device comprises: a CAN bus information module, a central processing module, a camera, a video decoding module, an alarm module, and an image display module; a CAN bus information module The input end of the vehicle is connected to the CAN bus of the vehicle; the output end of the CAN bus information processing module, the camera, the video decoding module, and the alarm module are all connected to the central processing module; the input end of the image display module is connected to the output end of the video decoding module. The utility model can directly obtain the vehicle bus information, and then obtain the real-time state of the vehicle. The central processing module adopts the ADAS analysis system to analyze according to the vehicle state and the video images collected by the camera, so that the reversing assistance and lane departure can be performed more accurately and in real time. Reminders, pedestrian passing reminders, safe vehicle distance driving reminders. The utility model can be widely used in the field of intelligent transportation.

Description

A driving recording device based on vehicle CAN bus and ADAS system

technical field

The utility model relates to the field of intelligent transportation, more specifically, relates to a driving recording device based on a vehicle CAN bus and an ADAS system.

Background technique

CAN: ControllerAreaNetwork, controller area network, was developed by German BOSCH company, which is famous for R&D and production of automotive electronic products, and eventually became an international standard (ISO11898), which is one of the most widely used field buses in the world.

Advanced Driver Assistant System (Advanced Driver Assistant System), referred to as ADAS, is to use various sensors installed on the car to collect environmental data inside and outside the car in the first time, and to identify, detect and track static and dynamic objects. Active safety technology that allows the driver to detect possible dangers in the fastest time to attract attention and improve safety.

In modern automobiles, ADAS technology has become a hot spot in intelligent transportation in recent years. ADAS applications are generally divided into two levels: one is the visual assistance system, including the reversing display function, etc.; the second is the driving warning/assistance system, covering the lane departure system, etc. For the former, the image processor of the visual assistance system only needs to have image correction and display functions, while for the driving warning/assistance system, it must be able to perform image recognition, which is a level of technical difficulty. Most of the driving recording devices integrated with ADAS algorithms sold in the aftermarket currently detect signals such as the vehicle’s reversing level, and the vehicle’s driving speed is obtained based on the built-in GPS chip, so that the acquisition of vehicle status is accurate, real-time, and stable. Sexually very bad.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a driving recording device with higher real-time performance and stability.

The technical scheme that the utility model adopts is as follows:

A driving recording device based on a vehicle CAN bus and an ADAS system, the driving recording device comprising: a CAN bus information module, a central processing module, a camera, a video decoding module, an alarm module, and an image display module; wherein the CAN bus information The input terminal of the module is connected with the CAN bus of the vehicle for obtaining the CAN bus signal of the vehicle; the output terminal of the CAN bus information processing module is connected with the central processing module; the camera, the video decoding module and the alarm module are all connected with the The central processing module is connected; the input end of the image display module is connected with the output end of the video decoding module.

Specifically, the CAN bus information module includes a CAN bus information transceiver unit, a CAN bus control unit, and a CAN bus information processing unit, wherein the input of the CAN bus information transceiver unit is connected to the vehicle CAN bus; the CAN bus information The output end of the transceiver unit is connected with the input end of the CAN bus control unit; the output end connected with the CAN bus control unit is connected with the input end of the CAN bus information processing unit; the output end of the CAN bus information processing unit Connect with the central processing module. Specifically, the central processing module adopts an ADAS system integrated chip.

Specifically, the CAN bus information transceiving unit includes a low-speed CAN bus transceiver circuit and/or a high-speed CAN bus transceiver.

Preferably, the alarm module is a buzzer.

Preferably, the camera is a 360° camera.

Preferably, the central processing module is a programmable processor.

Preferably, the high-speed CAN bus transceiver circuit is a TJA1041AT integrated chip.

Preferably, the low-speed CAN bus transceiver circuit is a TJA1055T integrated chip.

Preferably, the video decoding module is connected to the central processing module through an I2C bus.

The beneficial effects of the utility model are:

The utility model can directly obtain the vehicle bus information, and obtain the real-time state of the vehicle through the vehicle bus information. The central processing module adopts the ADAS analysis system, and performs analysis according to the vehicle state and the video image collected by the camera and stores the video image, so that it can be more accurate and real-time Carry out reversing assistance, lane departure reminder, pedestrian passing reminder, and safe distance driving reminder.

Description of drawings

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is a schematic structural diagram of an embodiment of the utility model.

detailed description

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the utility model. Obviously, the described The embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall belong to the protection scope of the present utility model.

Below through specific embodiment, the utility model is described in detail.

As shown in Figure 1, a kind of driving recording device based on vehicle CAN bus and ADAS system of the utility model comprises: CAN bus information module, central processing module, camera, video decoding module, alarm module, image display module; Wherein, all The input end of the CAN bus information module is connected with the vehicle CAN bus to obtain the vehicle CAN bus signal; the output end of the CAN bus information processing module is connected with the central processing module; the camera, video decoding module, and alarm module All are connected with the central processing module; the input end of the image display module is connected with the output end of the video decoding module.

Specifically, the CAN bus information module includes a CAN bus information transceiver unit, a CAN bus control unit, and a CAN bus information processing unit, wherein the input of the CAN bus information transceiver unit is connected to the vehicle CAN bus; the CAN bus information The output end of the transceiver unit is connected with the input end of the CAN bus control unit; the output end connected with the CAN bus control unit is connected with the input end of the CAN bus information processing unit; the output end of the CAN bus information processing unit Connect with the central processing module. Specifically, the central processing module adopts an ADAS system integrated chip.

As a preferred embodiment, the CAN bus information transceiving unit includes a low-speed CAN bus transceiver circuit and/or a high-speed CAN bus transceiver.

As a preferred embodiment, the alarm module is a buzzer.

As a preferred implementation manner, the camera is a 360° camera.

As a preferred embodiment, the central processing module is a programmable processor.

As a preferred embodiment, the high-speed CAN bus transceiver circuit is a TJA1041AT integrated chip.

As a preferred implementation, the low-speed CAN bus transceiver circuit is a TJA1055T integrated chip.

As a preferred implementation, the video decoding module is connected to the central processing module through an I2C bus

Its specific working method is as follows:

After the system is powered on and initialized, the driving recording device based on the vehicle CAN bus and the ADAS system is in a standby dormant state. When the vehicle CAN bus has a signal, the driving recording device based on the vehicle CAN bus and the ADAS system enters the working state.

The CAN bus information module filters the CAN bus signal, filters out useless information, and obtains information such as speed pulse and radar. When the vehicle speed is greater than 20Km/hour, it enters the driving warning mode. When the vehicle is driving, when the lane deviates, the front and rear following distances are small, and the pedestrians in front pass by, the buzzer alarm reminds; when the vehicle is reversing, the 360° video screen displays the surrounding environment of the vehicle. , when there is an obstacle, the buzzer will give an alarm. When the CAN bus information of the vehicle cannot be received for a long time, the driving recording device automatically enters the standby dormant state.

The utility model can directly obtain the vehicle bus information, and obtain the real-time state of the vehicle through the vehicle bus information. The central processing module adopts the ADAS analysis system to analyze according to the vehicle state and the video images collected by the camera, so that the reversing assistance can be performed more accurately and in real time. , Lane departure reminder, pedestrian passing reminder, safe vehicle distance driving reminder.

Claims (10)

1., based on a bicycle recording apparatus for vehicle CAN bus and ADAS system, it is characterized in that, described bicycle recording apparatus comprises:

CAN information module, central processing module, camera, Video decoding module, alarm module, image display;

Wherein, the input end of described CAN information module is connected with vehicle CAN bus, for obtaining vehicle CAN bus signal;

The mouth of described CAN message processing module is connected with described central processing module;

Described camera, Video decoding module, alarm module are all connected with described central processing module;

The input end of described image display is connected with the mouth of described Video decoding module.

2. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 1, it is characterized in that, described CAN information module comprises CAN information transmit-receive unit, CAN control unit, CAN information process unit,

Wherein, the input end of described CAN information transmit-receive unit is connected with vehicle CAN bus;

The mouth of described CAN information transmit-receive unit is connected with the input end of described CAN control unit;

The mouth that described CAN control unit connects is connected with the input end of described CAN information process unit;

The mouth of described CAN information process unit is connected with described central processing module.

3. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 2, it is characterized in that, described central processing module adopts ADAS system integrated chip.

4. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 3, it is characterized in that, described CAN information transmit-receive unit comprises low speed CAN transmission circuit and/or high-speed CAN bus transceiver.

5. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to any one of Claims 1-4, it is characterized in that, described alarm module is buzzer phone.

6. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 5, it is characterized in that, described camera is 360 ° of cameras.

7. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 6, it is characterized in that, described central processing module is programmable processor.

8. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 7, it is characterized in that, described high-speed CAN bus transmission circuit is TJA1041AT integrated chip.

9. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 8, it is characterized in that, described low speed CAN transmission circuit is TJA1055T integrated chip.

10. a kind of bicycle recording apparatus based on vehicle CAN bus and ADAS system according to claim 5, it is characterized in that, described Video decoding module is connected with described central processing module by I2C bus.