CN210038891U

CN210038891U - Automobile data recorder

Info

Publication number: CN210038891U
Application number: CN201921354437.XU
Authority: CN
Inventors: 孙玉涛; 朱其祥; 徐勤亚
Original assignee: Anhui University of Finance and Economics
Current assignee: Anhui University of Finance and Economics
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-02-07
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a vehicle event data recorder, including three-phase rectifier and three-phase dc-to-ac converter, gather board, navigation board and communication module, it includes MCU1, power management module, ignition judgement circuit and memory to gather the board, MCU1 connects power management module respectively, ignition judgement circuit and memory, MCU1 still connects the OBD interface through K line drive module, MCU1 still connects the CAN bus through CAN drive module, the navigation board includes MCU2, 3 axle accelerometers and barometer, MCU2 connects 3 axle accelerometers and barometer respectively, the utility model discloses a novel introduction of vehicle event data recorder, but automatic alarm when taking place the car accident, provide more abundant rescue time for wounded's rescue to CAN in time inform traffic police department and insurance company to carry out on-the-spot affirmation and responsibility distribution, subsequent transaction of being convenient for. Meanwhile, the method has an important effect on the rapid recovery of the traffic of the road section with the accident by timely recording on the scene. The burden of the road traffic system is reduced to a certain extent.

Description

Automobile data recorder

Technical Field

The utility model relates to the field of welding technique, specifically a vehicle event data recorder.

Background

Although the functions of the traditional automobile data recorder gradually exceed the pure automobile data record trend in the past and are integrated, the automobile data recorder, the electronic dog and the navigation are integrated into a whole, and even a series of functions of the automobile data recorder, the electronic dog, the navigation and the live-action navigation are integrated into a rearview mirror product. But still has no innovation of a greater degree, and cannot meet the requirements of modern people on safe traveling and intelligent traffic.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vehicle event data recorder to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a vehicle event data recorder, including three-phase rectifier and three-phase inverter, gather board, navigation board and communication module, it includes MCU1 to gather the board, power management module, circuit and memory are judged in the ignition, MCU1 connects power management module respectively, circuit and memory are judged in the ignition, MCU1 still connects the OBD interface through K line drive module, MCU1 still connects the CAN bus through CAN drive module, the navigation board includes MCU2, 3 axle accelerometers and barometer, MCU2 connects 3 axle accelerometers and barometer respectively, MCU1 is through inside debugging interface connection MCU2, MCU1 and MCU2 all are connected with communication module, 3 axle accelerometers are equipped with a plurality ofly.

As a further technical solution of the present invention: the acquisition board further comprises an LED indicating lamp, and the LED indicating lamp is connected with the MCU 1.

As a further technical solution of the present invention: the communication module comprises a Wifi hotspot, a GPS module, an SIM card, a 2G module, a 3G module and a 4G module.

As a further technical solution of the present invention: and the MCU1 and the MCU2 both adopt STM32 singlechips.

As a further technical solution of the present invention: the power management module is also connected with the communication module through a battery.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a but novel vehicle event data recorder's introduction automatic alarm when taking place the traffic accident provides more abundant rescue time for wounded's rescue to can in time inform traffic police department and insurance company to carry out on-the-spot affirmation and responsibility distribution, subsequent transaction of being convenient for. Meanwhile, the method has an important effect on the rapid recovery of the traffic of the road section with the accident by timely recording on the scene. The burden of the road traffic system is reduced to a certain extent.

Drawings

Fig. 1 is an electrical schematic diagram of the present invention.

FIG. 2 is a schematic diagram of an acquisition board circuit;

FIG. 3 is a schematic diagram of a navigation panel circuit;

FIG. 4 is a DC to DC circuit diagram;

FIG. 5 is a circuit diagram of the MCU1 and 4G module interface;

FIG. 6 is a diagram of a sensor circuit;

FIG. 7 is a circuit diagram of an air pressure sensor;

FIG. 8 is a battery operated switching circuit diagram;

fig. 9 is a charging circuit diagram.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: please refer to fig. 1-9, a vehicle event data recorder, including three-phase rectifier and three-phase inverter, gather the board, navigation board and communication module, it includes MCU1 to gather the board, the power management module, ignition judgement circuit and memory, power management module is connected respectively to MCU1, ignition judgement circuit and memory, MCU1 still connects the OBD interface through K line drive module, MCU1 still connects the CAN bus through CAN drive module, the navigation board includes MCU2, 3 axle accelerometers and barometer are connected respectively to MCU2, MCU1 connects MCU2 through inside debugging interface, MCU1 and MCU2 all are connected with communication module, 3 axle accelerometers are equipped with a plurality ofly. The collection board further comprises an LED indicator light, and the LED indicator light is connected with the MCU 1. The MCU1 communicates with the 4G module through the UART6, and the UART2 of the 4G module is used as a special channel of the GPS; the communication module comprises a Wifi hotspot, a GPS module, an SIM card, a 2G module, a 3G module and a 4G module. And the MCU1 and the MCU2 both adopt STM32 singlechips. The power management module is also connected with the communication module through a battery. The information acquisition subsystem acquires vehicle acceleration signals by means of a triaxial acceleration sensor, acquires inclination angle parameters of a running vehicle and a horizontal plane through a gravity sensor, uploads the inclination angle parameters to a cloud server, the cloud platform calculates danger parameters through an accident recognition algorithm and compares the danger parameters with an early warning threshold value, if the threshold value is reached, the accident is judged to occur, the cloud platform sends an accident instruction to an equipment end, the short message transmission module acquires accident site information by utilizing NB-IoT base stations and GPS positioning, sends alarm information to a user end of a manager, the video transmission module calls a video before the accident occurs, and the video is transmitted to a traffic police department 110 rescue center, a 120 emergency center, a fire emergency center and an insurance company emergency center terminal to be displayed and played, and rescue personnel are assisted in rescue deployment.

This design has the following functions:

(1) comprehensive early warning

On the basis of the original technology of the automobile data recorder, STM32 and Hi3516 chips are added to the automobile data recorder, and the automobile data recorder respectively has the functions of sensor data acquisition and transmission and video transmission, so that the function of a vehicle accident alarm system is realized. Different from the traditional alarm, the system can judge the accident occurrence condition of the vehicle by combining double thresholds according to the acceleration change condition of the vehicle, and the function of automatically contacting a traffic police department to alarm in the first time when the vehicle has an accident is realized.

(2) Dual positioning

On the basis of a traditional GPRS base station positioning mode, the technical group adopts a GPS and NB-IoT base station dual positioning mode, and effectively fuses a GPS module and base station positioning, so that on one hand, the base station positioning can make up the defect that the GPS cannot realize indoor positioning, and on the other hand, the GPS positioning has higher precision, thereby making up the defect of low positioning precision of the base station positioning. The advantages can be complemented by combining the two methods, and the positioning accuracy can be further ensured.

(3) Data processing

In a cloud platform of the comprehensive early warning subsystem, a communication model of terminal access, rule-based heterogeneous data storage and historical data management, user-to-device communication and device-to-device communication is completed, and mass data received by the cloud platform are periodically stored in a historical data replacement mode, so that stable operation of the whole system is guaranteed.

(4) Intelligent and rapid mobile client

The intelligent bank client developed by matching with the accident alarm system can not only perform full input of user information, realize the unique matching of cloud platform information, provide alarm information and accident video for traffic police departments in time, but also provide convenience services such as violation inquiry, payment and the like for common users, and is convenient and rapid.

Example 2: based on embodiment 1, the power management module is internally provided with a DC-DC circuit, a charging circuit and a battery switching circuit, and the DC-DC circuit is shown in fig. 4 as MP4460DQ using MPS. The switching frequency is set at around 2 MHz. 4.5V is output. The quiescent current is less than 0.1 mA. The charging circuit is shown in fig. 9, the charging IC adopts MP2602, the charging current is set to about 80mA, and the battery power supply switching circuit is shown in fig. 8, and when 12V is cut off, the battery power supply is automatically switched.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a vehicle event data recorder, including three-phase rectifier and three-phase inverter, gather board, navigation board and communication module, a serial communication port, it includes MCU1 to gather the board, power management module, circuit and memory are judged in the ignition, MCU1 connects power management module respectively, circuit and memory are judged in the ignition, MCU1 still connects the OBD interface through K line drive module, MCU1 still connects the CAN bus through CAN drive module, the navigation board includes MCU2, 3 axle accelerometers and barometer, MCU2 connects 3 axle accelerometers and barometer respectively, MCU1 is through inside debugging interface connection MCU2, MCU1 and MCU2 all are connected with communication module, 3 axle accelerometers are equipped with a plurality ofly.

2. The automobile data recorder according to claim 1, wherein the collecting board further comprises an LED indicator light, and the LED indicator light is connected with the MCU 1.

3. The automobile data recorder according to claim 1, wherein the communication module comprises a Wifi hotspot, a GPS module, a SIM card, a 2G module, a 3G module and a 4G module.

4. The automobile data recorder of claim 1, wherein the MCU1 and the MCU2 both use an STM32 single chip microcomputer.

5. The vehicle event data recorder of any one of claims 1-4, wherein the power management module is further connected to the communication module via a battery.