CN202075835U

CN202075835U - Device for automatically calling for help in case of vehicle traffic accident

Info

Publication number: CN202075835U
Application number: CN2011202000614U
Authority: CN
Inventors: 梁杰; 管志光
Original assignee: Shandong Jiaotong University
Current assignee: Shandong Jiaotong University
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2011-12-14
Anticipated expiration: 2021-06-15

Abstract

The utility model relates to a device for automatically calling for help in the case of a vehicle traffic accident, which comprises a central control unit, a power supply unit, a collision detection unit, a vehicle attitude detection unit, a vehicle positioning unit, an information wireless transmission unit and a man-machine interaction unit. The collision detection unit, the vehicle attitude detection unit, the vehicle positioning unit, the information wireless transmission unit and the man-machine interaction unit are connected with a singlechip of the central control unit through corresponding interface circuits. When the traffic accident occurs to a vehicle, information such as the collision degree, the vehicle attitude, the accident position and the like can be automatically sent to correlative departments such as the road rescue center and the like and correlative personnel, so that the rescue can be implemented in the shortest time.

Description

A kind of vehicle traffic accident automatic help device

Affiliated technical field

When the utility model relates to a kind of vehicle generation traffic hazard, send the automatic help device of distress signals from relevant unit such as trend highway rescue center, car owner or individual.

Background technology

Along with the high speed development of global economy, auto industry and high-grade highway for realize fast, traffic easily created necessary apparatus of transport and infrastructure, improved people's quality of life, greatly changed people's life style.Yet mechanical transport is also brought some negative effects to the human lives when bringing comfortable and convenient service for the mankind, as traffic hazard.According to statistics, the infringement consequence that road traffic accident caused of China was still serious in recent years, and annual toll on traffic all occupy first place, the world.Cause the reason of China's road traffic accident above-mentioned condition no doubt to have a lot, but have quite a few death to be because accident takes place by back scene of the accident pedestrian or vehicle is less, can not in time report to the police, and the victim because of badly wounded, lose consciousness in time to cry for help and delay that rescue time causes.

Summary of the invention

In order to overcome the existing above-mentioned defective of present China road traffic accident rescue work, the utility model provide a kind of can be when vehicle generation traffic hazard, send the automatic help device of distress signals from relevant unit such as trend highway rescue center, car owner or individual.

The technical scheme that its technical matters that solves the utility model adopts is: the automatic help device comprises central control unit, power supply unit, collision detection unit, vehicle attitude detecting unit, vehicle locating unit, information wireless transmission unit and man-machine interaction unit.Described power supply unit uses Vehicular accumulator cell, provides 5V and two kinds of operating voltage of 9V to system; Described collision detection unit, vehicle attitude detecting unit, vehicle locating unit, information wireless transmission unit and man-machine interaction unit all link to each other with central control unit by corresponding interface circuits.

The structure of described central control unit is formed: at least one UART, at least one external interrupt trigger, 32KBytes Flash ROM and the E of 256Bytes at least at least ²PROM, and single-chip microcomputer that can online serial programming.

The described collision detection unit that is used for detecting in real time vehicle vertical, horizontal acceleration, ADXL278 forms by the biaxial type acceleration transducer.

The described vehicle attitude detecting unit that is used for detecting in real time vehicle vertical, horizontal attitude, SCA100T forms by the biaxial type obliquity sensor.

The described vehicle locating unit that is used for obtaining in real time the vehicle geographic position is made up of the GR-85 module.

Sending the information wireless transmission unit of distress signals when described traffic hazard takes place is made up of the GR100 module.

Described man-machine interaction unit is made up of LCD MODULE, keyboard circuit and warning circuit.

The beneficial effects of the utility model are: when vehicle generation traffic hazard, can detect and judge the order of severity of traffic hazard automatically, and the information such as attitude, the site of an accident that will collide degree, vehicle where necessary automatically send to relevant departments or relevant individuals such as highway rescue center, thereby can implement rescue in the short as far as possible time.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the block diagram of system of example;

Fig. 2 is the single chip circuit schematic diagram that example adopts;

Fig. 3 is the sensor input down trigger circuit theory diagrams that example adopts;

Fig. 4 is serial communication and the level shifting circuit schematic diagram that example adopts;

Fig. 5 is the man-machine interaction unit interface circuit schematic diagram of example;

Fig. 6 is the power circuit principle figure of example.

Embodiment

Below in conjunction with accompanying drawing and specific implementation process the utility model is described further.

Referring to Fig. 1 and Fig. 2, central control unit is single-chip microcomputer PIC18F458, single-chip microcomputer links to each other with collision detection unit, vehicle attitude detecting unit, vehicle locating unit, information wireless transmission unit and man-machine interaction unit by corresponding interface circuits, the various information of vehicle itself are as license plate number, car owner, Description of Goods or the contained prior E that deposit single-chip microcomputer by the RS-232 serial ports of PC in such as patronage ²Among the PROM.

Referring to Fig. 3, the two-way output of biaxial type acceleration transducer ADXL278 and the two-way output of biaxial type obliquity sensor SCA100T all link to each other with the input end of corresponding comparer, when the acceleration of vehicle or attitude surpass setting value, OR-NOT circuit U1 just exports interrupt trigger signal, triggers the interruption of single-chip microcomputer.In interruption subroutine, single-chip microcomputer is judged interrupt source and is carried out corresponding action by the state of RA0～RA3.

The GR-85 module that is used for obtaining in real time the vehicle geographic position adopts the serial line interface of Transistor-Transistor Logic level; Information wireless transport module GR100 adopts the RS-232 serial line interface.

Referring to Fig. 4, being connected of single-chip microcomputer PIC18F458 and GR-85, GR100 or PC need be by the switching of CD4052, and wherein being connected between single-chip microcomputer and GR100 and the PC also passed through level transferring chip MAX232.When the generation traffic hazard also need be required assistance, single-chip microcomputer PIC18F458 at first obtained the vehicle location coordinate information by the GR-85 module, will deposit single-chip microcomputer E in advance in then ²License plate number among the PROM, car owner, Description of Goods or contained information such as patronage together with information such as the attitude of collision degree, vehicle, the sites of an accident, utilize GPRS wireless transport module GR100 to send to relevant departments or relevant individuals such as highway rescue center.

Referring to Fig. 5, in man-machine interaction unit, the LCD MODULE OCM12232C-1 that has Chinese character base is used for showing relevant information, adopts serial interface mode between Liquid Crystal Module and the single-chip microcomputer.Be provided with two buttons of SB1 and SB2 in the system, when importing the relevant information of vehicle itself, press SB1 earlier, link to each other so that the serial ports of single-chip microcomputer is switched to the serial ports of PC; SB2 is the emergency acknowledgement key, and when system detects when more serious traffic hazard has taken place, hummer HA pipes, and alarm lamp VD is glittering simultaneously.If SB2 is not pressed within a certain period of time, then system sends distress signals automatically, otherwise system then cancels the transmission of distress signals.

Referring to Fig. 6, need two kinds of direct supplys of 5V and 9V during system works, the required 9V DC voltage of GPRS module GR100 is supplied with by LM2676-ADJ, and the required 5V operating voltage of other circuit of system is provided by LM2676-5.0.

Claims

1. a vehicle traffic accident automatic help device is characterized in that: comprise central control unit, power supply unit, collision detection unit, vehicle attitude detecting unit, vehicle locating unit, information wireless transmission unit and man-machine interaction unit; Described collision detection unit, vehicle attitude detecting unit, vehicle locating unit, information wireless transmission unit and man-machine interaction unit link to each other with the single-chip microcomputer of central control unit by corresponding interface circuits.

2. vehicle traffic accident automatic help device according to claim 1 is characterized in that: described collision detection unit is made up of biaxial type acceleration transducer ADXL278; Described vehicle attitude detecting unit is made up of biaxial type obliquity sensor SCA100T; Described vehicle locating unit is made up of the GR-85 module; Described information wireless transmission unit is made up of the GR100 module.