CN203084789U - Data reading equipment of automobile accident data recording device - Google Patents
Data reading equipment of automobile accident data recording device Download PDFInfo
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- CN203084789U CN203084789U CN 201220572164 CN201220572164U CN203084789U CN 203084789 U CN203084789 U CN 203084789U CN 201220572164 CN201220572164 CN 201220572164 CN 201220572164 U CN201220572164 U CN 201220572164U CN 203084789 U CN203084789 U CN 203084789U
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Abstract
The utility model provides data reading equipment of an automobile accident data recording device. The data reading equipment comprises a communication control unit and an RS232-OBDII protocol conversion interface circuit, wherein the communication control unit is used for recording data from an automobile accident data recording device and analyzing the data and comprises an RS232 interface; the RS232-OBDII protocol conversion interface circuit is positioned between the communication control unit and the automobile accident data recording device and is used for carrying out RS232-OBDII protocol conversion; the protocol conversion interface circuit is connected with the communication control unit through a serial port communication line and is connected with the automobile accident data recording device through an OBDII communication line. The data reading equipment has high reliability in control technique realization, is low in design and manufacturing cost, high in application generality, and is applicable to relevant automobile accident data reading.
Description
Technical field
The utility model relates to a kind of data fetch equipment, more specifically, relates to a kind of data fetch equipment of motor-vehicle accident data recording equipment.
Background technology
The motor-vehicle accident data can roughly be divided into following 5 aspects: 1. vehicle movement and system state before colliding, rotating speed as engine, throttle opening, the speed of a motor vehicle, the gear of automatic transmission, the duty of brake system (ABS/TCS/ESP), whether each main system works normally waits 2. drivers' operational circumstances, as the on off state of brake pedal, the position of gas pedal, steering angle, cruise function is enabled 3. vehicle collision signal such as situation, as horizontal and vertical velocity variable, front or side impact sensor deformation quantity data, 4. constrained systems (securing band such as roller sensor side tilt angle variable quantity, using and the state that detonates air bag), whether wear as securing band, whether copilot has the occupant, and whether occupant's air bag is suppressed, seat belt pretensioner, data after 5. collisions such as the state that detonates of air bag or gas curtain and the moment of detonating, for example collide the startup of automatic help system, door lock automatic unlocking, power supply be the automatic cut-out record etc. of new forms of energy or electric motor car particularly.
Above-mentioned these five aspects are more complete accident data recorder (EDR, Event Data Recorder) function that is possessed, but realize these functions, to depend on passive safety system be the development of air bag system and apply, and the development of automobile bus technology and popularizing.Common and the air bag data acquistion and control system integration of accident data recorder, the air bag data acquistion and control system comprises: signal receiving unit, signal processing unit and data storage cell.Data such as a plurality of sensor acquisition vehicle decelerations of signal receiving unit collection passive safety system, personal harness operating position utilize In-vehicle networking (as the CAN bus) to gather the dynamic data of systems such as the speed of a motor vehicle, engine, wheel box, ABS.The EDR signal processing function is integrated in the safety airbag ECU usually, and to put quick-fried algorithm identical because EDR triggers algorithm and air bag, the incident that therefore every triggering air bag algorithm activates, the incident of being noted by EDR exactly; Vice versa, and the un-activation of air bag algorithm does not just have the EDR data.The data storage cell of EDR is stored, is refreshed or deleted data according to the order of control module.
Except can the device of record data, also need have one can be with the instrument of the data read that stores in the collision accident, make that people can be with under its download after accident, promptly by with safety airbag ECU (Electronic Control Unit, electronic control unit) communication is read and is stored in the data of storing among the EEPROM, by software it is parsed the report that generates the picture and text form again.Reading the mode of EEPROM, can be that direct storage unit access address obtains, also can be by reading according to the instruction of vehicle-carrying communication agreement (as CAN, J1850, KWP2000 etc.) definition in the ECU technical manual.The former often uses for the ECU parts manufacturer, and the latter is that car load factory or third party's too development merchant adopt.Correspondingly, motor-vehicle accident data read instrument can be divided into two classes, one class is the specialized equipment of safety airbag ECU supplier according to own product development, directly read data in the storer of safety airbag ECU by the visit physical address, as Bosch, Siemens, Continental, transnational automotive electronics components supplying such as Delphi merchant.But this kind equipment is used for engine bench test when mainly being manufacturer's exploitation safety airbag ECU, has read data functions concurrently, and versatility is poor, and underground.Another kind of is that third company is after car load factory has bought the Related product technical manual, equipment according to the exploitation of the definition in the technical manual based on OBDII On-Board Diagnostics (OBD) agreement, by relevant OBD(On-Board Diagnostics, mounted automatic diagnosis) instruction is read the specific data in the safety airbag ECU and is resolved and obtains, typical as in the North America extensively by law enforcement agency, insurance company, the employed CDR(Crash Data Retrieval System of car load factory), the main engine plants that support at present have: GM, Chrysler, Ford, Isuzu, Mitsubishi, Suzuki.The nearly all vehicle of selling in North America market of its Middle and North America three big automobile factorys can both read casualty data with CDR.The SAE(SAE) some closed specifications of accident data read instrument have been stipulated proposed standard J1698-2(VehicleEvent Data Interface-Vehicular Data Extraction), comprised hardware implementation mode, upper computer software process flow diagram and the online and mode etc. that reads off-line.
At present at home, though joint brand and independent brand are numerous because casualty data do not have unified standard, between widely different, in case the situation of casualty data occurs reading, often can only rely on safety airbag ECU manufacturer or car load factory reads.But because technical manual belongs to enterprise's secret, the confidence level that reads and provide to certifying agency/law enforcement agency and client's motor-vehicle accident data report by manufacturer often enjoys query.For these reasons, need the integrated casualty data fetch equipment of software and hardware of the multiple OBDII communication protocol of a kind of compatibility now badly, thereby can support a plurality of brands and vehicle based on different vendor and different communication protocol.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of data fetch equipment of motor-vehicle accident data recording equipment, comprising: be used for from the communication control unit of motor-vehicle accident data recording equipment reading of data and analysis, it comprises the RS232 interface; Between described communication control unit and motor-vehicle accident data recording equipment and the RS232-OBDII protocol conversion interface circuit that carries out the RS232-OBDII protocol conversion; Wherein said RS232-OBDII protocol conversion interface circuit is connected by the serial communication line with described communication control unit, is connected by the OBDII order wire with the motor-vehicle accident data recording equipment.
Further, described RS232-OBDII protocol conversion interface circuit comprises: the RS232 interface circuit that is connected with the RS232 interface of described communication control unit; The OBDII protocol interface circuit that is connected with the vehicle diagnostics mouth; Carry out the RS232-OBDII protocol conversion circuitry of RS232-OBDII protocol conversion, it is connected between described RS232 interface circuit and the OBDII protocol interface circuit.
Further, described RS232-OBDII protocol conversion circuitry comprises: the RS232 interface, and it is communicated by letter with described RS232 interface circuit; The OBDII interface, itself and described OBDII protocol interface circuit communication; Carry out the order and the agreement interpreter of RS232-OBDII protocol conversion, it is connected between described RS232 interface and the described OBDII interface.
Further, described RS232-OBDII protocol conversion circuitry comprises status lamp and the analog to digital converter that is connected to described order and interpreter.
Further, described OBDII protocol interface circuit comprises the externally fed interface to described motor-vehicle accident data recording equipment power supply.
Further, described communication control unit comprises: the human-computer interaction module that receives user's input; Reception is imported from the user of described human-computer interaction module, and by the communication module of described RS232 interface to initialization of described motor-vehicle accident data recording equipment and transceive data; Reception is from the casualty data of described communication module, and the data transmission after will resolving is to the EDR Data Receiving and the parsing module of described human-computer interaction module.
Further, described EDR Data Receiving and parsing module comprise: receive the EDR original message EDR original message receiver module, casualty data is put in order the data preparation parsing module of parsing, is generated the text chart generation module of text chart according to the data after resolving.
Further, described communication control unit also comprises: receive from user's input of described human-computer interaction module with from the data of described EDR Data Receiving and parsing module, and the report that will generate transfers to the report derivation module of described human-computer interaction module.
Further, described human-computer interaction module comprises: receive user's load module of user's input, show the report display module of the report that described report derivation module generates.
Further, described RS232-OBDII protocol conversion circuitry is a protocol conversion chip.
The beneficial effects of the utility model are: along with the rising year by year with traffic hazard of increasing rapidly of China's automobile pollution, and manufacturer, consumer and accident identify that law enforcement agency is more and more strong and urgent for the demand of third-party data read instrument.This utility model has the high reliability that control technology realizes, design and manufacture cost is cheap, uses highly versatile, is fit to be applied to the associated vehicle casualty data and reads.
Description of drawings
Fig. 1 is the schematic diagram of data fetch equipment of the present utility model;
Fig. 2 is the block scheme of the communication control unit shown in Fig. 1;
Fig. 3 is the circuit diagram of an embodiment of RS232-OBDII protocol conversion interface circuit among Fig. 1;
Fig. 4 is the circuit diagram of an embodiment of RS232-OBDII protocol conversion chip among Fig. 3;
Fig. 5 is the circuit diagram of an example of ISO15765 interface circuit among Fig. 3;
Fig. 6 is the synoptic diagram of an example of motor-vehicle accident data fetch equipment among Fig. 1.
Embodiment
As shown in Figure 1, data fetch equipment of the present utility model comprises: 1) communication control unit, and it is from the motor-vehicle accident data recording equipment, for example safety airbag ECU or The Development of Automobile Black-Box, middle reading of data is also analyzed, and communication control unit has the RS232 interface.2) RS232-OBDII protocol conversion interface circuit, it realizes the communication between communication control unit and the ECU/ accident data recorder.Communicate by letter with the serial communication line between RS232-OBDII protocol conversion interface circuit and the communication control unit, and communicate by letter with the OBDII order wire between the vehicle diagnostics mouth.Behind the vehicle diagnostics mouth,, then also to there be ECU stube cable (not shown) to connect if be connected to safety airbag ECU.The communication Protocol Conversion of RS232-OBDII protocol conversion interface circuit itself and communication control unit is the communication protocol with the ECU/ accident data recorder, and with the communication control unit that is transferred to of ECU/ accident data recorder.
RS232-OBDII protocol conversion interface circuit comprises: 1) RS232 interface circuit, the RS232 interface of itself and communication control unit communicates by the serial communication line.2) RS232-OBDII protocol conversion circuitry, it finishes the conversion of RS232-OBDII agreement.3) a plurality of OBDII protocol interface circuit, the bus communication between its realization and The Development of Automobile Black-Box or the ECU.
Fig. 2 shows the more detailed schematic diagram of the communication control unit among Fig. 1.Communication control unit comprises human-computer interaction module, communication module, EDR Data Receiving and parsing module, report derivation module.Human-computer interaction module receives user's input, comprises selecting ECU type to be read, the report template selection of Sheng Chenging, name and store path selection etc. at last.Communication module sends instruction by EDR Data Receiving and parsing module reception user's options to the protocol conversion chip, to realize the selection and the initialization of agreement, sends according to safety air sac controller EDR data definition more afterwards and the reception message.After EDR Data Receiving and parsing module receive the message of sending from the serial ports end relevant with the motor-vehicle accident data by EDR original message receiver module, be committed to the data preparation parsing module, by it original message is put in order and resolved, 16 system numerical value are converted to the data that are of practical significance, the information such as situation, gas-bag system trouble light state of detonating as the speed of a motor vehicle, acceleration, velocity variable, seatbelt wearing situation, air bag, and pass through relevant literal and the chart of text chart generation module generation, transfer to the generation of report derivation module and report.Report is derived module the data based client's of EDR that parses needs is generated different report form (for example Chinese edition, English edition, figure, chart etc.), and the report display module of transferring to human-computer interaction module shows to the user.
Fig. 3 has shown the circuit diagram of an embodiment of RS232-OBDII protocol conversion interface circuit among Fig. 1.The RS232 interface circuit is connected to the RS232 interface of communication control unit.RS232-OBDII protocol conversion circuitry among Fig. 1 is realized by a chip, this RS232-OBDII protocol conversion chip will be converted to OBDII communication protocol from the serial communication protocol of RS232 interface circuit, be committed to the OBDII interface circuit, the OBDII interface circuit is illustrated as four, realize different OBDII communication protocol, for example CAN agreement, SAEJ1850, KWP2000 etc.This RS232-OBDII protocol conversion interface circuit also comprises externally fed interface and status lamp etc.When safety airbag ECU can't obtain power supply by vehicle (for example, pulling down), can be the safety airbag ECU power supply by this externally fed interface of the present utility model from car.
Fig. 4 is the schematic diagram of an embodiment of RS232-OBDII protocol conversion chip among Fig. 3.This RS232-OBDII protocol conversion chip is chip TL718, the automobile-used communication protocol of the present nearly all main flow of this chip support.TL718 has RS232 interface, order and agreement interpreter, OBDII interface, analog to digital converter etc.The RS232 interface is connected to the RS232 interface circuit among Fig. 3, and order and agreement interpreter are responsible for the RS232-OBDII protocol conversion, and the OBDII interface is connected to the OBDII protocol interface circuit among Fig. 3, and status lamp and analog to digital converter are connected to order and agreement interpreter.
Fig. 5 is the circuit diagram of the example of ISO15765 interface circuit in the OBDII protocol interface circuit among Fig. 3.It shows in detail an example of CAN protocol interface circuit.It comprises bus transceiver, is equipped with peripheral capacitance resistance, realizes the packet sending and receiving of CAN agreement.
Fig. 6 is the application synoptic diagram of motor-vehicle accident data fetch equipment among Fig. 1.Communication control unit 11 usefulness computers are realized, 15 power supplies of RS232-OBDII protocol conversion interface circuit 12 usefulness 12V D.C. regulated power supplies.By serial ports (RS232) communication, for example communication control unit 11 can carry out serial communication by the MSCOMM control of Windows between communication control unit 11 and the RS232-OBDII protocol conversion interface circuit 12.RS232-OBDII protocol conversion interface circuit 12 connects for example J1962OBD diagnose interface of vehicle diagnostics mouth 14(), vehicle diagnostics mouth 14 is connected to safety airbag ECU 13 by ECU stube cable 16, and wherein safety airbag ECU 13 is by 12 power supplies of RS232-OBDII protocol conversion interface circuit.The user carries out initialization according to the model of safety airbag ECU 13 by 11 pairs of RS232-OBDII protocol conversions of operation communication control module interface circuit 12, realize the conversion of RS232-OBDII agreement, thereby read casualty data and show at communication control unit 11 from safety airbag ECU 13.
Obviously, those skilled in the art can carry out various combinations and modification and not break away from this spirit and scope the utility model.If of the present utility model these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (6)
1. the data fetch equipment of a motor-vehicle accident data recording equipment is characterized in that, comprising:
Be used for from the communication control unit of motor-vehicle accident data recording equipment reading of data and analysis, it comprises the RS232 interface;
Between described communication control unit and motor-vehicle accident data recording equipment and the RS232-OBDII protocol conversion interface circuit that carries out the RS232-OBDII protocol conversion;
Wherein said RS232-OBDII protocol conversion interface circuit is connected by the serial communication line with described communication control unit, is connected by the OBDII order wire with the motor-vehicle accident data recording equipment.
2. the data fetch equipment of motor-vehicle accident data recording equipment according to claim 1 is characterized in that, described RS232-OBDII protocol conversion interface circuit comprises:
The RS232 interface circuit that is connected with the RS232 interface of described communication control unit;
The OBDII protocol interface circuit that is connected with the vehicle diagnostics mouth;
Carry out the RS232-OBDII protocol conversion circuitry of RS232-OBDII protocol conversion, it is connected between described RS232 interface circuit and the OBDII protocol interface circuit.
3. the data fetch equipment of motor-vehicle accident data recording equipment according to claim 2 is characterized in that, described RS232-OBDII protocol conversion circuitry comprises:
The RS232 interface, it is communicated by letter with described RS232 interface circuit;
The OBDII interface, itself and described OBDII protocol interface circuit communication;
Carry out the order and the agreement interpreter of RS232-OBDII protocol conversion, it is connected between described RS232 interface and the described OBDII interface.
4. the data fetch equipment of motor-vehicle accident data recording equipment according to claim 3 is characterized in that, described RS232-OBDII protocol conversion circuitry comprises status lamp and the analog to digital converter that is connected to described order and interpreter.
5. the data fetch equipment of motor-vehicle accident data recording equipment according to claim 3 is characterized in that, described OBDII protocol interface circuit comprises the externally fed interface to described motor-vehicle accident data recording equipment power supply.
6. the data fetch equipment of motor-vehicle accident data recording equipment according to claim 2 is characterized in that, described RS232-OBDII protocol conversion circuitry is a protocol conversion chip TL718.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572164 CN203084789U (en) | 2012-11-01 | 2012-11-01 | Data reading equipment of automobile accident data recording device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572164 CN203084789U (en) | 2012-11-01 | 2012-11-01 | Data reading equipment of automobile accident data recording device |
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| CN203084789U true CN203084789U (en) | 2013-07-24 |
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| CN 201220572164 Expired - Fee Related CN203084789U (en) | 2012-11-01 | 2012-11-01 | Data reading equipment of automobile accident data recording device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413413A (en) * | 2013-07-26 | 2013-11-27 | 南通和同信息科技有限公司 | Comprehensive operation management platform for multi-model new energy vehicles |
| CN106394467A (en) * | 2016-09-14 | 2017-02-15 | 浙江吉利控股集团有限公司 | Accident data recording system and method and vehicle |
| CN110050296A (en) * | 2016-12-07 | 2019-07-23 | 杰森·贝利 | For saving and handling the method and system of vehicle crash data evidence |
| CN114030439A (en) * | 2021-11-08 | 2022-02-11 | 奇瑞汽车股份有限公司 | Configuration method and device of air bag controller and computer storage medium |
| CN114445932A (en) * | 2022-02-28 | 2022-05-06 | 重庆长安汽车股份有限公司 | Device and method for monitoring and recording vehicle behavior data |
-
2012
- 2012-11-01 CN CN 201220572164 patent/CN203084789U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413413A (en) * | 2013-07-26 | 2013-11-27 | 南通和同信息科技有限公司 | Comprehensive operation management platform for multi-model new energy vehicles |
| CN103413413B (en) * | 2013-07-26 | 2017-02-01 | 南通鸿鹄信息技术有限公司 | Comprehensive operation management platform for multi-model new energy vehicles |
| CN106394467A (en) * | 2016-09-14 | 2017-02-15 | 浙江吉利控股集团有限公司 | Accident data recording system and method and vehicle |
| CN110050296A (en) * | 2016-12-07 | 2019-07-23 | 杰森·贝利 | For saving and handling the method and system of vehicle crash data evidence |
| CN114030439A (en) * | 2021-11-08 | 2022-02-11 | 奇瑞汽车股份有限公司 | Configuration method and device of air bag controller and computer storage medium |
| CN114445932A (en) * | 2022-02-28 | 2022-05-06 | 重庆长安汽车股份有限公司 | Device and method for monitoring and recording vehicle behavior data |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20201101 |