CN202837992U - Vehicle monitoring device based on GPRS network - Google Patents

Abstract

The utility model discloses a vehicle monitoring device based on a GPRS network. The vehicle monitoring device based on the GPRS network includes a shell. The vehicle monitoring device based on the GPRS network is characterized in that a main processor is arranged in the shell; the main processor is connected with a GPRS module, a GPS module, a CAN communication module, a double-shaft gyroscope sensor, a Flash data storage and a real-time clock circuit respectively; and a group of indicating lamps, a GPS antenna interface, a device plug connector, an installation hole and an SIM card socket are arranged on the shell. The utility model provides a safe and effective vehicle locking control strategy for loan sales management.

Description

A kind of vehicle monitoring equipment based on GPRS network

Technical field

The utility model relates to the vehicle monitoring apparatus field, specifically, relates to a kind of vehicle monitoring equipment based on GPRS network.

Background technology

Telematics is the compound word of telecommunications (Telecommunications) Yu the information science (Informatics) of the communications field.Along with the development of economic globalization, logistics had become the important component part of international economic system already, and had made important contribution for " pulling " national economy.And the traffic problems that this huge transportation colony brings also can not look down upon, and especially exist on-the-spot confusion behind the accident, and evidence obtaining is difficult, the realistic problem that injures and deaths are large.In addition, domestic logistics is started late, and conevying efficiency is low, and cost is high.Therefore how analyze the reason of the generation of traffic hazard by advanced person's technological means, to evade the generation of similar accident, and the ladder of management that relies on science promotes the development of logistics transportation industry, improves conevying efficiency, becomes the major subjects of Telematics equipment development.

The present domestic manufacturer that numerous vehicle monitoring equipment are arranged, through development in a few years, reaching a certain scale effect, at aspects such as navigation, amusement and service centre's calling for good service and user are provided with car experience.Along with the development of automotive electronic technology, the data take CAN bus etc. as carrier can provide important vehicle operating information as the user.For the protection to its knowledge property right, not all bus message all be the diagnostic data of external disclosure, especially vehicle provide very few especially, this further deepen for the manufacturer of vehicle monitoring device end product function setting obstacle.The utility model has provided the data retransmission function of a kind of all data stream, simultaneously by this equipment user except position, speed and the altitude figures that can recognize exactly vehicle, can also obtain crucial CAN data message and the diagnostic message of vehicle.

Especially commercial vehicle is as the means of production for automobile, and the user often is not full payment when buying, and takes mode by stages to buy.For the dealer of vehicle, as run into the not good user of credit and delay and refund or even escape and refund, will bring financial risks for dealer, car load enterprise and even social economy's operation.Early stage GPS equipment has increased the function that pin is borrowed control for this reason, and these products are at the dangerous approach of having implemented often to adopt when pin is borrowed control oil-break, outage.But the drawback of doing so also is clearly, at first, if Vehicle Driving Cycle on road to its by force oil-break, outage, its danger is self-evident; Secondly the pin of realizing by oil circuit and the circuit of change vehicle is borrowed management, is easy to be found and repair by the user.

The utility model content

The technical problems to be solved in the utility model provides a kind of vehicle monitoring equipment based on GPRS network, has proposed a kind of more safety and effective pin and has borrowed lock car control strategy.

The utility model adopts following technological means to realize the utility model purpose:

A kind of vehicle monitoring equipment based on GPRS network comprises shell, it is characterized in that: be provided with primary processor in the described shell, described primary processor connect respectively GPRS module, GPS module, CAN communication module, The dual spindle gyroscopes sensor, The Flash data-carrier storeWith Real time clock circuit, be provided with one group of pilot lamp, gps antenna interface, apparatus connecting spare, mounting hole and sim card socket on the described shell.

As the further restriction to the technical program, described pilot lamp comprises power light, GPRS relay indicating light, ERROR pilot lamp, GPS relay indicating light, LINK pilot lamp.

As the further restriction to the technical program, described GPRS module is connected with the GPS module and is connected the 3.3V insulating power supply.

As the further restriction to the technical program, described Real time clock circuitConnect backup battery.

Compared with prior art, advantage of the present utility model and good effect are: 1, be difficult for obliterated data information, in the situation that the GPRS network situation can pass back in real time with the equipment data server of assigned ip, equipment carries otherwise data are stored into The Flash data-carrier storeIn, when treating available network again with data upload.

2, high performance GPS module, ET-662 based on SiRF STAR III kernel is a compact conformation, cost performance is high and the GPS engine modules of low-power consumption, can follow the tracks of simultaneously 20 gps satellites, and have in the situation that the weak ability that realizes quick TTFF function of signal, so that this module is particularly suitable for the applied environment of automobile, adopt the backup battery power supply, can lock rapidly gps satellite after being convenient to vehicle and re-powering.

3, perfect Remote Diagnosis System is supported the diagnosis request service based on the ISO15765 agreement comprehensively, and diagnostic data can be sent to server by GPRS network, to make up the Remote diagnostic system.

4, remotely updating program function, the developer can send to this equipment with up-to-date application code by the GPRS module easily, transfer the equipment of program, Bootloader has found just fresh code to be write set Flash section after the available redaction program after powering on next time, and automatically runs in the program after the upgrading.

5, abundant vehicle operation data passback, this equipment is supported the application layer protocol of J1939, and returned most CAN bus data, especially returned the total kilometrage that the user is concerned about the most, total oil consumption, accumulative total running time and the information such as instant engine rotating speed, the speed of a motor vehicle by tight mathematical operation.

6, reliable hardware circuit design, the circuit of this equipment all adopts ripe design proposal and outstanding supplier, has perfect fault diagnosis functions, outstanding EMC performance and anti-EMI characteristic.

7, safe and reliable pin is borrowed lock car function, and this equipment can be borrowed lock car control strategy for the user provides a kind of safe and reliable pin.Borrow lock car mode with respect to traditional pin, this mode is more safe and reliable, and can corresponding lock car mode be set according to the degree of user's promise breaking.

Description of drawings

Fig. 1 is the functional-block diagram of the utility model preferred embodiment.

Fig. 2 is the external structure schematic diagram of the utility model preferred embodiment.

Fig. 3 is the operational flow diagram of the utility model preferred embodiment.

Fig. 4 is the utility model GPRS network communications rack composition.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment the utility model is done further to describe in detail.

Referring to Fig. 1-Fig. 4, the utility model comprises shell 1, power light 2, GPRS relay indicating light 3, ERROR pilot lamp 4, GPS relay indicating light 5, LINK pilot lamp 6, gps antenna interface 7, apparatus connecting spare 8, mounting hole 9, sim card socket 10 and SIM card 11, be provided with primary processor in the described shell 1, described primary processor connects respectively the GPRS module, the GPS module, the CAN communication module, the dual spindle gyroscopes sensor, Flash data-carrier store and real time clock circuit are provided with one group of pilot lamp on the described shell 1, gps antenna interface 7, apparatus connecting spare 8, mounting hole 9 and sim card socket 10.

Described pilot lamp comprises power light 2, GPRS relay indicating light 3, ERROR pilot lamp 4, GPS relay indicating light 5, LINK pilot lamp 6.

The system hardware composition frame chart of being described by accompanying drawing 1 as seen, the utility model has been used a LPC2346 primary processor (MPU) based on the ARM7TDMI-S kernel, dominant frequency is 72MHz, program Flash data-carrier store with 512Kb, and the integrated abundant abundant peripheral hardware such as GPIO, SPI, UART, I2C, Ethernet, CAN and USB, provide perfect hardware resource support for making up this application system.The compiler of LPC2346 is supported the development platform of C language, and embedded artificial debugging interface can use existing debugging acid to carry out program debug easily.GPRS module and GPS module have been used the 3.3V power supply of band isolation, have solved the most common failure that the GPRS module is restarted because power supply is unstable.With the clock/calendar module of backup battery, when device power, use the vehicle power supply power supply, can be by the button cell power supply that carries behind the disconnecting external power supply, within the normal tenure of use of equipment, this button cell does not need to change.Based on the accurate clock in the gps signal, equipment can carry out the self calibration of time, so the time of equipment does not need to look after and guide, in these data that guaranteed to upload is arranged the accurate GMT standard time.The GPRS module is supported GSM/DCS double frequency module, has the standard AT command interface, and embedded ICP/IP protocol can provide the business such as GSM voice, SMS short message and GPRS online, has preferably cost performance and reliability, is fit to the application demand of automotive electronics.

By the equipment outside drawing shown in the accompanying drawing 2 as seen, at an end of equipment five pilot lamp are arranged, the 2nd, power light is as long as this lamp is with regard to Chang Liang after powering on; The 5th, GPS relay indicating light, this lamp can normally glimmer when GPS searches out the satellite more than four and can send data to primary processor; The 3rd, GPRS relay indicating light can start to log in request message to the fixing server of IP after the device power.After logging in successfully, send this pilot lamp of packet at every turn and all can glimmer; If equipment Inspection, then can drive ERROR pilot lamp 4 Chang Liang to fault is arranged with indication fault.There is the equipment connector 8 of 25 pins on the top of equipment, is used for connecting the pilothouse wire harness of vehicle.The 7th, external gps antenna interface, this interface is provided with uncoupling gear, prevents that antenna from getting loose.The pilot hole 9 that the both sides of equipment have the equipment of being convenient to install is so that very convenient when installing onboard.

Accompanying drawing 3 has been described the workflow after the device power, and as can be seen from the figure this equipment is supported the multi-task scheduling mechanism of timeslice poll, and this scheduling mechanism can in the real-time of farthest guaranteeing system, not wasted the processing power of primary processor.After the device power, at first carry out system initialization, mainly comprise the register and the peripheral hardware that configure MPU, comprise that also gps satellite search and GPRS far-end server log in.Finished after the initial work, equipment is the fetch equipment CAN message data that need to return (such as message such as LFC, the EEC1 of J1939 protocol definition and VDHR) periodically, and deposit it in GPRS buffer zone, primary processor is crossed the UART interface with the data communication device in the GPRS buffer zone and is passed to the GPRS module when treating that timeslice that the CAN data send arrives, and the GPRS module is packaged into the message that meets ICP/IP protocol and sends to server.Gps data to the transmission principle of server similarly.If receive the order of borrowing the lock car from the pin of SMS messaging or GPRS, equipment can send corresponding control command to Engine ECU according to the requirement of lock car order, so that engine enters specific low-speed operation mode, this pattern can be so that car operation have economic benefit under the prerequisite of guaranteeing user's traffic safety, forces it to pay off when time by stages.Engine need to regularly receive the heartbeat from the Heartbeat(of primary processor) message, whether online with affirmation equipment.If equipment is illegally removed, engine can not get the Heartbeat(heartbeat) message can enter the pattern of removing, and in fact also is a kind of low engine speed operating condition.The dynamic encryption algorithm based on SEED-KEY mechanism of independent development has been used in communication between equipment and the engine, and the possibility that is cracked does not almost have.

The GPRS communication architecture that communication relies between equipment and the server is introduced in accompanying drawing 4, and after the GPRS module powered on, initialization module logged in GPRS network, successfully be connected to the server of assigned ip after, by the time interval transmission of monitoring data of appointment.Because the GPRS terminal is connected on the network and can automatically go offline during without data transmission, always online in order to guarantee the GPRS terminal, the utility model proposes the concept of GPRS heartbeat packet, namely the GPRS module sent a GPRS heartbeat packet every 3 minutes to server without data transmission the time, server is replied answer after receiving heartbeat, thereby guarantees that the GPRS terminal is always online.By accompanying drawing 4 as seen, the monitoring central server with fixed ip address accesses the private network interface that commmunication company provides, and signs in to Internet with this.The GPRS module signs in to the GPRS backbone network by the SGSN node specifically, enters into the Internet network by the GGSN gateway again, and the monitoring central server that is routed at last the IP appointment is carried out exchanges data, thereby has realized the function of remote data transmission.In addition, guarantee that the IP address is fixing can also adopt public network IP, but compare with the commmunication company private network, the lease expenses of public network IP is high, has improved the operating cost of whole system, so the utility model has used the mode by the private network access Internet of commmunication company.Because complete ICP/IP protocol that the GPRS module is embedded so that the communication program of this module especially the exploitation of Internet interactive program become convenient, reliable, this also is a foundation selecting this module.

Certainly; above-mentioned explanation is not limitation of the utility model; the utility model also is not limited only to above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also belong to protection domain of the present utility model.

Claims (4)

1. vehicle monitoring equipment based on GPRS network, comprise shell, it is characterized in that: be provided with primary processor in the described shell, described primary processor connects respectively GPRS module, GPS module, CAN communication module, dual spindle gyroscopes sensor, Flash data-carrier store and real time clock circuit, is provided with one group of pilot lamp, gps antenna interface, apparatus connecting spare, mounting hole and sim card socket on the described shell.

2. described vehicle monitoring equipment based on GPRS network according to claim 1, it is characterized in that: described pilot lamp comprises power light, GPRS relay indicating light, ERROR pilot lamp, GPS relay indicating light, LINK pilot lamp.

3. described vehicle monitoring equipment based on GPRS network according to claim 1 is characterized in that: described GPRS module is connected with the GPS module and is connected DC transfer circuit.

4. described vehicle monitoring equipment based on GPRS network according to claim 1 is characterized in that: described Real time clock circuitConnect backup battery.

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