CN208722049U - A kind of electric car long-distance monitorng device - Google Patents

Abstract

A kind of electric car long-distance monitorng device, including car-mounted terminal, the car-mounted terminal include microprocessor module, power module, data acquisition module, data transmission module, memory module, 3G module, GPS module, Ethernet debugging interface module.The microprocessor module is separately connected 3G module, GPS module, CAN controller module, memory module, Ethernet debugging interface module；The 3G module connects remote monitoring center by Internet network.Using utility model device, car-mounted terminal reads CAN bus information in electric car by CAN controller module, acquire the real time data of vehicle operation, obtain speed, mileage travelled, battery information, motor information, the switching value and analog quantity of fault message and other critical components including vehicle, the real-time position information of vehicle is obtained by GPS module simultaneously, Internet network is sent by 3G module again, microprocessor module is analysis integrated by carrying out to data, sends remote monitoring center to and realizes to monitoring vehicle acquisition information processing.

Description

A kind of electric car long-distance monitorng device

Technical field

The utility model relates to electric vehicle engineering field more particularly to a kind of electric car long-distance monitorng devices.

Background technique

As global shortage of resources, environmental problem become increasingly conspicuous, tapping a new source of energy increasingly becomes with renewable energy The common recognition of international community.The report that provides of EIA is affixed one's name to according to american energy information to show, from present to the year two thousand thirty, world energy sources Total quantity consumed is estimated to increase by 50%, this will cause a large amount of Fossil fuel consumption and pollutant emission, and traditional fuel automobile institute The tail gas of discharge will account for 25% or more of total release.It is estimated according to report, the motor vehicle emission amount in China is only secondary It is ranked the second in the world in the U.S., automotive emission has become the main source of China big city pollution.Country vigorously advocates Energy structure optimizing develops new-energy automobile etc. to promote Green Travel to be increasingly becoming common recognition.

Electric vehicle structure is complicated, the core as electric car such as traction electric machine, power battery pack, entire car controller Part, their performance quality are directly related to practicability and the safety of vehicle.The typical battery group pattern of electric car is by multiple Battery module composition, each module includes many independent battery units and protection circuit again.Artificial off-line monitoring battery Although voltage and other parameters information can be analyzed, due to testing the variation of environment, off-line analysis can not be complete React the working condition of battery under really operating condition.In addition new in order to take precautions against in policies and regulations level, National Industrial and informationization portion The chaotic expansive of emerging industry to the certain access threshold of new-energy automobile factory settings, and requires delicate female state member automobile raw The operating status of the new-energy automobile of each demonstration operation must be monitored in real time by producing enterprise.

Summary of the invention

Technical problem to be solved in the utility model is in view of the above shortcomings of the prior art, and to provide a kind of electronic vapour Vehicle long-distance monitorng device, slave computer car-mounted terminal read CAN bus information in electric car by CAN controller, acquire vehicle The real time data of operation, obtain include the speed of vehicle, mileage travelled, battery information, motor information, fault message and other The switching value and analog quantity of critical component, while by the real-time position information of GPS geo-location system acquisition vehicle, then pass through 3G module sends Internet network, and monitoring center is analysis integrated by carrying out to data, sends remote monitoring system realization to Information processing is acquired to monitoring vehicle.

The technical solution that the utility model is taken are as follows:

A kind of electric car long-distance monitorng device, including car-mounted terminal, the car-mounted terminal include microprocessor module, electricity Source module, data acquisition module, data transmission module, memory module, 3G module, GPS module, Ethernet debugging interface module. The microprocessor module is separately connected 3G module, GPS module, CAN controller module, memory module, Ethernet debugging interface Module；The 3G module connects remote monitoring center by Internet network.

The power module is separately connected microprocessor module, 3G module, CAN controller module.

The microprocessor module connects reset circuit, and the electric discharge that reset circuit increases diode and capacitor composition is returned Road, using+3.0V ~ 3.3V working environment.

The microprocessor module uses the microprocessor of AT91SAM9G45 type；The microprocessor of AT91SAM9G45 type has Two-way spi bus interface and CAN controller module are communicate through a serial port.

The microprocessor module connects USB interface.

The 3G module uses SIM6320C chip, to realize the wireless transmission function of acquisition data.

The GPS module use SIM28 chip, SIM28 chip by external antenna reception satellite-signal, antenna directly with The RF_IN pin of SIM28 chip connects.

The power module includes+12V battery, and 12V battery is separately connected power conversion chip LTC3417, power supply Conversion chip SGM2019, power conversion chip LM2596S.

The memory module includes memory RAM, SD storage card.

The Ethernet debugging interface module uses ethernet controller chip DM9161, Lai Shixian Ethernet interface function Energy.

The modules of the car-mounted terminal are mounted in aluminum alloy casing.

Using a kind of electric car long-distance monitorng device of the utility model, car-mounted terminal is read by CAN controller module CAN bus information in electric car, the real time data of acquisition vehicle operation, obtains speed, mileage travelled, battery including vehicle Information, motor information, the switching value and analog quantity of fault message and other critical components, while vehicle is obtained by GPS module Real-time position information, then by 3G module send Internet network, microprocessor module is by analyzing data It is comprehensive, it sends remote monitoring center to and realizes to monitoring vehicle acquisition information processing.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples:

Fig. 1 is the power supply transition diagram of the utility model.

Fig. 2 is the reset circuit figure that the utility model increases discharge loop.

Fig. 3 is the hardware connection diagram of the utility model.

Specific embodiment

As shown in figure 3, a kind of electric car long-distance monitorng device, including car-mounted terminal, the car-mounted terminal include micro- place Manage device module, power module, data acquisition module, data transmission module, memory module, 3G module, GPS module, Ethernet tune Try interface module.

The microprocessor module is separately connected 3G module, GPS module, CAN controller module, memory module, Ethernet Debugging interface module；The 3G module connects remote monitoring center by Internet network.

The power module is separately connected microprocessor module, 3G module, CAN controller module.

The microprocessor module connects reset circuit, and the basic function of reset circuit is that anti-locking system is just being powered on or answered The electromagnetic interference of position makes system errors, by reentering init state, until whole system is stablized.The utility model Reset circuit in device can also force that CPU and other component is made to be in determining working condition by user key-press.It is vehicle-mounted It is 5V ± 5% that terminal, which works normally the supply voltage needed,.As shown in Fig. 2, reset circuit increase diode and capacitor composition Discharge loop, using+3.0V ~ 3.3V working environment, reseting pulse width 200ms, RESET, which is set as output low level, to be had Effect.

The microprocessor module uses the microprocessor of AT91SAM9G45 type；It uses ARM926EJ-S kernel, has Up to 400MHz operation speed, is able to satisfy the performance requirement of vehicle carried data collecting completely.It also has the spies such as high reliability, low-power consumption Point.ARM9 embedded microprocessor is the core of car-mounted terminal, can mitigate microprocessor burden, improves its job stability.

Information exchange on electric car between each controller is completed by CAN bus.CAN bus is in modern vapour As an information transmitting and exchange system in vehicle, each controller realizes status monitoring and the control to vehicle by shared information System.In utility model device, the microprocessor of AT91SAM9G45 type has two-way spi bus interface and CAN controller module Communicate through a serial port.The physical interface of CAN bus uses PCA82C251 transceiver, has and resists impulse disturbances and protection The effect of bus transfer ability.In utility model device, in order to further increase the anti-interference ability of bus, CAN control Device module also uses ADuM1201 two-channel digital isolator and separates CAN controller and CAN transceiver.ADuM1201 isolator Two independent channel isolations are provided, can support different data rate and channel configuration.Not with common optical coupling isolator Together, ADuM1201 isolator possesses unique new property, can ensure that signal input or powers on, the logical transition under power loss condition Correctness.

The microprocessor module connects USB interface.

The 3G module uses SIM6320C chip, to realize the wireless transmission function of acquisition data.SIM6320C chip Embedded Transmission Control Protocol, supports UART serial defeated, can directly connect on embedded system USB_HOST interface.SIM6320C core The advantages that piece has power small, and input voltage is low, and operating ambient temperature range is big.

The GPS module uses SIM28 chip, which is the GPS receiver of an independent highly sensitive low-power consumption Chip.SIM28 chip positioning function is very powerful, and positioning accuracy is high.The chip volume module is 16 × 12.2 × 2.4mm, is opened The time is moved less than 1 second, assistant starting primary positioning time supported maximum 10Hz positioned update rate, and met vehicle less than 13 seconds Positioning requirements.The chip operating voltage is+3.3V, and location data transmitting-receiving is realized by pin TXD, RXD on SIM28 chip, SIM28 chip positioning needs to receive satellite-signal by external antenna, and antenna is directly connect with the RF_IN pin of SIM28 chip.

The power module includes+12V battery, and the battery feed of+12V passes through in addition to supply vehicle itself use Filtering decompression (12V turns 5V) supply USB_HOST is used；After be further separated into the power supplys such as LTC3417, SGM2019, LM2596S conversion The input terminal of chip, it is converted to be supplied respectively to ARM system, 3G module, CAN controller module at+4.2V DC ,+3.3V DC. Inside ARM core board by Power Management Unit (PUM) conversion all the way+3.3V for circuits such as internal NAND, system starting configurations It uses.+ 12V the bus of accumulator of electric car is connected respectively to three using LTC3417 chip as the power detecting unit of core, And it is connected on connector by the current sense resistor of 0.005 Ω, 2W.Power supply Change-over knot composition such as Fig. 1 institute of whole device Show.

The memory module includes memory RAM, SD storage card.For guarantee acquisition information accuracy rate and data it is complete Whole property prevents because network connection interruption causes loss of data, and system every time will before sending data to remote monitoring center Automaticly inspect the connection of 3G module and the communication server.By the first interim storage of the data of acquisition if connection is already off On the SD storage card of car-mounted terminal, retransmitted again after waiting networks smooth.In utility model device, on car-mounted terminal It is integrated with a SD card seat, it uses four line SD card interfaces, and the maximum storage of support is 128GB, and can be plugged.

The Ethernet debugging interface module uses ethernet controller chip DM9161, Lai Shixian Ethernet interface function Energy.Ethernet main function is that connection PC machine carries out the downloading of slave computer engineering and debugging.In debugging, by the IP that PC machine is arranged Address is in it in same network segment with slave computer, and the telnet service for being then turned on PC machine can be logical by cable and slave computer Letter.Since the microprocessor of AT91SAM9G45 type does not have integrated ethernet controller.Ethernet is selected in utility model device Controller chip DM9161 realizes Ethernet interface function.The chip is the very high singlechip Ethernet object of a integrated level Layer transceiver is managed, has many advantages, such as that compatibility is strong, it is low in energy consumption, cheap.

RS-232 serial communication is widely used between different hardware devices due to having many advantages, such as that interface is simple, communication rate is high Be in communication with each other.In utility model device, the serial interface chip that car-mounted terminal uses is SP3232EEA level conversion core Piece, different modules can conveniently be carried out data transmission by data transmission, data receiver, signal ground.

In order to guarantee the safety and reliability of device, the modules of the car-mounted terminal are mounted on aluminum alloy casing It is interior.

Claims (8)

1. a kind of electric car long-distance monitorng device, including car-mounted terminal, it is characterised in that: the car-mounted terminal includes micro process Device module, power module, data acquisition module, data transmission module, memory module, 3G module, GPS module, Ethernet debugging Interface module；

The microprocessor module is separately connected 3G module, GPS module, CAN controller module, memory module, Ethernet debugging Interface module；The 3G module connects remote monitoring center by Internet network；

The power module is separately connected microprocessor module, 3G module, CAN controller module；

The modules of the car-mounted terminal are mounted in aluminum alloy casing；

The microprocessor module is connected with reset circuit, and reset circuit increases the discharge loop of diode and capacitor composition.

2. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the microprocessor module is adopted With the microprocessor of AT91SAM9G45 type；The microprocessor of AT91SAM9G45 type has two-way spi bus interface and CAN controller Module is communicate through a serial port.

3. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the microprocessor module connects Connect USB interface.

4. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the 3G module uses SIM6320C chip, to realize the wireless transmission function of acquisition data.

5. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the GPS module uses SIM28 chip, SIM28 chip receive satellite-signal by external antenna, and antenna directly connects with the RF_IN pin of SIM28 chip It connects.

6. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the power module include+ 12V battery, 12V battery are separately connected power conversion chip LTC3417, power conversion chip SGM2019, power supply conversion core Piece LM2596S.

7. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the memory module includes depositing Reservoir RAM, SD storage card.

8. a kind of electric car long-distance monitorng device according to claim 1, it is characterised in that: the Ethernet debugging interface Module uses ethernet controller chip DM9161, Lai Shixian Ethernet interface function.