CN201177836Y - Information recorder for hybrid power automobile - Google Patents

Abstract

The utility model provides a vehicle information recorder of a hybrid electric vehicle, which comprises a communication module, a data processing module and a mass data memory module. The communication module comprises a CAN communication module, a K communication module and a serial-port communication module; the CAN communication module and the K communication module form a corresponding bus connection with a whole vehicle and acquire data that is transmitted on a bus; the serial-port communication module is connected with a liquid crystal display module to display the fault information of electronic control units of all modules in the vehicle as well as the status information of the vehicle such as vehicle speed, etc. The vehicle information recorder adopts a fault diagnosis K wire to combine with a prevalent CAN wire to acquire and find the fault in time; the data can be stored to a USB disk by adopting a USB interface so as to separate from a PC, and the recorder can also be connected with the PC. According to the actual requirements, the data occurring around the storing fault is stored when fault occurs, and all data can be also stored for a long time. The vehicle information recorder has the advantages of simple design, low cost, low investment, convenient use, and worthiness of popularization and application.

Description

Vehicle information recorder of hybrid power vehicle

Technical field

The utility model belongs to the automotive electronics applied technical field, relates to bus communication, data acquisition, storage and the fault detection technique of automobile, is specifically related to a kind of hybrid vehicle vehicle running state, automobile each ECU (Electrical Control Unit) state recording and demonstration.The needs that are particularly suitable in hybrid vehicle performance history or the driving process are gathered great number tested data, and need make the occasion of post-processed.

Background technology

More and more universal along with automobile, and petroleum resources exhaustion and environmental pollution serious day by day day by day developed the focus that new energy saving and environment friendly automobile becomes everybody research.Hybrid vehicle is exactly the new automobile with this function, it is the new lover of motor-dom, technology also is in continuous development stages, building block technique used on the car is also immature, these crucial parts of electrokinetic cell particularly, its quality directly has influence on the safety of dynamic property, economy, discharging even the car load of automobile.Data acquisition to hybrid vehicle power entire car and some ECU (Electrical Control Unit), help developer's understanding hybrid vehicle and the operation conditions of its ECU (Electrical Control Unit) under different operating modes, can take corresponding countermeasure according to post analysis to Information Monitoring.

At present, existing drive recorder exists problems, and storer generally adopts the EEPROM or the FLASH of plate embedding, and the memory capacity of data is little, and the record cycle is short.When adopting RS232 serial ports transmission data, speed is slow, though speed is fast when adopting the USB transmission, when extracting data, they be unable to do without the participation of PC, operate not to be easily realization cost height.The kind of the signal of gathering is few, does not all comprise the collection of failure message.Special fault detect instrument can only be regular detecting, the service data that can not gather correlation module, the demand data when not satisfying exploitation.And external on-vehicle information record register system not only cost an arm and a leg, and some function can not satisfy the demand of oneself.Domestic also do not have specially to carry out data acquisition on CAN bus and the K line at hybrid vehicle, and carry out the data acquisition system (DAS) of the In-vehicle networkingization of flash disk mass memory and demonstration.Adopt USB mechanics of communication etc. in system, it is more convenient that total system is operated in the car load real work.

Summary of the invention

The purpose of this utility model is for overcoming the weak point of prior art, design a kind of data acquisition recorder of Hybrid Vehicle, expanded the function of datalogger, can also can gathering failure message when the record general data.Native system also leaves serial communication interface with LCD MODULE.Can directly link to each other the data of gather and transmit data with PC, more can pass through the HOST USB interface the data mass memory to flash disk or portable hard drive.Realized the easy of data acquisition.

The technical solution of the utility model is as follows:

A kind of vehicle information recorder of hybrid power vehicle, this vehicle information recorder of hybrid power vehicle comprises the CAN communication module, the K communication module, serial communication modular, CPU processing module and usb communication module, the CAN communication module, K line communication module, serial communication modular, the usb data memory module all links to each other with the CPU processing module, wherein CAN communication module and K line communication module are the interface modules of the data acquisition of this registering instrument and hybrid vehicle, be connected with the K line with the CAN bus of hybrid vehicle respectively, the data of transmitting on hybrid electric vehicle CAN bus and the K line are through the CAN communication module, after the K communication module, after handling via the CPU processing module again by the usb communication module the data mass memory in flash disk or portable hard drive, or give PC data upload by the usb communication module, serial communication modular sends corresponding data information to demonstration that LCD MODULE is carried out the information of vehicles data.The vehicle information recorder of hybrid power vehicle that the utility model proposed, provide a kind of and be connected the car load image data with the K line by the CAN bus, data and special LCD MODULE by the collection of flash disk mass memory show corresponding fault and car load recording of information instrument.Like this, in image data, just can directly extract lot of data, convenient and swift, do not need the participation of computing machine or other equipment, satisfy the demand that a large amount of experimental datas are gathered.Information transmitted on the general bus not only can be gathered by system, also combine fault detection capability, can gather the failure message of each ECU (Electrical Control Unit) on the hybrid vehicle, its failure message is closed the demonstration of whole vehicle state information by the LCD MODULE of special use, can find fault timely, and first data of gathering when breaking down targetedly constantly that can be after finding fault are analyzed, and having significantly reduced work and having emphasized, have improved work efficiency.

Description of drawings

Fig. 1 is the one-piece construction block diagram of vehicle information recorder of hybrid power vehicle;

Fig. 2 is the CAN communication interface circuit block diagram of vehicle information recorder of hybrid power vehicle;

Fig. 3 is the K communication interface circuit block diagram of vehicle information recorder of hybrid power vehicle;

Fig. 4 is the serial communication interface circuit block diagram of vehicle information recorder of hybrid power vehicle;

Fig. 5 is the usb circuit figure of vehicle information recorder of hybrid power vehicle;

Fig. 6 is the circuit theory diagrams of vehicle information recorder of hybrid power vehicle.

Embodiment

According to Figure of description the technical solution of the utility model is further elaborated below.

In order to realize above function, this registering instrument is by forming with lower module: CAN communication module 4, K communication module, CPU module, power module, serial communication modular, crystal oscillator module, reseting module, the USB communication module, LCD MODULE, concrete structured flowchart is as shown in Figure 1.CAN communication module and K communication module are responsible for the collection of data, they respectively with automobile on the CAN bus link to each other with the K line.The CPU module is responsible for reception, processing and the transmission of data, links to each other with each functional unit of system.Power module is powered to registering instrument, and the chip power pin of powering with the needs in the registering instrument links to each other.Serial communication modular is responsible for sending the data after handling among the CPU to liquid crystal display, links to each other with LCD MODULE.The crystal oscillator module links to each other with CPU, and effect is to provide external clock source for CPU.Reseting module links to each other with CPU, and effect is when the program fleet among the CPU or moves and allow system reset rerun when undesired.Usb interface module is responsible for sending flash disk or PC to what handled to, links to each other with external memory storage.LCD MODULE is responsible for showing the information that will show that transmits from serial ports.

The TJA1050[1 that adopts Philips company to produce in the CAN communication module] the bus transceiver driving, this bus transceiver links to each other with DSP with the CAN interface.Corresponding C ANH, CANL are corresponding to link to each other.Also must connect the terminal resistance in one 120 Europe between CANH and CANL, corresponding reception, transmitting terminal receive with the transmission pin with DSP2812 corresponding C AN and link to each other, as shown in Figure 2.Two-way, half duplex communication interface chip MC33290[2 that K line communication module adopts motorola inc to develop for vehicle diagnostics specially], can realize the level conversion of serial ports and K line, the reception of reception after the conversion, transmitting terminal and the corresponding serial communication interface A of DSP2812 (SCIA) with send pin and link to each other K line interface on the automobile and control chip MC33290[3] the ISO pin link to each other as shown in Figure 3.The other serial communication modular 3 of registering instrument adopts the MAX3232 level transferring chip of MAXIM company to realize and the LCD MODULE communication, and its reception accordingly, transmitting terminal link to each other with the transmission pin with the reception of the corresponding serial communication interface B of DSP2812 (SCIB).Serial ports B is used for the connection of LCD MODULE, constitutes a personal-machine interactive system, and the serial communication interface circuit as shown in Figure 4.LCD MODULE in this registering instrument is an independent system, also can comprise the keyboard operation unit.That CPU adopts is the DSP2812[4 of TI company], it has very strong interface capability and embedding ability, because there is very big storer inside, does not need to extend out program storage; Because USB adopts is the singularity of the USB control chip function of parallel interface transmission mode and employing, do not need to extend out data-carrier store again yet.Power module is used for the power supply of each module.We adopt the 12V power supply on the automobile, changeing the DC/DC[5 of 5V through 12V] switching power source chip is 5V with voltage transitions, and then the power source special chip TPS767D318[6 by DSP2812] be 3.3V and 1.8V with the 5V voltage transitions, so just can satisfy the specific (special) requirements of DSP2812 supply voltage 3.3V and core voltage 1.8V, USB and LCD MODULE all adopt independent 5V power supply, and USB interface provides power supply for flash disk.Reseting module just is meant that reset circuit is the indispensable part of system, and it is connected with the reset pin of DSP, can allow system reset rerun when program fleet or irregular operating.The crystal oscillator module utilizes external clock reference to provide clock signal for chip, selects the external passive crystal oscillator to link to each other with the X2 pin with the X1/XCLKIN pin of DSP, carries out frequency multiplication by DSP phase-locked loop pll circuit again.The USB communication module is to allow data directly store the hardware foundation of flash disk into, is here to adopt simple hardware circuit to add that complicated software realizes the storage of USB flash disk.Usb circuit adopts Nanjing to ooze a high price of permanent Electronics Co., Ltd.'s property than the master/slave controller chip CH375SV[7 of Embedded USB], its interface circuit figure is as shown in Figure 5.8 bi-directional data interface pin D0-D7 of CH375SV link to each other with the corresponding XD0-XD7 of DSP; Read gate input pin RD#, write gate input pin WR#, reset pin RST# are connected respectively to read gate pin, write gate pin and the input pin that resets of DSP; Sheet selects the CS2 control of input pin CS# by DSP; Address input pin A0 links to each other with the I/O mouth pin IOF0 of DSP respectively; The interrupt pin of interrupt pin and DSP links to each other.The VDD of USB interface, GND pin provide power supply for flash disk, and DATA+ by CH375SV and DATA-give flash disk or PC transmission data.Wherein USB_HOST interface J1 is connected with USB_DEVICE interface J2 and sees Fig. 5, the power supply of USB_DEVICE interface is provided by PC, when this interface connects PC, can give status signal that connects PC of DSP, allow the pattern of DSP change over to from mode state, this signal pins links to each other with the I/O mouth pin IOF1 of DSP.In addition, CH375SV needs independent external crystal-controlled oscillation provide clock signal for it, for the stability of system adopts the active crystal oscillator of 12MHz to be connected with CLK/X1.

After the CAN bus of system and automobile and the special interface of K line are connected, connect with the mains, USB interface is inserted flash disk, the pilot lamp of flash disk brightens, and is in ready state, and man-machine interactive system is connected by serial communication, LCD MODULE also is in ready state, in case system begins image data, after the processing by DSP, system just passes to flash disk endlessly with data, and the information such as fault that will show give human-computer interaction module, show by liquid crystal display.The circuit diagram of system as shown in Figure 6.

Claims (5)

1, vehicle information recorder of hybrid power vehicle is characterized in that:

This vehicle information recorder of hybrid power vehicle comprises the CAN communication module, K line communication module, serial communication modular, CPU processing module and usb communication module, the CAN communication module, the K communication module, serial communication modular, the usb data memory module all links to each other with the CPU processing module, wherein CAN communication module and K line communication module are the interface modules of the data acquisition of this registering instrument and hybrid vehicle, be connected with the K line with the CAN bus of hybrid vehicle respectively, the data of transmitting on hybrid electric vehicle CAN bus and the K line are passed through the CAN communication module respectively, after the K line communication module, after handling via the CPU processing module again by the usb communication module the data mass memory in flash disk or portable hard drive, or give PC data upload by the usb communication module, serial communication modular sends corresponding data information to demonstration that LCD MODULE is carried out the information of vehicles data.

2, vehicle information recorder of hybrid power vehicle according to claim 1, it is characterized in that: adopt CAN communication to communicate by letter and carry out the collection of data with the K line, the data of gathering from communication bus comprise the state parameter and the failure message of each ECU (Electrical Control Unit) of hybrid vehicle, and the state parameter information of car load.

3, vehicle information recorder of hybrid power vehicle according to claim 1, it is characterized in that: be to upload data after the data acquisition by the usb communication module, the mode of storage has two kinds, promptly data storage is arrived flash disk or portable hard drive by the HOST USB interface, or give PC data upload, and realize the mass memory of data and based on the information stores of fault by the DEVICE USB interface.

4, according to the described vehicle information recorder of hybrid power vehicle of each claim of claim 1-3, it is characterized in that: CPU adopts the DSP2812 of TI company in the described CPU processing module.

5, vehicle information recorder of hybrid power vehicle according to claim 1, it is characterized in that: also comprise crystal oscillator module and reseting module, link to each other with the CPU processing module respectively, described crystal oscillator module utilizes external clock reference to provide clock signal for chip, described reseting module is used for allowing system reset rerun when program fleet or irregular operating.

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