CN201234250Y

CN201234250Y - Converter for wireless communication and automobile bus

Info

Publication number: CN201234250Y
Application number: CNU2008200828996U
Authority: CN
Inventors: 高忠康; 林强凯
Original assignee: ZHEJIANG CHINT AUTO PARTS INDUSTRICES CO Ltd
Current assignee: ZHEJIANG CHINT AUTO PARTS INDUSTRICES CO Ltd
Priority date: 2008-01-31
Filing date: 2008-01-31
Publication date: 2009-05-06
Anticipated expiration: 2018-01-31

Abstract

The utility model provides a converter for wireless communication and vehicle bus, which comprises a main control submodule, an RF wireless communication submodule, a bus interface control submodule, a key and display control submodule and a power management submodule, wherein the bus interface control submodule is connected on the bus. The utility model can realize communication between the internal information and the peripheral equipment of the vehicle and achieves the functions of monitoring, controlling, maintenance and upgrading of the peripheral equipment of the vehicle to the moving vehicles or vehicles stopped; meanwhile, the vehicle also can carry out information searching, vehicle system automatic renewing, and vehicle in formation automatic uploading on the peripheral equipment of the vehicle; the detecting, the controlling and the renewing can be automatically carried out on the vehicles, and the functions can be competed without allowing the vehicles to stop purposely; the utility model provides convenience for vehicle drivers and administrators, can be particularly used in the places where the vehicles are required to be detected, such as long-distance passenger car companies, taxi companies, vehicle maintenance companies, and the like, and can greatly improve the operating efficiency.

Description

The transducer of radio communication and automobile bus

Technical field

The present invention relates to the transducer of automobile and extraneous radio communication.

Background technology

An automobile has various basic functions and various miscellaneous function, every kind of function all more or less has electronic device to participate in, in the Gao Dang powerful vehicle, the shared ratio of electronic product is many more, often need communication between the various electronic, may adopt a certain function in existing vehicle is the independent communication mode of unit, also may adopt all electronic equipments to communicate by bus form.If adopting a certain function is the independent communication mode of unit, because vehicle interior has various function devices, therefore communicating by letter wire harness will be a lot, seem very complicated, also be not easy to detect, this technology often only is applied in the low-grade vehicle, because function does not need very powerfully in this kind vehicle, automaticity does not need very high.The bus forms that adopt communicate more in medium-to-high grade vehicle, adopt this communication mode, and each device just wants several order wires to link together just can reach mutual communication function.Along with increasing of automobile function, the raising of intelligent degree, more electronic equipment can be equipped automobile, and Hu Tongxin demand can be bigger mutually, and the employing of automotive interior bussing technique can get more and more.

No matter it is that the independent communication mode of unit still adopts the communication mode based on bussing technique that vehicle interior adopts a certain function, automobile all is independently to have a system of one's own, and lacks the mode that equipment communicates outside mobile automobile and the automobile.Especially when bus type automobile need be monitored, just seem that some is thorny,, order wire can also be connected on the automobile equipment, thereby carry out monitoring and maintenance, but institute's time spent may be many if vehicle is in halted state following time; If vehicle is in running status following time, just there is not good method to monitor.

Summary of the invention

Technical problem to be solved in the utility model is for providing the transducer of a kind of radio communication and automobile bus, vehicle interior information and external equipment or other vehicle can be carried out wireless connections, reaches functions such as information exchange, monitoring, control.For this reason, the utility model is by the following technical solutions: it comprises master control submodule, RF radio communication submodule, bus interface control submodule, button and demonstration control submodule and power management submodule, and bus interface is controlled submodule and is connected on the bus.Owing to adopt the technical solution of the utility model, the utlity model has the RF radio transmission-receiving function, the RF data that receive are handled, become bus signals to send the equipment of corresponding function in the car to effective legal data transaction, perhaps according to effective legal data demand, obtain the facility information of corresponding function in the car by bus, this facility information is fed back to outside vehicle equipment by the RF technology, thereby realization automotive interior information is communicated by letter with automobile external equipment, reaches outside vehicle equipment the vehicle that moves or stop to be monitored, control, the maintenance upgrade function.Simultaneously vehicle also can to the vehicle external equipment carry out information inquiry, automatically upgrade this truck system, upload this car information etc. automatically; Can detect, control, upgrade vehicle automatically, not finish above-mentioned functions and do not need specially to allow vehicle stop.Made things convenient for vehicle driver and manager,,, can greatly increase work efficiency such as coach bus company, taxi company, vehicle maintenance company etc. especially for use in the place that need detect vehicle.

Description of drawings

Fig. 1 is based on vehicle of the present utility model and car external equipment radio communication schematic diagram.

Fig. 2 is the structural representation that the utility model is connected in automobile bus.

Fig. 3 is a functional schematic of the present utility model.

Fig. 4 is the circuit diagram of RF radio transmission-receiving function specific implementation in the utility model.

Fig. 5 is the circuit diagram of automobile bus interface section in the utility model.

Embodiment

With reference to accompanying drawing 1: this figure is based on vehicle of the present utility model and car external equipment radio communication schematic diagram, vehicle of the present utility model wherein is housed can be various cars with automobile bus, commercial vehicle, vehicle in use etc.; Car external equipment wherein can be that other vehicle of the present utility model is housed, and also can be the equipment with coupling wave point, such as equipment such as measuring station, testboard, information updating points.

Carry out two-way communication based on vehicle of the present utility model by RF wireless technology and car external equipment, both can receive the wireless data that the car external equipment sends, can send wireless data to the car external equipment based on vehicle of the present utility model.After receiving the valid wireless data, judge whether it is legal data, when replying answer for making again after the legal data based on vehicle of the present utility model.Also can initiatively inquire about, send order, receive and reply based on vehicle of the present utility model to the car external equipment.

Whether normal radio communication of the present utility model can be applied in the automobile wireless detection range, detect on the vehicle equipment operation and current device operational factor by wireless mode and judge with this whether vehicle is working properly; Radio communication of the present utility model also can be applied in the vehicle monitoring field, register before various vehicles in use need being set out such as the long-distance bus operator, whether need to detect vehicle-state good, need to collect car operation distance or the like parameter, after adopting the utility model, these work just can be finished and carry out keeping records automatically and check in order to the later stage; Radio communication of the present utility model can also be applied in the system update field, such as the frequent cartographic information that upgrades of various GPS navigation system's needs, various music equipment need upgrade music sources, even some automobile need upgrade operating system, in this case, use vehicle of the present utility model as long as just can upgrade foregoing automatically during through corresponding renewal point, greatly facilitate car owner and staff.The utility model can be applied to vehicle need carry out on the field of Data Update with other vehicle or miscellaneous equipment, has reduced complicated wire harness and has connected, and has improved operating efficiency, and the driving convenience is provided.

With reference to accompanying drawing 2.This figure is based on automobile bus structural representation of the present utility model, and the automobile bus described in this figure is the CAN bus, and the CAN bus is used in medium-to-high grade vehicle in a large number, has traffic rate and communication capacity faster reliably.Connect radio communication and automobile bus transducer, vehicle body central controller, automotive air-conditioning system, door lock controller, lighting controller or the like among the figure on bus, these function devices all couple together by the CAN bus.

Radio communication becomes the CAN bus data to send to corresponding automobile function equipment with the effective legal data transaction that the automobile bus transducer will receive, corresponding automobile function equipment or carry out this order or more new data or echo reply data; Also legal data transaction becomes wireless data to send to free space to simultaneous converter with receiving effectively on the CAN bus, realizes being connected of wireless car external equipment and vehicle bus by this mode, plays vehicle detection, monitoring, update functions.

This figure is the structural representation of concrete CAN bus, certainly the automobile bus in the utility model can also be other bus, such as LIN bus, FlexRay bus, MOST bus or the like, its bus is connected with transducer and has similar property, just gives an example no longer one by one in the utility model.

With reference to accompanying drawing 3.This figure is radio communication and automobile bus converter inside structure chart, comprises master control submodule, RF radio communication submodule, bus interface control submodule, button and demonstration control submodule and power management submodule.The master control submodule plays main protocol conversion control action in the centre, will receive wireless signal and judge, effective legal data passes is controlled submodule to bus interface; The bus data that bus interface control submodule is received filters judgement simultaneously, and effective legal data are passed to RF radio communication submodule after treatment.RF radio communication submodule has wireless communication ability, can carry out radio communication with other equipment, convert wireless data to numerical data and pass to the master control submodule, will receive that simultaneously the digital data conversion of master control submodule becomes wireless data to send to free space.Bus interface control submodule is connected on the bus, has to become digital signal transfers to give the function of master control submodule the conversion of signals on the bus, also has the data transaction that the transmission of master control submodule is come and becomes the bus signals data function.Button is used to provide the approach to artificial Installation and Debugging operation indication with showing the control submodule.The power management submodule provides function of power protection simultaneously with the power supply that the power source conversion of automotive interior becomes the present invention to need, and causes this transducer job insecurity with the instability that prevents external power source.

RF radio communication submodule in Fig. 3 can be the radio communication with standard agreement, also can be special-purpose wireless communication protocol, such as the specialized protocol of 433M frequency, Zigbee wireless communication protocol, WiMAX wireless communication protocol, WiFi wireless communication protocol etc.At the different wireless communication agreement, the utlity model has different radio communication submodules.Bus interface control submodule in this cut-away view can be the bus communication with standard agreement, it also can be special-purpose bus communication protocol, such as CAN bus, LIN bus, FlexRay bus or the like, at different bus protocols, the utlity model has different bus interface control submodules.

With reference to accompanying drawing 4.This figure is the circuit diagram of RF radio transmission-receiving function specific implementation in the utility model, and wireless communication protocol adopts Zigbee communication protocol, has the Zigbee transmission-receiving function.In this circuit, adopt the MC13213 chip of freescale company to receive and dispatch control chip as Zigbee, this chip is the chip of the freescale company second generation based on the Zigbee platform, it meets the Zigbee standard-required, and has programmable functions and control the Zigbee agreement.The Zigbee communication frequency that circuit is realized among this figure has bi-directional communication function on 2.4GHz.

With reference to accompanying drawing 5.This figure is the circuit diagram of automobile bus interface section among the present invention, and automobile bus is the CAN bus.Adopt the ATA6660 chip of Atmel company in this circuit, can be applied in the middle of the vehicle of 12V/24V level, highest communication speed reaches 1M bits/s, meets the ISO11898 standard, has very high bus protection ability.

Claims

1, the transducer of radio communication and automobile bus, it is characterized in that it comprises master control submodule, RF radio communication submodule, bus interface control submodule, button and demonstration control submodule and power management submodule, bus interface control submodule is connected on the bus.

2, the transducer of radio communication as claimed in claim 1 and automobile bus is characterized in that described RF radio communication submodule is:

Based on the radio communication submodule of the specialized protocol of 433M frequency, based on Zigbee wireless communication protocol radio communication submodule, based on WiMAX wireless communication protocol radio communication submodule, based on WiFi wireless communication protocol radio communication submodule.

3, the transducer of radio communication as claimed in claim 1 and automobile bus is characterized in that described bus is: CAN bus, LIN bus, FlexRay bus, MOST bus.