CN201309498Y

CN201309498Y - GPS-CAN gateway for controlling locomotive

Info

Publication number: CN201309498Y
Application number: CNU2008202198163U
Authority: CN
Inventors: 王晓鹏; 李砾工; 于跃; 谭雷雨
Original assignee: CNR Dalian Electric Traction R& D Center Co Ltd
Current assignee: CRRC Dalian R&D Co Ltd
Priority date: 2008-11-25
Filing date: 2008-11-25
Publication date: 2009-09-16
Anticipated expiration: 2018-11-25

Abstract

The utility model discloses a GPS-CAN gateway for controlling locomotive, which comprises a CAN bus bar driver, a CAN protocol controller and a master control unit. The GPS-CAN gateway for controlling locomotive is characterized by further comprising a GPS receiving module for receiving information of speed, position and altitude of the locomotive, sending the received information of speed, position and altitude of the locomotive to the master control unit for data processing, and then sending the information of speed, position and altitude of the locomotive to the CAN bus bar through the CAN bus bar driver and the CAN protocol controller. The gateway sends the information of speed, position and altitude of the locomotive, which is obtained by the GPS module through the positioning technique to the CAN bus bar to satisfy the demands of industrial field control, has the characteristics of novel design, high reliability, high flexibility and low cost, and has wide application foreground in the industrial fields such as urban light rails, underground, automobiles and the like.

Description

The GPS-CAN gateway that is used for locomotive control

Technical field

The utility model relates to a kind of CAN gateway, and the information such as speed, position, height above sea level that relates in particular to a kind of train that the GPS location technology is obtained is sent to the GPS-CAN gateway on the CAN bus.

Background technology

GPS is that its groundwork of global positioning system (Global Positioning System) is to measure the satellite of known location to the distance between the receiver user, and the data of comprehensive multi-satellite are just known the particular location of receiver then.Reach this purpose, the position of satellite can be found in satellite ephemeris according to the time that spaceborne clock write down.When the user receives navigation message, extract satellite time and its clock do contrast with oneself just can be learnt satellite and user's distance, present position when utilizing satellite almanac data in the navigation message to extrapolate the satellite launching text again, the information such as position and speed of user in the WGS-84 geodetic coordinate system just can learn, so as to realize navigation, location, time service, function such as test the speed.The principal feature of global positioning system is that (1) is round-the-clock; (2) whole world covers; (3) three-dimensional constant speed timing high precision; (4) quick time-saving and efficiency rate: (5) are widely used multi-functional.

In recent years along with the fast development of railway systems, fieldbus is because its reliability height, cost is low, fault rate is low etc., and advantage makes it use more and more widely, network communication standard as the Chinese Railway guideway vehicle, the TCN bus is occupied very big proportion in field of track traffic, especially in field of track traffic such as locomotive, motor-car, subways, the application of TCN bus is especially extensive.In addition, the CAN bus is one of fieldbus of tool development prospect of generally acknowledging, and the ISO11898 standard is its international standard.The CAN bus standard is followed the ISO/OSI model, has adopted Physical layer wherein, data link layer and application layer.The CAN bus is the serial communication network of distributed control of a kind of effective support and real-time control system, has outstanding reliability, real-time and alerting ability.

At present, because the service request of domestic CAN interface train safety monitoring system, domestic and international advanced TCN network control system need pass through the CAN interface, and the train operation data are sent in the train safe monitoring system, is convenient to train traffic safety and maintenance.Though, existing bussing technique has above plurality of advantages, but the mode of the acquisition of field data and regulation and control also adopts traditional approach, make the mode striking contrast of advanced bussing technique, can not well bring into play TCN bus and the due effect of CAN bus with the acquisition and the on-the-spot regulation and control of the field data that falls behind.So it is very necessary that a kind of more advanced field data acquisition instrument is developed.

Summary of the invention

The utility model is at the proposition of above problem, and the information such as a kind of speed with the acquisition of GPS location technology, position, height above sea level of developing send to the GPS-CAN gateway on the CAN bus.The technical solution of the utility model is achieved in that

A kind of GPS-CAN gateway that is used for locomotive control comprises CAN bus driver, CAN protocol controller and main control unit; It is characterized in that also comprising the GPS receiver module, be used for receiver vehicle speed, position and altitude information; Described GPS receiver module is sent to locomotive speed, position and the altitude information that receives after main control unit advances data handing, through CAN bus driver and CAN protocol controller locomotive speed, position and altitude information is sent on the CAN bus again.

The main control unit core component adopts chip C8051F040, and the GPS receiver module adopts SkyNav GMl0, and the CAN bus driver adopts chip TJA1040, and the CAN protocol controller adopts chip SJA1000.

Owing to adopted technique scheme, the utility model will utilize information such as speed that location technology obtains, position, height above sea level to deliver on the CAN bus by the GPS module, information such as the position that records train that can be real-time, speed, height above sea level, actv. is followed the tracks of the running orbit of train, also can control train, can avoid the generation of accidents such as train from overtaking collision, collision by actv., and have high reliability, high information quantity, high flexibility and characteristics easy for installation, wieldy.Filled up the blank in domestic this field, make the TCN network control of China technical a new step, have realistic meaning for the technology innovation of domestic rail vehicles industry.

Description of drawings

The utility model has only a width of cloth accompanying drawing:

Fig. 1 is a structured flowchart of the present utility model.

Among the figure: 1, main control unit, 2, the GPS receiver module, 3, the CAN protocol controller, 4, the CAN bus driver.

The specific embodiment

The GPS-CAN gateway that is used for locomotive control that the utility model is invented as shown in Figure 1 comprises main control unit 1, GPS receiver module 2, CAN protocol controller 3 and CAN bus driver 4; Wherein main control unit 1 core component adopts chip C8051F040, GPS receiver module 2 to adopt SkyNav GM10, CAN bus driver 3 to adopt chip TJA1040, CAN protocol controller 4 to adopt chip SJA1000, in addition, also comprise MAX232 level conversion and the DB9 interface circuit of not looking among the figure; Main control unit C8051F040 is fully-integrated mixed signal SOC(system on a chip) type MCU, has 64 digital I/O pins, adopts the patent CIP-51 microcontroller kernel of Silicon Lab in the sheet.Each MCU can be in industrial temperature scope (45 ℃ to+85 ℃) work, and operating voltage is 2.7 ~ 3.6V.Because the application need of energy consumption recording instrument, require equipment to have the function of storage data, when the temporary transient power down of system, the FLASH memory device can also be used for non-volatile data storage except being used for program code stored.This has guaranteed the safe and reliable of application with regard to actv.; Not only finish GPS process data function, message data function and bus management function, also finish CAN link layer and application level function.SkyNav GM10 is a GPS receiver module: high sensitivity, low cost; Receive 12 satellite messages simultaneously; Support NMEA 0183 output protocol.The built-in ultra-low noise amplifier of GM10 is supported passive antenna.No matter the sensitivity of its superelevation in avenue, is that static immobilization or dynamic navigation can both provide excellent performance, and still can quick and precisely locate under weak satellite signals under narrow sky.The mode of operation of employing intermittent-sleep can reduce the power consumption of GM10 greatly, and this is very suitable for hand-held and battery-driven equipment.The CAN protocol controller is CAN server parts, selects the SJA1000 chip for use, supports the ISO11898 standard; The CAN bus driver is a core with the CAN actuator, selects the TJA1040 chip for use, has the CAN of enhancing bus driver function.Power supply unit comprises the power supply chip and the protective circuit of several grades, is responsible for the power supply of total system.The GPS receiver module is sent to locomotive speed, position and the altitude information that receives after main control unit advances data handing, through CAN bus driver and CAN protocol controller locomotive speed, position and altitude information is sent on the CAN bus again.

The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of GPS-CAN gateway that is used for locomotive control comprises CAN bus driver, CAN protocol controller and main control unit; It is characterized in that also comprising the GPS receiver module, be used for receiver vehicle speed, position and altitude information; Described GPS receiver module is sent to locomotive speed, position and the altitude information that receives after main control unit advances data handing, through CAN bus driver and CAN protocol controller locomotive speed, position and altitude information is sent on the CAN bus again.

2, the GPS-CAN gateway that is used for locomotive control according to claim 1, it is characterized in that the main control unit core component adopts chip C8051F040, the GPS receiver module adopts SkyNav GM10, the CAN bus driver adopts chip TJA1040, and the CAN protocol controller adopts chip SJA1000.