CN201259635Y - Failure diagnosis device for wagon real-time tracking collecting system - Google Patents

Abstract

The utility model relates to a truck real-time tracking and sampling system fault diagnosis device, which comprises a power adapter, an LED display module, an LCD module, a reset circuit module, a sound output module, a communication interface module, a key matrix circuit and an AT89C51 single-chip computer; wherein, each module is connected into the corresponding port of the AT89C51 single-chip computer. The AT89C51 single-chip computer is programmed with C51 language and processes the received data through an interrupt mode. The utility model can timely and accurately judge the fault of the truck real-time tracking system to effectively shorten the fault handling time and reduce the impact of the truck real-time tracking system on the formation of the report data of the vehicle station caused by the fault and inaccuracy of the sampling system.

Description

Lorry real-time follow-up sampling system fault diagnosis device

Technical field

The utility model relates to lorry real-time follow-up sampling field, is a kind of lorry real-time follow-up sampling system fault diagnosis device specifically.

Technical background

The lorry real-time tracking system is made up of lorry data analysis system and signalling arrangement data acquisition system (DAS), the signalling arrangement data acquisition system (DAS) is made up of PC manipulator and acquisition system, acquisition system is formed by gathering cabinet (PLC equipment) and coherent signal relay (turnover station teleseme and related track circuit relay) again, because complex structure is when fault handling, check PC, Serial Port Line, PLC equipment, the interface relay, distribution and signal relay working condition between cabinet, analog quantity and digital quantity have during test, the inaccurate effect of existing determination methods is relatively poor, has incured loss through delay the processing time of fault.

Summary of the invention

The purpose of this utility model is to provide the accurate quick diagnosis lorry of a kind of energy real-time tracking system Fault Diagnosis device.

For reaching above purpose, the technical scheme that the utility model adopted is: it is by power supply adaptor, the LED display module, the LCD display module, the reset circuit module, sound output module, communication interface module, the key-press matrix circuit, the AT89C51 single-chip microcomputer is formed, it is characterized in that: power supply adaptor inserts the Vcc port of AT89C51 single-chip microcomputer, the LED display module connects the P1 port with the AT89C51 single-chip microcomputer, the LCD display module connects the PO port with the AT89C51 single-chip microcomputer, communication interface module connects the P3 port with the AT89C51 single-chip microcomputer, the reset circuit module inserts 9 ports of AT89C51 single-chip microcomputer, sound output module inserts AT89C51 single-chip microcomputer P3.4 port, send prompt tone when receiving rs 232 serial interface signal, the button matrix circuit inserts AT89C51 single-chip microcomputer P2 port, and the order of input simulation code detects the circuit of PC serial ports.

Be provided with eight LED in the LED display module and adopt anode connection altogether, therefore have only when the P1 of AT89C51 single-chip microcomputer output low level, could conducting LED.

Communication interface module adopts RS232 communication interface level shifting circuit, realizes the standard interface communication of single-chip microcomputer and PC and PLC.

The utility model lorry real-time follow-up sampling system fault diagnosis device is a core with the AT89C51 single-chip microcomputer of atmel corp mainly, and the AT89C51 chip price is cheap, and is multiple functional, and software development is easy, relies on the software support can realize more function.Communication interface module is to use special-purpose level transferring chip MAX232A as the be connected level conversion of diagnostor with checkout equipment, the serial ports change-over circuit that its external original paper seldom is a standard, and original paper is easily purchased.Reset circuit and power supply adaptor are the necessary conditions of circuit working, and the button matrix circuit is the instruction manipulation button that sends code, and LED and sound circuit are acousto-optic indication usefulness, and the LCD circuit promptly shows again as original state to be prepared for expansion from now on.

The program that AT89C51 single-chip microcomputer in the utility model is adopted is used the C51 language compilation, takes interrupt mode to handle and receives data, and export at the P1 port.

The flow process of its program is:

1. initialize routine

2. port data setting

3. execution interrupt routine

4. receive data and put into buffer zone

5. the data of buffer zone are exported at the P1 port

6. buffer data and normal data are compared

7. in LED, show test results

The beneficial effects of the utility model are: detect by the acquisition system to several stations, can receive data exactly, the situation at reflection locomotive turnover station, failure judgement promptly and accurately, effectively reduced fault handling time, reduced the lorry real-time tracking system because the fault of sampling system and inaccurate, the influence of bringing for the formation of station report data.It is timely and effective to have guaranteed that station system office automation and form generate automatically.The fault judgement processing time reduced in half an hour by original 2～3 hours.Guarantee that the lorry real-time tracking system normally uses, can provide accurately for office automation, transportation data collection generate chart, freight volume analysis, transportation cost analysis automatically, in time, effective foundation.

Description of drawings

Accompanying drawing has provided structural representation of the present utility model

Fig. 1 is the theory diagram of the utility model lorry real-time follow-up sampling system fault diagnosis device

Fig. 2 is the equipment synoptic diagram of the utility model lorry real-time follow-up sampling system fault diagnosis device

Wherein, 1-reset button, 2-RS232 and RS485 conversion line, 3-RS485 interface, 4-LED

Embodiment

Be described further below in conjunction with the enforcement of accompanying drawing: connect equipment by theory diagram earlier the utility model lorry real-time follow-up sampling system fault diagnosis device, energized, pilot lamp is bright, power devices is normal, press reset button, state LED all extinguishes, receive the pulse data of PLC transmission when equipment after, the led state pilot lamp clocklike glimmers, after Data Receiving was intact, if the bright steady light of LED was when connecing car 2,4 sites are bright or when dispatching a car 2,3 sites are bright, illustrating dispatches a car data or connect car data receives normally, otherwise corresponding Data Receiving existing problems.Because different stations receive the baud rate difference, the demonstration of LED is slightly different.Incorrect when the bright steady light demonstration of LED, illustrate that then PLC fault or the work of sampling relay are undesired, can further handle.After equipment receiving data is normal, again equipment is received RS232 and RS485 conversion line interface, duplicate detection data, data normally then fault otherwise RS232 and RS485 change line fault is arranged at PC.

When connecing car be with the just often corresponding LED show state of Data Receiving of dispatching a car:

Baud rate	Connect the car state	The state of dispatching a car
			300	1-7 sites are bright	1-6,8 sites are bright
9600	2,4 sites are bright	2,3 sites are bright

The parameter of the main components and parts of the utility model is: AT89C51 is the series of products of the 89C51 of atmel corp, in the ROM of 4K and the RAM of 128K are arranged, 48 is the I/O mouth, can use more than the serial 4K of the 89C51 of atmel corp, and power supply adaptor is the Switching Power Supply of the 5V1A of usefulness.LED light is the green LED of φ 5, and LCD is to be 128 * 64 LCDs of the band Chinese word library of control chip with ST7920.

Claims (3)

1. lorry real-time follow-up sampling system fault diagnosis device, it is by power supply adaptor, the LED display module, the LCD display module, the reset circuit module, sound output module, communication interface module, the key-press matrix circuit, the AT89C51 single-chip microcomputer is formed, it is characterized in that: power supply adaptor inserts the Vcc port of AT89C51 single-chip microcomputer, the LED display module connects the P1 port with the AT89C51 single-chip microcomputer, the LCD display module connects the P0 port with the AT89C51 single-chip microcomputer, communication interface module connects the P3 port with the AT89C51 single-chip microcomputer, the reset circuit module inserts 9 ports of AT89C51 single-chip microcomputer, sound output module inserts AT89C51 single-chip microcomputer P3.4 port, and the button matrix circuit inserts AT89C51 single-chip microcomputer P2 port.

2. a kind of lorry real-time follow-up sampling system fault diagnosis device as claimed in claim 1 is characterized in that: be provided with eight LED in the LED display module and adopt anode connection altogether.

3. a kind of lorry real-time follow-up sampling system fault diagnosis device as claimed in claim 1 is characterized in that: communication interface module adopts RS232 communication interface level shifting circuit.

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