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After the comprehensive performance testing, the final
data is outputted to the printer, to print the report list and
deposit in database for future query. It possesses at the
same time high efficiency allowing several cars tested[3].
F. standard setting function
Standards setting function the system can adapt to the
state standards or change of local standards by modifying
all testing items standard at any time.
G. faults auto diagnosis and analysis function
Computer networking detection system should be able
to discover our own faults, and analyze and suggest the
parts of the failure to help users for trouble-shooting.
Namely, when the system is running, faults diagnosis' of
mart CARDS, photoelectric switches, each sensor or
circuit, etc should be suggested so as to ensure the normal
running of the detection system[5].
V. HARDWARE COMPOSITIONS
Figure 1. System composition diagram
IV.
REALIZE THE FUNCTION
A. log on the subsystem
Logging system is the start of computer networking
detection system, mainly for vehicle's information
registration, to provide the necessary parameters for
testing.
B. on-line scheduling function
After logging in vehicles, the vehicles scheduling and
test of projects will be accomplished by the function of
on-line scheduling for the log-in the outer-inspection
automobile.
C. auto detection function
Auto detection function is the main part of the testing
system, and it completes actual testing of all operations.
After tested automobiles is logged in database through
zero station machine, wagon examiners only pass vehicle
testing lines' respective testing each operating station
according to the instructions of information from LED.
Then the drivers operate according to the tips on display,
and vehicle detection of operation process can be
completed through automatically detection system. At last,
test report is automatically printed after testing[4].
D. master controlling function
Master controlling function are accomplished by the
test line server 's master controlling IPC,usually by highperformance
IPC,and total control function is vehicle
detection's control and dispatch, data synthesis and
storage,and test report is usually printed in the master
controlling module.
E. data management and retrieval function
Data management and retrieval functions can possess
statistics, retrieval of the vehicles' information from the
master program's data files according to license plate
number, serial number, vehicle owner's unit and types of
projects.
A. Master computer
Master computer of the system, developed by China
486DX PC/industrial control machine,is the machine for
steel box, double fan structure in the positive pressure,
and is high-luminance shockproof, magnetic, high
reliability, very suitable for industrial field
application.Also,it adopts the machine double screen
mode, letting the master controlling personnel understand
fully at one glance of the screen display (The screen
display all kinds of lines on the detection data, and vice
screen online tests vehicles' lined up) . The master
computer includes printer, one communication controller
control eight and UPS power supply, etc[6].
B. zero station machine
Zero station machine is the AST-486PC machine,
composited by a machine, a screen and UPS power. It is
mainly responsible for appearance test results and input of
vehicle’s natural information, and the natural information
detection and transition of all data through RS232
standard communications mouth to PC.
C. slave computer and outer equipment
According to the test items the whole line is setted by
three slave computer, each slave computer composited by
8031 single chip microcomputer, the LED display,
photoelectric switches and red and green light, warning
light and project input device as external devices. They
are controlled and commanded by the slave computer.
Then the slave computer directly control the detection
equipment's operation according to the master computer
manipulation, then remove inspection data and conveys to
master computer in a finite format .
VI.
THE SOFTWARE COMPOSITION
The device software includes two parts, namely, master
computer software and , slave computer software is
compiled by C language, and slave computer software
uses assembly language.
A. master computer software
Master computer software includes the following
modules: standard equipment, equipment calibration
module, module testing data retrieval module, the
inspection of main procedure module and data
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