CN103149926A - Durability testing system for vehicle control device - Google Patents

Abstract

The invention provides a durability testing system for a vehicle control device, and aims to solve the problem of influence of various problems caused by the frequent use of a measurement and control device on the accuracy and the safety of a tested vehicle in use. The durability testing system comprises a signal input unit, a signal output unit, a detection unit, a central processing unit and corresponding control software, and is characterized in that the signal input unit is formed by connecting a digital input module, an analogue input module and a keyboard in parallel. The durability testing system has the positive effects that a powerful compatible computing function of a programmable logic controller (PLC) is used for comprehensively detecting the measurement and control device, various measurement and control devices can be simultaneously detected, special equipment is not required to be arranged according to different devices, and the aim can be fulfilled only by regulating parameters and ports.

Description

The automotive controls Durable test system

Technical field

The present invention relates to a kind of motor vehicle test macro field, is a kind of multifunctional steam truck control device Durable test system for automobile-used Electronic Control Assembly, parts, electrical and electronic component durability experiment specifically.

Background technology

At present, the development due to universal, the auto manufacturing of automobile continues to bring out out the vehicle that satisfies the various driving demands of people.For the automobile controller that uses in automobile making, require its accurate, easy operating, with strong points.And existing TT﹠C system is can only complete special purpose and can only carry out collection and the calculating of single data mostly, can't satisfy high rhythm, large batch of production requirement; Due to the frequent use of measure and control device, variety of issue in use appears unavoidably, and the precision of tested vehicle, degree of safety will be affected, so need a kind of normal operation that can detect the test macro assurance TT﹠C system of controlling measure and control device.

Summary of the invention

The purpose of this invention is to provide a kind of multifunctional steam truck control device Durable test system for automobile-used assembly, parts, electrical and electronic component durability experiment.

Technical essential of the present invention is: the automotive controls Durable test system comprises: signal input unit, signal output unit, detecting unit and central processing unit and control accordingly software, and it is characterized in that: described signal input unit is composed in parallel by digital quantity input module, analog input module and keyboard;

Described signal output unit is composed in parallel by digital signal output modules, analog signal output module and display;

Described detecting unit comprises displacement transducer and temperature sensor, and displacement transducer is in parallel with the analog input module; Temperature sensor is in parallel with digital quantity input module;

Signal input unit is connected the information receiving end of central processing unit with the information transmitting terminal of detecting unit, the information receiving end of signal output unit connects the information output of central processing unit;

Central processing unit is connected to two cover direct-current switch power supplies.

Described central processing unit is the system of master control unit of doing with PLC.

Two the cover direct-current switch power supplies voltages be respectively+24V ,+12V.Control supply voltage in view of automobile industry and control the different of voltage with conventional electrical appliance, gauge tap can select outlet line in case output control voltage+24V ,+select output place to adopt to satisfy different needs of work between 12V.

Described control software mainly comprises:

Controller long duration test program starts operation, the measuring ability of completion system, computing function and control function automatically after central processing unit powers on;

The combined switch control program is in test macro, temperature, pressure, numerical simulation amount to be got involved with carrying out the automatic control program that FEEDBACK CONTROL is completed closed cycle in operation circuit.The present invention can be used for the long duration test of four glass lifter motor controllers, also can carry out minibus, various relay contact endurancings in coachbuilt body controller, air-conditioner controller long duration test, automobile.

The invention has the beneficial effects as follows and utilize the powerful compatible computing function of PLC to carry out comprehensive detection to measure and control device, and can detect simultaneously the measure and control device of multiple types, need not reset specialized equipment according to the difference of device, only need adjustment parameter and port just can want in fact the purpose that reaches.

Description of drawings

Fig. 1 is structural representation sketch of the present invention.

Fig. 2 is the operation circuit circuit diagram that automatically comes and goes with the crawl intermitten operation of the present invention.

Fig. 3 is start control circuit sketch of the present invention.

Fig. 4 is forward control circuit sketch of the present invention.

Fig. 5 is reverse turn control circuit sketch of the present invention.

Invention is described in further detail by example below in conjunction with accompanying drawing, but following example is only the present invention's example wherein, do not represent the rights protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.

Embodiment

referring to Fig. 1, the digital quantity input module 1 of CJ series, analog input module 2 and parameter arrange the display keyboard 3 composition signal input unit that is connected in parallel, the signal issuing side of signal input unit is connected with the signal receiving end of the central processing unit PLC6 of Omron minicomputer CP1H series, temperature sensor 4 is in parallel with the digital quantity input module 1 of CJ series, displacement transducer 5 is in parallel with analog input module 2, and the central processing unit PLC6 that the information of temperature sensor 4 and displacement transducer 5 passes to Omron minicomputer CP1H series is processed, the signal output part of the central processing unit PLC6 of Omron minicomputer CP1H series with by digital signal output modules 7, the signal receiving end of the signal output unit that analog signal output module 8 and terminal display 9 compose in parallel connects, by carrying out logical operation and control, digital signal 7 and simulating signal 8 are shown by terminal display 9.

Be connected to voltage on the central processing unit PLC6 of Omron minicomputer CP1H series and be the DC power supply switch 10 of+24V and the voltage DC power supply switch 11 for+12V.Control supply voltage in view of automobile industry and control the different of voltage from conventional electrical appliance, can select outlet line so as output control voltage+24V ,+select output place to adopt to satisfy different needs of work between 12V, simultaneously with the function of sound and light alarm and emergent stopping.

Control software and comprise controller long duration test program and combined switch control program;

Controller long duration test program is utility routine, leaves input interface on screen, can increase menu item.Leave simultaneously the customer requirement technical parameters such as operating frequency and test period and set, can select the various modes such as crawl and interlock.And various parameters are shown, carry out simultaneously sound and light alarm, and under abnormal conditions emergent stopping.

Referring to Fig. 2 ~ Fig. 5, the combined switch control program, carry out the establishment of program by following three kinds of more representative circuits, simultaneously temperature, pressure, numerical simulation amount are got involved with carrying out the automatic control circuit that FEEDBACK CONTROL is completed closed cycle in operation circuit, so namely can complete actual control work, can expand at any time again, also have typical teaching significance, reach the purpose of simulation teching.

1) with the operation circuit that automatically comes and goes of crawl intermitten operation

This be a kind of existing crawl control again can the continuous reversible operation operation circuit.This circuit adopts the non-contact electric approach switch as the position switch of Stroke Control, thereby has improved accuracy and the reliability of operation circuit.Its operating principle is as follows:

1, the air switch QS that closes connects three-phase supply.

2, press forward and start button SB2 contactor KM1 coil electricity adhesive and self-locking, the closed motor power of connecting of KM1 main contact, the operation of motor forward.The driving mechanical component movement.

3, motor-driven mechanical part moves to precalculated position turn on-switch SQ2, the normally closed electric shock of SQ2 disconnects contactor KM1 wire loop, the KM1 outage, main contact discharges, electric motor circuit breaking, meanwhile the normal closing of contact of SQ2, make contactor KM2 coil electricity adhesive and self-locking, and its main contact changes the motor power phase sequence and reverses

4, in the motor reversal motion process, it is ready that link stopper makes SQ2 be reset to next KM1 action.When mechanical part moved to the precalculated position, link stopper impact stroke switch S Q1, the normally closed contact of SQ1 disconnected contactor KM2 wire loop, the KM2 coil blackout, and main contact discharges, and electric motor circuit breaking stops return motion.Meanwhile the normally opened contact closure of SQ1 makes KM1 coil electricity and self-locking, the closed motor power of connecting of KM1 main contact, and motor operation, and repeat above process

5, the interlocking link in circuit: contactor interlocking is by KM1(or KM2) the interlocking of auxiliary normally closed contact; Press interlock is by SB1(or SB2) complete.

6, the SB2(in parallel of auxiliary normally opened contact self-locking link: by KM1(or KM2) or SB3) normally opened contact realize self-locking.

7, the overload protection of motor is completed by electrothermal relay FR.

8, SB3, SB4 are the switch that manually boots motor

2) start control circuit

The main circuit direct current motor is the shunt excitation mode, and KM1 introduces direct supply, and KM2, KM3 are respectively used to bypass armature resistance R1 and R2.

The control circuit starting process is analyzed:

1, the air switch QS that closes connects three-phase supply

2, press SB2 contactor KM1 coil electricity adhesive and self-locking, motor string impedance starts

3, the KT1 coil electricity time-delay → time arrives, KM2 coil electricity, the KT2 coil electricity armature resistance R1 that delays time → excise; The KT2 delay time arrives, → KM3 armature resistance the R2 that switches on → excise, the operation of motor M armature total head

Improve thinking, can be at proceed-to-send, KM3 coil electricity, excision KT1 after the operation of armature total head, KT2, the coil current of the electrical equipment such as KM2.

2. the control circuit starting process is analyzed: (QS close state)

1, press SB2 contactor KM1 coil electricity adhesive and self-locking → KT1, the time-delay of KT2 coil blackout; The starting of M string impedance

2, the KT1 delay time arrives, KM2 coil electricity, excision armature R1

3, the KT2 delay time arrives → the KM3 coil electricity, excision R2, the operation of motor armature total head.

2) forward and backward control circuit (change of armature reverse power connection turns to)

1. forward and reverse starting process analysis: (under QS closes state)

1, press SB2 contactor KM1 coil electricity adhesive and self-locking, motor M resistance in series R1, the starting of R2 forward.KT1, the time-delay of KT2 coil blackout.

2, the KT1 delay time arrives → KM3 coil electricity → excision armature resistance R1.

3. the KT2 delay time arrives → KM4 coil electricity → excision armature resistance R2, the operation of motor M armature total head forward.

2. back-to-back starting process: (under QS closes state)

1, press SB3 contactor KM2 coil electricity adhesive and self-locking. motor M resistance in series R1, R2 back-to-back starting; KT1, the time-delay of KT2 coil blackout

2, the KT1 delay time arrives → KM3 coil electricity → excision armature resistance R1.

3, the KT2 delay time arrives → KM4 coil electricity → excision armature resistance R2, motor M armature total head inverted running.

The present invention can be used for the long duration test of four glass lifter motor controllers, also can carry out minibus, various relay contact endurancings in coachbuilt body controller, air-conditioner controller long duration test, automobile.Test specification of the present invention is as follows:

1) temperature test scope: 0～250 ℃

2) displacement measurement scope: 0-15mm

3) pressure transducer: 0-10MPa.

Claims (4)

1. measure and control device Durable test system, it comprises: signal input unit, signal output unit, detecting unit and central processing unit and control accordingly software, and it is characterized in that: described signal input unit is composed in parallel by digital quantity input module, analog input module and keyboard;

Described signal output unit is composed in parallel by digital signal output modules, analog signal output module and display;

Described detecting unit comprises displacement transducer and temperature sensor, and displacement transducer is in parallel with the analog input module; Temperature sensor is in parallel with digital quantity input module;

Signal input unit is connected the information receiving end of central processing unit with the information transmitting terminal of detecting unit, the information receiving end of signal output unit connects the information output of central processing unit;

Central processing unit is connected to direct-current switch power supply.

2. measure and control device Durable test system according to claim 1, it is characterized in that: described central processing unit is the system of master control unit of doing with PLC.

3. measure and control device Durable test system according to claim 1 is characterized in that: described direct-current switch power supply is comprised of for the direct-current switch power supply of+24V and the voltage DC power supply switch for+12V voltage.

4. measure and control device Durable test system according to claim 1, it is characterized in that: described control software comprises:

Controller long duration test program and combined switch control program;

Controller long duration test program starts operation, the measuring ability of completion system, computing function and control function automatically after central processing unit powers on;

The combined switch control program is in test macro, temperature, pressure, numerical simulation amount to be got involved with carrying out the automatic control program that FEEDBACK CONTROL is completed closed cycle in operation circuit.

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