CN101545820A

CN101545820A - Comprehensive test-bed

Info

Publication number: CN101545820A
Application number: CN200910302268A
Authority: CN
Inventors: 潘小寰; 林九悦; 孙红建
Original assignee: CSSC GUANGZHOU LONGXUE SHIPBULDING Co Ltd
Current assignee: Guangzhou Shipyard International Co Ltd
Priority date: 2009-05-13
Filing date: 2009-05-13
Publication date: 2009-09-30
Anticipated expiration: 2029-05-13
Also published as: CN101545820B

Abstract

A comprehensive test-bed comprises a computer which is connected with a pressure check meter and a temperature checking groove through the serial/parallel port of a multi-serial card and connected with a PLC controller through a data line. The PLC controller comprises a digital quantity input module, a current analog input module, a thermo-electric couple input module, a thermal resistor input module and a controller, checks a pressure transmitter, a level transducer, a thermo-electric couple sensor, a thermal resistor sensor, an switching value pressure sensor and an switching value temperature sensor and checks out the plural sensors in batch with high checking efficiency and good operation environment.

Description

A kind of multi-function test stand

Technical field:

The present invention relates to a kind of testing table that can carry out verification to the multiple sensors of using on the boats and ships.

Background technology:

Have a large amount of temperature, pressure and liquid level sensor on the boats and ships, these sensors play control or monitoring to ship equipment, and it is extremely crucial to the normal operation that guarantees each equipment on the boats and ships, the accuracy requirement strictness.In order to guarantee its precision, each sensor all needs to carry out verification before installation.At present, each big shipyard is in test, on the ship that applies for checking and examination when a large amount of all temps, pressure, liquid level sensor, all be to utilize equipment itself aboard ship, singlely one by one carry out verification, not only workman's operating environment is poor, and the data that sensor is measured are also by manually writing down one by one and calculating, its efficient is low, cycle is long, has a strong impact on shipbuilding period, is unfavorable for the development of general assembly modern shipbuilding technology.

From increasing work efficiency and improving workman's operating environment, testing table that can carry out verification to sensors such as temperature, pressure, liquid levels simultaneously of necessary development, verification with the various sensors of equipment such as main frame, generator on the ship, become the mass test from scattered site test, scattered operation on the ship is become workshop centralization test, thereby be not subjected to limitation of field condition on the ship, improve the verification efficient of sensor.

Summary of the invention:

The object of the present invention is to provide a kind of can concentrating that the multiple sensors on the ship is carried out the multi-function test stand that mass is concentrated verification, to improve verification efficient and to improve workman's operating environment.

A kind of multi-function test stand of the present invention, comprise computing machine, computing machine connects pressure testers and temperature verification groove respectively by each serial/parallel capable port of multi-serial-port card, computing machine also is connected with the PLC controller by data line, the PLC controller contains digital quantity input module, current analog amount load module, the thermopair load module, thermal resistance load module and controller, described pressure testers can provide test pressure and detect test pressure, and the voltage supply power transmitter arranged, the connectivity port of fluid level transmitter or access detected pressures, the current analog amount load module of described PLC controller has the connection terminal that can be electrically connected with pressure unit or fluid level transmitter; Described temperature verification groove can provide test temperature and detect test temperature, and the inspection of the detected temperatures of heat supply electric resistance sensor or thermocouple sensor insertion is arranged

Survey groove, described thermopair load module has the connection terminal that is electrically connected with thermocouple sensor, and described thermal resistance load module has the connection terminal that is electrically connected with thermal resistance sensor; Described pressure testers also has the connectivity port of inserting detected pressures for the switching value pressure transducer, and described digital quantity input module has the connection terminal that is electrically connected with the switching value pressure transducer; Described temperature verification groove also has for switching value temperature sensor insertion detected temperatures detection groove, and described digital quantity input module has the connection terminal that is electrically connected with switching value temperature sensor.

Multi-function test stand of the present invention by the connectivity port that the measuring junction of pressure unit is received the pressure testers detected pressures, is electrically connected pressure unit with current analog amount load module.Pressure testers is set output pressure as required, and the serial/parallel capable terminal by multi-serial-port card is communicated by letter output pressure value that it detects in real time to computing machine as standard value, simultaneously, pressure unit with the signal conveys that records to current analog amount load module, after current analog amount load module and controller processing, flow to computing machine, compare, thereby can finish detection pressure unit with the normal pressure value.

By the connectivity port that the measuring junction of fluid level transmitter is received the pressure testers detected pressures, fluid level transmitter is electrically connected with current analog amount load module.Range according to liquid level sensor, the output pressure of set pressure tester, normal pressure signal of pressure testers output, this signal is sent to computing machine simultaneously, computing machine will be automatically according to formula P=ρ gh (pressure=fluid density * acceleration of gravity * liquid level), conversion pressure is become the standard liquid level, as standard liquid level reference value, fluid level transmitter arrives the signal conveys that detects the current analog amount load module of PLC controller, via being transported to computing machine after current analog amount load module and the controller processing, computing machine compares with the titer place value after changing liquid level into, judge the precision of liquid level sensor, thereby can finish detection fluid level transmitter.

In the detection groove that thermocouple sensor is inserted temperature verification groove, thermopair is electrically connected with the thermopair load module of PLC controller.The verification temperature is set and be heated to temperature verification groove as required, and the serial/parallel capable terminal by multi-serial-port card during with the temperature groove that self detects real temperature value be sent to computing machine, as standard value.Thermocouple sensor is the signal conveys that the detects thermopair load module to the PLC controller, is transferred to computing machine after handling via thermopair load module and controller, compares with standard value, thereby can finish detection to thermocouple sensor.

In the detection groove that thermal resistance sensor is inserted temperature verification groove, thermal resistance temperature sensor is electrically connected with the thermal resistance load module of PLC controller.The verification temperature is set and be heated to temperature verification groove as required, and the serial/parallel capable terminal by multi-serial-port card is sent to computing machine with the time real temperature value of the temperature groove that self detects, as standard value, thermal resistance sensor arrives the signal conveys that detects the thermal resistance load module of PLC controller, via flowing to computing machine again after thermal resistance load module and the controller processing, compare with standard value, thereby finish the detection of the thermal resistance temperature being crossed sensor.

By temperature verification groove is inserted in the temperature zone of switching value temperature sensor, the output of tested switching value temperature sensor is received the digital quantity input module of PLC controller.Temperature verification groove is set the verification temperature as required, and the verification temperature is set and be heated to temperature verification groove as required, and the serial/parallel capable terminal by multi-serial-port card is sent to computing machine with the time real temperature value of the temperature groove that self detects, as standard value.When temperature reaches the switching value temperature sensor action, the digital quantity input module that the signal conveys of its detection is arrived the PLC controller of switching value temperature sensor, by delivering to computing machine after the digital quantity input module processing, in computing machine, compare, thereby can finish the detection of switching value temperature sensor with standard value.

With the connectivity port that the pressure sensitive district of switching value pressure transducer receives the pressure testers detected pressures, tested switching value pressure transducer is electrically connected with the digital quantity input module of PLC controller.The output pressure of set pressure tester as required makes the output pressure of pressure testers change by setting, and detects its force value in real time, the serial/parallel capable terminal by multi-serial-port card with the time the real force value that detects be sent to computing machine, as standard value.When pressure reaches the action of switching value pressure transducer, the digital quantity input module of PLC controller given the signal conveys that detects by the switching value pressure transducer, to deliver to computing machine after digital quantity input module and the controller processing, compare with standard value, conclude whether tested switching value pressure transducer is qualified, thereby can finish the detection of switch amount pressure transducer.

Described multi-function test stand, can carry out verification to pressure unit, fluid level transmitter, thermocouple sensor, thermal resistance sensor, switching value temperature sensor and switching value pressure transducer simultaneously, it can concentrate the verification of the above-mentioned multiple sensors of realization in batches, verification efficient height, workman's good operational environment.Use it for the sensor that class is many on the verification boats and ships, amount is big, can obviously reduce and answer checking time, shorten shipbuilding period.

Description of drawings:

Fig. 1 is a kind of structural representation of multi-function test stand;

Fig. 2 is a kind of principle of work synoptic diagram of multi-function test stand.

Embodiment:

A kind of multi-function test stand, as Fig. 1, Fig. 2, comprise computing machine 1, computing machine connects pressure testers 2 and temperature verification groove 3 respectively by each serial/parallel capable port of multi-serial-port card, computing machine also is connected with PLC controller 4 by data line, the PLC controller contains digital quantity input module 41, current analog amount load module 42, thermopair load module 43, thermal resistance load module 44 and controller 40, described pressure testers 2 has voltage supply power transmitter 5 or fluid level transmitter 6 to insert the connectivity port 21 of pressure sensor, the current analog amount load module 41 of described PLC controller 4 has the connection terminal that can be electrically connected with pressure unit 5 or fluid level transmitter 6, described temperature verification groove 3 has the detection groove 31 of the detected temperatures of heat supply electric resistance sensor 7 or thermocouple sensor 8 insertions, described thermopair load module 43 has the connection terminal that is electrically connected with thermocouple sensor 8, and described thermal resistance load module 44 has the connection terminal that is electrically connected with thermal resistance sensor 7; The splicing ear 21 of described pressure testers 2 also can insert detected pressures for switching value pressure transducer 9, and described digital quantity input module 41 has the connection terminal that is electrically connected with switching value pressure transducer 9; The detection groove 31 of described temperature verification groove 3 also can insert detected temperatures for switching value temperature sensor 10, and described digital quantity input module 41 has the connection terminal that is electrically connected with switching value temperature sensor 10.

In order to reduce interference from outside signals, the data line that connects PLC controller and computing machine can adopt twisted-pair feeder.

PLC controller and intercomputer can be connected with switch 9, switch has a plurality of ports, computing machine carries out data transmission simultaneously and between a plurality of port by the exchange function, and the function that it can expand multi-function test stand makes testing table can connect more verification unit simultaneously.

Claims

[claim 1] a kind of multi-function test stand, it is characterized in that: comprise computing machine, computing machine connects pressure testers and temperature verification groove respectively by each serial/parallel capable port of multi-serial-port card, computing machine also is connected with the PLC controller by data line, the PLC controller contains digital quantity input module, current analog amount load module, the thermopair load module, thermal resistance load module and controller, described pressure testers can provide test pressure and detect test pressure, and the voltage supply power transmitter arranged, the connectivity port of fluid level transmitter or access detected pressures, the current analog amount load module of described PLC controller has the connection terminal that can be electrically connected with pressure unit or fluid level transmitter; Described temperature verification groove can provide test temperature and detect test temperature, and the detection groove of the detected temperatures that heat supply electric resistance sensor or thermocouple sensor insert arranged, described thermopair load module has the connection terminal that is electrically connected with thermocouple sensor, and described thermal resistance load module has the connection terminal that is electrically connected with thermal resistance sensor; Described pressure testers also has the connectivity port of inserting detected pressures for the switching value pressure transducer, and described digital quantity input module has the connection terminal that is electrically connected with the switching value pressure transducer; Described temperature verification groove also has for switching value temperature sensor insertion detected temperatures detection groove, and described digital quantity input module has the connection terminal that is electrically connected with switching value temperature sensor.
[claim 2] multi-function test stand according to claim 1 is characterized in that: the data line that connects PLC controller and computing machine is a twisted-pair feeder.
[claim 3] multi-function test stand according to claim 1 is characterized in that: PLC controller and intercomputer are connected with switch.