CN2511964Y

CN2511964Y - Calibrator for pressure sensor connected with computer

Info

Publication number: CN2511964Y
Application number: CN 01251353
Authority: CN
Inventors: 刘天平; 赵伟; 高纪光
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-09
Filing date: 2001-11-09
Publication date: 2002-09-18
Anticipated expiration: 2011-11-09

Abstract

The utility model relates to a calibration device for a pressure sensor, which is connected with a computer. A power supply of the utility model, which is installed on one side of a box body of a host machine, is connected with an air pump through a conducting wire; the air pump is connected with an air inlet electromagnetic valve and an air exhaust electromagnetic valve through an air storage tank and an oil-water separator; a standard meter, a pressure meter and the pressure sensor connected with a pressure transmitter are installed between the air inlet electromagnetic valve and the air exhaust electromagnetic valve, a voltage stabilization power supply device is connected with the pressure transmitter connected with an A/D digital to analogue conversion board which is connected in the computer. The calibration device has the advantages of high detection precision and work efficiency, time and labour saving, labor intensity reduction and no environmental pollution.

Description

The pressure transducer calibration equipment that connects microcomputer

The utility model relates to a kind of industrial tensimeter, technology of instrument and meter field, specifically a kind of pressure transducer calibration equipment that connects microcomputer.

At present on the railway the dual-purpose checker of normally used LYL type tensimeter oxygen gauge by handle, pitcher pump, oil inlet hose, delivery valve pressure cap, standard scale joint, isolator, water lines, formed by parts such as school tensimeters.The shortcoming of this checker is that it is to the braking wind table of passenger train and the tensimeter of different kinds of railways testing equipment, oxygen gauge, when Acetylene gauge carries out verification, must carry out profit isolates, but isolation performance is bad, cause profit to mix during work easily, oil enters in the table, there is potential safety hazard, applied voltage test 10 minutes by hand before each inspection table, labour intensity is big, wastes time and energy, must observe with eyes simultaneously, estimate reading, be easy to generate sight equation, when editing work, need use hand-written record, owing to adopt and to add the water capacity and easily cause working environment is polluted, and because of oily different, need regularly more renew oil and cleaning fuel tap, operational sequence is numerous and diverse, labour intensity is big, and this just can not adapt to the needs of present passenger train speed-raising operation.

The purpose of this utility model provides a kind of pressure transducer calibration equipment that connects microcomputer, and it has the accuracy of detection height, work efficiency is fast, and various work realize robotization, time saving and energy saving, reduce labor intensity, improve working environment, can adapt to the needs of present passenger train speed-raising operation fully.

The pressure transducer calibration equipment of connection microcomputer described in the utility model as shown in drawings, it comprises main frame casing 13, power supply 1, air pump 12, air inlet solenoid valve 9, exhaust solenoid valve 5, standard scale 2, tensimeter 14, manual intake and exhaust operation valve 3, pressure transducer 6, pressure unit 7, A/D digital-to-analog conversion plate 15, stabilized voltage supply device 8 parts such as grade, it is characterized in that power supply 1 is contained in main frame casing 13 1 sides, power supply 1 connects air pump 12 by lead, air pump 12 is connected with gas tank 11, gas tank 11 is connected with oil-water separator 10, oil-water separator 10 is connected with air inlet solenoid valve 9, air inlet solenoid valve 9 is connected with manual intake and exhaust operation valve 3, manual intake and exhaust operation valve 3 and standard scale 2, tensimeter 14 is connected, tensimeter 14 is connected with wind path joint 4, wind path joint 4 is connected with exhaust solenoid valve 5, pressure transducer 6 is connected with pressure unit 7, pressure unit 7 with by rectifier, the stabilized voltage supply device 8 that transformer is formed is connected, stabilized voltage supply device 8 can become the 220V power supply 9V power supply and pass to A/D digital-to-analog conversion plate 15, it is the circuit arrangement that is equipped with for pressure unit 7, pressure unit 7 is connected with A/D digital-to-analog conversion plate 15, pressure transducer 6 becomes analog electrical signal to pressure signal and passes to pressure unit 7 and carry out after amplification filtering handles, pass to A/D digital-to-analog conversion plate 15, make it become the receptible data-signal of computing machine, the input computing machine.

The utility model its advantage compared with the prior art is:

1, the utility model utilizes from the computer software programs of establishment and controls microcomputer work owing to be connected with microcomputer, and the signal that receives is carried out computing, draws testing result at last.

2, in the checkout console of this device, pressure source produces a pressure signal and delivers to the tested manometric while, another part is passed to pressure transducer 6, pressure signal is converted to analog electrical signal to be passed to pressure unit 7 and carries out after amplification filtering handles, give A/D digital-to-analog conversion plate 15, convert the calculating function to and accept data-signal, the input computing machine carries out computing, go out testing result with printer prints at last, or it is stored in the computing machine.

3, improved detection speed and precision, reduced some artificial errors, its precision can reach 1/4096, observe with eyes thereby be through with, manual compression test and with the history of hand-written record calibrating data has realized the testing robotization, saves manpower greatly and raises the efficiency.

4, reduce labor intensity, free from environmental pollution, improve working conditions, help health of operators.

5, the utility model is of many uses, can be used for the various experimental facilitiess of verification, passenger train, the tensimeter that uses on boiler and the pipe network, vacuum meter and various electric contact, teletransmission tensimeter, oxygen, Acetylene gauge etc.

Description of drawings:

Fig. 1 is the structural representation of the pressure transducer calibration equipment of this connection microcomputer;

Fig. 2 is the fundamental diagram of this pressure transducer calibration equipment.

Below implementation process of the present utility model and operating principle are described further:

When this sensor calibration device is started working, at first energized 1, air pump 12 is started working and is beaten wind and boost, wind enters gas tank 11, carry out oil and water separation by oil-water separator 10, utilize the 9 control step-downs of air inlet solenoid valve, utilize manual intake and exhaust operation valve 3 to adjust control criterion table 2 simultaneously, stablizing of tensimeter 14 tested point values, starting exhaust solenoid valve 5 carries out step-down, adopt each point step-down value, pressure transducer 6 becomes analog electrical signal to pressure signal, passes to pressure unit 7 and carries out passing to A/D digital-to-analog conversion plate 15 after amplification filtering handles, make it become the receptible data-signal of computing machine, collect data by self-editing software program control at each point, carry out computing, the software of computing machine is worked out by the national verification rules, therefore computing machine can be judged verification result automatically, and utilizes printer automatically the verification result data to be printed and maybe will examine and determine data storage on dish.The stabilized voltage supply device of being made up of rectifier and transformer 8 is the circuit arrangements that are equipped with for pressure unit 7, and stabilized voltage supply device 8 can become the 9V power supply to the 220V power supply and pass to pressure unit 7, makes it carry out operate as normal.

Claims

1, a kind of pressure transducer calibration equipment that connects microcomputer comprises main frame casing (13), power supply (1), air pump (12), air inlet solenoid valve (9), exhaust solenoid valve (5), standard scale (2), tensimeter (14), manually intake and exhaust operation valve (3), pressure transducer (6), pressure unit (7), A/D digital-to-analog conversion plate (15), stabilized voltage supply device (8); It is characterized in that power supply (1) is contained in main frame casing (13) one sides, power supply (1) connects air pump (12) by lead, air pump (12) is connected with gas tank (11), gas tank (11) is connected with oil-water separator (10), oil-water separator (10) is connected with air inlet solenoid valve (9), air inlet solenoid valve (9) is connected with manual intake and exhaust operation valve (3), manual intake and exhaust operation valve (3) and standard scale (2), tensimeter (14) is connected, tensimeter (14) is connected with wind path joint (4), wind path joint (4) is connected with exhaust solenoid valve (5), pressure transducer (6) is connected with pressure unit (7), pressure unit (7) with by rectifier, the stabilized voltage supply device (8) that transformer is formed is connected, pressure unit (7) is connected with A/D digital-to-analog conversion plate (15), pressure transducer (6) becomes analog electrical signal to pressure signal to be passed to pressure unit (7) and carries out passing to A/D digital-to-analog conversion plate (15) after amplification filtering is handled, and it is become in the receptible data-signal input of the computing machine computing machine.

2, according to the described pressure transducer calibration equipment of claim 1, it is characterized in that the 220V power supply can being become the 9V power supply by the stabilized voltage supply device of being made up of rectifier and transformer (8), to pass to A/D digital-to-analog conversion plate (15) be the circuit arrangement that is equipped with for pressure unit (7).