CN201697750U - Device for conversion of pressure calibration data into data sheet - Google Patents
Device for conversion of pressure calibration data into data sheet Download PDFInfo
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- CN201697750U CN201697750U CN2010201897562U CN201020189756U CN201697750U CN 201697750 U CN201697750 U CN 201697750U CN 2010201897562 U CN2010201897562 U CN 2010201897562U CN 201020189756 U CN201020189756 U CN 201020189756U CN 201697750 U CN201697750 U CN 201697750U
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- calibration
- controlling instrument
- table stores
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Abstract
The utility model discloses a device for conversion of pressure calibration data into a data sheet. In the technical scheme, an increment setter is connected with an increment controller, an increment controller air channel is connected with the increment controller through a pressure measuring and controlling instrument, a pressure feedback device and a pressure stabilizing container, the increment setter is connected with a computer through a checking arithmetic unit and a data synchronization detection unit, the data synchronization detection unit is connected with the increment controller, the pressure measuring and controlling instrument, the checking arithmetic unit, the computer and a P-V-C data sheet memory, the pressure measuring and controlling instrument is connected with the P-V-C data sheet memory, the checking arithmetic unit and the computer, the computer is connected with a pressure calibration system, a temperature compensation system and a multi-channel pressure measuring device, and the P-V-C data sheet memory and the pressure calibration system are connected with the temperature compensation system; and the P-V-C data sheet memory is used for storing P-V-C data sheets under different temperature conditions. The utility model can provide the continuous and stable pressure, and convert the calibration data of the pressure measuring and controlling instrument into the P-V-C data sheet.
Description
Technical field
The present invention relates to pressure calibration and observation and control technology field, especially a kind of device that the pressure calibration data-switching is become tables of data.
Background technology
Pressure measuring device must regularly be calibrated the accuracy that could guarantee gaging pressure.The pressure calibration source is exactly the specialized equipment of base measuring pressure measuring equipment, and the precision in general pressure calibration source is higher than order of magnitude of pressure measuring device.Along with the development of pressure calibration and observation and control technology, the pressure testing and controlling instrument has substituted traditional pressure calibration source and has realized the output of automatic pressure control calibration data, DATA REASONING, data processing and pressure measuring device such as is calibrated at multiple function.The pressure testing and controlling instrument is controlled a calibration of output air pressure at every turn and is applied on the pressure measuring device, after the stable gas pressure to be calibrated, pressure measuring device carries out DATA REASONING, to the pressure measuring device adjustment, it is more accurate that press device is measured after the data computation of measuring with the calibration data of pressure testing and controlling instrument and pressure measuring device.The pressure calibration data of pressure testing and controlling instrument control output comprise three parameters and meet P
Calibration=C
Calibration factor* V
Calibration, wherein: P
CalibrationBe pressure testing and controlling instrument output pressure, V
CalibrationBe pressure testing and controlling instrument output voltage values, C
Calibration factorIt is the calibration factor of high-precision pressure sensor in the pressure testing and controlling instrument.Export P after the calibration stable gas pressure of pressure testing and controlling instrument
CalibrationSimultaneously to V should be arranged
CalibrationAnd C
Calibration factorOutput, be called P-V-C pressure calibration data output.Along with the needs that the development of pressure testing and controlling technology and precision improve, the pressure testing and controlling instrument can not adapt to the requirement of development.For example: 1, for improving the precision of multi-path pressure measuring equipment, need be that benchmark carries out pressure survey with the pressure calibration data of pressure testing and controlling instrument, need in pressure testing and controlling instrument gamut scope, to take out a plurality of pressure calibration data simultaneously, and the pressure testing and controlling instrument can only be exported pressure calibration data at every turn; 2, general pressure testing and controlling instrument is worked under constant temperature, the characteristics that need preheating, should not move, must have when working nitrogen cylinder, vacuum pump and many peripherals are arranged, if measure field is equipped with the not easy to assemble but situation that must carry out pressure calibration to pressure measuring device of pressure measuring device, can't be met according to the working environment and the mode of present pressure testing and controlling instrument.
Summary of the invention
Can not export the deficiency that a plurality of pressure calibration data and working environment are had relatively high expectations simultaneously in order to overcome prior art, the invention discloses a kind of device of converting pressure calibration data into data tables, can provide continuous stable air pressure the calibration data of pressure testing and controlling instrument can be converted to the P-V-C tables of data, use tables of data can improve measuring accuracy.
The technical scheme that technical solution problem of the present invention is adopted comprises: increase progressively device be set, increase progressively controller, pressure stability container, verification arithmetical unit, pressure testing and controlling instrument, pressure feedback device, data sync detecting unit, computing machine, P-V-C data table stores device, pressure calibration system, temperature-compensated system and multi-path pressure measuring equipment.Increase progressively device connection increasing progressively controller is set, increase progressively the controller gas circuit by the pressure testing and controlling instrument, the pressure feedback device, pressure stability container connection increasing progressively controller, the pressure testing and controlling instrument connects computing machine, increase progressively and device is set by the verification arithmetical unit, the data sync detecting unit connects computing machine, data sync detecting unit connection increasing progressively controller, the pressure testing and controlling instrument, the verification arithmetical unit, computing machine, P-V-C data table stores device, the pressure testing and controlling instrument connects P-V-C data table stores device, the verification arithmetical unit, computing machine connects the pressure calibration system, temperature-compensated system, the multi-path pressure measuring equipment, P-V-C data table stores device connects temperature-compensated system, the pressure calibration system connects temperature-compensated system, and the multi-path pressure measuring equipment connects the pressure calibration system.P-V-C tables of data in the P-V-C data table stores device under the storage condition of different temperatures also meets P
Calibration=C
Calibration factor* V
CalibrationThe P-V-C tables of data can be stored in portable hard drive, USB flash disk, CD and other carrier storage.
Described temperature-compensated system comprises temperature sensor and the temperature compensation controller that is linked in sequence.
Described multi-path pressure measuring equipment comprises a plurality of pressure transducers, multi pass acquisition card, P-V-C data table stores device.A plurality of pressure transducers connect P-V-C data table stores device by multi pass acquisition card, computing machine successively.
Described pressure calibration system comprises P-V-C data table stores device and pressure transducer.Pressure transducer connects P-V-C data table stores device by computing machine.
The invention has the beneficial effects as follows: the present invention can provide continuous stable air pressure, converts the calibration data of pressure testing and controlling instrument to the P-V-C tables of data.With the P-V-C tables of data pressure measuring device, pressure transducer being carried out the parameter displacement improves measuring accuracy.Can use calibration and observation and control technology fields such as multi-path pressure measuring equipment, base measuring pressure measuring equipment, application prospect is extensive.
The present invention utilizes the P-V-C pressure calibration data creating of pressure testing and controlling instrument output to become the P-V-C tables of data, is placed in the storer and can takes out the gamut calibration data simultaneously from storer.But can not be simply convert the calibration data of pressure testing and controlling instrument to calibration data table,, have the air pressure overshoot phenomenon can cause P because the pressure testing and controlling instrument can not provide the pressure of a continous-stable
Calibration, V
Calibration, C
CalibrationThe coefficient three is asynchronous when data enter computing machine, and calibrate air pressure to increase progressively the stable time different at every turn, can't be made into the P-V-C tables of data.Solution is: adopt to increase progressively setting and control, pressure stability container, pressure feedback device and form that stablize baric systerm be adjustable stable air pressure and prevent that the air pressure overshoot phenomenon from can provide the base measuring pressure that can increase progressively continuously to export again, and can satisfy the storage calibration data time greater than stablize air pressure maintenance stabilization time, reaching the pressure testing and controlling instrument is that unit carries out carrying out the purpose that continuous pressure increases progressively with the minimum resolution from the zero pressure to the full scale.Make P
Calibration, V
Calibration, C
Calibration factorThree's data sync makes the P-V-C tables of data by computing mechanism and is placed in the storer.
Description of drawings
Fig. 1 is a device synoptic diagram of the present invention; (wherein dotted line is a gas circuit)
Fig. 2 is a multi-path pressure measuring equipment synoptic diagram;
Fig. 3 is a base measuring pressure measuring equipment synoptic diagram.
Embodiment
Accompanying drawing 1 is the device synoptic diagram that a kind of pressure calibration data-switching becomes tables of data, wherein increases progressively device to be set to adopt model be the pneumatic count-up counter of PZA and connect and increase progressively controller, verification arithmetical unit.Increase progressively controller adopt model be FESTO the pneumatic control unit wherein gas circuit connect pressure stability container, pressure testing and controlling instrument, circuit connects to increase progressively device, data sync detecting unit is set.The pressure stability container adopt model be jc-3 pressure vessel wherein gas circuit connect the pressure feedback device, increase progressively controller.It is pressure control valve gas circuit connection pressure testing and controlling instrument, the pressure stability container of IMAV that the pressure feedback device adopts model.The verification arithmetical unit adopts model to be the intelligent digital arithmetical unit of L5190209 and to connect to increase progressively device, pressure testing and controlling instrument, data sync detecting unit, computing machine are set.The pressure testing and controlling instrument adopt model be CPC-6000 wherein gas circuit connect and increase progressively controller, pressure feedback device, circuit connects verification arithmetical unit, computing machine, P-V-C data table stores device.Form the data sync detecting unit and connect by known general synchronously sampled data detection channel chip, sample generator, self-checking circuit and increase progressively controller, verification arithmetical unit, computing machine, P-V-C data table stores device.Computing machine connects verification arithmetical unit, pressure testing and controlling instrument, pressure feedback device, data sync detecting unit, P-V-C data table stores device, pressure calibration system, temperature-compensated system and multi-path pressure measuring equipment.P-V-C data table stores device adopts model to be the portable hard drive of ST310005FDM and to connect computing machine, pressure testing and controlling instrument, temperature-compensated system, data sync detecting unit.The stable baric systerm of by increasing progressively device being set, increasing progressively controller, pressure stability container, pressure feedback device being formed, be used for adjusting control air pressure speed and keep to prevent that the air pressure overshoot phenomenon from can provide the pressure that can increase progressively continuously again stabilization time, because the storage calibration data time keeps guaranteeing to store calibration data stabilization time greater than stablizing air pressure, the pressure testing and controlling instrument is that unit carries out increasing progressively from zero pressure to the full scale continuous pressure calibration data P calibration is entered computing machine with the minimum resolution, and the RS232 of pressure testing and controlling instrument output simultaneously is with magnitude of voltage V
Calibration, calibrating sensors coefficient C
Calibration factorBe input to computing machine synchronously, in computing machine, with each pressure calibration data P in the gamut
Calibration, V
Calibration, C
Calibration factorInterlock system makes the P-V-C tables of data and is placed in the storer.Data sync detecting unit, verification arithmetical unit, increase progressively unit controls and finish three data interlock systems of P-V-C and make the P-V-C tables of data.The pressure calibration data conversion process is carried out under constant temperature, changes different constant temperature, repeats to make the P-V-C tables of data under the different constant temperature and puts into storer.(illustrate: each pressure calibration data has three parameter P
Calibration m, V
Calibration m, C
Calibration factor m, the minimum resolution * pressure testing and controlling instrument range of gamut pressure calibration data number=pressure testing and controlling instrument)
It is AD590 that temperature sensor in accompanying drawing 1 temperature-compensated system adopts model, and it is SG118 that temperature controller adopts model, and temperature sensor connects temperature compensation controller.Calibration data converts the process of P-V-C tables of data to carry out under constant temperature.During practical application, real-time measures ambient temperature and from P-V-C data table stores device, take out the data of the P-V-C tables of data under the corresponding constant temperature.
It is the pressure transducer of DH-2000 that multi-path pressure measuring equipment in the accompanying drawing 2 adopts model, and multi pass acquisition card employing model is that multi pass acquisition card, the P-V-C data table stores device employing model of BC4210 is the portable hard drive of ST310005FDM.When multichannel pressure was measured in practical application, the data parallel that a plurality of pressure transducers measure entered computing machine by the multi pass acquisition card.From storer, take out the gamut calibration data simultaneously, and use P
Calibration, C
Calibration factorThe base measuring pressure data pressure parameter of a plurality of pressure transducers is carried out the correspondence displacement, can improve measuring accuracy.For example: the pressure data that pressure transducer is measured is to use P
Measure M-V
Measure M-C
Measure MParametric representation also meets P
Measure M=V
Measure M* C
Survey Amount M, the calibration data P in the P-V-C tables of data
Calibration M-V
Calibration M-C
Calibration factor MParametric representation.Under same range situation, the parameter P in the pressure transducer storer
Measure MAnd C
Measure MUse P
Calibration MAnd C
Calibration factor MCarry out the correspondence displacement.The pressure transducer output characteristics becomes P
Calibration M-V
Measure M-C
Calibration MAnd meet P
Calibration=C
Calibration factor* V
MeasureWhen gaging pressure, V
Measure MBe measuring voltage value (variable), because C
Calibration factorBe the calibration factor of high-precision pressure sensor in the pressure testing and controlling instrument, so C
Calibration factorPrecision be higher than C
Measure MThe P that obtains
Calibration=C
Calibration factor* V
MeasureMeasured pressure value compares P
Measure M=V
Measure M* C
Measure MThe measuring accuracy height.(m is any natural number greater than 10)
It is the portable hard drive of ST310005FDM that the P-V-C data table stores device of the base measuring pressure measuring equipment in the accompanying drawing 3 adopts model, and it is the pressure transducer of DH-2000 that pressure measuring device adopts model.Calibrate with the pressure transducer that the P-V-C tables of data is installed measure field, and pressure parameter is replaced, can improve pressure measurement accuracy.Its method is: the pressure transducer range is divided equally m spot pressure, the parameter P of pressure transducer before being calibrated
Sensor M-V
Sensor M-C
Sensor MExpression, with ambient pressure to the pressure transducer P that exerts pressure
Sensor m, regulate the pressure P that ambient pressure makes sensor
Sensor M=P
Calibration M, utilize in the P-V-C tables of data and P
Calibration MCorresponding C
Calibration factor MThe C of displacement pressure transducer
Sensor MPressure transducer after the calibration is from original P
Sensor M-V
Sensor M-C
Sensor MBecome P
Calibration M-V
Sensor M-C
Calibration MSuccessively C is calibrated and replaced to pressure transducer range m point according to above step from small to large
The school Accurate coefficient M(m is any natural number greater than 10.)
The present invention compared with prior art has following significant advantage:
1) conversion of pressure testing and controlling instrument output pressure calibration data is obtained the P-V-C tables of data, take out gamut range calibration data from the P-V-C tables of data simultaneously, flexible working mode is convenient.
2) provide P-V-C tables of data under several constant temperatures, measure the calibration data that temperature value takes out the P-V-C tables of data under the real-time constant temperature in real time.
3) utilize the high characteristics of datum pressure precision, parameter is carried out the correspondence displacement, can improve the measuring accuracy of multi-path pressure measuring equipment simultaneously.
4) use the P-V-C tables of data output characteristics of pressure measuring device P-V-C is carried out pressure calibration, through of the parameter displacement of P-V-C tables of data to pressure measuring device, parameter displacement back pressure measuring device pressure measurement accuracy height.
The pressure calibration data-switching becomes the tables of data course of work: the pressure stability scope of 1, selecting to stablize baric systerm is more than or equal to 1.3 times pressure testing and controlling instrument range.2, increase progressively that the device setting is set is that basic pressure unit carries out pressure and increases progressively with the minimum resolution of pressure testing and controlling instrument.3, select the retention time, pressure stability container and steady pressure ultramagnifier are used for adjusting pressure control speed and keep be used for each P stabilization time
Calibration n, V
Calibration n, C
Calibration factor nThree signal Synchronization increase progressively, and select to increase progressively control stabilization retention time 〉==0.3 second.4, operation and deposit data: be that unit operating pressure measurement and control instrument carries out continuous pressure and increases progressively calibration data is sent into computing machine from the zero pressure to the full scale A), after keeping storing calibration data stabilization time, increase progressively the next one again with pressure testing and controlling instrument minimum resolution.Data sync detecting unit, verification arithmetical unit, increase progressively unit controls P
Calibration n, V
Calibration n, C
Calibration factorEach three signal Synchronization increase progressively.B) with P
Calibration n, V
The school Accurate n, C
Calibration factor nCalibration data be made into the P-V-C tables of data and put into storer.C) checking data, data sync detecting unit, verification arithmetical unit are used for verification P
Calibration n, V
Calibration n, C
Calibration factor nWhether corresponding in the storage gamut process.(n is any natural number greater than 10.)
Claims (4)
1. the device of a converting pressure calibration data into data tables, comprise increasing progressively device is set, increase progressively controller, the pressure stability container, the verification arithmetical unit, the pressure testing and controlling instrument, the pressure feedback device, the data sync detecting unit, computing machine, P-V-C data table stores device, the pressure calibration system, temperature-compensated system and multi-path pressure measuring equipment, it is characterized in that: increase progressively and device is set connects and to increase progressively controller, increase progressively the controller gas circuit by the pressure testing and controlling instrument, the pressure feedback device, pressure stability container connection increasing progressively controller, the pressure testing and controlling instrument connects computing machine, increase progressively and device is set by the verification arithmetical unit, the data sync detecting unit connects computing machine, data sync detecting unit connection increasing progressively controller, the pressure testing and controlling instrument, the verification arithmetical unit, computing machine, P-V-C data table stores device, the pressure testing and controlling instrument connects P-V-C data table stores device, the verification arithmetical unit, computing machine connects the pressure calibration system, temperature-compensated system, the multi-path pressure measuring equipment, P-V-C data table stores device connects temperature-compensated system, the pressure calibration system connects temperature-compensated system, and the multi-path pressure measuring equipment connects the pressure calibration system; P-V-C tables of data in the P-V-C data table stores device under the storage condition of different temperatures also meets P
Calibration=C
Calibration Coefficient* V
Calibration
2. the device of a kind of converting pressure calibration data into data tables according to claim 1, it is characterized in that: described temperature-compensated system comprises temperature sensor and the temperature compensation controller that is linked in sequence.
3. the device of a kind of converting pressure calibration data into data tables according to claim 1, it is characterized in that: described multi-path pressure measuring equipment comprises a plurality of pressure transducers, multi pass acquisition card, P-V-C data table stores device; A plurality of pressure transducers connect P-V-C data table stores device by multi pass acquisition card, computing machine successively.
4. the device of a kind of converting pressure calibration data into data tables according to claim 1 is characterized in that: described pressure calibration system comprises P-V-C data table stores device and pressure transducer; Pressure transducer connects P-V-C data table stores device by computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201897562U CN201697750U (en) | 2010-05-13 | 2010-05-13 | Device for conversion of pressure calibration data into data sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201897562U CN201697750U (en) | 2010-05-13 | 2010-05-13 | Device for conversion of pressure calibration data into data sheet |
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| Publication Number | Publication Date |
|---|---|
| CN201697750U true CN201697750U (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201897562U Expired - Lifetime CN201697750U (en) | 2010-05-13 | 2010-05-13 | Device for conversion of pressure calibration data into data sheet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832838B (en) * | 2010-05-13 | 2012-07-04 | 西北工业大学 | Device for converting pressure calibration data into data tables |
| CN102809463A (en) * | 2011-06-03 | 2012-12-05 | 上海保隆汽车科技股份有限公司 | Method and device for calibrating pressure sensors in batches |
-
2010
- 2010-05-13 CN CN2010201897562U patent/CN201697750U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832838B (en) * | 2010-05-13 | 2012-07-04 | 西北工业大学 | Device for converting pressure calibration data into data tables |
| CN102809463A (en) * | 2011-06-03 | 2012-12-05 | 上海保隆汽车科技股份有限公司 | Method and device for calibrating pressure sensors in batches |
| CN102809463B (en) * | 2011-06-03 | 2016-05-11 | 上海保隆汽车科技股份有限公司 | Baroceptor is scaling method and device in batches |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20120704 |