CN109974923A - A kind of pressure transmitter configurations - Google Patents
A kind of pressure transmitter configurations Download PDFInfo
- Publication number
- CN109974923A CN109974923A CN201910197368.4A CN201910197368A CN109974923A CN 109974923 A CN109974923 A CN 109974923A CN 201910197368 A CN201910197368 A CN 201910197368A CN 109974923 A CN109974923 A CN 109974923A
- Authority
- CN
- China
- Prior art keywords
- module
- circular shaft
- connect
- output end
- watchcase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004065 semiconductor Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000004323 axial length Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
Abstract
The invention discloses a kind of pressure transmitter configurations, including watchcase, measuring chamber, measuring chamber bottom is connected with pipe fitting, axial vertical multi-diameter shaft is equipped in measuring chamber, multi-diameter shaft is made of the circular shaft that multiple diameters successively reduce, the circular shaft lower end of bottom is equipped with resistance strain gage, the stepped locations of remaining each circular shaft are respectively equipped with resistance strain gage, signal acquisition module is equipped in watchcase, A/D module, processor module, resistance strain gage is connect with signal acquisition module input terminal respectively, signal acquisition module output end is connected by the signal input part of A/D module and processor module.The present invention can obtain pressure with the change rate of height change, and then can get accurate pressure value, improve accuracy of measurement.
Description
Technical field
The present invention relates to pressure transmitter field, specifically a kind of pressure transmitter configurations.
Background technique
Pressure transmitter is common pressure-measuring instrument, and under test gas or liquid are introduced into measuring chamber by pipe fitting
Resistance strain gage is arranged in body in measuring chamber, is transformed into the gas experienced, liquid physics pressure parameter by resistance strain gage
The electric signal of standard, to realize the measurement of pressure.Prior art pressure transmitter is mostly single strain gage testing, pipe fitting
Axial length cannot generally design it is too long, otherwise gas or liquid enter after pipe fitting highly rise can when can loss section partial pressure
Power causes measuring result error big.
The object of the present invention is to provide a kind of pressure transmitter configurations for summary of the invention, to solve prior art pressure inverting
The problem that pipe fitting length can not be too long in device.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of pressure transmitter configurations, including watchcase, watchcase bottom are connected with measuring chamber, and measuring chamber bottom is connected with pipe fitting,
It is characterized by: being equipped with axial vertical multi-diameter shaft in measuring chamber, multi-diameter shaft is sequentially coaxially connected and composed by multiple circular shafts, perpendicular
Histogram is successively reduced to the diameter of multiple circular shafts, and the circular shaft lower end of bottom is equipped with resistance strain gage, under remaining each circular shaft
End stepped locations are respectively equipped with the resistance strain gage with step shape in a ring, are equipped with signal acquisition module, AD in the watchcase
The resistance strain gage of module, processor module, each circular shaft lower end is connect with signal acquisition module input terminal respectively, signal acquisition
Module output end is connect with A/D module input terminal, the signal input part connection of A/D module output end and processor module.
A kind of pressure transmitter configurations, it is characterised in that: in multi-diameter shaft, the axial length of each circular shaft is equal,
The circular shaft lower end area of bottom is equal with the annular step surface area of remaining each circular shaft.
A kind of pressure transmitter configurations, it is characterised in that: the pipe fitting, which is connected to, is equipped with proportioning valve, in watchcase
Equipped with power supply, ratio valve-driving circuit, voltage comparator circuit, metal-oxide-semiconductor switching circuit, power supply passes through metal-oxide-semiconductor switching circuit, ratio
Valve-driving circuit is connect with proportioning valve, passes through metal-oxide-semiconductor switching circuit, proportioning valve drive circuitry to proportioning valve, place by power supply
Reason device module by signal output end is connect with one input terminal of voltage comparator circuit, and A/D module output end is also another with voltage comparator circuit
One input terminal connection, voltage comparator circuit output end are connect with metal-oxide-semiconductor switching circuit control terminal.
In the present invention, resistance strain gage is installed by multi-diameter shaft, can measure difference using the resistance strain gage of different height
Pressure value at height can obtain pressure with the variation of height change in processor module based on the pressure value of different height
Rate in conjunction with own dimensions and then can get accurate pressure value.Compared with prior art, measurement result of the invention will not be by
It is limited to own dimensions bring error, improves accuracy of measurement.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of pressure transmitter configurations, including watchcase 1,1 bottom of watchcase are connected with measuring chamber 2, measuring chamber 2
Bottom is connected with pipe fitting 3, and axial vertical multi-diameter shaft 4 is equipped in measuring chamber 2, and multi-diameter shaft 4 is sequentially coaxially connected by multiple circular shafts
Composition is connect, is successively reduced in the diameter of the multiple circular shafts of vertical direction, the circular shaft lower end of bottom is equipped with resistance strain gage 5, remaining
The lower end stepped locations of each circular shaft are respectively equipped with the resistance strain gage 6 with step shape in a ring, adopt in watchcase 1 equipped with signal
Collect module 7, A/D module 8, processor module 9, the resistance strain gage of each circular shaft lower end respectively with 7 input terminal of signal acquisition module
Connection, 7 output end of signal acquisition module are connect with 8 input terminal of A/D module, the signal of A/D module 8 output end and processor module 9
Input terminal connection.
In multi-diameter shaft, the axial length of each circular shaft is equal, circular shaft lower end area and remaining each circular shaft of bottom
Annular step surface area is equal.
The connection of pipe fitting 3 is equipped with proportioning valve 10, is equipped with power supply 11, ratio valve-driving circuit 12, voltage in watchcase 1 and compares
Circuit 13, metal-oxide-semiconductor switching circuit 14, power supply 11 are connected by metal-oxide-semiconductor switching circuit 14, ratio valve-driving circuit 12 and proportioning valve 10
It connects, proportioning valve 10,9 signal of processor module is supplied power to by metal-oxide-semiconductor switching circuit 14, ratio valve-driving circuit 12 by power supply 11
Output end is connect with 13 1 input terminals of voltage comparator circuit, and also another is defeated with voltage comparator circuit 13 for 8 output end of A/D module
Enter end connection, 13 output end of voltage comparator circuit is connect with 14 control terminal of metal-oxide-semiconductor switching circuit.Processor module compares to voltage
Circuit provides a reference voltage, and when there is instantaneous high pressure, voltage comparator circuit, which generates output signal, makes metal-oxide-semiconductor switching circuit
Conducting, and then so that proportioning valve is worked to be adjusted into the Fluid pressure of pipe fitting, prevent instantaneous high pressure from damaging internal sensor devices.
Claims (3)
1. a kind of pressure transmitter configurations, including watchcase, watchcase bottom is connected with measuring chamber, and measuring chamber bottom is connected with pipe and connects
Head, it is characterised in that: axial vertical multi-diameter shaft is equipped in measuring chamber, multi-diameter shaft is sequentially coaxially connected and composed by multiple circular shafts,
It is successively reduced in the diameter of the multiple circular shafts of vertical direction, the circular shaft lower end of bottom is equipped with resistance strain gage, remaining each circular shaft
Lower end stepped locations be respectively equipped with the resistance strain gage with step shape in a ring, signal acquisition mould is equipped in the watchcase
The resistance strain gage of block, A/D module, processor module, each circular shaft lower end is connect with signal acquisition module input terminal respectively, letter
Number acquisition module output end is connect with A/D module input terminal, the signal input part connection of A/D module output end and processor module.
2. a kind of pressure transmitter configurations according to claim 1, it is characterised in that: in multi-diameter shaft, the axis of each circular shaft
To equal length, the circular shaft lower end area of bottom is equal with the annular step surface area of remaining each circular shaft.
3. a kind of pressure transmitter configurations according to claim 1, it is characterised in that: the pipe fitting connection is equipped with ratio
Example valve, watchcase is interior to be equipped with power supply, ratio valve-driving circuit, voltage comparator circuit, metal-oxide-semiconductor switching circuit, and power supply is opened by metal-oxide-semiconductor
Powered-down road, ratio valve-driving circuit are connect with proportioning valve, pass through metal-oxide-semiconductor switching circuit, proportioning valve drive circuitry by power supply
To proportioning valve, processor module signal output end is connect with one input terminal of voltage comparator circuit, A/D module output end also with electricity
The connection of another input terminal of comparison circuit is pressed, voltage comparator circuit output end is connect with metal-oxide-semiconductor switching circuit control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910197368.4A CN109974923A (en) | 2019-03-15 | 2019-03-15 | A kind of pressure transmitter configurations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910197368.4A CN109974923A (en) | 2019-03-15 | 2019-03-15 | A kind of pressure transmitter configurations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109974923A true CN109974923A (en) | 2019-07-05 |
Family
ID=67079061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910197368.4A Pending CN109974923A (en) | 2019-03-15 | 2019-03-15 | A kind of pressure transmitter configurations |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109974923A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174729A (en) * | 1977-02-25 | 1979-11-20 | Otis Engineering Corporation | Pressure sensing safety device |
| JPH11132891A (en) * | 1997-10-31 | 1999-05-21 | Sogabe Toshio | Pressure sensor and its manufacture |
| JP2003222559A (en) * | 2002-01-30 | 2003-08-08 | Toyota Central Res & Dev Lab Inc | Force detecting element and pressure detecting sensor |
| CN201145584Y (en) * | 2008-01-24 | 2008-11-05 | 伊玛精密电子（苏州）有限公司 | Pressure transmitter |
| CN101762357A (en) * | 2009-12-29 | 2010-06-30 | 西安交通大学 | Strain supervoltage pressure transformer |
| CN103575435A (en) * | 2013-10-10 | 2014-02-12 | 南京神源生智能科技有限公司 | Three-dimensional force sensor used for automobile rear axle test system |
| CN204575230U (en) * | 2015-04-29 | 2015-08-19 | 辽宁工程技术大学 | Cylinder moment of torsion detection system |
| CN205404011U (en) * | 2016-02-16 | 2016-07-27 | 兰秀丽 | Force transducer and elastomer thereof |
| CN106017777A (en) * | 2016-06-28 | 2016-10-12 | 河北工业大学 | Artificial lateral line array type pressure gradient sensor |
| RU169361U1 (en) * | 2015-11-10 | 2017-03-15 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" | A device for pressing heterophase powder mixtures |
| CN206862755U (en) * | 2017-06-27 | 2018-01-09 | 中国科学院武汉岩土力学研究所 | A kind of embedding rock friction pile experimental rig of the confining pressure of measurement in real time |
| CN207080694U (en) * | 2017-03-01 | 2018-03-09 | 天津市塘沽第一阀门厂 | Pressure-reducing valve based on pressure sensor |
| CN209470800U (en) * | 2019-03-15 | 2019-10-08 | 上海电仪仪器仪表有限公司 | A kind of pressure transmitter configurations |
-
2019
- 2019-03-15 CN CN201910197368.4A patent/CN109974923A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174729A (en) * | 1977-02-25 | 1979-11-20 | Otis Engineering Corporation | Pressure sensing safety device |
| JPH11132891A (en) * | 1997-10-31 | 1999-05-21 | Sogabe Toshio | Pressure sensor and its manufacture |
| JP2003222559A (en) * | 2002-01-30 | 2003-08-08 | Toyota Central Res & Dev Lab Inc | Force detecting element and pressure detecting sensor |
| CN201145584Y (en) * | 2008-01-24 | 2008-11-05 | 伊玛精密电子（苏州）有限公司 | Pressure transmitter |
| CN101762357A (en) * | 2009-12-29 | 2010-06-30 | 西安交通大学 | Strain supervoltage pressure transformer |
| CN103575435A (en) * | 2013-10-10 | 2014-02-12 | 南京神源生智能科技有限公司 | Three-dimensional force sensor used for automobile rear axle test system |
| CN204575230U (en) * | 2015-04-29 | 2015-08-19 | 辽宁工程技术大学 | Cylinder moment of torsion detection system |
| RU169361U1 (en) * | 2015-11-10 | 2017-03-15 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" | A device for pressing heterophase powder mixtures |
| CN205404011U (en) * | 2016-02-16 | 2016-07-27 | 兰秀丽 | Force transducer and elastomer thereof |
| CN106017777A (en) * | 2016-06-28 | 2016-10-12 | 河北工业大学 | Artificial lateral line array type pressure gradient sensor |
| CN207080694U (en) * | 2017-03-01 | 2018-03-09 | 天津市塘沽第一阀门厂 | Pressure-reducing valve based on pressure sensor |
| CN206862755U (en) * | 2017-06-27 | 2018-01-09 | 中国科学院武汉岩土力学研究所 | A kind of embedding rock friction pile experimental rig of the confining pressure of measurement in real time |
| CN209470800U (en) * | 2019-03-15 | 2019-10-08 | 上海电仪仪器仪表有限公司 | A kind of pressure transmitter configurations |
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