CN112268653A - Pressure measuring device and method for time division multiple access - Google Patents
Pressure measuring device and method for time division multiple access Download PDFInfo
- Publication number
- CN112268653A CN112268653A CN202011238588.6A CN202011238588A CN112268653A CN 112268653 A CN112268653 A CN 112268653A CN 202011238588 A CN202011238588 A CN 202011238588A CN 112268653 A CN112268653 A CN 112268653A
- Authority
- CN
- China
- Prior art keywords
- pressure
- pressure measurement
- multiple access
- division multiple
- time division
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 50
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
本发明提供一种时分多址的压力测量装置及方法，包括压力测量传感器，还包括压力测量传感器出口侧设置的阀导，所述阀导设置至少一个阀导出口，所述阀导出口设置压力待测点，通过将一个压力测量传感器或变送器和阀导相连，阀导的不同出口与不同的压力测量点相连接，工作时通过阀导轮流切换不同的流路来实现压力测量传感器或变送器测量不同的压力测量点的压力值，在保证测量精度的前提下，既避免了压力测量传感器以及变送器个体之间的差异对测量结果带来的影响，也有效的避免使用高精度测量设备，降低了整个压力测量系统价格。The invention provides a time division multiple access pressure measurement device and method, including a pressure measurement sensor, and a valve guide provided on the outlet side of the pressure measurement sensor, the valve guide is provided with at least one valve outlet, and the valve outlet is provided with a pressure The point to be measured, by connecting a pressure measurement sensor or transmitter to the valve guide, the different outlets of the valve guide are connected to different pressure measurement points, and the valve guide alternately switches different flow paths during operation to realize the pressure measurement sensor or The transmitter measures the pressure values of different pressure measurement points. On the premise of ensuring the measurement accuracy, it not only avoids the influence of the difference between the pressure measurement sensor and the individual transmitter on the measurement results, but also effectively avoids the use of high pressure sensors. Precision measurement equipment, reducing the price of the entire pressure measurement system.
Description
Technical Field
The invention relates to the field of pressure measurement devices and methods, in particular to a time division multiple access pressure measurement device and method.
Background
In flow rate measuring devices, a large number of pressure measuring sensors or transducers are required to measure gas pressures at different positions, and it is now conventional to install one pressure measuring sensor or transducer at each measurement point, and obtain a desired measurement value by collecting the measurement results of these pressure measuring sensors or transducers.
If a plurality of points are measured by using the traditional method, a corresponding number of pressure measurement sensors or transmitters are needed, and due to the fact that individual differences exist between the sensors and the transmitters, pressure measurement is not consistent, accuracy is poor, measurement accuracy can be improved only by a method for improving the accuracy of the pressure measurement sensors or the transmitters, but the high-accuracy pressure measurement sensors or the transmitters are high in cost, and the cost of the whole pressure measurement system is high.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a time division multiple access pressure measurement device and a time division multiple access pressure measurement method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a time division multiple access pressure measurement device comprises a pressure measurement sensor and a valve guide arranged on the outlet side of the pressure measurement sensor, wherein the valve guide is provided with at least one valve guide outlet, and the valve guide outlet is provided with a pressure point to be measured.
Through linking to each other a pressure measurement sensor and valve guide, the different exports that the valve was led are connected with different pressure measurement points, and the pressure value that pressure measurement sensor measured different pressure measurement points is realized through valve guide different flow paths of switching in turn to the during operation, under the prerequisite of guaranteeing measurement accuracy, both avoided the influence that the difference between the pressure measurement sensor individuality brought to the measuring result, also effectual use high accuracy pressure measurement sensor of avoiding has reduced whole pressure measurement system price.
Further, the pressure measuring sensor can be replaced by a transducer, and the pressure is converted into a pneumatic signal or an electric signal for control and remote transmission monitoring.
Furthermore, the inlet side of the pressure measurement sensor and the outlet sides of the valves are provided with connecting flanges or quick-connecting plugs, so that the pressure measurement sensor is conveniently connected with air inlet equipment and output equipment.
A pressure measurement method of time division multiple access is characterized in that: the method comprises the following steps:
arranging a plurality of pressure points to be measured including n1, n2, … …, nj and nk;
setting a single pressure value acquisition point m;
setting a pressure value acquisition point m to be connected with any one measurement point nj of a plurality of pressure to-be-measured points including n1, n2, … …, nj and nk, and acquiring an nj pressure value through m; and switching the pressure points to be measured, disconnecting m from the pressure points to be measured nj, setting the connection between the measurement point m and any one measurement point nk of a plurality of pressure points to be measured comprising n1, n2, … …, nj, nk, and obtaining the nk pressure value through m.
Further, the step of switching the pressure point to be measured is as follows:
when the pressure value of nj obtained through m is over, closing an air outlet of the valve nj guide flow path;
opening an air outlet of the valve guide nk flow path;
and acquiring the pressure value of nk by m.
Furthermore, the time for measuring the pressure values of the pressure points to be measured including n1, n2, … …, nj, nk is t, and is set according to the specific pressure value measuring time, wherein t is more than 0.1s and less than 1000 s.
Compared with the prior art, the invention has the beneficial effects that: through linking to each other a pressure measurement sensor and changer and valve guide, the different exports that the valve was led are connected with different pressure measurement points, the pressure value that pressure measurement sensor or changer measured different pressure measurement points is realized through the valve guide different flow paths of switching in turn to the during operation, under the prerequisite of guaranteeing measurement accuracy, both avoided the influence that the difference between pressure measurement sensor and the changer individuality brought to the measuring result, also effectually avoid using high accuracy measurement equipment, whole pressure measurement system price has been reduced.
Drawings
FIG. 1 is a schematic view of example 1 of the present invention;
FIG. 2 is a schematic flow chart of example 2 of the present invention;
description of reference numerals: 1. the inlet side of the pressure measuring sensor, 2, the pressure measuring sensor, 3, the valve guide, 4, the point to be measured, and 5, the valve guide outlet.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Embodiment 1, as shown in fig. 1, a time division multiple access pressure measurement device includes a pressure measurement sensor 2, and further includes a valve guide 3 disposed on an outlet side of the pressure measurement sensor 2, where the valve guide 3 is provided with at least one valve guide outlet 5, and the valve guide outlet 5 is provided with a pressure point to be measured 4. .
Gas enters the equipment through the inlet side 1 of the pressure measuring sensor, passes through the pressure measuring sensor 2, is guided out through any specified outlet of the valve guide 3 by adjusting the flow direction of the valve guide 3, and pressure data of a pressure point 4 to be measured at the outlet is obtained through the pressure measuring sensor 2.
The pressure measuring sensor 2 can also be replaced by a transducer, and the pressure is converted into a pneumatic signal or an electric signal for control and remote transmission monitoring.
And connecting flanges or quick-connecting plugs are arranged at the inlet side 1 of the pressure measuring sensor and the positions of the valve leading-out ports 5, so that the pressure measuring sensor is conveniently connected with air inlet equipment and output equipment.
The valve guide 3 and the internal parts of the equipment are designed to be pressure-resistant and sealed, and the designed working pressure can be normal pressure or high pressure.
Embodiment 2, as shown in fig. 2, a pressure measurement method using time division multiple access is set based on a pressure measurement method apparatus using time division multiple access, and the method includes the following steps:
s1, setting a plurality of pressure points to be measured including n1, n2, … …, nj and nk;
s2, setting a single pressure value acquisition point m;
s3, setting a pressure value acquisition point m to be connected with any one measurement point nj of a plurality of pressure to-be-measured points 4 including n1, n2, … …, nj and nk, and acquiring a nj pressure value through m;
s4, switching the pressure to-be-measured points, disconnecting m from the pressure to-be-measured point nj, setting the measurement point m to be connected with any one measurement point nk of a plurality of pressure to-be-measured points including n1, n2, … …, nj and nk, and obtaining the nk pressure value through m.
The pressure point to be measured is switched by the following steps:
when the pressure value of nj obtained through m is over, the air outlet opening leading the valve to the nj flow path is closed;
opening an air outlet leading the valve to the nk flow path;
and acquiring the pressure value of nk by m.
The pressure value measuring time of the pressure values of the pressure points to be measured including n1, n2, … …, nj and nk is t, wherein t is more than 0.1s and less than 1000s, and the pressure values are set according to the specific pressure value measuring time.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011238588.6A CN112268653A (en) | 2020-11-09 | 2020-11-09 | Pressure measuring device and method for time division multiple access |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011238588.6A CN112268653A (en) | 2020-11-09 | 2020-11-09 | Pressure measuring device and method for time division multiple access |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112268653A true CN112268653A (en) | 2021-01-26 |
Family
ID=74339786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011238588.6A Withdrawn CN112268653A (en) | 2020-11-09 | 2020-11-09 | Pressure measuring device and method for time division multiple access |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112268653A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687730A (en) * | 2005-06-14 | 2005-10-26 | 浙江中控技术股份有限公司 | Circuit of testing capacitance and capacitance type pressure transmitter |
| CN101363383A (en) * | 2007-08-06 | 2009-02-11 | Gm全球科技运作股份有限公司 | Pressure monitoring system |
| CN202330404U (en) * | 2011-12-12 | 2012-07-11 | 南京中电环保工程有限公司 | Online slit density index measurement multi-path sample switching device |
| CN108593188A (en) * | 2018-04-02 | 2018-09-28 | 哈尔滨工业大学 | A kind of pressure capsule system |
| CN208458916U (en) * | 2018-06-28 | 2019-02-01 | 宁波奥克斯电气股份有限公司 | A kind of pressure test switching device and air conditioning pressure test equipment |
| CN110686759A (en) * | 2019-09-26 | 2020-01-14 | 西安航天计量测试研究所 | Sound velocity nozzle gas flow standard device capable of switching pressure sources and control method thereof |
| CN213180459U (en) * | 2020-11-09 | 2021-05-11 | 南京深度系统工程有限公司 | Pressure measuring device of time division multiple access |
-
2020
- 2020-11-09 CN CN202011238588.6A patent/CN112268653A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687730A (en) * | 2005-06-14 | 2005-10-26 | 浙江中控技术股份有限公司 | Circuit of testing capacitance and capacitance type pressure transmitter |
| CN101363383A (en) * | 2007-08-06 | 2009-02-11 | Gm全球科技运作股份有限公司 | Pressure monitoring system |
| CN202330404U (en) * | 2011-12-12 | 2012-07-11 | 南京中电环保工程有限公司 | Online slit density index measurement multi-path sample switching device |
| CN108593188A (en) * | 2018-04-02 | 2018-09-28 | 哈尔滨工业大学 | A kind of pressure capsule system |
| CN208458916U (en) * | 2018-06-28 | 2019-02-01 | 宁波奥克斯电气股份有限公司 | A kind of pressure test switching device and air conditioning pressure test equipment |
| CN110686759A (en) * | 2019-09-26 | 2020-01-14 | 西安航天计量测试研究所 | Sound velocity nozzle gas flow standard device capable of switching pressure sources and control method thereof |
| CN213180459U (en) * | 2020-11-09 | 2021-05-11 | 南京深度系统工程有限公司 | Pressure measuring device of time division multiple access |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2594951C2 (en) | Device for measuring flow rate, operating on principle of differentiated pressure, with reserve pressure sensors to detect failure of sensors and reduced efficiency | |
| CN202854298U (en) | Sulphur hexafluoride inflatable circuit breaker insulation state on-line monitoring device | |
| CN204142417U (en) | A kind of car force sensor endurance testing device | |
| CN104215290B (en) | Differential pressure type volume measurement method | |
| CN213180459U (en) | Pressure measuring device of time division multiple access | |
| CN106153162B (en) | Gas flow meter testing equipment | |
| CN104833456A (en) | Onsite detection device and method for pressure sensor of valve cooling system | |
| CN202748203U (en) | Automobile air inlet system component integrated testing apparatus | |
| CN112268653A (en) | Pressure measuring device and method for time division multiple access | |
| CN112880915A (en) | Method for calibrating pressure system of civil aircraft ground tester | |
| CN204043747U (en) | Differential pressure type device for measuring volume | |
| CN102749180B (en) | Stop valve leak rate online test method | |
| CN107449565A (en) | A kind of airtight leak-checking apparatus of multichannel | |
| CN205538192U (en) | Electrical control valve simulated failure experimental system | |
| CN209416643U (en) | A kind of air-valve dynamic performance testing control system based on PLC | |
| CN202676412U (en) | Shut-off valve leakage rate on-line detection device | |
| CN118424553A (en) | Pull pressure sensor test system based on big data | |
| CN108955839B (en) | Automatic flow calibrating device for electronic soap film | |
| CN219434329U (en) | Automatic testing device for initial and final pressure of direct-travel control valve | |
| CN201177072Y (en) | Integral double flange combined ball needle valve | |
| CN118758522A (en) | Method and device for setting and predicting parameters of large volume air tightness detection based on micro differential pressure | |
| CN208443542U (en) | Automatic leak detector is used in the test of valve island | |
| CN111121889B (en) | Split type combined parameter instrument | |
| CN205352644U (en) | Reversal temperature gas tightness tester | |
| CN115901121B (en) | Vacuum bin multipoint transmission fault detection system and method based on pickup matrix |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210126 |
|
| WW01 | Invention patent application withdrawn after publication |