CN108562324A - A kind of vertical tank bottom amount wireless measuring system and method - Google Patents

A kind of vertical tank bottom amount wireless measuring system and method Download PDF

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Publication number
CN108562324A
CN108562324A CN201810051029.0A CN201810051029A CN108562324A CN 108562324 A CN108562324 A CN 108562324A CN 201810051029 A CN201810051029 A CN 201810051029A CN 108562324 A CN108562324 A CN 108562324A
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CN
China
Prior art keywords
tank bottom
wireless
pressure
temperature
vertical tank
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Pending
Application number
CN201810051029.0A
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Chinese (zh)
Inventor
石佳楠
孙斌
赵玉晓
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China Jiliang University
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China Jiliang University
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Priority to CN201810051029.0A priority Critical patent/CN108562324A/en
Publication of CN108562324A publication Critical patent/CN108562324A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428—Safety, monitoring
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2612—Data acquisition interface

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The invention discloses a kind of vertical tank bottom amount wireless measuring systems, including wireless temperature pressure measuring module and host computer.Wireless temperature pressure measuring module includes the adsorbable compartments of IP68, PT100 temperature sensors, absolute pressure formula pressure sensor, A/D converter circuit, wireless module, lithium battery group, pressure, temperature value for obtaining measurement point.Wireless temperature pressure measuring module is distributed in each measurement point of vertical tank tank bottom and is automatically composed measurement network with host computer, realizes that measurement point liquid level measures simultaneously real-time temperature compensation, to realize the measurement of vertical tank bottom amount and tank bottom shape.The present invention also provides a kind of vertical tank bottom amount wireless measurement methods, and accurate, the vertical tank bottom amount of on-line measurement in real time and tank bottom change in shape can be realized for different level values.

Description

A kind of vertical tank bottom amount wireless measuring system and method
Technical field
The present invention relates to a kind of vertical tank bottom system for measuring quantity and method, especially a kind of vertical tank based on wireless network Bottom system for measuring quantity and method.
Background technology
Usually there are two types of methods for existing vertical tank bottom measurement：When capacity comparison method, second is that geometric measurement method.
Capacity comparison method is to be injected into water or liquid petroleum product in tested tank from standard can, until tank bottom highest is dashed forward Until playing the lucky submergence in part, at this moment the bottom amount of tank bottom is equal to inject the volume for the liquid for being accredited tank in standard can.Capacity Inherently there is error and inevitable in comparison method Plays tank.
Geometric measurement method is to carry out slack tank tank bottom geometric measurement, then form by formula derivation, and fill tank bottom amount after liquid Different degrees of sedimentation is had, causes further to be corrected, step is complicated.
Invention content
The purpose of the present invention：For error existing for the measurement of existing vertical tank bottom, step is complicated the problems such as, propose one The vertical tank bottom amount wireless measuring system of kind and method.
To achieve the goals above, the present invention provides a kind of vertical tank bottom amount wireless measuring system, the system comprises：
Wireless temperature pressure measuring module, pressure and temperature for measuring tank bottom measurement point；
Host computer analyzes vertical tank tank bottom shape and bottom amount for receiving each measurement point data and calculating.
Further, the wireless temperature pressure measuring module includes：
The adsorbable compartments of IP68 are adsorbed in vertical tank tank bottom for protecting internal circuit, and by module；
PT100 temperature sensors, for measuring vertical tank tank bottom measurement point temperature；
Absolute pressure formula pressure sensor measures point pressure for measuring vertical tank tank bottom；
Wireless module carries out data transmission for automatic network-building between each module and host computer；
A/D converter circuit, for sensor die analog quantity to be converted to digital quantity；
Lithium battery group is used for each electricity consumption module for power supply.
Further, the absolute pressure formula pressure sensor is fixed in the mounting hole in the adsorbable compartments of IP68, pressure Outwardly, signal output end is connect with A/D converter circuit mouth inwardly；
The PT100 temperature sensors are fixed in the adsorbable compartments of IP68 and are connect with A/D converter circuit；
The wireless module is fixed in the adsorbable compartments of IP68 and is connect with A/D converter circuit；
The A/D converter circuit is connected with each other and is fixed in the adsorbable compartments of IP68 with the lithium battery group；
The wireless temperature pressure measuring module is distributed in each measurement point of vertical tank tank bottom and is mutually automatically composed measurement network, real Existing measurement point liquid level measures and real-time temperature compensation.
In order to solve the disadvantage that script vertical tank tank bottom bottom amount can not wireless, on-line measurement, the present invention proposes a kind of vertical Tank bottom amount wireless measurement method, includes the following steps：
Step 1：Vertical tank tank bottom circle is divided into m concentric circles, according to institute's cyclotomy anchor ring accumulate it is identical determine radius, each N measurement point is evenly distributed in concentric circumferences again, entire bottom circle is divided into k=m*n finite element altogether；
Step 2：The wireless temperature pressure measuring module is adsorbed in each measurement point of tank bottom and central point and tank skin metering respectively On datum mark；
Step 3：The wireless temperature pressure measuring module acquisition each point pressure, temperature value are simultaneously sent to upper by wireless network Machine；
Step 4：The host computer receives each point pressure, temperature data, by formula（PiFor i-th of tank bottom Measurement point pressure, PbFor the pressure of gauge point）And it carries out real-time temperature compensation and obtains height between measurement point and datum mark Difference；
Step 5：The host computer obtains each measurement point height difference, generates vertical tank bottom shape by fitting algorithm, and pass through Formula（The bottoms S are tank bottom horizontal plane cross-section area, and hm-1 is m A donut average height, h0 are tank bottom center point height）The bottom amount and unevenness for finding out corresponding liquid level tank bottom are repaiied Positive value.
Description of the drawings
Fig. 1 is measuring system front view of the present invention.
Fig. 2 is tank bottom measurement point distribution vertical view of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings：
Refering to what is shown in Fig. 1, the measuring system of the present invention includes wireless temperature pressure measuring module 1 and host computer 2.
Wireless temperature pressure measuring module 1 includes the adsorbable compartments 11 of IP68, PT100 temperature sensors 12, absolute pressure formula Pressure sensor 13, wireless module 14, A/D converter circuit 15 and lithium battery group 16.
Module is adsorbed in vertical tank P tank bottoms by the adsorbable compartments 11 of IP68 for protecting internal circuit；PT100 temperature Sensor 12 is spent, for measuring vertical tank P tank bottom measurement point temperature；Absolute pressure formula pressure sensor 13, for measuring vertical tank P tanks Bottom measures point pressure；Wireless module 14 carries out data transmission for automatic network-building between each module and host computer；AD conversion electricity Road 15, for sensor die analog quantity to be converted to digital quantity；Lithium battery group 16 is used for each electricity consumption module for power supply.
Absolute pressure formula pressure sensor 13 is fixed in the mounting hole in the adsorbable compartments of IP68 11, pressure tappings outwardly, letter Number output end is connect with A/D converter circuit 15 inwardly；PT100 temperature sensors 12 are fixed in the adsorbable compartments of IP68 11 simultaneously It is connect with A/D converter circuit 15；Wireless module 14 is fixed in the adsorbable compartments of IP68 11 and is connect with A/D converter circuit 15；
A/D converter circuit 15 and lithium battery group 16 are connected with each other and are fixed in the adsorbable compartments of IP68 11；
Refering to what is shown in Fig. 2, vertical tank P tank bottoms circle is divided into m concentric circles, determined partly according to institute's cyclotomy anchor ring product is identical Diameter, i.e.,(0≤i≤m) (R is vertical tank P tank bottoms radius), is evenly distributed n measurement again in each concentric circumferences Point, entire bottom circle are divided into k=m*n finite element altogether, generally take m=n=8.
Specific systematic survey process is as follows：
Step 1：Wireless temperature pressure measuring module 1 is adsorbed in vertical tank P tank bottoms by measurement point distribution according to fig. 2, then in tank skin One wireless temperature pressure measuring module 1 of upper absorption is as the gauge point for measuring local atmospheric pressure；
Step 2：Injection water or liquid petroleum product in vertical tank, requirement for height there were not highest measurement point and were less than mete-wand Point；
Step 3：Wireless temperature pressure measuring module 1 acquires each point pressure, temperature value and is sent to host computer by wireless network 2；
Step 4：Host computer 2 receives each point pressure, temperature data, by formula（Pi is i-th of survey of tank bottom Amount point pressure, Pb is the pressure of gauge point）And it carries out the warm compensation of degree in real time and obtains difference in height between measurement point and datum mark；
Step 5：Host computer 2 obtains each measurement point height difference, generates vertical tank P bottom shapes by fitting algorithm, and by public Formula（The bottoms S are tank bottom horizontal plane cross-section area, hm-1 the（m- 1）A donut average height, h0 are tank bottom center point height）Find out the bottom amount and injustice of the tank bottom of corresponding liquid level Spend correction value.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include Within protection scope of the present invention.

Claims (4)

1. a kind of vertical tank bottom amount wireless measuring system, which is characterized in that the measuring system includes：
Wireless temperature pressure measuring module（1）, pressure and temperature for measuring tank bottom measurement point；
Host computer（2）, vertical tank is analyzed for receiving each measurement point data and calculating（P）Tank bottom shape and bottom amount.
2. vertical tank bottom amount wireless measuring system according to claim 1, which is characterized in that the wireless temperature pressure is surveyed Measuring module includes：
The adsorbable compartments of IP68 (11) are adsorbed in vertical tank for protecting internal circuit, and by module（P）Tank bottom；
PT100 temperature sensors（12）, for measuring vertical tank（P）Tank bottom measurement point temperature；
Absolute pressure formula pressure sensor (13), for measuring vertical tank（P）Tank bottom measures point pressure；
Wireless module (14) is used for each module and host computer（2）Between automatic network-building carry out data transmission；
A/D converter circuit（15）, for sensor die analog quantity to be converted to digital quantity；
Lithium battery group (16) is used for each electricity consumption module for power supply.
3. vertical tank bottom amount wireless measuring system according to claim 1, which is characterized in that
The absolute pressure formula pressure sensor（13）It is fixed on the adsorbable compartments of IP68（11）On mounting hole in, pressure tappings court Outside, signal output end inwardly with A/D converter circuit（15）Connection；
The PT100 temperature sensors（12）It is fixed on the adsorbable compartments of IP68（11）Upper and and A/D converter circuit（15）Even It connects；
The wireless module（14）It is fixed on the adsorbable compartments of IP68（11）Upper and and A/D converter circuit（15）Connection；
The A/D converter circuit（15）With the lithium battery group（16）It is connected with each other and is fixed on the adsorbable compartments of IP68（11） It is interior；
The wireless temperature pressure measuring module（1）It is distributed in vertical tank（P）Each measurement point of tank bottom is simultaneously mutually automatically composed measurement Network realizes that measurement point liquid level measures and passes through temperature real-time compensation.
4. a kind of vertical tank bottom amount wireless measurement method, which is characterized in that include the following steps：
The vertical tank（P）Tank bottom circle is divided into m concentric circles, and radius is determined according to institute cyclotomy anchor ring product is identical, it is each together N measurement point is evenly distributed on heart circumference again, entire bottom circle is divided into k=m*n finite element altogether；
The wireless temperature pressure measuring module (1) is adsorbed in each measurement point of tank bottom and central point and tube wall mete-wand respectively Point on；
Wireless temperature pressure measuring module (1) the acquisition each point pressure, temperature value are simultaneously sent to host computer by wireless network (2)；
The host computer (2) receives each point pressure, temperature data, by formula（PiFor tank bottom ith measurement Point pressure, PbFor the pressure of gauge point）And it carries out real-time temperature compensation and obtains difference in height between measurement point and datum mark；
The host computer (2) obtains each measurement point height difference, and vertical tank is generated by fitting algorithm（P）Bottom shape, and pass through Formula（SBottomFor tank bottom horizontal plane cross-section area, hm-1It is m-th Donut average height, h0For tank bottom center point height）Find out bottom amount and the unevenness amendment of corresponding liquid level tank bottom Value.
CN201810051029.0A 2018-01-19 2018-01-19 A kind of vertical tank bottom amount wireless measuring system and method Pending CN108562324A (en)

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Application Number Priority Date Filing Date Title
CN201810051029.0A CN108562324A (en) 2018-01-19 2018-01-19 A kind of vertical tank bottom amount wireless measuring system and method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110470362A (en) * 2019-08-21 2019-11-19 舟山市质量技术监督检测研究院 LNG tank bottom measuring device and its method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101100638A (en) * 2007-07-31 2008-01-09 宜昌纵横科技有限责任公司 White spirit mixing surplus temperature compensation device and method
CN102032847A (en) * 2009-09-28 2011-04-27 中国石油化工股份有限公司 Level measurement method for bottom edge part with liquid tank and volume detection method for tank bottom
CN103322916A (en) * 2013-06-28 2013-09-25 中国计量学院 Large-scale vertical tank volume measurement system and method based on three-dimensional laser scanning method
EP2642258A1 (en) * 2012-03-23 2013-09-25 Honeywell International Inc. Tank overflow protection system and method
CN104634410A (en) * 2015-02-14 2015-05-20 中国计量学院 Method for detecting capacity of oil tank with fiber bragg gratings online

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101100638A (en) * 2007-07-31 2008-01-09 宜昌纵横科技有限责任公司 White spirit mixing surplus temperature compensation device and method
CN102032847A (en) * 2009-09-28 2011-04-27 中国石油化工股份有限公司 Level measurement method for bottom edge part with liquid tank and volume detection method for tank bottom
EP2642258A1 (en) * 2012-03-23 2013-09-25 Honeywell International Inc. Tank overflow protection system and method
CN103322916A (en) * 2013-06-28 2013-09-25 中国计量学院 Large-scale vertical tank volume measurement system and method based on three-dimensional laser scanning method
CN104634410A (en) * 2015-02-14 2015-05-20 中国计量学院 Method for detecting capacity of oil tank with fiber bragg gratings online

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110470362A (en) * 2019-08-21 2019-11-19 舟山市质量技术监督检测研究院 LNG tank bottom measuring device and its method
CN110470362B (en) * 2019-08-21 2024-04-09 舟山市质量技术监督检测研究院 LNG tank bottom measuring device and method

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