CN103344523A - Liquid density real-time measurement method - Google Patents

Liquid density real-time measurement method Download PDF

Info

Publication number
CN103344523A
CN103344523A CN2013102711516A CN201310271151A CN103344523A CN 103344523 A CN103344523 A CN 103344523A CN 2013102711516 A CN2013102711516 A CN 2013102711516A CN 201310271151 A CN201310271151 A CN 201310271151A CN 103344523 A CN103344523 A CN 103344523A
Authority
CN
China
Prior art keywords
liquid
density
solid
force
time measurement
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
Application number
CN2013102711516A
Other languages
Chinese (zh)
Inventor
文景
陈光伟
王国友
文宽逸
文广为
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan University of Technology
Original Assignee
Hunan University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunan University of Technology filed Critical Hunan University of Technology
Priority to CN2013102711516A priority Critical patent/CN103344523A/en
Publication of CN103344523A publication Critical patent/CN103344523A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

一种液体密度实时测量方法,它能准确、快速的测量各种液体的密度,并能进行远距离实时测量与传输,其方法是,步骤1:准备一不溶于待测液体、其密度大于待测液体密度的固体;步骤2:细线的一端系住该固体,细线的另一端固定在力敏传感器上,并将该固体浸没于一已知密度为ρ 0的液体中,但不与盛液体的容器相接触;步骤3:将力敏传感器输出的电信号通过放大器放大,由二次仪表读数或直接通过A/D转换,由微机进行数据采集和显示,调节放大器放大倍数,使仪表直接显示为已知密度ρ 0值;步骤4:将固体浸没于待测液体中,但不与盛液体的容器相接触,则仪表直接显示待测液体的密度ρ x值。A liquid density real-time measurement method, which can accurately and quickly measure the density of various liquids, and can perform long-distance real-time measurement and transmission. A solid for measuring liquid density; Step 2: One end of the thin wire is tied to the solid, the other end of the thin wire is fixed on the force-sensitive sensor, and the solid is immersed in a liquid with a known density of ρ0 , but not with The container holding the liquid is in contact with each other; Step 3: Amplify the electrical signal output by the force-sensitive sensor through the amplifier, read it from the secondary instrument or directly convert it through A/D, collect and display the data by the computer, adjust the magnification of the amplifier, and make the instrument It is directly displayed as the known density ρ 0 value; Step 4: Submerge the solid in the liquid to be tested, but not in contact with the container holding the liquid, the meter will directly display the density ρ x value of the liquid to be tested.

Description

一种液体密度实时测量方法A method for real-time measurement of liquid density

所属技术领域 Technical field

本发明涉及一种液体密度实时测量方法,主要应用于大、中专院校实验教学。 The invention relates to a real-time measurement method for liquid density, which is mainly used in experimental teaching in universities and technical secondary schools.

背景技术 Background technique

密度是物质的一个物理参数,常见的液体密度测量方法有:常规法、密度瓶法、密度计法、浮力法、浮体法等,这些方法都存在测量精度不高、测量繁杂的缺点,尤其是不能进行远距离测量与传输。 Density is a physical parameter of matter. The common liquid density measurement methods include: conventional method, density bottle method, densitometer method, buoyancy method, floating body method, etc. These methods have the disadvantages of low measurement accuracy and complicated measurement, especially Long-distance measurement and transmission cannot be performed.

发明内容 Contents of the invention

为了克服上述现有技术的不足,本发明提供一种液体密度实时测量方法,它能准确、快速的测量各种液体的密度,并能进行远距离实时测量与传输。 In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a liquid density real-time measurement method, which can accurately and quickly measure the density of various liquids, and can perform long-distance real-time measurement and transmission.

本发明解决其技术问题所采用的技术方案是,步骤1:准备一体积为ν、不溶于待测液体、其密度大于待测液体密度、质量为m的固体;步骤2:细线的一端系住体积为ν、质量为m的固体,细线的另一端固定在力敏传感器上,并将该固体浸没于一已知密度为ρ 0的液体中,但不与盛液体的容器相接触,根据阿基米德原理,浸没于已知密度为ρ 0液体中的固体,其所受浮力等于其所排开的相同体积的液体的重量,即:                                                

Figure 411602DEST_PATH_IMAGE001
Figure 764961DEST_PATH_IMAGE002
,其中v为固体的体积,显然,悬挂物体的细线的张力为:
Figure 544698DEST_PATH_IMAGE003
,因此,液体密度的变化将引起细线中张力的变化;步骤3:将力敏传感器输出的电信号通过放大器放大,由二次仪表读数或直接通过A/D转换,由微机进行数据采集和显示,因此,待测液体密度可通过仪表直接显示,调节放大器放大倍数,使仪表直接显示为已知密度ρ 0值;步骤4:将固体浸没于待测液体中,但不与盛液体的容器相接触,则仪表直接显示待测液体的密度ρ x值。 The technical scheme that the present invention adopts to solve its technical problem is, step 1: prepare a solid that volume is ν, insoluble in the liquid to be measured, its density is greater than the density of the liquid to be measured, and mass is m; Step 2: one end of thin line is To hold a solid with a volume of ν and a mass of m, the other end of the thin wire is fixed on the force-sensitive sensor, and the solid is immersed in a liquid with a known density of ρ0 , but not in contact with the container containing the liquid, According to Archimedes' principle, the buoyant force on a solid submerged in a liquid of known density ρ0 is equal to the weight of the same volume of liquid it displaces, namely:
Figure 411602DEST_PATH_IMAGE001
Figure 764961DEST_PATH_IMAGE002
, where v is the volume of the solid, obviously, the tension of the thin wire hanging the object is:
Figure 544698DEST_PATH_IMAGE003
, therefore, the change of liquid density will cause the change of tension in the thin wire; Step 3: the electrical signal output by the force sensitive sensor is amplified by the amplifier, read by the secondary instrument or directly through A/D conversion, and the data is collected and processed by the microcomputer Display, therefore, the density of the liquid to be measured can be directly displayed by the meter, adjust the magnification of the amplifier, so that the meter can directly display the known density ρ0 value; Step 4: Immerse the solid in the liquid to be measured, but not with the container containing the liquid If they are in contact with each other, the meter will directly display the density ρx value of the liquid to be measured.

本发明的有益效果是:细线的一端系住一不溶于待测液体、其密度大于待测液体密度的固体,细线的另一端固定在力敏传感器上,先将该固体浸没于一已知密度为ρ 0的液体中,将力敏传感器输出的电信号通过放大器放大,调节放大器放大倍数,使仪表直接显示为已知密度ρ 0值,再将该固体浸没于待测液体中,但不与盛液体的容器相接触,则仪表直接显示待测液体的密度ρ x值,此发明方法简单、方便、快速、测量精度高,并能进行远距离实时测量与传输。 The beneficial effects of the present invention are: one end of the thin wire is tied to a solid which is insoluble in the liquid to be tested and its density is greater than the density of the liquid to be tested, the other end of the thin wire is fixed on the force sensitive sensor, and the solid is immersed in an already In the liquid with a known density of ρ0 , the electrical signal output by the force sensor is amplified by the amplifier, and the magnification of the amplifier is adjusted so that the meter directly displays the value of the known density ρ0 , and then the solid is immersed in the liquid to be tested, but Without contact with the container containing the liquid, the instrument directly displays the density ρx value of the liquid to be measured. The inventive method is simple, convenient, fast, has high measurement accuracy, and can perform long- distance real-time measurement and transmission.

具体实施方式 Detailed ways

下面结合具体实施例对本发明作进一步说明。 The present invention will be further described below in conjunction with specific examples.

本发明实施例1步骤:  Embodiment 1 step of the present invention:

a、准备一不溶于待测液体、其密度大于待测液体密度的固体; a. Prepare a solid that is insoluble in the liquid to be tested and whose density is greater than that of the liquid to be tested;

b、细线的一端系住上述固体,细线的另一端固定在力敏传感器上,并将该固体浸没于水中,但不与盛水的容器相接触,将力敏传感器输出的电信号通过放大器放大,调节放大器放大倍数,使仪表直接显示为水的密度ρ 0值;  b. One end of the thin wire is tied to the above-mentioned solid, and the other end of the thin wire is fixed on the force-sensitive sensor, and the solid is immersed in water, but not in contact with the water container, and the electrical signal output by the force-sensitive sensor passes through The amplifier is amplified, adjust the magnification of the amplifier, so that the meter directly displays the value of water density ρ0 ;

c、细线的一端系住上述固体,细线的另一端固定在力敏传感器上,并将该固体浸没于待测液体中,但不与盛液体的容器相接触,仪表直接显示的值即为待测液体的密度ρ x值。 c. One end of the thin wire is tied to the above-mentioned solid, the other end of the thin wire is fixed on the force-sensitive sensor, and the solid is immersed in the liquid to be tested, but not in contact with the container containing the liquid, the value directly displayed by the meter is is the density ρ x value of the liquid to be tested.

本发明实施例2步骤: Embodiment 2 steps of the present invention:

a、准备一不溶于待测液体、其密度大于待测液体密度的固体; a. Prepare a solid that is insoluble in the liquid to be tested and whose density is greater than that of the liquid to be tested;

b、细线的一端系住上述固体,细线的另一端固定在力敏传感器上,并将该固体浸没于水中,但不与盛水的容器相接触,将力敏传感器输出的电信号通过A/D转换,由微机进行数据采集和显示水的密度ρ 0值;  b. One end of the thin wire is tied to the above-mentioned solid, and the other end of the thin wire is fixed on the force-sensitive sensor, and the solid is immersed in water, but not in contact with the water container, and the electrical signal output by the force-sensitive sensor passes through A/D conversion, data acquisition and display of water density ρ0 value by microcomputer;

c、细线的一端系住上述固体,细线的另一端固定在力敏传感器上,并将该固体浸没于待测液体中,但不与盛液体的容器相接触,将力敏传感器输出的电信号通过A/D转换,由微机进行数据采集和显示待测液体的密度ρ x值。 c. One end of the thin wire is tied to the above-mentioned solid, the other end of the thin wire is fixed on the force-sensitive sensor, and the solid is immersed in the liquid to be tested, but not in contact with the container containing the liquid, and the output of the force-sensitive sensor is The electrical signal is converted by A/D, and the data is collected and displayed by the computer to display the density ρx value of the liquid to be measured.

Claims (1)

1. fluid density method for real-time measurement is characterized in that adopting following technical scheme, step 1: prepare one and be insoluble to testing liquid, its density greater than the solid of testing liquid density; Step 2: an end of fine rule hitches this solid, and the other end of fine rule is fixed on the force-sensing sensor, and with this solid immersion in a known density is ρ 0Liquid in, but do not contact with the container of holding liquid; Step 3: the electric signal of force-sensing sensor output is amplified by amplifier, by the secondary instrument reading or directly by the A/D conversion, carry out data acquisition and demonstration by microcomputer, the resonance-amplifier enlargement factor makes instrument directly be shown as known density ρ 0Value; Step 4: solid immersion in testing liquid, but is not contacted with the container of holding liquid, and then instrument directly shows the density of testing liquid ρ xValue.
CN2013102711516A 2013-07-01 2013-07-01 Liquid density real-time measurement method Pending CN103344523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013102711516A CN103344523A (en) 2013-07-01 2013-07-01 Liquid density real-time measurement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013102711516A CN103344523A (en) 2013-07-01 2013-07-01 Liquid density real-time measurement method

Publications (1)

Publication Number Publication Date
CN103344523A true CN103344523A (en) 2013-10-09

Family

ID=49279337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013102711516A Pending CN103344523A (en) 2013-07-01 2013-07-01 Liquid density real-time measurement method

Country Status (1)

Country Link
CN (1) CN103344523A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105067481A (en) * 2015-07-09 2015-11-18 浙江蓝箭称重技术有限公司 Digital mud specific gravity tester and testing method
CN105588784A (en) * 2014-10-23 2016-05-18 北京纳米能源与系统研究所 A continuous measurement device for liquid densities
CN105606459A (en) * 2016-02-04 2016-05-25 香港城市大学深圳研究院 In-situ torque testing device for micro-nano scale materials and observing device
CN107036934A (en) * 2017-04-27 2017-08-11 华电电力科学研究院 A kind of oil product air release value determines device and method
CN108627422A (en) * 2018-06-05 2018-10-09 江苏海基新能源股份有限公司 A kind of multi-functional density measurement device and application

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2080175U (en) * 1990-09-22 1991-07-03 冶金工业部钢铁研究总院 Subsidiary device of electronic scale density measuring
CN2216247Y (en) * 1992-09-10 1995-12-27 杜安棣 Liquid specific gravity real time measurer
JPH08271398A (en) * 1995-03-30 1996-10-18 Kosei Koki:Kk Specific gravity measuring method for liquid material using load cell
CN2325772Y (en) * 1997-04-25 1999-06-23 赵万山 Digital displaying type instrument for investigating density

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2080175U (en) * 1990-09-22 1991-07-03 冶金工业部钢铁研究总院 Subsidiary device of electronic scale density measuring
CN2216247Y (en) * 1992-09-10 1995-12-27 杜安棣 Liquid specific gravity real time measurer
JPH08271398A (en) * 1995-03-30 1996-10-18 Kosei Koki:Kk Specific gravity measuring method for liquid material using load cell
CN2325772Y (en) * 1997-04-25 1999-06-23 赵万山 Digital displaying type instrument for investigating density

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105588784A (en) * 2014-10-23 2016-05-18 北京纳米能源与系统研究所 A continuous measurement device for liquid densities
CN105067481A (en) * 2015-07-09 2015-11-18 浙江蓝箭称重技术有限公司 Digital mud specific gravity tester and testing method
CN105067481B (en) * 2015-07-09 2017-12-29 浙江蓝箭称重技术有限公司 Digital mud balance tester and method of testing
CN105606459A (en) * 2016-02-04 2016-05-25 香港城市大学深圳研究院 In-situ torque testing device for micro-nano scale materials and observing device
CN105606459B (en) * 2016-02-04 2018-07-13 香港城市大学深圳研究院 Torsion-testing apparatus in situ and observation device for micro/nano-scale material
CN107036934A (en) * 2017-04-27 2017-08-11 华电电力科学研究院 A kind of oil product air release value determines device and method
CN108627422A (en) * 2018-06-05 2018-10-09 江苏海基新能源股份有限公司 A kind of multi-functional density measurement device and application

Similar Documents

Publication Publication Date Title
CN203299081U (en) Real-time liquid density measuring instrument
CN103344523A (en) Liquid density real-time measurement method
CN103323368A (en) Measurement method for density of solid material
CN105067481B (en) Digital mud balance tester and method of testing
CN201392303Y (en) Online electronic liquid hydrometer
CN206114150U (en) Measure thermocouple time constant's device
CN203083902U (en) Magnetic force suspension density tester
CN107091861A (en) A kind of device and method for measuring different depth water body resistivity under water
CN106018761A (en) Nondestructive detection system and method for quality of building concrete
CN205228687U (en) Student uses weight beam
CN204462415U (en) A kind of device utilizing hydrostatic pressure to measure acceleration of gravity
CN103344522A (en) Liquid density measurement method
CN201373834Y (en) Online electronic solution concentration meter
CN102818749B (en) The online density of sea water salinometer of wireless data sending
CN204010443U (en) Archimedes principle teaching and experimental demonstration instrument
CN108507904A (en) A kind of solid density measuring platform based on spring scale
CN206649779U (en) A kind of physics teaching active force and reaction force demonstration instrument
CN211013162U (en) Liquid level detection device for biological oil tank
CN206772883U (en) A kind of device for measuring underwater different depth water body resistivity
CN104568656A (en) Liquid density measuring device and measuring method
CN203929561U (en) Portable Solid Density Meter
CN202836528U (en) Device for automatically detecting inner radius of capillary tube and depth of insertion into molten metal
CN201965112U (en) High-precision seawater salinity measuring device
CN206919981U (en) A kind of buoy level meter for being easy to observation
CN105319146A (en) Method for measuring density of solid and measuring device of method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20131009

WD01 Invention patent application deemed withdrawn after publication