CN201392303Y - On-line electronic hydrometer - Google Patents

On-line electronic hydrometer Download PDF

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Publication number
CN201392303Y
CN201392303Y CN200920067483U CN200920067483U CN201392303Y CN 201392303 Y CN201392303 Y CN 201392303Y CN 200920067483 U CN200920067483 U CN 200920067483U CN 200920067483 U CN200920067483 U CN 200920067483U CN 201392303 Y CN201392303 Y CN 201392303Y
Authority
CN
China
Prior art keywords
chip microcomputer
pulling force
force sensor
scm
converter
Prior art date
Application number
CN200920067483U
Other languages
Chinese (zh)
Inventor
于莲芝
杨文龙
王春阳
Original Assignee
上海理工大学
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 上海理工大学 filed Critical 上海理工大学
Priority to CN200920067483U priority Critical patent/CN201392303Y/en
Application granted granted Critical
Publication of CN201392303Y publication Critical patent/CN201392303Y/en

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Abstract

The utility model relates to an on-line electronic hydrometer comprising solution to be detected, a floater, a tension sensor, a measurement circuit, an A/D converter, a single-chip microcomputer system and a liquid crystal display screen. The floater is suspended below the tension sensor; and electric signals output by the tension sensor are detected and amplified via the measurement circuit and then are transmitted into the A/D converter to be converted, and finally are transmitted into the single-chip microcomputer system which displays the collected specific gravity on the liquid crystal display screen in a real-time way. The on-line electronic hydrometer has the advantages of realization of on-line automatic measurement of liquid specific gravity, simple structure, easy implementation and improvement of detection means.

Description

Online electric liquid picnometer
Technical field
The utility model relates to a kind of measuring instrument field, particularly a kind of online electric liquid picnometer.
Background technology
At present, measure liquid specific gravity and be generally first sampling, use this proportion of specific gravity balance test sample again.The method only can realize off-line measurement, and adopts manually-operated, and reading error varies with each individual, and precision is not high, not robotization of process.
Summary of the invention
The utility model is at existing not robotization of liquid specific density measurement, problem that precision is not high, has proposed a kind of online electric liquid picnometer, can make things convenient for, realize tintometric on-line measurement accurately, and is simple in structure, is easy to realize.
The technical solution of the utility model is: a kind of online electric liquid picnometer, comprise solution to be measured, float, pulling force sensor, metering circuit, A/D converter, Single Chip Microcomputer (SCM) system, LCDs, float hangs over the below of pulling force sensor, the electric signal of pulling force sensor output is sent into the A/D converter conversion after metering circuit detects processing and amplifying after, send into Single Chip Microcomputer (SCM) system again, Single Chip Microcomputer (SCM) system is presented at the rate of specific gravity that collects on the LCDs in real time.
The bridge circuit that described metering circuit is made up of 4 resistance and constitute by reverse ratio amplifying circuit two parts that amplifier and resistance are formed.
The beneficial effects of the utility model are: the online electric liquid picnometer of the utility model, realize the on-line automatic measurement of liquid specific gravity, and simple in structure, be easy to realize, promoted detection means.
Description of drawings
Fig. 1 is the structural representation of the online electric liquid picnometer of the utility model;
Fig. 2 is the theory structure block diagram of the online electric liquid picnometer of the utility model;
Fig. 3 is the metering circuit figure of the online electric liquid picnometer of the utility model.
Embodiment
The structure and the principle schematic of online as shown in Figure 1, 2 electronics solution concentration meter, online electronics solution concentration meter comprises solution 1 to be measured, float 2, pulling force sensor 3, metering circuit 4, A/D converter 5, Single Chip Microcomputer (SCM) system 6, LCDs 7, and float 2 hangs over the below of pulling force sensor 3; During use float 2 is immersed in the liquid 1, float 2 is subjected to liquid 1 buoyancy, the output of pulling force sensor 3 will produce a signal difference, this signal difference is directly proportional with buoyancy, because buoyancy equals the product of liquid 1 proportion, acceleration of gravity and float 2 volumes, therefore the signal difference of pulling force sensor 3 outputs also is directly proportional with liquid 1 proportion size, can record the proportion of liquid 1 according to this signal.The electric signal of pulling force sensor 3 outputs detects amplifying circuit through metering circuit 4 and handles, and sends into Single Chip Microcomputer (SCM) system 6 after A/D converter 5, and Single Chip Microcomputer (SCM) system 6 is presented at the rate of specific gravity that collects on the LCDs 7 in real time.
By metering circuit shown in Figure 34 by R 1, R 2, R 3, R 4The bridge circuit and amplifier A, the R that form 5, R 6, R 7Reverse ratio amplifying circuit two parts of forming constitute, wherein R 1Be working strain gauge, stick on the pulling force sensor R 2Be dummy gauge, R 3, R 4Be fixed resistance.When tension variations that pulling force sensor bears, R 1Value will change.When pulling force sensor is not subjected to pulling force, regulate R 1, R 2, R 3, R 4Size, make U 0Be output as zero.

Claims (2)

1, a kind of online electric liquid picnometer, it is characterized in that, comprise solution to be measured, float, pulling force sensor, metering circuit, A/D converter, Single Chip Microcomputer (SCM) system, LCDs, float hangs over the below of pulling force sensor, the electric signal of pulling force sensor output is sent into the A/D converter conversion after metering circuit detects processing and amplifying after, send into Single Chip Microcomputer (SCM) system again, Single Chip Microcomputer (SCM) system is presented at the rate of specific gravity that collects on the LCDs in real time.
2, according to the described online electric liquid picnometer of claim 1, it is characterized in that the bridge circuit that described metering circuit is made up of 4 resistance and constitute by reverse ratio amplifying circuit two parts that amplifier and resistance are formed.
CN200920067483U 2009-02-04 2009-02-04 On-line electronic hydrometer CN201392303Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920067483U CN201392303Y (en) 2009-02-04 2009-02-04 On-line electronic hydrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920067483U CN201392303Y (en) 2009-02-04 2009-02-04 On-line electronic hydrometer

Publications (1)

Publication Number Publication Date
CN201392303Y true CN201392303Y (en) 2010-01-27

Family

ID=41599124

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920067483U CN201392303Y (en) 2009-02-04 2009-02-04 On-line electronic hydrometer

Country Status (1)

Country Link
CN (1) CN201392303Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011123912A1 (en) * 2010-04-09 2011-10-13 Dos Santos Silva Andre Water consumption regulator
CN103091202A (en) * 2011-11-07 2013-05-08 张遥远 Liquid density measurement device
CN104655524A (en) * 2015-02-28 2015-05-27 徐文政 Electronic liquid densimeter
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
CN106226194A (en) * 2016-07-07 2016-12-14 东北农业大学 Potato starch content automatic assay method
CN106568678A (en) * 2016-10-14 2017-04-19 李晨天 Micro movement hammer liquid density meter based on end dynamic data analysis technology

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011123912A1 (en) * 2010-04-09 2011-10-13 Dos Santos Silva Andre Water consumption regulator
CN103091202A (en) * 2011-11-07 2013-05-08 张遥远 Liquid density measurement device
CN103091202B (en) * 2011-11-07 2015-06-03 张遥远 Liquid density measurement device
CN104655524A (en) * 2015-02-28 2015-05-27 徐文政 Electronic liquid densimeter
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
CN106226194A (en) * 2016-07-07 2016-12-14 东北农业大学 Potato starch content automatic assay method
CN106568678A (en) * 2016-10-14 2017-04-19 李晨天 Micro movement hammer liquid density meter based on end dynamic data analysis technology
CN106568678B (en) * 2016-10-14 2020-12-29 李晨天 Micro-motion hammer liquid densimeter based on tail end dynamic data analysis technology

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100127

Termination date: 20110204

C17 Cessation of patent right