CN2348368Y - Magnetic liquid level measuring device - Google Patents
Magnetic liquid level measuring device Download PDFInfo
- Publication number
- CN2348368Y CN2348368Y CN 98244233 CN98244233U CN2348368Y CN 2348368 Y CN2348368 Y CN 2348368Y CN 98244233 CN98244233 CN 98244233 CN 98244233 U CN98244233 U CN 98244233U CN 2348368 Y CN2348368 Y CN 2348368Y
- Authority
- CN
- China
- Prior art keywords
- hall element
- measuring device
- element array
- magnetic
- display
- 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.)
- Expired - Fee Related
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a liquid level measuring device which is provided with a float and a float supporting magnet steel which are arranged in a closed container. The outer side of the closed container is provided with a hall element array on the position corresponding to the magnetic steel, and the input end of a signal processing circuit is inputted in the hall element array and is connected with a display and an analog signal output circuit. The utility model can solves the difficult that the ordinary liquid level measuring method can not send measuring result out the closed container.
Description
The utility model relates to a kind of measurement mechanism of liquid level.
Existing liquid level gauging method has mechanical type, condenser type, pressure type etc., and the something in common of these methods is that measurement mechanism must be directly or relatively directly contact with liquid level to be measured, and therefore for the measurement of liquid level in the closed container, said method can't be finished.
The purpose of this utility model aims to provide the device of liquid level in a kind of energy measurement closed container.
The utility model can't be sent measurement result the difficulty of closed container in order to solve general liquid level gauging method, adopts the magnetic line of force to come the transmission fluid surface information as information carrier.
The utility model is provided with float, and at float top installing magnet steel, float and magnet steel are positioned in the closed container.Be provided with the Hall element array, the Hall element array is positioned over the position that the closed container outside corresponds to magnet steel.Be provided with signal processing circuit, the input end of signal processing circuit is connected with the detection signal output terminal of Hall element array.Be provided with display and simulating signal output circuit, the input end of display and simulating signal output circuit connects the output terminal of signal processing circuit respectively.
Said Hall element array is made up of one group of Hall element, when the liquid level in the container changes, float drives the magnet steel respective change, the Hall element array is measured this variation, after signal processing circuit is handled, can demonstrate the result by charactron, and by output circuit output simulating signal, thereby the difficulty that general liquid level gauging method can't be sent measurement result closed container solved.
Fig. 1 is measurement of the present utility model and structural representation.
Fig. 2 is circuit theory diagrams of the present utility model.
As shown in Figure 1, float 1 top is provided with magnet steel 2, the two places closed container 3 together, Hall element array 4 places closed container 3 outsides corresponding to float 1 and magnet steel 2 positions, the input end of the detection signal output termination signal processing circuit 5 of Hall element array 4, the output terminal of signal processing circuit 5 connects nixie display 6 and simulating signal output circuit 7 respectively.As seen from Figure 1, when the liquid level in the container changes, float drives the magnet steel respective change, and the Hall element array detects this variation, is shown measurement result or is exported simulating signal by the simulating signal output circuit by nixie display after signal processing circuit is handled.Referring to Fig. 2, Hall element array 3 is by 32 Hall elements 31,32 ... 331,332 form array, and the output of each Hall element is corresponding to an operational amplifier A
1, A
2A
32Amplify operational amplifier A
1, A
2A
32Output signal be connected to 48 and select 1 electronic switch K
1, K
2K
432 of formation is selected 1 switch matrix, and 32 select 4 I/O mouth P of the output terminal order sheet processor CPU of 1 switch matrix
1.1, P
1.2, select 1 switch matrix scanning to 32, finish tracking to 32 Hall element states, operational amplifier group, 32 selects 1 switch matrix and monolithic processor to form signal processing circuit.Measurement result is by 2 I/O mouth R of CPU
3.1, P
3.2Be connected to by 4 164 chip U
1, U
2U
4With 47 sections light-emitting diode display L
1, L
2L
4The display that constitutes shows.CPU exports one road pulse-width signal in addition, and its pulse duty factor depends on the duty of each Hall element.The pulse-width signal output termination integrator of CPU, integrator is by 2 grades of series connection RC integrating circuit R
1, C
1, R
2, C
2Form, the pulse output signals of CPU is exported simulating signal behind integrator.Its course of work is: the liquid level band magnet steel and is floated, and when certain liquid level, magnet steel rests on the next door of certain Hall element, and at this moment this Hall element is exported high level, and other Hall element output low levels.That is to say, when liquid level is in diverse location, corresponding Hall element output high level, other Hall element output low levels.CPU passes through the switch matrix-scanning, and which Hall element output high level can judge easily is, where is in thereby judge present liquid level, draws the data of liquid level position through computed in software.These data are shown by display on the one hand, on the other hand by simulated output program, at the P of CPU
3.3Mouth output pulsed modulation burst signal through 2 grades of RC integrating circuit integrations, is promptly exported simulating signal again.
Claims (5)
1. magnetic-type liquid surface measuring device is characterized in that:
1) be provided with float, at float top installing magnet steel, float and magnet steel are positioned in the closed container;
2) be provided with the Hall element array, the Hall element array is positioned over the position that the closed container outside corresponds to magnet steel;
3) be provided with signal processing circuit, the input end of signal processing circuit is connected with the detection signal output terminal of Hall element array;
4) be provided with display and simulating signal output circuit, the input end of display and simulating signal output circuit connects the output terminal of signal processing circuit respectively.
2. magnetic-type liquid surface measuring device as claimed in claim 1 is characterized in that said Hall element array forms array by one group of 32 Hall element.
3. magnetic-type liquid surface measuring device as claimed in claim 1, it is characterized in that said signal processing circuit is by the operational amplifier group, 32 select 1 switch matrix and monolithic processor to form, the operational amplifier group is made up of 32 operational amplifiers, the input end of each operational amplifier is corresponding to be connected with a Hall component output, the output signal of operational amplifier is connected to 48 and selects 32 of 1 electronic switch formation to select 1 switch matrix, 32 select 4 I/O mouths of the output terminal order sheet processor of 1 switch matrix, and the measurement result output terminal of monolithic processor connects the input end of display and simulating signal output circuit respectively.
4. magnetic-type liquid surface measuring device as claimed in claim 1 is characterized in that said display is made up of 4 164 chips and 47 sections light-emitting diode displays.
5. magnetic-type liquid surface measuring device as claimed in claim 1 is characterized in that the simulating signal output circuit is made up of 2 grades of series connection RC integrating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98244233 CN2348368Y (en) | 1998-09-22 | 1998-09-22 | Magnetic liquid level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98244233 CN2348368Y (en) | 1998-09-22 | 1998-09-22 | Magnetic liquid level measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2348368Y true CN2348368Y (en) | 1999-11-10 |
Family
ID=33990408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98244233 Expired - Fee Related CN2348368Y (en) | 1998-09-22 | 1998-09-22 | Magnetic liquid level measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2348368Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936564A (en) * | 2012-11-26 | 2013-02-20 | 无锡赛德生物工程有限公司 | Ammonia supplementing device for enzyme preparation fermentation |
| CN105352566A (en) * | 2015-11-28 | 2016-02-24 | 宁波市德霖机械有限公司 | Electronic oil level detection device |
| CN107421606A (en) * | 2017-07-28 | 2017-12-01 | 珠海格力电器股份有限公司 | Liquid level detection device, detection method and water tank |
-
1998
- 1998-09-22 CN CN 98244233 patent/CN2348368Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936564A (en) * | 2012-11-26 | 2013-02-20 | 无锡赛德生物工程有限公司 | Ammonia supplementing device for enzyme preparation fermentation |
| CN105352566A (en) * | 2015-11-28 | 2016-02-24 | 宁波市德霖机械有限公司 | Electronic oil level detection device |
| CN107421606A (en) * | 2017-07-28 | 2017-12-01 | 珠海格力电器股份有限公司 | Liquid level detection device, detection method and water tank |
| CN107421606B (en) * | 2017-07-28 | 2024-01-26 | 珠海格力电器股份有限公司 | Liquid level detection device, detection method and water tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |