CN2472203Y - Level sensor - Google Patents
Level sensor Download PDFInfo
- Publication number
- CN2472203Y CN2472203Y CN 01207708 CN01207708U CN2472203Y CN 2472203 Y CN2472203 Y CN 2472203Y CN 01207708 CN01207708 CN 01207708 CN 01207708 U CN01207708 U CN 01207708U CN 2472203 Y CN2472203 Y CN 2472203Y
- Authority
- CN
- China
- Prior art keywords
- liquid level
- signal processing
- level sensor
- chip microcomputer
- processing circuit
- 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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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model belongs to the technical field of liquid level measuring and control, which comprises a casing, a metal sounding electrode, and a signal processing circuit. The utility model is characterized in that a built-in single-chip microcomputer serve as the main component of the signal processing circuit; the control circuit is simplified and easy for use by converting the high or the low of the liquid level into a switch signal or a level signal. The utility model has the advantage of providing three different structures to adapt to different application environments, such as a vertical insertion type, a flange type and a throw-in type.
Description
The utility model belongs to the liquid level controlling field.
Existing now application microprocessor is the liquid level sensor of single-chip microcomputer as signal processing circuit, as " electronics newspaper " bound volume in 2000 (on) content described in the 250th page the article " with the automatic water supply system of 8051 single-chip microcomputers ": the differing heights at water tower installs and fixes motionless metal bar, situation of change with the perception water level, one of them metal bar connects positive supply, other metal bar connects the I/O mouth of single-chip microcomputer, the level height of designing program and judging corresponding I/O mouth, through computing, output control signal control pump motor, reach the purpose of control water level, program listing also listed in this piece article.
But, the application of above-mentioned liquid level sensor is very inconvenient, because it requires application person must have certain single-chip microcomputer application expertise, can design corresponding circuit and carry out programing work, if be unfamiliar with single-chip microcomputer, do not have one-chip machine simulation and programming device then be difficult to use.
The purpose of this utility model provides the three kinds of liquid level sensors that can conveniently use.
The technical scheme that realizes above purpose is: built-in microcontroller is the main element of single-chip microcomputer as signal processing circuit in liquid level sensor, the I/O mouth of single-chip microcomputer links to each other with exploring electrode, with cable input, output signal is connected with outside other control circuit.
Because single-chip microcomputer can be done various computings, the part single-chip microcomputer also has parts such as A/D, SPI, IIC, built-in single-chip microcomputer in the liquid level sensor makes liquid level sensor have very strong function, directly output switching signal or level signal, use convenient, application person needn't be concerned about the work of single-chip microcomputer in the sensor, also need not carry out programing work, as long as just passable according to liquid level sensor output signal design correspondent control circuits, like this, the application of liquid level sensor will be very simple.
Description of drawings:
Accompanying drawing 1 is the liquid level sensor principle schematic.
Accompanying drawing 2 is direct insertion liquid level sensor structural drawing.
Accompanying drawing 3 is flange form liquid level sensor structural drawing.
Accompanying drawing 4 is throw-in type liquid level sensor structural drawing.
Below, be described further in conjunction with the accompanying drawings:
Accompanying drawing 1 is the liquid level sensor principle schematic.Single-chip microcomputer 3 is built in the liquid level sensor 2, and its I/O mouth links to each other with exploring electrode (2) 1,6 at least, and input signal 4 links to each other with other circuit by cable with output signal 5.
Embodiment of the present utility model is as follows:
Embodiment one: see accompanying drawing 2, the metal detection electrode (at least 2) 10,11,12 of mutually insulated passes the signal processing circuit 8 that is built-in with single-chip microcomputer in stay pipe 9 and the electrical box 7 and links to each other, and input, output signal link to each other with other circuit by cable 13.This programme is applicable to vertical insertion type, and the exploring electrode of different length can be measured the liquid level of differing heights.
Embodiment two: see accompanying drawing 3, sensor outer housing 14 is a form of flanges, flange size on size and the liquid container adapts, the signal processing circuit 16 of built-in single-chip microcomputer places in the flange hole, isolate with liquid in container, exploring electrode (at least 2) 15,17 links to each other with circuit 16, and input, output signal communicate with other circuit by cable 18.As long as on the different height of liquid container, flange port is set, liquid level sensor is installed, but with regard to the measuring liquid level situation.This programme is applicable to the liquid level controlling of large-volume receptacle.
Embodiment three: see accompanying drawing 4, liquid level sensor shell 20 is a column, water-tight, can drop in the liquid, the signal processing circuit 21 of built-in single-chip microcomputer places its inside, and isolates exploring electrode (at least 2) 22,23 contact liqs with liquid, and link to each other with signal processing circuit 21, input, output signal are drawn with other circuit by water-tight cable 19 and are communicated.This programme is applicable to the liquid level controlling of dark container.
Claims (3)
1. a liquid level sensor is made up of at least 2 metal bar exploring electrodes, stay pipe (9), electrical box (7) and signal processing circuit (8), and it is characterized in that: described signal processing circuit is built-in with single-chip microcomputer as main element.
2. a liquid level sensor is made up of shell (14), 2 metal detection electrodes, signal processing circuits (16) at least, and it is characterized in that: (1) described signal processing circuit is built-in with single-chip microcomputer as main element; (2) described shell is the flange shape, and the flange on its size and the liquid container adapts.
3. a liquid level sensor is made up of shell (20), 2 metal detection electrodes, signal processing circuits (21) at least, and it is characterized in that: (1) described signal processing circuit is built-in with single-chip microcomputer as main element; (2) described shell is the column of water-tight, draws signal by water-proof cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01207708 CN2472203Y (en) | 2001-03-22 | 2001-03-22 | Level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01207708 CN2472203Y (en) | 2001-03-22 | 2001-03-22 | Level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2472203Y true CN2472203Y (en) | 2002-01-16 |
Family
ID=33628030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01207708 Expired - Fee Related CN2472203Y (en) | 2001-03-22 | 2001-03-22 | Level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2472203Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839244A (en) * | 2010-04-30 | 2010-09-22 | 扬州皓钢泵业科技有限公司 | Automatic water guide device of sewage pump |
| CN101919656A (en) * | 2010-07-29 | 2010-12-22 | 九阳股份有限公司 | Liquid level detection method of soymilk machine |
| CN105241521A (en) * | 2015-11-18 | 2016-01-13 | 珠海市声驰电器有限公司 | Water level detection circuit |
-
2001
- 2001-03-22 CN CN 01207708 patent/CN2472203Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839244A (en) * | 2010-04-30 | 2010-09-22 | 扬州皓钢泵业科技有限公司 | Automatic water guide device of sewage pump |
| CN101919656A (en) * | 2010-07-29 | 2010-12-22 | 九阳股份有限公司 | Liquid level detection method of soymilk machine |
| CN101919656B (en) * | 2010-07-29 | 2012-07-11 | 九阳股份有限公司 | Liquid level detection method of soymilk machine |
| CN105241521A (en) * | 2015-11-18 | 2016-01-13 | 珠海市声驰电器有限公司 | Water level detection circuit |
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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 |