CN2147571Y - Microcomputer liquid level controller - Google Patents
Microcomputer liquid level controller Download PDFInfo
- Publication number
- CN2147571Y CN2147571Y CN 92245745 CN92245745U CN2147571Y CN 2147571 Y CN2147571 Y CN 2147571Y CN 92245745 CN92245745 CN 92245745 CN 92245745 U CN92245745 U CN 92245745U CN 2147571 Y CN2147571 Y CN 2147571Y
- Authority
- CN
- China
- Prior art keywords
- liquid level
- circuit
- level controller
- automatic
- liquid
- 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
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a multifunctional and intelligent liquid level controller which mainly solves the problems of the existing liquid level controller of no phase loss and no liquid alarm protection function. The automatic liquid level controller is mainly composed of a single-chip computer, a liquid level detecting circuit connected with the single-chip computer, a phase lost detecting circuit, an automatic reset circuit, a timing and function setting circuit, a display circuit, a drive circuit, a silk hammer sensor and a sensing head arranged at a liquid inlet. Besides the automatic detection, the control and the display functions of the high and the low liquid level, the utility model also has the detection and the warning functions of phase loss and no liquid and the function of the acoustic-optic display. In the package and the transportation process, the silk can be twined, so the package and the transportation are very convenient.
Description
The utility model relates to a kind of Detection ﹠ Controling device of liquid level, particularly a kind of automatic loading water that is applicable to water tower, high building water tank, the micro computer fluid level controller of sulfuric acid, nitric acid and the control of other liquids money high level tank liquid level.
At present, the domestic fluid level controller that generally adopts mostly has only high and low liquid level control, and promptly liquid level reaches low level and opens electric pump, and liquid level reaches the high-order electric pump that closes.Its weak point is: be not provided with safety protective circuit, in case the power supply phase shortage just can make burn-down of electric motor; In case aneroid, electric pump will dally, and forwards liquid always to and be extracted into till the high position, and this both wasted energy, and had shortened the serviceable life of electric pump again; In addition, liquid level sensor mostly is the rigidity rod-type, and is very inconvenient in transportation and sale.
The purpose of this utility model is exactly to provide a kind of intelligent fluid level controller automatic/hand function, that can carry out detection, control and the demonstration of two position, phase shortage, aneroid that has at above-mentioned weak point.
Technical solution of the present utility model is: a kind of micro computer fluid level controller, it is characterized in that: comprise an one-chip computer, the input/output port of this one-chip computer connects a timing and function setting circuit, liquid level detection circuit of being made up of liquid level sensor and comparison amplifier A1, lack detection circuit, a driving circuit with automatic/hand function, an automatic reset circuit and the display circuit of being made up of oscillator that can show phase shortage, aneroid and two position that constitutes through isolated amplifier A2 and three-phase power line respectively.
Also be provided with one in the liquid level detection circuit in the utility model technical solution and can detect the sensing head that inlet has no liquid.
The silk hammer sensor that liquid level sensor in the utility model technical solution can be made for metal material.
The utility model compared with prior art has following characteristics:
1, owing to adopt one-chip computer, making liquid level control have the automatic/hand function, and reliability is greatly improved, is intelligent, multi-functional fluid level controller.
2, owing to be provided with lack detection circuit, thereby when the motor phase shortage, driving circuit can be controlled motor and shut down, and the demonstration of light emitting diode phase shortage is arranged simultaneously, can avoid burn-down of electric motor.
3, owing to be provided with the sensing head that can detect no liquid, thereby when aneroid, just can control motor and shut down, can avoid the aneroid of electric pump to dally at inlet.
4,, thereby in sale, transportation, tinsel can be coiled owing to an employing silk hammer sensor, very convenient.
5, owing to be provided with display circuit, when aneroid, phase shortage occurring, or when reaching high and low liquid level, just have light and show, be convenient to people's monitoring and maintenance.
Accompanying drawing is a circuit diagram of the present utility model, and book extract accompanying drawing as an illustration.
The utility model is described in further detail below in conjunction with accompanying drawing: as shown in the figure, 8031 one-chip computers 1 constitute computer control circuit with memory under program EPROM and address latch S.Regularly be formed by connecting by timer T and 8031 one-chip computers, 1 input/output port, can carry out corresponding digital the setting according to different purposes with function setting circuit 7.LM324 integrated circuit A1 and 8031 one-chip computers 1 and silk hammer sensor L, H, GND, sensing head K constitute liquid level detection circuit 3, can handle and control by the program of solidifying according to detected unlike signal.4N33 photoelectrical coupler A2 is connected with the three-phase supply of 8031 one-chip computers 1 and motor D respectively, form lack detection circuit 5, if phase shortage, a, b after 4N33 photoelectrical coupler A2 amplifies, the phase place and the amplitude of c three-phase signal will have than big difference, cpu is by comparing, close electric pump D, B, pilot relay J1 conducting 1 minute.Relay J 1, J2, K switch 1, A.C. contactor CJ constitute driving circuit 6, regulate the automatic/hand position by K switch 1, and electric bell CL makes the usefulness of phase shortage, aneroid warning.555 integrated circuit and 8031 one-chip computers, 1 input/output port constitute automatic reset circuit 4, and when cpu does not work or works when undesired, automatic reset circuit 4 is starting oscillation just, and cpu is just running again also.Light emitting diode DE, DY, DX, DH, DL and resistance thereof constitute display circuit 2, can distinguish display power supply, aneroid, phase shortage, a high position and low level.
Claims (3)
1, a kind of micro computer fluid level controller, it is characterized in that: comprise an one-chip computer (1), the input/output port of this one-chip computer (1) connects a timing and function setting circuit (7) respectively, a liquid level detection circuit (3) of forming by liquid level sensor and comparison amplifier A1, lack detection circuit (5) through isolated amplifier A2 and three-phase power line formation, driving circuit (6) with automatic/hand function, an automatic reset circuit of forming by oscillator (4), with one can show phase shortage, aneroid, the display circuit of two position (2).
2, micro computer fluid level controller according to claim 1 is characterized in that: described liquid level sensor is the silk hammer sensor that metal material is made.
3, micro computer fluid level controller according to claim 1 and 2 is characterized in that: be provided with one in the described liquid level detection circuit (3) and can detect the sensing head that inlet has no liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92245745 CN2147571Y (en) | 1992-12-29 | 1992-12-29 | Microcomputer liquid level controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92245745 CN2147571Y (en) | 1992-12-29 | 1992-12-29 | Microcomputer liquid level controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2147571Y true CN2147571Y (en) | 1993-11-24 |
Family
ID=33784590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92245745 Expired - Fee Related CN2147571Y (en) | 1992-12-29 | 1992-12-29 | Microcomputer liquid level controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2147571Y (en) |
-
1992
- 1992-12-29 CN CN 92245745 patent/CN2147571Y/en not_active Expired - Fee Related
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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 |