CN104516364A - Automatic water level control system based on single chip microcomputer - Google Patents
Automatic water level control system based on single chip microcomputer Download PDFInfo
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- CN104516364A CN104516364A CN201310468393.4A CN201310468393A CN104516364A CN 104516364 A CN104516364 A CN 104516364A CN 201310468393 A CN201310468393 A CN 201310468393A CN 104516364 A CN104516364 A CN 104516364A
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- chip microcomputer
- water level
- signal output
- signal input
- single chip
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- Control Of Non-Electrical Variables (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses an automatic water level control system based on a single chip microcomputer in the field of water level control systems. The automatic water level control system comprises a floater liquid level transmitter. The signal output end of the floater liquid level transmitter is connected with the signal input end of a preamplifier circuit. The signal output end of the preamplifier circuit is connected with the signal input end of an A/D (analog to digital) conversion unit. The signal output end of the A/D conversion unit is connected with the signal input end of the single chip microcomputer. The signal output end of the single chip microcomputer is connected with an actuating mechanism through a D/A (digital to analog) conversion unit. The signal input end of the single chip microcomputer is connected with a keyboard input unit. The signal output end of the single chip microcomputer is connected with the signal input end of a liquid crystal display. The single chip microcomputer is in communication with an upper computer. The automatic water level control system has the advantages that automation degree of the system is increased, system structure is simplified, production cost is reduced, and the system can be applied to water level control.
Description
Technical field
The present invention relates to a kind of water level control system, particularly the SCM Based water level auto control system of one.
Background technology
Because automatic technology is in the extensive utilization of industrial and mining enterprises, water level automatic control technology enters into the sight line of Design of Automatic Control System person more and more continually.The water level automatic control means of current maturation mainly contain microcomputer monitoring and comparator circuit monitors two kinds, it is compared as follows: monolithic processor control system structure relative complex, need hardware and software to support simultaneously, peripheral circuit is relatively loaded down with trivial details, but its man-machine interaction is strong, and powerful, control accuracy is high, can easily with upper machine communication, realize data sharing.Be mainly used in requiring higher occasion to control accuracy in reality is produced.Comparator circuit monitoring technique structure is simple, does not need software support, cheap, but its poor man-machine interaction and the weakness that do not possess data sharing determine it can only be applied in the less demanding general occasion of control accuracy.
Summary of the invention
The object of this invention is to provide a kind of SCM Based water level auto control system, solve the problems of the prior art, improve automaticity, simplify its structure, reduce cost.
The object of the present invention is achieved like this: a kind of SCM Based water level auto control system, comprise floating-ball fluid level transmitter, the signal output part of described floating-ball fluid level transmitter is connected with the signal input part of pre-amplification circuit, the signal output part of described pre-amplification circuit is connected with the signal input part of A/D converting unit, the described signal output part of A/D converting unit is connected with the signal input part of single-chip microcomputer, the signal output part of described single-chip microcomputer is connected with topworks through A/D conversion unit, the signal input part of described single-chip microcomputer is also connected with key input unit, the signal output part of described single-chip microcomputer is connected with the signal input part of liquid crystal display, described single-chip microcomputer also communicates with host computer.
As a further improvement on the present invention, described single-chip microcomputer is connected through RS232 bus with between host computer.
When the present invention works, the current signal sent by floating-ball fluid level transmitter enters single-chip microcomputer through prime amplification and A/D conversion, through single-chip microcomputer computing (making comparisons with the setting value of user), output digital quantity is carried out D/A conversion and give electric operator, operate it and do corresponding actions.Compared with prior art, beneficial effect of the present invention is, invention increases the automaticity of system, simplifies the structure of system, reduces manufacturing cost.The present invention can be used in water lev el control.
Accompanying drawing explanation
Fig. 1 is control principle block diagram of the present invention.
Embodiment
The SCM Based water level auto control system of one as shown in Figure 1, comprise floating-ball fluid level transmitter, the signal output part of floating-ball fluid level transmitter is connected with the signal input part of pre-amplification circuit, the signal output part of pre-amplification circuit is connected with the signal input part of A/D converting unit, the signal output part of A/D converting unit is connected with the signal input part of single-chip microcomputer, the signal output part of single-chip microcomputer is connected with topworks through A/D conversion unit, the signal input part of single-chip microcomputer is also connected with key input unit, the signal output part of single-chip microcomputer is connected with the signal input part of liquid crystal display, single-chip microcomputer also communicates with host computer, be connected through RS232 bus between single-chip microcomputer with host computer.
When the present invention works, the current signal sent by floating-ball fluid level transmitter enters single-chip microcomputer through prime amplification and A/D conversion, through single-chip microcomputer computing (making comparisons with the setting value of user), output digital quantity is carried out D/A conversion and give electric operator, operate it and do corresponding actions.
Those skilled in the art, under the condition not departing from the spirit and scope of the present invention that claims are determined, can also carry out various amendment to above content.Therefore scope of the present invention is not limited in above explanation, but determined by the scope of claims.
Claims (2)
1. a SCM Based water level auto control system, it is characterized in that, comprise floating-ball fluid level transmitter, the signal output part of described floating-ball fluid level transmitter is connected with the signal input part of pre-amplification circuit, the signal output part of described pre-amplification circuit is connected with the signal input part of A/D converting unit, the described signal output part of A/D converting unit is connected with the signal input part of single-chip microcomputer, the signal output part of described single-chip microcomputer is connected with topworks through D/A conversion unit, the signal input part of described single-chip microcomputer is also connected with key input unit, the signal output part of described single-chip microcomputer is connected with the signal input part of liquid crystal display, described single-chip microcomputer also communicates with host computer.
2. the SCM Based water level auto control system of one according to claim 1, is characterized in that, described single-chip microcomputer is connected through RS232 bus with between host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310468393.4A CN104516364A (en) | 2013-09-30 | 2013-09-30 | Automatic water level control system based on single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310468393.4A CN104516364A (en) | 2013-09-30 | 2013-09-30 | Automatic water level control system based on single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104516364A true CN104516364A (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310468393.4A Pending CN104516364A (en) | 2013-09-30 | 2013-09-30 | Automatic water level control system based on single chip microcomputer |
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| CN (1) | CN104516364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898715A (en) * | 2015-05-21 | 2015-09-09 | 玉林师范学院 | Millimeter-level liquid level control system based on pressure transducer |
-
2013
- 2013-09-30 CN CN201310468393.4A patent/CN104516364A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898715A (en) * | 2015-05-21 | 2015-09-09 | 玉林师范学院 | Millimeter-level liquid level control system based on pressure transducer |
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Application publication date: 20150415 |
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| WD01 | Invention patent application deemed withdrawn after publication |