CN105867444A - Ultrasonic liquid level measurement and automatic control device - Google Patents
Ultrasonic liquid level measurement and automatic control device Download PDFInfo
- Publication number
- CN105867444A CN105867444A CN201610339906.5A CN201610339906A CN105867444A CN 105867444 A CN105867444 A CN 105867444A CN 201610339906 A CN201610339906 A CN 201610339906A CN 105867444 A CN105867444 A CN 105867444A
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- China
- Prior art keywords
- liquid level
- chip microcomputer
- automaton
- level detection
- supersonic liquid
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses an ultrasonic liquid level measurement and automatic control device. A hardware part of the ultrasonic liquid level measurement and automatic control device mainly comprises a 52 single chip microcomputer (1), an ultrasonic ranging probe, a pulse generation circuit (2), a D/A conversion module (3), a nixie tube displayer (4), an electromagnetic relay switch, a buzzer (5) and the like; a software part is mainly a single chip microcomputer processing procedure. The liquid level is detected through the ultrasonic probe, data are transmitted to the single chip microcomputer for data processing, displayed through a nixie tube and compared according to a set threshold value, corresponding signals are sent to an electromagnetic relay and the buzzer, so that the electromagnetic relay and the buzzer can make corresponding actions, a feeding port and a discharging port are controlled, and the liquid level is controlled in a set range. By means of the device, real-time monitoring and control of the liquid level can be realized, and the liquid level is automatically adjusted in a proper range. The workload of workers can be effectively reduced, the cost is low, and the ultrasonic liquid level measurement and automatic control device has wide application value.
Description
Technical field
The invention belongs to industrial automation, especially relate to the detection of a kind of SCM Based supersonic liquid level and automaton, the safety range particularly to liquid level controls and over range alarm method.
Background technology
Owing to ultrasound wave is prone to directional transmissions, good directionality, the intensity advantage that need not directly contact easy to control with object being measured, it it is the promising approach as liquid height measuring.Ultrasonic measuring distance technology have noncontact, in high precision, the advantage such as price is low, easy to use, be widely used in the fields such as commercial production, medical inspection, daily life.Sound wave is received by same sensor or ultrasonic receiver after liquid surface reflects, it is converted into the signal of telecommunication by piezoquartz or magnetostrictive device, and calculated the sensor distance to fluid to be measured surface by the time between transmitting and the reception of sound wave, can be widely used for various liquid and the measurement of solid material height.
Commercial production exists a large amount of storage and produces the fluid reservoir of material and for carrying out the reactor of chemical reaction, in actual production process, the problems such as the height due to the storage Acidity of Aikalinity of liquid and fluid reservoir affect the various aspects of production to the Detection & Controling of liquid level, automatically control liquid level and have height and be worth.
In existing technology, mostly use and show after level detection, the valve one of Artificial Control feed inlet and outlet the method controlling liquid level, patent of the present invention provides a kind of supersonic liquid level detection and automatic control system, realize the automatic Detection & Controling of liquid level, decrease manual intervention.
Summary of the invention
The technical problem to be solved is: provide a kind of supersonic liquid level detection and automaton, realize the automatic Detection & Controling of liquid level, device complete detection and control with level range, it is achieved be automatically adjusted, thus decrease manual intervention, tentatively realize automatization.
A kind of supersonic liquid level detection and automaton, system includes that controller (1), transmitting-receiving separate ultrasound probe (2), D/A modular converter (3), display module (4), automatically controls and alarm module (5)；Described controller is STC89C52 single-chip microcomputer；Described ultrasonic ranging probe is transmitting-receiving separate type probe, is connected by universaling I/O port with single-chip microcomputer；Described display module is 4 common cathode charactrons, is connected by universaling I/O port with single-chip microcomputer；Described D/A modular converter is pcf8591 module, and for the analog output of data, module is connected by universaling I/O port with single-chip microcomputer；Described automatically control and alarm module uses 5V electromagnetic relay switch and passive buzzer to form, be connected by universaling I/O port with single-chip microcomputer；For automatically controlling part for control liquid level at proper range, automaton is utilized to realize reporting to the police and feed inlet and outlet switch valve open and close controlling when it exceeds or falls below scope；Described device may utilize the simulation output of D/A modular converter and realizes being connected with on-the-spot other control systems.There is favorable compatibility.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated:
Fig. 1 is the detection of a kind of supersonic liquid level of the present invention and the system block diagram of automaton.
Fig. 2 is the detection of a kind of supersonic liquid level of the present invention and the hardware connection figure of automaton.
Fig. 3 is the detection of a kind of supersonic liquid level of the present invention and the workflow schematic diagram of automaton.
Detailed description of the invention
With specific embodiment, this patent is described in further detail below in conjunction with the accompanying drawings.
This system described utilizes single-chip microcomputer to produce pulse signal and delivers to ultrasonic ranging probe by I/O oral instructions, make probe feedback corresponding signal and pass single-chip microcomputer back, single-chip microcomputer is utilized to carry out corresponding data process, and record distance by numeral method, realize digital simulationization by D/A modular converter to export, simultaneously according to comparing with set point, it is achieved the on-off control of feed inlet and outlet valve is realized the holding of liquid level, and determines whether to send alarm according to comparing.
As it is shown on figure 3, the job step of the detection of a kind of supersonic liquid level and automaton is as follows:
Step one, when, after system electrification, single-chip microcomputer produces the pulse signal of one group of 40kHz, export ultrasound probe by P3.0 mouth, simultaneously single-chip microcomputer start intervalometer；
After step 2, ultrasound probe receive excitation, transmitting probe sends ultrasonic signal, runs into interface reflection, and receiving transducer receives corresponding ultrasonic signal, and passes single-chip microcomputer P3.1 mouth back；
Step 3, single-chip microcomputer P3.1 mouth receive signal, are read by timer value simultaneously, calculate liquid level according to setting formula；
Step 4, single-chip microcomputer control charactron by P1 mouth and P2.4-P2.7 mouth and carry out liquid level output, by P2.0, P2.1 mouth, liquid level numerical value are sent into D/A modular converter, for the analog output of data simultaneously；
Step 5, single-chip microcomputer are by contrasting with setting value, determine whether liquid level meets set point, corresponding points bright green LED lampet, do not meet and carry out reporting to the police and control corresponding relay Guan Bi 5s (higher than scope then closing control charging aperture switch relay, then close discharging opening switch relay less than scope).
Claims (8)
1. supersonic liquid level detection and an automaton, system includes that controller, transmitting-receiving separate ultrasonic ranging
Probe, D/A modular converter, display module, automatically control and alarm module.
2. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that described controller
For STC89C52 single-chip microcomputer.
3. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that described ultrasound wave
Range finding probe is transmitting-receiving separate type probe, is connected by universaling I/O port with single-chip microcomputer.
4. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that described display mould
Block is 4 common cathode charactrons, is connected by universaling I/O port with single-chip microcomputer.
5. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that described D/A turns
Die change block is PCF8591 module, and for the analog output of data, module is with single-chip microcomputer by universaling I/O port even
Connect.
6. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that described automatic control
System and alarm module use 5V electromagnetic relay switch to form with passive buzzer, with single-chip microcomputer by general purpose I/O
Mouth connects.
7. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that for control automatically
System part at proper range, utilizes device described in right 6 to realize report for control liquid level when it exceeds or falls below scope
Police and feed inlet and outlet switch valve open and close controlling.
8. a kind of supersonic liquid level detection as described in right 1 and automaton, it is characterised in that described device can
Utilize analog output as described in right 5 to realize with on-the-spot other control systems to be connected, there is favorable compatibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339906.5A CN105867444A (en) | 2016-05-19 | 2016-05-19 | Ultrasonic liquid level measurement and automatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339906.5A CN105867444A (en) | 2016-05-19 | 2016-05-19 | Ultrasonic liquid level measurement and automatic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105867444A true CN105867444A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610339906.5A Pending CN105867444A (en) | 2016-05-19 | 2016-05-19 | Ultrasonic liquid level measurement and automatic control device |
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| Country | Link |
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| CN (1) | CN105867444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367210A (en) * | 2020-03-19 | 2020-07-03 | 上海电子信息职业技术学院 | Embedded intelligent liquid level detection control system |
| CN113029292A (en) * | 2021-03-19 | 2021-06-25 | 青海西钢自动化信息技术有限公司 | Application of ultrasonic detector in oil-gas lubrication of rolling mill |
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| DE3642406A1 (en) * | 1986-12-11 | 1988-06-23 | Kett Reinhold Dipl Ing Fh | Electronic monitoring and control device for filling safety means |
| CN1598174A (en) * | 2004-07-26 | 2005-03-23 | 谭启仁 | Water tank of closet with water lever sign |
| CN201110972Y (en) * | 2007-01-16 | 2008-09-03 | 王汉澎 | Ultrasonic wave remote sense liquid level display controller |
| CN201820152U (en) * | 2010-10-11 | 2011-05-04 | 黄冬来 | Liquid level measuring and controlling system for brick making machine |
| CN202067156U (en) * | 2011-05-25 | 2011-12-07 | 李彬林 | Remote water level monitoring device |
| CN202533812U (en) * | 2011-12-25 | 2012-11-14 | 黄石职业技术学院 | A liquid level control system of a container |
| CN204203795U (en) * | 2014-11-26 | 2015-03-11 | 徐州中矿凯锐科技有限公司 | A kind of intelligent wireless liquid level monitor |
| CN105005329A (en) * | 2015-07-28 | 2015-10-28 | 太原理工大学 | Mining automatic water drainage device applying carrier wave |
-
2016
- 2016-05-19 CN CN201610339906.5A patent/CN105867444A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642406A1 (en) * | 1986-12-11 | 1988-06-23 | Kett Reinhold Dipl Ing Fh | Electronic monitoring and control device for filling safety means |
| CN1598174A (en) * | 2004-07-26 | 2005-03-23 | 谭启仁 | Water tank of closet with water lever sign |
| CN201110972Y (en) * | 2007-01-16 | 2008-09-03 | 王汉澎 | Ultrasonic wave remote sense liquid level display controller |
| CN201820152U (en) * | 2010-10-11 | 2011-05-04 | 黄冬来 | Liquid level measuring and controlling system for brick making machine |
| CN202067156U (en) * | 2011-05-25 | 2011-12-07 | 李彬林 | Remote water level monitoring device |
| CN202533812U (en) * | 2011-12-25 | 2012-11-14 | 黄石职业技术学院 | A liquid level control system of a container |
| CN204203795U (en) * | 2014-11-26 | 2015-03-11 | 徐州中矿凯锐科技有限公司 | A kind of intelligent wireless liquid level monitor |
| CN105005329A (en) * | 2015-07-28 | 2015-10-28 | 太原理工大学 | Mining automatic water drainage device applying carrier wave |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367210A (en) * | 2020-03-19 | 2020-07-03 | 上海电子信息职业技术学院 | Embedded intelligent liquid level detection control system |
| CN113029292A (en) * | 2021-03-19 | 2021-06-25 | 青海西钢自动化信息技术有限公司 | Application of ultrasonic detector in oil-gas lubrication of rolling mill |
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Application publication date: 20160817 |