CN2786680Y - Device for ultrasonic measuring and controlling liquid level - Google Patents
Device for ultrasonic measuring and controlling liquid level Download PDFInfo
- Publication number
- CN2786680Y CN2786680Y CN 200520070858 CN200520070858U CN2786680Y CN 2786680 Y CN2786680 Y CN 2786680Y CN 200520070858 CN200520070858 CN 200520070858 CN 200520070858 U CN200520070858 U CN 200520070858U CN 2786680 Y CN2786680 Y CN 2786680Y
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- microcomputer
- container
- ultrasonic transmitter
- liquid level
- 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
Images
Abstract
The utility model provides a device for ultrasonic measuring and controlling liquid level, which relates to a device of automatically and accurately measuring and controlling the liquid level in a small container. The utility model is characterized in that an ultrasonic transmitter (111) is installed in the position above a container (2); an ultrasonic receiver (112) is installed in the position above the container (2) which is placed on the same horizontal plane with the ultrasonic transmitter (111); the ultrasonic transmitter (111) is connected with a microcomputer (116) through an ultrasonic transmitter interface (118); the ultrasonic receiver (112) is connected with the microcomputer (116) through an ultrasonic receiver interface (117); the output end of the microcomputer (116) is respectively connected with a motor (114) of a liquid feed pump and a liquid crystal screen (115); the outlet of the liquid feed pump (113) is connected with the inner part of the container (2). By utilizing fluctuating signals measured between an ultrasonic sensor and the liquid level in the container and processed by the microcomputer, and then by utilizing a relay to control the motor, the device for ultrasonic measuring and controlling liquid level drives the liquid feed pump to work in order to exactly add or discharge liquid.
Description
Technical field
The utility model relates to a kind of device of automatically, accurately measuring and control liquid level in the small container, belongs to highly automated measurement of liquid in container and control device field.
Background technology
At rapid shaping (Rapid Prototyping and Manufacturing, be called for short RPM or RP) technical field, when adopting ultraviolet curing process to make high-precision part, keeping the interior resin liquid level of resin storage tank accurately to be stabilized in a certain setting height is to guarantee one of condition of making high-precision part.At present, the method that assurance resin liquid level is stabilized in a certain level altitude generally is to adopt the semiconductor laser emission of lasering beam to measure the height of liquid level, is not inconsistent as the height of measurement and the height of setting, and then drive motor adds resin or discharges unnecessary resin.The shortcoming of this kind method is: because the resin that uses is for the responsive especially photosensitive resin of the light of certain section spectrum, and generally these spectrum all than broad, so than the curing that is easier to cause photosensitive resin, thereby be unfavorable for the moulding of resin.
Summary of the invention
Technical matters: the purpose of this utility model is to provide a kind of can change the signal of gathering into electric signal in real time, can provide microcomputer to calculate exact filling level in the container, and a kind of ultrasonic measurement accurately controlled by motor and solution feed pump and the device of control liquid level.
Technical scheme: the device of ultrasonic measurement of the present utility model and control liquid level, by ultrasonic transmitter, ultrasonic receiver, microcomputer, motor, solution feed pump, liquid crystal display is formed, wherein: ultrasonic transmitter is installed in the top position of container, ultrasonic receiver is installed in the top position that is in the container of same surface level with ultrasonic transmitter, ultrasonic transmitter joins by ultrasonic transmitter interface and microcomputer, ultrasonic receiver joins by ultrasonic receiver interface and microcomputer, the output terminal of microcomputer connects the solution feed pump motor respectively, liquid crystal display, the feed flow delivery side of pump is connected in the container.Ultrasonic transmitter and ultrasonic receiver apart from the distance between the predetermined level in the container less than 400mm." PB.0 " of microprocessor mouthful meets power switch pipe IRF120 by signal processing circuit through ultrasonic transmitter interface and resistance R 1, and the source electrode of power switch IRF120 connects ultrasonic transmitter.In the ultrasonic receiver; after playing the diode of Signal Spacing effect, the diode that plays the signal protection effect and being in series; the negative pole that plays the diode of Signal Spacing effect has connect the amplifier input terminal of computing amplification; the output terminal that plays the amplifier of computing amplification connects the input end of photoisolator again through current-limiting resistance R5, the output terminal of photoisolator connects the PA.0 port of microcomputer by the ultrasonic receiver interface.
Ultrasonic transmitter is installed in the top position of the corner of container, ultrasound wave through liquid level reflection back by being installed in the ultrasonic receiver reception that is in same surface level with ultrasonic receiver, and after microcomputer is handled, according to from the emission ultrasound wave to receiving hyperacoustic mistiming, ultrasonic transmitter is apart from the distance and the aerial velocity of propagation of ultrasound wave of container inner bottom part, accurate Calculation also demonstrates the height and the volume of liquid level in the container, and this height value compared with actual desired liquid level, as exceed the scope that error allows, then drive motor control solution feed pump adds or discharge liquid in time.
Beneficial effect: this ultrasonic solution level automatic control device compared with prior art has the following advantages:
1. can realize in the small container, the liquid level in the small area in real time, automatically, accurately measure and control;
2. can accurate Calculation and demonstrate the parameters such as height, volume, weight of the liquid in the small container;
3. cost is low, volume is little, easy for installation, measuring accuracy is high;
4. the response time weak point can realize not having the real-time measurement of hysteresis easily;
5. non-cpntact measurement is stable and reliable for performance, and is extremely strong to the adaptability of the physicochemical property of liquid;
6. close loop control circuit is to guarantee real-time, the accurately control of liquid level.
Description of drawings
Fig. 1 is the structural representation of this device, comprising: ultrasonic transmitter 111, ultrasonic transmitter interface 118, ultrasonic receiver 112, ultrasonic receiver interface 117, solution feed pump 113, solution feed pump motor 114, liquid crystal display 115, microcomputer 116.
Fig. 2 is the circuit theory diagrams of ultrasonic transmitter 111;
Fig. 3 is the circuit theory diagrams of ultrasonic receiver 112;
Fig. 4 is the circuit theory diagrams of microcomputer 116, ultrasonic receiver interface 117, ultrasonic transmitter interface 118.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
The device of ultrasonic measurement of the present utility model and control liquid level, by ultrasonic transmitter, ultrasonic receiver, microcomputer, motor, solution feed pump, liquid crystal display is formed, wherein: ultrasonic transmitter 111 is installed in the top position of container 2, ultrasonic receiver 112 is installed in the top position that is in the container 2 of same surface level with ultrasonic transmitter 111, ultrasonic transmitter 111 joins by ultrasonic transmitter interface 118 and microcomputer 116, ultrasonic receiver 112 joins by ultrasonic receiver interface 117 and microcomputer 116, the output terminal of microcomputer 116 connects solution feed pump motor 114 respectively, liquid crystal display 115, the outlet of solution feed pump 113 is connected in the container 2.
1) ultrasonic transmit circuit
2) ultrasonic receiver 112 circuit
3) microcomputer 116 and interface circuit
Claims (3)
1. the device of ultrasonic measurement and control liquid level, by ultrasonic transmitter, ultrasonic receiver, microcomputer, motor, solution feed pump, liquid crystal display is formed, it is characterized in that: ultrasonic transmitter (111) is installed in the top position of container (2), ultrasonic receiver (112) is installed in the top position that is in the container (2) of same surface level with ultrasonic transmitter (111), ultrasonic transmitter (111) joins by ultrasonic transmitter interface (118) and microcomputer (116), ultrasonic receiver (112) joins by ultrasonic receiver interface (117) and microcomputer (116), the output terminal of microcomputer (116) connects solution feed pump motor (114) respectively, liquid crystal display (115), the outlet of solution feed pump (113) is connected in the container (2).
2. ultrasonic measurement according to claim 1 and control liquid level device, it is characterized in that: ultrasonic transmitter (111) and ultrasonic receiver (112) apart from the distance between the interior predetermined level of container (2) less than 400mm.
3. the device of ultrasonic measurement according to claim 1 and control liquid level, " PB.0 " mouth that it is characterized in that microprocessor (116) connects power switch pipe (IRF120) by signal processing circuit through ultrasonic transmitter interface (118) and resistance (R1), and the source electrode of power switch pipe (IRF120) connects ultrasonic transmitter (111).4. the device of ultrasonic measurement according to claim 1 and control liquid level; it is characterized in that in the ultrasonic receiver (112); after playing the diode (D1) of Signal Spacing effect, the diode (D2) that plays the signal protection effect and being in series, the negative pole that plays the diode (D1) of Signal Spacing effect has met the amplifier (A of computing amplification
1) input end, play the amplifier (A of computing amplification
1) output terminal connect the input end of photoisolator (TIL117) again through current-limiting resistance R5, the output terminal of photoisolator (TIL117) connects the PA.0 port of microcomputer (116) by ultrasonic receiver interface (117).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070858 CN2786680Y (en) | 2005-04-18 | 2005-04-18 | Device for ultrasonic measuring and controlling liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070858 CN2786680Y (en) | 2005-04-18 | 2005-04-18 | Device for ultrasonic measuring and controlling liquid level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786680Y true CN2786680Y (en) | 2006-06-07 |
Family
ID=36775250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520070858 Expired - Fee Related CN2786680Y (en) | 2005-04-18 | 2005-04-18 | Device for ultrasonic measuring and controlling liquid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786680Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455999C (en) * | 2006-06-30 | 2009-01-28 | 北京奥麦特科技有限公司 | Device for ultrasonic measuring liquid level and method thereof |
| CN102681556A (en) * | 2011-03-15 | 2012-09-19 | 江苏东汇环保科技股份有限公司 | Liquid level control method of steel slag desulfurization agent storage tank |
| CN102707738A (en) * | 2012-06-07 | 2012-10-03 | 辽宁省电力有限公司本溪供电公司 | Liquid level detection and maintaining system |
| CN102999056A (en) * | 2011-09-14 | 2013-03-27 | 淮南万泰荣博照明科技有限公司 | Mining ultrasonic pulse material level monitoring device |
| CN104655234A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Water level detecting and treating method and device for water heater and water heater |
| CN105425838A (en) * | 2014-09-17 | 2016-03-23 | 联想(北京)有限公司 | Flow control device and flow control method |
| CN105840583A (en) * | 2016-05-16 | 2016-08-10 | 上海科尔本施密特活塞有限公司 | Liquid level measuring and monitoring device and liquid level measurement method for hydraulic pump |
| 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 |
| CN112654898A (en) * | 2020-12-09 | 2021-04-13 | 中国科学院声学研究所南海研究站 | Automatic triggering and self-calibrating ultrasonic rain measuring system |
-
2005
- 2005-04-18 CN CN 200520070858 patent/CN2786680Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455999C (en) * | 2006-06-30 | 2009-01-28 | 北京奥麦特科技有限公司 | Device for ultrasonic measuring liquid level and method thereof |
| CN102681556A (en) * | 2011-03-15 | 2012-09-19 | 江苏东汇环保科技股份有限公司 | Liquid level control method of steel slag desulfurization agent storage tank |
| CN102999056A (en) * | 2011-09-14 | 2013-03-27 | 淮南万泰荣博照明科技有限公司 | Mining ultrasonic pulse material level monitoring device |
| CN102707738A (en) * | 2012-06-07 | 2012-10-03 | 辽宁省电力有限公司本溪供电公司 | Liquid level detection and maintaining system |
| CN102707738B (en) * | 2012-06-07 | 2014-03-26 | 辽宁省电力有限公司本溪供电公司 | Liquid level detection and maintaining system |
| CN104655234A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Water level detecting and treating method and device for water heater and water heater |
| CN105425838A (en) * | 2014-09-17 | 2016-03-23 | 联想(北京)有限公司 | Flow control device and flow control method |
| CN105840583A (en) * | 2016-05-16 | 2016-08-10 | 上海科尔本施密特活塞有限公司 | Liquid level measuring and monitoring device and liquid level measurement method for hydraulic pump |
| 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 |
| CN112654898A (en) * | 2020-12-09 | 2021-04-13 | 中国科学院声学研究所南海研究站 | Automatic triggering and self-calibrating ultrasonic rain measuring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2786680Y (en) | Device for ultrasonic measuring and controlling liquid level | |
| US10408663B2 (en) | Ultrasonic level sensor with reflectors | |
| US7562570B2 (en) | Ultrasonic oil/water tank level monitor having wireless transmission means | |
| US7421895B1 (en) | Fluid level measuring system | |
| CN110917772B (en) | Intelligent spraying control system and method and dust suppression vehicle | |
| EP2122389A1 (en) | Fluid level measuring method and system therefor | |
| CN202025082U (en) | High-precision ultrasonic ranging device | |
| US11002587B2 (en) | Ultrasonic level sensor with sound trap | |
| US9587479B2 (en) | Velocity sensor for a plunger lift system | |
| CN109444894B (en) | Road ponding depth rapid movement measuring device and method | |
| JP5599567B2 (en) | System and method for detecting fluids | |
| US5497664A (en) | Method and apparatus for calculating flow rates through a pumping station | |
| EP2041528B1 (en) | Liquid level measurement device | |
| CN204495998U (en) | A kind of ultrasonic ranging system | |
| CN202126510U (en) | Ultrasonic rainfall measuring device based on single chip microcomputer | |
| CN101458335A (en) | Environmental-protecting type range radar by employing leadless sensing element | |
| CN201820152U (en) | Liquid level measuring and controlling system for brick making machine | |
| CN114320942B (en) | Immersible pump for solar well with intelligent power regulation function | |
| CN213274472U (en) | Ultrasonic liquid level meter with inclination angle detection function | |
| CN205011067U (en) | Accurate feed formula feeder | |
| CN108549311A (en) | Workover treatment automatic data collection analysis system and control method | |
| CN203216562U (en) | Liquid measuring device based on ultrasonic waves | |
| EP2306020A1 (en) | Method in connection with pump drive | |
| CN105911548A (en) | DSP-controller-based ultrasonic range finder | |
| CN2288425Y (en) | Ultrasonic liquid level measurer for oil tank |
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 |