CN103970158A - Automatic liquid level control device - Google Patents
Automatic liquid level control device Download PDFInfo
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- CN103970158A CN103970158A CN201410217557.0A CN201410217557A CN103970158A CN 103970158 A CN103970158 A CN 103970158A CN 201410217557 A CN201410217557 A CN 201410217557A CN 103970158 A CN103970158 A CN 103970158A
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- liquid level
- water tank
- solenoid valve
- water
- mcu controller
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Abstract
The invention relates to an automatic liquid level control device. The automatic liquid level control device comprises a water tank for reserves and a water tank for water supply. A first solenoid valve is connected to a water outlet pipe of the water tank for reserves, and the first solenoid valve is connected with the output end of an MCU through a first solenoid valve driver. The first solenoid valve is connected with a water inlet pipe of the water tank for water supply. A liquid level sensor is connected to the water tank for water supply, the output end of the liquid level sensor is connected with the input end of the MCU, a second solenoid valve is connected to the water tank for water supply, and the second solenoid valve is connected with the output end of the MCU through a second solenoid valve driver. The output end of the MCU is connected with an audible and visual alarm and a display screen, and the input end of the MCU is connected with a power source and a keyboard. According to the automatic liquid level control device, control is performed through the high-precision MCU, and the automatic liquid level control device is short in reaction time and high in control precision and automation degree.
Description
Technical field
The present invention relates to a kind of fluid level control device, be specifically related to a kind ofly can accurately automatically monitor the liquid level position of water supply installation and in the time of lack of water, automatically open the liquid-level auto-control device that valve adds water.
Background technology
Device for liquid level control in prior art generally adopts pure physical construction, common a kind of be the fluid level control device of float-ball type, comprise ball float, nylon rope, pulley, balancing weight, support, spacing shelves, connecting rod, formation switch and some other parts, its cardinal principle is according to ball float position floating on liquid level, judges the height of liquid level, according to the variation of the lifting monitoring liquid level of ball float, its shortcoming is that parts are more, complex structure, inconvenience is installed, and in use procedure, reliability is low; Another kind is electrode-type liquid level controller, comprise transformer, relay, auxiliary reclay, adjustable resistor, transistor amplifier unit and mu balanced circuit unit, this fluid level controller is only only applicable to the liquid level position control of conducting liquid, the scope of application is narrow and small, in iknsulating liquid, can not apply.
Summary of the invention
The object of the invention is, in order to overcome above-mentioned defect, provides the liquid-level auto-control device that a kind of liquid level position control is accurate, reliability is high, applied widely.
For achieving the above object, a kind of liquid-level auto-control device of the present invention's design, comprise Water-storage tank and water tank, be connected with the first solenoid valve on the rising pipe of described Water-storage tank, described the first solenoid valve connects the output terminal of MCU controller by the first electromagnetic valve driver, described the first solenoid valve is connected with the water inlet pipe of described water tank, described water tank is connected with liquid level sensor, the output terminal of described liquid level sensor connects the input end of described MCU controller, described water tank is connected with the second solenoid valve, and described the second solenoid valve connects the output terminal of MCU controller by the second electromagnetic valve driver, the output terminal of described MCU controller is connected with audible-visual annunciator and display screen, the input end of described MCU controller is connected with power supply and keyboard, described liquid level sensor comprises pressure-induced capacitance sensor and voltage to frequency converter, the input end of described pressure-induced capacitance sensor is connected with described water tank, the output terminal of described pressure-induced capacitance sensor is connected with the input end of described voltage to frequency converter, the output terminal of described voltage to frequency converter is connected with the input end of described MCU controller, the probe of pressure-induced capacitance sensor is fixed on water tank bottom, it can measure hydraulic pressure size, hydraulic pressure is directly proportional to liquid level, formula by liquid level and pressure size calculates liquid level.
In technique scheme, described liquid level sensor comprises ultrasonic distance-measuring sensor and metal forming, described metal forming is arranged on the liquid level of water tank, described ultrasonic distance-measuring sensor is arranged on the inside top face of water tank, the output terminal of described ultrasonic distance-measuring sensor is connected with the input end of described MCU controller, metal forming is attached on liquid level, can the lifting with liquid surface lifting, ultrasonic distance-measuring sensor is placed in to the inside top face of water tank and fixes, by the in good time reading out data of MCU controller, deduct measured value with water tank height again and be liquid level, then demonstrate the height value of liquid level by display screen.
Maximal value and minimum value that the present invention presets water tank liquid level by keyboard are stored in MCU controller, gather water tank liquid level value by liquid level sensor, and liquid level value is transferred to MCU controller, MCU controller is according to maximal value and the minimum value of the water tank liquid level presetting, control the open and close of the first solenoid valve and the second solenoid valve, make within water tank liquid level value remains on the scope of maximal value and minimum value, safety continuous ground supplies water.
The present invention is provided with audible-visual annunciator, when water tank liquid level not maximal value and the safe range of minimum value in, MCU controller control audible-visual annunciator sends sound and light alarm, sound all clear until the liquid level position of water tank liquid level comes back in safe range, increased the security of whole water system.
The present invention adopts pressure-induced capacitance sensor and voltage to frequency converter as liquid surface position sensor, or adopt ultrasonic distance-measuring sensor and metal forming as liquid surface position sensor, gather liquid level position signal degree of accuracy high level error little, and adopt high-precision MCU controller to control, reaction time is short, control accuracy is high, and automaticity is high.
Brief description of the drawings
Fig. 1 is integrated circuit structured flowchart of the present invention;
Fig. 2 is the circuit diagram of audible-visual annunciator of the present invention (9);
In figure: 1-Water-storage tank; 2-water tank; 3-the first solenoid valve; 4-the first electromagnetic valve driver; 5-MCU controller; 6-liquid level sensor; 7-the second solenoid valve; 8-the second electromagnetic valve driver; 9-audible-visual annunciator; 10-display screen; 11-power supply; 12-keyboard; 13-water customer group.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Liquid-level auto-control device as shown in Figure 1, comprises Water-storage tank 1 and water tank 2, is connected with the first solenoid valve 3, the first solenoid valves 3 connect MCU controller 5 output terminal by the first electromagnetic valve driver 4 on the rising pipe of Water-storage tank 1; The first solenoid valve 3 is connected with the water inlet pipe of water tank 2, water tank 2 is connected with liquid level sensor 6, the output terminal of liquid level sensor 6 connects the input end of MCU controller 5, water tank 2 is connected with the second solenoid valve 7, the second solenoid valves 7 connect MCU controller 5 output terminal by the second electromagnetic valve driver 8; The output terminal of MCU controller 5 is connected with audible-visual annunciator 9 and display screen 10, and the input end of MCU controller 5 is connected with power supply 11 and keyboard 12.
Liquid level sensor 6 comprises pressure-induced capacitance sensor and voltage to frequency converter, the input end of pressure-induced capacitance sensor is connected with water tank 2, the output terminal of pressure-induced capacitance sensor is connected with the input end of voltage to frequency converter, and the output terminal of voltage to frequency converter is connected with the input end of MCU controller 5.Pressure-induced capacitance sensor is in the time measuring the little liquid signal of flow velocity, and precision is higher, but requires liquid level pace of change comparatively slow, and distance can not be too far away, water inlet pipe and rising pipe that the present invention adopts are thinner, and Inlet and outlet water speed is suitable, and therefore pressure-induced capacitance sensor has higher precision.
Or, liquid level sensor 6 comprises ultrasonic distance-measuring sensor and metal forming, metal forming is arranged on the liquid level of water tank 2, ultrasonic distance-measuring sensor is arranged on the inside top face of water tank 2, the output terminal of ultrasonic distance-measuring sensor is connected with the input end of MCU controller 5, be not subject to the concentration of fluid to be measured and the characteristic that electric conductivity affects because ultrasound wave has, therefore measuring accuracy is high.
The present invention is with MCU controller 5 control cores, by the liquid level of liquid level sensor 6 Real-time Obtaining water tanks 2, and by display screen 10 weight of demonstration liquid level, water tank 2 in real time, maximal value and the minimum value set by keyboard 12 inputs, MCU controller 5 controls by controlling the first solenoid valve 3 break-make that Water-storage tank 1 rising pipe supplies water, and controls by controlling the second solenoid valve 7 break-make that water tank 2 rising pipes supply water:
The liquid level that monitors water tank 2 when liquid level sensor 6 is within the scope of maximal value and minimum value time, and MCU controller 5 is controlled the second solenoid valve 7 and opened, and water tank 2 rising pipes supply water to water customer group 13; When the liquid level that monitors water tank 2 when liquid level sensor 6 is less than minimum value, MCU controller 5 is controlled the first solenoid valve 3 and is opened, and Water-storage tank 1 rising pipe supplies water, and adds water to water tank 2; When the liquid level that monitors water tank 2 when liquid level sensor 6 is greater than maximal value, MCU controller 5 is controlled the first solenoid valve 3 and is turn-offed, and Water-storage tank 1 rising pipe stops supplying water, and the whole overshoot customer group 13 that can assure feed water water tank 2 feeds water continuously supplies water.
The circuit diagram of audible-visual annunciator 9 as shown in Figure 2, in the time that liquid level is greater than the maximal value that keyboard 12 sets or the minimum value that is less than setting, MCU controller 5 sends signal makes V2 occur high level, trigger buzzer warning device, hummer sends sound, prompting liquid level, not in setting range, has been strengthened the security of water system.After the liquid level of water tank 2 is replied normally, automatically terminate warning.
The content not being described in detail in this instructions belongs to the known prior art of professional and technical personnel in the field.
Claims (2)
1. a liquid-level auto-control device, it is characterized in that: comprise Water-storage tank (1) and water tank (2), on the rising pipe of described Water-storage tank (1), be connected with the first solenoid valve (3), described the first solenoid valve (3) connects the output terminal of MCU controller (5) by the first electromagnetic valve driver (4), described the first solenoid valve (3) is connected with the water inlet pipe of described water tank (2), described water tank (2) is connected with liquid level sensor (6), the output terminal of described liquid level sensor (6) connects the input end of described MCU controller (5), described water tank (2) is connected with the second solenoid valve (7), and described the second solenoid valve (7) connects the output terminal of MCU controller (5) by the second electromagnetic valve driver (8), the output terminal of described MCU controller (5) is connected with audible-visual annunciator (9) and display screen (10), the input end of described MCU controller (5) is connected with power supply (11) and keyboard (12), described liquid level sensor (6) comprises pressure-induced capacitance sensor and voltage to frequency converter, the input end of described pressure-induced capacitance sensor is connected with described water tank (2), the output terminal of described pressure-induced capacitance sensor is connected with the input end of described voltage to frequency converter, the output terminal of described voltage to frequency converter is connected with the input end of described MCU controller (5).
2. liquid-level auto-control device according to claim 1, it is characterized in that: described liquid level sensor (6) comprises ultrasonic distance-measuring sensor and metal forming, described metal forming is arranged on the liquid level of water tank (2), described ultrasonic distance-measuring sensor is arranged on the inside top face of water tank (2), and the output terminal of described ultrasonic distance-measuring sensor is connected with the input end of described MCU controller (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217557.0A CN103970158A (en) | 2014-05-17 | 2014-05-17 | Automatic liquid level control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217557.0A CN103970158A (en) | 2014-05-17 | 2014-05-17 | Automatic liquid level control device |
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| Publication Number | Publication Date |
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| CN103970158A true CN103970158A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410217557.0A Pending CN103970158A (en) | 2014-05-17 | 2014-05-17 | Automatic liquid level control device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991576A (en) * | 2015-06-04 | 2015-10-21 | 江苏日升恒隆科教设备有限公司 | Microcomputer-based full-automatic perfusion system |
| CN106933263A (en) * | 2017-03-16 | 2017-07-07 | 四川森迪科技发展股份有限公司 | A kind of cattle breeding automatic water-feeding device is with low interference automatic water supplementation control system |
| CN108931138A (en) * | 2018-08-31 | 2018-12-04 | 四川合电气科技有限公司 | A kind of arc furnace cover preparation system |
| CN110007696A (en) * | 2019-04-18 | 2019-07-12 | 首钢京唐钢铁联合有限责任公司 | A kind of automatic storehouse changing control system and method |
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| CN2844435Y (en) * | 2005-06-07 | 2006-12-06 | 长庆石油勘探局井下技术作业处 | Fracturing blender truck level stability device |
| CN201110972Y (en) * | 2007-01-16 | 2008-09-03 | 王汉澎 | Ultrasonic wave remote sense liquid level display controller |
| US20090133511A1 (en) * | 2007-11-26 | 2009-05-28 | Perkinelmer Las, Inc. | Fluid handling device with ultrasound sensor and methods and systems using same |
| CN102419518A (en) * | 2010-09-27 | 2012-04-18 | 北大方正集团有限公司 | Developing machine, developing solution feeding system and method thereof |
| CN103376142A (en) * | 2012-04-29 | 2013-10-30 | 刘铮 | Single chip microcomputer based weighing type liquid level meter |
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2014
- 2014-05-17 CN CN201410217557.0A patent/CN103970158A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844435Y (en) * | 2005-06-07 | 2006-12-06 | 长庆石油勘探局井下技术作业处 | Fracturing blender truck level stability device |
| CN201110972Y (en) * | 2007-01-16 | 2008-09-03 | 王汉澎 | Ultrasonic wave remote sense liquid level display controller |
| US20090133511A1 (en) * | 2007-11-26 | 2009-05-28 | Perkinelmer Las, Inc. | Fluid handling device with ultrasound sensor and methods and systems using same |
| CN102419518A (en) * | 2010-09-27 | 2012-04-18 | 北大方正集团有限公司 | Developing machine, developing solution feeding system and method thereof |
| CN103376142A (en) * | 2012-04-29 | 2013-10-30 | 刘铮 | Single chip microcomputer based weighing type liquid level meter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991576A (en) * | 2015-06-04 | 2015-10-21 | 江苏日升恒隆科教设备有限公司 | Microcomputer-based full-automatic perfusion system |
| CN106933263A (en) * | 2017-03-16 | 2017-07-07 | 四川森迪科技发展股份有限公司 | A kind of cattle breeding automatic water-feeding device is with low interference automatic water supplementation control system |
| CN108931138A (en) * | 2018-08-31 | 2018-12-04 | 四川合电气科技有限公司 | A kind of arc furnace cover preparation system |
| CN108931138B (en) * | 2018-08-31 | 2023-12-01 | 四川合一电气科技有限公司 | Electric arc furnace cover preparation system |
| CN110007696A (en) * | 2019-04-18 | 2019-07-12 | 首钢京唐钢铁联合有限责任公司 | A kind of automatic storehouse changing control system and method |
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Application publication date: 20140806 |
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