CN101413820A - Method and apparatus for detecting and controlling liquid level by float ball - Google Patents
Method and apparatus for detecting and controlling liquid level by float ball Download PDFInfo
- Publication number
- CN101413820A CN101413820A CNA2008102225095A CN200810222509A CN101413820A CN 101413820 A CN101413820 A CN 101413820A CN A2008102225095 A CNA2008102225095 A CN A2008102225095A CN 200810222509 A CN200810222509 A CN 200810222509A CN 101413820 A CN101413820 A CN 101413820A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- described ball
- ball lever
- switches
- switch
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a method for detecting and controlling liquid level by a floating ball and a device thereof, and aims at achieving a liquid level measurement and control technology which has high precision, low cost, easy realization, and being convenient and fast. The liquid level detection device comprises the floating ball, a ball lever and a processing unit, wherein, the floating ball is used for moving along the ball lever with the change of the liquid level, and controlling a switch on the ball lever to turn on or turn off in the moving process; the ball lever is used for providing a traveling rail for the floating ball, and is provided with at least two switches, and a distance between any two neighboring switches is set within a certain threshold range so that the ball lever controls only one switch to turn on or two neighboring switches to simultaneously turn on; and the processing unit is used for determining liquid level information according to status of the switches on the ball lever.
Description
Technical field
The present invention relates to liquid level prosecution technical field, relate in particular to a kind of method of utilizing ball float to carry out Level Detection and control, device.
Background technology
In the detection technique field of liquid level, the mode of following several measuring liquid level variations is arranged at present.
The level gauging mode of mode one, continuous type:
By the continuous variation of principle measuring liquid level such as ultrasound wave, electric capacity, pressure and magnetic effect, this metering system is called the level gauging mode of continuous type.But, adopt the cost of level gauging mode of this continuous type higher, and be not suitable for the level gauging under the lower situation of whole liquid level.For example, when whole liquid level during less than 10 centimetres, general continuous level gauging mode is just inapplicable.
Mode two, float switch formula level gauging mode:
Float switch formula level gauging mode, promptly pass through the conducting or the disconnection of ball float controlling switch, ball float moves along with the variation of liquid level, when moving to a certain switch, control this switch conduction, thereby, determine the position of liquid level and the information such as change direction of liquid level according to the residing position of the switch of conducting.Adopt the device of float switch formula level gauging mode to have the advantage of simple in structure, low cost, dependable performance.
But, adopt existing float switch formula level gauging mode to carry out in the process of level gauging, only there are two kinds of on off states, promptly have only a switch conduction or all switches all to disconnect.So-called all switches all disconnect, and are because ball float moves between two switches, what uncontrollable any one switch conduction caused.Thereby cause to determine liquid level information such as liquid level position and liquid level variation direction in this case, thereby reduced the degree of accuracy of level gauging and control.
A kind of sensor that utilizes magnetic reed switch to measure industrial steam boiler steam water-level height has also been proposed in the prior art.This sensor has connect a magnetic reed switch array in addition and has reflected liquid level change outside floating drum.Its shortcoming is that structure is complicated, overall volume is bigger, is not suitable for general level gauging and control.
Summary of the invention
The embodiment of the invention provides a kind of method of utilizing ball float to carry out Level Detection and control, device, in order to realize that degree of accuracy is higher, cost is lower, be easy to realize, conveniently level gauging and control technology.
A kind of liquid level detection device that the embodiment of the invention provides comprises: ball float, ball lever and processing unit;
Described ball float is used for the variation along with liquid level, moves the conducting and the disconnection of the switch in moving process on the described ball lever of control along described ball lever;
Described ball lever, be used to described ball float that moving track is provided, and be provided with at least two switches, the distance between two adjacent arbitrarily switches is arranged in certain threshold range, so that the control of described ball float has only a switch conduction or adjacent two switches conducting simultaneously;
Described processing unit is used for determining liquid level information according to the on off state on the described ball lever.
A kind of fluid level control device that the embodiment of the invention provides comprises: ball float, ball lever, processing unit and control module;
Described ball float is used for the variation along with liquid level, moves the conducting and the disconnection of the switch in moving process on the described ball lever of control along described ball lever;
Described ball lever, be used to described ball float that moving track is provided, and be provided with at least two switches, the distance between two adjacent arbitrarily switches is arranged in certain threshold range, so that the control of described ball float has only a switch conduction or adjacent two switches conducting simultaneously;
Described processing unit is used for determining liquid level information according to the on off state on the described ball lever;
Described control module is used for according to described liquid level information Control liquid level.
A kind of liquid-level detecting method that the embodiment of the invention provides, at least two switches of setting on ball lever, and the distance between two adjacent arbitrarily switches in advance are arranged in certain threshold range, and described method comprises:
When liquid level change, ball float moves along described ball lever, and the on off state of controlling on the described ball lever is: have only a switch conduction, perhaps adjacent two switches conducting simultaneously;
According to the on off state on the described ball lever, determine liquid level information.
A kind of liquid level controlling method that the embodiment of the invention provides, at least two switches of setting on ball lever, and the distance between two adjacent arbitrarily switches in advance are arranged in certain threshold range, and described method comprises:
When liquid level change, ball float moves along described ball lever, and the on off state of controlling on the described ball lever is: have only a switch conduction, perhaps adjacent two switches conducting simultaneously;
According to the on off state on the described ball lever, determine liquid level information, according to described liquid level information Control liquid level.
The embodiment of the invention by the variation of ball float along with liquid level, moves along ball lever, the conducting and the disconnection of the switch in moving process on the described ball lever of control; Described ball lever provides moving track for described ball float, and be provided with at least two switches, distance between two adjacent arbitrarily switches is arranged in certain threshold range, so that the control of described ball float has only a switch conduction or adjacent two switches conducting simultaneously; Processing unit is according to the on off state on the described ball lever, determine liquid level information, thereby can be according to this liquid level information Control liquid level, make that the degree of accuracy of Detection ﹠ Controling of liquid level is higher, and the apparatus structure of realizing this technology is simple, volume is small and exquisite, low price, dependable performance, thus described level gauging of the embodiment of the invention and control technology be a kind of degree of accuracy height, convenient and swift, be easy to realize, lower-cost level gauging and control technology.
Description of drawings
The general structure synoptic diagram of a kind of fluid level control device that Fig. 1 provides for the embodiment of the invention;
The inner structure synoptic diagram of a kind of ball float magnetic reed switch that Fig. 2 provides for the embodiment of the invention;
A kind of pump by liquid level sensor and scalable flow that Fig. 3 provides for the embodiment of the invention is realized the apparatus structure synoptic diagram of liquid level control;
The schematic flow sheet of a kind of liquid-level detecting method that Fig. 4 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method and device that utilizes ball float to realize Level Detection and control, in order to realize that degree of accuracy is higher, cost is lower, be easy to realization, conveniently level gauging and control technology.
Referring to Fig. 1, a kind of fluid level control device that the embodiment of the invention provides comprises: detecting unit 11, processing unit 12 and control module 13.
Detecting unit 11 is used for liquid level is detected.
Preferably, detecting unit 11 is made up of ball float, the ball lever that is provided with two switches at least.
Preferably, described ball float is the ball float that contains magnet, and described switch is a magnetic reed switch.
At present, utilizing the ball float contain magnet to come the conducting of gauge tap and disconnect is the most cheap the simplest way, and certainly, the ball float and the switch of other types also are fine, for example: detect the ball float of liquid level and switch etc. with the principle of light correlation, refraction.
Described ball float is controlled the state that magnetic reed switch on this ball lever is in conducting or disconnection by the magnet of self in the process that moves along ball lever.Described ball lever, for described ball float provides moving track, and be provided with at least two switches, the distance between two adjacent arbitrarily switches is arranged in certain threshold range, so that the control of described ball float has only a switch conduction or adjacent two magnetic reed switchs conducting simultaneously.
Thereby normal liquid level can be arranged on the position of certain adjacent two magnetic reed switchs conducting simultaneously, any one magnetic reed switch disconnects can judge that liquid level has departed from the normal position, and can know the direction that liquid level departs from, thereby can regulate liquid level by control module, make liquid level recover the normal position.Therefore, the technical scheme that provides of the embodiment of the invention can accurately control to liquid level in several millimeters the scope.
Be the example explanation that makes an explanation with two magnetic reed switchs below.Referring to Fig. 2, preferably, detecting unit 11 comprises: ball lever 21 is arranged on magnetic reed switch 22 and magnetic reed switch 23 on this ball lever 21, ball float 24, and the magnet 25 that comprised of this ball float 24.
Distance between magnetic reed switch 22 and the magnetic reed switch 23 is adjusted in the appropriate threshold scope in advance.When liquid level changed, ball float 24 moved along ball lever 21, for example from magnetic reed switch 23 to the process of the direction of magnetic reed switch 22 motion.Magnet 25 cause magnetic reed switch 23 conductings, and magnetic reed switch 22 is in off-state at first near magnetic reed switch 23.Magnet 25 continues to move along former direction, and when magnet 25 was in correct position between magnetic reed switch 23 and the magnetic reed switch 22, also conducting of magnetic reed switch 22 was in the state of conducting together with magnetic reed switch 23.Magnet 25 continues the fortune merit along former direction, and magnetic reed switch 23 disconnects, but magnetic reed switch 22 still is in conducting state.
In like manner, the state of two adjacent magnetic reed switchs all can be in one of following three kinds of states arbitrarily:
State magnetic reed switch conducting in: the first, second magnetic reed switch disconnects;
The conducting simultaneously of two: the first magnetic reed switchs of state and second magnetic reed switch;
Three: the first magnetic red cut-off switch of state, the second magnetic reed switch conducting.
So, thus processing unit 12 can be determined liquid level information according to the on off state on the ball lever.Preferably, described liquid level information comprises liquid level position and liquid level variation direction, and described processing unit 12 comprises:
Liquid level position unit 122 is used for searching described storage unit 121 according to the on off state on the ball lever, when having only a switch conduction, searches the pairing liquid level position of this switch, thereby determines the position of current liquid level; When the conducting simultaneously of adjacent two switches, pairing liquid level position when searching this this two switch conductings simultaneously, thus determine the position of current liquid level.
Pace of change unit 124 is used for the transformation period according to liquid level position and liquid level position, determines liquid level change speed.
Described control module 13, the pace of change control liquid level of the liquid level that liquid level variation direction of determining according to described direction unit 123 and described pace of change unit 124 are determined.
Provide specifically illustrating of liquid level control below.
Referring to Fig. 3, a kind of fluid level control device that the liquid level detection device that adopts the embodiment of the invention to provide is realized comprises: ball lever 31 is arranged on magnetic reed switch 32 and magnetic reed switch 33 on this ball lever 31, ball float 34, and the magnet 35 that comprised of this ball float 34, the pump 30 of scalable fluid flow.
A flow of liquid inlet 38 and liquid flowing outlet 39 are arranged in the container 36.Suppose the current flow that needs controlling liquid to flow into, then pump 30 flow of liquid that is arranged on container 36 38 places that enter the mouth; And the current maintenance container 36 interior liquid levels that need remain on an accurate liquid level 37, and promptly liquid level 37 is normal fluid level condition.
When liquid level was in liquid level 37, the position of magnet 35 made 33 conductings simultaneously of magnetic reed switch 32 and magnetic reed switch.If after after a while, magnetic reed switch 32 disconnects and still conducting of magnetic reed switch 33, and then the liquid influx of flow of liquid inlet 38 needs to increase the flow of pump 30 less than the liquid outflow amount of liquid flowing outlet 39.If after after a while, magnetic reed switch 33 disconnects and still conducting of magnetic reed switch 32, and then the liquid influx of flow of liquid inlet 38 need reduce the flow of pump 30 greater than the liquid outflow amount of liquid flowing outlet 39.
Can adopt simple switching value control to the flow control of pump 30 in the whole device shown in Figure 3, also can gather magnetic reed switch 22 and magnetic reed switch 23 and be conducting to the time that a magnetic reed switch disconnects simultaneously, by definite liquid level change speed of this time, thereby carry out proportion integration differentiation control (PID) according to liquid level change speed.Therefore, concrete control mode is more flexible, can be decided according to the actual requirements.
In like manner, also pump 30 can be arranged on liquid flowing outlet 39, be used for the discharge of controlling liquid, thereby also can reach the purpose of liquid level control.
Introduce the method that the embodiment of the invention provides below.
A kind of liquid-level detecting method that the embodiment of the invention provides, at least two switches of setting on ball lever, and the distance between two adjacent arbitrarily switches in advance are arranged in certain threshold range, and referring to Fig. 4, described method comprises:
S401, when liquid level change, ball float moves along the described ball lever that sets in advance, and the on off state of controlling on this ball lever is: have only a switch conduction, the conductings simultaneously of perhaps adjacent two switches.
S402, according to the on off state on this ball lever, determine liquid level information.
Further, according to liquid level information Control liquid level.
In sum, the embodiment of the invention by set in advance between adjacent two magnetic reed switchs on the ball lever distance within the specific limits, thereby make the variation of ball float along with liquid level, in the process that moves along ball lever, the magnetic reed switch state on the control ball lever is: have only a magnetic reed switch conducting or adjacent two magnetic reed switchs conducting simultaneously.Thereby avoid occurring all magnetic reed switchs and all disconnect the problem that can't detect and control liquid level that is caused.Make the degree of accuracy of Detection ﹠ Controling of liquid level significantly improve, and the apparatus structure of realizing the technical scheme that the embodiment of the invention provides is simple, volume is small and exquisite, low price, dependable performance, thus described level gauging of the embodiment of the invention and control technology be a kind of degree of accuracy height, convenient and swift, be easy to realize, lower-cost level gauging and control technology.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1, a kind of liquid level detection device is characterized in that, described device comprises: ball float, ball lever and processing unit;
Described ball float is used for the variation along with liquid level, moves the conducting and the disconnection of the switch in moving process on the described ball lever of control along described ball lever;
Described ball lever, be used to described ball float that moving track is provided, and be provided with at least two switches, the distance between two adjacent arbitrarily switches is arranged in certain threshold range, so that the control of described ball float has only a switch conduction or adjacent two switches conducting simultaneously;
Described processing unit is used for determining liquid level information according to the on off state on the described ball lever.
2, device according to claim 1 is characterized in that, described liquid level information comprises liquid level position and liquid level variation direction, and described processing unit comprises:
Storage unit is used for storing in advance when having only a switch conduction on the described ball lever, the pairing liquid level position of this switch, and pairing liquid level position during the conducting simultaneously of arbitrarily adjacent two switches on the described ball lever;
The liquid level position unit is used for searching described storage unit according to the on off state on the described ball lever, determines liquid level position;
The direction unit is used for the variation according to liquid level position in a period of time, determines the liquid level variation direction.
3, device according to claim 1 and 2 is characterized in that, described ball float is the ball float that contains magnet, and described switch is a magnetic reed switch;
Described ball float is controlled magnetic reed switch state on the described ball lever by the magnet of self in moving process.
4, a kind of fluid level control device is characterized in that, this device comprises: ball float, ball lever, processing unit and control module;
Described ball float is used for the variation along with liquid level, moves the conducting and the disconnection of the switch in moving process on the described ball lever of control along described ball lever;
Described ball lever, be used to described ball float that moving track is provided, and be provided with at least two switches, the distance between two adjacent arbitrarily switches is arranged in certain threshold range, so that the control of described ball float has only a switch conduction or adjacent two switches conducting simultaneously;
Described processing unit is used for determining liquid level information according to the on off state on the described ball lever;
Described control module is used for according to described liquid level information Control liquid level.
5, device according to claim 4 is characterized in that, described liquid level information comprises liquid level position and liquid level variation direction, and described processing unit comprises:
Storage unit is used for storing in advance when having only a switch conduction on the described ball lever, the pairing liquid level position of this switch, and pairing liquid level position during the conducting simultaneously of arbitrarily adjacent two switches on the described ball lever;
The liquid level position unit is used for searching described storage unit according to the on off state on the described ball lever, determines liquid level position;
The direction unit is used for the variation according to liquid level position in a period of time, determines the liquid level variation direction.
6, device according to claim 5 is characterized in that, described processing unit also comprises:
The pace of change unit is used for the transformation period according to liquid level position and liquid level position, determines liquid level change speed.
7, device according to claim 6 is characterized in that, described control module is according to the pace of change control liquid level of described liquid level variation direction and described liquid level.
According to the described device of the arbitrary claim of claim 4 to 7, it is characterized in that 8, described ball float is the ball float that contains magnet, described switch is a magnetic reed switch;
Described ball float is controlled magnetic reed switch state on the described ball lever by the magnet of self in moving process.
9, a kind of liquid-level detecting method is characterized in that, at least two switches of setting on ball lever, and the distance between two adjacent arbitrarily switches in advance are arranged in certain threshold range, and described method comprises:
When liquid level change, ball float moves along described ball lever, and the on off state of controlling on the described ball lever is: have only a switch conduction, perhaps adjacent two switches conducting simultaneously;
According to the on off state on the described ball lever, determine liquid level information.
10, a kind of liquid level controlling method is characterized in that, at least two switches of setting on ball lever, and the distance between two adjacent arbitrarily switches in advance are arranged in certain threshold range, and described method comprises:
When liquid level change, ball float moves along described ball lever, and the on off state of controlling on the described ball lever is: have only a switch conduction, perhaps adjacent two switches conducting simultaneously;
According to the on off state on the described ball lever, determine liquid level information, according to described liquid level information Control liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102225095A CN101413820A (en) | 2008-09-18 | 2008-09-18 | Method and apparatus for detecting and controlling liquid level by float ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102225095A CN101413820A (en) | 2008-09-18 | 2008-09-18 | Method and apparatus for detecting and controlling liquid level by float ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101413820A true CN101413820A (en) | 2009-04-22 |
Family
ID=40594461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102225095A Pending CN101413820A (en) | 2008-09-18 | 2008-09-18 | Method and apparatus for detecting and controlling liquid level by float ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101413820A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296795A (en) * | 2014-10-31 | 2015-01-21 | 湖南农业大学 | Automatic sensor detection control device and method |
| CN105486386A (en) * | 2016-01-04 | 2016-04-13 | 广东美的暖通设备有限公司 | Liquid level detection device and method and multi-split air conditioner |
| CN105486382A (en) * | 2015-12-31 | 2016-04-13 | 河北珠峰仪器仪表设备有限公司 | Magnetostrictive liquid level measuring device with liquid level hard warning and detecting functions |
| CN105856850A (en) * | 2016-03-30 | 2016-08-17 | 深圳华云数码有限公司 | Ink liquid level state monitoring device and method |
| CN107727199A (en) * | 2017-11-03 | 2018-02-23 | 行愿环保科技有限公司 | Waste liquid liquid level detection system and detection method with fault self-checking function |
| CN108168629A (en) * | 2017-12-08 | 2018-06-15 | 北京农业智能装备技术研究中心 | A kind of monitoring device of liquid fertilization pipeline, system and method |
| CN110044445A (en) * | 2019-06-04 | 2019-07-23 | 深圳市协润科技有限公司 | A kind of water level monitoring method |
| CN110858357A (en) * | 2018-08-24 | 2020-03-03 | 上海朴道水汇环保科技股份有限公司 | Water purifier charging method and system based on floater liquid level switch and terminal |
| CN111660695A (en) * | 2019-03-08 | 2020-09-15 | 天津大学 | Novel pen capable of displaying ink quantity |
-
2008
- 2008-09-18 CN CNA2008102225095A patent/CN101413820A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296795A (en) * | 2014-10-31 | 2015-01-21 | 湖南农业大学 | Automatic sensor detection control device and method |
| CN105486382A (en) * | 2015-12-31 | 2016-04-13 | 河北珠峰仪器仪表设备有限公司 | Magnetostrictive liquid level measuring device with liquid level hard warning and detecting functions |
| CN105486386A (en) * | 2016-01-04 | 2016-04-13 | 广东美的暖通设备有限公司 | Liquid level detection device and method and multi-split air conditioner |
| CN105856850A (en) * | 2016-03-30 | 2016-08-17 | 深圳华云数码有限公司 | Ink liquid level state monitoring device and method |
| CN107727199A (en) * | 2017-11-03 | 2018-02-23 | 行愿环保科技有限公司 | Waste liquid liquid level detection system and detection method with fault self-checking function |
| CN108168629A (en) * | 2017-12-08 | 2018-06-15 | 北京农业智能装备技术研究中心 | A kind of monitoring device of liquid fertilization pipeline, system and method |
| CN110858357A (en) * | 2018-08-24 | 2020-03-03 | 上海朴道水汇环保科技股份有限公司 | Water purifier charging method and system based on floater liquid level switch and terminal |
| CN111660695A (en) * | 2019-03-08 | 2020-09-15 | 天津大学 | Novel pen capable of displaying ink quantity |
| CN110044445A (en) * | 2019-06-04 | 2019-07-23 | 深圳市协润科技有限公司 | A kind of water level monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101413820A (en) | Method and apparatus for detecting and controlling liquid level by float ball | |
| CN201285310Y (en) | Circuit structure used for water level transducer | |
| CA2842790C (en) | Velocity sensor for a plunger lift system | |
| CN102121844B (en) | Non-contact liquid level meter based on giant magneto-resistance sensors | |
| CN103453966A (en) | Infrared distance measuring liquid level gauge and application thereof to non-water-washing toilet device | |
| CN110377063A (en) | Simple liquid-level auto-control device | |
| CN203672428U (en) | Dam seepage flow instrument | |
| CN207397110U (en) | Liquid-level auto-control device | |
| CN203561406U (en) | Infrared distance measuring liquid level gauge and non-water-washing toilet device utilizing same | |
| CN103713658B (en) | Casting and rolling machine aluminum liquid liquid level analog control system | |
| CN204007801U (en) | A kind of anti-fluctuation magnetic fluid level gauge | |
| CN208458836U (en) | A kind of liquid level detection system and liquid supply or recovery system | |
| CN205607493U (en) | Be provided with liquid monitoring device's movable liquid case | |
| CN201218744Y (en) | Non-contact type water level transducer | |
| CN110736503A (en) | continuous gas measuring device | |
| CN208350176U (en) | A kind of link-type floating ball lever meter | |
| CN102109373A (en) | Floating ball type liquid level sensor | |
| CN102998359A (en) | Differential pressure type crude oil water cut analyzer and measuring method thereof | |
| CN109932023A (en) | A kind of single switch two point form liquidometer | |
| CN211619929U (en) | Go out wine detecting system | |
| CN201535557U (en) | Touch type humidifier water level control switch | |
| CN201731922U (en) | Drifting type sewage metering device | |
| CN101793541B (en) | Water level detector of water heater | |
| CN217786268U (en) | Detection system for improving flow measurement precision of oil system | |
| CN215338509U (en) | Magnetic induction type liquid level sensor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090422 |