CN102235904A - Digital calibration liquid level sensing device - Google Patents
Digital calibration liquid level sensing device Download PDFInfo
- Publication number
- CN102235904A CN102235904A CN 201010157371 CN201010157371A CN102235904A CN 102235904 A CN102235904 A CN 102235904A CN 201010157371 CN201010157371 CN 201010157371 CN 201010157371 A CN201010157371 A CN 201010157371A CN 102235904 A CN102235904 A CN 102235904A
- Authority
- CN
- China
- Prior art keywords
- rocking bar
- digital calibration
- liquid level
- sensor body
- sensing device
- 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
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The invention relates to a digital calibration liquid level sensing device, comprising a sensor body arranged outside a container. The digital calibration liquid level sensing device is characterized in that a positioning clamping hook is arranged in the container and a measuring rocking bar is rotatably connected to the positioning clamping hook; the measuring rocking bar is divided into a long end and a short end; a bending included angle is formed between the long end and the short end; meanwhile, the long end is provided with a floater; and the short end is provided with a marked component. Thus, magnet and the floater on two ends are cooperated by the measuring rocking bar at certain angle to simplify the marking process. In addition, measurement is carried out by adopting the variation of the magnetic field, the conductive medium contacting with the liquid does not exist, complete electrical isolation can be realized, and potential safety hazard is eliminated.
Description
Technical field
The present invention relates to a kind of sensor, relate in particular to a kind of digital calibration solution sensing equipment.
Background technology
Widely used liquid level sensor roughly is divided into two kinds, resistance-type level transducer and capacitance level transducer on the home market at present.Resistance-type level transducer adopts the variation of measuring resistance to measure the height of liquid level.It is that one section resistance wire is put into liquid, one of arm rocking bar is connected with resistance wire as the contact, load onto ball float for other one, when ball float when on liquid level, moving up and down under the buoyancy, the contact contacts at diverse location with resistance wire, and the variation of the resistance value by detecting one of contact and resistance wire comes the height of measuring liquid level then.Capacitance level transducer adopt to be measured the height that changes in capacitance is measured liquid level.It is that a metal bar inserts in the liquid container, and metal bar is as a utmost point of electric capacity, and chamber wall is as another utmost point of electric capacity.Two interelectrode media are liquid and top gas thereof.Because the specific inductive capacity of liquid is different with the specific inductive capacity on the liquid level, then when liquid level change, dielectric constant values total between two electrodes changes thereupon, thereby electric capacitance change.So, can come the height of measuring liquid level by the variation that detects two interelectrode electric capacitys.
This shows,, all need conducting medium and insert in the liquid, and in order to increase accuracy of detection, conducting medium must be higher than liquid level variation height no matter be resistance-type level transducer or capacitance level transducer.Because the occasion that this class sensor uses is very many, and the container of its carrying liquid also has nothing in common with each other, so the length of the conducting medium of using also has nothing in common with each other, thereby make this type of sensor all need the process of a demarcation, with the resistance value of noting the different length conducting medium or the variation range of capacitance, and then come result of calculation according to different value.In case the data of record have a point tolerance, will cause the detected data of this liquid level sensor inaccurate.In addition on the one hand, no matter be resistance-type level transducer or capacitance level transducer, all need conducting medium and contact with liquid.In case yet that waterproofing protection is done is bad, liquid is easy to the open circuit potential plate, causes working sensor undesired.More seriously, this class liquid level sensor is widely used in fuel oil or the liquefied gas, and the fault in case circuit is short-circuited produces Mars, and consequence is with hardly imaginable.
Summary of the invention
The objective of the invention is to overcome the above problem that prior art exists, a kind of digital calibration solution sensing equipment is provided.
For realizing a kind of digital calibration solution sensing equipment of purpose of the present invention, include sensor body, described sensor body is arranged on external container, and wherein: described internal tank is provided with the location grab, is rotatably connected to the measurement rocking bar on the grab of location; Described measurement rocking bar is divided into long end and short end; Be provided with the bending angle between described long end and the short end; Described long end is provided with float, and described short end is provided with the sign parts.
Further, above-mentioned a kind of digital calibration solution sensing equipment, wherein, the bending angle of described measurement rocking bar is provided with bayonet socket, and bayonet socket is axle with the location grab and is rotationally connected.
Further, above-mentioned a kind of digital calibration solution sensing equipment, wherein, described sign parts are magnet.
Again further, above-mentioned a kind of digital calibration solution sensing equipment, wherein, described sensor body is provided with lead, and lead is provided with connector.
Adopt technical solution of the present invention, cooperate the magnet and the float at two ends, can simplify the process of demarcation by the certain measurement rocking bar of angle, guarantee to detect accurately.What is more important adopts the variation in magnetic field to measure, and does not have the conducting medium that contacts with liquid, can not have the corrosion of liquid to circuit board in this digital calibration solution sensing equipment.And, can realize complete electrical isolation, eliminate safe hidden trouble.
Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
When Fig. 1 is the liquid trunkful, the position view of float and magnet;
When Fig. 2 is the liquid empty van, the position view of float and magnet.
The implication of each Reference numeral is as follows among the figure:
1 sensor body, 2 containers
3 location grabs 4 are measured rocking bar
5 floats, 6 magnet
7 connectors, 8 leads
Embodiment
A kind of digital calibration solution sensing equipment shown in Fig. 1～2, include sensor body 1, described sensor body 1 is arranged on container 2 outsides, and its special feature is: described container 2 inside are provided with location grab 3, change to be connected with at location grab 3 and measure rocking bar 4.Further, measure rocking bar 4 and be divided into long end and short end, described long end is provided with float 5, and described short end is provided with the sign parts.
In conjunction with the present invention's one preferred implementation, the bending angle of measuring rocking bar 4 is provided with bayonet socket, and bayonet socket is axle with location grab 3 and is rotationally connected.Like this, can be convenient to measure rocking bar 4 assembles fast with container 2 inner realizations.And, by bayonet socket and location cooperating between the grab 3, can not carry out lockedly to the position of measuring rocking bar 4, do not influence that to measure rocking bar 4 serve as spool to be rotated with location grab 3.
Simultaneously, can better know sign parts position for sensor body 1, improve the levels of precision of measuring, described sign parts are magnet 6.Certainly, consider the communication between sensor body 1 and other external device (ED)s, be provided with lead 8 on sensor body 1, lead 8 is provided with connector 7.Thus,, can realize the intercommunication of data, help expansion of the present invention by connector 7 being connected into outside part device PORT COM.
By practical application of the present invention:, therefore under buoyancy function, can allow float 5 drive to measure the rocking bars 4 serve as spool to be rotated with location grab 3 because float 5 is in liquid.That is to say that as shown in Figure 1, when the liquid trunkful in the container 2, float 5 is in a certain location respectively with magnet 6, promptly float 5 is positioned at a point position, and magnet 6 is positioned at c point position.When the liquid in the container 2 during near empty van, float 5 can descend gradually.Fix owing to measure the bending angle of rocking bar 4, therefore, float 5 and the magnet 6 of this moment can be in another certain location respectively.Specifically, as shown in Figure 2, float 5 sinks, and is positioned at b point position, and 6 of magnet are positioned at d point position.
Further, the process of magnet 6 from the c position to the d position, for the constant sensor of stationkeeping, the magnetic field intensity of generation is different.In other words, the process of magnet 6 from the c position to the d change in location, the magnetic field intensity that magnet 6 produces just in time can make the voltage signal of the linear variation of parts output in this sensor body 1.
Again further, because the individuality of container 2 there are differences, can cause measuring rocking bar 4 positions and have change.Therefore, change as long as the corresponding positions of parts in the sensor body 1 and magnet 6 is equipped with a bit, its magnetic field intensity will change, and causes output voltage values to change.Therefore need the process of a demarcation in use.Specifically, in the present invention when mounted, this sensor is connected with computing machine by lead 8, then float 5 is placed on the trunkful position, by computer command, records of values gets off at this moment.Afterwards, float 5 is placed on the empty van position, records of values gets off to get final product at this moment.This calibration process is fast and convenient.
By above-mentioned character express and in conjunction with the accompanying drawings as can be seen, adopt the present invention after, cooperate the magnet and the float at two ends by the certain measurement rocking bar of angle, can simplify the process of demarcation, guarantee to detect accurately.What is more important adopts the variation in magnetic field to measure, and does not have the conducting medium that contacts with liquid, can not have the corrosion of liquid to circuit board in this digital calibration solution sensing equipment.And, can realize complete electrical isolation, eliminate safe hidden trouble.
Certainly, more than only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (4)
1. a digital calibration solution sensing equipment includes sensor body, and described sensor body is arranged on external container, it is characterized in that: described internal tank is provided with the location grab, is rotatably connected to the measurement rocking bar on the grab of location; Described measurement rocking bar is divided into long end and short end; Be provided with the bending angle between described long end and the short end; Described long end is provided with float, and described short end is provided with the sign parts.
2. a kind of digital calibration solution sensing equipment according to claim 1, it is characterized in that: the bending angle of described measurement rocking bar is provided with bayonet socket, and bayonet socket is axle with the location grab and is rotationally connected.
3. a kind of digital calibration solution sensing equipment according to claim 1, it is characterized in that: described sign parts are magnet.
4. a kind of digital calibration solution sensing equipment according to claim 1, it is characterized in that: described sensor body is provided with lead, and lead is provided with connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157371 CN102235904A (en) | 2010-04-28 | 2010-04-28 | Digital calibration liquid level sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157371 CN102235904A (en) | 2010-04-28 | 2010-04-28 | Digital calibration liquid level sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102235904A true CN102235904A (en) | 2011-11-09 |
Family
ID=44886769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010157371 Pending CN102235904A (en) | 2010-04-28 | 2010-04-28 | Digital calibration liquid level sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235904A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459114A (en) * | 2017-09-06 | 2019-03-12 | 宁波方太厨具有限公司 | Float for water tank high-low-position detecting tool |
| CN110285836A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Inclination angle type hydrostatic level calibrating installation and calibration method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228530A (en) * | 1998-03-09 | 1999-09-15 | 王其明 | Continuous capacitance sensor |
| CN2622681Y (en) * | 2003-06-06 | 2004-06-30 | 金湖县红光仪表厂 | Self-calibration and capacitor type level gage |
| CN1811350A (en) * | 2006-02-24 | 2006-08-02 | 武汉理工大学 | Liquid level sensor |
| CN201707108U (en) * | 2010-04-28 | 2011-01-12 | 苏州工业园区易辰电子系统有限公司 | Digital scaling liquid level sensing device |
-
2010
- 2010-04-28 CN CN 201010157371 patent/CN102235904A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228530A (en) * | 1998-03-09 | 1999-09-15 | 王其明 | Continuous capacitance sensor |
| CN2622681Y (en) * | 2003-06-06 | 2004-06-30 | 金湖县红光仪表厂 | Self-calibration and capacitor type level gage |
| CN1811350A (en) * | 2006-02-24 | 2006-08-02 | 武汉理工大学 | Liquid level sensor |
| CN201707108U (en) * | 2010-04-28 | 2011-01-12 | 苏州工业园区易辰电子系统有限公司 | Digital scaling liquid level sensing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459114A (en) * | 2017-09-06 | 2019-03-12 | 宁波方太厨具有限公司 | Float for water tank high-low-position detecting tool |
| CN110285836A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Inclination angle type hydrostatic level calibrating installation and calibration method |
| CN110285836B (en) * | 2019-07-22 | 2023-11-03 | 湖南省计量检测研究院 | Inclination angle type hydrostatic level calibrating device and calibrating method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5527851B2 (en) | Liquid level detection device and detection method thereof | |
| CN101261148B (en) | Pressure type digital material-level sensor and its measurement method | |
| CN101266167A (en) | Capacitance type digital material-level sensor and its measurement method | |
| CN105247326A (en) | Method for monitoring at least one medium-specific property of a medium for a fill level measurement | |
| CN202974385U (en) | Capacitance liquid level transmitter | |
| US11199434B2 (en) | Dual polarity mutual capacitive liquid sensing | |
| CN103675460A (en) | Measurement device of capacitive coupling type non-contact conductance based on phase-sensitive demodulation and method thereof | |
| CN108871498A (en) | Condenser type adaptive universal liquid level emasuring device and method | |
| CN102980630A (en) | Intelligent digital capacitive liquid level sensor | |
| CN102235904A (en) | Digital calibration liquid level sensing device | |
| CN201707108U (en) | Digital scaling liquid level sensing device | |
| CN201438127U (en) | Precise liquid level sensor | |
| CN202229817U (en) | Liquid level meter with magnetic floater | |
| CN103913207A (en) | High-precision variable-scan oil level measurement sensor with matrix capacitor | |
| CN208847287U (en) | Condenser type adaptive universal liquid level emasuring device | |
| CN101393461A (en) | Radio frequency admittance admittance level controller | |
| CN115993166A (en) | Bipolar plate self-adaptive capacitive liquid level sensing system | |
| CN109870214A (en) | Water detection structure and household appliance | |
| CN201780139U (en) | Intelligent level measuring device | |
| CN103868567A (en) | Capacitance liquid level transmitter | |
| CN203455049U (en) | Liquid level detection device for chemical storage tank | |
| CN203893916U (en) | Fuel level sensor with movable parallel pole plate and fixed parallel pole plate | |
| CN202994244U (en) | Intelligent digital capacitance liquid level sensor | |
| CN201707099U (en) | Digital liquid level sensor | |
| CN102401676A (en) | Measurement converting 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |