CN205209424U - Linear valve displacement detection device of non -contact - Google Patents
Linear valve displacement detection device of non -contact Download PDFInfo
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- CN205209424U CN205209424U CN201520947901.1U CN201520947901U CN205209424U CN 205209424 U CN205209424 U CN 205209424U CN 201520947901 U CN201520947901 U CN 201520947901U CN 205209424 U CN205209424 U CN 205209424U
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- hall element
- linear valve
- valve displacement
- contact
- magnetic
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- Testing Or Calibration Of Command Recording Devices (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model discloses a linear valve displacement detection device of non -contact, including the hall element of welding on the circuit board, the magnetic stripe that links to each other with the valve, transfer magnetism hall element's magnetizer. The utility model discloses electric actuator's linear valve displacement detection device of non -contact adopt the magnetoelectric induction technology non -contact's position gather, having overcome potentiometre or other analogue measurement components, to detect the position output process of executor complicated, speed is low, the poor problem of precision is controlled portably, realizes the low -power consumption simultaneously.
Description
Technical field
The utility model design a kind of contactless linear valve displacement detector, especially a kind of for electric actuator and can realize real-time valve gather noncontact displacement monitor.
Background technology
Electric actuator is as technological process and the theory of control execution link in systems in practice, and its reliability decides safety and the benefit of industrial process.Electric actuator is due to the lifting of universal, self explosion-proof capabilities of electric power networks, especially accessible site control, diagnosis, Presentation Function are in one, be an important topworks in industrial automation system, be widely used in the fields such as oil, chemical industry, water power, boats and ships, metallurgy, the energy, light textile, food, medicine, urban water supply and sewerage.Electric actuator is a kind of important Detection & Controling equipment realizing economize energy, protection of the environment, recycling economy.Pneumatic actuator can simply realize quick linear circulating motion, and structure is simple, and it is convenient to safeguard, can use, if any the operating mode of requirement of explosion proof, many dust or humidity in various harsh environments simultaneously.And the valve displacement detection of pneumatic actuator is a key link, because the whether accurate of displacement detecting directly has influence on production run, product quality and energy-saving consumption-reducing.
At present, the displacement detector of electric actuator generally adopts, and one is adopt the position of potentiometer or other analogue measurement element testing actuators to export, and by obtaining the position feed back signal of potentiometer after AD conversion, process is complicated, and speed is low, low precision; Two is adopt photoelectric figure technology, adopts sending out that and being of system power supply, once system power failure just cannot realize the station acquisition after power down, and photoelectric type position harvester is higher to operating environment requirements, is subject to the problems affect such as dust; Three is the control modes adopting standby power supply, but displacement acquisition device power consumption is large, and often row changes standby power supply, increases after sale and cost of serving.
Summary of the invention
The utility model provides a kind of simple to operate, linear valve displacement detector low in energy consumption, and the device of energy Real-Time Monitoring valve displacement.
A kind of contactless linear valve displacement detector, is characterized in that, comprising:
Be welded on the Hall element (5) on wiring board (4);
The magnetic stripe (1) be connected with valve;
Magnetic is passed to the magnetic conductor (2) of Hall element.
Described Hall element sensor (5) is Hall switch magnetic induction sensor, can the change of induced field, and output digit signals.
Described magnetic stripe is laterally uniformly distributed by multiple magnet (11) and forms, and can be known the position of valve event, and one is directly connected by the size in magnetic field with valve universal driving shaft.
Because magnetic conductor (2) is positioned between magnetic field generation part (magnetic stripe (11)) and Hall element (5), therefore require that magnetic conductor can detect magnetic field.Profile is just as " n " type, and upper end contacts with Hall element (5), and lower end contacts with magnetic stripe (1).
The utility model adopt Hall element sensor (5) has magnetic-field-sensitive, structure is simple, volume is little, frequency response is wide, output voltage change greatly with the advantage such as long service life, adopt Hall element sensor can overcome photoelectric sensor and be subject to dust impact, the defect higher to application environmental requirement.
The utility model contactless linear valve displacement detector adopts magneto-electric induction technology to achieve contactless displacement acquisition, and the position output procedure overcoming potentiometer or other analogue measurement element testing implementation periods is complicated, and speed is low, the problem of low precision; The position output procedure also overcoming potentiometer or other analogue measurement elements monitoring actuator is complicated, and speed is low, the problem of low precision; Also overcome Traditional photovoltaic formula non-contacting position harvester and cannot continue collection position information after system power failure, cannot real-time be realized.
Accompanying drawing explanation
Fig. 1 is a kind of magnetic stripe structure figure grown in contactless linear valve displacement detector of the utility model.
Fig. 2 is a kind of magnetizer structure figure grown in contactless linear valve displacement detector of the utility model.
Fig. 3 is a kind of structural drawing growing contactless linear valve displacement detector of the utility model.
In figure:
1: magnetic stripe 11: magnet 2: magnetic conductor 3: circuit board
4: circuit board 5: Hall element
Embodiment
See accompanying drawing, a kind of contactless linear valve displacement detector of the utility model comprises Hall element (5), magnetic stripe (1) and magnetic magnetic conductor (2) three part composition.
As shown in Figure 1, the wider side of magnetic stripe (1) is laterally uniformly distributed by multiple circular small magnet (11), and the narrower side of magnetic stripe (1) has two small sircle holes, utilizes two circular holes that magnetic stripe is connected with valve universal driving shaft.
As shown in Figure 2, magnetic conductor (2) is made up of the aluminium flake of two " L " types, and it is fixed in a specific plastic casing, and a side and Hall element (5) are responded to, and the other end and magnetic stripe (1) are responded to.
As shown in Figure 3, the one-piece construction of contactless linear valve displacement detector can be learnt.
Hall element (5) is positioned on circuit board (4), uses contact pin to be fixed on circuit board (3) by circuit board (4).
Signal processing circuit is integrated on circuit board (3), and the circuit board (4) with Hall element (5) is fixed on circuit board (3) by contact pin, makes to produce gap between the two simultaneously, makes Hall element (5) form the magnetic field of constant intensity.
Principle of work of the present utility model: when valve rotates, universal driving shaft can drive magnetic stripe (1) to move up and down together, magnetic stripe (1) there is the place of magnet (11) can magnetic field be produced, magnetic conductor (2) senses magnetic field, magnetic field is sent to Hall element (5), thus make the pulse signal of Hall element (5) generation rule, and be sent to signal processing circuit (in not drawing).Signal processing circuit (in not drawing), by this pulse signal of process, judges position and the direction of valve.Carry out displacement detecting during manual operation after the control circuit of power supply achieves system power failure, ensure the real-time of displacement information.
Governor circuit in signal processing circuit (in not drawing) is made up of the single-chip microcomputer of signal MSP430F20120, Hall element (5).Input end P1.0, P1.1 button of the output terminal access single-chip microcomputer of Hall element (5), single-chip microcomputer is communicated by the main control CPU of spi bus mode with electric actuator master control borad.
In power control circuit (in not drawing), without the need to setting up electrical source exchange control knob, application MOSFET field effect transistor (being equivalent to change-over switch) realizes the automatic switchover of Power supply and system power supply.When system power supply field effect transistor by, displacement monitoring control circuit (in not drawing) by SYS-POW-OUT energize portions, namely by system power supply; During system power failure, field effect transistor connects 3.6V battery, is powered by battery; The power consumption of Hall element is very large, the grid of application MOSFET field effect transistor (being equivalent to output control switch) is connected with the P2.0 mouth EN-HELL of single-chip microcomputer MSP430F20120, by software, scan-type power supply control is realized to Hall element, the overall power of reduction system, makes that displacement detector is low in energy consumption puts a few mA.The diode of rectification can also be set in power control circuit as required, and for testing or the element such as resistance of dividing potential drop.
Claims (4)
1. a contactless linear valve displacement detector, is characterized in that, comprising:
Be welded on the Hall element (5) on wiring board (4);
The magnetic stripe (1) be connected with valve;
Magnetic is passed to the magnetic conductor (2) of Hall element.
2. contactless linear valve displacement detector as claimed in claim 1, is characterized in that, described Hall element sensor (5) is Hall switch magnetic induction sensor.
3. contactless linear valve displacement detector as claimed in claim 1, is characterized in that, described magnetic stripe (1) is laterally uniformly distributed by multiple magnet (11) and forms, and one is directly connected with valve universal driving shaft.
4. contactless linear valve displacement detector as claimed in claim 1, is characterized in that, described magnetic conductor (2) profile is just as " n " type, and upper end contacts with Hall element (5), and lower end contacts with magnetic stripe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520947901.1U CN205209424U (en) | 2015-11-24 | 2015-11-24 | Linear valve displacement detection device of non -contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520947901.1U CN205209424U (en) | 2015-11-24 | 2015-11-24 | Linear valve displacement detection device of non -contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209424U true CN205209424U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520947901.1U Active CN205209424U (en) | 2015-11-24 | 2015-11-24 | Linear valve displacement detection device of non -contact |
Country Status (1)
| Country | Link |
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| CN (1) | CN205209424U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441064A (en) * | 2016-11-02 | 2017-02-22 | 广东百合医疗科技股份有限公司 | Method for measuring displacement through magnetic gap and equipment thereof |
| CN106782962A (en) * | 2017-01-11 | 2017-05-31 | 上海思博机械电气有限公司 | A kind of straight-line displacement potentiometer |
-
2015
- 2015-11-24 CN CN201520947901.1U patent/CN205209424U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441064A (en) * | 2016-11-02 | 2017-02-22 | 广东百合医疗科技股份有限公司 | Method for measuring displacement through magnetic gap and equipment thereof |
| CN106441064B (en) * | 2016-11-02 | 2020-01-31 | 广东百合医疗科技股份有限公司 | method and equipment for measuring displacement by magnetic seam |
| CN106782962A (en) * | 2017-01-11 | 2017-05-31 | 上海思博机械电气有限公司 | A kind of straight-line displacement potentiometer |
| CN106782962B (en) * | 2017-01-11 | 2023-04-28 | 上海思博机械电气有限公司 | Linear displacement potentiometer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |