CN206283482U - A kind of contact proximity switch based on Hall sensor - Google Patents
A kind of contact proximity switch based on Hall sensor Download PDFInfo
- Publication number
- CN206283482U CN206283482U CN201621391704.7U CN201621391704U CN206283482U CN 206283482 U CN206283482 U CN 206283482U CN 201621391704 U CN201621391704 U CN 201621391704U CN 206283482 U CN206283482 U CN 206283482U
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- housing
- hall sensor
- contact
- contact rod
- proximity switch
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Abstract
The purpose of this utility model is aimed at the problem that existing contact proximity switch is present, there is provided a kind of contact proximity switch based on Hall sensor, belongs to sensor technical field.The contact proximity switch, including housing, contact rod, Hall sensor and magnetic patch；Wherein, contact rod passes through housing, and one section is located at outside housing, and remaining one section is located in housing；Contact rod with housing for free-standing is connected, contact rod can doing axial wobble with housing intersection, and contact rod it is static when it is vertical with housing；Magnetic patch is arranged on the end of contact rod in housing；Hall sensor is located in housing, and the wire for having connection passes housing.The device can accurately detect locomotive position, and inner member without directly contact, it is not easy to wear and tear, and will not also be subject to the influences such as internal wetted corrosion, so more safe and reliable, sensitivity is higher, and reaction is more accurate, while switch service life can be improved.
Description
Technical field
The utility model belongs to sensor technical field, more particularly to a kind of contact based on Hall sensor is approached and opened
Close.
Background technology
With the fast development of modern electronic technology, various kinds of sensors not only industrial automation application increasingly
Extensively, auto industry, consumer electronic industry, Homeland Security, health care and national defense industry etc. field are no exception.For ore deposit
Mountain down-hole power locomotive, can accurately detect that locomotive position is all particularly important for production, transport, current underground locomotive position inspection
Device is surveyed, detection locomotive simple and reliable sensor in place generally uses contact proximity switch, and this sensor works as locomotive
The positional information of locomotive can be effectively detected when being close to certain limit.But contact proximity switch is due to the characteristic of itself,
Need to contact external contact rod, switch closure is detected, it is necessary to switch long-term lasting on-off, internal machine
Easily abrasion is even damaged tool structure, simultaneously because external contact rod is mobilizable, internal wetted is easily caused in closure
Or progressively corrode, influence service life there is also potential safety hazard.Therefore a kind of new detection locomotive sensor dress in place is studied
Put and seem particularly necessary.
Now, the sensor with information detection and translation function has turned into indispensable portion in electronic information field
Point.In numerous sensors, the Hall sensor with detection of magnetic field function plays vital role, at the same time,
To the research of hall sensing correlation technique still in continuing, hall sensing technology is to have boundless prospects to people.
Utility model content
The purpose of this utility model is aimed at the problem that existing contact proximity switch is present, there is provided one kind is based on
The contact proximity switch of Hall sensor.
A kind of contact proximity switch based on Hall sensor, including housing, contact rod, Hall sensor and magnetic patch；
Wherein, the contact rod passes through housing, and one section is located at outside housing, and remaining one section is located in housing；Contact rod and shell
Body is free-standing connection, contact rod can doing axial wobble with housing intersection, and contact rod it is static when hung down with housing
Directly；
The magnetic patch is arranged on the end of contact rod in housing；
The Hall sensor is located in housing, and the wire for having connection passes housing；
Preferably, the magnetic patch is not contacted with Hall sensor；
Preferably, the magnetic patch is vertically opposite with Hall sensor, and the stronger magnetic pole of sensing of magnetic patch is towards Hall sensor
Inductive probe, contact rod swing when to away from Hall sensor direction swing；
Preferably, the magnetic patch is magnetic material, preferably magnet or magnet steel.
Compared with prior art, the utility model has the advantages that：
Control the folding of circuit inside proximity switch of the present utility model by electromagnetic induction by Hall sensor and magnetic patch,
The magnetic induction intensity signal that Hall sensor and magnetic patch transmission can be passed through accurately detects locomotive position, and output one is conveniently known
Other voltage signal, and inner member is without directly contact, it is not easy to wear and tear, will not also be subject to the influences such as internal wetted corrosion,
So more safe and reliable, sensitivity is higher, and reaction is more accurate, while switch service life can be improved.
Brief description of the drawings
Proximity switch recognizes the operation principle sketch of locomotive position in Fig. 1, embodiment 1.
Proximity switch structural representation in Fig. 2, embodiment 1.
In figure, 1, contact proximity switch；2, pantograph；3, Hall sensor；4, magnetic patch；5, contact rod；6, housing.
Specific embodiment
A kind of contact proximity switch 1 based on Hall sensor, as shown in Fig. 2 including housing 6, contact rod 5, Hall
Sensor 3 and magnetic patch 4；
The contact rod 5 passes through housing 4, and one section is located at outside housing, and remaining one section is located in housing；Contact rod 5 and housing 4
For free-standing is connected, contact rod 5 can do axial wobble with the intersection of housing 6；
The magnetic patch 4 is arranged on the end of contact rod 5 in housing；
The Hall sensor 3 is located in housing, and the wire for having connection passes housing 6；By electricity inside Hall sensor 3
(OC) composition of output stage of pressure sensor, Hall voltage generator, difference amplifier, Schmidt trigger and open collector
Magneto-dependent sensor, its input is magnetic induction intensity, is output as a digital voltage signal；
Magnetic patch 4 is not contacted with Hall sensor 3, and magnetic patch 4 is vertically opposite with Hall sensor 3, the sensing of magnetic patch 4 compared with
Strong magnetic pole swings when contact rod 5 swings towards the inductive probe of Hall sensor 3 to the direction away from Hall sensor 3；
Magnetic patch 4 is magnet or magnet steel.
Operation principle sketch of the present utility model by contact proximity switch as shown in figure 1, be arranged on electric locomotive stringing
Top, and when electric locomotive reaches contact proximity switch contact rod position, electric locomotive pantograph can be with the row of locomotive
Enter to stir the contact rod of contact proximity switch, trigger switch is come with this.
The magnetic patch position of this contact proximity switch is vertically opposite with Hall sensor, should sense magnetic patch during installation stronger
Towards the inductive probe of Hall sensor, the detecting distance of Hall sensor is 10mm-20mm to magnetic pole, and output voltage 6V-36V is straight
Stream voltage；Usually during normality Hall sensor in sense state, i.e. normally off, now Schmidt trigger output electricity high
Put down (relative to ground), make triode ON, OC gate output terminals output low level；When electric locomotive reaches proximity switch position
When, the pantograph on electric locomotive top can touch the contact rod of contact proximity switch, and contact rod is struck and drives contact to connect
Nearly switch internal magnetic patch leaves the maximum detection range of Hall sensor away from Hall sensor, and sensing disconnects, now Schmidt
Trigger exports low level, and triode cut-off, OC gate output terminals output high level makes device pass through Hall sensor OC output
One voltage signal, specified location is had arrived at the signal before not triggering conversely, detecting locomotive.
Claims (4)
1. a kind of contact proximity switch based on Hall sensor, it is characterised in that including housing, contact rod, hall sensing
Device and magnetic patch；
Wherein, the contact rod passes through housing, and one section is located at outside housing, and remaining one section is located in housing；Contact rod is with housing
Free-standing is connected, contact rod can doing axial wobble with housing intersection, and contact rod it is static when it is vertical with housing；
The magnetic patch is arranged on the end of contact rod in housing；
The Hall sensor is located in housing, and the wire for having connection passes housing.
2. a kind of contact proximity switch based on Hall sensor according to claim 1, it is characterised in that the magnetic
Block is not contacted with Hall sensor.
3. a kind of contact proximity switch based on Hall sensor according to claim 1 and 2, it is characterised in that institute
State Hall sensor and be provided with inductive probe, magnetic patch is vertically opposite with Hall sensor, the stronger magnetic pole of sensing of magnetic patch is towards Hall
The inductive probe of sensor, swings when contact rod swings to the direction away from Hall sensor.
4. a kind of contact proximity switch based on Hall sensor according to claim 1, it is characterised in that the magnetic
Block is magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391704.7U CN206283482U (en) | 2016-12-16 | 2016-12-16 | A kind of contact proximity switch based on Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391704.7U CN206283482U (en) | 2016-12-16 | 2016-12-16 | A kind of contact proximity switch based on Hall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206283482U true CN206283482U (en) | 2017-06-27 |
Family
ID=59072743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621391704.7U Active CN206283482U (en) | 2016-12-16 | 2016-12-16 | A kind of contact proximity switch based on Hall sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206283482U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111798604A (en) * | 2019-03-21 | 2020-10-20 | 佳纶生技股份有限公司 | Card reading device and access control system |
| CN113867225A (en) * | 2021-10-18 | 2021-12-31 | 河南嘉晨智能控制股份有限公司 | Safety protection system of industrial vehicle authority controller |
-
2016
- 2016-12-16 CN CN201621391704.7U patent/CN206283482U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111798604A (en) * | 2019-03-21 | 2020-10-20 | 佳纶生技股份有限公司 | Card reading device and access control system |
| CN113867225A (en) * | 2021-10-18 | 2021-12-31 | 河南嘉晨智能控制股份有限公司 | Safety protection system of industrial vehicle authority controller |
| CN113867225B (en) * | 2021-10-18 | 2022-04-15 | 河南嘉晨智能控制股份有限公司 | Safety protection system of industrial vehicle authority controller |
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