CN203224208U - Hall linear small displacement sensor - Google Patents
Hall linear small displacement sensor Download PDFInfo
- Publication number
- CN203224208U CN203224208U CN 201320208683 CN201320208683U CN203224208U CN 203224208 U CN203224208 U CN 203224208U CN 201320208683 CN201320208683 CN 201320208683 CN 201320208683 U CN201320208683 U CN 201320208683U CN 203224208 U CN203224208 U CN 203224208U
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- housing
- slide block
- hall
- small displacement
- gauge head
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Abstract
The utility model discloses a Hall linear small displacement sensor and belongs to the sensor technology field. The Hall linear small displacement sensor comprises a housing and a soleplate. A bottom of the housing is connected to a soleplate; a plug interface is provided on one side of the housing; a circular hole is arranged on the top of the housing; a circuit board is arranged within the housing; the circuit board is connected to a contact pin of the plug interface through a lead; a Hall element is welded on the circuit board; a slide block and a test head are arranged within the housing; the slide block and the test head are integrated into one piece; the test head passes through the circular hole on the top of the housing and projects out of the housing; magnetic steel is arranged on a side opposite to the slide block and the Hall element; a gap is arranged between the magnetic steel and the Hall element; and a reset spring is arranged between the slide block and the soleplate. The Hall linear small displacement sensor is characterized in that the structure is reasonable and simple, that the reset spring is arranged between the slide block and the sole plate to enable the test head and the slide block to reset, and that the magnetic steel is arc-shaped after finite element analysis, thereby greatly improving sensitivity of the sensor and realizing small displacement measurement. Range of measurement of the Hall linear small displacement sensor is within 0-4mm and measurement accuracy is 0.01 mm.
Description
Technical field
The present invention relates to a kind of sensor, especially measure the structure of the Hall-type rectilinear transducer of small distance, belong to sensor technical field.
Background technology
Along with modern instrument, equipment develop to intelligent direction, in the measurement occasion of small distance, new requirement has been proposed all for the degree of accuracy measured, speed etc.Adopt non-method for electrically, as measure length, thickness with chi, can not satisfy the measurement requirement with the diameter in vernier caliper measurement hole etc., more the physical quantity of measuring can not be transformed into immediately electric signal for instrument and equipment identification, so adopt electrical measuring method to become inevitable development trend.The electrical measuring method of distance is inseparable with sensor technology and electronic measurement technique.Sensor production enterprise and R﹠D institution have all carried out some researchs, but, still fail to satisfy the needs that market requires the straight-line displacement measuring accuracy.
Summary of the invention
Purpose of the present invention is exactly for satisfying the needs in market, the Hall straight line small displacement sensing device of a kind of satisfied measurement small distance requirement is provided, and realizes measurement range at 0-4 ㎜, and measuring accuracy is the target of 0.01 ㎜.This sensor can be used on the equipment such as shredder, printer, duplicating machine, printing machine, glue spreader and measures paper thickness, reaches the purpose of robotization control.
The object of the present invention is achieved like this, Hall-type straight line small displacement sensing device, comprise housing and base plate, housing bottom connects base plate, it is characterized in that, it is interface that one side of housing is provided with, and the housing top is provided with circular port, and it is that the interface place is provided with wiring board that the housing inner chamber is close to, wiring board be to link to each other with lead between the contact pin in the interface, weld Hall element on the wiring board, be provided with slide block and gauge head in the housing inner chamber, slide block and gauge head are structure as a whole, gauge head stretches out outside the housing through housing top circular port, the relative side with Hall element of slide block arranges magnet steel, is provided with the gap between magnet steel and the Hall element, is provided with back-moving spring between described slide block and the base plate.
Described slide block and housing inner chamber are slidingly matched.
Described Hall element is formula able to programme.
Described magnet steel is the camber structure.
The principle of work of Hall-type straight line small displacement sensing device is, when measured piece process gauge head, gauge head can induce the thickness of measured piece and make the spring compression produce change in displacement, because magnet steel and gauge head are same one, when gauge head moves, magnet steel will move thereupon, thereby magnetic field intensity will produce corresponding variation, and output voltage also can produce corresponding variation, voltage transmission given the ECU of system by lead-in wire, comprehensive other parameters of ECU are sent instruction control assigned work.After when measured piece leaves gauge head, back-moving spring makes gauge head return to original state.
The present invention is rational in infrastructure simple, be provided with back-moving spring between slide block and the base plate, back-moving spring can guarantee resetting of gauge head and slide block, magnet steel adopts specially designed camber structure after finite element analysis, improved the sensitivity of sensor greatly, make the measurement to micro-displacement become possibility, realize measurement range 0-4mm, the target of measuring accuracy 0.01mm.Hall element is formula able to programme, and parameters such as output voltage can be made amendment by program, and can compensate temperature, magnetic field intensity etc., has improved the linearity of curve of output greatly, parameters such as synchronous degree.This sensor can be used on the equipment such as shredder, printer, duplicating machine, printing machine, glue spreader and measures paper thickness, reaches the purpose of robotization control.
Description of drawings
Fig. 1 is a kind of outside drawing of the present invention.
Fig. 2 is the A-A cut-away view of Fig. 1.
Among the figure: 1 gauge head, 2 housings, 3 wiring boards, 4 magnet steel, 5 Hall elements, 6 leads, 7 are interface, 8 contact pins, 9 base plates, 10 back-moving springs.
Embodiment
Side setting at housing 2 is interface 7, and namely the contact pin in the interface links to each other with wiring board 3 by lead 6, welding one Hall element 5 on the wiring board 3.
Cooperate a slide block at housing 2 inner chambers, slide block and gauge head 1 one, gauge head is the column type gauge head, and slide block can slide in cavity, and gauge head 1 stretches out housing 2 through housing 2 top circular holes.With Hall element 5 relative sides magnet steel 4 is set at slide block, keeps certain interval between magnet steel 4 and the Hall element.Between described slide block and the base plate 9 back-moving spring 10 is set, back-moving spring can guarantee resetting of gauge head 1.When working sensor, gauge head 1 detects the micro-displacement of measured piece, drive slide block and on magnet steel move as straight line, at this moment the Hall element 5 relative with slide block detects the subtle change in magnetic field, convert it into electric signal, the via line plate is handled the back and is exported as test signal.Hall element is formula able to programme, and parameters such as output voltage can be made amendment by program, and can compensate temperature, magnetic field intensity etc., has improved the linearity of curve of output greatly, parameters such as synchronous degree.Magnet steel adopts specially designed camber structure after finite element analysis, and the sensitivity that has improved sensor greatly makes the measurement to micro-displacement become possibility, realizes measurement range 0-4mm, the target of measuring accuracy 0.01mm.
Hall-type straight line small displacement sensing device can be applicable in the automatic measurement of multiple instrument and equipments such as shredder, printer, duplicating machine, glue spreader.
Distance between the blade of traditional shredder can't automatically adjust according to the number of paper, how much no matter puts into the paper number, and the distance of its blade is always certain, if paper is many, will block.If sensor is contained in the corresponding site of shredder, the gauge head of Hall element can produce different subtle change along with the number of paper, and the output of the form by output voltage, the ECU of shredder will control distance between blade according to detected output voltage.
2 paper or above phenomenon appear once entering in printer, duplicating machine, printing machine sometimes; carry out the front end paper feed and detect if sensor is contained in printer, duplicating machine, printing machine, as in case when detecting above a piece of paper, will auto stop; handle, to reduce the fault of equipment.
Glue spreader is that glue is coated in equipment on the paper, and the thickness of its glue has certain standard, can not be blocked up can not be thin excessively, therefore need the cover system of control glue-spread automatically.Hall-type straight line small displacement sensing device is installed in the position of glue spreader paper delivery, detection is coated with the thickness of the self-adhesive paper of gluing, convert its detected thickness to voltage signal through sensor and give ECU, compare with the setting value among the ECU, allow deviation signal control glue-spread after the comparison, thereby the thickness that guarantees self-adhesive paper meets the requirements.
Claims (5)
1. Hall-type straight line small displacement sensing device, comprise housing and base plate, housing bottom connects base plate, it is characterized in that, it is interface that one side of housing is provided with, the housing top is provided with circular port, it is that the interface place is provided with wiring board that the housing inner chamber is close to, wiring board be to link to each other with lead between the contact pin in the interface, weld Hall element on the wiring board, in the housing inner chamber, be provided with slide block and gauge head, slide block and gauge head are structure as a whole, and gauge head stretches out outside the housing through housing top circular port, and the relative side with Hall element of slide block arranges magnet steel, be provided with the gap between magnet steel and the Hall element, be provided with back-moving spring between described slide block and the base plate.
2. according to the described Hall-type straight line of claim 1 small displacement sensing device, it is characterized in that described slide block and housing inner chamber are slidingly matched.
3. according to the described Hall-type straight line of claim 1 small displacement sensing device, it is characterized in that described Hall element is formula able to programme.
4. according to the described Hall-type straight line of claim 1 small displacement sensing device, it is characterized in that described magnet steel is the camber structure.
5. according to the described Hall-type straight line of claim 1 small displacement sensing device, it is characterized in that described gauge head is the column type gauge head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320208683 CN203224208U (en) | 2013-04-23 | 2013-04-23 | Hall linear small displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320208683 CN203224208U (en) | 2013-04-23 | 2013-04-23 | Hall linear small displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203224208U true CN203224208U (en) | 2013-10-02 |
Family
ID=49251211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320208683 Expired - Fee Related CN203224208U (en) | 2013-04-23 | 2013-04-23 | Hall linear small displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203224208U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217093A (en) * | 2013-04-23 | 2013-07-24 | 扬州大学 | Hall type straight small displacement sensor |
| CN103712546A (en) * | 2013-12-31 | 2014-04-09 | 宁波市北仑机械电器有限公司 | Non-contact magnetic patch suspension type linear displacement sensor |
| CN104833298A (en) * | 2014-02-12 | 2015-08-12 | 鸿发国际科技股份有限公司 | Paper thickness detection device and paper thickness detection method thereof |
-
2013
- 2013-04-23 CN CN 201320208683 patent/CN203224208U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217093A (en) * | 2013-04-23 | 2013-07-24 | 扬州大学 | Hall type straight small displacement sensor |
| CN103712546A (en) * | 2013-12-31 | 2014-04-09 | 宁波市北仑机械电器有限公司 | Non-contact magnetic patch suspension type linear displacement sensor |
| CN104833298A (en) * | 2014-02-12 | 2015-08-12 | 鸿发国际科技股份有限公司 | Paper thickness detection device and paper thickness detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20160423 |