CN202994815U - A gear speed measuring and direction determining sensor - Google Patents
A gear speed measuring and direction determining sensor Download PDFInfo
- Publication number
- CN202994815U CN202994815U CN 201220654071 CN201220654071U CN202994815U CN 202994815 U CN202994815 U CN 202994815U CN 201220654071 CN201220654071 CN 201220654071 CN 201220654071 U CN201220654071 U CN 201220654071U CN 202994815 U CN202994815 U CN 202994815U
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- circuit board
- signal processing
- processing circuit
- hall element
- hall sensor
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Abstract
Provided is a gear speed measuring and direction determining sensor which comprises a housing, a signal processing circuit board, a magnetic steel, a first Hall sensor, a second Hall sensor, and epoxy resin glue. The housing is in an L shape. A circular hole in parallel with the vertical side of the housing axially is disposed on the horizontal side of the housing. The vertical side is a hollow container with an opening on the top of the container. The signal processing circuit board is arranged in the hollow container. The top of the signal processing circuit board is externally connected with a power cable, while the bottom of the signal processing circuit board is equipped with the magnetic steel. The first Hall sensor and the second Hall sensor which are electrically connected with the signal processing circuit board are disposed on the magnetic steel in a staggered manner. The epoxy resin glue used for being wrapped round the signal processing circuit board, the magnetic steel, the first Hall sensor, and the second Hall sensor is filled in the hollow container. The gear speed measuring and direction determining encoder has characteristics of a simple structure, ingenious design, low cost, high detecting precision, stable and reliable output signals, high anti-interference performance, and a wide operational temperature range.
Description
Technical field
The utility model relates to sensor technical field, and specifically, it is a kind ofly to sentence to sensor for testing the speed of automatically controlling of motor.
Background technology
Can realize simply and easily automatic control to motor by sensor, comprise that the detection of motor rotation speed and rotation direction is controlled.And if realize simultaneously the detection of velocity of rotation and rotation direction, need to adopt two Hall elements to realize and to detect both forward and reverse directions again by detection speed.
Hall direction sensor in known technology comprises magnet steel, and magnet steel is located at probing shell inside, in the front of magnet steel, iron plate is arranged, and the front end of iron plate is provided with two Hall elements.The Hall direction sensor of this kind structure exists installs inconvenience, the direction no-fix, and signal stabilization is poor and volume is larger, is unfavorable for the shortcomings such as production, can not satisfy modern society and produce the requirement more and more higher to the Hall direction sensor.
Therefore, prior art awaits improving and improving.
Summary of the invention
For the above-mentioned problems in the prior art, the purpose of this utility model be to provide a kind ofly facilitate that installation, signal stabilization and reliability are high, cost is low and anti-interference gear high, that operating temperature range is wider tests the speed sentences to sensor.
For achieving the above object, the utility model is realized by following technological means: gear tests the speed and sentences to sensor, comprises housing, signal processing circuit board, magnet steel, the first Hall element, the second Hall element and epoxide-resin glue; Described housing is L-type, and wherein horizontal sides is provided with axially parallel in the circular hole of perpendicular edge, and perpendicular edge is the hollow container shaped of upper end open; Described signal processing circuit board is placed in hollow container shaped, its top external power supply cable, and the bottom is provided with magnet steel; Described magnet steel is provided with the first Hall element and the second Hall element that is electrically connected with signal processing circuit board, both settings of staggering; Also be filled with epoxide-resin glue in described hollow container shaped body and be used for coating above-mentioned signal processing circuit board, magnet steel, the first Hall element and the second Hall element.
Preferably, described the first Hall element and the second Hall element stagger spacing be measure speed gears the gear spacing 1/4.
Compared with prior art, the beneficial effects of the utility model are: owing to adopting above-mentioned structural design, described shell is the L-type structural design, and is not only easy for installation, and can guarantee accurate positioning; Position Design between magnet steel and Hall element can guarantee reliability and the antijamming capability of output signal effectively, must the utlity model has wider operating temperature range simultaneously.
The utility model is reasonable in design, is skillfully constructed, and has that cost is low, accuracy of detection is high, stable output signal is reliable, characteristics such as high noise immunity and wider operating temperature range.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is partial side view of the present utility model.
In figure, each label is respectively: (1) housing, (2) signal processing circuit board, (3) magnet steel, (4) first Hall elements, (5) second Hall elements, (6) epoxide-resin glue, (7) power cable.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
Referring to Fig. 1 and Fig. 2, the utility model gear tests the speed and sentences to sensor, comprises housing 1, signal processing circuit board 2, magnet steel 3, the first Hall element 4, the second Hall element 5 and epoxide-resin glue 6; Described housing 1 is L-type, and wherein horizontal sides is provided with axially parallel in the circular hole of perpendicular edge, and perpendicular edge is the hollow container shaped of upper end open; Described signal processing circuit board 2 is placed in hollow container shaped, its top external power supply cable 7, and the bottom is provided with magnet steel 3; Described magnet steel 3 is provided with the first Hall element 4 and the second Hall element 5 that is electrically connected with signal processing circuit board 2, both settings of staggering; Also be filled with epoxide-resin glue 6 in described hollow container shaped body and be used for coating above-mentioned signal processing circuit board 2, magnet steel 3, the first Hall element 4 and the second Hall element 5.
Described the first Hall element 4 and the second Hall element 5 both stagger spacing be measure speed gears the gear spacing 1/4.
When the utility model clockwise rotated when gear, signal A is anticipating signal B on phase place, and phase differential is a, after output signal process subsequent conditioning circuit of the present utility model computing, can judge electric forward and still reverse.
When gear rotated counterclockwise, the utility model output signal became signal A delay signal B on phase place, and phase differential is a.
In fact, when still reversing for the ease of subsequent conditioning circuit judgement gear forward, the value of phase differential a generally remained on for 1/4 cycle; In order to make a can remain on for 1/4 cycle, need accurately to control the spacing that staggers between the first Hall element 4 and the second Hall element 5.
When being 4mm as the gear spacing when measure speed gears, the spacing that staggers between the first Hall element 4 and the second Hall element 5 is 1mm.
In sum, the utility model is by above-mentioned structural design, solved existing weak point in traditional sensor, provide that a kind of cost is low, accuracy of detection is high, stable output signal is reliable, testing the speed of high noise immunity and wider operating temperature range 40-150 ℃ sentence to sensor, has marketable value and huge market potential widely.
The above, only better enforcement of the present utility model, be not that the utility model is done any pro forma restriction, any those skilled in the art may utilize above-mentioned technology contents to be changed or be modified to the equivalent embodiment of equivalent variations, at this, all the technical solution of the utility model contents that do not break away from, just foundation technical spirit of the present utility model to any simple modification, equivalent variations and modification that above embodiment does, all still belongs in the scope of technical solutions of the utility model.
Claims (2)
1. a gear tests the speed and sentences to sensor, comprises housing, signal processing circuit board, magnet steel, the first Hall element, the second Hall element and epoxide-resin glue; It is characterized in that, described housing is L-type, and wherein horizontal sides is provided with axially parallel in the circular hole of perpendicular edge, and perpendicular edge is the hollow container shaped of upper end open; Described signal processing circuit board is placed in hollow container shaped, its top external power supply cable, and the bottom is provided with magnet steel; Described magnet steel is provided with the first Hall element and the second Hall element that is electrically connected with signal processing circuit board, both settings of staggering; Also be filled with epoxide-resin glue in described hollow container shaped body and be used for coating above-mentioned signal processing circuit board, magnet steel, the first Hall element and the second Hall element.
2. gear according to claim 1 tests the speed and sentences to sensor, it is characterized in that, described the first Hall element and the second Hall element stagger spacing be measure speed gears the gear spacing 1/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220654071 CN202994815U (en) | 2012-12-03 | 2012-12-03 | A gear speed measuring and direction determining sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220654071 CN202994815U (en) | 2012-12-03 | 2012-12-03 | A gear speed measuring and direction determining sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202994815U true CN202994815U (en) | 2013-06-12 |
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ID=48565984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220654071 Expired - Lifetime CN202994815U (en) | 2012-12-03 | 2012-12-03 | A gear speed measuring and direction determining sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202994815U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780110A (en) * | 2016-06-23 | 2018-11-09 | 日立金属株式会社 | Rotation detection device and belt sensor cable |
| CN109725172A (en) * | 2018-12-10 | 2019-05-07 | 陕西法士特齿轮有限责任公司 | A kind of method of determining output shaft rotary speed direction |
| CN109870589A (en) * | 2019-04-04 | 2019-06-11 | 哈尔滨恒达交通设备技术开发有限公司 | A kind of velocity sensor |
| CN111024975A (en) * | 2019-12-23 | 2020-04-17 | 北京遥测技术研究所 | Rotational speed sensor based on differential Hall device |
-
2012
- 2012-12-03 CN CN 201220654071 patent/CN202994815U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780110A (en) * | 2016-06-23 | 2018-11-09 | 日立金属株式会社 | Rotation detection device and belt sensor cable |
| CN108780110B (en) * | 2016-06-23 | 2021-01-22 | 日立金属株式会社 | Rotation detection device and cable with sensor |
| CN109725172A (en) * | 2018-12-10 | 2019-05-07 | 陕西法士特齿轮有限责任公司 | A kind of method of determining output shaft rotary speed direction |
| CN109870589A (en) * | 2019-04-04 | 2019-06-11 | 哈尔滨恒达交通设备技术开发有限公司 | A kind of velocity sensor |
| CN111024975A (en) * | 2019-12-23 | 2020-04-17 | 北京遥测技术研究所 | Rotational speed sensor based on differential Hall device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |