CN203259538U - Hall gear rotating speed sensor - Google Patents
Hall gear rotating speed sensor Download PDFInfo
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- CN203259538U CN203259538U CN 201320212781 CN201320212781U CN203259538U CN 203259538 U CN203259538 U CN 203259538U CN 201320212781 CN201320212781 CN 201320212781 CN 201320212781 U CN201320212781 U CN 201320212781U CN 203259538 U CN203259538 U CN 203259538U
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- rotating speed
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Abstract
The utility model discloses a Hall gear rotating speed sensor which comprises a sensor head and a sensor housing. The sensor head is arranged in the sensor housing. The sensor head comprises a Hall assembly and a permanent magnet. The Hall assembly is arranged above the permanent magnet. The Hall assembly and the permanent magnet are fixed for forming an integrated structure through plastic packaging. The Hall gear rotating speed sensor can realize no output amplitude change of a Hall rotating speed sensor caused by rotating speed value, and furthermore has the following advantages: relatively higher measuring frequency, capability of accurately measuring low rotating speed and reverse rotating speed; higher interference resistance, and capability of performing reliable operation under complicated electromagnetic wave environment.
Description
Technical field
The utility model relates to a kind of sensor, is specifically related to a kind of rotating speed sensor for Hall gear.
Background technology
At present the survey sensor of mechanical separator speed is still realized tachometric survey take magneto-electric, hall effect type as main ultimate principle.
Magnetoelectric tachometric transducer is comprised of parts such as iron core, magnet steel, inductive coils, and when measuring the object rotation, the coil of speed probe can produce the magnetic line of force, and gear rotates the meeting cutting magnetic line, and magnetic circuit is because magnetic resistance change rate produces electromotive force in inductive coil.The voltage swing that the induced potential of magnetoelectric tachometric transducer produces, relevant with the measurand rotating speed, the voltage of the faster output of rotating speed of testee is also just larger, that is to say that output voltage and rotating speed are directly proportional.But when the rotating speed of testee surpassed the measurement range of magnetoelectric tachometric transducer, magnetic circuit loss meeting was excessive, so that output potential is saturated or even fall sharply.Rotating speed is reduced to certain scope, and sensor output signal is reduced to and is not enough to provide reliable detection signal.
The measurement of common Hall revolution speed transducer, must cooperate the variation in corresponding magnetic field, therefore when Hall revolution speed transducer is measured the equipment of non-ferromagnetic material, need in advance on rotating object the special magnet materials such as mounting magnetic steel, in order to change sensor magnetic field on every side, Hall revolution speed transducer just can accurately be sensed changes of magnetic field like this, exports corresponding square-wave signal.And the equipment that needs in the life to detect does not much possess the condition that magnet is installed, so such sensor can only be used for specific applications.
Along with automaticity more and more higher today, the speed probe that special armor car etc. use requires physical dimension little, and antijamming capability is strong, and output signal is not subjected to the impact of tachometer value, the speed probe of the functions such as rotating detection and zero-speed detection.
The utility model content
The utility model has overcome the deficiencies in the prior art, a kind of rotating speed sensor for Hall gear is provided, and in the hope of little without physical dimension in the prior art to be solved, antijamming capability is strong, output signal is not subjected to the impact of tachometer value, the speed probe problem of the functions such as rotating detection and zero-speed detection.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
A kind of rotating speed sensor for Hall gear comprises sensor head, sensor outer housing; Described sensor head is arranged on sensor outer housing inside; Described sensor head comprises: Hall subassembly and permanent magnet, and described Hall subassembly is arranged on permanent magnet top; Described Hall subassembly and permanent magnet are by the plastic packaging structure that is fixed as one.
Further technical scheme is that Hall subassembly comprises at least two Hall elements, also comprises signal conditioning circuit, and described Hall is connected with signal conditioning circuit.
Further technical scheme is that sensor outer housing is that non-magnet_conductible material is made.
Further technical scheme is that sensor outer housing is that stainless steel material is made.
Further technical scheme is that sensor outer housing has base plate, and described sensor sensing head then is arranged on this base plate, and the sensor outer housing base plate is adjacent with described sensor sensing head, and described sensor outer housing base plate is flake structure.
Further technical scheme is that Hall subassembly comprises the sensor sensing head, and described sensor sensing head is the combined sensor inductive head.
Compared with prior art, the beneficial effects of the utility model are: the utility model can realize that the output amplitude of Hall revolution speed transducer can not change because of the size of tachometer value; Survey frequency is corresponding higher, can accurately measure the slow-speed of revolution and reverse speed; Antijamming capability is stronger, can be under complicated electromagnetic wave environment reliably working.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is sensor head structural representation among embodiment of the utility model.
Fig. 3 is the circuit theory diagrams of an embodiment of the utility model.
Fig. 4 is the signal output synoptic diagram of an embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
As shown in Figure 1 and Figure 2, Fig. 1 shows the structural representation of an embodiment of the utility model, and Fig. 2 shows the structural representation of sensor head in the present embodiment.The present embodiment rotating speed sensor for Hall gear comprises sensor head 1, sensor outer housing 2; Sensor head 1 is arranged on sensor outer housing 2 inside; The present embodiment rotating speed sensor for Hall gear also comprises the peripheral auxiliary circuits 3 that is connected with sensor head 1.As the preferred embodiment scheme, the material of sensor outer housing 2 is that non-magnet_conductible material or stainless steel are made in the present embodiment, require bottom thickness thin as far as possible, thereby be conducive to improve the sensitivity of induction, the outer casing bottom adjacent with sensor head is a flake structure in the present embodiment, and specific embodiments is that sheet thickness is 0.5 millimeter.Sensor head comprises: Hall subassembly 23 and permanent magnet 21, Hall subassembly 23 are arranged on permanent magnet 21 tops; The arctic of permanent magnet 21 is adjacent with Hall subassembly 23.Hall subassembly and permanent magnet are by plastic packaging 22 structure that is fixed as one.The present embodiment rotating speed sensor for Hall gear structurally is arranged to small size, and profile can adjust as required.As preferred embodiment, Hall subassembly 23 comprises at least two Hall elements in the present embodiment, and specific embodiments is, is provided with two Halls in the present embodiment, also can arrange as required more as three, four Hall elements.Hall subassembly 23 also comprises signal conditioning circuit, and Hall is connected with signal conditioning circuit.The groundwork principle of rotating speed sensor for Hall gear is Hall effect, namely can cause potential change when the magnetic field of the metal parts that rotates by Hall element, by just can obtain the tachometer value of measured object to the measurement of electromotive force.When metal gear 24 is passed through the magnetic field of sensor head, can cause potential change in the present embodiment, and then measure tachometer value.
As shown in Figure 3, Fig. 3 shows the circuit theory diagrams of present embodiment.Hall subassembly comprises the sensor sensing head in the present embodiment, and the sensor sensing head is the combined sensor inductive head.Specific embodiment is that adopting model in the present embodiment is the combined high-precision sensor inductive head of ATS667LSG, is operated in 4V-24V wide-voltage range.The VCC port of ATS667LSG connects the negative electrode of capacitor C 1 and diode D1, the anode of diode D1 connects power supply VCC and resistance R 1, the OUT port of ATS667LSG meets outside output auxiliary circuit OUT, while connecting resistance R1 and capacitor C 2, GND end ground connection and capacitor C 1 and the second capacitor C 2 of ATS667LSG; Diode D1 is anti-reverse conducting diode, and capacitor C 1 effect is voltage filter electric capacity, and 2 pairs of output signals of the second capacitor C are carried out filtering, and resistance R 1 connects on the power supply draws.
As shown in Figure 3, Fig. 3 shows the signal output synoptic diagram of present embodiment.The present embodiment rotating speed sensor for Hall gear is when measuring, and the nose motion of rack-and-pinion 33 relative sensors is because the magnetic resistance difference causes the respective change in magnetic field.When moving component passes Hall element and produces interval that the magnetic line of force comparatively disperses, magnetic field relatively a little less than; And pass when producing regional that the magnetic line of force comparatively concentrates, magnetic field is relatively strong.Rotating speed sensor for Hall gear changes by density of line of magnetic force, produces Hall voltage 32 when the magnetic line of force passes sensing element on the sensor.The signal conditioning circuit of sensor is nursed one's health Hall voltage automatically, amplifies, contrasts and biasing through signal, triggers at last output rectangular pulse signal 31.Present embodiment rotating speed sensor for Hall gear physical dimension is little, and the output signal transmission is far away, and sensing range is wide, can adapt to complex electromagnetic environment, the functions such as rotating detection and zero-speed detection.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in instructions.Furthermore, when describing a specific features, structure or characteristics in conjunction with any embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also drop in the scope of the present utility model.
Although a plurality of explanatory embodiment with reference to utility model is described the utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (6)
1. a rotating speed sensor for Hall gear comprises sensor head, sensor outer housing; Described sensor head is arranged on sensor outer housing inside; It is characterized in that: described sensor head comprises: Hall subassembly and permanent magnet, and described Hall subassembly is arranged on permanent magnet top; Described Hall subassembly and permanent magnet are by the plastic packaging structure that is fixed as one.
2. rotating speed sensor for Hall gear according to claim 1 is characterized in that described Hall subassembly comprises at least two Hall elements, also comprises signal conditioning circuit, and described Hall is connected with signal conditioning circuit.
3. rotating speed sensor for Hall gear according to claim 1 is characterized in that described sensor outer housing is that non-magnet_conductible material is made.
4. rotating speed sensor for Hall gear according to claim 1 is characterized in that described sensor outer housing is that stainless steel material is made.
5. rotating speed sensor for Hall gear according to claim 1, it is characterized in that described sensor outer housing has base plate, described sensor sensing head then is arranged on this base plate, and the sensor outer housing base plate is adjacent with described sensor sensing head, and described sensor outer housing base plate is flake structure.
6. rotating speed sensor for Hall gear according to claim 2 is characterized in that described Hall subassembly comprises the sensor sensing head, and described sensor sensing head is the combined sensor inductive head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212781 CN203259538U (en) | 2013-04-24 | 2013-04-24 | Hall gear rotating speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212781 CN203259538U (en) | 2013-04-24 | 2013-04-24 | Hall gear rotating speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259538U true CN203259538U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320212781 Expired - Fee Related CN203259538U (en) | 2013-04-24 | 2013-04-24 | Hall gear rotating speed sensor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748272A (en) * | 2017-11-27 | 2018-03-02 | 浙江星天海洋科学技术有限公司 | Irregular component speed measuring device in closed barrel based on Hall effect |
| CN107850751A (en) * | 2015-07-29 | 2018-03-27 | Lg伊诺特有限公司 | Lens driving device, camera model and optical device |
| CN110208567A (en) * | 2019-05-28 | 2019-09-06 | 南方科技大学 | Contactless magnetic fluid rotation-speed measuring device, design method and rotating speed measurement method |
| CN110244075A (en) * | 2019-05-28 | 2019-09-17 | 南方科技大学 | A kind of gear type magnetic fluid speed probe and preparation method thereof |
| CN111381071A (en) * | 2018-12-27 | 2020-07-07 | 北京奇虎科技有限公司 | Speed abnormity detection device and method based on Hall sensor |
| CN111830274A (en) * | 2019-04-18 | 2020-10-27 | 南京库尔卡传感科技有限公司 | Non-contact Hall type electronic double-pulse speed mileage sensor |
| WO2024060414A1 (en) * | 2022-09-23 | 2024-03-28 | 上海铁路通信有限公司 | Gear speed sensor output frequency test circuit |
-
2013
- 2013-04-24 CN CN 201320212781 patent/CN203259538U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850751B (en) * | 2015-07-29 | 2022-06-24 | Lg伊诺特有限公司 | Lens driving apparatus, camera module, and optical apparatus |
| CN107850751A (en) * | 2015-07-29 | 2018-03-27 | Lg伊诺特有限公司 | Lens driving device, camera model and optical device |
| US11803028B2 (en) | 2015-07-29 | 2023-10-31 | Lg Innotek Co., Ltd. | Lens driving apparatus, camera module, and optical apparatus |
| US11442241B2 (en) | 2015-07-29 | 2022-09-13 | Lg Innotek Co., Ltd. | Lens driving apparatus, camera module, and optical apparatus |
| CN107748272A (en) * | 2017-11-27 | 2018-03-02 | 浙江星天海洋科学技术有限公司 | Irregular component speed measuring device in closed barrel based on Hall effect |
| CN111381071A (en) * | 2018-12-27 | 2020-07-07 | 北京奇虎科技有限公司 | Speed abnormity detection device and method based on Hall sensor |
| CN111830274A (en) * | 2019-04-18 | 2020-10-27 | 南京库尔卡传感科技有限公司 | Non-contact Hall type electronic double-pulse speed mileage sensor |
| WO2020238405A1 (en) * | 2019-05-28 | 2020-12-03 | 南方科技大学 | Gear-type magnetic fluid-based rotational speed sensor and manufacturing method thereof |
| CN110244075A (en) * | 2019-05-28 | 2019-09-17 | 南方科技大学 | A kind of gear type magnetic fluid speed probe and preparation method thereof |
| CN110244075B (en) * | 2019-05-28 | 2023-08-29 | 南方科技大学 | Gear type magnetic fluid rotating speed sensor and manufacturing method thereof |
| CN110208567B (en) * | 2019-05-28 | 2023-10-20 | 南方科技大学 | Non-contact magnetic fluid rotating speed measuring device, design method and rotating speed measuring method |
| CN110208567A (en) * | 2019-05-28 | 2019-09-06 | 南方科技大学 | Contactless magnetic fluid rotation-speed measuring device, design method and rotating speed measurement method |
| WO2024060414A1 (en) * | 2022-09-23 | 2024-03-28 | 上海铁路通信有限公司 | Gear speed sensor output frequency test circuit |
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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: 20131030 |