CN2276636Y - Passive speed sensor - Google Patents
Passive speed sensor Download PDFInfo
- Publication number
- CN2276636Y CN2276636Y CN 96239052 CN96239052U CN2276636Y CN 2276636 Y CN2276636 Y CN 2276636Y CN 96239052 CN96239052 CN 96239052 CN 96239052 U CN96239052 U CN 96239052U CN 2276636 Y CN2276636 Y CN 2276636Y
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- CN
- China
- Prior art keywords
- speed sensor
- iron core
- sensor
- coil
- passive
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- Expired - Fee Related
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Abstract
The utility model discloses a passive speed sensor used for detecting rotating speed of traction motors and various motor gears. The passive speed sensor is mainly composed of a permanent magnetic steel, an iron core, an assembled coil, a sensor outer shell, an aviation plug, etc. One end of the iron core is fixed on the permanent magnetic steel. The assembled coil is wound on the iron core. The other end of the iron core is provided with a copper sleeve. The copper sleeve is sheathed with a protective cover blocking head. The inner wall of the sensor outer shell is accompanied with Ni-Cr magnetism insulating film. The inner part of the sensor outer shell is filled with fluorine condensates. The magnetism can not leak in the passive speed sensor, and the using rate of the magnetic energy is high. The passive speed sensor has the advantages of strong anti-jamming capability, strong anti-vibration ability, and low failure rate. The passive speed sensor can be used for long-term under foul environment.
Description
The utility model relates to sensing technology, more particularly relates to a kind of passive revolution speed sensor.
At present, when detecting traction motor and various motor speed, also have and to adopt passive sensor, the traction motor speed probe of producing as U.S. GE company.Be to adopt the shell of stainless steel in the structure of this sensor as sensor, to improve antijamming capability, this sensor leakage field is bigger, raising along with the traction motor rotating speed, signal amplitude rises big, the signal amplitude difference was big when this can cause traction motor from low speed to high speed, made jitter, the structures shape of sensor itself its possibility that misoperation occurs big.Therefore, the most basic requirement is exactly a reliability to sensor; In addition, this sensor is easy to assembly for it, is provided with dismountable plate mouth, often easily causes erroneous judgement during use, when the plate mouth uses, causes sensor to damage, and failure rate is improved; This sensor adopts epoxy resin as the solidfied material in the sensor, because the fragility of epoxy resin is very easily damaged under the operating mode of vibration, so this sensor is low serviceable life, and cost is also high.
The purpose of this utility model is to solve above-mentioned existing deficiency, provides that a kind of signal stabilization is reliable, failure rate is low, the speed probe of long service life.
The purpose of this utility model can reach by following measure: this passive revolution speed sensor, mainly form by permanent-magnet steel, iron core, built-up coil, sensor outer housing, aviation plug etc., the principal feature of its structure is, one end of iron core is fixed on the permanent-magnet steel, built-up coil is equipped with copper sheathing at the other end of iron core on this iron core, be with the protecting cover plug on copper sheathing, aviation plug is connected with built-up coil by lead, has Ni-Cr on the inwall of sensor outer housing every magnetic thin film.
In order to realize purpose of the present invention better, be connected to lug plate in the end of built-up coil, built-up coil is connected better with output line.
In order to realize purpose of the present invention better, in sensor outer housing, be filled with the fluorine solidfied material, so that parts fixing, the insulation sensor internal make sensor anti-vibration performance fine, the serviceable life of having improved sensor significantly.
In order to realize purpose of the present invention better, what be with the band steel wire on the output shielding line between aviation plug and the sensor outer housing protects line sebific duct and high-pressure oil pipe joint, the connection steel bushing that one band angles in protecting the line sebific duct, steel wire is housed, when steel wire protects the line sebific duct when stressed, clamp and connect steel bushing, the angling insertion steel wire that connects on the steel bushing protects on the interior woven wire of line sebific duct, it is fixing well that rubber hose coupling is able to, protected shielding line effectively, guaranteed in the not reason sebific duct slippage and wiring place scolding tin is snapped and cause fault of when vibration; In addition, its outside of connection steel bushing that band angles has tapering, and large end face when aviation socket connection place is by screws clamp when assembling, can guarantee that its clamping force is big more towards aviation plug, connects firm more.
In order to realize purpose of the present invention better, in structure, adopt two blocks of permanent-magnet steels along being connected together, little to guarantee the output signal difference in magnitude.
This passive revolution speed sensor is owing to adopted copper sheathing, Ni-Cr every magnetic thin film and two suitable being connected together of permanent-magnet steels, guaranteed the stable of signal, signal width of cloth difference is little, when reaching 35 volts, the output valve of voltage reached the magnetic saturation state, even the raising of rotating speed can not make the peak value of voltage improve dependable performance yet thereupon; This sensor good insulation preformance, anti-interference, the anti-vibration ability is strong, its joint is solid and reliable, can use for a long time in rugged environment; This sensor has removed the installing plate mouth on the traditional sensors, has reduced failure rate widely, not only economy but also practicality.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the structural drawing of the utility model passive revolution speed sensor embodiment.
Referring to Fig. 1, this passive revolution speed sensor is by permanent-magnet steel (8), iron core (7), built-up coil (4), sensor outer housing (2), aviation plug (13) and fluorine solidfied material compositions such as (14), one end of iron core (7) is fixed on the permanent-magnet steel (8), permanent-magnet steel (8) is to link together by the principle that there is a natural attraction between the sexes with the permanent-magnet steel that two block sizes equate, make the output signal difference in magnitude little, built-up coil (4) is on iron core (7), the other end at iron core (7) is equipped with copper sheathing (3), on copper sheathing (3), be with protecting cover plug (1), protecting cover plug (1) is fixed on the sensor outer housing (2), on the inwall of sensor outer housing (2), has Ni-Cr every magnetic thin film (9), be connected to lug plate (5) in the end of built-up coil (4), so that built-up coil (4) is connected better with output shielding line (6); What be with the band steel wire on the output shielding line (6) between aviation plug (13) and the sensor outer housing (2) protects line sebific duct (11) and high-pressure oil pipe joint (10), the connection steel bushing (12) that one band angles in protecting line sebific duct (11), steel wire is housed, when steel wire protects line sebific duct (11) when being subjected to pulling force, clamp and connect steel bushing (12), the angling insertion steel wire that connects on the steel bushing (12) is protected on the woven wire of line sebific duct (11), rubber hose coupling is able to fixing well like this, protected output shielding line (6) effectively, guaranteed in the not reason sebific duct slippage and wiring place scolding tin is snapped and cause fault of when vibration; In addition, its outside of connection steel bushing (12) that band angles has tapering, and big end face is towards aviation plug (13), when screws clamp is passed through in the connection place of assembling aviation socket, can guarantee that its clamping force is big more, connect firmly more, be filled with fluorine solidfied material (14) in the sensor outer housing (2).
When the permeability magnetic material before the protecting cover plug (motor gear) rotates, with cutting magnetic line, magnetic resistance in the magnetic circuit can change, the magnetic flux of permanent magnetic field boundary is changed, then there is electric current to pass through in the coil and produces electromotive force, produce sine wave, detected the rotating speed of motor gear by magneto-electric induction.
Claims (5)
1. passive revolution speed sensor, mainly form by permanent-magnet steel (8), iron core (7), built-up coil (4), sensor outer housing (2), aviation plug (13) etc., it is characterized in that: an end of iron core (7) is fixed on the permanent-magnet steel (8), built-up coil (4) is on iron core (7), the other end at iron core (7) is equipped with copper sheathing (3), be with protecting cover plug (1) on the copper sheathing (3), aviation plug (13) is connected with built-up coil (4) by lead, has Ni-Cr on the inwall of sensor outer housing (2) every magnetic thin film (9).
2. passive revolution speed sensor according to claim 1 is characterized in that: be connected to lug plate (5) in the end of built-up coil (4).
3. passive revolution speed sensor according to claim 1 and 2 is characterized in that: be filled with fluorine solidfied material (14) in the sensor outer housing (2).
4. passive revolution speed sensor according to claim 1 and 2 is characterized in that: be with steel wire and protect line sebific duct (11) and high-pressure oil pipe joint (10) on the output shielding line (6) between aviation plug (13) and the sensor outer housing (2).In protecting line sebific duct (11), steel wire have an outside to have the connection steel bushing (12) that tapering, end face band angle.
5. passive revolution speed sensor according to claim 1 is characterized in that: described permanent-magnet steel is two blocks of suitable permanent-magnet steels that are connected together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96239052 CN2276636Y (en) | 1996-11-08 | 1996-11-08 | Passive speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96239052 CN2276636Y (en) | 1996-11-08 | 1996-11-08 | Passive speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2276636Y true CN2276636Y (en) | 1998-03-18 |
Family
ID=33914186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96239052 Expired - Fee Related CN2276636Y (en) | 1996-11-08 | 1996-11-08 | Passive speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2276636Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435764A (en) * | 2011-09-27 | 2012-05-02 | 江苏金榆科技集团有限公司 | Full-shielding automobile wheel speed sensor and installation structure thereof |
| CN107328428A (en) * | 2017-06-07 | 2017-11-07 | 常州普宸电子有限公司 | Electromagnetic induction sensor and its processing method |
-
1996
- 1996-11-08 CN CN 96239052 patent/CN2276636Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435764A (en) * | 2011-09-27 | 2012-05-02 | 江苏金榆科技集团有限公司 | Full-shielding automobile wheel speed sensor and installation structure thereof |
| CN107328428A (en) * | 2017-06-07 | 2017-11-07 | 常州普宸电子有限公司 | Electromagnetic induction sensor and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |