CN202661478U - Passive speed sensor - Google Patents
Passive speed sensor Download PDFInfo
- Publication number
- CN202661478U CN202661478U CN 201220168627 CN201220168627U CN202661478U CN 202661478 U CN202661478 U CN 202661478U CN 201220168627 CN201220168627 CN 201220168627 CN 201220168627 U CN201220168627 U CN 201220168627U CN 202661478 U CN202661478 U CN 202661478U
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- coil
- iron core
- outer housing
- sensor
- permanent magnet
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Abstract
The utility model discloses a passive speed sensor for detecting the revolving speed of a traction motor and various motor gears. The passive speed sensor comprises an iron core, a coil, a coil frame, a permanent magnet, a fixed nut, a sensor shell and a connector socket; one end of the permanent magnet is fixedly connected with one end of the iron core, the coil frame is sleeved on the iron core, the coil is wound on the coil frame, and the connector socket is connected with the coil via a lead; the other end of the iron core is provided with a polysulfone gasket; the other end of the permanent magnet is provided with a cover board, the fixed nut presses the cover board, and the external surface of the fixed nut is fixedly connected with the inner surface of the sensor shell. The passive speed sensor provided by the utility model is oil-proof, dustproof, anti-interference, anti-vibration and low in failure rate, and can be used in hostile environment for long time.
Description
Technical field
The utility model relates to a kind of speed pickup, relates in particular to a kind of passive velocity transducer.
Background technology
On the rail vehicle, precision and the reliability of the rate signal that it collects depended in the control of automotive power to a great extent, and the rate signal that gathers comprises the variable quantity of present speed value and speed.In the traction control of locomotive, wheel slip protection, Train Control, car door control procedure, all to relate to the acquisition problems of rate signal.We can find in various rail vehicles, and this task is to be finished by various speed pickups.
At present, when detecting traction motor and other various motor speed, also have and to adopt passive velocity transducer, but general passive velocity transducer leakage field is larger, raising along with the traction motor rotating speed, the passive velocity transducer output amplitude can significantly promote, signal amplitude was poor larger when this can cause traction motor from low speed to high speed, make jitter, the possibility that misoperation appears in control system increases, and when the traction motor rotating speed is very large, thereby to such an extent as to the output signal amplitude thereupon fast rise the next stage monitoring loop produced a larger voltge surge damage components and parts.
In addition, general passive velocity transducer only is 1 or 2 pinion wheel for detection of modulus, does not detect the larger transmission gear rotating speed of modulus and be suitable for.And for detecting the larger gear of modulus, the size of its permanent magnet, coil and coil rack is larger, and must satisfy in the output signal amplitude of sensor under the prerequisite of request for utilization, the coil resistance need to meet the specification equally, need to through repeatedly calculating and test the model that to determine various equipment and the canoe of coil, therefore can not adopt common passive velocity transducer to detect.Such as for the transmission gear modulus being the type transmission gears such as 6, general passive velocity transducer can't detect it.
The utility model content
The utility model is for the foregoing problems that the existing passive speed pickup exists, propose a kind of simple in structure, signal stabilization reliable, failure rate is low, long service life, physical dimension can satisfy the order goods passive velocity transducer of technical conditions of client.
The utility model provides a kind of passive velocity transducer, and this sensor comprises iron core, coil, coil rack, permanent magnet, cover plate, hold-doun nut, sensor outer housing and connector body; One end of permanent magnet is fixedly connected with an end of iron core, and cover has coil rack on the iron core, is wound with coil on the coil rack, and connector body is connected with coil by wire; The other end cover of iron core has the polysulfones packing ring; The other end of permanent magnet is provided with cover plate, is pressed with hold-doun nut on the cover plate, and the outside surface of hold-doun nut is fixedly connected with the sensor outer housing inside surface.
As further improvement of the utility model, the inside surface of sensor outer housing has internal thread, and the outside surface of hold-doun nut is provided with the external thread with sensor outer housing inside surface internal thread coupling.
As further improvement of the utility model, the two ends of coil are respectively equipped with extension line, two extension lines respectively with the end welding of two wires, the other end of two wires welds with the contact pin of connector body.
As further improvement of the utility model, the gap between iron core, coil rack, permanent magnet, cover plate and the sensor outer housing is filled with epoxide-resin glue.
As further improvement of the utility model, be filled with epoxide-resin glue in the sensor outer housing.
As further improvement of the utility model, also comprise the sensor tail cover that is fixedly connected with sensor outer housing, be fixedly connected with by the first screw between sensor tail cover and the connector body.
As further improvement of the utility model, be fixedly connected with by the second screw between sensor outer housing and the sensor tail cover.
The passive velocity transducer that the utility model provides, the inner employing of shell probe polysulfones packing ring carries out fastening to coil, so that the relative position of coil and iron core remains unchanged, guaranteed the stability of sensor output signal; Simultaneously, by cover plate and the hold-doun nut that screws permanent magnet, iron core, coil and polysulfones packing ring integral body are fixed and clamped with sensor outer housing, make sensor easy to assembly, realized the fastening of sensor internal structure, strengthen its stability.
Description of drawings
Fig. 1 is the structural representation of the passive velocity transducer that provides of the utility model.
Among the figure, 1---connector body, 2---sensor tail cover, 3---the second screw, 4---the polysulfones packing ring, 5---coil, 6---coil rack, 7---iron core, 8---permanent magnet, 9---cover plate, 10---hold-doun nut, 11---sensor outer housing, 12---wire, 13---epoxy resin, 14---the first screw.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model provides a kind of passive velocity transducer, and its structure comprises iron core 7, coil 5, coil rack 6, permanent magnet 8, cover plate 9, hold-doun nut 10, sensor outer housing 11 and connector body 1 as shown in Figure 1.One end of permanent magnet 8 and an end of iron core 7 are fixed, and cover has coil rack 6 on the iron core 7, is wound with coil 5 on the coil rack 6, and connector body 1 is connected with coil 5 by wire 12.The other end of iron core 7 is equipped with polysulfones packing ring 4, and polysulfones packing ring 4 is that material is the engineering plastics packing ring of PSU, to realize the fixing of coil 5 and iron core 7.
The two ends of coil 5 connect respectively extension line, weld respectively two wires 12 on two extension lines.Wire 12 skins are provided with heat-shrinkable T bush, and guardwire is injury-free.The other end of two wires 12 is welded on the contact pin of connector body 1.
As shown in Figure 1, the afterbody of the passive velocity transducer that provides of the utility model also is provided with sensor tail cover 2.Be fixedly connected with by the second screw 3 between this sensor tail cover 2 and the sensor outer housing 11, and connector body 1 is fastened on the sensor tail by the first screw 14 and overlaps on 2.
As shown in Figure 1, gap between iron core 7, coil rack 6, permanent magnet 8, cover plate 9 and the sensor outer housing 11 and sensor outer housing 11 inside all are filled with epoxide-resin glue 13, with the cure sensor inner structure, improve vibration resistance and the stability of sensor, the serviceable life of improving passive velocity transducer of the present utility model.
In order better to realize the purpose of this utility model, in the utility model, sensor outer housing 11 is made by stainless steel, can improve the antijamming capability of described passive velocity transducer.Described connector body 1 can adopt aviation socket, but is not limited to this.
Magnetic conduction gear rotation before the passive velocity transducer probe that the utility model provides, when popping one's head in every process tooth root and tooth top, magnetic resistance in the magnetic circuit is changed, thereby cause the magnetic field magnetic flux in the sensor to change, have electric current in the coil and produce electromotive force, the variation of the waveform of electromotive force generating period with the rotation of gear, thus detect the rotating speed of gear and motor.
The passive velocity transducer that the utility model provides is grease proofing, dustproof, anti-interference, anti-vibration, and failure rate is low can be long-term used in rugged environment.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a passive velocity transducer comprises iron core (7), coil (5), coil rack (6), permanent magnet (8), cover plate (9), hold-doun nut (10), sensor outer housing (11) and connector body (1);
It is characterized in that, an end of permanent magnet (8) is fixedly connected with an end of iron core (7), and the upper cover of iron core (7) has coil rack (6), is wound with coil (5) on the coil rack (6), and connector body (1) is connected with coil (5) by wire (12); The other end cover of iron core (7) has polysulfones packing ring (4); The other end of permanent magnet (8) is provided with cover plate (9), is pressed with hold-doun nut (10) on the cover plate (9), and the outside surface of hold-doun nut (10) is fixedly connected with sensor outer housing (11) inside surface.
2. passive velocity transducer according to claim 1 is characterized in that, the inside surface of sensor outer housing (11) has internal thread, and the outside surface of hold-doun nut (10) is provided with the external thread with sensor outer housing (11) inside surface internal thread coupling.
3. passive velocity transducer according to claim 1, it is characterized in that, the two ends of coil (5) are respectively equipped with extension line, two extension lines respectively with the end welding of two wires (12), the contact pin of the other end of two wires (12) and connector body (1) welds.
4. passive velocity transducer according to claim 1 is characterized in that, the gap between iron core (7), coil rack (6), permanent magnet (8), cover plate (9) and the sensor outer housing (11) is filled with epoxide-resin glue (13).
5. according to claim 1 or 4 described passive velocity transducers, it is characterized in that, be filled with epoxide-resin glue (13) in the sensor outer housing (11).
6. passive velocity transducer according to claim 1, it is characterized in that, also comprise the sensor tail cover (2) that is fixedly connected with sensor outer housing (11), be fixedly connected with by the first screw (14) between sensor tail cover (2) and the connector body (1).
7. passive velocity transducer according to claim 6 is characterized in that, is fixedly connected with by the second screw (3) between sensor outer housing (11) and the sensor tail cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168627 CN202661478U (en) | 2012-04-20 | 2012-04-20 | Passive speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168627 CN202661478U (en) | 2012-04-20 | 2012-04-20 | Passive speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661478U true CN202661478U (en) | 2013-01-09 |
Family
ID=47456376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220168627 Expired - Fee Related CN202661478U (en) | 2012-04-20 | 2012-04-20 | Passive speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661478U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374941A (en) * | 2014-09-24 | 2015-02-25 | 昆山腾朗电子有限公司 | Engine rotating speed measuring device |
| CN104849486A (en) * | 2014-11-24 | 2015-08-19 | 重庆斯凯力科技有限公司 | Rotating speed sensor |
| CN109406820A (en) * | 2018-12-12 | 2019-03-01 | 张波 | A kind of small-sized A/EBS sensor |
| CN111474379A (en) * | 2020-03-26 | 2020-07-31 | 南方科技大学 | Passive vehicle speed sensor |
| CN111829575A (en) * | 2019-04-18 | 2020-10-27 | 南京库尔卡传感科技有限公司 | Speed and temperature integrated sensor |
-
2012
- 2012-04-20 CN CN 201220168627 patent/CN202661478U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374941A (en) * | 2014-09-24 | 2015-02-25 | 昆山腾朗电子有限公司 | Engine rotating speed measuring device |
| CN104849486A (en) * | 2014-11-24 | 2015-08-19 | 重庆斯凯力科技有限公司 | Rotating speed sensor |
| CN109406820A (en) * | 2018-12-12 | 2019-03-01 | 张波 | A kind of small-sized A/EBS sensor |
| CN111829575A (en) * | 2019-04-18 | 2020-10-27 | 南京库尔卡传感科技有限公司 | Speed and temperature integrated sensor |
| CN111474379A (en) * | 2020-03-26 | 2020-07-31 | 南方科技大学 | Passive vehicle speed sensor |
| CN111474379B (en) * | 2020-03-26 | 2022-05-31 | 南方科技大学 | Passive vehicle speed sensor |
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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: 20130109 Termination date: 20180420 |