CN2490582Y - Electric vortex signal sensor for wheel order of rolling stock - Google Patents
Electric vortex signal sensor for wheel order of rolling stock Download PDFInfo
- Publication number
- CN2490582Y CN2490582Y CN 01233257 CN01233257U CN2490582Y CN 2490582 Y CN2490582 Y CN 2490582Y CN 01233257 CN01233257 CN 01233257 CN 01233257 U CN01233257 U CN 01233257U CN 2490582 Y CN2490582 Y CN 2490582Y
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- utility
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- sensor
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- Expired - Fee Related
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Abstract
The utility model provides an electric vortex signal sensor for wheel order of rolling stock and is characterized in that the utility model consists of sensors, a differential amplification circuit (2), a zero cross detection circuit (3), an impulse signal modulation circuit (4) and a solid state relay output circuit (5), wherein the sensors are two electric vortex sensors (1) arranged adjacently. The utility model has relatively strong anti-interference capability and is suitable for all speeds of vehicles; in addition, the sensitivity of the sensors is free from the vehicle speed; thereby the utility model has the advantages of accurate positioning and high measuring accuracy.
Description
The utility model belongs to signal transducer, particularly relates to a kind of electric vortex type rail truck position of wheel signal transducer.
In the equipment of measuring the rail truck run location, as utilize the detection instrument of infrared rays survey axle temperature, the level crossing alarm etc. of sending a car, must use a kind of wheel position of wheel signal transducer.Existing this class sensor mainly is to utilize to measure at permanent magnet with around top coil, this sensor generally is installed in the track inboard, the magnetic line of force that wheel rim cutting permanent magnet produces when vehicle passes through produces induction current in coil, produces wheel signal.
This class sensor mainly contains following several defective: the one, can't get rid of the interference of external electromagnetic field, and the output signal clutter is big, and is even more serious at electrified section; The 2nd, closely related with running velocity, speed of a motor vehicle height, signal is big, and the speed of a motor vehicle is low, and signal is little, and low-speed performance is bad; The 3rd, if there is strong jamming (as electricity sparking etc.) in the external world, easily produce glitch.Below what time cause the sensor signal mistake, the problem that glitch takes place and lose axle.
The purpose of this utility model provides a kind of electric vortex type rail truck wheel position sensing device, and it has stronger antijamming capability, is applicable to various car speeds, the irrelevant and accurate positioning of the sensitivity of sensor and car speed, measuring accuracy height.
The purpose of this utility model is achieved in that a kind of electric vortex type rail truck position of wheel signal transducer, it is made up of sensor, differential amplifier circuit, zero cross detection circuit, pulse signal modulation circuit, solid-state relay output circuit, and described sensor is the current vortex sensor of two adjacent layouts.
The utility model compared with prior art has following advantage:
1. directly produce a standard digital pulse, have stronger antijamming capability, be not subjected to the interference of external electromagnetic clutter, do not produce the problem of losing axle and glitch at center sensor point.
2. transducer sensitivity is relevant with the wheel rim height irrelevant with speed, therefore applicable to various car speeds, can not produce the little problem of signal during low speed.
3. owing to adopt the two differential schemes of testing circuit of twin coil, solved the problem of temperature drift, sensor can use under the weather conditions of cold and high temperature.Solve the problem of accurate location simultaneously, improved measuring accuracy.
4. the scheme of solid-state relay has been adopted in output, directly exports digital pulse signal and has solved long Distance Transmission interference problem, has realized that two-wire is multiplexing, has greatly simplified subsequent conditioning circuit.Reduced use cost.
5. signal and power supply are combined on the line, reduce use cost, exchange with existing sensor and use.
Fig. 1 is the utility model electric vortex type position of wheel signal transducer circuit block diagram.
Fig. 2 is the utility model coil arrangement and waveform correlation.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
The utility model is made up of two current vortex sensors 1 of W1, W2, differential amplifier circuit 2, zero cross detection circuit 3, pulse signal modulation circuit 4, solid-state relay output circuit 5.The coil periphery length of two current vortex sensors 1 is respectively 100～140mm.
Two current vortex sensor coils of W1, W2 are perpendicular to the adjacent layout of direction to the car.When passing through sensor, wheel rim produces the identical downward waveform of both direction, through the differential amplifier circuit 2 differential waveforms that amplify a near sinusoidal ripple of back generation.Behind zero-crossing comparator 3 and pulse signal modulation circuit 4, produce the digital pulse signal of a standard, this signal promotes the solid-state relay switch and produces the power supply instantaneous short circuit, produces a downward pulse output signals.
Claims (2)
1, a kind of electric vortex type rail truck position of wheel signal transducer, it is characterized in that: it is made up of sensor, differential amplifier circuit (2), zero cross detection circuit (3), pulse signal modulation circuit (4), solid-state relay output circuit (5), and described sensor is the current vortex sensor (1) of two adjacent layouts.
2, signal transducer according to claim 1 is characterized in that: the coil periphery length of described two current vortex sensors (1) is respectively 100～140mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233257 CN2490582Y (en) | 2001-08-15 | 2001-08-15 | Electric vortex signal sensor for wheel order of rolling stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233257 CN2490582Y (en) | 2001-08-15 | 2001-08-15 | Electric vortex signal sensor for wheel order of rolling stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490582Y true CN2490582Y (en) | 2002-05-08 |
Family
ID=33647141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01233257 Expired - Fee Related CN2490582Y (en) | 2001-08-15 | 2001-08-15 | Electric vortex signal sensor for wheel order of rolling stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490582Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398996C (en) * | 2006-12-14 | 2008-07-02 | 北京航空航天大学 | Integrated five freedom electric eddy sensor |
| CN100443853C (en) * | 2004-04-21 | 2008-12-17 | 爱德森（厦门）电子有限公司 | Method and apparatus for on-line detecting the depth from the Curie point temperature layer to the surface of a hot steel plate |
| CN102661997A (en) * | 2012-05-08 | 2012-09-12 | 三一重工股份有限公司 | Eddy current type sensing device and engineering machinery |
-
2001
- 2001-08-15 CN CN 01233257 patent/CN2490582Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443853C (en) * | 2004-04-21 | 2008-12-17 | 爱德森（厦门）电子有限公司 | Method and apparatus for on-line detecting the depth from the Curie point temperature layer to the surface of a hot steel plate |
| CN100398996C (en) * | 2006-12-14 | 2008-07-02 | 北京航空航天大学 | Integrated five freedom electric eddy sensor |
| CN102661997A (en) * | 2012-05-08 | 2012-09-12 | 三一重工股份有限公司 | Eddy current type sensing device and engineering machinery |
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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 |