CN2124173U - Infrared thermal shaft detector for railway - Google Patents
Infrared thermal shaft detector for railway Download PDFInfo
- Publication number
- CN2124173U CN2124173U CN 92225136 CN92225136U CN2124173U CN 2124173 U CN2124173 U CN 2124173U CN 92225136 CN92225136 CN 92225136 CN 92225136 U CN92225136 U CN 92225136U CN 2124173 U CN2124173 U CN 2124173U
- Authority
- CN
- China
- Prior art keywords
- railway
- infrared thermal
- utility
- model
- infrared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 claims 1
- MCMSPRNYOJJPIZ-UHFFFAOYSA-N cadmium;mercury;tellurium Chemical group [Cd]=[Te]=[Hg] MCMSPRNYOJJPIZ-UHFFFAOYSA-N 0.000 claims 1
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model relates to an infrared thermal shaft detector for railway, which belongs to a detection system, adopts the optical IR sensor, and regards the chopper wheel as the reference background type. The utility model has the advantages of simple structure, convenient use and maintenance, high sensitivity and quick respond speed. The infrared thermal shaft detector for railway can detect the external temperature of the axle housing accurately at the vehicle speed of 0-300 kilometer / hour, which is the important means of preventing excessively heated axle and cutting axle accidents, and ensuring the driving safety. The structure of the utility model is sealed and the waterproof property is good. The infrared thermal shaft detector for railway also has definite precaution against earthquake.
Description
The utility model is a kind of railway infrared ray hot box detector, is used to detect the hot box trouble of train axle.It differentiates vehicle axle box heating situation by the infrared radiation that receives vehicle axle box surface, is to prevent the combustion axle and cut an accident, guarantees the important means of traffic safety.
At present in the hot shaft detection technology, mostly adopt following several major technique both at home and abroad: a kind of is to adopt with thermally dependent resistor as infrared sensor, as the disclosed detection system of US Patent NO.345475, this system is owing to adopt thermally dependent resistor (self time constant be a millisecond order of magnitude), along with the speed of a motor vehicle changes, output signal becomes thereupon, influences detection accuracy.Second kind is to adopt photon detector, as Chinese patent 87207636 disclosed detector systems, because this detector system does not have unified reference background current potential, thereby is not easy to measure the temperature on vehicle axle box surface, influence accuracy and detection accuracy that hot box is differentiated.
The purpose of this utility model provide a kind of simple in structure, need not refrigeration, guide type infrared ray hot box detector that speed of response is fast, detection accuracy is high, that have reference background.
The purpose of this utility model is achieved in that the hot shaft detection device adopts the guide type infrared sensor, and is reference background with the chopper wheel of even perforate.When train passed through, the drive systems chopper wheel rotated with fixed frequency.The infra-red heat signal on tested axle box surface receives convergence by optical system.Through the chopper wheel modulation, be radiated and convert electric signal on the photocon to, amplify through preamplifier, after filter circuit filtering, export again.
The utility model is because the employing chopper wheel is the detection system of reference background formula, handle the thermal signal that photocon receives so can select frequency selection circuit for use, thereby has a higher detectivity, adopt the photoconduction infrared sensor, can be under the temperature of air environment-45 ℃～50 ℃ normal operation, need not equipment such as refrigeration, use, easy to maintenance.Because the time constant of photocon so this response device speed is fast, can be measured the temperature on axle box surface in the microsecond level exactly under 0～300 kilometer/hour the speed of a motor vehicle.This utility model is an all-sealed structure, and water resistance is good, and has certain earthquake counter measure.
Fig. 1 is according to the section-drawing of the railway that the utility model proposes with infrared ray hot box detector.
Be described in further detail below in conjunction with drawings and Examples:
Electrical path of the present utility model 2., electric motor starting electric capacity 3., motor 4., the Infrared Lens cover
Being fixed on system base 1. goes up.Lens cone seat
, the photocon tube
, photocon lid
Be used for fixing photocon
, chopper wheel
Be fixed in the motor rotating shaft 4..
When train through out-of-date by electric capacity 3., the drive system 4. formed of motor, drive chopper wheel
Rotate, 10. Infrared Lens receives the infrared radiation signal of rail vehicle axle box, through chopper wheel
After the modulation, be radiated the infrared ray optical direction element
On, convert thereof into electric signal by preamplifier
Amplify output.
5. the fixed electrical machinery support among the figure; 6. be protection motor plate washer; 7. be captive nut; 8. be fixing Infrared Lens pressure ring; 9. be reference resistance;
Be lens barrel;
Fixing photocon pressure ring;
Outer cover.
Claims (3)
1, a kind of railway is Infrared Lens optical system, preamplifier, drive system, reference background with its main structure body of infrared ray hot box detector, it is characterized in that adopting the photoconduction infrared sensor that the detection system of reference background formula is arranged.
2, railway according to claim 1 is characterized in that with infrared ray hot box detector the photoconduction infrared sensor is mercury cadmium telluride and indium antimonide infrared components.
3, railway according to claim 1 is characterized in that with infrared ray hot box detector reference background is a chopper wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225136 CN2124173U (en) | 1992-06-20 | 1992-06-20 | Infrared thermal shaft detector for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225136 CN2124173U (en) | 1992-06-20 | 1992-06-20 | Infrared thermal shaft detector for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2124173U true CN2124173U (en) | 1992-12-09 |
Family
ID=4967419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92225136 Granted CN2124173U (en) | 1992-06-20 | 1992-06-20 | Infrared thermal shaft detector for railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2124173U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404343C (en) * | 2003-05-14 | 2008-07-23 | 通用电气公司 | Method and apparatus for time-phased constant ir energy delta source |
| US10837866B2 (en) | 2018-04-19 | 2020-11-17 | Delphisonic, Inc. | Self-learning malfunction monitoring and early warning system |
-
1992
- 1992-06-20 CN CN 92225136 patent/CN2124173U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404343C (en) * | 2003-05-14 | 2008-07-23 | 通用电气公司 | Method and apparatus for time-phased constant ir energy delta source |
| US10837866B2 (en) | 2018-04-19 | 2020-11-17 | Delphisonic, Inc. | Self-learning malfunction monitoring and early warning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |