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Train Wheel Hub Infrared Temperature Detection System
Yoseen infrared is a company focusing on the R & D, production and sales of temperature - measuring infrared thermal camera. Our thermal cameras are widely used in human body temperature measurement, metallurgy, power system, security and other fields.
System introduction System features User benefits

1. Project Background

China's railway development is very rapid, has become the largest railway country in Asia. The railway system is an important national transportation system, and its daily stable operation is related to the normal operation of national production and life. With the increase of railway passenger flow and running frequency, it is very important to detect the temperature of the catenary and hub of the train.

 

 

 

 

2. Project Overview

With the increase of train speed, the temperature of the hub will also rise correspondingly. When the temperature of the hub is above 40℃ higher than the ambient temperature, it must be replaced, otherwise it will damage the bearing strength and the performance of the brake pad, and there are hidden dangers. In a project in Dongguan, Guangdong Province, infrared thermal camera is required to detect the temperature of the bottom wheel hub of a moving train. It is required to measure the temperature accurately and the picture is free from shadow. If abnormal temperature is found, the railway staff should be warned in time and the safety risks should be removed through maintenance.

 

3. Infrared Thermal Device Installation and Selection

As the train is in a fast motion state, the infrared thermal camera needs to be fixed on the track, so high-speed infrared thermal camera needs to be used. For long-term outdoor use, protective cover shall be installed and germanium glass shall be equipped at the front end. According to the calculation of this project, 4mm infrared lens should be installed, the field Angle is 97°×71°, and the opening at the front end of the shield is 90mm. Considering that the track will be violently shaking when the train passes by, 100*8mm germanium sheet should be installed at the front end of the shield. Installation diagram is as follows:

 

 

4. System Characteristics

Adopting the infrared detection system of the train wheel hub, the temperature of the wheel hub can be detected in real time and the alarm signal can be sent according to the pre-set warning value, so that the watchman can take corresponding measures in time to ensure the safe operation of the train. It has the following advantages:

1) It does not affect the train transportation: the temperature measurement is non-contact and does not affect the normal operation of the train.

2) Alarm visualization: infrared thermal image is provided so that the personnel on duty can quickly locate the alarm position and deal with it.

3) Automatic warning: In the detection process, if abnormal temperature of the train wheel hub is found, it will automatically alarm. The alarm information includes text information and sound information, which will prompt the specific alarm position information of the train staff for troubleshooting.

4) High detection accuracy: The sampling accuracy of the infrared thermal imager adopted is higher than that of the portable instrument, which is convenient to timely judge the specific hot spots of the train wheel hub, thus gaining precious time for accurate judgment and taking corresponding measures.

5) Short thermal response time: the time constant is only 2ms, the imaging time is short, and the image has no drag.

The system has the advantages of high reliability and real-time performance: using this system, the natural environment will not have any impact, no matter wind and rain, or low temperature and high temperature can realize uninterrupted automatic monitoring.

1) It does not affect the train transportation: the temperature measurement is non-contact and does not affect the normal operation of the train.

2) Alarm visualization: infrared thermal image is provided so that the personnel on duty can quickly locate the alarm position and deal with it.

3) Automatic warning: In the detection process, if abnormal temperature of the train wheel hub is found, it will automatically alarm. The alarm information includes text information and sound information, which will prompt the specific alarm position information of the train staff for troubleshooting.

4) High detection accuracy: The sampling accuracy of the infrared thermal imager adopted is higher than that of the portable instrument, which is convenient to timely judge the specific hot spots of the train wheel hub, thus gaining precious time for accurate judgment and taking corresponding measures.

5) Short thermal response time: the time constant is only 2ms, the imaging time is short, and the image has no drag.

The system has the advantages of high reliability and real-time performance: using this system, the natural environment will not have any impact, no matter wind and rain, or low temperature and high temperature can realize uninterrupted automatic monitoring.

technical parameter

ON-LINE TEMPERATURE MEASURING THERMAL CAMERA
Yoseen X series thermal camera has accurate temperature measurement and excellent performance, and is suitable for various complex and harsh use environments. It is an infrared thermal camera series that can be selected for use scenarios with high requirements on the performance of infrared thermal camera.
 
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  • Full-frame, high-speed accurate temp measurement
  • Has accurate temperature measurement and excellent performance
  • Professional software, data analysis and management
    Matched with the unique calibration algorithm for temperature measurement and the user-friendly software
  • Suitable for various complex & harsh environments
    No matter it is used alone or developed with secondary integration, it can meet the differentiated applications
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Model

X640D

X384D

X160A

Infrared resolution

640*480

384*288

160*120

Pixel size

17um

Frame frequency

30Hz

   50Hz

NETD

≤50mK@25℃

Wave band

8~14um

Field angle

See "Yoseen X-series Thermal Camera list" for Details

Angular resolution

Temp range

-20~150℃,10~50℃,0~300℃(customizable)

Temp accuracy

±2℃ or ±2%, can be raised to ±0.4℃

 

 

Common Parameter

Imaging distance

About 20 focal lengths to infinity

Temp measuring template

High and low temp tracking, point/line/polygon temp tracking in template, set multiple shielding areas

Image enhancement

Adaptive drawing, manual enhancement, electronic zoom

Color palette

White hot, black hot, iron red, red saturated, user-defined and others

Focus Mode

Electric/manual, electric lens supports autofocus

Data

Single frame temp

PNG / BMP/ JPG image format with temperature information

 

Temp flow

Total radiant temperature information storage

Digital video

H.264, RTSP stream media protocol, MP4 files, HDMI output interface

Data storage

Support TF card expansion and storage, up to 32GB

Electrical interface

Power supply

DC9~15V, typical power consumption 2.5W@25℃

Analog video

NTSC/PAL compound video output 

Ethernet

100/1000 Base, TCP, UDP, IP, DHCP, RTSP, ONVIF, etc.,provide SDK development kit

Serial port

RS485, support Pelco control protocol

Electric lens

12V power lens

GPIO

1 magnetic isolation input, 1 relay output

Environmental parameters

operating temp

-10~+60℃

Storage temp

-40ºC~+85℃

Humidity

Non - Condensing 10%~95%

Shell protection

IP54

Impact resistance

25G

Vibration resistance

2G

Mechanical parameter

Weight

240g(excluding lens)

Size

59(L)*58(W)*67(H)mm(excluding lens)

Installation

4 UNC-20, 4 M3 thread mounting holes

 

 

 

Yoseen X-series Thermal camera Temp Range List

 

Temp Range

Temp Accuracy

NETD

-20~150

±2℃or±2% 

50mK

0~300

±2℃or±2%

70mK

60~600

±2℃or±2%

50/90mK

100~1000

±2%

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160~1600

±2%

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Customization

 

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