TonyM
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- Dash Cam
- A139, M1S
Not really a dashcam (hence off-topic) but interesting anyway.
Cameras strapped to trains help Network Rail fix tracks in record time
Five monitoring trains equipped with Plain Line Pattern Recognition (PLPR) have been launched as part of Network Rail’s ”predict and prevent” strategy. PLPR uses cameras mounted under trains to identify track defects, alerting Network Rail engineers to where repairs are needed. The system monitors and records track condition information, and can spot problems such as missing fasteners, excess ballast and ineffective rail clamps. Image analysis software uses an algorithm to compare what the cameras see with an image of how the track should look.
The New Measurement Train (NMT), affectionately known as the Flying Banana, covers 115,000 miles in a year.
Cameras under the trains capture an image every 0.8mm, taking 70,000 images per second, creating around 10TB of image data every 440 miles. I estimate that to be a data rate of 2.8TB/hour = 6600Mb/s!
Each Plain Line Pattern Recognition image file, recorded by seven cameras on the NMT, is 2048 pixels wide and 30 miles long.
In total, the NMT is equipped with a track geometry system, laser track scanners, a high-resolution video camera, unattended geometry measurement system, and overhead line inspection systems. These are in addition to the PLPR system and a radio survey system which check coverage for the GSM-R communication system.
Cameras strapped to trains help Network Rail fix tracks in record time
Five monitoring trains equipped with Plain Line Pattern Recognition (PLPR) have been launched as part of Network Rail’s ”predict and prevent” strategy. PLPR uses cameras mounted under trains to identify track defects, alerting Network Rail engineers to where repairs are needed. The system monitors and records track condition information, and can spot problems such as missing fasteners, excess ballast and ineffective rail clamps. Image analysis software uses an algorithm to compare what the cameras see with an image of how the track should look.
The New Measurement Train (NMT), affectionately known as the Flying Banana, covers 115,000 miles in a year.
Cameras under the trains capture an image every 0.8mm, taking 70,000 images per second, creating around 10TB of image data every 440 miles. I estimate that to be a data rate of 2.8TB/hour = 6600Mb/s!
Each Plain Line Pattern Recognition image file, recorded by seven cameras on the NMT, is 2048 pixels wide and 30 miles long.
In total, the NMT is equipped with a track geometry system, laser track scanners, a high-resolution video camera, unattended geometry measurement system, and overhead line inspection systems. These are in addition to the PLPR system and a radio survey system which check coverage for the GSM-R communication system.