1 geometry measurement. 2 gauge 3 cluster camera sensor
TRANSCRIPT
1
Geometry Measurement
2
Gauge
3
Cluster Camera Sensor
4
Cluster Camera Sensor
5
Cluster Camera Sensor
6
Light Sectioning
7
Laser/Camera Rail Sensor
8
Light Sectioning
9
Image Processor
V ide o Inpu t
S yncS eparator
V ideoD igitiz er
T im ing
V ide o M e m o ry
486 P C
V M E B U S
V G A /K e ybo ard
S hare dM e m o ry
A nalo g V ide o D ig itize d Im age R ail P ro file /M e asu re m e nts
10
Calibration Target
11
Calibration Image
12
Geometry Measurement from Profiles
13
Curvature
14
Superelevation
15
Simple Superelevation
Car and rail.pcx
16
Not So Simple Superelevation
17
Fully Compensated Superelevation
18
Twist
19
Chord Based Top
20
Chord Based Top Problems
• Car body is the cord – body flex
• Distorts track signature
• Requires six rail sensor
• Cannot see certain faults
21
Periodic Faults
22
Space Curve Top
23
Top - TrackLine
24
Top – LR3K & UGMS
25
Top Filtering – Why?
26
Top Filtering
• Filtering limits response of long track features
• Solves the problem of signal noise
27
Top Filtering
• Low speed track – short filters (10 – 30m)
• High speed track – long filters (50 – 120m)
• Butterworth, Bessel ?
• Linear phase response, sharper cutoff
• Your mileage may vary
28
Simple Alignment
29
Partially Compensated Alignment
30
Fully Compensated Alignment
31
Inertial Package
32
Inertial Package Electronics
33
Inertial System Block Diagram
34
Laserail VME Chassis
35
LR3K Data Flow Diagram
Im age P ro c e sso r
Im age P ro c e sso r
Im age P ro c e sso r
Im age P ro c e sso r
Im age P ro c e sso r
Im age P ro c e sso r
Im age P ro c e sso r
Im age P ro c e sso r
LT C 3 L as er C T R L
G eometry P roc es s or
C ollec ts all real- time dataP roduc es R A W data
rec ordsC alc ulates G E O M E T R Y
IO P roc es s or
S ys te m S ta rtupO pe ra to r In te rfa ce (V G A )
C o lle c ts fins ihe d da ta fro mG E O P ro c
N e two rk C o mmsD is k I/O (R A W , B IN , L O G )C a lib ra tio n / D ia gno s tics
C a me ra
C a me ra
C a me ra
C a me ra
C a me ra
C a me ra
C a me ra
C a me ra
V M E B us
T ac h
IM U
G P S S ync N et D is k
N e two rk
R S -232
R S -232
L as er
L as er
36
Inside of Laserail Beam
37
CP 63 GRMSGeometry Car Consist
38
Box Car
39
Unloaded Gauge
40
Tube Laser
41
CP 63 GRMSGeometry Car
42
Laserail Beam
43
CP 64Observation Area
44
CP 64Operators Station
45
CP 63Geometry Car Interior
46
Inertial Package Mounting Detail
47
Geometry Strip Chart
48
Equipment Requirements
Reliability
• Reliability– High Reliability to achieve frequency of test
• No moving parts
• Withstands extreme shock
• Custom designed lasers / MTBF of 10,000 hours
• Hardened CCD cameras
• Complete recording season without corrective maintenance
49
Laserail Camera on bogie
50
Locomotive Installation
51
Location Information
52
• GPS– Low cost GPS receiver
• Accurate location information
• No differential GPS
• Determine switches and track features
• Accurate calibration of the tachometer
Location Information
GPS
53
Location Information
Switch Detectors
• Switch Detectors– Determine the location of frogs in switches
• One detector on each rail
• Repeatable markers
• Switch direction indicated by Geometry
54
Location Information
Tachometer
• Tachometer– Axle mount tachometer
• Calibrated in real-time