CN102004169A - Off-pulse fault diagnosing and velocity reading correcting method for train photoelectric speed sensor - Google Patents

Off-pulse fault diagnosing and velocity reading correcting method for train photoelectric speed sensor Download PDF

Info

Publication number
CN102004169A
CN102004169A CN 201010281691 CN201010281691A CN102004169A CN 102004169 A CN102004169 A CN 102004169A CN 201010281691 CN201010281691 CN 201010281691 CN 201010281691 A CN201010281691 A CN 201010281691A CN 102004169 A CN102004169 A CN 102004169A
Authority
CN
China
Prior art keywords
train
pulse
velocity sensor
speed
light electricity
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
Application number
CN 201010281691
Other languages
Chinese (zh)
Other versions
CN102004169B (en
Inventor
徐正国
王文海
孙优贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University ZJU
Original Assignee
Zhejiang University ZJU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN2010102816919A priority Critical patent/CN102004169B/en
Publication of CN102004169A publication Critical patent/CN102004169A/en
Application granted granted Critical
Publication of CN102004169B publication Critical patent/CN102004169B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses an off-pulse fault diagnosing and velocity reading correcting method for a train photoelectric speed sensor. The method comprises the following steps of: measuring the running speed of a train by using a photoelectric speed sensor; smoothing the running speed of the train by a Holt method; when the train passes through a transponder near a rail, acquiring the positioning of the train, and calculating a running distance of the train; and then estimating and correcting the off-pulse amount of the train photoelectric speed sensor by comparing the running distance calculated by the transponder with the running distance calculated by the photoelectric speed sensor. In the method, the conventional rail facilities and train equipment are used, excessive additional investment is not needed, the aims of monitoring the off-pulse fault of the train photoelectric speed sensor and correcting the velocity reading can be fulfilled exactly and effectively, and the safe running of the train is guaranteed.

Description

Train-installed light electricity velocity sensor falls pulse fault diagnosis and velocity readings bearing calibration
Technical field
The present invention relates to rail vehicle detection technique field, relate in particular to a kind of train-installed light electricity velocity sensor and fall pulse fault diagnosis and velocity readings bearing calibration.
Background technology
The security of train operation is subjected to paying close attention to widely always.And train-installed speed pickup conduct provides the equipment of velocity information, and its reliability is directly related with the safety of train operation.In use, performance degradation takes place because being subjected to the influence of external environment condition and train self-operating in speed pickup unavoidably.The speed pickup that adopts ON TRAINS mainly is light electricity velocity sensor (photoelectric code disk) at present.The present invention then relates to a kind of method of falling pulse fault diagnosis and velocity readings correction at train-installed light electricity velocity sensor.
Train-installed light electricity velocity sensor is installed on the train wheel.When train operation, it is converted to electric impulse signal with the velocity of rotation of train wheel by grating and photovoltaic principals, after machine is handled as calculated, obtains the velocity information of train operation.But owing to be given a shock the influence of unfavorable factors such as impact and greasy dirt obstruction, its performance may be degenerated along with the growth of service time in actual use.Under identical travelling speed, the electric pulse number that the unit interval inner sensor obtains may reduce, so the velocity amplitude that truck-mounted computer obtains can be less than normal.If the driver controls train operation according to velocity amplitude less than normal, then may cause the train overspeed, be unfavorable for the safe operation of train.If can monitor, and utilize the velocity readings of correcting measuring as a result of monitoring, then can greatly improve the security of train operation the pulse fault of falling of train-installed light electricity velocity sensor.But also lacking effective means now realizes this goal.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of train-installed light electricity velocity sensor to fall pulse fault diagnosis and velocity readings bearing calibration.
The step that train-installed light electricity velocity sensor falls pulse fault diagnosis and velocity readings bearing calibration is as follows:
1) in train travelling process,, measures the travelling speed of train by train-installed light electricity velocity sensor
Figure BSA00000269898900011
2) adopt the holter method that train running speed is carried out smoothing processing;
3) according to the sampling period T of light electricity velocity sensor and the train running speed after smoothing processing
Figure BSA00000269898900012
According to formula
Figure BSA00000269898900013
Calculate the travel distance in each sampling time section
Figure BSA00000269898900014
And, calculate total walking distance of train current time with the travel distance addition in each time period
4) when the transponder of train process rail side, communicate, obtain the accurate locating information of train, and will deduct initial position location, extrapolate total walking distance L of train current time accurately by the train current location that transponder provides with the other transponder of rail;
5) total walking distance of the train current time that obtains according to step 3)
Figure BSA00000269898900021
Step 4) extrapolates accurately that the total walking distance L and the light electricity velocity sensor shadow shield of train current time should have raster count N, according to formula Estimate to obtain the umber of pulse of falling of train-installed light electricity velocity sensor
Figure BSA00000269898900023
6) according to the umber of pulse of falling of train-installed light electricity velocity sensor According to formula
Figure BSA00000269898900025
The travelling speed of the train after obtaining to proofread and correct
Figure BSA00000269898900026
Described in train travelling process, by train-installed light electricity velocity sensor, the step that measures the travelling speed of train is: from the initial alignment position, during train operation, a length is in the sampling period of T, and train operation makes wheel drive the shadow shield motion, and many gratings are arranged on the shadow shield, it rotates the light path of discontinuity blocking-up from the light source to the sensor, thereby forms
Figure BSA00000269898900027
Individual light pulse after photoelectric sensor receives light pulse, converts corresponding light pulse to
Figure BSA00000269898900028
Individual electric pulse, k=1 wherein, 2,3 ... be the discrete time index, adopt following formula to calculate the current travelling speed of train
Figure BSA00000269898900029
Wherein, D is the train wheel diameter, and N is a due raster count on the shadow shield, and T is the sampling period.
Described employing holter method is carried out the smoothing processing step to train running speed and is: to train running speed
Figure BSA000002698989000210
Carry out obtaining after the smoothing processing train running speed after smoothing processing
Figure BSA000002698989000211
First train running speed that obtains for sampling, i.e. k=1, then
Figure BSA000002698989000212
For k=2, then pass through formula
Figure BSA000002698989000213
Calculate
Figure BSA000002698989000214
Wherein
Figure BSA000002698989000215
Be the linear growth factor of the speed of estimating; For k 〉=3, then according to the train running speed of following formula calculating after smoothing processing
Figure BSA000002698989000216
With the linear growth factor
Figure BSA000002698989000217
Promptly
Figure BSA000002698989000218
Figure BSA000002698989000219
A and b are the coefficient of holter method in the formula, and span is (0,1), and value is neglected actual needs greatly and decided.
The present invention according to the principle of work of train-installed light electricity velocity sensor and fall pulsed quantity and speed and distance between relation design light electricity velocity sensor fall the pulse fault monitoring method.Its basic thought is when there is to fall the pulse fault in train-installed light electricity velocity sensor, and the speed that measures and the speed of actual motion there are differences, thereby the travel distance that causes calculating according to measuring speed also has deviation with actual value.And the other transponder of rail can provide train positioning information comparatively accurately, by comparing the pulsed quantity that falls that two distances can obtain light electricity velocity sensor.
The present invention utilizes existing orbital facilities and train-installed equipment, need not too much extra investment, can realize accurately and effectively the monitoring of falling the pulse fault of train-installed light electricity velocity sensor and the purpose of correction rate reading, guarantees the safe operation of train.
Description of drawings
Fig. 1 falls the process flow diagram of pulsed quantity monitoring method for train-installed light electricity velocity sensor;
Fig. 2 is the process flow diagram of train-installed light electricity velocity sensor velocity readings bearing calibration;
Fig. 3 is the result of implementation of train-installed light electricity velocity sensor velocity readings bearing calibration.
Embodiment
Shown in accompanying drawing 1,2, the step that train-installed light electricity velocity sensor falls pulse fault diagnosis and velocity readings bearing calibration is as follows:
1) in train travelling process,, measures the travelling speed of train by train-installed light electricity velocity sensor
Figure BSA00000269898900031
2) adopt the holter method that train running speed is carried out smoothing processing;
3) according to the sampling period T of light electricity velocity sensor and the train running speed after smoothing processing
Figure BSA00000269898900032
According to formula
Figure BSA00000269898900033
Calculate the travel distance in each sampling time section And, calculate total walking distance of train current time with the travel distance addition in each time period
Figure BSA00000269898900035
4) when the transponder of train process rail side, communicate, obtain the accurate locating information of train, and will deduct initial position location, extrapolate total walking distance L of train current time accurately by the train current location that transponder provides with the other transponder of rail;
5) total walking distance of the train current time that obtains according to step 3) Step 4) extrapolates accurately that the total walking distance L and the light electricity velocity sensor shadow shield of train current time should have raster count N, according to formula Estimate to obtain the umber of pulse of falling of train-installed light electricity velocity sensor
6) according to the umber of pulse of falling of train-installed light electricity velocity sensor
Figure BSA00000269898900039
According to formula
Figure BSA000002698989000310
The travelling speed of the train after obtaining to proofread and correct
Figure BSA000002698989000311
Described in train travelling process, by train-installed light electricity velocity sensor, the step that measures the travelling speed of train is: from the initial alignment position, during train operation, a length is in the sampling period of T, and train operation makes wheel drive the shadow shield motion, and many gratings are arranged on the shadow shield, it rotates the light path of discontinuity blocking-up from the light source to the sensor, thereby forms
Figure BSA000002698989000312
Individual light pulse after photoelectric sensor receives light pulse, converts corresponding light pulse to Individual electric pulse, k=1 wherein, 2,3 ... be the discrete time index, adopt following formula to calculate the travelling speed of train
Figure BSA000002698989000314
Wherein, D is the train wheel diameter, and N is a due raster count on the shadow shield, and T is the sampling period.
Described employing holter method is carried out the smoothing processing step to train running speed and is: to train running speed
Figure BSA000002698989000315
Carry out obtaining after the smoothing processing train running speed after smoothing processing
Figure BSA000002698989000316
First train running speed that obtains for sampling, i.e. k=1, then
Figure BSA000002698989000317
For k=2, then pass through formula Calculate
Figure BSA000002698989000319
Wherein Be the linear growth factor of the speed of estimating; For k 〉=3, then according to the train running speed of following formula calculating after smoothing processing
Figure BSA000002698989000321
With the linear growth factor
Figure BSA000002698989000322
Promptly
Figure BSA000002698989000323
A and b are the coefficient of holter method in the formula, and span is (0,1), and value is neglected actual needs greatly and decided.
Embodiment:
At three kinds of different train operation situations, described method is applied to monitor train-installed light electricity velocity sensor.These three kinds of situations are respectively: situation 1, and train passes through this section running distance with constant speed 200km/h; Situation 2, train are thought the 200km/h initial velocity, with 0.04m/s 2Be acceleration, by this section running distance; Situation 3, train is with the constant speed of the 200km/h running distance by preceding 500m, again with 0.04m/s 2Acceleration by remaining distance.In each case again at eight kinds different fall the pulse fault, concrete steps of the present invention are as follows:
1. adopt light electricity velocity sensor to gather the speed of train, photoelectricity biography speed sensor adopts the shadow shield of raster count N=72 to carry out impulse sampling in this process, and sampling period T=0.1s notes the umber of pulse that each sampling obtains
Figure BSA00000269898900041
Utilize formula
Figure BSA00000269898900042
Calculate the travelling speed of train, wherein the wheel diameter D=0.89m of train.
2. the travelling speed to the train that measures adopts the holter method to carry out smoothing processing, difference according to the discrete time index, use different formula that the travelling speed of train is handled, to in processing procedure, making a=0.15, b=0.015 obtains the train running speed after smoothing processing
3. calculate total walking distance of current time according to the train running speed after smoothing processing and sampling time
Figure BSA00000269898900043
4. during through the other transponder of rail, obtain the accurate position location of train at train, and calculate to such an extent that obtain total walking distance L=3000m of accurate train.
5. total walking distance of the train current time that will obtain by step 3
Figure BSA00000269898900044
With total walking distance L of the accurate train that obtains by step 4, substitution formula
Figure BSA00000269898900045
In, calculate the pulsed quantity that falls of light electricity velocity sensor
Figure BSA00000269898900046
Diagnostic result is as shown in table 1:
Table 1 falls pulse fault diagnosis result table
Figure BSA00000269898900047
As can be seen, in different train operation situations and different falling under the pulse situation, this method all can effectively be monitored the pulsed quantity that falls of train-installed light electricity velocity sensor from monitoring result, thus the basis of laying for the velocity correction of train.
Adopt the velocity correction method that the travelling speed that measures train is proofreaied and correct below.At first, train earlier with the 200km/h constant speed be the range ability of L=3000m by a segment length.In this section walking process, adopt above-mentioned monitoring method to obtain the pulsed quantity that falls of light electricity velocity sensor
Figure BSA00000269898900051
In ensuing driving process, train is an initial velocity with 200km/h, with 0.04m/s 2For acceleration gives it the gun, according to formula
Figure BSA00000269898900052
Travelling speed to train is proofreaied and correct, and proofreaies and correct the result as shown in Figure 3.
From proofreading and correct the result as can be seen, do not carrying out timing, the travelling speed of the train that measures and actual motion speed have than big-difference, and this will threaten train traffic safety.The travelling speed of the train after the correction and actual motion speed are close, and can guarantee the security of operation of train.

Claims (3)

1. a train-installed light electricity velocity sensor falls pulse fault diagnosis and velocity readings bearing calibration, it is characterized in that its step is as follows:
1) in train travelling process,, measures the travelling speed of train by train-installed light electricity velocity sensor
Figure FSA00000269898800011
2) adopt the holter method that train running speed is carried out smoothing processing;
3) according to the sampling period T of light electricity velocity sensor and the train running speed after smoothing processing
Figure FSA00000269898800012
According to formula
Figure FSA00000269898800013
Calculate the travel distance in each sampling time section
Figure FSA00000269898800014
And, calculate total walking distance of train current time with the travel distance addition in each time period
Figure FSA00000269898800015
4) when the transponder of train process rail side, communicate, obtain the accurate locating information of train, and will deduct initial position location, extrapolate total walking distance L of train current time accurately by the train current location that transponder provides with the other transponder of rail;
5) total walking distance of the train current time that obtains according to step 3)
Figure FSA00000269898800016
Step 4) extrapolates accurately that the total walking distance L and the light electricity velocity sensor shadow shield of train current time should have raster count N, according to formula
Figure FSA00000269898800017
Estimate to obtain the umber of pulse of falling of train-installed light electricity velocity sensor
Figure FSA00000269898800018
6) according to the umber of pulse of falling of train-installed light electricity velocity sensor
Figure FSA00000269898800019
According to formula
Figure FSA000002698988000110
The travelling speed of the train after obtaining to proofread and correct
Figure FSA000002698988000111
2. a kind of train-installed light electricity velocity sensor according to claim 1 falls pulse fault diagnosis and velocity correction method, it is characterized in that described in train travelling process, by train-installed light electricity velocity sensor, the step that measures the travelling speed of train is: from the initial alignment position, during train operation, a length is in the sampling period of T, train operation makes wheel drive the shadow shield motion, many gratings are arranged on the shadow shield, it rotates the light path of discontinuity blocking-up from the light source to the sensor, thereby forms
Figure FSA000002698988000112
Individual light pulse after photoelectric sensor receives light pulse, converts corresponding light pulse to
Figure FSA000002698988000113
Individual electric pulse, k=1 wherein, 2,3 ... be the discrete time index, adopt following formula to calculate the travelling speed of train
Figure FSA000002698988000114
Figure FSA000002698988000115
Wherein, D is the train wheel diameter, and N is a due raster count on the shadow shield, and T is the sampling period.
3. a kind of train-installed light electricity velocity sensor according to claim 1 falls pulse fault diagnosis and velocity correction method, it is characterized in that described employing holter method carries out the smoothing processing step to train running speed and be: to train running speed
Figure FSA000002698988000116
Carry out obtaining after the smoothing processing train running speed after smoothing processing
Figure FSA000002698988000117
First train running speed that obtains for sampling, i.e. k=1, then
Figure FSA000002698988000118
For k=2, then pass through formula
Figure FSA000002698988000119
Calculate
Figure FSA000002698988000120
Wherein
Figure FSA000002698988000121
Be the linear growth factor of the speed of estimating; For k 〉=3, then according to the train running speed of following formula calculating after smoothing processing
Figure FSA000002698988000122
With the linear growth factor
Figure FSA000002698988000123
Promptly
Figure FSA000002698988000124
A and b are the coefficient of holter method in the formula, and span is (0,1), and value is neglected actual needs greatly and decided.
CN2010102816919A 2010-09-10 2010-09-10 Off-pulse fault diagnosing and velocity reading correcting method for photoelectric speed sensor of train Expired - Fee Related CN102004169B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102816919A CN102004169B (en) 2010-09-10 2010-09-10 Off-pulse fault diagnosing and velocity reading correcting method for photoelectric speed sensor of train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102816919A CN102004169B (en) 2010-09-10 2010-09-10 Off-pulse fault diagnosing and velocity reading correcting method for photoelectric speed sensor of train

Publications (2)

Publication Number Publication Date
CN102004169A true CN102004169A (en) 2011-04-06
CN102004169B CN102004169B (en) 2012-01-25

Family

ID=43811701

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102816919A Expired - Fee Related CN102004169B (en) 2010-09-10 2010-09-10 Off-pulse fault diagnosing and velocity reading correcting method for photoelectric speed sensor of train

Country Status (1)

Country Link
CN (1) CN102004169B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103578342A (en) * 2013-03-22 2014-02-12 柳州铁道职业技术学院 Urban rail transit vehicle-mounted locating experimental device
CN104835102A (en) * 2015-05-05 2015-08-12 北京交通大学 Train speed measuring scheme evaluation method and apparatus
CN108663534A (en) * 2017-03-30 2018-10-16 比亚迪股份有限公司 Train and its speed-measuring method and system
CN110196065A (en) * 2019-06-04 2019-09-03 北京磁浮交通发展有限公司 A kind of speed measuring and calculating of magnetic suspension train and Method for Calculate Mileage and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2255046Y (en) * 1996-07-22 1997-05-28 张跃 Sensor for measuring speed of a train
CN1818568A (en) * 2006-03-13 2006-08-16 株洲天利铁路机车车辆配件有限公司 Photoelectric speed monitoring method and device for train with magnetic transmission
CN2906557Y (en) * 2006-05-22 2007-05-30 株洲天利铁路机车车辆配件有限公司 Contact-less photoelectric train speed sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2255046Y (en) * 1996-07-22 1997-05-28 张跃 Sensor for measuring speed of a train
CN1818568A (en) * 2006-03-13 2006-08-16 株洲天利铁路机车车辆配件有限公司 Photoelectric speed monitoring method and device for train with magnetic transmission
CN2906557Y (en) * 2006-05-22 2007-05-30 株洲天利铁路机车车辆配件有限公司 Contact-less photoelectric train speed sensor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103578342A (en) * 2013-03-22 2014-02-12 柳州铁道职业技术学院 Urban rail transit vehicle-mounted locating experimental device
CN104835102A (en) * 2015-05-05 2015-08-12 北京交通大学 Train speed measuring scheme evaluation method and apparatus
CN108663534A (en) * 2017-03-30 2018-10-16 比亚迪股份有限公司 Train and its speed-measuring method and system
CN110196065A (en) * 2019-06-04 2019-09-03 北京磁浮交通发展有限公司 A kind of speed measuring and calculating of magnetic suspension train and Method for Calculate Mileage and system

Also Published As

Publication number Publication date
CN102004169B (en) 2012-01-25

Similar Documents

Publication Publication Date Title
JP5511070B2 (en) Orbit monitoring device and method
CN103707903B (en) A kind of Automatic train wheel diameter bearing calibration
CN101377524B (en) Vehicle speed measuring method based on steel rail deformation / stress parameters
CN105667542B (en) Rail transit train wheel footpath calibration method
ES2891350T3 (en) Method for monitoring components of a railway system
US6539293B2 (en) Method and device for monitoring bogies of multi-axle vehicles
US10919550B2 (en) Method and positioning device for determining the position of a track-guided vehicle, in particular a rail vehicle
CN102139704A (en) High-accuracy train positioning system based on radio frequency technology and positioning method thereof
CN103223956B (en) The abort situation robot scaling equipment of a kind of online steel rail fracture vehicle-carrying monitoring and calibrating method
CN108454652A (en) A kind of method, apparatus and system of safe and reliable real time speed measuring and consecutive tracking
CN102004169B (en) Off-pulse fault diagnosing and velocity reading correcting method for photoelectric speed sensor of train
CN109703600B (en) Method and system for calculating train wheel diameter deviation and train
CN103465938A (en) Fast and accurate positioning device and method for railway transit vehicles
KR101186345B1 (en) railway vehicle's running distance measuring system
CN106043356A (en) Urban rail train rim vertex circle diameter online detection method and system
CN108801244A (en) A kind of positioning system and method suitable for track machine people
CN102092406A (en) Optical fiber grating sensed train wheel tread state online monitoring system
CN109080666B (en) Train continuous real-time positioning system and method
CN102897194A (en) Method for processing positioning information of overhauling trolley for urban rail transit
CN105000034B (en) A kind of locomotive speedometer detected based on trackside
CN108891443A (en) The monitoring system and monitoring method of gapless rail temperature stress
CN103575265A (en) High-speed railway linear-sign/satellite/mileage gauge based mileage positioning method
KR101648340B1 (en) Device for detecting the position of the railway vehicle and hence the method
CN104711912B (en) A kind of high-speed railway mileage is to mark method
CN111071303B (en) Train control method, device and system and computer interlocking equipment

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120125

Termination date: 20150910

EXPY Termination of patent right or utility model