CN106476851A - Train running speed detection method based on non-fragment orbit and system - Google Patents
Train running speed detection method based on non-fragment orbit and system Download PDFInfo
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- CN106476851A CN106476851A CN201610883078.1A CN201610883078A CN106476851A CN 106476851 A CN106476851 A CN 106476851A CN 201610883078 A CN201610883078 A CN 201610883078A CN 106476851 A CN106476851 A CN 106476851A
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- distance
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- fragment orbit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
- B61L25/021—Measuring and recording of train speed
Abstract
The invention discloses a kind of train running speed detection method based on non-fragment orbit and system, method and step includes：Pass through contactless distance measuring sensor and detect the distance between train body bottom, non-fragment orbit curve in train travelling process；Detect time interval T between adjacent rising edges or trailing edge in described distance Curve；Calculate the speed of service of train according to V=L/T, wherein V represents the speed of service of train, and L represents the distance of adjacent sleeper on non-fragment orbit；System includes distance Curve collecting unit, time interval detector unit and speed calculation unit.The present invention has that accuracy in detection is high, measurement will not be caused affected by wheel wear and idle running, the reliable life-span length of non-cpntact measurement, do not affected by weather or tunnel, can all weather operations, need not with train existing system carry out communicating, easily extend, structure simple, with low cost, safeguard simple advantage.
Description
Technical field
The present invention relates to the speed of service detection technique of high-speed railway is and in particular to a kind of train based on non-fragment orbit is transported
Row speed detection method and system.
Background technology
With the continuous improvement of train running speed, accurate train real time execution speed is the normal work of a lot of mobile units
Make basis, the whether accurate train kilometer that is directly connected to of this data demarcates position, the performance of the technology such as traction, braking force control.
But the various train speed detection techniques using at present have the shortcomings that it is certain.Train calculates the speed of service and mainly has at present
2 kinds of methods, one kind is velocity sensor method, and another kind is GPS method.Velocity sensor method is installation rate sensing on motor
Device, is multiplied by, by detecting the rotating speed of rotor, the rotating speed that the gear ratio between motor for the axletree can calculate wheel, then again
Calculate the linear velocity of wheel tread by the wheel footpath of wheel, to represent the gait of march of train with this linear velocity.But the party
Method there are disadvantages that：1) axletree is typically engaged by multi-stage gear between rotor, due to manufacturing tolerance and abrasion etc.
There is distortion and lead to speed calculation error in this gear ratio；2) wheel is not the radius cylinder such as, is certain taper, train
Being in operation between wheel and car body is flexible suspension, and the diameter of the wheel portion that left and right play leads to contact understood with rail by wheel
Always in change, this can calculate to speed and bring error；3) wheel is an attrition component, with stepping on of train operation wheel
Face external diameter can gradually wear out, and leads to wheel footpath to change, and calculate to speed and bring error；4) pull strength or brake force are worked as during train operation
Exceed wheel during maximal friction and idle running occurs, although now wheel tread linear velocity is not train running speed, to car
Speed calculates and introduces significant errors.GPS method is to install GPS module ON TRAINS, realizes train operation speed by global positioning system
The detection of degree.The method there is also the problem in tunnel or mountain area dropout although can enter by increasing inertial navigation
Row compensates, but is also limited use for long tunnel.
Non-fragment orbit makees ballastless track again, refers to replace shot rubble using mass-type foundations such as concrete, asphalts
The track structure of railway roadbed is referred to as non-fragment orbit.Its sleeper is that concrete casting forms in itself, and roadbed is without rubble, steel
Rail, sleeper are directly layered in way of concrete foundations.Non-fragment orbit is made up of rail, fastener, cell board, plays damping, decompressing effect.No
Tiny fragments of stone, coal, etc. orbital forcing is good, good stability, long service life, good endurance, and maintenance work is few, it is to avoid splashing railway ballast.No tiny fragments of stone, coal, etc. rail
The advanced railway technology in the Dao Shi world today, it is possible to reduce safeguard, reduce dust, beautify the environment and train speed per hour can reach
To more than 400 kilometers.
In sum, because the current velocity sensor adopting detection speed method can be due to this biography such as manufacturing tolerance and abrasion
There is distortion and lead to speed calculation error in dynamic ratio；Understand the diameter of the wheel portion leading to contact because of vibration about wheel with rail
Change, calculates to speed and brings error；Wheel footpath can be led to change, calculates to speed and bring error because the tread abrasion of wheel；
Can calculate to speed and introduce error because wheel spin.And GPS method there is also the problem in tunnel or mountain area dropout, lead
Cause the problem of vehicle speed measurement error.
Content of the invention
The technical problem to be solved in the present invention：For the problems referred to above of prior art, provide a kind of accuracy in detection high, no
By wheel wear and idle running, measurement can be caused to be affected, the reliable life-span length of non-cpntact measurement, not be subject to weather or tunnel
Impact, can all weather operations, need not with train existing system carry out communicating, easily extension, structure simple, with low cost, safeguard
The simple train running speed detection method based on non-fragment orbit and system.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
On the one hand, the present invention provides a kind of train running speed detection method based on non-fragment orbit, and step includes：
1）In train travelling process, by being fixed on the contactless distance measuring sensor detection of train body bottom or bogie
Contactless distance measuring sensor is provided with the sleeper of equidistant arrangement with the distance between non-fragment orbit curve, described non-fragment orbit,
Described distance Curve is periodic square wave curve, and one of described distance Curve periodic waveform is by the first of sleeper region
The second distance composition in distance and non-sleeper region；
2）Detect time interval T between adjacent rising edges or trailing edge in described distance Curve；
3）Calculate the speed of service of train according to V=L/T, wherein V represents the speed of service of train, and L represents adjacent on non-fragment orbit
The distance of sleeper, T represents the time interval in distance Curve between adjacent rising edges or trailing edge.
Preferably, step 1）In described contactless distance measuring sensor specifically refer to laser range finder or supersonic sounding
Sensor or laser range sensor.
On the other hand, the present invention also provides a kind of train running speed detecting system based on non-fragment orbit, including：
Distance Curve collecting unit, in train travelling process, by being fixed on the non-of train body bottom or bogie
Contact distance measuring sensor detects contactless distance measuring sensor and the distance between non-fragment orbit curve, on described non-fragment orbit
It is provided with the sleeper of equidistant arrangement, described distance Curve is periodic square wave curve, and one of described distance Curve cycle ripple
Shape is to be made up of first distance in sleeper region and the second distance in non-sleeper region；
Time interval detector unit, for detecting time interval T between adjacent rising edges or trailing edge in described distance Curve；
Speed calculation unit, for calculating the speed of service of train according to V=L/T, wherein V represents the speed of service of train, L table
Show the distance of adjacent sleeper on non-fragment orbit, T represents the time interval in distance Curve between adjacent rising edges or trailing edge.
Preferably, described contactless distance measuring sensor specifically refers to laser range finder or ultrasonic range finder sensor or swashs
Ligh-ranging sensor.
The train running speed detection method tool based on non-fragment orbit for the present invention has the advantage that：
1st, the present invention calculates EMUs using laser sensor detection EMUs through the time of two adjacent sleepers and transports in real time
Scanning frequency degree, in train travelling process, by being fixed on the contactless distance measuring sensor inspection of train body bottom or bogie
Survey contactless distance measuring sensor and the distance between non-fragment orbit curve, according to adjacent rising edges in distance Curve or trailing edge
Between time interval T, on non-fragment orbit adjacent sleeper the speed of service that can be calculated train apart from L, when realizing
Only a contactless distance measuring sensor need to be installed additional in underbody and a processing unit being used for process signal can achieve motor-car
The detection of the group speed of service, structure is simple, with low cost it is easy to manipulation, safeguard simple.
2nd, the present invention calculates EMUs in fact using laser sensor detection EMUs through the time of two adjacent sleepers
When the speed of service, existing system need not be communicated with EMUs, easily be extended.
3rd, the present invention calculates EMUs in fact using laser sensor detection EMUs through the time of two adjacent sleepers
When the speed of service, the direct measurement EMUs speed of service will not by wheel wear and idle running on measurement cause to be affected.
4th, the present invention calculates EMUs in fact using laser sensor detection EMUs through the time of two adjacent sleepers
When the speed of service, non-contact measurement system is reliable, life-span length.
5th, the present invention calculates EMUs in fact using laser sensor detection EMUs through the time of two adjacent sleepers
When the speed of service, do not affected by weather or tunnel, can all weather operations.
6th, the present invention is applied to trains based on non-fragment orbit all kinds of including EMUs, high ferro, ordinary train etc., has suitable
With the wide advantage of scope.
The train running speed detecting system based on non-fragment orbit for the present invention is that the train based on non-fragment orbit for the present invention is transported
The completely corresponding device of row speed detection method, therefore equally also has the train running speed based on non-fragment orbit for the present invention and examines
The aforementioned advantages of survey method, therefore will not be described here.
Brief description
Fig. 1 is the basic procedure schematic diagram of present invention method.
Fig. 2 is the distance Curve obtaining in present invention method.
Fig. 3 is the operation principle schematic diagram of laser range finder used in present invention method.
Fig. 4 is the system structure diagram in present invention method.
Specific embodiment
As shown in figure 1, the present embodiment is included based on the step of the train running speed detection method of non-fragment orbit：
1）In train travelling process, by being fixed on the contactless distance measuring sensor detection of train body bottom or bogie
Contactless distance measuring sensor is provided with the sleeper of equidistant arrangement with the distance between non-fragment orbit curve, non-fragment orbit, such as Fig. 2
Shown, distance Curve is periodic square wave curve, and one of distance Curve periodic waveform be by sleeper region first away from
From the second distance composition with non-sleeper region；Referring to Fig. 2, wherein L represents the distance of adjacent sleeper on non-fragment orbit, and T represents
Time interval between adjacent rising edges or trailing edge in distance Curve, i.e. the time span of a cycle waveform（Distance Curve
Wave period）；
2）Time interval T between adjacent rising edges or trailing edge in detecting distance curve；
3）Calculate the speed of service of train according to V=L/T, wherein V represents the speed of service of train, and L represents adjacent on non-fragment orbit
The distance of sleeper, T represents the time interval in distance Curve between adjacent rising edges or trailing edge.
The present embodiment passes through contactless distance measuring sensor and detects the distance between train body bottom, non-fragment orbit, when
Contactless distance measuring sensor can detect periodic distance change data, distance with sensor during train orbiting
Short place is sleeper, is railway roadbed apart from remote place, is usually spaced substantially equidistant with 650mm due to high-speed railway sleeper,
I.e. on non-fragment orbit, the distance of adjacent sleeper is 650mm, so train operation just can be calculated by calculating the cycle of waveform
Time interval T used by 650mm, can obtain the speed of train operation with sleeper pitch 650mm divided by time interval T.
In the present embodiment, step 1）In contactless distance measuring sensor specifically refer to laser range finder, in addition can also
Adopt laser range sensor or ultrasonic range finder sensor as needed.Laser range finder is using laser, the distance of target to be entered
The equipment of row Accurate Determining, referring to Fig. 3, laser range finder includes laser emitting elements, laser to the operation principle of laser range finder
Receiving element, timing circuit and signal processing circuit, laser range finder operationally passes through laser emitting elements and projects to target
A branch of very thin laser, by laser pick-off element receive target reflection laser beam, and by timing circuit mensure laser beam from
It is transmitted into the time of reception, thus calculating from observer's range-to-go.Laser range finder typically adopts two ways
Measurement distance：Impulse method and phase method.The process of impulse method range finding is such：The laser that diastimeter is launched is through measured object
Received by diastimeter after the reflection of body, the diastimeter time that recording laser comes and goes simultaneously again.The product of the light velocity and two-way time
Half is it is simply that the distance between diastimeter and object being measured.Laser ranging is one of light wave range finding distance measuring method, referring to
Fig. 3, if light is propagated in A, B point-to-point transmission round trip required time as t in atmosphere with speed c, A, B distance between two points D
Representing, in formula, D represents survey station point A, B distance between two points to available expression D=ct/2, and c represents speed, and t represents that light comes and goes A, B
The once required time.
As shown in figure 4, the car body 1 of the train of high-speed railway is bearing on rail 3 by wheel 2, rail 3 passes through sleeper 4
It is bearing on railway roadbed 5, sleeper 4 is also sleeper/sleeper/anti-corrosion sleeper, sleeper 4, as the carrying object of rail 3, is for ferrum
The material on road, the laying of dedicated track traveling equipment and load bearing equipment place mat, is not typically now wooden.The present embodiment is based on no
The train running speed detection method of tiny fragments of stone, coal, etc. track is in use, need to install fixed laser survey in train body bottom or bogie
Distance meter 6, and laser range finder 6 is connected with processing unit 7 by cable, this is completed by laser range finder 6 and processing unit 7
The abovementioned steps based on the train running speed detection method of non-fragment orbit for the embodiment.Car body 1 is laser range finder 6 and processes single
The installation carrier of unit 7.Wheel 2 is the running part of train.Rail 3 is the supporting structure of train, and rail 3 is arranged on sleeper 4.
Sleeper 4 is used for the pressure to it for the carrying rails 3.Railway roadbed 5 is used for carrying the pressure to it for the sleeper 4.Laser range finder 6 is used for gathering
Sensor detection direction obstacle arrives the distance between laser range finder 6, and by range information biography number to processing unit 7, laser
Cable between diastimeter 6 and processing unit 7 is made up of holding wire and power line, for laser range finder 6 and processing unit 7 it
Between be powered and obtain range data.Processing unit 7 is made up of processor, power supply etc., can power to laser range finder 6,
And gather the data of laser range finder 6, complete train running speed detection in real time.Laser range finder 6 is arranged on car body 1, peace
Holding position guarantees that the laser beam of laser range finder 6 can be irradiated on sleeper 4.When train operation, laser range finder 6 is examined in real time
Survey the distance of underlying barrier object distance laser range finder 6, the range profiless being similar to Fig. 2 can be formed, laser range finder 6 is by railway roadbed 5
Corresponding waveform trailing edge when running on sleeper 4, when laser range finder 6 is run on railway roadbed 5 by sleeper 4, corresponding waveform rises
Edge, measuring time interval T between two trailing edges by processing unit 7 is that laser range finder 6 is run to by one block of sleeper 4
The time of another block of sleeper.Sleeper pitch L due to each high ferro circuit is fixing, generally 650mm, you can must fall out
Real time execution speed V=L/T of car.Certainly, laser range finder 6 and processing unit 7 can not also adopt cable to connect in addition
Mode, and then to improve integrated level and minimizing by the way of laser range finder 6 and processing unit 7 are integrated together and refer to
Take.
The abovementioned steps 1 based on the train running speed detection method of non-fragment orbit for the present embodiment）～3）It is based on process
Computer program in unit 7, come to realize, is realized based on non-fragment orbit based on the computer program in processing unit 7
Train running speed detecting system includes：
Distance Curve collecting unit, in train travelling process, by being fixed on the non-of train body 1 bottom or bogie
Contact distance measuring sensor detects contactless distance measuring sensor and the distance between non-fragment orbit curve, and non-fragment orbit is provided with
The sleeper 4 of equidistant arrangement, distance Curve is periodic square wave curve, and one of distance Curve periodic waveform is by sleeper area
The second distance composition in first distance in domain and non-sleeper region；
Time interval detector unit, for time interval T between adjacent rising edges or trailing edge in detecting distance curve；
Speed calculation unit, for calculating the speed of service of train according to V=L/T, wherein V represents the speed of service of train, L table
Show the distance of adjacent sleeper 4 on non-fragment orbit, T represents the time interval in distance Curve between adjacent rising edges or trailing edge.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of train running speed detection method based on non-fragment orbit is it is characterised in that step includes：
1）In train travelling process, by being fixed on the contactless distance measuring sensor detection of train body bottom or bogie
Contactless distance measuring sensor is provided with the sleeper of equidistant arrangement with the distance between non-fragment orbit curve, described non-fragment orbit,
Described distance Curve is periodic square wave curve, and one of described distance Curve periodic waveform is by the first of sleeper region
The second distance composition in distance and non-sleeper region；
2）Detect time interval T between adjacent rising edges or trailing edge in described distance Curve；
3）Calculate the speed of service of train according to V=L/T, wherein V represents the speed of service of train, and L represents adjacent on non-fragment orbit
The distance of sleeper, T represents the time interval in distance Curve between adjacent rising edges or trailing edge.
2. the train running speed detection method based on non-fragment orbit according to claim 1 is it is characterised in that step 1）
In described contactless distance measuring sensor specifically refer to laser range finder or ultrasonic range finder sensor or laser ranging sensing
Device.
3. a kind of train running speed detecting system based on non-fragment orbit is it is characterised in that include：
Distance Curve collecting unit, in train travelling process, by being fixed on the non-of train body bottom or bogie
Contact distance measuring sensor detects contactless distance measuring sensor and the distance between non-fragment orbit curve, on described non-fragment orbit
It is provided with the sleeper of equidistant arrangement, described distance Curve is periodic square wave curve, and one of described distance Curve cycle ripple
Shape is to be made up of first distance in sleeper region and the second distance in non-sleeper region；
Time interval detector unit, for detecting time interval T between adjacent rising edges or trailing edge in described distance Curve；
Speed calculation unit, for calculating the speed of service of train according to V=L/T, wherein V represents the speed of service of train, L table
Show the distance of adjacent sleeper on non-fragment orbit, T represents the time interval in distance Curve between adjacent rising edges or trailing edge.
4. the train running speed detecting system based on non-fragment orbit according to claim 3 is it is characterised in that described non-
Contact distance measuring sensor specifically refers to laser range finder or ultrasonic range finder sensor or laser range sensor.
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| CN201610883078.1A CN106476851A (en) | 2016-10-10 | 2016-10-10 | Train running speed detection method based on non-fragment orbit and system |
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| CN201610883078.1A CN106476851A (en) | 2016-10-10 | 2016-10-10 | Train running speed detection method based on non-fragment orbit and system |
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Cited By (4)
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| CN109085377A (en) * | 2018-08-02 | 2018-12-25 | 北京世纪东方通讯设备有限公司 | A kind of method for detecting vehicle speed and device of track checking car |
| CN110466567A (en) * | 2019-08-29 | 2019-11-19 | 北京威莱克科技有限公司 | Train is in the detection method and system of operating status in tunnel |
| CN111612109A (en) * | 2020-05-14 | 2020-09-01 | 中国铁建高新装备股份有限公司 | Automatic checking system and method for running distance and speed of track equipment |
| CN113511236A (en) * | 2021-08-11 | 2021-10-19 | 上海无线电设备研究所 | High-precision sensing equipment and sensing method for motion state of rail transit train |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113511236A (en) * | 2021-08-11 | 2021-10-19 | 上海无线电设备研究所 | High-precision sensing equipment and sensing method for motion state of rail transit train |
| CN113511236B (en) * | 2021-08-11 | 2023-02-28 | 上海无线电设备研究所 | High-precision sensing equipment and sensing method for motion state of rail transit train |
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Effective date of registration: 20171204 Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Applicant after: ZHUZHOU CRRC TIMES ELECTRIC CO., LTD. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Applicant before: Zhuzhou Zhongche Era Equipment Technology Co., Ltd. |
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Application publication date: 20170308 |