CN108731792A - A kind of method and vibration detection device for judging train and crossing vehicle - Google Patents
A kind of method and vibration detection device for judging train and crossing vehicle Download PDFInfo
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- CN108731792A CN108731792A CN201810309125.0A CN201810309125A CN108731792A CN 108731792 A CN108731792 A CN 108731792A CN 201810309125 A CN201810309125 A CN 201810309125A CN 108731792 A CN108731792 A CN 108731792A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
Abstract
The present invention is that a kind of judgement train crosses the method and vibration detection device of vehicle, provides and a kind of judging method that train crosses vehicle by detecting vibrating for the ground near the mechanical part or track that are connected with track.When train is advanced in orbit, it can cause the mechanical part being connected with track, attached subaerial vibration, a vibration detection device is fixedly mounted on ground on these mechanical parts or near track, detection device collects vibration data by acceleration transducer, then the algorithm provided through the invention calculates speed virtual value, when speed virtual value is more than preset threshold value, judgement currently has train process.Vibration detection device realizes the above method.
Description
Technical field
The present invention relates to judge that train crosses the method and vibration detection device of vehicle.
Background technology
Currently, general use through the Vibration Condition near railway to determine whether there is train to cross vehicle.Currently generally pass through
Acceleration judged that vehicle, the acceleration transducer that this method is mounted on using one in the mechanical part being connected with track were examined
Acceleration caused by vibration measuring is dynamic, the size then namely vibrated by judging the size of acceleration judge whether there is vehicle warp
It crosses, current method is too simple, such as only simply detects how many data point more than threshold value to judge vehicle, or simple
The average value of acceleration change is found out to judge, these methods are susceptible to erroneous judgement, fail to judge and can not rule out adjacent line track mistake
The problem of vehicle interferes, and control parameter is single, debugs repeatedly and ideal effect is also not achieved, and causes practical application difficult.
Invention content
The present invention for judging that the method that train crosses vehicle is susceptible to erroneous judgement, fails to judge and can not rule out adjacent line track mistake at present
The problem of vehicle interferes, and control parameter is single, debugs repeatedly and ideal effect is also not achieved, and causes practical application difficult not
Foot provides a kind of method and vibration detection device for judging train and crossing vehicle.
The technical scheme is that：A method of judging that train crosses vehicle, on the mechanical part being connected with track or
Acceleration transducer is fixedly mounted on ground by track, the acceleration value caused by vibrating is collected by acceleration transducer
After calculate speed virtual value come it is judged whether or not train pass through, include the following steps：
Step 1, detected in real time using acceleration transducer ground or with the vibration on the close-connected object in ground, with
The acceleration of each axis of output of acceleration transducer is sampled every Δ t；
Step 2, the speed for calculating each axis as follows：
v1=v0+a1Δt
v2=v1+a2Δt
.
.
vn=vn-1+anΔt；
In formula：a1、a2…anThe acceleration that time Δt, 2 time Δts ... (n-1) time Δt, n time Δts detect respectively
Degree；v0For static velocity, v1、v2、…vn-1、vnThe meter of time Δt, 2 time Δts ... (n-1) time Δt, n time Δts respectively
The speed calculated；
Step 3, the virtual value that each moment speed is calculated according to following formula：
T is the time of the output of continuous acquisition acceleration transducer in formula；
Step 4 crosses vehicle threshold value comparison with what is pre-set, if being wherein more than threshold value there are one the speed virtual value of axis
Thought vehicle.
The present invention provides a kind of very reliable methods for judging train and crossing vehicle.
Further, above-mentioned to judge that train is crossed in the method for vehicle：Further include acceleration transducer static state before step 1
Reference value setting procedure；The acceleration transducer Static reference value setting procedure includes：
The acceleration information of continuous acquisition T for a period of time judges whether equipment remains static, if quiet by calculating
Only state resurveys then using the average value of each self-acceleration of three axis in this time as Static reference value if not static
And judge, until being determined as stationary state.
Further, above-mentioned to judge that train is crossed in the method for vehicle：Stationary state is judged as follows：
The acceleration information of continuous acquisition T for a period of time, calculates the average acceleration of each axis, then finds out these acceleration
The standard deviation of each axis of degrees of data, if standard deviation is less than preset threshold value, judgement is currently stationary state, is otherwise nonstatic shape
State needs to re-start acquisition calculating and judge.
The present invention also provides a kind of vibration detection device, include and the ground on the mechanical part that track is connected or by track
The acceleration transducer of upper fixed installation；Further include
Sampling apparatus samples the acceleration of each axis of output of acceleration transducer with interval of delta t；
First computing device, first computing device calculate the speed of each axis as follows：
v1=v0+a1Δt
v2=v1+a2Δt
.
.
vn=vn-1+anΔt；
In formula：a1、a2…anThe acceleration that time Δt, 2 time Δts ... (n-1) time Δt, n time Δts detect respectively
Degree；v0For static velocity, v1、v2、…vn-1、vnThe meter of time Δt, 2 time Δts ... (n-1) time Δt, n time Δts respectively
The speed calculated；
Second computing device, second computing device calculate the dress of the virtual value of each moment speed according to following formula
It sets：
T is the time of the output of continuous acquisition acceleration transducer in formula；
Judgment means, the judgment means cross vehicle threshold value comparison with what is pre-set, if wherein there are one the speed of axis
Degree virtual value then thought vehicle more than threshold value.
The present invention is described in detail in the following with reference to the drawings and specific embodiments.
Description of the drawings
Fig. 1 is 1 vibration detection device structural schematic diagram of the embodiment of the present invention.
Fig. 2 is 1 collected Z axis accelerating curve of the embodiment of the present invention.
Fig. 3 is 1 speed virtual value curve of the embodiment of the present invention.
Fig. 4 and Fig. 5 is the application scenarios of 1 vibration detection device of the embodiment of the present invention.
Specific implementation mode
The present embodiment is that one kind providing better computational methods to determine whether crossing vehicle；This method is first automatic to calculate track
Then acceleration reference value in static state calculates collected acceleration information and Static reference value effective ginseng of speed
It examines value and is converted to speed virtual value, speed virtual value can accurately and effectively represent the vibrational energy of mechanical system, and more
The direct feel for meeting people can more accurately judge whether cross vehicle by it, improve the precision and stability of judgement, keep away
The case where having exempted from erroneous judgement, having failed to judge, and the interference that adjacent line track crosses vehicle can be distinguished；Automatic calculating staticaccelerator track reference value
Method can adapt to different installation requirements, improve the convenience and installation effectiveness of vibration testing equipment installation；This method is also
Providing multiple parameters can flexibly be debugged, to adapt to different working condition requirements.
As shown in Figure 1, ground of the vibration detection device of the present embodiment by a track or the Machinery Ministry being connected with track
Acceleration transducer is fixedly mounted on part, is then carried out by the output valve of three axis (X, Y, Z) exported to acceleration transducer
Processing, so that it may whether to be had train by the track, the vibration detection device in the present embodiment, the occasion used such as Fig. 4
Shown in Fig. 5, vibration detection device 2 is mounted on 1 side of track, is detected to the Oscillation Amplitude of track, is judged whether there is row
Vehicle passes through.It can also be mounted in goat 3, be contacted with track 1 by the mechanical structure of goat, detect the vibration of track 1.
In the present embodiment, judge train cross vehicle method it is as follows：
The Static reference value of acceleration transducer is previously set, realizes according to the following steps：
In the present embodiment, acceleration transducer installation site and Installation posture in vibration detection device are possible to different,
So the Static reference value (xRefVal, yRefVal, zRefVal) of each axle acceleration of acceleration transducer will be different；It is suitable
A variety of different installation requirements are answered, need to set Static reference value.
Set the mode of Static reference value：After each starting up of vibration detection device, continuous acquisition for a period of time T plus
Speed data judges whether equipment remains static, if stationary state, then respectively by three axis in this time by calculating
The average value of acceleration resurveys and judges if not static, until being determined as stationary state as Static reference value.
It is known as quiescent value this period and obtains the time, can be flexibly arranged by host computer.Here average value is a kind of arithmetic average,
If the acceleration point of collected X-axis in T time is a1,a2,a3...an, average value is
Interim, acceleration transducer stationary state determination method is as follows：
After each starting up of vibration detection device, the acceleration information of continuous acquisition T for a period of time calculates each axis
Then average acceleration finds out the standard deviation of each axis of these acceleration informations, if standard deviation is less than preset threshold value, judgement is worked as
Preceding is stationary state, is otherwise nonstatic state, needs to re-start acquisition calculating and judge.Here the calculation of standard deviation
It is：
First calculate average value aavg,
In the present embodiment, need to increase to why to get transducer dwell reference value：
Because the acceleration transducer used can sense acceleration of gravity, even if sensor does not generate vibration
The acceleration of gravity of a G can be exported；So in order to detect actual vibration acceleration value, need to eliminate gravity acceleration
Degree, be in the position of actual installation brief acceleration sensor and posture it is unknown, not necessarily horizontal fixed in position, and
Minor change in the position and posture that may lead to vibration detection device after Long-term Vibration, thus in device power or
Person needs to reacquire the acceleration reference value of each axis of acceleration transducer after running a period of time.
Cross the expression of vehicle vibration
In mechanical system, the physical quantity for characterizing system vibration has acceleration, speed and displacement.In many vibration test systems
In, due to being limited by environment and sensor mounting condition, displacement and speed are unable to measure, and are needed at this time by acceleration
Signal integration obtains speed, and speed is to reflect the ideal parameters of speed virtual value, and characterization is the energy vibrated；So in the world
Many vibration diagnosis standards are all using speed virtual value as discriminant parameter.
According to the relationship of acceleration and speed：
V=v0+at
Calculate the speed of three each sampled points of axis：
v1=v0+a1Δt
v2=v1+a2Δt
.
.
vn=vn-1+anΔt
The effective value calculating method of speed can be with reference current virtual value：The virtual value I of electric current is defined by fuel factor
, it is equal to the corresponding electric current of the identical heat of a direct current generation in same time.
The speed virtual value V of each axis is calculated with reference to above-mentioned formula：
Finally cross the judgement of vehicle
Vibration detection device acquires acceleration information and calculates the speed virtual value of each axis in this time in real time,
Then vehicle threshold value comparison is crossed with what is pre-set, thought vehicle if being more than wherein threshold value there are one the speed virtual value of axis.
It is accelerating curve for the oscillating curve that vibration detection device collects, such as Fig. 2, Fig. 3 is that speed virtual value is bent
Line；It can be seen that speed virtual value is largely focused between 30~40mm/s, if the adjacent line track of the track switch crosses vehicle disturbance velocity
Virtual value is 15mm/s, then crossing vehicle threshold value could be provided as 20mm/s or so, can avoid adjacent line track in this way and crosses the dry of vehicle
It disturbs, and can normally detect that this track crosses vehicle.
Claims (4)
1. a kind of method for judging train and crossing vehicle, is characterized in that：Ground in orbit or on the close-connected object in ground
Acceleration transducer is fixedly mounted, is collected by acceleration transducer and calculates speed after the acceleration value caused by vibrating and have
Valid value is come it is judged whether or not train process, includes the following steps：
Step 1, detected in real time using acceleration transducer ground or with the vibration on the close-connected object in ground, with interval delta
T samples the acceleration of each axis of output of acceleration transducer；
Step 2, the speed for calculating each axis as follows：
v1=v0+a1Δt
v2=v1+a2Δt
.
.
vn=vn-1+anΔt；
In formula：a1、a2…anThe acceleration that time Δt, 2 time Δts ... (n-1) time Δt, n time Δts detect respectively；v0
For static velocity, v1、v2、…vn-1、vnTime Δt, 2 time Δts ... (n-1) time Δt, n time Δts calculate respectively
The speed come；
Step 3, the virtual value that each moment speed is calculated according to following formula：
T is the time of the output of continuous acquisition acceleration transducer in formula；
Step 4 crosses vehicle threshold value comparison with what is pre-set, thinks if being more than wherein threshold value there are one the speed virtual value of axis
Cross vehicle.
2. the method according to claim 1 for judging train and crossing vehicle, it is characterised in that：Further include accelerating before step 1
Spend transducer dwell reference value setting procedure；The acceleration transducer Static reference value setting procedure includes：
The acceleration information of continuous acquisition T for a period of time judges whether equipment remains static, if static shape by calculating
State resurveys and sentences if not static then using the average value of each self-acceleration of three axis in this time as Static reference value
It is fixed, until being determined as stationary state.
3. the method according to claim 2 for judging train and crossing vehicle, it is characterised in that：Stationary state as follows into
Row judges：
The acceleration information of continuous acquisition T for a period of time, calculates the average acceleration of each axis, then finds out these and accelerates the number of degrees
According to the standard deviation of each axis, if standard deviation is less than preset threshold value, judgement is currently stationary state, is otherwise nonstatic state,
It needs to re-start acquisition calculating and judge.
4. a kind of vibration detection device, it is characterised in that：Including by track ground or with it is solid on the close-connected object in ground
The acceleration transducer of Dingan County's dress；Further include
Sampling apparatus samples the acceleration of each axis of output of acceleration transducer with interval of delta t；
First computing device, first computing device calculate the speed of each axis as follows：
v1=v0+a1Δt
v2=v1+a2Δt
.
.
vn=vn-1+anΔt；
In formula：a1、a2…anThe acceleration that time Δt, 2 time Δts ... (n-1) time Δt, n time Δts detect respectively；v0
For static velocity, v1、v2、…vn-1、vnTime Δt, 2 time Δts ... (n-1) time Δt, n time Δts calculate respectively
The speed come；
Second computing device, second computing device calculate the device of the virtual value of each moment speed according to following formula：
T is the time of the output of continuous acquisition acceleration transducer in formula；
Judgment means, the judgment means cross vehicle threshold value comparison with what is pre-set, if wherein there are one the speed of axis to have
Valid value then thought vehicle more than threshold value.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658005A (en) * | 2019-10-08 | 2020-01-07 | 西南交通大学 | Method for identifying rail corrugation diseases based on vehicle body acceleration |
Citations (4)
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| CN101439726A (en) * | 2007-11-22 | 2009-05-27 | 保定市天河电子技术有限公司 | Method for detecting train passage situation and system thereof |
| CN102343922A (en) * | 2011-07-21 | 2012-02-08 | 清华大学 | On-line monitoring system for vibration characteristics of rapid railway turnout based on wireless sensor network |
| CN203838879U (en) * | 2014-01-28 | 2014-09-17 | 浙江天地人科技有限公司 | Traffic flow detection apparatus |
| JP2015102329A (en) * | 2013-11-21 | 2015-06-04 | 東日本旅客鉄道株式会社 | Train information inferring method, and soundness evaluating method for bridges |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439726A (en) * | 2007-11-22 | 2009-05-27 | 保定市天河电子技术有限公司 | Method for detecting train passage situation and system thereof |
| CN102343922A (en) * | 2011-07-21 | 2012-02-08 | 清华大学 | On-line monitoring system for vibration characteristics of rapid railway turnout based on wireless sensor network |
| JP2015102329A (en) * | 2013-11-21 | 2015-06-04 | 東日本旅客鉄道株式会社 | Train information inferring method, and soundness evaluating method for bridges |
| CN203838879U (en) * | 2014-01-28 | 2014-09-17 | 浙江天地人科技有限公司 | Traffic flow detection apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110658005A (en) * | 2019-10-08 | 2020-01-07 | 西南交通大学 | Method for identifying rail corrugation diseases based on vehicle body acceleration |
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