CN109374317A - A kind of rail traffic vehicles locking or locking hidden failure on-line measuring device and its method - Google Patents
A kind of rail traffic vehicles locking or locking hidden failure on-line measuring device and its method Download PDFInfo
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- CN109374317A CN109374317A CN201811055102.8A CN201811055102A CN109374317A CN 109374317 A CN109374317 A CN 109374317A CN 201811055102 A CN201811055102 A CN 201811055102A CN 109374317 A CN109374317 A CN 109374317A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of rail traffic vehicles locking or locking hidden failure on-line measuring device and methods, this method comprises: a data collection steps, successively obtain new measurement data, including axis pulse frequency and axis impulse waveform data；Store the velocity wave form data in nearest a period of time；According to the vehicles inherent characteristics such as axis pulse frequency collected and wheel footpath, the number of teeth, gear ratio, the parameters such as calculating speed value, deceleration；According to the dead ship condition of vehicle, current vehicle speed value is stored to non-volatile memories or extension storage；According to vehicle locking state, by current vehicle speed Waveform storage to non-volatile memories or extension storage；Make the data collection steps, obtains new measurement data again.Detection compared with vehicle to locking failure, device detection period is shorter, condition is more sensitive, a degree of can detect in advance velocity anomaly hidden danger.
Description
Technical field
The present invention relates to rail traffic vehicle braking field, especially a kind of rail traffic vehicles locking or the event of locking hidden danger
Hinder on-line measuring device and its method.
Background technique
For the operational safety for ensuring rail traffic vehicles, many self-diagnostic functions of train configuration, including braking system
Axis locking fault diagnosis functions.
A lot of axis locking detection wrong report failures have occurred in CRH2 EMUs during operation, cause the operation evening of train
Point.Through analyzing, velocity sensor, speed signal transmission path, the failure of brake monitor (hereinafter referred to as BCU) are possible to lead
The generation of locking failure is caused, is positioning analysis failure cause, need to further analyze the phases such as fault message, velocity amplitude, velocity wave form
Close data.Through ground simulation test as a result, it has been found that, the distortion of velocity sensor output waveform, transmission path the equal energy of short interruptions
Trigger locking failure.
CRH2 EMUs locking failure occur the moment, BCU can store current time for the previous period, afterwards a period of time
Braking-distance figures, including fault message and velocity amplitude.But the deficiency of BCU institute storing data is: stored fault data length
It is limited, the number of stoppages is limited, fault data is filled with rear old fault data and will be covered by new fault data, and can not store
Velocity wave form.Occur under locking fault condition therefore, it is impossible to fully meet, to braking-distance figures during positioning analysis failure cause
Analysis requirement.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides one kind can effectively track record vehicular traffic sending out
When raw locking failure or having potential locking hidden danger for the previous period with the velocity information in rear a period of time, further to divide
Analysing failure and improve offer may.Rail traffic vehicles locking or locking hidden failure on-line measuring device and its method.
The purpose of the present invention is achieved through the following technical solutions.
A kind of rail traffic vehicles locking or locking hidden failure on-line measuring device characterized by comprising data are adopted
Storage, buffer, calculator, velocity amplitude storage control, velocity wave form storage control, locking fault detector；
Data collector, for successively obtaining the measurement data of new velocity pulse, velocity wave form；
Buffer, buffer are connected with data collector, are surveyed for storing data collector in nearest a period of time
The velocity wave form data of amount；
Calculator, calculator are connected with data collector, for according to data collector velocity pulse collected, speed
Spend Wave data, the parameters such as calculating speed value, speed difference, deceleration；
Velocity amplitude storage control is stored for controlling velocity amplitude to non-volatile memories or extension storage；
Velocity wave form storage control is stored for controlling velocity wave form to non-volatile memories or extension storage；
Locking fault detector is shown by way of indicator light for locking or locking hidden failure, the speed wave
Shape storage control is connected with locking fault detector；
Also there is a vehicle stopped state to judge comparator between the calculator and the velocity amplitude storage control,
Also there is a locking state to judge comparator, the calculator between the buffer and the velocity wave form storage control
Judge that comparator is connected with locking state；
The vehicle stopped state comparator, the velocity amplitude for being calculated according to calculator judge vehicle for dead ship condition
Or vehicle is non-dead ship condition；When vehicle is non-dead ship condition, the velocity amplitude storage control is effective, by the calculator
The velocity amplitude of calculating is persistently written to non-volatile memories or extension storage；When vehicle is dead ship condition, the velocity amplitude is deposited
It is invalid to store up controller, stops writing speed Value Data；
The locking state judges comparator, for according to velocity amplitude, speed difference, deceleration value judge vehicle whether be
Locking or locking hidden danger state；When vehicle is locking or locking hidden danger state, the velocity wave form storage control is effective, opens
Dynamic locking fault detector, the velocity wave form data in the buffer are persistently written to non-volatile memories or extension and are deposited
Storage；When vehicle is non-locking and locking hidden danger state, the velocity wave form storage control is invalid, speed in the buffer
Waveform is not written into non-volatile memories or extension storage.
The buffer then selects execution described when locking or locking hidden failure repeatedly occur in a period of time
Wave data time segment in buffer is repeatedly written to non-volatile memories or extension storage；
The buffer, when locking occurring or when locking hidden failure, selection executes will be in the buffer when the last period
Between velocity wave form be written to non-volatile memories or extension storage, and continue write-in a period of time；
The locking fault detector starts locking fault detector after locking or the generation of locking hidden failure, with
The form of indicator light is always on, and when locking or the recovery of locking hidden failure, indicator light is still always on, until detection device powers off
Or it is resetted after re-powering.
A kind of rail traffic vehicles locking failure on-line detecting method, which is characterized in that including following operating procedure:
A) data collection steps, new measurement data is successively obtained by data collector, and the measurement data includes speed
Spend pulse and velocity wave form data；
B) buffer updates step, stores velocity pulse and velocity wave form data in nearest a period of time to buffer,
Its velocity pulse and velocity wave form data are constantly updated over time；
C) step is calculated, calculator is according to data collector vehicle inherent characteristic calculating speed value collected, speed difference
Value, deceleration, the intrinsic characteristic of the vehicle includes axis pulse frequency and wheel footpath, the number of teeth, gear ratio；
D) velocity amplitude storing step when at least one velocity amplitude of current vehicle is not zero, judges vehicle for non-parking shape
The velocity amplitude that the calculator calculates persistently is written to non-volatile memories or extension storage state；Current vehicle whole speed
When value is zero, judge vehicle for dead ship condition；
E) velocity wave form storing step, all speed differences of current vehicle are greater than certain value or deceleration is greater than certain value,
And continue for some time, judge that for locking or locking hidden danger state, the velocity wave form data in the buffer are continued for vehicle
It is written to non-volatile memories or extension storage；Otherwise, vehicle is non-locking and locking hidden danger state；
F) locking malfunction coefficient step, when vehicle is judged as locking or locking hidden danger state, locking fault detector is logical
The mode for crossing indicator light shows locking or locking hidden failure.
Vehicle stopped state judgment step there are one between the calculating step and the velocity amplitude storing step,
There are one locking state judgment steps between the calculating step and the velocity wave form storing step；The vehicle parking shape
State judgment step, vehicle are non-dead ship condition, and the velocity amplitude storage control is effective, and selection executes will be in the calculator
Velocity amplitude is persistently written to non-volatile memories or extension storage, and otherwise, the velocity amplitude storage control is invalid, and selection is held
Row stops writing speed Value Data；The locking state judgment step, vehicle are locking or locking hidden danger state, the speed wave
Shape storage control is effective, and selection is executed velocity wave form in the buffer to be written to non-volatile memories or extension and be deposited
Storage, output locking fault detector lamp are always on, and otherwise, the velocity wave form storage control is invalid, and selection executes the caching
Velocity wave form in device is not written into non-volatile memories or extension storage.
The calculating step calculates period and the frequency of pulse according to data collector speed pulse data collected,
In conjunction with the parameters such as wheel footpath, the number of teeth, gear ratio, calculating speed value；
The calculating step takes all axle speed angle value of a certain moment current vehicle according to calculator velocity amplitude calculated
Maxima and minima, its speed difference is obtained after subtracting each other；
The calculating step takes start time a period of time at the end of respectively according to calculator velocity amplitude calculated
The velocity amplitude at quarter obtains divided by time interval length the average retardation rate in this period after subtracting each other.
It compared with the prior art, can be in rail traffic vehicles the present invention has the advantages that by the on-line measuring device
After axis locking failure occurs or has potential locking hidden danger, is prompted after sale by locking fault detector or technical staff's vehicle has been sent out
Raw locking failure or locking hidden danger a degree of can detect in advance velocity anomaly hidden danger.Meanwhile it acquiring and to store vehicle non-
The velocity amplitude of stationary state acquires and stores locking to non-volatile memories or extension storage or the moment occurs for locking hidden failure
It is into one for the previous period with the velocity wave form data in rear a period of time to specified address non-volatile memories or extension storage
It walks positioning analysis vehicle locking failure cause and the direction reference of data supporting and possible cause is provided.
Detailed description of the invention
Fig. 1 is shown selected by a kind of rail traffic vehicles locking of the invention or locking hidden failure on-line measuring device
The diagram showing the structure of embodiment.
Fig. 2 show a kind of rail traffic vehicles locking or locking hidden failure on-line measuring device described in embodiment
The diagram showing the structure of processor 103.
Fig. 3 show a kind of rail traffic vehicles locking or locking hidden failure on-line measuring device described in embodiment
The step explanatory diagram of dynamic measuring data real-time monitoring step 300.
Fig. 4 show a kind of rail traffic vehicles locking or locking hidden failure on-line measuring device described in embodiment
Velocity amplitude off-line data curve synoptic diagram.
Fig. 5 show a kind of rail traffic vehicles locking or locking hidden failure on-line measuring device described in embodiment
Velocity wave form off-line data curve synoptic diagram.
Specific embodiment
With reference to the accompanying drawings of the specification and specific embodiment, the present invention is described in detail.
With reference to Fig. 1, embodiment selects the detection device 100 with input interface 101, communication port 102, and one has
BCU110 and one of output interface 111 has the computer 120 of communication port 121.
Computer 120 is laptop, can be used to read, analyze, showing, storing data collected.
As an example, the computer 120 in the present embodiment can also select calculating of the other types with communication port
Machine is replaced.
In the present embodiment, communication port 102,121 is Ethernet interface.
As an example, according to different needs of applying, computer 120 and detection device 100 in the present embodiment
It can be connected with each other by other kinds of interface, such as USB, 3G/4G/5G, WIFI, bluetooth, infrared, serial ports, parallel port type
Interface.
BCU110 is brake monitor, is the interface source of detected signal.
In the present embodiment, output interface 111, input interface 101 are hardwire interface, including power cable and signal wire
Cable.
As an example, needs are applied according to different, the detection device 100 and BCU110 in the present embodiment can also be with
It is connected with each other by other kinds of interface, such as Ethernet, USB, 3G/4G/5G, WIFI, bluetooth, infrared, serial ports, parallel port class
The interface of type.
In the present embodiment, detection device 100 includes the processing of the communication port 102, one of input interface 101, one
The non-volatile memories 105 of indicator light 104, one of device 103, one and an extension storage 106.
In the present embodiment, the memory capacity of non-volatile memories 105 is 8G.
As an example, the memory capacity of the non-volatile memories 105 in the present embodiment may not be 8G, Ke Yigeng
Height, can also be lower, such as 16G or 4G.
In the present embodiment, the storaging medium of extension storage 106 is SD card.
As an example, the extension storage 106 in the present embodiment can also use other media, such as TF card, USB flash disk,
Hard disk etc..
In the present embodiment, the memory capacity of extension storage 106 is 32G.
As an example, the memory capacity of extension storage 106 may not be 32G, can be higher, can also be lower,
Such as 64G or 16G.
In the present embodiment, in conjunction with reference Fig. 2, the processor 103 of detection device 100 includes:
One data collector 201, for successively obtaining the measurement data such as new velocity pulse, velocity wave form；
One buffer 202, for storing the speed wave figurate number obtained in a period of time recently from data collector 201
According to；
One calculator 203, the speed pulse data for being obtained from data collector 201, calculating speed value, speed difference
The parameters such as value, deceleration；
Whether one dead ship condition comparator 204, the velocity amplitude for being calculated according to calculator 203 judge vehicle
For dead ship condition, when vehicle is non-dead ship condition, velocity amplitude storage control 206 is effective, otherwise, velocity amplitude storage control
206 is invalid；
One locking status comparator 205, velocity amplitude, deceleration judgement for being calculated according to calculator 203
Whether vehicle is locking or locking hidden danger state, when vehicle is locking or locking hidden danger state, velocity wave form storage control 207
Effectively, otherwise, velocity wave form storage control 207 is invalid；
One velocity amplitude storage control 206 is stored for controlling velocity amplitude to non-volatile memories 105 or extension storage
106；
One velocity wave form storage control 207 is stored for controlling velocity wave form to non-volatile memories 105 or extension
Storage 106；
One locking malfunction coefficient controller 208, for controlling locking or locking hidden failure in a manner of indicator light 104
Display.
In the present embodiment, in conjunction with reference Fig. 3, dynamic measuring data real-time monitoring step 300 includes:
One data collection steps 301 successively obtains new measurement data, including axis pulse frequency and axis impulse wave figurate number
According to；
One buffer updates step 302, stores in nearest a period of time speed wave collected in data collector 201
Graphic data constantly updates its velocity wave form data over time；
One calculating step 303, according to axis pulse frequency collected in institute's data collector 301 and wheel footpath, the number of teeth, tooth
The vehicles inherent characteristics such as wheel ratio, the parameters such as calculating speed value, speed difference, deceleration；
One dead ship condition judgment step 304, according to the velocity amplitude calculated result of calculator 203, current vehicle is at least
When one axle speed angle value is not zero, judge that vehicle for non-dead ship condition, otherwise, judges vehicle for dead ship condition；
One locking state judgment step 305, according to the velocity amplitude, speed difference, deceleration calculation of calculator 203 as a result,
All axle speed differences of current vehicle are greater than certain value or deceleration value is greater than certain value and continues for some time, and judge vehicle
For locking or locking hidden danger state, otherwise, vehicle is non-locking and locking hidden danger state；
One velocity amplitude storing step 306, according to the judging result of dead ship condition judgment step 304, vehicle is non-parking
State, effectively, selection executes and the velocity amplitude in calculator 203 is persistently written to non-volatile velocity amplitude storage control 206
Storage 105 or extension storage 106, otherwise, velocity amplitude storage control 206 are invalid, and selection, which executes, stops writing speed Value Data；
One velocity wave form storing step 307, according to the judging result of locking state judgment step 305, vehicle is locking
Or locking hidden danger state, effectively, selection is executed velocity wave form in the buffer 202 velocity wave form storage control 207
Write-in is to non-volatile memories 105 or extension storage 106, and locking malfunction coefficient controller 208 effectively, otherwise, deposit by velocity wave form
Store up controller 207 in vain, the velocity wave form that selection executes in the buffer 202 is not written into non-volatile memories 105 or expands
Exhibition storage 106；
One locking malfunction coefficient step 308, according to the judging result of locking state judgment step 305, vehicle is locking
Or locking hidden danger state, it is shown by way of indicator light 104 for locking or locking hidden failure, does not otherwise change indicator light
104 display state；
One return step 309, makes the data collection steps, obtains new measurement data again.
In the present embodiment:
Calculate in step 303, according to the speed pulse data collected of data collector 201, calculate period of pulse with
Frequency, in conjunction with the parameters such as wheel footpath, the number of teeth, gear ratio, calculating speed value；
It calculates in step 303, according to the velocity amplitude calculated of calculator 203, takes a certain all axle speeds of moment current vehicle
The maxima and minima of angle value obtains its speed difference after subtracting each other；
It calculates in step 303, according to the velocity amplitude calculated of calculator 203, takes start time a period of time at the end of
The velocity amplitude at quarter obtains divided by the time average retardation rate in this period after subtracting each other.
In conjunction with reference Fig. 3, dynamic measuring data real-time monitoring step 300 is described further as follows:
In the present embodiment, acquisition step 301, the sample frequency of velocity amplitude are 500S/s, the sample frequency of velocity wave form
For 50kS/s.
As an example, according to different application demands, the sample frequency of velocity amplitude may not be 500S/s, can be with
It is higher or lower, such as 1kS/s or 100S/s.
As an example, according to different application demands, the sample frequency of velocity wave form may not be 50kS/s, can
With higher or lower, such as 100kS/s or 1kS/s.
In the present embodiment, buffer updates step 302, and the buffer time span of velocity wave form is 3min, point 3 texts
Part stores respectively, each file 1min.
As an example, according to different application demands, the buffer time span of velocity wave form may not be
3min, can be longer or shorter, such as 5min or 1min.
As an example, according to different application demands, the quantity of documents in the buffer of velocity wave form can not also
It is 3, can be more or less, such as 5 or 1.
In the present embodiment, step 303 is calculated, it is more using calculating according to the velocity pulse collected of data collector 201
The period of a pulse carrys out calculating speed value, and the quantity of the pulse can adaptively be adjusted according to the variation of sample frequency.
As an example, according to different applications, the calculating of velocity amplitude can also use other methods, such as frequency measurement
Method or cycle test method.
In the present embodiment, step 303 is calculated, wheel footpath used by calculating velocity amplitude is 860mm, the number of teeth 72, tooth
Wheel ratio is 3.0: 1, its calculation formula is:
Wherein:
V is current axis velocity amplitude, unit km/h；
D is current wheel diameter, unit mm；
F is current wheel velocity frequency, unit Hz；
Z is the measure speed gears number of teeth, and unit is dimensionless；
I is current wheel drive gear ratio, and unit is dimensionless.
For example, bringing formula into, it is 45.0km/h that velocity amplitude, which can be calculated, when speed input frequency is 1kHz.
As an example, according to different vehicle features, wheel footpath value may not be 860mm, can also more greatly or more
It is small, such as 920mm or 840mm.
As an example, according to different vehicle features, the number of teeth may not be 72, can also be greater or lesser, such as
80 or 60.
As an example, according to different vehicle features, gear ratio may not be 3.0: 1, can also more greatly or more
It is small, such as 3.5: 1 or 2.0: 1.
In the present embodiment, step 303 is calculated, formula used by calculating speed difference are as follows:
Δ v=vmax-vmin
Wherein:
Difference of the Δ v between the multiple axle speed angle value of current vehicle, unit km/h；
vmaxFor the maximum value in multiple axle speed angle value, unit km/h；
vminFor the minimum value in multiple axle speed angle value, unit km/h.
For example, the number of axle of current vehicle is 4,4 axle speeds of certain moment current vehicle are respectively shown in subordinate list 1.
Subordinate list 1
| Serial number | Title | Numerical value |
| 1 | 3 vehicle, 1 axle speed angle value | 102.3km/h |
| 2 | 3 vehicle, 2 axle speed angle value | 109.6km/h |
| 3 | 3 vehicle, 3 axle speed angle value | 95.5km/h |
| 4 | 3 vehicle, 4 axle speed angle value | 120.1km/h |
It follows that vmax=120.1km/h, vmin=95.5km/h, Δ v=24.6km/h.
As an example, according to different applications and vehicle inherent characteristic, the number of axle of current vehicle can also be with
It is not 4, can also be more or less, such as 8 or 2；
As an example, according to different vehicle features, each axle speed angle value used in calculating may be other
Value.
In the present embodiment, step 303 is calculated, formula used by calculating average retardation rate are as follows:
For average retardation rate, unit km/h/s；
v2To calculate finish time, unit km/h/s；
v1To calculate start time, unit km/h/s；
Δ t is to calculate time span, unit s.
For example, the speed value information of certain start time a period of time and finish time are as shown in subordinate list 2.
Subordinate list 2
It follows that Δ t=0.1s,
As an example, according to different applications, calculating time span may not be 0.1s, can also be more
Or it is less, such as 0.2s or 0.05s；
As an example, according to different vehicle features, used in calculating at the beginning of and finish time speed
Angle value may be other values.
In the present embodiment, dead ship condition judgment step 304, the number of axle of current vehicle are 4, and low-speed detection is by speed
Angle value is 0.25km/h, according to the current vehicle speed angle value that calculating step 303 is calculated, the sum of cumulative 4 axle speeds, if
It is less than 0.25km/h*4=1km/h, then is judged as dead ship condition, is otherwise non-dead ship condition.
As an example, according to different applications and vehicle inherent characteristic, the number of axle of current vehicle can also be with
It is not 4, can also be more or less, such as 8 or 2；
As an example, according to different applications, low-speed detection may not be 0.25km/h by velocity amplitude,
Can also be greater or lesser, such as 0.5km/h or 0.1km/h.
In the present embodiment, locking or locking hidden danger state judgment step 305, the number of axle of current vehicle are 4, locking
Or locking hidden danger judges speed difference threshold value for 10km/h, locking or locking hidden danger judge deceleration threshold for 5km/h, according to calculating
Speed difference that step 303 is calculated, deceleration value are greater than speed difference threshold value, deceleration threshold and duration threshold
More than or equal to 1s, then it is judged as locking or locking hidden danger state, otherwise, is judged as non-locking and locking hidden danger state.
As an example, according to different applications and vehicle inherent characteristic, the number of axle of current vehicle can also be with
It is not 4, can also be more or less, such as 8 or 2；
As an example, speed may also be only according to different applications, locking or locking hidden danger Rule of judgment
Poor threshold value, or only deceleration threshold, or it is not limited to speed difference threshold value, deceleration threshold, threshold speed can also be combined；
As an example, according to different applications, speed difference threshold value may not be 10km/h, can also be bigger
Or it is smaller, such as 30km/h or 3km/h；
As an example, according to different applications, deceleration threshold may not be 5km/h, can also be bigger
Or it is smaller, such as 30km/h or 3km/h；
As an example, according to different applications, duration threshold may not be 1s, can also it is bigger or
It is smaller, such as 5s or 0.5s.
In the present embodiment, velocity amplitude storing step 306, the time span for presetting single file is that (data capacity is about by 1h
28M), presetting total storage time is 288h (data capacity about 7.9G), when velocity amplitude data storage capacity is greater than 7.9G, is deleted
The speed Value Data (data capacity about 1.4G) of early stage 48h keeps the speed Value Data for storing nearest 240h.
As an example, according to different applications, the time span of preset single file may not be 1h,
Can be longer or shorter, such as 2h or 0.5h；
As an example, according to different applications, preset total storage time may not be 288h, Ke Yigeng
It is long or shorter, such as 336h or 240h；
As an example, according to different applications, the preset time for deleting early time data may not be
48h, can be longer or shorter, such as 72h or for 24 hours；
As an example, according to different applications, preset nearest velocity amplitude storage time may not be
240h, can be longer or shorter, such as or 288h or 192h.
In the present embodiment, velocity wave form storing step 307, according to the storage file of 3min preset in buffer 202
(data capacity about 69M), presets locking or locking hidden failure data total degree is 240 times (data capacity about 16.2G), works as speed
When spending Wave data memory capacity greater than 16.2G, (data capacity is about for deletion 40 lockings of early stage or locking hidden failure data
2.7G), it keeps storing nearest 200 velocity wave form data.
As an example, according to different applications, preset locking or locking hidden failure data total degree
It can not be 240 times, can be more or less, such as 360 times or 120 times；
As an example, according to different applications, the preset number for deleting early time data may not be 40
It is secondary, can be more or less, such as 80 times or 20 times；
As an example, according to different applications, preset nearest velocity wave form storage number may not be
200 times, can be more or less, such as 320 times or 80 times.
In the present embodiment, locking malfunction coefficient step 308, vehicle is locking or locking hidden danger state, indicator light 104 are
It is always on.
As an example, according to different applications, 208 control instructions lamp 104 of locking malfunction coefficient controller
It can not be the state of being always on, or other control modes, such as flashing mode.
In the present embodiment, detection device is downloaded communication port 102,121 in download step 310 in a manner of Ethernet
Data in 100 in non-volatile memories 105 or extension storage 106 analyze velocity amplitude and waveform to local computer 120
Data, Fig. 4 are that the curve for carrying out velocity amplitude by local computer 120 is shown, Fig. 5 is to carry out speed by local computer 120
The curve of degree waveform is shown.
Illustrate as example, according to different applications, curve title and numerical value in Fig. 4 and Fig. 5 may be other
Value.
As an example, according to different applications, extension storage 106 can also be taken out, passes through the side of card reader
Formula reads the data in extension storage 106, and this method is more convenient, more efficient, can greatly save the field operation time after sale,
But the data in extension storage 106 only can be read.When by velocity amplitude storage control 206 and velocity wave form storage control 207
When storage address is disposed as extension storage 106, this method is more excellent, and field operation is stronger.
Claims (7)
1. a kind of rail traffic vehicles locking or locking hidden failure on-line measuring device characterized by comprising data acquisition
Device, buffer, calculator, velocity amplitude storage control, velocity wave form storage control, locking fault detector:
Data collector, for successively obtaining the measurement data of new velocity pulse, velocity wave form；
Buffer, buffer are connected with data collector, for storing in nearest a period of time measured by data collector
Velocity wave form data；
Calculator, calculator are connected with data collector, for according to data collector speed pulse data collected, meter
Calculate the parameters such as velocity amplitude, speed difference, deceleration；
Velocity amplitude storage control is stored for controlling velocity amplitude to non-volatile memories or extension storage；
Velocity wave form storage control is stored for controlling velocity wave form to non-volatile memories or extension storage；
Locking fault detector is deposited by way of indicator light for locking or locking hidden danger status display, the velocity wave form
Storage controller is connected with locking fault detector；
Also there is a vehicle stopped state to judge comparator between the calculator and the velocity amplitude storage control, it is described
Also there is a locking state judge comparator between buffer and the velocity wave form storage control, the calculator with armful
Death situation state judges that comparator is connected；
The vehicle stopped state comparator, the velocity amplitude for being calculated according to calculator judge vehicle for dead ship condition or vehicle
Be non-dead ship condition；When vehicle is non-dead ship condition, the velocity amplitude storage control is effective, and the calculator is calculated
Velocity amplitude be persistently written to non-volatile memories or extension storage；When vehicle is dead ship condition, the velocity amplitude storage control
Device processed is invalid, stops writing speed Value Data；
The locking state judges comparator, for judging whether vehicle is locking according to velocity amplitude, speed difference, deceleration value
Or locking hidden danger state；When vehicle is locking or locking hidden danger state, the velocity wave form storage control is effective, and starting is embraced
Velocity wave form data in the buffer are persistently written to non-volatile memories or extension storage dead fault detector；When
When vehicle is non-locking and locking hidden danger state, the velocity wave form storage control is invalid, velocity wave form in the buffer
It is not written into non-volatile memories or extension storage.
2. a kind of rail traffic vehicles locking according to claim 1 or locking hidden failure on-line measuring device, special
Sign is: the buffer, and when locking or locking hidden failure repeatedly occur in a period of time, then selecting to execute described will delay
Wave data time segment in storage is repeatedly written to non-volatile memories or extension storage.
3. a kind of rail traffic vehicles locking according to claim 1 or 2 or locking hidden failure on-line measuring device,
Be characterized in that: the buffer, when locking occurring or when locking hidden failure, selection executes will be in the buffer when the last period
Between velocity wave form be written to non-volatile memories or extension storage, and continue write-in a period of time.
4. a kind of rail traffic vehicles locking according to claim 3 or locking hidden failure on-line measuring device, special
Sign is: the locking fault detector, after locking or the generation of locking hidden failure, starts locking fault detector, with
The form of indicator light is always on, and when locking or the recovery of locking hidden failure, indicator light is still always on, until detection device powers off
Or it is resetted after re-powering.
5. a kind of rail traffic vehicles locking failure on-line detecting method, which is characterized in that including following operating procedure:
A) data collection steps, new measurement data is successively obtained by data collector, and the measurement data includes speed arteries and veins
Punching and velocity wave form data；
B) buffer updates step, stores velocity pulse and velocity wave form data in nearest a period of time to buffer, with
Its velocity pulse and velocity wave form data are constantly updated in the passage of time；
C) calculate step, calculator according to data collector vehicle inherent characteristic calculating speed value collected, speed difference, subtract
Speed, the intrinsic characteristic of the vehicle include axis pulse frequency and wheel footpath, the number of teeth, gear ratio；
D) velocity amplitude storing step when at least one velocity amplitude of current vehicle is not zero, judges that vehicle, will for non-dead ship condition
The velocity amplitude that the calculator calculates persistently is written to non-volatile memories or extension storage；Current vehicle whole velocity amplitude is zero
When, judge vehicle for dead ship condition；
E) velocity wave form storing step, all speed differences of current vehicle are greater than certain value or deceleration is greater than certain value, and hold
Continuous a period of time, judge that for locking or locking hidden danger state, the velocity wave form data in the buffer are persistently written for vehicle
To non-volatile memories or extension storage；Otherwise, vehicle is non-locking state；
F) locking malfunction coefficient step, when vehicle is judged as locking or locking hidden danger state, locking fault detector passes through finger
Show that the mode of lamp shows locking or locking hidden failure.
6. a kind of rail traffic vehicles locking failure on-line detecting method according to claim 5, it is characterised in that:
There are one vehicle stopped state judgment steps between the calculating step and the velocity amplitude storing step, described
Locking state judgment step there are one calculating between step and the velocity wave form storing step；The vehicle stopped state is sentenced
Disconnected step, vehicle are non-dead ship condition, and the velocity amplitude storage control is effective, and selection is executed the speed in the calculator
The lasting write-in of value is to non-volatile memories or extension storage, and otherwise, the velocity amplitude storage control is invalid, and selection, which executes, to stop
Only writing speed Value Data；The locking state judgment step, vehicle are that locking or locking hidden danger state, the velocity wave form are deposited
It is effective to store up controller, selection executes and velocity wave form in the buffer is written to non-volatile memories or extension storage, defeated
Locking fault detector lamp is always on out, and otherwise, the velocity wave form storage control is invalid, and selection executes in the buffer
Velocity wave form is not written into non-volatile memories or extension storage.
7. a kind of rail traffic vehicles locking failure on-line detecting method according to claim 5, it is characterised in that:
The calculating step calculates period and the frequency of pulse according to data collector speed pulse data collected, in conjunction with
The parameters such as wheel footpath, the number of teeth, gear ratio, calculating speed value；
The calculating step takes all axle speed angle value of a certain moment current vehicle most according to calculator velocity amplitude calculated
Big value and minimum value, obtain its speed difference after subtracting each other；
The calculating step takes start time a period of time and finish time according to calculator velocity amplitude calculated respectively
Velocity amplitude obtains divided by time interval length the average retardation rate in this period after subtracting each other.
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| CN201811055102.8A CN109374317B (en) | 2018-09-10 | 2018-09-10 | Rail transit vehicle locking or locking hidden danger fault online detection device and method thereof |
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