CN208795240U - A kind of rail traffic range-measurement system - Google Patents
A kind of rail traffic range-measurement system Download PDFInfo
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- CN208795240U CN208795240U CN201821419121.XU CN201821419121U CN208795240U CN 208795240 U CN208795240 U CN 208795240U CN 201821419121 U CN201821419121 U CN 201821419121U CN 208795240 U CN208795240 U CN 208795240U
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Abstract
The utility model discloses a kind of rail traffic range-measurement systems, the system includes the range finder module being mounted in railcar, RFID controller in orbit and multiple RFID label tags are installed, multiple RFID label tags are installed in orbit with certain spacing, multiple RFID label tags and RFID controller are electrically connected, range finder module and RFID label tag wireless telecommunications.The utility model is during use, RFID controller can be according to the ranging information in RFID label tag by the position real-time update track of railcar, subsequent railcar can also calculate at a distance from front truck in real time according to the ranging information in RFID label tag, it is wire communication between RFID label tag and RFID controller, it is the wireless telecommunications of short distance between RFID label tag and range finder module, all there is very high reliability.The distance measured in this way is used to control the speed of railcar, and the risk of railcar collision can be effectively reduced, and improves safety, convenient for promoting the use of.
Description
Technical field
The utility model relates to technical field of rail traffic more particularly to a kind of rail traffic range-measurement systems.
Background technique
Traditional Rail Transit System, such as train, high-speed rail, subway, light rail, magnetic suspension, feature are all train bicycle fortune
Amount is big, train flow is small.These Rail Transit Systems generally pass through location technology (such as: odometer, track circuit, beacon,
Gap waveguide, cross cable, radio spread spectrum communication) position is obtained, control centre is obtained by way of wired or wireless communication
The absolute position of train, and calculate train at a distance from the vehicle of front and back automatically controls train driving according to this.These distance measuring methods are real
When property is poor, precision is low, anti-interference ability is weak, so the runing time interval of ordinary circumstance Train is generally at 2 minutes or more.?
In the big full-automatic driving individual's Rail Transit System of the small freight volume of bicycle, vehicle flowrate, vehicle track running time interval is small, spacing
It is short, if controlling railcar traveling by the way of traditional, very big collision risk is just had, it is very dangerous.As it can be seen that in real time
High-precision, the railcar range-measurement system of strong anti-interference ability have very big application prospect in personal field of track traffic.
Utility model content
In view of the above drawbacks of the prior art, the technical problem to be solved by the utility model is to provide a kind of friendships of track
Logical range-measurement system, so as to solve the deficiencies in the prior art.
To achieve the above object, the utility model provides a kind of rail traffic range-measurement system, including is mounted on railcar
On range finder module, RFID controller in orbit and multiple RFID label tags are installed, the multiple RFID label tag is with certain
Spacing is installed in orbit, and the multiple RFID label tag and RFID controller are electrically connected, and RFID controller is for updating RFID
Ranging information in label；The range finder module and RFID label tag wireless telecommunications, range finder module is for reading in RFID label tag
Ranging information, and the distance between two vehicles on track are calculated according to the ranging information.
A kind of above-mentioned rail traffic range-measurement system, the spacing between RFID label tag that the track side is installed are equal.
A kind of above-mentioned rail traffic range-measurement system, the RFID label tag space between each other that the track side is installed is d, institute
The communication distance for stating range finder module and RFID label tag is D, and D is less than d.
The utility model provides a kind of rail traffic distance measuring method simultaneously, comprising the following steps:
When railcar passes through RFID label tag on straight way, range finder module reads the ranging information n in the RFID label tag；
The RFID label tag is issued to RFID controller updates request；
RFID controller receives the update request of RFID label tag sending, and successively updates the RFID label tag and the railcar
The ranging information in N number of RFID label tag passed through before be N, N-1, N-2 ... 2,1,0；Range finder module is according to the ranging read
Information n calculates the railcar and front truck distance S, if n ≠ 0, S=(N-n) * d, if n=0, S > (N-1) * d；N is positive
Integer, n N, N-1 ... one in 2,1,0.
In more optimized scheme, in the update request for receiving RFID label tag sending, record issues RFID controller
Update the number of the RIFD label of request；
The ranging information in N number of RFID label tag that RFID controller passes through before updating the RFID label tag and the railcar
When, by the RIFD label number with by RFID label tag to be updated it is upper once be updated when issue update request RFID
The number of label compares, if the number of the RFID label tag in track Chinese herbaceous peony into the opposite direction in direction, RFID controller executes
Operation is updated, otherwise RFID controller, which is ignored, this time updates request.
In more optimized scheme, when railcar enters simultaneously road junction, from the distance L entered and before road junction1=n1* d to and road
Between distance N*d after mouthful, railcar by the RFID label tag in the region, RFID controller update the RFID label tag and
When ranging information in the N number of RFID label tag passed through before the railcar, equivalent position on two branch roads will be updated simultaneously
Ranging information in RFID label tag, so that the ranging information on two branch roads in the RFID label tag of equivalent position is consistent, n1
Greater than N.Further, if in distance, simultaneously road junction distance is all S to the railcar on two branch roads1=Δ1* just bump against at d, then
By the L1=n1* d is changed to L1'=n1*d+S1, and the distance N*d after road junction is changed to N*d-S1.By aforesaid operations,
Car to car impact can be further avoided, the reliability of this method is improved.
In more optimized scheme, entering at the N*d of fork in the road to the L after fork in the road2=n2* between d, each
There are two ranging informations, respectively n for RFID label tag toolLWith nR, nLIndicate left side turnout range information, nRIndicate right side turnout away from
From information；
If railcar branch road to the left travels, railcar is entered at the N*d of fork in the road to straight between fork in the road
RFID label tag on road, RFID controller only update nL, for the L after fork in the road to fork in the road2=n2* the left side trouble between d
The RFID label tag of road, RFID controller update n simultaneouslyLAnd nRIt is consistent；
If branch road travels railcar to the right, railcar is entered at the N*d of fork in the road to straight between fork in the road
RFID label tag on road, RFID controller only update nR, for the L after fork in the road to fork in the road2=n2* the right side trouble between d
The RFID label tag of road, RFID controller update n simultaneouslyLAnd nRIt is consistent；The range of N*d distance before rear car enters fork
When interior, if rear car will travel to the left, according to the n receivedRValue judge whether the front truck toward right travel comes into branch road,
If the front truck toward right travel does not enter into branch road, n is takenLWith nRIn biggish value calculate at a distance from front truck, if toward right travel
Front truck come into branch road, then use nLTo calculate at a distance from front truck；If rear car will be to right travel, according to what is received
nLThe turn left front truck of traveling of value judgement whether come into branch road, if the front truck for traveling of turning left does not enter into branch road, take nLWith
nRIn biggish value calculate at a distance from front truck, if the front truck for traveling of turning left comes into branch road, use nRTo calculate with before
The distance of vehicle.
Further, if the railcar on two branch roads is all being S apart from fork distance2=Δ2* just bump against at d,
N*d described before fork is then changed to N*d-S2, and L described in the distance after road junction2=n2* d is changed to L2'=n2*d+S2。
The beneficial effects of the utility model are:
In Tthe utility model system and method, RFID controller can be according to RFID by the position real-time update track of railcar
Ranging information in label, subsequent railcar also can be calculated in real time according to the ranging information in RFID label tag with front truck away from
From being wire communication between RFID label tag and RFID controller, be the channel radio of short distance between RFID label tag and range finder module
News all have very high reliability, and the distance measured in this way is used to control the speed of railcar, and railcar collision can be effectively reduced
Risk, improve safety, convenient for promote the use of.
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment middle orbit traffic range-measurement system.
Fig. 2 is the flow chart of the utility model embodiment middle orbit traffic distance measuring method.
Fig. 3 is system scenarios schematic diagram when two vehicles are closer.
Fig. 4 is railcar and the system scenarios schematic diagram of road when driving.
Fig. 5 is the railcar and the system scenarios schematic diagram of road when driving after optimization.
Fig. 6 is railcar turnout system scenarios schematic diagram of the vehicle in straight way when driving.
Fig. 7 is that vehicle updates the system scenarios schematic diagram after ranging information in straight way to railcar turnout when driving.
Fig. 8 is system scenarios schematic diagram of the railcar turnout when driving when on branch road.
Fig. 9 is the system scenarios schematic diagram of railcar turnout when driving after optimization.
Specific embodiment
As shown in Figure 1, 2, a kind of rail traffic range-measurement system is mounted on including the range finder module being mounted in railcar
RFID controller and multiple RFID label tags by track, the multiple RFID label tag are installed in orbit with certain spacing, institute
It states multiple RFID label tags and RFID controller is electrically connected, the range finder module and RFID label tag wireless telecommunications.By the track
Spacing between the RFID label tag of installation is equal.The RFID label tag space between each other installed by the track is d, the ranging
The communication distance of module and RFID label tag is D, and D is less than d, to ensure to receive the ranging letter of a nearest RFID label tag
Breath, avoids the interference by other RFID label tags.
Range finder module includes RFID reader and metrics calculation unit.RFID reader and RFID label tag carry out channel radio
News.Metrics calculation unit is calculated by the ranging information that RFID reader communication obtains and leading vehicle distance.RFID controller is micro-
Controller, to update the ranging information in RFID label tag.The quantity and list of RFID label tag in RFID controller quantity and track
The ability of a RIFD controller control RFID label tag quantity is related, and quantity is not particularly limited, as long as meeting each RFID label tag
Ranging information can be updated with the RIFD controller of its wired connection.
When the railcar passes through RFID label tag, range finder module can read the ranging information in RFID label tag, the survey
When referring to that RFID reader and RFID label tag communicate away from information, information that RFID reader obtained be used to calculate distance (after
N in text)；The RFID label tag is issued to RFID controller simultaneously updates request, with update the RFID label tag and the railcar it
Ranging information in N number of RFID label tag of preceding process.N (the N that RFID controller will pass through before the RFID label tag and the railcar
It for positive integer, is determined according to the prestissimo of railcar and braking quality, RFID label tag spacing d, for example, if railcar is with most fast
When driving, the shortest distance travelled from braking to stopping is L to speedmin, then N*d should be greater than Lmin) ranging in a RFID label tag
Information be sequentially arranged for N, N-1 ... 2,1,0 (namely ranging information is numbered in order, in each RFID label tag
The number of ranging information dynamic change with the change in location of railcar).If the ranging information that railcar receives be n (n N,
N-1 ... one in 2,1,0), then the railcar is S at a distance from front truck.As n ≠ 0, S=(N-n) * d, error is ± d；When
N=0, S > (N-1) * d.The maximum distance range that range finder module can measure is N*d.
As the scheme that advanced optimizes of the utility model, RFID controller records update while updating RFID label tag
(number of RFID label tag is fixed value to the number of request RFID label tag, the number for several RFID label tags being arranged along track
Numerical value is sequentially increased in order, and the number of RFID label tag has reacted RFID label tag position in orbit)；RFID controller
When receiving the sending update request of some RFID label tag, the number for updating the RFID label tag of request can be more currently issued first
With by RFID label tag to be updated it is upper be once updated when issue and update the number of the RFID label tag of request, if current issue
For the number of the RFID label tag of update request in track Chinese herbaceous peony into the opposite direction in direction, then RFID controller will execute update, no
Then RFID controller, which will be ignored, this time updates request.As shown in figure 3, in this way it is prevented that (being less than when two cars are closer
When N*d), front truck passes through some RFID label tag, mistakenly updates the part RFID label tag at rear car rear.
For example, the RFID label tag of front truck and rear car position can all issue update request to RFID controller in Fig. 3, come
Update the ranging information in respective position and total N+1 RFID label tag later；Such as first RFID label tag at rear car rear, after
The RFID label tag of vehicle position is issued to RFID controller update request after, ranging information in this RFID label tag will be by
It is updated to N-1, however front truck position RFID label tag is issued to RFID controller after updating request, in this RFID label tag
Ranging information will be updated to N-5, this is the update of mistake；I.e. when the distance of front car and rear car is less than N*d, front truck passes through
When some RFID label tag, will mistake update rear car rear (RFID label tag including rear car position) several RFID mark
Label；Request is updated with by the RFID label tag last time to be updated by comparing the number for issuing the RFID label tag for updating request
RFID tag number mistakenly updates several RFID label tags at rear car rear to prevent front truck by some RFID label tag.
As shown in figure 4, scheme is advanced optimized as the utility model, for simultaneously road junction, before entering simultaneously road junction
Distance L1=n1*d(n1Should be greater than N, theoretically the bigger effect of n1 is better, but cost is higher) to and road junction after distance N*d it
Between, when railcar passes through the RFID label tag in the region, RFID controller will update equivalent position RFID on two branch roads simultaneously
Ranging information in label, i.e. on two branch roads with and road junction be consistent with the ranging information in equidistant RFID label tag.
Be equivalent in this way by two branch roads using and road junction as reference point imagination merge into a track, calculated with this in two differences
The relative distance of railcar and front truck (not necessarily on same branch road) on branch road.Railcar by itself speed control,
Adjustment prevents from bumping against at simultaneously road junction at a distance from front truck.
As shown in Figure 5, it is contemplated that railcar has certain impact volume in practice, and therefore, actually two railcars are also
It does not arrive at practical and road junction and just has occurred and that collision.Therefore, embodiment more preferably, it is assumed that the track on two branch roads
In distance, simultaneously road junction distance is all S to vehicle1=Δ1* just bump against at d, it should will be apart from practical and road junction S1The position at place is as hypothesis
And the position at road junction calculated, that is, and road junction to Forward distance S1, i.e., into the distance L before simultaneously road junction1=n1* d will
It is changed to L1'=n1*d+S1, and the distance N*d after road junction will be changed to N*d-S1.I other words before entering simultaneously road junction
Distance L1'=n1*d+S1Distance N*d-S to after simultaneously road junction1Between, when railcar passes through the RFID label tag in the region,
RFID controller will update ranging information on two branch roads in equivalent position RFID label tag simultaneously.
Scheme is advanced optimized as the utility model, is being entered at the N*d of fork in the road to the L after fork in the road2
=n2*d(n2Value do not require) between, there are two ranging informations, respectively n for each RFID label tag toolLWith nR, nLIndicate left
Side turnout range information, nRIndicate right side turnout range information.
As shown in fig. 6-7, if railcar branch road to the left travels, railcar is entered at the N*d of fork in the road to branching off
The RFID label tag on straight way between crossing, RFID controller only update nL, for the L after fork in the road to fork in the road2=n2*d
Between left side branch road on RFID label tag, RFID controller updates n simultaneouslyLAnd nRIt is consistent；If railcar branch road row to the right
It sails, railcar is entered to the RFID label tag on the straight way between fork in the road at the N*d of fork in the road, RFID controller is more
New nR, for the L after fork in the road to fork in the road2=n2* the RFID label tag on the right side branch road between d, RFID controller is simultaneously
Update nLAnd nRIt is consistent.
As shown in figure 8, when N*d is in the range of before rear car enters fork, if rear car will travel to the left, basis
The n receivedRValue judge whether the front truck toward right travel comes into branch road, if the front truck toward right travel does not enter into trouble
Road then takes nLWith nRIn biggish value calculate at a distance from front truck, if the front truck toward right travel comes into branch road, use
nLTo calculate at a distance from front truck；If rear car will be to right travel, according to the n receivedLThe turn left front truck of traveling of value judgement be
It is no to come into branch road, if the front truck for traveling of turning left does not enter into branch road, take nLWith nRIn biggish value calculate and front truck
Distance uses n if the front truck for traveling of turning left comes into branch roadRTo calculate at a distance from front truck.
As shown in Figure 9, it is contemplated that track has certain impact volume in practice, if railcar on two branch roads away from
It is all S with a distance from fork2=Δ2* just bump against at d, then when actually using this method, should by the position of practical fork to
Prolong distance S after fork2, that is, the fork assumed delay to distance practical fork distance S2Place, that is, by institute before fork
It states N*d and is changed to N*d-S2, L described in the distance after fork2=n2* d is changed to L2'=n2*d+S2。
The utility model during use, RFID controller can be according to the position real-time update track of railcar by
Ranging information in RFID label tag, subsequent railcar can also calculate in real time and front truck according to the ranging information in RFID label tag
Distance, the precision for measuring distance is d.It is wire communication, RFID label tag and range finder module between RFID label tag and RFID controller
Between be short distance wireless telecommunications, all have very high reliability.The distance measured in this way is used to control the speed of railcar,
The risk of railcar collision can be effectively reduced, improve safety, convenient for promoting the use of.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (3)
1. a kind of rail traffic range-measurement system, it is characterised in that: including the range finder module being mounted in railcar, be mounted on track
Other RFID controller and multiple RFID label tags, the multiple RFID label tag is installed in orbit with certain spacing, described more
A RFID label tag and RFID controller are electrically connected, and RFID controller is used to update the ranging information in RFID label tag；The survey
Away from module and RFID label tag wireless telecommunications, range finder module is used to read the ranging information in RFID label tag, and is believed according to the ranging
Breath calculates the distance between two vehicles on track.
2. a kind of rail traffic range-measurement system as described in claim 1, it is characterised in that: the RFID mark installed by the track
Spacing between label is equal.
3. a kind of rail traffic range-measurement system as claimed in claim 2, it is characterised in that: the RFID mark installed by the track
Label space between each other is d, and the communication distance of the range finder module and RFID label tag is D, and D is less than d.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821419121.XU CN208795240U (en) | 2018-08-31 | 2018-08-31 | A kind of rail traffic range-measurement system |
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| CN201821419121.XU CN208795240U (en) | 2018-08-31 | 2018-08-31 | A kind of rail traffic range-measurement system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452841A (en) * | 2020-04-13 | 2020-07-28 | 江苏飞梭智行设备有限公司 | Rail car control system and method for a merging or splitting area |
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2018
- 2018-08-31 CN CN201821419121.XU patent/CN208795240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452841A (en) * | 2020-04-13 | 2020-07-28 | 江苏飞梭智行设备有限公司 | Rail car control system and method for a merging or splitting area |
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