CN2913116Y - Running train detecting system using Gray bus - Google Patents
Running train detecting system using Gray bus Download PDFInfo
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- CN2913116Y CN2913116Y CN 200620012205 CN200620012205U CN2913116Y CN 2913116 Y CN2913116 Y CN 2913116Y CN 200620012205 CN200620012205 CN 200620012205 CN 200620012205 U CN200620012205 U CN 200620012205U CN 2913116 Y CN2913116 Y CN 2913116Y
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- gray bus
- train
- geocoding
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Abstract
The utility model relates to a detection device, especially speaking, a train running detection system with Gray bus. The utility model realizes the message transfer by the electromagnetic coupling between the antenna positioned on the train and the Gray bus laid along the trail, so the utility model has no mechanical contact wear and tear; Because the core wire of the Gray bus is crossed and twisted in the way of Gray code, which guarantees all the core wire of the Gray bus has no overlapping cross points, and the absolute address of the moving train can be detected continuously and precisely along the running range. The utility model has the advantages of high precision of position detection, rapid detection speed, and reliable absolute address and can not be affected by external factors. When the utility model is used to detect the train position, the dispatching staff and the train driver can be aided to master the real-time precise address of the train and the parking stations.
Description
Technical field
The utility model relates to a kind of detecting device, is a kind of train driving checking system that adopts Gray bus specifically.
Technical background
The run location that detects at present light rail, underground engines at home mainly is that the branch operation is interval.At each interval intersection a switching value signalling apparatus is set, is used for the general address of perception train, or determine the address of locomotive by the rail circuit.The location then relies on a location mark post when locomotive is stopped platform.These several locate modes all are a kind of roughly location, can satisfy the requirement of present stage substantially.But along with train dispatch a car quantity rapid increasing, the shortening of pitch time, circuit increases and track switch increases, this extensive locate mode causes knocking into the back of train and track switch place car accident possibly.Present on the other hand subway station much all is closed platform, and each car door of train is tackled each closing door, makes things convenient for getting on or off the bus of passenger, and positioning requirements was higher when locomotive was stopped platform.
The utility model content
The utility model has overcome above-mentioned shortcoming, provides a kind of simple in structure, the train driving checking system of the employing Gray bus that testing result is accurate, antijamming capability is strong.
The technical scheme in the invention for solving the technical problem is: comprise Gray bus, geocoding projector, geocoding receptor and antenna as coding cable, and two kinds of types of attachment are arranged:
Described antenna links to each other with described geocoding projector, and is provided with ON TRAINS, and described Gray bus links to each other with described geocoding receptor in being arranged on ground station,
Or described antenna links to each other with described geocoding receptor, and is provided with ON TRAINS, and described Gray bus links with the described geocoding projector that is arranged in the ground station,
Comprise at least two pairs of heart yearns in the described Gray bus, wherein a pair ofly be the datum line that is parallel to each other, all the other each be that the step-length of every pair of A wire has nothing in common with each other, and is respectively 2 of minimum step every step-length intersection A wire once to A wire
iDoubly, i=0 wherein, 1,2.......
Also can comprise one with the parallel induction loop of described Gray bus and be separately positioned on inductive communication unit on the train and in the ground station, the inductive communication unit on the described train also is connected with another antenna simultaneously.
The described antenna that links to each other with geocoding projector or geocoding receptor can comprise main coil and the secondary coil that parameter is identical, direction is identical, and described main coil is nearer than the distance between secondary coil and the described Gray bus.
Described geocoding receptor and geocoding projector all can be connected with Programmable Logic Controller, and described Programmable Logic Controller also is connected with wireless communication module.
Programmable Logic Controller on the described train also can be connected with a read-out.
Described Gray bus also can comprise with at least one pair of A wire step-length and equating, and the A wire of half step-length that staggers.
The minimum step of described Gray bus can be 20～400 millimeters, and preferred values is 200 millimeters.
The total length of described Gray bus can be 2
N-1* W, wherein, n is the logarithm of A wire, W is a minimum step.
The utility model is by main beneficial effect of the present utility model: by antenna L1 ON TRAINS being installed and the other Gray bus of train rail that is laid in carries out electromagnetic coupled and transmits information, no mechanicalness contact wear; Because intersecting twisting in the Gray code mode, the Gray bus heart yearn arranges, guarantee the omnidistance non-overlapping point of crossing of Gray bus heart yearn, can in the running train domain of walk, detect absolute address continuously, accurately, and because Gray bus has used distinctive intersection twisting structure and phase-detection technology, can eliminate the electromagnetic interference that power supply is opened, stopped producing in the process, be not subjected to the influence of environmental noise and received signal level fluctuation yet, can be such as the medium-term and long-term failure-free work of severe environmental conditions such as iron ore field.The utility model is installed in the middle of the track, detect the address of the operation of trains such as light rail, underground engines, have the position detection accuracy height, detection speed is fast, absolute address is reliable, be not subjected to characteristics such as externality, adopt the utility model to detect train position, can help dispatcher and engineer to grasp running train accurate address, the train position of pulling in real time.
Description of drawings
Fig. 1 is the utility model integral structure scheme drawing
Fig. 2 is the cable conductor expansion drawing of Gray bus in the utility model
Fig. 3 is a fundamental diagram of the present utility model
Fig. 4 is an accurate address testing schematic diagram in the utility model
Fig. 5 is antenna and a Gray bus distribution schematic diagram in the utility model
The specific embodiment
Present embodiment sends geocoding by ground station to Gray bus, receiver address is encoded ON TRAINS, thereby realize accurate location to train, as shown in Figure 1, Gray bus and induction loop are parallel, two ends are connected with termination rack AI and top case AO respectively, described top case AO process lead cable is connected to the geocoding projector U1 in the ground station, described geocoding projector U1 connects a Programmable Logic Controller PLC1, described Programmable Logic Controller PLC1 also is connected with one and links to each other with described top case AO, be used for the inductive communication module U3 that communicates with train, comprise antenna L1 and the geocoding receptor U2 that links to each other with described antenna L1 on the described train, described geocoding receptor U2 links to each other with another Programmable Logic Controller PLC2, also connect the read-out U5 and the inductive communication module U4 that is used for communicating by described induction loop and described ground station that are used to show relevant informations such as detected state and result simultaneously, described induction is deeply regretted module and is connected with antenna L2.
Described Gray bus is laid along train rail, and be the detection bus of arranging in the Gray code mode, comprise cable sheath and the cable conductor and the core rod that wrap up by described cable sheath, described cable conductor as shown in Figure 2, described cable conductor has two kinds, i.e. datum line R line and A wire G0 line-G9 line, and datum line R line does not intersect in whole Gray bus section, be used to obtain standard signal, A wire is used to detect the address.Each, intersects once every a step-length by the layout of asynchronous calipers rule to A wire, and the minimum step of establishing Gray bus is W, then G0, G1, G2 ... G8, G9 step-length are respectively 2
0W, 2
1W, 2
2W ... 2
8W, 2
9W, i.e. 1W, 2W, 4W ... 256W, 512W.
A wire by above-mentioned layout, can realize the detection of absolute address, go up on the train antenna L1 who has emitting antenna is installed, antenna L1 is apart from Gray bus cable 8～20CM, the high-frequency signal of antenna L1 emission is received by ground-surface Gray bus cable by electromagnetic induction, the R line is a pair of line of parallel lay-up, the signal that receives is as reference signal, G0～G9 has different point of crossings in different positions, its signal that receives is after intersecting through even number, phase place is identical with reference signal, and after through the odd number point of crossing, phase place is opposite with the phase place of reference signal, if the address is " 0 " during the regulation same-phase, the address is " 1 " during antiphase, then obtains unique 10 geocoding in a certain position of Gray bus cable, and this is corresponding to an address of locomotive.
As shown in Figure 3, checking system with 4 addresses is that example specifically describes mobile testing process: the geocoding projector of described ground station is given signal Gray bus gauge target, A wire 1, A wire 2 respectively with the same frequency time-sharing format, and by the electromagnetic coupled mode signal is sent to antenna on the train.
Geocoding receptor on the train is in order after the received signal, and the signal of two pairs of A wires is carried out bit comparison mutually with the datum line signal respectively, if the signal phase of A wire is identical with the signal phase of datum line, defines the address so and is " 0 "; If phase place is opposite, the definition address is " 1 ".The signal phase of two of address 1 pairs of A wires is identical with the signal phase of datum line among Fig. 3, so address 1 is " 00 ".The signal phase of first pair of A wire in the address 2 is identical with the signal phase of datum line, and the signal phase of second pair of A wire is opposite with the signal phase of datum line, so address 2 is " 01 ".
Can see that from top analysis Gray bus can detect 2 addresses with a pair of A wire, can detect 4 addresses with two pairs of A wires.In fact, can detect 2 with n to A wire
nIndividual address.
According to electromagnetic theory:
Ф=S*B is wherein: Ф is a magnetic flow, and S is an area coil, and B is an electromagnetism intensity.
E=N*d Ф/dt is wherein: e is an induced voltage, and N is the number of turn of coil.
Theoretically, as long as obtain Gray bus minimum step W enough little, the Gray bus accuracy of positioning just can be done very highly, but on engineering because Gray bus heart yearn, antenna size error, nosing, the Distribution of Magnetic Field irregularity, and factor such as external interference, Gray bus minimum step W value is subjected to certain limitation.W obtains too little, and the electromagnetic induction area diminishes, and the signal to noise ratio of address detected is low, causes the address instability.According to engineering experience, the W=200 millimeter is better.
Gray bus minimum step W determines that according to accuracy of positioning cable length is determined by the quantity and the minimum step W of Gray bus heart yearn.In general:
Absolute fix precision μ=W/2 (wherein W is the Gray bus minimum step)
Gray bus length L=2
n* μ (wherein n is the quantity of Gray bus heart yearn)
We know when Gray bus minimum step W=200 millimeter by top analysis, and the accuracy of detection of big address is:
μ=W/2=200/2=100 millimeter.
If the Gray bus A wire is 10 to (G0-G9), when the W=200 millimeter, then Gray bus length is:
L=2
10* 100 (millimeter)=102.4 meter.
Gray bus length can be decided according to requirement of engineering, and single Gray bus length can reach 102.4 meters, and many Gray buses are sliceable to satisfy requirement of engineering.
200 millimeters of A wire G0 step-lengths begin to intersect at 100 millimeters; 400 millimeters of G1 step-lengths begin to intersect at 200 millimeters; 800 millimeters of G2 step-lengths begin to intersect at 400 millimeters, 51.2 meters of G8 step-lengths, 25.6 meters intersections once; 102.4 meters of G9 step-lengths, 51.2 meters intersections once.
Select that a kind of address detected mode of operation to consider decision according to the demand of control system.If the center of gravity of control system goes up ON TRAINS, then adopt mobile detection mode better; If the center of gravity of control system in ground station, then adopts the fixed test mode more suitable.
In addition, can increase a pair of A wire L0 in described Gray bus, as shown in Figure 4, the step-length of described A wire L0 is that transpostion interval follows G0 the same, and step-length just staggers half.
The same with the absolute address method of inspection, accurate address also is divided into detection mode and ground detection mode on the car.Two kinds of mode of operation principles are identical, are example with the ground detection mode here, increase a pair of A wire L0 in the Gray bus cable, and its transpostion interval is the same with G0, and minimum step just staggers half.
As shown in Figure 4, G0, the intersection spacing unanimity of two pairs of lines of L0 is 200 millimeters, and staggers 100 millimeters, and wherein the R line is a datum line, does not intersect.
When feeding exchange current in the aerial coil on the train, the induced electric motive force that A wire G0, L0 produce is as follows:
V0＝-N*dФ0/dt....................(1)
V1＝-N*dФ1/dt....................(2)
Ф＝S*B....................(3)
Wherein, V0, V1---the last induced electromotive force signal amplitude of cable conductor G0, L0;
D Ф 0, d Ф 1---by the flux change amount of cable conductor G0, L0;
N---the Gray bus heart yearn number of turns, here N=1;
B---magnetic-field intensity;
S---magnetic field acts on the payload space on cable conductor G0, the L0;
Act on payload space on the heart yearn G0 if S0 is magnetic field, S1 is that magnetic field acts on the payload space on the heart yearn L0, and H is the width of cable, and W is the minimum step of Gray bus heart yearn.Antenna on the train by Fig. 5 in mode when moving (miles of relative movement is X, X＜100 millimeter).
Then: V0=-d Ф 0/dt=-BdSO/dt=-Bd (HW-2HX)/dt .... (4)
V1＝-dФ1/dt＝-BdS1/dt＝-Bd(2HX)/dt....(5)
In the interval, get at one time by (4)/(5):
V0/V1＝W/2X-1....(6)
After Gray bus installed, when the antenna signal source was constant, by formula (6) as can be known, in millimeter scope of X＜100, V0/V1 and X were linear.Because the intersection spacing of G0, L0 is identical and stagger 100 millimeters, thus a V0/V1 ratio correspondence is always arranged in each position of 100 millimeters spacings, and the influence that not fluctuateed by environmental noise and received signal level of this ratio.
With V0, V1 rectification, A/D change digital quantity, V0, V1 send into CPU, calculate V0/V1, this ratio is corresponding to an address of (0 → 100 millimeter) in the big address, its accuracy of detection is μ/m, m is the isodisperse of big address segmentation.If in theory V0/V1 ratio is infinitely segmented, can obtain very high accuracy of detection, but because the restriction of technological condition, address segmentation number can not be very big, according to engineering experience, it is 20 better that the segmentation number is got.For example, if the big address precision that Gray bus obtains is 100 millimeters, the segmentation number is 20, then accurate address precision=100/20=5 millimeter.
Described coil L1 comprises main coil and secondary coil as shown in Figure 5, and described main coil is the same with the secondary coil parameter, connects in the same way, and main coil is near apart from induction cable signal radiation scope, and secondary coil is far away apart from induction cable signal radiation scope.Because main coil and secondary coil have range difference, concerning the induced signal of address, the signal power of two coil receptions is variant; Concerning interfering signal, the signal of two coil receptions is quite strong and weak.The signal power is variant; Concerning interfering signal, the signal of two coil receptions is quite strong and weak.Like this, by collection and the comparison to G0 line and L0 line, can either eliminate the electromagnetic interference that power supply is opened, stopped producing in the process, not dip again and detect the receiving sensitivity of antenna, the difference coil of quite coaxial distribution causes system signal noise ratio much lower.
Main beneficial effect of the present utility model is: by antenna L1 ON TRAINS being installed and the other Gray bus of mobile vehicle track that is laid in carries out electromagnetic coupled and transmits information, no mechanicalness contact wear; Because intersecting twisting in the Gray code mode, the Gray bus heart yearn arranges, guarantee the omnidistance non-overlapping point of crossing of Gray bus heart yearn, can in the mobile vehicle domain of walk, detect absolute address continuously, accurately, accuracy of detection reaches 5 millimeters, can satisfy the pinpoint demand of mobile vehicle fully; And because Gray bus has used distinctive intersection twisting structure and phase-detection technology, can eliminate the electromagnetic interference that power supply is opened, stopped producing in the process, be not subjected to the influence of environmental noise and received signal level fluctuation yet, can be such as the medium-term and long-term failure-free work of severe environmental conditions such as iron ore field; In addition, be installed in outdoor Gray bus, antenna L1, top case, termination rack and intersegmental case and adopt non-metallic material to make and the employing sealing technology, be not afraid of rainwater, dust, the acid and alkali resistance corrosion.
In addition, described induction loop is laid along Gray bus at regular intervals, realize the intercommunication of train and ground part by the inductive communication mode, by electromagnetic coupled signal send and signal receive between transmission information, frequency of utilization keying (FSK) mode is modulated, and uses coherent demodulation, standard traffic speed 4800bps or 9600bps, because the inductive communication mode of described employing induction loop is this area routine techniques, repeats no more here.
The utlity model has the position detection accuracy height, detection speed is fast, absolute address is reliable, be not subjected to characteristics such as externality, adopt the utility model to detect train position, can help dispatcher and engineer to grasp running train address, the train position of pulling in real time accurately, to train positioning precision height, Installation and Debugging are simple, be beneficial to expansion, characteristics such as maintenance load is little can realize that train groups is moved driving, stopping a train at a target point, nobody turns back automatically and by time-table function such as operation automatically
More than the train driving checking system of employing Gray bus provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (8)
1. train driving checking system that adopts Gray bus is characterized in that: comprise Gray bus, geocoding projector, geocoding receptor and antenna as coding cable, and two kinds of types of attachment are arranged:
Described antenna links to each other with described geocoding projector, and is provided with ON TRAINS, and described Gray bus links to each other with described geocoding receptor in being arranged on ground station,
Or described antenna links to each other with described geocoding receptor, and is provided with ON TRAINS, and described Gray bus links with the described geocoding projector that is arranged in the ground station,
Comprise at least two pairs of heart yearns in the described Gray bus, wherein a pair ofly be the datum line that is parallel to each other, all the other each be that the step-length of every pair of A wire has nothing in common with each other, and is respectively 2 of minimum step every step-length intersection A wire once to A wire
1Doubly, i=0 wherein, 1,2.......
2. the train driving checking system of employing Gray bus according to claim 1, it is characterized in that: also comprise one with the parallel induction loop of described Gray bus and be separately positioned on inductive communication unit on the train and in the ground station, the inductive communication unit on the described train also is connected with another antenna simultaneously.
3. the train driving checking system of employing Gray bus according to claim 1 and 2, it is characterized in that: the described antenna that links to each other with geocoding projector or geocoding receptor comprises main coil and the secondary coil that parameter is identical, direction is identical, and described main coil is nearer than the distance between secondary coil and the described Gray bus.
4. the train driving checking system of employing Gray bus according to claim 1 and 2, it is characterized in that: described geocoding receptor and geocoding projector all are connected with Programmable Logic Controller, and described Programmable Logic Controller also is connected with wireless communication module.
5. the train driving checking system of employing Gray bus according to claim 4 is characterized in that: the Programmable Logic Controller on the described train also is connected with a read-out.
6. the train driving checking system of employing Gray bus according to claim 1 and 2 is characterized in that: described Gray bus also comprises with at least one pair of A wire step-length and equating, and the A wire of half step-length that staggers.
7. the train driving checking system of employing Gray bus according to claim 6 is characterized in that: the minimum step of described Gray bus is 20～400 millimeters, and preferred values is 200 millimeters.
8. the train driving checking system of employing Gray bus according to claim 1 and 2 is characterized in that: the total length of described Gray bus is 2
N-1* W, wherein, n is the logarithm of A wire, W is a minimum step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012205 CN2913116Y (en) | 2006-04-18 | 2006-04-18 | Running train detecting system using Gray bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012205 CN2913116Y (en) | 2006-04-18 | 2006-04-18 | Running train detecting system using Gray bus |
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| CN2913116Y true CN2913116Y (en) | 2007-06-20 |
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| CN 200620012205 Expired - Lifetime CN2913116Y (en) | 2006-04-18 | 2006-04-18 | Running train detecting system using Gray bus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756909A (en) * | 2012-07-26 | 2012-10-31 | 中国神华能源股份有限公司 | Control system and method for tripper |
| CN102819265A (en) * | 2012-08-29 | 2012-12-12 | 上海富洋自动化工程设备有限公司 | Carrier robot self-propelled vehicle for continuous absolute address system |
| CN105141323A (en) * | 2015-08-04 | 2015-12-09 | 杭州钱江称重技术有限公司 | Extra-long-distance wireless continuous address reading data system |
| CN107531158A (en) * | 2015-04-20 | 2018-01-02 | 三菱电机株式会社 | Train data transmission system and train data transmission program |
| CN109186436A (en) * | 2018-08-20 | 2019-01-11 | 宝瑾测控技术（武汉）有限公司 | A kind of electronics magnetic scale and electronics magnetic scale positioning system |
-
2006
- 2006-04-18 CN CN 200620012205 patent/CN2913116Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756909A (en) * | 2012-07-26 | 2012-10-31 | 中国神华能源股份有限公司 | Control system and method for tripper |
| CN102756909B (en) * | 2012-07-26 | 2015-09-30 | 中国神华能源股份有限公司 | Dump car control system and method |
| CN102819265A (en) * | 2012-08-29 | 2012-12-12 | 上海富洋自动化工程设备有限公司 | Carrier robot self-propelled vehicle for continuous absolute address system |
| CN107531158A (en) * | 2015-04-20 | 2018-01-02 | 三菱电机株式会社 | Train data transmission system and train data transmission program |
| CN105141323A (en) * | 2015-08-04 | 2015-12-09 | 杭州钱江称重技术有限公司 | Extra-long-distance wireless continuous address reading data system |
| CN109186436A (en) * | 2018-08-20 | 2019-01-11 | 宝瑾测控技术（武汉）有限公司 | A kind of electronics magnetic scale and electronics magnetic scale positioning system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070620 |
|
| EXPY | Termination of patent right or utility model |