CN200941246Y - Gray bus displacement detection system - Google Patents
Gray bus displacement detection system Download PDFInfo
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- CN200941246Y CN200941246Y CN 200620012206 CN200620012206U CN200941246Y CN 200941246 Y CN200941246 Y CN 200941246Y CN 200620012206 CN200620012206 CN 200620012206 CN 200620012206 U CN200620012206 U CN 200620012206U CN 200941246 Y CN200941246 Y CN 200941246Y
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- gray bus
- gray
- address
- detection system
- geocoding
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Abstract
The utility model relating to a shift detecting device, in particular to a Gray bus bar shift detecting device, has chief facilitative results in that signals are transmitted through the electromagnetic coupling of an antenna box in a mobile station and the Gray bus bar laid beside a mobile locomotive track, without mechanical contact wear. Because the Gray bus bar core wire is in cross and strand arrangement in the style of Gray code and has no overlapped crossing points in the whole range, absolute addresses can be detected continuously and high-accurately. Furthermore, because the Gray bus bar adopts a peculiar cross and strand structure and phase detection technology, electromagnetism interruption generated in the power turning off and on can be eliminated and the influence of voltage level fluctuation of receiving signals and environmental noises can be avoided, thus, in harsh environment like iron ore fields, long-term and reliable working is possible.
Description
Technical field
The utility model relates to a kind of displacement detector, is a kind of Gray bus displacement detection system specifically.
Technical background
The existing equipment that is used for detection position or displacement exists a lot of drawbacks and deficiency, for example detect the equipment of displacement that obtains by contact, contact component there is mechanical abrasion, or for some equipment that utilizes electromagnetic signal to detect, the result who detects is subjected to the influence of situations such as electromagnetic interference (EMI), environmental noise, received signal level fluctuation easily, or be subjected to the influence of physical environments such as rainwater, dust, soda acid easily, thereby cause that accuracy of detection is low, error is big, reliability is low.
The utility model content
The utility model has overcome above-mentioned shortcoming, provides a kind of simple in structure, the Gray bus displacement detection system 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 transmitter, geocoding receiver and antenna as coding cable, and two kinds of types of attachment are arranged:
Described antenna links to each other with described geocoding transmitter, and is arranged in the movement station, and described Gray bus links to each other with described geocoding receiver in being arranged on fixed station,
Or described antenna links to each other with described geocoding receiver, and is arranged in the movement station, and described Gray bus now joins with the described geocoding transmitter that is arranged in the fixed 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 address wire has nothing in common with each other, and is respectively 2 of minimum step every step-length intersection address wire once to address wire
iDoubly, i=0 wherein, 1,2.......
Described geocoding receiver and geocoding transmitter all can be connected with Programmable Logic Controller, and described Programmable Logic Controller also is connected with wireless communication module.
Programmable Logic Controller in the described movement station also can be connected with a display screen.
Described antenna 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 Gray bus also can comprise with at least one pair of address wire step-length and equating, and the address 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 address wire, W is a minimum step.
The utility model is by main beneficial effect of the present utility model: the antenna case by being installed in movement station and the other Gray bus of mobile vehicle track that is laid in carry out electromagnetic coupled and transmit 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 specific address continuously, accurately, and because Gray bus has used distinctive intersection twisting structure and phase-detection technology, can eliminate the electromagnetic interference (EMI) 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 working reliably such as severe environmental conditions such as iron ore field are medium-term and long-term.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 in the utility model
Fig. 2 is the cable core stretch-out view of Gray bus in the utility model
Fig. 3 is the fundamental diagram of embodiment 1 in the utility model
Fig. 4 is the structural representation of embodiment 2 in the utility model
Fig. 5 is embodiment 2 fundamental diagrams in the utility model
Fig. 6 is an accurate address testing schematic diagram in the utility model
Fig. 7 is housings and a Gray bus distribution schematic diagram in the utility model
Embodiment
The detection bus of described Gray bus for arranging in the Gray code mode, comprise cable cover(ing) and the cable core and the core rod that wrap up by described cable cover(ing), described cable core as shown in Figure 2, described cable core has two kinds, be datum line R line and address wire G0 line-G9 line, datum line R line does not intersect in whole Gray bus section, is used to obtain standard signal, and address wire is used to detect the address.Each, intersects once every a step-length by the layout of asynchronous calipers rule to address 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.
Address wire by above-mentioned layout, can realize the detection of specific address, an antenna case that has emitting antenna is installed on the movement station, antenna spacing thunder bus out of place cable 8～20CM, the high-frequency signal of antenna case emission is received by the Gray bus cable on ground 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 crossing 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, describe fixed station detection mode principle of work by the address detection system of a minimum, the Gray bus in this system only is made up of the address wire of pair of cross and the datum line of pair of parallel.When feeding exchange current in the aerial coil of movement station, near antenna, can produce alternating magnetic field, because antenna thunder bus out of place very near (about 80 millimeters), so described Gray bus is approximate be in an alternation, in the equally distributed magnetic field, therefore every pair of Gray bus heart yearn can produce induction electromotive force.The address signal of being launched by the antenna of described movement station is sent on the address wire and datum line of Gray bus by the electromagnetic coupled mode, and signal is sent to the geocoding receiver of fixed station by address wire and datum line.The geocoding receiver carries out the phase bit comparison to the received signal.When the signal phase of the address wire of address " 0 " is identical with the signal phase of datum line, define the movement station address so and be " 0 "; When the signal phase of the address wire of address " 1 " is opposite with the signal phase of datum line, the movement station address is " 1 " so.Thereby realized finishing address detected at fixed station.
In this process, movement station antenna case is signal " emitting antenna ", and fixed station Gray bus heart yearn is signal " receiving antenna "; Detect the address of movement station by fixed station, described movement station will obtain this locomotive address to be needed obtain by communication.
Embodiment 2 sends coded signal for a kind of by fixed station, by the displacement detecting mode of movement station received encoded signal, also claims the movement station detection mode.As shown in Figure 4, the two ends of Gray bus are connected with termination rack and top case respectively, described top case process lead cable is connected to the geocoding transmitter in the fixed station, described geocoding transmitter connects a Programmable Logic Controller PLC1, described Programmable Logic Controller PLC1 connects a wireless module that is used for carrying out with movement station radio communication, comprise antenna case and the geocoding receiver that links to each other with described antenna case in the described movement station, described geocoding receiver links to each other with another Programmable Logic Controller PLC2, also connects the wireless module that is used to show the display screen of relevant informations such as detected state and result and is used for carrying out with described fixed station radio communication simultaneously.
The detection bus of described Gray bus for arranging in the Gray code mode, comprise cable cover(ing) and the cable core and the core rod that wrap up by described cable cover(ing), described cable core also as shown in Figure 2, described cable core has two kinds, be datum line R line and address wire G0 line-G9 line, datum line R line does not intersect in whole Gray bus section, is used to obtain standard signal, and address wire is used to detect the address.Each, intersects once every a step-length by the layout of asynchronous calipers rule to address 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.
By the address wire of above-mentioned layout, can realize the detection of specific address, the geocoding generator of land station is at T
R0Constantly connect standard signal line R0, at first send a synchronous head, and then send the R0 signal; T
G0Constantly connect address wire G0, send the G0 signal; Connect successively and to G1, G2 ... G8, G9 send signal.After receiving antenna on the car received synchronous head signal, the signal of next time was R0, and then is G0, G1, G2 ... G8, G9.The address detected unit produces a standard signal according to the R0 signal that receives on the car, send into after each road address wire signal amplification shaping that and then will receive and carry out phase demodulation and counting, G0, G1, G2 ... G8, G9 signal phase are identical with the R0 signal, if specified address is " 0 ", the address is " 1 " during antiphase, can obtain one group of Gray code.At last Gray code conversion is become decimal number can obtain the position of mobile vehicle.
As shown in Figure 5, detection system with 4 addresses is that example specifically describes mobile testing process: the geocoding transmitter of described fixed station is given signal Gray bus standard lines, address wire 1, address wire 2 respectively with the same frequency time-sharing format, and signal is sent to the antenna of movement station by the electromagnetic coupled mode.
The geocoding receiver of movement station is in order after the received signal, and the signal of two pairs of address wires is carried out bit comparison mutually with the datum line signal respectively, if the signal phase of address 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 address 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 address wire in the address 2 is identical with the signal phase of datum line, and the signal phase of second pair of address 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 address wire, can detect 4 addresses with two pairs of address wires.In fact, can detect 2 with n to address wire
nIndividual address.
According to electromagnetic theory:
Φ=S*B is wherein: Φ is a magnetic flux, and S is an area coil, and B is an electromagnetism intensity.
E=N*d Φ/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 bearing accuracy just can be done very highly, but on engineering because Gray bus heart yearn, antenna size error, nosing, the Distribution of Magnetic Field unevenness, 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 (S/N 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 bearing accuracy 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 address 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 address 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 working method to consider decision according to the demand of control system.If the center of gravity of control system on movement station, then adopts mobile detection mode better; If the center of gravity of control system at fixed station, then adopts the fixed test mode more suitable.
In addition, can increase a pair of address wire L0 in described Gray bus, as shown in Figure 4, the step-length of described address wire L0 is that transpostion interval follows G0 the same, and step-length just staggers half.
The same with the specific address detection method, accurate address also is divided into movement station detection mode and fixed station detection mode.Two kinds of working method principles are identical, are example with the fixed station detection mode here, increase a pair of address 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 6, 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 of movement station, the induction electromotive force that address wire G0, L0 produce is as follows:
V0＝-N*dΦ0/dt ....................(1)
V1＝-N*dΦ1/dt ....................(2)
Φ＝S*B ....................(3)
Wherein, V0, V1---the last induced electromotive force signal amplitude of cable core G0, L0;
N---the Gray bus heart yearn number of turns, here N=1;
B---magnetic field intensity;
The useful area of S---the action of a magnetic field on cable core G0, L0;
If S0 is the useful area of the action of a magnetic field on heart yearn G0, S1 is the useful area of the action of a magnetic field on heart yearn L0, and H is the width of cable, and W is the minimum step of Gray bus heart yearn.When the antenna on the movement station by Fig. 5 in mode when moving (displacement is X, X＜100 millimeter).
Then: V0=-d Φ 0/dt=-BdS0/dt=-Bd (HW-2HX)/dt .... (4)
V1＝-dΦ1/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 process conditions, 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.
Comprise main coil and secondary coil in the described antenna case, 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 undesired signal, the signal of two coil receptions is quite strong and weak.The signal power is variant; Concerning undesired 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 (EMI) 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: the antenna case by being installed in movement station and the other Gray bus of mobile vehicle track that is laid in carry out electromagnetic coupled and transmit 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 specific 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 (EMI) 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 working reliably such as severe environmental conditions such as iron ore field are medium-term and long-term; In addition, be installed in outdoor Gray bus, antenna case, top case, termination rack and intersegmental case and adopt nonmetallic materials to make and the employing sealing technology, be not afraid of rainwater, dust, the acid and alkali resistance corrosion.
More than Gray bus displacement detection system 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 (7)
1. Gray bus displacement detection system is characterized in that: comprise Gray bus, geocoding transmitter, geocoding receiver and antenna as coding cable, and two kinds of types of attachment are arranged:
Described antenna links to each other with described geocoding transmitter, and is arranged in the movement station, and described Gray bus links to each other with described geocoding receiver in being arranged on fixed station,
Or described antenna links to each other with described geocoding receiver, and is arranged in the movement station, and described Gray bus links to each other with described geocoding transmitter in being arranged on fixed 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 address wire has nothing in common with each other, and is respectively 2 of minimum step every step-length intersection address wire once to address wire
iDoubly, i=0 wherein, 1,2.......
2. Gray bus displacement detection system according to claim 1 is characterized in that: described antenna 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.
3. Gray bus displacement detection system according to claim 1 and 2 is characterized in that: described geocoding receiver and geocoding transmitter all are connected with Programmable Logic Controller, and described Programmable Logic Controller also is connected with wireless communication module.
4. Gray bus displacement detection system according to claim 3 is characterized in that: the Programmable Logic Controller in the described movement station also is connected with a display screen.
5. Gray bus displacement detection system according to claim 1 and 2 is characterized in that: described Gray bus also comprises with at least one pair of address wire step-length and equating, and the address wire of half step-length that staggers.
6. Gray bus displacement detection system according to claim 1 and 2 is characterized in that: the minimum step of described Gray bus is 20～400 millimeters.
7. Gray bus displacement detection system 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 address wire, W is a minimum step.
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| CN 200620012206 CN200941246Y (en) | 2006-04-18 | 2006-04-18 | Gray bus displacement detection system |
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| CN 200620012206 CN200941246Y (en) | 2006-04-18 | 2006-04-18 | Gray bus displacement detection system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010003290A1 (en) * | 2008-07-11 | 2010-01-14 | 武汉利德测控技术股份有限公司 | An electronic coordinatometer for position detection |
| CN102092639A (en) * | 2010-12-08 | 2011-06-15 | 沈阳大学 | Intelligent control equipment for coordinating operation of cranes |
| 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 |
| CN103090776A (en) * | 2013-01-16 | 2013-05-08 | 河北联合大学 | Protected-type Gray bus positioning system |
| CN103429995A (en) * | 2011-03-30 | 2013-12-04 | 约翰尼斯海登海恩博士股份有限公司 | Position measuring device |
| 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 |
| WO2017092111A1 (en) * | 2015-12-03 | 2017-06-08 | 中国矿业大学 | Elevator carriage positioning and encoding system and control method |
| 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 |
| CN111679310A (en) * | 2020-06-24 | 2020-09-18 | 重庆赛迪奇智人工智能科技有限公司 | Locomotive high-precision fusion positioning scheme applied to iron and steel enterprises |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7832115B2 (en) * | 2008-07-11 | 2010-11-16 | Wuhan Leaddo Measuring & Control Co., Ltd. | Electronic coordinatometer |
| WO2010003290A1 (en) * | 2008-07-11 | 2010-01-14 | 武汉利德测控技术股份有限公司 | An electronic coordinatometer for position detection |
| CN102092639A (en) * | 2010-12-08 | 2011-06-15 | 沈阳大学 | Intelligent control equipment for coordinating operation of cranes |
| CN102092639B (en) * | 2010-12-08 | 2012-11-28 | 沈阳大学 | Intelligent control equipment for coordinating operation of cranes |
| CN103429995A (en) * | 2011-03-30 | 2013-12-04 | 约翰尼斯海登海恩博士股份有限公司 | Position measuring device |
| 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 |
| CN103090776A (en) * | 2013-01-16 | 2013-05-08 | 河北联合大学 | Protected-type Gray bus positioning system |
| CN103090776B (en) * | 2013-01-16 | 2015-09-30 | 河北联合大学 | Protection Gray bus positioning 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 |
| WO2017092111A1 (en) * | 2015-12-03 | 2017-06-08 | 中国矿业大学 | Elevator carriage positioning and encoding system and control method |
| 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 |
| CN111679310A (en) * | 2020-06-24 | 2020-09-18 | 重庆赛迪奇智人工智能科技有限公司 | Locomotive high-precision fusion positioning scheme applied to iron and steel enterprises |
| CN111679310B (en) * | 2020-06-24 | 2023-09-22 | 重庆赛迪奇智人工智能科技有限公司 | Locomotive high-precision fusion positioning method applied to iron and steel enterprises |
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