A kind of railway track checking car disease place accurate positioning method and device
Technical field:
The present invention relates to the accurate positioning method and the device of a kind of railway track checking car disease place and railroad vehicle, belong to railroad track maintenance field of locating technology.
Background technology:
Railway track checking car adopts the position of meter axle instrument measuring and calculating train, thereby obtains the position in the disease place of institute's survey track.Owing to have problems such as producing sliding property, vibration during the train wheel operation, make that position that track checking car is remembered and actual position are variant, and this species diversity can be accumulated with the length of range ability.Adopt the calibrating method of the other kilometer post of artificial observation rail at present, can the part degree reduce cumulative errors.Yet still can not provide accurate location, and along with the raising of operating speed, error will be big more, more can't operate under dull thread.The position in disease place is inaccurate, with strengthening the intensity of railroad track service work even can't finding the inhomogeneous type disease of rigidity, incurs loss through delay the time of track Disease Processing, causes train accident hidden danger or influences ride quality, and is particularly serious down at a high speed.With regard to broad sense, the control of railroad vehicle need provide vehicle pinpoint location information.
Summary of the invention:
The objective of the invention is to provide a kind of method and apparatus that compared with prior art can disease place, more accurate location, thereby make things convenient for track service personnel and repair apparatus accurately and timely to handle disease.
The objective of the invention is to be achieved through the following technical solutions.
The present invention is on the basis of the detection of former track checking car disease and registration device, a kind of track checking car disease place accurate positioning device is provided, it comprises imbeds a kind of passive RF electronic tag or electronic tag movably temporarily on the other kilometer post of ground rail, this electronic tag writes down the location information and the out of Memory (electronic tag kilometer board) of kilometer post in the electronics mode, the information that interim movably electronic tag storage is transmitted on car, track checking car is provided with antenna and radio electronic label readout device, the radio electronic label readout device sends energy to the direction of burying dress passive RF electronic tag continuously by antenna in the track checking car operational process, in case the operation track checking car walks near the kilometer post that buries dress passive RF electronic tag, the passive RF electronic tag will receive energy and be waken up, and the radio electronic label readout device on track checking car sends the unique address information of this kilometer post of expression, the radio electronic label readout device is received the unique address information of this kilometer post by Car antnna, and the position of installing according to antenna, the speed per hour of train operation, and the input keyboard interface that the reading of meter axle instrument adopts " self adaptation blending algorithm " to provide precise position information and the disease detecting device (object computer) by track checking car is imported automatically, thereby give the disease detecting device one accurate reference position location of track checking car, guaranteed disease that the disease detecting device of track checking car detected with respect to track other kilometer indicate accurate location positioning.On the basis of accurate positioning correcting, realize the correction of accumulated error.In like manner, just read the information of on car, transmitting during near interim label, take some countermeasures for object computer when readout device.
For the application of this technology on engineering, take in label, to provide the time-delay correction for the installation of electronic tag lack of standardization with the effect correction precision, thereby under disavantage, guarantee correction accuracy.
Precision for corrective system is determined, special track form (bed hedgehopping track) is made in employing at required definite orbital position place (electronic tag corresponding position), when track checking car by the time from the track geometry map sheet, can obviously find out the expression of the special track form of doing, thereby can find out the distance of figure peak point by figure or graph data to check point, this can be revised by adjusting amount of delay apart from the correction error of expressing.
The invention has the beneficial effects as follows will make correction accuracy from originally smaller or equal to 30 meters bring up to ± 0.2 meter, the accurate location in track checking car disease place can allow the railroad track service personnel find the disease place quickly and accurately, in time get rid of the track fault, guarantee that safety of railway traffic on schedule.Realize that meanwhile terrestrial information transmits on car.
Description of drawings
Fig. 1 is railway track checking car disease place accurate positioning method of the present invention and apparatus structure scheme drawing.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further described.
As shown in Figure 1, the present invention with a kind of passive RF electronic tag place the other kilometer post of fixing track or temporarily movably passive electronic label place by the track, antenna and radio electronic label readout device are placed on the mobile track checking car.The radio electronic label readout device is in the track checking car operational process, send energy to the direction of burying dress passive RF electronic tag continuously by antenna, the passive RF electronic tag will receive energy and be waken up, and the radio electronic label readout device on track checking car sends the unique address information of this kilometer post of expression.Registration device is received the unique address information of this kilometer post by Car antnna by received RF electronic tag readout device, and according to the position of antenna installation, the speed per hour of train operation and the reading of meter axle instrument, adopt " self adaptation blending algorithm " to provide precise position information, and the input keyboard interface of the disease detecting device by track checking car, input position control information automatically.
The self adaptation blending algorithm is with the pulse count of amount of delay conversion for meter axle instrument, and two interpulse length equal to take turns 1/ (meter axle instrument turns around and sends pulse number) of circumference.The sky line-spacing mileage of electronic tag readout device determines that the some design has lead, in order to the communication between correcting electronic label readout device, the disease place detecting device and the time-delay of detecting device data handing, the different speed of a motor vehicle need different corrections, its value is stored in the address relevant with number of pulses, need not to calculate the speed of a motor vehicle, the time-delay value of detecting device data handing is got whole sampling 1/2 of instrument pulse count of using tricks.For guarantee satisfy not install its time-delay under the label condition accurately, design amount of delay correction in the frame structure of electronic tag, it is worth big I by calculating or the measurement error amount obtains.
The frame structure of electronic tag: electronic tag producer: 1, keyword: 4, increase and decrease property: 1, milimeter number: 16, correction number: 6, parity check: 1, innings name: 7, the section name: 13, the line name: 12, row is other: 3, other: 64.
Realization in order to demonstrate the invention; above-mentioned specific embodiment has been described; but other variation of the present invention and modification; it will be apparent to those skilled in the art that, all belong to claim protection domain of the present invention in the essence of the disclosure of invention and any modification/variation in the fundamental principle scope or equivalent transformation.