Background technology
The Contact Line Detection car is the special-use vehicle that is used for the electrification railway contact net parameter testing, is a mobile complex laboratory.Inspection vehicle travels on the electric traction section, is used to detect the geometric position parameter of contact system, comprises stagger, lead height, the intersegmental distance of anchor, line trouble, the lead gradient, the registration arm gradient; Dynamical parameter is as bow net contact pressure, elasticity, bow net impact acceleration, off-line, vehicle dynamic compensation value, running velocity; Electric parameter is as contact system voltage; Ambient temperature and line parameter circuit value as station, interval, mileage, bar position etc., as calculated after the machine analyzing and processing, will occur or potential problem notice maintenance department, provide guidance for the state maintenance of power supply department provides foundation and supervisory management zone to carry out macro-control.
The overhead corresponding contact net for power supplying that is provided with of downline is that the supporting mechanism by contact system sets up and locatees, and wherein electric pole is the pillar of erecting contact net, is main and most important supporting mechanism.The supporting mechanism of other corresponding form is in addition located in this external bridge and tunnel etc.These supporting mechanisms all are the locating points of contact system, can be referred to as electric pole.Always adopt a registration arm (metal bar that about 30mm is thick) on the electric pole, contact system is positioned.On electrification railway contact net, for guaranteeing the abrasion of pantograph bow face evenly, therefore contact wire is forced to be the setting of " it " font, registration arm is also corresponding to distribute to both sides, the one end is fixed on the contact wire, and the other end is separately fixed at along on the electric pole of electrified railway line both sides serial arrangement and number consecutively.The bar position is the position of electric pole, the numbering of each electric pole at affiliated station or the interval all be unique, therefore, always with basic coordinates such as station or interval, electric pole numbering etc. as the inspection vehicle test data.In testing process, the position of the electric pole with particular number of inspection vehicle process is tested in requirement exactly, so that with the data of detection and the operating mode of actual track, strict corresponding as station, interval, electric pole numbering etc., otherwise the error situation that the data that detection obtains will occur fastening one person's story upon another person.
The early stage device that on the electrification railway contact net inspection vehicle, is used for the test rod position, be to be foundation with the original design data bank to railway relevant rod along the line position that is stored in the computing machine, the range pulse mode of combining that obtains with the speed sensor that is cooperated by axletree positions.Name storage respectively and set up circuit information database promptly at first with the numbering of each bar circuit, each station or interval, each electric pole and the information such as distance between the electric pole, and by up-downlink direction.When inspection vehicle brings into operation, operating personal is confirmed the position at its place earlier, as title, up-downlink direction, station or the interval title of circuit, apart from numbering of the nearest the place ahead electric pole of inspection vehicle etc., the database information of corresponding line and direction in calling computing machine, and database data and tested actual field are associated by cooresponding station or interval title, electric pole numbering.Along with the operation of inspection vehicle, distance between cooresponding electric pole and the range pulse calculated distance comparison that obtains from speed sensor, when both were equal, next bar position had been arrived in identification, and so carry out successively the location.Because this test process and principle are not directly to test the position at the actual place of electric pole, but the distance of calculating by range pulse, i.e. the spacing of the two adjacent electric poles of depositing in the data-driven storehouse is inferred out the position of each electric pole successively.So the time is long slightly, causes the cumulative errors of distance easily.Its reason is from speed sensor.Because inspection vehicle is in operational process, all causes the cumulative errors of range pulse easily as slip, serpentine locomotion and the various random vibrations etc. of wheel, thereby influence locating accuracy.Facts have proved that its error amount is generally the dislocation that may have 1 electric pole about 1 kilometer.
For addressing the above problem, present improved inspection vehicle is the equipment that has increased test electric pole steady arm on original basis.Inspection vehicle is when section operation, the electric pole test can be proofreaied and correct in early days with the database combination range pulse location cumulative errors that mode of operation was caused, that is: if range pulse according to two adjacent pole clearances in the data bank the leading or several meters location that lag behind, but in case test the electric pole signal, even if the distance of range pulse and data bank is unequal, also will be unconditionally the new bar position starting point of the electric pole test point of reality as the range pulse counting, thereby can eliminate the accumulation of error, for real correct starting point is provided data bank and cooperating of range pulse.This improvement has had bigger development on the basis of original inspection vehicle, though can eliminate the cumulative errors between two electric poles to a certain extent, but because the unnecessary interference that intersects background of the also wired trouble in top (with the corresponding top of track switch) of inspection vehicle process, anchor section (the thread-changing junction of contact wire), bridge, tunnel and other, can bring new measurement mushing error again, system detected still be difficult to really satisfy actual needs.
The utility model content
The purpose of this utility model is to provide a kind of electrification railway contact net of new model inspection vehicle bar bit test device for addressing the above problem, it is tested on the basis that combines in existing electric pole test and range pulse, the bar bit test device of inspection vehicle can be tested and the comprehensive location of mutual verification realization from different perspectives by the different operating unit that can cooperatively interact, with the cumulative errors and the multiple mushing error of proofreading and correct and the elimination system locatees, and can also further realize discerning the effect of the station track that inspection vehicle passes through a station, inspection vehicle is had important and practical meanings.
The bar bit test device of the utility model electrification railway contact net inspection vehicle, be at present by on the data handling machine that stores route lever position information database and the basis that comprises the data processing system that electric pole detecting unit that is arranged on the inspection vehicle pantograph and the range pulse structure of being controlled by the speed sensor that cooperates with axletree connect respectively, in said this data processing system, also be provided with and the joining gps satellite positioning unit of data handling machine.
Receiving wire in the above-mentioned gps satellite positioning unit can be arranged on the appropriate position of inspection vehicle roof, and satellite receiving equipment can be selected the product of U.S. AD company for use, and it can be placed near the of the interior computing machine of car or other appropriate position.The front end of satellite positioning reception facilities links to each other with antenna, and the rear end connects with computing machine (for example can select the computing machine of models such as RS232C for use).According to the GPS positioning principle, inspection vehicle can be determined the locating datas such as longitude, latitude and height coordinate of its position by the signal of the aerial respective satellite in reception facilities search sky when operation.
Speed sensor in the device can be provided with in the usual way, generally can be fixed on the journal box lid of inspection vehicle, can select the sensor of the forms such as optical rotary encoder used always, reaches the DF16 sensor of plant produced etc. as Shanghai Germany and Italy.The rotating shaft of speed sensor can be rotated synchronously with the inspection vehicle axletree, and 1000 range pulse signals of output whenever circle.By at the PCI circuit card that has counting machine of computer installation (as selecting OEM plug-in card such as PCI720 Industry Control plug-in card for use), by rolling counters forward after simple computation can obtain being used for the inspection vehicle travel distance of bar position location discriminant information.
Before test was started working, GPS at first created electronic chart and stores data according to inspection vehicle position coordinate to anchor section, bridge, tunnel and other special backgrounds of the trouble of the line above each station of comprising the station track, electric pole, the track switch, contact wire thread-changing junction in operational process.Repeated usage when these correct position coordinate datas can be provided with afterwards same circuit being tested.According to the GPS positioning principle, in the inspection vehicle work during through a certain ad-hoc location in the electronic chart, cooresponding position coordinate can be sent into data handling machine, as first kind of information of bar position differentiation, the i.e. locating information of positions such as the circuit at inspection vehicle place, station track, station or interval, bridge, tunnel.
Inspection vehicle between the test section in when operation, data handling machine is on the basis of the above-mentioned locating information that is obtained by GPS, by the present existing electric pole detecting unit that uses, can further proofread and correct the cumulative errors that the range pulse locate mode that obtained by raw data base and speed sensor is caused.
Because the gps satellite locating information is a kind of absolute information that does not rely on artificial position-finding situation, after it participates in detection and location, can be used for determining concrete interval, circuit and the position (comprising the station track) at inspection vehicle place on the one hand, can also have the interference effect of the detected multiple improper positioning signal of shielding electric pole test cell on the other hand the system location.For example to of the interference of the detected inspection vehicle of electric pole test cell through line trouble, anchor section, bridge, tunnel and other unnecessary intersection backgrounds of top, only need the corresponding locating information in the electronic chart and GPS locating information and data bank and range pulse located and mutually combine, can can eliminate on the basis of system's cumulative errors at present, further having eliminated effectively by the electric pole detecting unit has detected superfluous signals such as a plurality of registration arms place at anchor section, line trouble, bridge, tunnel or an electric pole, thereby obtains bar position locating data accurately.
Because the participation of gps satellite locating information the location, inspection vehicle is when passing through each station track at certain station, mutually combine by other three kinds of information and the corresponding with it electronic map information of setting up, just can identify at an easy rate during the location inspection vehicle the station track at certain station of process.And the meaning that knowledge is debated in the station track is to avoid the overlapping of each station track catenary ' s parameters and obscures, thereby have great importance.This is that other proving installation all is difficult to realize at present.
On the basis of above-mentioned bar bit test apparatus structure, but the sacrificial vessel body is implemented with reference to one of mode, be make said this electric pole detecting unit for the light window that is provided with in pantograph mid point both sides vertically towards above the Photoelectric infrared switch structure, its position, place should be respectively in the drop shadow spread of registration arm on pantograph that is connected with contact system.In one embodiment, the electric pole detecting unit of said Photoelectric infrared switch version is to adopt symmetric mode to be arranged on the position, mid point both sides of pantograph.
Because pantograph is directly to contact with the contact system of 25KV high tension cord, therefore the signal that is detected by Photoelectric infrared switch generally can not be directly connected to computing machine, needs to handle through the appropriate signals converting unit.Can supply among the embodiment of enforcement reference, include in said this signal conversion unit and the joining electricity of electric pole detecting unit/light transformational structure, for example can select the products such as S-BFDL-816T control code optical sender of the grand photoelectricity technology corporation, Ltd. of Beijing light for use, the signal of high-pressure side is done the electric light conversion, then through the Optical Fiber Transmission structure, for example can adopt the above high speed fibre of 10M to be sent to low tension terminal, again through corresponding light/electric transformational structure, after for example can selecting products such as the S-BFDL-816R control code photoreceiver conversion of the grand photoelectricity technology corporation, Ltd. of Beijing light for use, send into computing machine as the discriminant information of bar position.
Below in conjunction with by the specific embodiment shown in the drawings as embodiment, foregoing of the present utility model is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made include in scope of the present utility model.