Background technology
Shunting service is the component part of railways train operation work, a large amount of shunting service that all will carry out every day at marshalling station, district station, freight station, passenger station and a part of intermediate station.For a long time, the work of shunting follows traditional mode of operation, and with hand signal aspect and indication commander shunting service, in case the generation problem, equipment is uncontrollable.Although relevant departments have adopted the various countermeasures of strengthening shunting safety, preventing accident in shunting operation, the accident in shunting operation sum reduces to some extent, but still is difficult to stop fully.According to statistics, the accident in shunting operation number of packages of railway generation accounts for the more than half of the total number of packages of whole train operation accidents.Accident in shunting operation mainly contains the conflict of shunting, the derailing of shunting, squeeze track switch, the shelves etc. of raming, mostly with fail in time to stop relevant by standard or instruction.
For addressing the above problem; Some areas have been equipped with like modern conveniencess such as the apparent system of flat shunting lamp, the monitored control systems of shunting in recent years; But it only provides convenience in informational linkage; Fundamentally shunting locomotive is not controlled, can't made the machine of shunting reach self-stopping purpose through equipment in case of necessity.The mode of shunting that the local plane marshalling system that adopts combines with LKJ, because the shunting service more complicated adds that signal is intensive, track does not have reasons such as sign indicating number, still can't fundamentally realize the automation safety precaution.Concrete reason is following:
(1) shunting signal is divided into blue lamp and white two kinds of expressions of lamp, and blue lamp is represented to stop, and white lamp is represented to pass through, and does not have cooresponding track code, and locomotive can't obtain the expression state of signal lamp automatically.Can only still because adjacent station track is nearer, thereby influence the accuracy of observing apart through the range estimation of locomotive bus attendant.
(2) locomotive has traction mode and advances two kinds of patterns in the shunting service.When locomotive was in traction, locomotive was in the car team front end, and locomotive bus attendant Ke is with Zhi Jie lookout signal STA representation.But when locomotive was in the propelling operation, locomotive was in the car team afterbody, and the locomotive bus attendant can't be looked at the signal STA representation by Zhi Jie, can only forward end shunter in time the place ahead information be passed to the locomotive bus attendant.
(3) the flat shunting lamp shows system's dependence front end shunter's range estimation or estimates and obtain the place ahead status information; Sending instruction (voice or lamp show) through the radio station then instructs the locomotive bus attendant to control accordingly; Owing to be subject between the radio station disturb; So cause the information that receives inaccurate, thereby cause maloperation.
(4) plane marshalling system and the LKJ device combination of some areas employing possessed self-stopping safeguard function, but equipment can't be obtained terrestrial information automatically, and still the manual command with locomotive bus attendant or shunter is a foundation.
(5) a part station monitored control system of shunting that adopts has been realized the real-time transmission of ground route state to locomotive row control equipment; Can be intuitively open and perimeter circuit takies situation and represents to locomotive bus attendant and row control equipment with route; But row control equipment is difficult to accurately grasp car team front end current location, and causes locomotive bus attendant Operating Complexity significantly to improve.Therefore, be difficult to the real effectively protection that realizes.
(6) shunting service running under power speed as prescribed must not be greater than 40 kilometers/hour, and the propelling running velocity must not be greater than 20 kilometers/hour.
The utility model content
The purpose of the utility model provides the railway train arrangement operation security protection system that a kind of shunting service is safe, the information of shunting transmission accurate, the degree of automation of shunting is high.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of railway train arrangement operation security protection system; At least two wayside equipments are set between former and later two shunting signals of every station track; Described wayside equipment is gathered the shunt status signal and the locomotive driving status signal of shunting signal; And sending the above-mentioned signal that collects to locomotive apparatus, above-mentioned signal sends to train controller after locomotive apparatus is handled.
Described locomotive apparatus is positioned at the head position of train, in the tail bit of train train tail apparatus is installed; Described train tail apparatus receives shunt status signal and the locomotive driving status signal near the wayside equipment transmission at tail position, and sends to locomotive apparatus to above-mentioned signal.
The shunting signal detecting unit that described wayside equipment comprises power subsystem unit and is connected with power subsystem unit, the incoming signal of shunting signal detecting unit are the blue lamp or the red light power supply signal of shunting signal; The shunting signal detecting unit status signal of will shunting is delivered in the modulating unit, and the status signal of shunting sends to locomotive apparatus through communication unit after modulating.
Described power subsystem unit will from the main filament of the blue lamp of shunting signal output or red light and auxiliary filament respectively behind the rectifying and wave-filtering series diode export; At last that the diode rear end of two lamps output is parallelly connected, for wayside equipment provides working power.
Four wayside equipments are set between former and later two shunting signals of every station track, and wherein two wayside equipments are near preceding shunting signal, and two wayside equipments are near the back shunting signal; All will the shunt time of reception signal of status signal of each wayside equipment sends locomotive apparatus to, and above-mentioned time of reception signal is the locomotive driving status signal.
8-12 rice also is provided with wayside equipment in first speed the place ahead of track.
Adopt the utility model of technique scheme, have the following advantages:
(1) the utility model during near the shunting signal certain distance, can promptly and accurately obtain shunting signal STA representation and current location at car team front end or tail end.
(2) utility model during near stub end siding first gear position certain distance, can promptly and accurately be obtained car team front end or tail end current location at car team front end or tail end.
(3) the utility model passes to row control device in real time with the state of shunting signal and car team front end or tail end position, takes to force the automatic stop action where necessary for row control device condition is provided.
(4) setting of wayside equipment is associated with current of traffic, and system equipment possesses the current of traffic judgement.
(5) the shunting signal STA representation information obtained of train front end or tail end device can be transferred to these row locomotive targetedly, has avoided near other operation locomotive operation influence.
(6) the utility model satisfies the principle of design of railways train operation breakdown of equipment failure to the safe side, possesses perfect closed loop self check, status alert, safety guiding mechanism; Simultaneously train tail apparatus satisfy be easy to carry, fast load and unload, power supply and necessary protection grade condition.
The specific embodiment
As shown in Figure 1; Railway train arrangement operation security protection system in the utility model; It is provided with two wayside equipments 3 between former and later two shunting signals 2 of every station track 1, promptly at the rear of preceding shunting signal 2-1 8-12 rice, the place ahead 8-12 rice of shunting signal 2-2 is provided with wayside equipment 3 in the back; In addition, also wayside equipment 3 also is set at first speed 7 the place ahead 8-12 rice of track; Above-mentioned wayside equipment 3 is gathered the shunt status signal and the locomotive driving status signal of shunting signal 2, and sends the above-mentioned signal that collects to locomotive apparatus 4, and above-mentioned signal sends to train controller 6 after locomotive apparatus 4 is handled.And the information sender formula in the utility model is with reference to responser " transponder device specification " A mouth uplink communication mode.
In general, locomotive apparatus 4 is positioned at the head position of train.When train was long, being positioned near the back wayside equipment of shunting signal 2-2 can't send signal to locomotive apparatus 4, so at the tail position of train train tail apparatus is installed.Like this, receive shunt status signal and locomotive driving status signal, and then give locomotive apparatus 4 above-mentioned signal forwarding near wayside equipment 3 transmissions at tail position by train tail apparatus 5.
As shown in Figure 2, above-mentioned wayside equipment 3 is made up of power subsystem unit, shunting signal detecting unit, modulating unit and communication unit.Wherein, power subsystem unit is the power supply of shunting signal detecting unit, and its power supply derives from the blue lamp intelligence lighting unit and the red light intelligence lighting unit of shunting signal 2, and the whichever lighting unit has electricity just can supply power for total system.Simultaneously, this is also for judging that this moment, shunting signal 2 was that red light is bright or Bai Dengliang provides foundation, so in the utility model, the incoming signal of shunting signal detecting unit is the blue lamp power supply signal or the red light power supply signal of shunting signal 2; The shunting signal detecting unit status signal of will shunting is delivered in the modulating unit, and the status signal of shunting sends to locomotive apparatus 4 through communication unit after modulating.
Specifically, as shown in Figure 3, power subsystem unit will from the blue lamp main filament of shunting signal output and auxiliary filament respectively after the rectifying and wave-filtering parallel connection series diode export.So just can be for system provide power supply as long as blue lamp is bright, and the foundation that provides it whether to work for system.Increase detecting unit in like manner with series diode output after red light main filament and the parallel connection of auxiliary filament difference rectifying and wave-filtering, and at the front end of diode.So just can be for system provide power supply as long as red light is bright, and the foundation that provides it whether to work for system.With the diode rear end parallel connection of two lamps output, its mouth through output power supply after the voltage stabilizer voltage stabilizing, just provides working power for wayside equipment 3 more at last.
As shown in Figure 3, the shunting signal detecting unit is realized based on the method for FPGA+DDS+EEPROM.The blue lamp power supply signal or the red light power supply signal of its input end collection are voltage signal, when voltage, think logical one, then think logical zero during no-voltage.Give FPGA with the logic that detects, FPGA judges it is that Lan Dengliang or red light are bright according to logical relation, thereby the original message that will be stored among the EEPROM extracts, and control DDS produces needed modulation signal, then with signal output.Modulation waveform is carried out resonator, filter through one-level earlier by FPGA control DDS output back; And amplification makes it promote Technitron amplification after antenna coupling output in advance; Horsepower output is about 100mW; Satisfying with the feedway is the center, becomes in horn-like 1 meter scope and can normally receive, and be unlikely to interfere with the track that other close on.Antenna uses being made of one of printed board antenna, and antenna parameter is relatively more consistent, only needs increase and decrease electric capacity that impedance is mated slightly and gets final product.
As shown in Figure 5, judge the service direction of locomotive for making locomotive apparatus, and judge according to service direction whether message is effective.The utility model is provided with four wayside equipments 3 between former and later two shunting signals 2 of every station track 1, wherein two wayside equipments are near preceding shunting signal 2-1, and two wayside equipments are near back shunting signal 2-2.Shunting signal 2-1 was an example in the past, wayside equipment 3A was set apart from 10 meters of shunting signals at its rear, wayside equipment 3B was set again apart from 15 meters of back shunting signals.And all will the shunt time of reception signal of status signal of each wayside equipment 3 sends locomotive apparatus 4 to, and above-mentioned time of reception signal is the locomotive driving status signal.Like this, receive wayside equipment 3B message earlier when locomotive apparatus 4, receive wayside equipment 3A message again, explanation is the forward operation, and message is effective.Receive wayside equipment 3A message earlier when locomotive apparatus, receive wayside equipment 3B message again, explanation is an inverted running, and message is invalid.
As shown in Figure 6, train tail apparatus is made up of antenna demodulator circuit, FPGA, master control ARM, indicating circuit, power supply and data radio station.Antenna receives the simulate data that wayside equipment sends out, and after demodulator circuit and FPGA demodulation, digital message is sent to master control ARM, and ARM is sent to locomotive apparatus through data radio station with message.Need to prove, too far away because of train tail apparatus apart from locomotive apparatus 4, add that train tail apparatus 5 needs often dismounting, so data transmission adopts wireless mode, preferably adopts data radio station to carry out communication; In addition, power supply is whole device power supply, and indicating circuit is used to indicate the height of electric weight and the state of data radio station transceive data.Train tail apparatus can't use external power source, often adds artificial dismounting, is its power supply so must select the battery of high safety.What the utility model was selected for use is the high-performance lithium battery, and this battery life is long, and capacity is big, and volume is little; In light weight, safe and reliable, under the sharp impacts explosion phenomenon can not appear yet; Working temperature range is wide, and 20 ℃ of-70 ℃ of following normal operation of Ke Zai – can satisfy outdoor range of temperatures; And be packaged together with charge-discharge protection circuit, by the dump energy that ARM detects battery in real time, give locomotive apparatus with heartbeat packet through data radio station.
As shown in Figure 7, the signal that comes out from antenna and demodulator circuit will pass through to amplify and transform into fsk signal and just can be input to FPGA and carry out data parsing.If it is do not adopt automatic gain to amplify, in the time of then can causing train tail apparatus just to get into the wayside equipment zone of action, inaccurate even can't resolve because of the too little packet parsing of signal.The groundwork of FPGA is that the fsk signal that the amplifier chip is sent here is resolved, and gives follow-up ARM with the result who resolves and handles.The center carrier frequence of message is 4.234MHz, and upper side frequency and lower side frequency are respectively 3.952MHz and 4.516MHz.In order preferably 3.952MHz and two frequency separations of 4.516MHz to be come, need the work clock of FPGA to reach 240MHz.
For ease of 5 convenient installations of train tail apparatus when shunting, the mode that adopts magnet to be adsorbed on the row tail is installed.For making train tail apparatus can accurately receive the information of wayside equipment; During installation, on the sleeper below the row tail, place an emissive source, emitted energy is equal to or less than wayside equipment; When mobile train tail apparatus makes its data that can accurately receive emissive source; Train tail apparatus fixed get final product, so just can accurately find optimum reception point position, make the utility model reach optimum technique effect.
As shown in Figure 8, locomotive apparatus 4 is by main frame and two receiving elements.Wherein, main frame is installed on locomotive inside, and two receiving elements are installed in the front-end and back-end of vent external, and all is connected with main frame.
Main frame is made up of power supply, master control ARM, master cock, data radio station, receiving element interface, LKJ interface, indicating circuit.Need to prove; Train tail apparatus adds two receiving elements of locomotive apparatus; Having three receiving wires works simultaneously; For confirming that which antenna work effectively and the trouble free service of support system, is provided with a master cock and is used to inform that which receiving wire of master control ARM is effective on main frame, thus the safe and reliable work of support system.In addition, for communicating with train tail apparatus, the power of data radio station within the specific limits, like this, the data that collect both can be accurate to and had reached locomotive apparatus 4, can not influence the communication between adjacent station track again.
The receiving element design is with the antenna receiving unit of train tail apparatus.Receiving element is installed in bottom, locomotive rear and front end, and the vertical distance that guarantees receiving element and wayside equipment during installation uses coaxial cable to connect within efficient range between receiving element and the main frame.
A kind of based on the above-mentioned automatic shunting method of shunting automatic protective system and realizing, it comprises the steps:
1., shunting signal 2 shows blue lamp/red signal, this moment, blue lamp/red light power supply was exported to wayside equipment 3, for wayside equipment 3 provides power supply;
2., wayside equipment 3 judges the lighting lamp state of shunting signal 2 according to power supply source, thereby obtain the status signal of shunting, and the status signal of will shunting converts message information to according to the coded system of responser message and through the harmonic ringing emission;
3., during through wayside equipment 3, receive the signal of wayside equipment 3, and be transferred to locomotive apparatus 4 through communication or transmission manner at the antenna of the train tail apparatus of system or locomotive apparatus;
4., locomotive apparatus 4 will shunt and send to train controller 6 after status signal is handled, and finally send parking/operating instruction by train controller 6.
When between former and later two shunting signals 2 in every station track 1 four wayside equipments 3 being set, wherein two wayside equipments are near preceding shunting signal 2-1, and two wayside equipments are near back shunting signal 2-2; All will the shunt time of reception signal of status signal of each wayside equipment 3 sends locomotive apparatus 4 to, after locomotive apparatus 4 is handled, sends to train controller 6 again; Above-mentioned time of reception signal is the locomotive driving status signal, and train controller 6 is judged the service direction of train, thereby sent parking/continuation operating instruction according to the locomotive driving status signal.