Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L29/00—Safety means for rail/road crossing traffic
  • B61L29/08—Operation of gates; Combined operation of gates and signals
  • B61L29/18—Operation by approaching rail vehicle or train
  • B61L29/22—Operation by approaching rail vehicle or train electrically
  • B61L29/226—Operation by approaching rail vehicle or train electrically using track-circuits, closed or short-circuited by train or using isolated rail-sections
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L29/00—Safety means for rail/road crossing traffic
  • B61L29/08—Operation of gates; Combined operation of gates and signals
  • B61L29/18—Operation by approaching rail vehicle or train
  • B61L29/22—Operation by approaching rail vehicle or train electrically
  • B61L29/222—Operation by approaching rail vehicle or train electrically using conductor circuits with separate contacts or conductors

Definitions

• the invention relates to a level crossing safety system with a level crossing controller for controlling any safety devices and a method for controlling such a level crossing safety system.
• Such switching means are based predominantly on wheel sensors, axle counting devices, loops or track circuits. Line conductor loops and other switching devices are also commonly used.
• the invention has for its object to provide a level crossing safety system and a method for its control, which allow a higher level of security, where ⁇ is to strive for the lowest possible cabling. According to the invention the object is achieved in that the
• the object is also achieved by a method in which it is provided that at least one track circuit and a wheel sensor switch min ⁇ least the level crossing controller independently.
• the occupancy information of the track circuit and the over-travel of the wheel sensor are used as two-channel diverse information for activating the level crossing protection system.
• the diverse sources ga ⁇ antee the independence of the control signals, at the same a mutual error revelation is possible in time.
• Even in low Bettungseigenschaften and / or track circuits unfavorable vehicle situations is due to the two-channel means of wheel sensor and track circuit egg ne high availability of the whole system and the Accessible ⁇ ness of a security level of SIL 3 or SIL 4.
• the United S ⁇ supply of Gleisstrom Vietnamese- and wheel sensor control also enables cost-effective design of crossing protection systems both in AREMA markets and in CENELEC markets.
• the track circuit is formed as an audio frequency track circuit with data transfer function and the wheel sensor is connected upstream in the direction of the railroad crossing, wherein the wheel sensor is connected to the transmitter of the track circuit.
• the track circuit he ⁇ stretches it over the entire approximate range from switch-on of the safety devices to the level crossing controller. At this switch-on is the transmitter of the track circuit to which the wheel sensor is connected ⁇ .
• the wheel sensor is mounted at a certain distance in front of the transmitter and wired up to this. In this way, the track circuit is used as a transmission medium for the signal of the wheel sensor to the level crossing controller, so that a complete wiring from the wheel sensor to the level crossing controller is unnecessary.
• the property of the audio frequency track circuit is exploited to provide a transfer function of a few bits. After crossing the rail vehicle via the wheel sensor, this information is forwarded via the track circuit to the level crossing controller. After that it reaches
• Rail vehicle which reports to the lane ⁇ transition controller quasi as a second channel, the assignment information.
• the information transmission from the first channel namely that of the wheel sensor signal, is interrupted by the track circuit. If one of these two channels or the transfer function should fail, lies an error occurs and the level crossing protection system switches to the safe failure state.
• identifier to substitution therapiesser- and velocity detection of an approaching the level crossing rail vehicle there is provided a Zeitdifferenzmes ⁇ solution between the vehicle passages more wheel sensors and / or a wheel sensor and the transmitter of the Gleisstromkrei ⁇ ses, wherein the switch-on of the securing means is dependent on the determined speed by the level crossing controller.
• This functionality which is increasingly required by railway operators, makes it possible in some cases to considerably reduce the waiting times of road users at the level crossing.
• the level crossing system is activated independently of the vehicle speed in a largely constant closing time before the arrival of the rail vehicle at the level crossing. This feature is known as> constant warning time ⁇ .
• the blocking time of the level crossing is thus optimized and shortened, especially in the case of very slow rail vehicles.
• At least one additional track circuit is provided for driving at least one track-side signal.
• This special track circuit provides data transfer in the reverse direction, ie from the level crossing controller to the signal.
• the trackside signal serves as a monitoring ⁇ signal and is only set to continue if the level crossing is secured.
• the track circuit be ⁇ tion
• the transmitter can be activated upon passage of a wheel sensor and deactivated upon passage of the level crossing controller.
• the track circuit is thus activated only during the time required functionality and disabled during the rest of the time, especially in one Sleep mode switched. This results in a reduction of the decentralized energy requirement.
• Figure 1 shows the operating principle of a level crossing Siche ⁇ assurance system
• Figure 2 shows a second configuration of the Bruübergangssi ⁇ assurance system of Figure 1 and
• FIG. 3 shows a third configuration of the Bruübergangssi ⁇ assurance system according to FIG. 1
• Figure 1 illustrates the essential components of a basic configuration of the claimed level crossing system.
• the railroad crossing 1 is secured on both sides by barriers 2 and warning signals 3 in thisbrooksbei ⁇ game.
• the safety devices 2, 3 are controlled by a level crossing controller 4.
• the partssinformati ⁇ ones of the level crossing controller 4, namely, whether a shift ⁇ nen poverty approaches the level crossing, 1 are generated by an audio frequency track circuit 5, and a wheel sensor. 6
• the wheel sensor 6 is connected upstream of the track circuit 5 in the direction of the railroad crossing 1, so that the wheel sensor 6 is passed by a rail vehicle approaching the railroad crossing 1 in front of the track circuit 5.
• the wheel sensor is connected via a signal line 7 to a transmitter 8 of the track circuit 5.
• the vehicle passage of the wheel sensor 6 is first forwarded to the train ⁇ transition controller 4 as a turn-on signal.
• the track circuit 5 functions in the formation of this first Sprinttra ⁇ supply channel only as a transmission medium. Only when the rail vehicle passes the transmitter side 8 of the DC circuit 5, the track circuit 5 is closed and generated in turn, a drive signal for the Bahnübergangscontrol ⁇ ler 4. This results in a second turn-on, which activates the level crossing controller 4 regardless of the Radsensor-turn-on.
• the edge sensor signal is preferably underbro ⁇ chen.
• FIG. 2 shows an extension of the basic configuration according to FIG. 1.
• a further audio frequency track circuit 10 is provided, which is connected to the track transition controller 4 at the transmitter end 11 and to a track-side signal 13 at the receiver 12.
• This monitoring signal 13 is provided by the level crossing controller 4 only on free ride when the security devices 2, 3 of the railroad crossing 1 have shut off the road. This results in a saving in signal cabling.
• FIG. 3 shows an embodiment with two wheel sensors 6 and 14 which are spaced apart from each other and which transmit via the track circuit transmitter 8 and the track circuit 5 timewise passage information to the level crossing controller 4.
• This dual-wheel sensor configuration also offers increased safety of the overall system.
• the embodiments according to FIG. 2 and FIG. 3 can be combined with one another, whereby additional track circuits and / or wheel sensors can additionally be incorporated.
• All configurations also offer the possibility of determining the speed of the rail vehicle by Time measurement from the first wheel sensor 6 to the transmitter 8 of the first track circuit 5 and / or from the other wheel sensor 14 to the first wheel sensor 6, so that the level crossing controller 4, the safety devices 2, 3 of the railroad crossing 1 can turn on speed dependent. This results in a time-optimized switch-on with a constant switch-on time and, above all, a shortening of the waiting times of the road users before the level crossing 1.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Train Traffic Observation, Control, And Security (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=56092921

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (1)

Citations (5)

Family Cites Families (4)

• 2015
  • 2015-06-17 DE DE102015211141.5A patent/DE102015211141A1/de not_active Withdrawn
• 2016
  • 2016-05-31 EP EP16726094.2A patent/EP3286061B1/de active Active
  • 2016-05-31 PL PL16726094T patent/PL3286061T3/pl unknown
  • 2016-05-31 WO PCT/EP2016/062266 patent/WO2016202575A1/de not_active Ceased

Patent Citations (5)

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