SU1197905A1 - Device for warning about train approaching pedestrian passage - Google Patents

Abstract

1. A DEVICE FOR NOTIFICATING A TRAIN APPROACH TO A TRANSITION VACATION THROUGH WAYS, containing a cable laid in a track on an approaching train site associated with a train time calculation unit for an approach section and with a locomotive signaling control unit whose output is connected to one input block generating alert commands whose output is connected to the input of the alarm control unit; Sound and light alarms are connected to the output, characterized in that, in order to increase accuracy, it is equipped with a block for determining the duration of crossing the road, a comparison unit, a block for setting the duration of a road crossing, an adder, key elements, pedestrian counters in the transition zone, entrances which are respectively associated with the first, second and third sensors of the presence of pedestrians in the transition zone, and the exits are connected to the first inputs of the first, second and third key elements, respectively The other inputs are connected to the first output of the comparison unit, the first outputs are connected to the input of the adder, and the other outputs are connected to one input of the unit specifying the transition time through the paths, the other input of which is connected to the output of the accumulator, and It is connected with one input of the comparator unit, the second and third inputs of which are connected with the output of the approach time counter of the train and the unit for calculating the train movement time along the approximation section, the output of which is connected to one Odom counter unit time approximation in (A ride, another comparison output coupled to another input of the block forming paging commands, and the third output - to another input of the time counter is approached trains. 2. The device according to claim 1, characterized in that the block for determining the duration of the passage through the paths contains a generator with co pulses and serially connected decade counters connected to its output, the outputs of the last of which are formed by the outputs of the block whose input is formed by the control input of the generator pulses.

Description

The invention relates to railway automation and can be used to signal the approach of trains, mainly to crossings over railway lines.

The purpose of the invention is to improve accuracy.

FIG. 1 shows a functional diagram of the proposed device; in fig. 2 - functional block diagram of determining the duration of the transition through the path.

The device contains for each way a slide 1, laid on the approach section, connected to the unit 2 for calculating the train movement time on the approach section and to the locomotive signaling control unit 3. The first, second and third 4-6 sensors for the presence of pedestrians in the transition zone, respectively, are connected to the inputs of the first, second and third 7-9 counters of the number of pedestrians in the transition zone, the outputs of which through the first, second, third 10-12 key elements are connected to the input of the adder 13 and the memory block 14 of the duration of the transition of the path, the output of which is connected to the input of the comparison unit 15, the signals from the output of which go to the block 16 for determining the duration of the passage through the paths and the block 17 for generating warning commands. The outputs of the alert command generation unit 17 via the signaling control unit 18 are connected to sound and light alarms 19 and 20. An approaching train 21 moves in the direction of a pedestrian crossing.

The unit 16 for determining the duration of the passage through the paths included in the device comprises a pulse generator 22 consisting of quartz 23, resistors 24 and 25, a capacitor 26, a counter 27, and a frequency divider 28 having decade counters 29-31.

The device works as follows.

When the train 21 enters the sensitivity zone of the skiff 1, the signal from it enters block 2 of calculating the train travel time in the approximation section, in which the train approach time tnn is calculated. The obtained value tnn is transmitted to comparison unit 15. At the same time, the first, second and third sensors 4-6 of the presence of pedestrians in the transition zone are turned on. If there are people in the danger zone of a pedestrian crossing, signals in the form of electrical impulses appear at the exit of sensors 4-6 for pedestrians, which are fed to the input of the first, second and third counters 7-9 of the number of pedestrians in the transition zone, and the adder 13 counts the total number people in dangerous

zone by summing the values recorded in the first, second and third 7–9 pedestrian counters in the transition zone. The signal from the adder 13 is fed to the input 5 of the memory block 14 of the duration of the transition of the path, which selects the estimated residence time of people in the transition zone tnep, depending on the number of people in the danger zone. The signal proportional to the time tnep enters the comparison block 15,

0 where at the same time a signal is given that is proportional to the approach time of the train tnn. If tnep-tnn: 0, then at the output of comparison block 15 a signal appears - logical "1, including block 17 for the world of warning commands. It generates an alert command and, through the alarm control unit 18, switches the sound and light signaling devices 19 and 20 to the mode of transition of the paths. If tnep-, comparison unit 15 includes a train approach time counter 16, and the first, second, and third 10-12 key elements are opened to pass signals to the adder 13 and the track transition time memory unit 14, where the time required for crossing the path is selected.

5 any number of people at a pedestrian crossing. From memory unit 14 of the duration of the transition, the signal enters comparison unit 15, where the signal from unit 16 simultaneously arrives, as a result of which the recorded transition time and the actual transition time are compared. If tnn-tnep O, the comparison unit 15 sends a signal to the alert command generation unit 17, which sends a command to the locomotive signaling control unit 3 to switch the sound and light alarms 19 and 20 to the train approach mode (transition prohibition). The locomotive signaling control unit 3 transmits a signal using a loop 1 to the locomotive of an approaching train 21 about the need to reduce speed. If tnn-tnep cO, then the comparison unit 15 transmits a signal to the alert command generation unit 17, the signal of which is supplied to the alarm control unit 18 to switch the sound and light signaling devices 19 and 20 to the transition resolution mode.

When using the device at level crossing, the pedestrian presence sensors 4-6 can record not only the transition of people, but 0 and transport units, and the rest of the work is carried out similarly to the indicated one.

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Claims (2)

1. DEVICE FOR NOTIFICATION OF TRAIN NEARING THE TRANSITION VIA THE WAY, containing a loop laid in a rut of the track at the train approaching section, connected to the train time calculation unit for the approach section and to the locomotive signaling control unit, the output of which is connected to one input of the forming unit alert commands, the output of which is connected to the input of the alarm control unit; the output of which is connected to sound and light alarms, characterized in that, in order to increase accuracy, it is equipped with a unit for determining the duration of the passage through the track, a comparison unit, a unit for setting the duration of the transition of the path, an adder, key elements, counters of the number of pedestrians in the transition zone, inputs which are respectively associated with the first, second and third sensors of pedestrians in the transition zone, and the outputs are connected to the first inputs of the first, second and third key elements, respectively Other inputs of which are connected to the first output of the comparison unit, the first outputs are connected to the input of the adder, and the other outputs are connected to one input of the unit for specifying the duration of the transition through the paths, the other input of which is connected to the output of the adder, and the output of the unit for specifying the duration of the transition through the paths is associated with one input comparator, second and third inputs of which are connected with the output of the train approaching the time counter and the time calculation unit of the train on the section _with zheniya approximation, the output of which is connected to one input of a SB etchika time approaching trains, the other output of the comparator is connected to another input command notification generation unit, and the third output - to another input of the time counter approaching trains. 2. The device according to π. 1, characterized in that the unit for determining the duration of the transition through the path contains a pulse generator and connected to its output series-connected decade counters, the outputs of the latter of which are formed by the outputs of the block, the input of which is formed by the control input of the pulse generator. SU, 1197905>