RU191581U1 - Tram Stop Security System - Google Patents

Abstract

The utility model relates to road safety devices, in particular to signaling devices when stopping public transport. Essence: an alarm device when a tram stops, contains control units for door opening-closing mechanisms, a signaling signs power supply, a signaling signs power relay connected to a power source and output to the driver’s console, and a separate power supply relay for the door opening-closing mechanisms control units. Signals include a stop lamp laser mounted on the rear upper left corner of the tram with the possibility of projecting stop lines on the carriageway behind the tram, and a pedestrian crossing sign lamp mounted on the rear window of the tram and equipped with a rectangular pulse generator unit, the input of which is connected to output power supply signal signs. The device is additionally equipped with a delay relay, a step-up transformer and a logic gate unit. The output of the latter is connected to the power supply of the signal signs, one control input to the output of the step-up transformer, and the other input to the power supply of signal signs connected via a delay relay to the separate power relay of the control units for door opening and closing mechanisms that are connected to the step-up transformer . Moreover, the laser emitter of the brake light is connected in parallel with the lamp of the pedestrian crossing sign. Effect: increasing the safety of tram passengers in the process of boarding and disembarking. 2 ill.

Description

The utility model relates to road safety devices, in particular to signaling devices when stopping public transport.

Trams stop mainly on the carriageway in places not equipped with platforms for boarding and disembarking passengers. Vehicles following the tram must stop before the tram doors open to allow passengers to land. Tram stops are equipped with the “Tram Stop” sign placed above the carriageway and a yellow zigzag line marked on the carriageway. However, drivers often do not notice these signs and continue driving after the tram stops. Therefore, the stopping places of trams are a source of increased danger from the point of view of road safety. It is necessary to take measures to increase the information content about the moment the trams stop, guaranteeing the stop of vehicles following the tram.

There is a known circuit diagram of the electric motor drive mechanism for the door mechanism of the tram, related to low-voltage auxiliary circuits and containing a power switch for the door mechanism located on the driver’s console, and an actuator for opening the doors, providing simultaneous or separate door opening (depending on the design of the car) (see Tram T-3 cars. Ivanov MD, Ponomarev AA, Hieropolsky B.K. M.: "Transport", 1977, p. 199-200).

A disadvantage of the known design is the release of passengers on the roadway with the possible presence of moving vehicles, since there is no signaling that the tram has stopped for boarding and disembarking passengers, which does not provide high safety for tram passengers during boarding and disembarkation.

A device for alerting road users comprising a receiver, means for audibly and visually alerting a vehicle driver and means for visually warning pedestrians connected to outputs of a control unit for means for alerting a driver and means for alerting pedestrians, a communication unit with a vehicle braking system. Moreover, the visual alert means can be configured to display graphical and textual static or dynamic information by means of LEDs or a liquid crystal display (see RF patent No. 177452, G08G 1/00, B60Q 1/44).

However, the known device is not a sufficiently strong information signal for drivers of vehicles following the tram, due to the fact that the means of visual notification of drivers following the tram are in the peripheral zone of their vision, and the opening of the doors of the tram will occur regardless of the inclusion of visual Alerts Thus, this device does not allow for high safety of tram passengers during their boarding and disembarking.

To attract the attention of drivers, Glavkonstruktor company proposes to equip existing trams containing a signal sign power relay connected to an electric power source and separate power relays of control units for door opening and closing mechanisms, displayed on the driver’s console, with a laser brake light mounted on the rear upper in the left corner of the tram with the possibility of projecting stop lines on the carriageway behind the tram, in addition to the pedestrian crossing sign lamp installed on the rear window of the tram and with A rectangular pulse generator block, the input of which is connected to the output of the signal sign power supply unit (see http://glavconstructor.ru/laser-stop.html?REQUEST_URI=news/laser-stop.html).

The disadvantage of this technical solution is that the crosswalk sign lamp has a low brightness to attract the attention of drivers, and the flashing crosswalk sign turns on regardless of the opening of the tram doors, while the laser brake light comes on when the tram stops before opening the doors by pressing the corresponding button button, which complicates ensuring high safety of tram passengers during their boarding and disembarking in view of the increased number of necessary manipulations for the driver t Ramvay and, accordingly, the present human factor.

The essence of the claimed utility model lies in the fact that the signaling device when stopping the tram, containing control units for door opening and closing mechanisms, a power supply for signal signs, including a stop lamp laser emitter, mounted on the rear upper left corner of the tram with the possibility of projecting stop lines on the carriageway behind the tram, and a pedestrian crossing sign lamp mounted on the rear window of the tram and equipped with a rectangular pulse generator unit, the input of which is connected to the output ohm of the signal signs power supply, a signal signs power relay connected to a power source and output to the driver's console, and a separate power relay of the control units for door opening and closing mechanisms, according to the change, it is additionally equipped with a delay relay, a step-up transformer and a logic valve block, the output of which is connected with a power supply for signal signs, one of its control inputs - with the output of a step-up transformer, and another input - with a relay for power supply of signal signs connected via a delay relay LCDs with separate power relays for control units for door opening and closing mechanisms, which are connected to a step-up transformer, the laser stop lamp emitter being connected in parallel with a pedestrian crossing sign lamp.

The technical result provided by the claimed utility model is to increase the safety of tram passengers in the process of boarding and disembarking.

The utility model is illustrated by drawings, where:

- in FIG. 1 schematically shows a General view of the security system when the tram stops;

- in FIG. 2 schematically shows a block diagram of an alarm device when a tram stops.

Tram 1 is equipped with a pedestrian crossing 2 sign installed on the rear window of tram 1 and a laser stop light 3 mounted on the upper left rear corner of tram 1 with the possibility of projecting a stop line 4 on the carriageway behind tram 1, thereby ensuring reliable driver information about the need to stop for the passage of passengers of the tram 1 for their boarding and disembarking (Fig. 1). The block diagram of the alarm device contains blocks 5 for controlling mechanisms of opening and closing doors, a unit 6 for supplying signal signs, a relay 7 for supplying signal signs, connected to an electric power source 8 and output to the driver’s console (not shown in FIG.), And a relay 9 for separate supply of units 5 control mechanisms for opening and closing doors. Signals include a pedestrian crossing 2 sign lamp 10 and a stop lamp 3 laser emitter 11 provided with a rectangular pulse generator unit 12, the input of which is connected to the output of the signal sign power unit 6. The laser emitter 11 is connected in parallel with the lamp 10 of the pedestrian crossing sign 2. The signaling device when the tram is stopped is equipped with a delay relay 13, a step-up transformer 14 and a logic gate unit 15, the output of which is connected to the signal sign power supply unit 6, its one control input is with the step-up transformer output 14, and the other input with relay 7 power signal signs. Relay 7 is connected through a delay relay 13 to a relay 9 for separate power supply of control units 5 for door opening and closing mechanisms that are connected to a step-up transformer 14 (Fig. 1, 2).

The alarm device when the tram stops works as follows.

When the tram stops 1, the driver turns on the relay 7 power signal signals, displayed on the remote driver. In this case, the voltage through the block 15 of the logic gate and the block 12 of the square-wave pulse generator is supplied to the lamp 10 of the pedestrian crossing sign 2 and the laser emitter 11. Due to the varying voltage output by the block 12, the brightness of the signal of the lamp 10 and the laser emitter 11 changes visually observed as the blinking of the pedestrian crossing sign 2 and the projected stop lines 4. Opening the doors is possible only at a certain time delay after applying voltage to the lamp 10 and the laser emitter 11, provided delay relay 13. This is necessary to guarantee the stop of vehicles following behind the tram 1 to the roadway. The doors are opened separately by applying voltage through the relay 9 to the control units 5 of the door opening-closing mechanisms. When the doors are opened, the increased voltage through the transformer 14 and the blocks 6, 15 and 12 is supplied to the lamp 10 of the pedestrian crossing sign 2 and the laser emitter 11, thereby increasing the brightness of their glow. This serves as an additional information signal for drivers of vehicles. Block 15 of the logic gate provides the highest voltage to the lamp 10 signs of the pedestrian crossing 2 and the laser emitter 11 when applying voltage to the blocks 5 control mechanisms for opening and closing doors.

Thus, the inventive safety system when stopping the tram allows you to ensure high safety of the passengers of the tram during their landing.

Claims (1)

An alarm device when a tram stops, containing control units for door opening / closing mechanisms, a power supply for signal signs, which includes a stop lamp laser emitter mounted on the upper left rear corner of the tram with the possibility of projecting a stop line on the carriageway behind the tram, and a pedestrian sign lamp a transition mounted on the rear window of the tram and equipped with a rectangular pulse generator block, the input of which is connected to the output of the power supply of the signal signs, the power relay signs connected to a power source and a separate power relay of control units for door opening and closing mechanisms, displayed on the driver’s console, characterized in that it is additionally equipped with a delay relay, a step-up transformer and a logic valve unit, the output of which is connected to the signal sign power supply, one its control input is with the output of a step-up transformer, and the other input is with a signal sign power relay connected through a delay relay to a separate power relay of control units doors opening and closing, which are connected to a step-up transformer, the laser stop lamp emitter being connected in parallel with the pedestrian crossing sign lamp.

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