Device to alert people at railway pedestrian crossing about train approach

FIELD: transport.

SUBSTANCE: alert system comprises annunciator of approach to dangerous point connected via communication line with receiver arranged at locomotive, decoder, memory unit, gate multivibrator, three-input OR element, control circuit, reset pulse generator and people presence control pickups.

EFFECT: higher safety.

1 dwg, 1 tbl

 

The invention relates to a device for automatic notification of the approach of rolling stock to the zone pedestrian crossing over the railroad tracks at the same level with the head of rails.

Known automatic alarm at a pedestrian crossing over the railroad tracks, while providing an approximation of the rolling stock the inclusion of traffic lights pedestrian crossing and electric calls (1. Typical design decisions 411005-TPD. Pedestrian crossings equipped with sound and light alarm). Sensor oncoming train in such devices is the rail circuit. The disadvantages of the known devices is that the audible alarm is triggered when the approximation of the rolling stock to move regardless of the actual presence of citizens in the areas of pedestrian crossings and their locations, and the audio signal is often no means of rolling stock, and additional detectors placed in the area of the crosswalk. When driving on a pedestrian crossing, crossing two or more railway lines, this fact significantly complicates the identification of the actual position of the source of danger. Among the disadvantages we also note that the factor audible alarm even in the absence of citizens that negative the impact on the noise environment in the surrounding areas.

Also known device type motion sensors (presence) (2. The motion sensor MW-RS02. http://www.transistor.ru/pdf/arlight/booklets/booklet_mw - sensors.pdf), which is capable of controlling electrical devices and appliances when detecting people in the scanned area. The disadvantages of such devices is limited functionality.

The closest in technical essence is a device for warning of the approach to the obstacle (3. Device for warning of approaching an obstacle on the locomotive. A. S. No. SU 1643273 A1 B61L 3/04). This device consists of a track sensor placed in close proximity to the railroad tracks, and posted on the locomotive receiver unit alarm and acoustic signalling device (whistle of the locomotive). When the train was approaching the area of the signals from the sensor receiver to a received signal, generates a command for the block enable locomotive alarm sound whistle or Typhon locomotive.

This device and made for the prototype. The known device has the disadvantage. The device beeps without regard to the actual presence of people in areas of pedestrian crossing. The technical result of the invention is to improve the safety of citizens at a crosswalk with minimal noise impacts on the physical environment. This is especially true for areas commuter rail movement adjacent to residential buildings.

The invention consists in the following. Part of the prototype (3) that contains the proximity sensor to a dangerous place, linked by a communication channel with the receiver placed on the locomotive, the output of which is connected to the decoder, one output of which is connected to the memory block, the output of the memory block is in turn connected to the input of the one-shot, the output of the one-shot is connected to one of the three inputs Tregubova element OR to another input of the specified element connected rear contacts button (pedal) enable beep locomotive low volume output of the specified element OR connected to the input of the control circuit signal low volume locomotive, rear contacts button (pedal) enable beep locomotive and output the one-shot is connected to the inputs of the processing unit reset pulse, the output of which is connected to the reset input (erase data) of the memory block also includes a sensor to monitor the presence of people in the accumulation zone pedestrian crossing and the control sensor of the presence of people in the danger zone of ways and intertrack spaces, connected by a communication channel through the above-mentioned receiver and the connected decoder with two memory blocks, each of the outputs is Loka memory is connected to the input of the corresponding one-shot, the output of one of these odnovorov connected to the third input Tregubova element OR, as the output of another - to the input of another element OR, to the other input of which is connected the rear contacts button (pedal) high volume, the output of the specified element OR connected to the input of the control circuit signal high volume locomotive, the outputs of the two last-mentioned odnovorov and rear contacts button (pedal) high volume is also connected to the inputs of the processing unit reset pulse information in the last two blocks of memory.

The present invention is illustrated in the drawing, figure 1, on which the sensor 1 approximation to a dangerous place, sensor 2 control of presence of people in the accumulation zone pedestrian crossing and sensor 3 control of people's location in a hazardous area ways and intertrack spaces pedestrian crossing connected across a communication channel to the receiver 4, located on the locomotive, the output of the receiver is connected to the input of the decoder 5, one end of which is connected to the input of recording information in the memory unit 6, the output of which is connected the first one-shot 7, the output of which is connected to one of inputs Tregubova element OR 8, the output of which is connected to the input circuit 9 enable beep locomotive low-volume 10. To the second input Tregubova element is OR 8 connected to the rear contacts button (pedal) 11 enable beep locomotive small volume. The second output of the decoder 5 is connected to the input of the second memory block 12, the output of which is connected to the input of the one-shot 13, the output of the latter is connected to the third input Tregubova element OR 8. The third output of the decoder 5 is connected to the input of the memory unit 15, the output of which in turn is connected to one input of the OR element 16, the output of the specified element connected to the input circuit 17 enable beep locomotive large volume 18 locomotive. The outputs of odnovorov 7, 13, 18 are connected to respective inputs of the block 20 forming pulses reset, the outputs specified block is connected to the reset inputs of the respective memory blocks 6, 12, and 14. Block 20 pulse-forming discharge contains three identical chains, each of which consists of serially connected inverter signals corresponding to the one-shot and differentiating network, the output of which is connected to the reset input of the corresponding memory block 6, 12, or 14.

The operation of the device is as follows. When approaching the rolling stock to the placement of the pedestrian crossing on the distance range of the communication channel signals from sensors 1, 2 and 3 arrive at the receiver 4. From the output of the receiver, these signals are sent to the decoder 5. If the area of the pedestrian crossing and in the accumulation zone pedestrian crossing people do not, then the signal is high the level appears at the output of the decoder, associated with the input register of the memory unit 6. The same output signal from the memory unit 6 starts the one-shot 7. The output of the last signal of high level is generated at the time of 2-3 seconds. Through trehochkovoy element OR 8 this signal is fed to the input circuit 9 enable beep locomotive low-volume 10. The locomotive by pressing the button (pedal) 11 can forcibly increase the duration of the alarm or to give repeated signal. In this case, the signal will sound as long as the button is pressed (pedal) 11, and through the rear contacts of the specified button (pedal) a high signal appears at the second input trehochkovoy element OR 8. Further, the enable signal locomotive low-volume 10 is described above order.

When receiving the signal from the sensor 2 control of presence of people in the accumulation zone pedestrian crossing signal of high level appears at the input of the memory unit 12, which will lead to the inclusion of the one-shot 13 times 4-6 C. when the third input Tregubova element OR 8, this signal goes to the input circuit 9 enable beep locomotive low-volume 10 already for a longer time.

In that case, if sensor 3 control of people's location in a hazardous area ways and intertrack spaces pedestrian any are found, it is suitable the information received over the communication channel to the receiver 4, then on the third output of the decoder 5 is additionally formed a high signal, which will continue to be registered in the memory unit 14. The output signal from the memory unit 14 starts the one-shot 15. The output of the last signal of high level is generated at the time of 4-6 seconds. This signal, when input element OR 16, causes the formation of a high signal on the circuit 17 enable beep locomotive large volume 18 at the time specified in table 1.

Table 1
The algorithm selects the audio signal
The levels of the signals from the sensorsSound signals locomotive
Sensor 1 approaches the transitionSensor 2 (control fully funded areas)Sensor 3 (control zone path and intertrack spaces for pedestrian crossing)
000No signal
100Short St is the drain
duration 2-
3 sec
110Whistle long
of 4-6 sec
111The large signal
volume (ti
background) long
STU 4-6 sec

The locomotive by pressing the button (pedal) 19 may force to increase the duration of the alarm or to give repeated signal. In this case, the signal will sound as long as the button is pressed (pedal) 19, and through the rear contacts of the specified button (PE is Ali) a high signal appears at the second input trehochkovoy element OR 8. Further, the enable signal locomotive large volume 18 is described above order.

Reset information in each of the memory blocks occurs at points in time corresponding to the end of the positive pulse at the output of the corresponding one-shot, automatically through the block 20 pulse-forming discharge. Selective reset information in the memory blocks allows to take into account rapidly changing environment at pedestrian crossing, thereby providing high reliability alert citizens on pedestrian crossing signals corresponding level.

Sources of information

1. Typical design decisions 411005-TPD. Pedestrian crossings equipped with sound and light alarm. Roszheldorproject, M., 2010

2. The motion sensor MW-RS02. http://www.transistor.ru/pdf/arlight/booklets/booklet_mw-sensors.pdf.

3. Device for warning of approaching an obstacle on the locomotive. A. S. No. SU 1643273 A1 B61L 3/04.

Device alert citizens on a pedestrian crossing over the railroad tracks on the approximation of the rolling stock that contains the proximity sensor to a dangerous place, linked by a communication channel with the receiver placed on the locomotive, the output of which is connected to the decoder, one of the outputs of which are connected to the memory block, the output of the memory block is in turn connected to the input of the one-shot, Ihad the one-shot is connected to one of the three inputs Tregubova element OR to another input of the specified element connected rear contacts button (pedal) enable beep locomotive low volume output of the specified element OR connected to the input of the control circuit signal low volume locomotive, and the output of the one-shot is connected to one input of the processing unit reset pulse, the output of which is connected to the reset input (erase data) of the above-mentioned block memory, characterized in that it additionally has a sensor monitoring the presence of people in the accumulation zone pedestrian crossing and the control sensor of the presence of people in the danger zone of ways and intertrack spaces, linked by a communication channel through the above-mentioned receiver connected to the decoder, and the second and third outputs of the decoder are connected with two memory blocks, the output of one of these memory blocks is connected to the input of the corresponding one-shot, and the output of the one-shot is connected to one input Tregubova element OR, alternatively, the output of another memory block is connected to another one-shot, and the output of the one-shot is connected to one input of the second element OR, to the other input of which is connected the rear contacts button (pedal) high volume, thus the outputs of each of odnovorov individually connected to the reset inputs of the corresponding block is in memory through the forming unit impulse.



 

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