RU1799780C - Acoustic signalling device for locomotive - Google Patents

Abstract

Usage: the proposed device relates to acoustic signaling devices and is designed to increase reliability and serves to ensure the safety of working in hazardous areas of railways. SUMMARY OF THE INVENTION: the mode selection unit includes a speed meter 7, a motion start sensor 8 into a motion switch of a locomotive 9, and a clock 5 is made controllable. 1 ill.

Description

The present invention relates to acoustic signaling devices. It is intended to ensure the safety of workers working in hazardous areas of railways.

The aim of the invention is to increase reliability.

The drawing shows a diagram of the proposed device.

The figure shows a loudspeaker 1 connected to the output of a controlled power amplifier 2, connected to the output of a controlled tone generator 3. The input of the latter is connected to the output of a controlled driver of pulse widths A, connected to the output of a controlled clock generator

5. The control inputs of blocks 2,3,4 are connected via the control bus with the outputs 1,2,3 of the mode selection block b, and the control input of block 5 is connected to the additional output of the mode selection block 6. The speed meter 7 is a part of the mode selection block , locomotive start sensor 8, locomotive type of motion switch 9. Power pole via speed contacts flit) km / h, 0-20 km / h, 0-km / h, 0-km / h speed meter connected to the main outputs 1,2,3, and through the start of motion sensor 8 and the kind of locomotive motion switch with the fourth output of the control unit

6.

The device operates as follows.

When a single locomotive is moving, the operator sets the motion switch 9 to the closed position. If the movement has not yet begun and the locomotive is facing a closed signal, then no sound notification will be given. After the signal is opened and the motion starts, the contact of the motion sensor 8.0t of the power supply pole is closed through the sensor 8 and the LOG signal is generated by the switch 9. 1 of the control, which is supplied from the auxiliary output 6 to the control gathering of the clock 5. The brake disengages and starts to output rectangular clock pulses. Through generating pulse durations 4, which increases the duration of the clock pulses, this sequence goes to the controlled tone generator 3, where the pulses are filled with a tone signal of a certain frequency. Then the tone signal is supplied to the controlled power amplifier 2 and to the loudspeaker 1. At the same time, an acoustic signal of that power is emitted with the frequency and frequency that corresponds to

control signal at the main outputs of the mode selector 6. The speaker and tone frequency settings are selected depending on the speed

locomotive movements. In addition, as the speed increases, the frequency of the acoustic signal increases. Pauses are shorter, the signal is alarming. An example is the following characteristics of an acoustic signal:

km / hR, dB F, Hz g, im (s) 10 60 100 4 20 70 150 2 40 90 200 1,5

60 100 1200 1

The control signal of the signaling device is generated in the mode selection block 6 by means of the contacts of the speed meter 7, from the pole of the power supply through closed

contacts 0-10 km / h, 0-20 km / h, 0-S, km / h a high level of LOG voltage is applied. As speed increases, the contacts alternately open, one after another, while LOG.1 goes into

LGO.O. As a speed meter, you can use a typical type SL-2M. The contact opening can be adjusted at the following speeds: 0-10 km / h - 1C km / h, 0-20 km / h - 20 km / h, - 40 km / h. 0-UKZ GO km / h mechanically.

A controlled power amplifier essentially performs the function of a volume control; it can be performed according to one of the schemes known in the literature (5). Management

tonal generator and controlled

0

a pulse width former is implemented according to the known scheme (8). A controllable clock is also known and easy to implement. Thus, 0 the proposed device has the advantages. which do not have the indicated analogues, namely:

- the signal is given only when driving

5 - the signal is periodic and is given regardless of the driver (in the single-follow mode, the mode of greatest injury risk)

- the acoustic warning signal is controlled depending on the speed of the locomotive, i.e. speed affects the stopping distance and the safe transition distance. In this case, the sound pressure, frequency and frequency are regulated.

- changing the volume will not

only increase the reliability of alerts and

expand functionality

. alarm, but also improve comfort,

residential areas adjacent to the station and

others in safe working places.

Claims (1)

SUMMARY OF THE INVENTION An acoustic signaling device for a locomotive comprising a clock generator, a loudspeaker coupled through a controlled power amplifier and a controlled tone generator with a controlled pulse shaper, the control inputs of which are connected respectively to the first, second and third outputs of the selection unit -clips, characterized in that, in order to increase reliability, the fourth output of the mode selection block is connected to the control input of the clock generator, the output of 5 which is connected to the information input of a controlled pulse width former, the mode selection unit comprising a speed meter, a locomotive motion switch, the outputs of the mode selection unit are formed by the front contacts of the zero speed meter 0-10 km / h, speed 0-20 km / h, speed 0 - Already and speeds of 0-Ukzh km, the common contacts of which are parallelized and connected to the pole of the power source, to which the switch of kind of motion of the locomotive and the closing contact of the sensor are connected in series movement, which is formed by a fourth output mode selection unit.