RU32950U1 - Radio control device for lighting landing platforms - Google Patents

Description

DEVICE FOR RADIO CONTROL OF LIGHTING OF NOSATORY NLATFORM

Useful model relate; to radio engineering, and more specifically to radio telemechanics devices, and is intended to control the lighting of landing platforms at railway stations.

A device for receiving an address call containing a switch, a signal converter, a comparison unit, an integrator, a resolving unit, a generator, a frequency divider, a control register, descrambler, bistable element and pulse selector 1.

The disadvantage of this device is the need for continuous signal transmission for the operation of the decisive unit, which leads to an increase in the busy time of the radio channel and prevents the transmission of other signals.

A device for receiving a signal in a radio control system is also known, comprising a demodulator, a bandpass filter, a rectifier, a DC amplifier, an integrator, a threshold element, a decoder and an actuator 2.

The disadvantage of this device is the need for continuous signal transmission to maintain the actuator in the on state, which leads to an increase in the busy time of the radio channel.

This technical solution is selected as a prototype.

The technical goal is to reduce the busy time of the radio channel when transmitting radio control signals.

The technical goal is achieved by the fact that in a known device containing sequentially connected demodulator, a bandpass filter, a rectifier, a DC amplifier, an integrator and a threshold element, an AND logic element is additionally introduced, the first input of which is connected to the output of the threshold element, photo relay, output

§I7

R R YIPR iMPK: N 04 Q 7/00 which is connected to the second input of the logical element AND,

an asynchronous RS-flip-flop, the input S of which is connected to the output of the logical element And, a generator, whose input is connected to the output of the asynchronous RS-flip-flop, a counter, whose input is connected to the output of the generator, and the output of the counter is connected to the input R of the asynchronous RS-flip-flop, lighting control relay, whose input is connected to the output of an asynchronous RS-trigger.

Reducing the busy time of the radio channel is achieved by the fact that the signal received by the proposed device is stored in an asynchronous RS-trigger, which keeps the lighting control relay in the on state. The time spent on the lighting control relay in the on state is limited by the operating time of the generator and counter.

A diagram of the proposed device radio control lighting landing platforms is presented in FIG. 1.

The proposed device contains a demodulator 1, a bandpass filter 2, a rectifier 3, a DC amplifier 4, an integrator 5, a threshold element 6, a logical element And 7, a photo relay 8, an asynchronous RS-trigger 9 with inputs S 10 and R 11, a generator 12, a counter 13 and lighting control relay 14.

The principle of operation of the proposed device is as follows. To turn on the lighting, the radio control system transmits a signal that passes from the receiver to demodulator 1. At the output of the demodulator, an audio frequency is emitted, for example 2100 Hz, for which a bandpass filter is tuned 2. Rectifier 3 converts the audio frequency signal to direct current, which is amplified by a DC amplifier 4 The generator 5 and the threshold element 6 protect the proposed device from false alarms that can occur due to powerful interference with a short duration of action. The logic element And 7 is controlled using a photo relay 8. In the bright

2 time of day, when lighting is not needed, photo relay blocks operation

logical element I. In the dark, the logical element And is unlocked, and the signal from the output of the threshold element passes to input S 10 of the asynchronous RS-trigger 9. To switch the asynchronous RS-trigger, a short signal at input S is enough. When the asynchronous RS-trigger switches to a signal appears that enables the operation of the generator 12 and the counter 13 and turns on the lighting control relay 14. The generator and the counter are designed to form a time interval during which the lighting remains on. When the counter counts the predetermined number of pulses of the generator, the signal from the output of the counter will go to the input R of the asynchronous RS-trigger, which will switch and turn off the lighting control relay. In this case, the shutdown signal from the output of the asynchronous RS-trigger will switch the counter to the zero state (the counter will reset).

A comparative analysis of the claimed device with the prototype shows that the proposed solution is distinguished by the nalgchy new blocks (logical element And, photo relay, asynchronous RS-trigger, generator and counter) and new connections between the elements of the proposed device.

Comparison of the proposed device with other technical solutions shows that the newly introduced blocks are known. However, their introduction into the inventive device in these relationships with the main elements allows you to get new properties, which leads to a change in the algorithm of the device.

The proposed device can be used to control the lighting of landing platforms of electric trains. Energy saving is achieved by the fact that the lighting is switched on only for the time the electric train is near the landing platform. Electric train driver approaching a stopping platform

transmits a signal to turn on the device using a radio station mounted on the locomotive. Lighting turns on for a period of not more than 10 minutes, which is quite enough for passengers to board and disembark. Since a small number of trains run at night (from 11 p.m. to 5 a.m.), the overhead of electricity is sharply reduced.

Applicant: Chief engineer of the Kuibyshev railway, V.P. Mohonko

Claims (1)

A radio control device for lighting landing platforms, comprising a demodulator, a bandpass filter, a rectifier, a direct current amplifier, an integrator, and a threshold element, characterized in that it additionally includes: a logical element I, the first input of which is connected to the output of the threshold element; a photo relay whose output is connected to the second input of the AND gate; an asynchronous RS-trigger whose input S is connected to the output of the AND gate; a generator whose input is connected to the output of an asynchronous RS-trigger; a counter whose input is connected to the output of the generator, and the output to the input R of the asynchronous RS-trigger; lighting control relay, the input of which is connected to the output of an asynchronous RS-trigger.