SU1160575A1 - Device for transmission of telecontrol commands - Google Patents

Description

The invention relates to the field of telecommunications and can be used in systems for the transmission of remote control commands from the head locomotive to an additional one while driving connected trains.

A device for transmitting remote control commands is known, comprising an encoder, a pulse distributor, a multivibrator, a trigger and a delay element [1].

The closest technical solution to this invention is a device for transmitting commands of telecontrol, containing an encoder, serially connected clock generator, the first element I, a frequency divider and an address generator, the outputs of which are connected to the first inputs of the second, third and fourth elements And whose outputs through the first the OR element is connected to the information input of the transmitter, as well as the second OR element sequentially connected, the driver and the first trigger, the inverse of which connected to a second input of the first AND gate, and the second output of the frequency divider is connected to the input "reset" of the first flip-flop [2].

However, the known devices for transmitting commands of telecontrol have a low noise immunity due to

ability to overlay commands in time.

The aim of the invention is to improve the noise immunity by eliminating the imposition of commands during transmission.

This goal is achieved by the fact that in the transmission device commands remote control, containing the encoder, serially connected clock generator, the first element And the frequency divider and the address generator, the outputs of which are connected with the first inputs of the second, third and fourth elements And whose inputs through the first element OR connected to the information input of the transmitter, as well as serially connected second element OR, driver and the first trigger, the inverse output of which is connected to the second input of the first The second element AND, and the second output of the frequency divider is connected to the “Reset” input of the first trigger, the fifth, sixth and seventh elements AND and the third element OR, the second trigger, the delay element, the multivibrator and the pulse distributor, the first, second and third the outputs of which are connected to the first inputs of the fifth, sixth and seventh And elements, respectively, the outputs of which are connected to the second inputs of the second, third and fourth And elements, respectively, and to the inputs of the second OR element, the first second and third the encoder's outputs are connected to the second inputs of the fifth, sixth and seventh AND elements, respectively, and the third OR inputs, the fourth output of the pulse distributor is connected to the Reset input of the second trigger, the inverse output of which is connected to the control input of the transmitter, the first output of the first trigger is connected to the blocking multi-vibrator input.

The drawing shows a structural electrical circuit device for the transmission of commands remote control.

The telecontrol command transmission device contains an encoder 1, a generator of 2 clock pulses, the first element AND 3, a divider 4 frequencies, a driver 5 addresses, the second, third and fourth elements AND 6-8, the first element OR 9, the transmitter 10, the second element OR 11, shaper 12, first trigger 13, fifth, sixth and seventh elements AND 14-16, third element OR 17, second, trigger 18, delay element 19, multivibrator 20 and pulse distributor 21.

The device control commands telecontrol works as follows.

Depending on the type of command given from the encoder 1, it goes to the second input of the fifth, sixth or seventh element 14-14, for example, the input of the fifth element 14 and through the third element OR 17 triggers the trigger 18. The resolutive signal from the inverse the output of the second trigger 18 includes a transmitter 10.

The signal from the direct output of the second trigger 18 through the element 19, the time delay of which is determined by the switching on time of the transmitter 10, triggers the multivibrator 20, to the output of which the distributor 21 is connected. At the first output of the distributor 21 a signal appears that opens the fifth element I 14, since the second its input has an enabling signal from the output of the encoder 1. The signal from the output of the fifth element And 14 is fed to the second input of the second element And 6 and through the second element OR 11 and the driver 12 triggers the first trigger 13. C the signal from the direct output of the first trigger 13 blocks the multivibrator 20 at the time of the command transmission, and the enabling signal from the inverse output of the first trigger 13 arrives at the first input of the first element And 3, which opens. The pulses from the generator 2 begin to arrive at the input of the divider 4, and from its output the pulses arrive at the shaper 5. The second element And 6 opens, since at the second output there is an enabling signal from the output of the fifth element And 14, and the first is a series of pulses with driver 5. Rectangular signals corresponding to a given command,

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arrive through the first element OR 9 and the transmitter 10 in the communication line. After the end of the command series, the last pulse from the output of divider 4 returns the first trigger 13 to the initial state. The signal from its inverse output blocks the first element And 3, and, the signal from the direct output of the first trigger 13 allows the multivibrator 20 to work. If there are no other commands at the output of the encoder 1, then the distributor 21 passes the second and third positions. Otherwise, the command series corresponding to the specified command is transmitted as described above.

When the valve 21 arrives at the last position, the second trigger 18 returns to the initial state. As a result, the transmitter 10 is turned off and the multivibrator 20 is blocked until the next command is given.

⁵ The use of this invention allows to extend the functionality of a known device, which consists in the organization of the sequential transmission of commands with their simultaneous appearance

10 at the output of the encoder, automatic retransmission of the command in the event of a failure or loss of the communication channel, turning on the transmitter only for the duration of the transmission of the next command and improve noise immunity.

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Claims (2)

A CONTROL COMMUNICATION TRANSMITTER DEVICE, containing an encoder, a serially connected clock, the first AND element, a frequency divider and an address generator, the outputs of which are connected to the first inputs of the second, third and fourth elements AND, whose outputs through the first element OR are connected to the information input of the transmitter, as well as serially connected second element OR, driver and first trigger, the inverse output of which is connected to the second input of the first element AND, and the second output of the divider frequency is connected to the input "Reset" of the first trigger, characterized in that, in order to increase the noise immunity by eliminating the imposition of commands during transmission, the fifth, sixth and seventh elements AND and the third element OR, second trigger, delay element, multivibrator are entered in it and a pulse distributor, the first, second and third outputs of which are connected to the primary inputs of the fifth, sixth and seventh elements And, respectively, the outputs of which are connected to the second inputs of the second, third and The fourth And elements and the inputs of the first OR element, the first, second and third outputs of the encoder are connected to the second inputs of the fifth, sixth and seventh And elements, respectively, and the inputs of the third OR element, the fourth output of the pulse distributor is connected to the “Reset” input of the second trigger, the inverse output of which is connected to the control input of the peredachik, the direct output of the first trigger is connected to the blocking input of the multivibrator. but 1160575 I > 1160575 one 2