SU1644198A1 - Remote control device - Google Patents

Description

one

(21) 4479478/24

(22) 07/11/88

(46) 04.23.91. Bul, № 15

(71) All-Union Scientific Research and Design Coal Institute KNIUI

(72) V.A. Ivanov and I.N. Fedorashko (53) 621.398 (088.8)

(56) USSR Author's Certificate No. 102307, cl. G 08 C 19/16, 1983.

USSR Author's Certificate No. 1460733, cl. G 08 C 19/16, 1987. (54) DEVICE FOR REMOTE CONTROL

(57) The invention relates to the field of telemechanics and can be used for

control of moving objects in an explosive environment. The purpose of the invention is to increase the reliability of information transfer. The device contains generators 1 and 2, dividers 3 and 4 frequencies, shapers 5 and 6 clock pulses, distributors 7 and 8 pulses, elements OR 9, 10 and 11, keys 12 and 13, current limiting resistor 14, pulse width selector 15, AND elements 16, 17, 18, 19, actuators 20 and 21, signal switches 22 and 23, wire of communication line 24, synchropause selector 25, high-pass filter 26, detector 27, control keys 28 and 29, command pulse driver 30, indicators 31 and 32 2 sludge

1

The invention relates to the field of telemechanics and can be used to control moving objects in an explosive atmosphere.

The purpose of the invention is to increase the reliability of information transfer.

Figure 1 shows the functional diagram of the device; 2, time diagrams of his work for the cases with five control commands.

The device contains 1 and 2 generators. Dividers of 3 and 4 frequencies, shapers of 5 and B clock pulses, distributors of 7 and 8 pulses, elements OR 9-11, keys 12 and 13, current limiting resistor 14, selector 15 of pulse duration, elements AND 16-19, actuators 20 and 21, signal switches 22 and 23, communication line wire 24, sync pause selector 25, high pass filter 26, detector 27, control keys 28 and 29, command pulse shaper 30, indicators 31 and 32.

The device works as follows

In the absence of control commands, the keys 28 and 29 are open, the actuators 20 m 21 are turned off, the signal keys 22 and 23 are open.

In the shaper of the 5 clock pulses from the pulses of the generator 1 (fig. 2a), the clock pulses are formed with the help of the divider 3 frequency (fig.2b). These pulses arrive at the clock input of the distributor 7 pulses, in which the sync pause is formed (fig, 2c) Gating pulses of commands (FIG. 2d) and gating pulses of receipts (FIG. 2d), shown for the temporary position corresponding to the first command. The signal from the third (synchronizing) output of the distributor 7 enters the input of the element OR 10. The signal from the output of the latter controls the key 13, as a result of which the wire 24 of the communication line through the current limiting resistor 14 receives positive rectangular pulses with a relatively low frequency (Fig.2B), which are fed to the inputs of the selector 25 sync and high pass filter 26. These pulses do not pass through the filter 26, as a result of which the indicators 31 and 32 do not emit.

In the sync pause selector 25, a sync pulse (FIG. 2e) is generated from the signal coming from the wire 24 of the communication line. It is fed to the reset inputs of the frequency divider 4 and the pulse distributor 8, thereby synchronizing the two distributors 7 and 8 pulses. In the distributor 8 pulses with the help of the generator 2, the divider 4 frequencies, the driver 6

strobe signals of control commands and receipts are formed, similar to the corresponding signals generated in the distributor 7 pulses.

When one of the control keys, for example, key 28, is closed, the gating pulse of the command from the output of the distributor 8 pulses through the OR element 11 enters the input of the driver 30, where a command is formed that represents a pause in the signal in the wire 24 of the communication line.

In the pulse width selector 15, a signal is formed (FIG. 2z), which arrives at the first inputs of the elements 16 and 17, the second inputs of which receive strobe signals to the output command of the pulse distributor 7. When the command pulse coincides with the corresponding gate, the signal from the output of the element 16 switches on the actuating element 20, the signal key 22 of which connects the strobe signal of the receipt from the output of the distributor 7 to the input of the element OR 9 whose output controls the key 12, resulting in relatively high-frequency generator pulses 1 through the key 12, the element OR 10, the key 13 enters the wire 24 of the communication line in the form of a high-frequency burst of pulses, which occupies a temporary position corresponding to the command given. Fig. 2g shows the signal in the wire 24 of the communication line in the case of transmission of the first and fourth control commands and the first receipt. High-frequency receipt signals pass through a high-pass filter 26 to the input of the detector 27, separating their envelope (Fig. 2i). The signal from the detector output goes to the first inputs of the And 18 and 19 elements. When these pulses coincide with the corresponding gate of the receipts that come to the second inputs of the And 18 and 19 elements from the distributor 8 pulse output, the signal from the output of the And 18 element goes to the indicator 32, signaling about the execution of the transferred command.

When any other control key is closed, the device operates in the same way. The device is protected against short circuits and breaks in the communication line. The intrinsic safety of the device is provided by a current-limiting resistor 14.

Claims (1)

Invention Formula A remote control device containing a high-pass filter at the control point, the output of which through the detector is connected to the first inputs of elements I, the outputs of which through a corresponding indicator are connected to the first wire of the communication line, the spool distributor, the first outputs of which through control keys are connected to the input of the OR1 element at the control object — a generator whose output is connected through a serially connected frequency divider and a clock pulse generator to a pulse input of a pulse distributor, the first outputs of which are connected to the first inputs of elements And, the outputs of which are connected to the inputs of the corresponding final elements , the second outputs of the pulse distributor are connected via a corresponding signal key to the inputs of the first OR element, the output of which is connected to the control The first input of the key, the output of which is connected to the first input of the second OR element, the output of which is connected to the control input of the second key, whose signal input is connected to the positive terminal of the power supply, the output of the second key is connected to the second wire of the line connection, the third output of the pulse distributor is connected to the second input of the second OR element, which is aimed at increasing the reliability of information transfer; a synchropause selector, generator, frequency divider, clock driver and command pulse generator, the output of the third element OR are connected to the second wire of the communication line, high-pass filter input and the first input of the selector at the control point. sync pause, the output of which is connected to the reset inputs of the pulse distributor and frequency divider, the output of the latter of which is connected to the clock through the driver of clock pulses the pulse distributor's input, the generator output is connected to the clock input of the frequency divider, the first wire of the communication line is connected to the second input of the sync pause selector, the pulse width selector is entered at the control object, the first and second wires of the communication line are connected to the inputs, the output of the pulse duration selector connected to the second inputs of 1/1 elements, the generator output is connected to the signal input of the first key