SU1513497A1 - Device for receiving remote control commands - Google Patents

Abstract

The invention relates to tele-mechanics devices with time-division of signals, ensuring the receipt of commands for telecontrol by two-position objects. The purpose of the invention is to expand the functionality by providing a control mode, the introduction, in addition to remote, local control and local display of received commands. The goal is achieved by the fact that the device for receiving remote control commands contains a command receiving block 2, a communication line 1, an information control block 4, a memory block 3, blocks 5, 6 of amplifiers, blocks 10, 11 of actuating elements containing two-winding relays 12 , 13, blocks of 8.9 separating elements, block of 7 keys and elements of each actuator elements are entered And 18-20, inverter 24, delay element 25, switches 14,15, restrictive elements 21,22, group 16 of separating elements, block 17 mappings, the element OR 23, which provides algorithmic and constructive alignment between automatic and manual feed commands. 1 il.

Description

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display received commands. P.el is achieved by the fact that in a device for receiving telecontrol commands, comprising a command receiving unit 2, a communication line 1, a unit; 4 control information, block 3 of memory, blocks 5, 6 of amplifiers, blocks 10 and 11 of executive elements, containing two winding relays 12, 13, blocks 8.9 of separating elements, block

7 keys and in each block of executive elements elements 18-20, inverter 24, delay element 25, switches 14, 15, restriction elements 21, 22, group 16 of separation elements, display block 17, element OR 23, which provides algorithmic and constructive Combination of the modes of automatic and manual giving of commands. 1 il.

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The invention relates to tele-mechanics devices with time-division of signals, ensuring the receipt of commands for telecontrol by two-position objects.

The purpose of the invention is to expand the functionality by providing a control mode, the introduction, in addition to the remote local control and the local display of the received commands.

The drawing shows the block diagram of the device.

The device for receiving telecontrol commands contains a communication line 1, a command receiving unit 2, a memory block 3 0, an information control block 4, blocks 5 and 6 of amplifiers, a key block 7, blocks 8 and 9 of separating elements, blocks 10 and 11 executive elements, each of which consists of 35 two-winding relays 12 and 13, with windings 12-1, 12-2, 13-1, 13-2 and pins 12-3 and 13-3, damper 14 and 15, partitions elements 16, display unit 17, elements 40 tov H 18-20, restrictive elements 21 and 22, element OR 23, inverter 24 n delay element 25.

In the example of the device shown for example, the number of groups of objects is equal to n, and the number of telecontrol objects in the group is m. These numbers can be specified arbitrarily, in the actually executed version of the device, .JQ To simplify the drawing, two are shown. units of actuators (10 and 11), in each of them there are only two output relays 12 and 13. It is obvious that the number of BT 10 and 11 can be equal to n, and the number of relays 12 and 13 to t.

Relay contacts 12 and 13 used for switching actuators are not shown.

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Ustorgstvo works as follows.

The serial code of the command, the synchronization and protection bits come from the communication line to block 2, which separates the information part of the code from the sync, provides for the suppression of relatively weak interference and generates signals to blocks 3 and 4. In accordance with By the view of the noise protection code, block 4 checks the absence of distortions and permits the transfer of the code converted into parallel form and stored by block 3 to the output, i.e. into blocks 5 and 6. For example, if a cyclic code is used to protect information from interferences in a communication line, block 4 is a cyclic code decoder that determines the remainder of dividing the received code sequence into a polynomial. If the remainder is zero, block 4 retransmits signals from block 3 to blocks 5 and-6 and, if necessary, generates a signal-receipt for transmission through block 2 to the communication line, confirming the receipt of commands

Block 3, besides converting the serial code to. parallel, it divides the received command code into two components - the signals of the address 1 ".. n group of objects and the address 1. ,. objects telezvie boards in the group. The division of teams according to group affiliation allows the device to be built according to a modular principle, increasing the volume and equipment as the number of teams increases.

Consider first the mode of receiving commands only from the communication line. The enable signal of the group number from block 5 through one of the diodes of group 8 pos5 15

stubs to the input element And 20 of the corresponding block 10 and 11. At the second input of the element And 20, the enabling signal (zero level) comes from the element 21 connected to the combined middle terminals of the switching contacts 12-3, 13-3 relays 12 and 13. This output must be connected to the common bus of the external remote control unit of the received command (i.e., relay states 12 and 13). If the connection of the middle pins of contacts 12-3 and 13-3 with the control unit is missing, the control of relays 12 and 13 should be prohibited, since their state is not monitored automatically. In this case, a resilient signal is applied from the resistor 21 to the input of the AND element 20 (a logic level 1). Thus, the element And 20 forms the output signal 1, if a control signal from block 5 is supplied to it and the remote control block of the received commands is connected. The output signal 1 from the output And 20 is fed to the inputs of the elements And 18 and 19. The second input of the element And 18 is given a signal from the element 22 connected to the anode-combined diodes of group 16. The logical level of the signal at the second input of the element And 19 is determined by the position of the contacts 12 -3 and 13-3 relays 12 and 13. If at least one of the relays is in the on state, the corresponding contact 12-3 and 13-3 is moved to the position opposite to that shown on the h-drawing. The level of the logical signal is O, and the element And 18 is released. As a result, at the output of the element 18, a signal 1 is formed, bringing the switch 14 to a working state. The switch thus provides transmission to the output voltage () The switch can be made on an electromagnetic relay or on a contactless key. The signal from the switch 14 is fed through the inverter 24 and the element OR 23 to AND 19, blocking its operation. At the same time, the supply voltage is supplied from the switch 14 to the first windings 12-1 and 13-1 of relay 12 and 13. Signals in the windings 12-1 and 13-1 of the relay are switched off.

When all relays turn off, they will simultaneously switch to the position shown in the drawing, the contacts

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12-3 and 13-3. As a result, from element 22, input 1 (inverting) element 18 is supplied with signal 1, which blocks the output of signal 1 by it, and windings 12-1 and 13-1 are de-energized. At the same time, a signal 1 is formed at the output of the inverter 24 and an element OR 23, whereby a signal 1 is formed at the output

0 element And 19 (signal 1 to the input of element And 19 is also supplied from element And 20). The switch 15 is put into a working state, transferring the output voltage from the power source to the output.

5 (and pit). This signal (until the control signal is removed from block 5), which enters the input of the element OR 23 through the delay element 25, maintains the operating state of the switch

0 15. The signal from the switch 15 is applied to the windings 12-2 and 13-2 of the relay 12 and 13. The relay is switched to the on state by signals in these windings in accordance with the signals from block 6

5 amplifiers, i.e. depending on the received signals, the addresses of the telecontrol objects in the group (signals from block 6 to the relay are fed through diodes of group 9). Relay ON

0 12 and 13 are also held after removing control signals from windings 12-2 and 13-2.

In order to exclude the re-transmission of signals to the windings 12-1 and 13-1 (when a relay is set to the on state), the third (inverting) input of the And 18 element is given a signal from the OR 23 element. At the beginning of the relay control process (

Q stage of preliminary disconnection of all relays by a signal from switch 14) the signal for blocking element 18 from element OR 23 is absent - as a result, first (if at least one relay is in the on state) switch 14 is in the operating state, then switch 15, whereupon the repeated operation of the switch 14 is prohibited and the relays are held in accordance with the received command. The delay element 25 prevents the switch 15 from snapping into working condition when, at the beginning of the control cycle, due to delays in the operation of the logic elements of the circuit, the signal at the output of the switch 14 is zero for a short time.

In order to prevent circuit failures in transient conditions, the magnitude

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the delay introduced by element 25 must be greater than the time required for establishing the operating level of the signal at the output of switch 14, but less than the time required for setting a new relay state. Due to the fact that the indicated times differ by several orders of magnitude (μs and ms). The marked condition of normal operation is easily fulfilled. It is important to emphasize that the shown contacts 12-3 and 13-3 of relay 12 and 13 are used to monitor the operation of the relay, as well as for the purpose of issuing signals for an external (not shown) remote control unit.

Information signals to the external remote control unit are supplied from the combined middle output and from the individual make contacts 12-3 and 13-3 of all relays.

Using the elements 16, the information signals from the circuit 1 1, their contacts 12-3 and 13-3, all of the relays are separated and used to control the operation of the switch 14 and as input to the display unit 17. In it, for example, individual LED indicators can be used for the relay, connected via limiting resistors. to the power supply bus (the dictors provide the possibility of local visual monitoring of the installed state of the relay, i.e. received commands.

In addition to the contacts 12-3 and 13-3 shown in the drawing, other (not shown) contacts of these pexie are used for direct switching of actuators (starters, switches of communication channels, information boards, sensors of measured parameters, etc.).

An important characteristic of the proposed ycTpofi: cTBa is the ability to manually podcast commands from a local sensor using control methods and equipment involved in the above mode of automatic reception and processing of commands from the communication line.

Consider the operation of the device in the mode of the command feed.

For manual submission purposes, a block of 7 keys is used, containing, for example, iri arresting buttons according to the number of signals of the address of control objects in a group and from 1 to n non-arresting buttons to set short-term address signals of groups of objects, and the address signals of control objects in the group are generated Only when you press any non-emergency button to set a group of objects. The time for issuing signals for manual command is limited

below the time of the relay pre-blocking of blocks 10 and 11 and the subsequent switching on of the relay in accordance with the newly set command, i.e. is a few killiseconds .. In

Due to the fact that the time for signaling from above is not limited, special measures for shaping the time parameters of the signals of block 7 may not be taken, which makes it possible to simplify block 7 as much as possible by limiting the installation of the specified -A set of non-arresting buttons. Focusing on the relay state indicated by the block 17, the operator sets

using the arresting buttons of block 7, the required new state of all the relays of one of blocks 10 and 11, and then briefly presses the arresting button of block 7, corresponding to

selected group of objects, i.e. one of blocks 10 and 11.

Through blocks 8 and 9, the signals generated by block 7 are directed to the same. the circuit as the signals from the blocks

4, 2 and 3, therefore, the further operation of the device is similar to that discussed above for the automatic command reception mode. According to the newly established state of the indicators of the unit 17, the operator can control the execution of the commands issued; remote control of the received commands, as in the automatic reception mode, is carried out by an external unit according to the information

Signals from smd auschi: from contacts of the relay.

Thus, due to the considered construction of the device, the modes of automatic and manual feed

Mandas are combined both algorithmically and constructively, and in both modes, while preserving, controlling the absence of distortions of the received command by interferences in the communication line and due to equipment malfunction, local (visual) and remote (automatic) control of the received commands is also carried out. This-dos915

The advantages of the proposed device are comparable with the known ones.

Claims (1)

Apparatus for receiving remote control commands, comprising a command receiving unit, the input of which is connected to the output of the communication line, the output to the inputs of the information control unit and the memory unit, the outputs of the first and second groups of which are connected to the same inputs of the first and second groups of the monitoring unit information, the outputs of the first and second groups of which are connected respectively to the inputs of the first and second blocks of amplifiers, according to the number of control objects, the blocks of actuators, consisting of a two-winding relay, differing In order to extend the functionality by providing a control mode, it contains blocks of separating elements, a block of keys, and in each block of actuating elements — And elements, an inverter, a delay element, switches, restricting elements, a display unit, and a group of separating elements , the outputs of the first and second groups of the key block are connected to the same inputs of the first group, respectively, of the first and second blocks of separation elements, the inputs of the second group of which are connected to the outputs of the co respectively to first and second amplifiers .rogo blocks, outputs the first block dividing elements are respectively connected to the first inputs of the first elements of like blocks and the actuators, the outputs of the second block dividing elements are connected to first terminals of the first windings of the first and second double-wound relay homonymous Bloch 0 3 0 349710 for each executive element, the output of the first element I in each block of the executive elements is connected to the first inputs of the second and third elements I, the outputs of which are connected to the first inputs of the first and second switches, respectively, the first OUTPUTS of the second windings of the first and second two-winding relays, the output of the first switch is connected to the combined second outputs of the second windings of the first and second double-winding relays and through an inverter with the first input of the RSHI element, the output of the second comm The sensor is connected to the combined second terminals of the first windings of the first and second double-winding relays and, through a delay element, to the second input of the OR element, whose output is connected to the second inputs of the second and third elements, the second inputs of the first and second switches are connected to the input of the display unit and connected to the terminal power supply, the outputs of the display unit are connected to the corresponding first inputs of the separation elements of the group, the outputs of which are the first fixed outputs of the first and second contacts The two-winding relays, the second fixed contact pins and the combined moving pins of which are output, device moves, the power supply terminal is connected through the first limiting element to the third input of the second Nick element, the combined second inputs of the separation elements of the group and through the second restrictive element - to the second input of the first element And and to the combined moving pins of the first and with the second double-winding relay. five 0 five 0