SU1107303A1 - Device for transmitting control instructions - Google Patents

Abstract

CONTROL COMMUNICATION TRANSMISSION DEVICE, containing in the transmitting part a command signal generation unit, an OR element, whose input is connected to the output of the confirmation signal generator, and on the receiving side, an input confirmation signal unit and a command receiving and decoding unit, whose output is connected to the driver input Confirmation signal, characterized in that, in order to improve the accuracy of the transmission of control commands while reducing the time of command exchange, Each command to block the start of any of the remaining commands, ensure that when the command is transmitted, call the automatic repeat mode, ensure the priority of the transmission of the command acknowledgment signal, enter the control unit and the inhibit element on the transmitting side, with the start output of the control unit through the serially connected command signal generation unit and the prohibition element is connected to another input of the OR element, while the other output of the signal conditioner is confirmed to be connected to the second input of the element The control output of the command signal generation unit is with the corresponding input of the control unit, the code of which is connected to the remote input of the command signaling unit, and the trigger side and the differentiating circuit, the output of which is connected to the Start input of the control unit, are inserted at the receiving side, the first output of the confirmation signal receiving unit is connected to the installation input of the command signal generating unit i and the trigger input, the inverse input of which is connected to the second output Odom block reception acknowledgment signal, and the second Viot; od unit receiving and decoding command - to the input of a remote control of the control unit. 2. The device according to claim 1, characterized in that the control unit comprises the first element AND, the first trigger, the second element AND, the OR element, the second trigger, and the first input of the first element AND and the second input of the OR element are connected and connected with the first contact of the command start button, the second input of the first element AND is the control input of the control unit, the second input of the first trigger is connected to the output of the second element AND, the second inputs of the second element AND and the second trigger are combined and are input a control unit, an output of the second flip-flop is connected to the second contact start button, which is included in parallel

Description

a remote control unit whose input and output are respectively the input and output of the remote control of the control unit, and the output of the OR element is the Start output of the control unit.

3. The device according to claim 1, 1 and 2, is that the command signal generation unit is made in the form of a unit generator connected in series, the first element AND, a pulse divider with the division factor N, the second element AND, as well as the first trigger, the output of which connected to the second input of the first element AND, the second trigger, a delay line with N taps, each of which is connected through a corresponding AND element and an OR element to the first input of the first trigger, N memory elements and N control buttons, one contact each The button is connected to the point of zero potential, and the other contact of each of these buttons is connected via the remote control input of the command signal generation unit with the contact of the corresponding button of the control unit and connected to the recording input of the corresponding memory element, the installation inputs of the initial state of the memory elements and the second the trigger is combined and connected to the input of the installation of the signal generation unit of the command, the output of each of the memory elements is connected to the second input of the corresponding element AND in the output circuit Delay, the second inputs of the first and second triggers are combined with the input of the delay line and connected to the start input of the command signal generation unit, the output of the second trigger is connected to the second input of the second element AND whose output is connected to the first output of the command signal generation unit, the output of one of the elements the memory is connected to the second output of the command signal generation unit.

one

The invention relates to radio engineering and can be used in communication systems for interference-free transmission of control commands over low quality radio channels.

The closest in technical essence to the present invention is a device for the noise-resistant transmission of control commands for synchronous radio communication systems, comprising in the transmitting part a command signal generating unit, an OR element, whose input is connected to the output of a confirmation signal conditioner, and on the receiving side a signal receiving unit confirmation and a unit for receiving and decoding a command, the output of which is connected to the input of the confirmation signal generator. A command signal in the device is transmitted by a phase difference between the marker corresponding to the transmitted command and the marker of the previous command. At the reception, the command signal is decoded by measuring the difference between the phases

selected when receiving a transmitted command, a marker and a marker allocated when receiving a previous command, the phase of which is stored in the memory. On the reverse channel, a command acknowledgment signal is transmitted 111

However, this device does not automatically block the start of a command during its transmission. This leads to the fact that during a premature (random) start of the command, when the transmission of the previous command has not yet been completed, the phase of the markers of the memory nodes in the transmission and reception phase is out of sync. When the relative method of command transmission used in the device, in this case one false command is transmitted. The absence of this blocking also excludes the possibility of remote control of the device from several workplaces during their simultaneous operation. Since the transfer of commands in the device is carried out by the relative method, at the beginning of the session of command exchange, the command Call must be transferred twice. At the first transmission of this command at the reception, any of the commands is randomly (falsely) allocated and the phasing of the memory element of the phase of the token is carried out, and only at its repeated transmission the command is recorded as Calling a correspondent. Thus, at the beginning of a command exchange session in a known device, the transmission of a call command is required twice. The device does not allow for a one-time command transmission. The call automatically phases the command receiver. The algorithm of operation of the known device does not provide for ensuring the priority of signal transmission is confirmed by the reception of the command of the correspondent before the transfer of its own command. As a result, while simultaneously sending teams to both teams, sending correspondent teams did not lead to the termination of the transfer of their team and the transmission of a confirmation signal. At the same time, the correspondent does not know that his team has already been received, and, because of this, does not stop its transmission until the fixed time interval expires. Thus, in the case of the simultaneous transmission of commands, the channel occupancy time significantly exceeds the time required for their reception. The purpose of the invention is to improve the accuracy of the transmission of control commands while reducing the time of command exchange by entering each of the remaining commands when the start blocking command is transmitted, ensuring the automatic repetition of the command when the command is transmitted, ensuring the transmission priority of the command acknowledgment signal. To achieve the goal of a control command transmission device, a command signal generating unit in the transmitting part, an OR element whose input is connected to the output of the confirmation signal generator, and on the receiving side, an input receive signal confirmation block and a command receiving and decoding unit, the output of which is connected to the input of the confirmation signal generator, the control unit and the prohibition element are entered on the transmitting side, the start output of the control unit through the serially connected photo unit The command signal and the prohibition element are connected to another input of the OR element, while the other output of the confirmation signal generator is connected to the second input of the prohibition element, and the output control of the restarting of the command signal generation unit to the corresponding input of the control unit whose output is connected to the remote input the command signal generation unit, and a trigger and a differentiation circuit, the output of which is connected to the Start input of the control unit, are injected at the receiving side; The first output of the confirmation signal receiving unit is connected to the installation input of the command signal generation unit and the trigger input, the inverse input of which is connected to the second output. the confirmation signal receiving unit, and the second output of the command receiving and decoding unit with the remote control input of the control unit. The control unit contains the first element AND, the first trigger, the second element AND, the OR element, the second trigger, the first input of the first element AND and the second input of the OR element are combined and connected to the first contact of the command start button, the second input of the first AND element the control input of the control unit, the second input of the first trigger is connected to the output of the second element And, the second inputs of the second element And the second trigger are combined and are the Start input of the control unit, the output of the second trigger connection It is connected with the second contact of the start button, in parallel with which the remote control unit is turned on, the input and output of which are respectively the input and output of the remote control of the control unit, and the output of the OR element is the Start output of the control unit. Moreover, the command signal generation unit is made in the form of a unit generator connected in series, the first element AND, a pulse divider with a division factor N, the second element AND, as well as the first trigger, the output of which is connected to the second input of the first element And, the second trigger, delay line with N branches, each of which is connected through the corresponding AND element and the OR element to the first input of the first trigger, N memory elements and N control buttons, with one contact of each of the buttons connected to the point of zero potential The other contact of each of these buttons is combined via the remote control input of the command signal generating unit with the contact of the corresponding button of the control unit and connected to the recording input of the corresponding memory element, the reset inputs of the memory element and the second trigger are combined and connected to the installation input of the command signal generation unit, the output of each of the memory elements is connected to the second input of the corresponding element And in the retraction circuit of the delay line, the second inputs of the first and second Triggers are combined with the input of the delay line and connected to the start input of the command signal generation unit, the output of the second trigger is connected to the second input of the second element I, the output of which is connected to the first output of the command signal generation unit, the output of one of the memory elements is connected to the second output command signal conditioning unit. FIG. Figure 1 shows the electrical circuit diagram of the control command transmission device; in fig. 2 is a structural electrical circuit for generating a command signal; in fig. 3 - voltage plots The control command transmission unit on the transmitting side comprises a control unit 1, a confirmation signal generator 2, a command signal generation unit 3 prohibition element 4, an OR element 5. On the receiving side, the device contains a command 6 receiving and decoding command, a reception unit 7 confirmation signal, trigger 8, differentiating circuit 9. Control unit 1 comprises an AND 10 element, a trigger 11, an AND element 12, an OR 13 element, a trigger 14, a Start button 15 and a remote control block 16. The remote control unit 16 contains, in addition to the button 17, another N buttons. The command signal generating unit 3 comprises a generator of 18 units, the first element AND 19, the pulse divider 20 with the division factor N, the second element AND 21, the first trigger 22, the second trigger 23, the delay line 24 with N taps, N the elements AND 25, the OR element 26, N memory elements 27 (triggers), N control buttons 28. The confirmation signal receiving unit 7 contains a trigger 29, an AND-NE 30 element, an AND 31 element, an OR 32 element, a 33-unit generator, a pulse divider 34, a reversible counter 35, a second OR element 36. The device operates as follows. In the initial state in the control block 1, the trigger 14 is in the single position. By pressing the button 15 Start command in block 1 or button 17 in block 16 of the remote control by a positive edge of the start pulse passing through the closed contacts of button 15 (or button 17), the element OR 13, the trigger 14 is set to the zero state. After this trigger is set to the zero state, a low potential is applied to the second contact of the button 15. As a result, the buttons 15 and 17 are functionally blocked. The generated start pulse (Fig. 3a) comes from the output of the element OR 13 to the start input of the command signal generating unit 3. From this moment on, the command signal (Fig. 3c), which is a periodically repeated binary sequence consisting of (N-1) ones and one zero, enters the communication channel, where N is the number of transmitted commands. At the opposite end of the communication channel, when a command is received by the command receiving and decoding unit 6 in the shaper 2, a confirmation signal is generated and, through the OR element 5, a command acknowledgment signal, representing a sequence of alternating binary units and zeros, is inserted into the reverse channel. In block 7, the reception of the confirmation signal at the input of the trigger 29 through the element OR 36 receives pulses with a clock frequency from output 7 .1 and generator 33 units. From the outputs of the flip-flop 29, the direct and inverted sequences of pulses go to the inputs of the AND-HE element 30 and the And 31 element, respectively. A received binary signal is fed to the inverting input of the IS-NE element 30 and the second input of the And 31 element. Using the logic elements of the trigger 29, the element AND-NOT 30, the element And 31, the element OR 32, located in block 7, receive the signal on the reverse channel and the confirmation signal is converted into a series of units arriving at the first input of the reversible counter 35, another input of this counter receives a threshold sequence of pulses from the output of divider 34. If the trigger 29 is set incorrectly, the command acknowledgment signal will be converted to a series of zeros. However, the pulse from the output of the reversing counter 35 through the OR element 36 will trigger the phase of the trigger 29. The confirmation signal detects with a reversible counter 35 due to the excess of the frequency of the units in the signal the reversing counter 35 arriving at the first time relative to the threshold value of the frequency of the units in the signal arriving at its second input from the output of the pulse divider 34. a reversing counter 35 an impulse appears (Fig. 3b), which sets trigger 8 to one state, and entering the installation of the command signal generation unit prohibits the transmission command signal. Detection of the absence of a command signal at the opposite end of the communication channel, carried out using block 6, results in the termination of the transmission of the confirmation signal generated by the confirmation signal 2 (Fig. 3g, (e)). At the time of the detection of the absence of an acknowledgment signal the reversible counter 35 in block 7 generates a pulse that sets the trigger 8 to the zero state. At the output of the differentiating circuit 9, a pulse is released (Fig. 3i), which sets the trigger 14 in block 1 to the initial (single) state. E this unlocks the command start buttons 15 and 17 (Fig. 3) and the device returns to its original state. In this case, the transmitted signal marker is stored in the transmitting part (in block 3) and receiving part (in block 6) of the device. The commands operate as follows (Fig. 2). In the initial state in block 3, the output of the pulse divider 20 continuously generates an inverted marker signal in the form of a periodic binary sequence consisting of (N-1) ones and one zero. In this case, the output signal of the trigger 23 closes the AND 21 element, and the signal from the output of the pulse divider 20 does not pass to the first output of block 3. The number of the transmitted command in block 3 of generating the command signal is determined by the delay value of the trigger pulse in the delay line 24 and is set by pressing corresponding button 28 of the control or buttons in the block 16 of the remote control. The control signal of the selected command number is recorded in the corresponding memory element 27. As a result of this setting, the command number opens one of the AND 25 elements in the circuit of the taps of the line 24 delay through the control input. When the Start button 15 is pressed in block 1 or button 17 in remote control block 16, a pulse arrives at the start input of the command signal generating unit 3, which sets the trigger 22 to zero state. At the same time, AND 19 closes for several transmission cycles and the clock pulses from the output of the generator 18 units to the input of the pulse divider 20. The delayed start pulse passes through the corresponding tap of the delay lines 24 and sets the trigger 22 to its initial state. As a result, the element reopens nt And 19 and pulses with a clock frequency begin to arrive at the input of the pulse splitter 20. A skipped series of pulses at the input of pulse divider 20 causes a change in the phase of the marker signal at its output relative to the phase of the marker signal corresponding to the previously transmitted command. The phase difference between the marker corresponding to the given command and the marker of the previous command determines the number of the transmitted command. At the same time, the trigger 23 is set to the single state by the start pulse, and the marker signal from the output of the pulse divider 20 begins to arrive at the control output of the repeated start of block 3 through the opened element 21 of the output signal of the unit 7 3, a command signal is generated, an impulse is received, which sets the trigger 23 and the memory elements 27 into the initial connection. As a result, AND 21 is closed, the transmission of command signals is stopped, and with the help of a pulse divider 20, the phase of the transmitted marker is stored in the memory of block 3. In this state, the device is prepared for the transmission of a subsequent command. It is known that the Call command is used at the beginning of a command exchange session between correspondents. In this case, as a rule, it is necessary to synchronize the memory of the phase of the marker in block 6. Therefore, the Call command is transmitted twice: the first time to synchronize the receiving device, and the second time directly to call a correspondent. This command is restarted automatically. When installed using one of the control buttons 28 and the corresponding memory element 27, a high potential is supplied from the output of this element to the second INPUT of the AND 10 element in the control unit 1. In this case, the start pulse of the Call command passes through the AND 10 element and sets trigger 11 to one state. As a result, after the end of the command transmission, a pulse from the output of the differentiating circuit 9 passes through the element 12 and the element 13 of the RShI and re-launches the transmission of the command Call. At the same time, the falling edge of the pulse from the output of the element 12 And the trigger 11 is set to the initial (zero) state. In the case of simultaneous transmission of commands, the following algorithm of operation of the device is implemented. When receiving the command of the correspondent in the imaging unit 2, a signal is output at its output to the prohibition element 4, as a result of which the transmission of its own command is stopped. And from the other output of the imaging unit 2, the command acknowledgment signal is entered through the OR 5 element into the communication channel. The transmission of this signal stops at the moment block 6 detects the transmission of the command signal from the correspondent. At the same time, in element 4, the prohibition is lifted and the signal transmission of the own command resumes. Thus, the introduction of new elements into the device eliminates false registration of commands during their premature start-up, as well as at the beginning of the exchange of control commands (due to a two-time transmission of the Call command), shortens the channel occupancy time and simultaneously sends commands in both directions. and creates the ability to remotely control the transmission of commands. Improving the accuracy of transmission of control commands while reducing their transmission time significantly improves the technical and operational characteristics of the device and allows it to be used for code-command communication on extremely low quality HF radio channels when cable terminals become inoperable.

Fig.Z

Claims (3)

CONTROL COMMAND DEVICE, comprising in the transmitting part a command signal generating unit, an OR element, the input of which is connected to the output of the acknowledgment signal shaper, and on the receiving side, an acknowledgment signal receiving unit and a command receiving and decoding unit, the output of which is connected to the shaper input confirmation signal, characterized in that, in order to increase the accuracy of transmission of control commands while reducing the time of exchange of commands by introducing each transmission th command to block the start of any of the remaining commands, to ensure that it automatically repeats when the Call command is transmitted, to ensure the priority of transmitting the command acknowledgment signal, the control unit and the inhibit element are entered on the transmitting side, and the control unit's start output is through the command signal generating block connected in series and the prohibition element is connected to another input of the OR element., while the other output of the driver of the confirmation signal is connected to the second input of the prohibition element, and you the control run of the restart of the command signal generating unit - with the corresponding input of the control unit, the output of which is connected to the remote input of the command signal generating unit, and a trigger and a differentiating circuit whose output is connected to the start input of the control unit are introduced in series the output of the confirmation signal receiving unit is connected to the installation input of the command signal generating unit and the trigger input, the inverse <q input of which is connected to the second output of the receiving unit acknowledgment signal and the second output command receiving and decoding unit - to the input of the remote control unit and the control. 2. The device according to claim 1, characterized in that the control unit comprises series-connected the first element AND, the first trigger, the second element AND, the OR element, the second trigger, the first input of the first element AND and the second input of the OR element combined and connected with the first contact of the start button of the command, the second input of the first element And is the control unit control input, the second input of the first trigger is connected to the output of the second element And, the second inputs of the second element And and the second trigger are combined and are the input systematic way, the second latch output is connected to the second contact start button, parallel to which included a remote control unit, input and output of which are respectively inlet and outlet remote control unit, and the output element is the output of OR Start the control unit. 3. The device according to p. ^ Characterized in that the command signal generating unit is made in the form of a unit generator connected in series, a first element And, an impulse divider with a division coefficient N, a second element Y, as well as a first trigger, the output of which is connected to the second input of the first element And, the second trigger, a delay line with N taps, each of which is connected through a corresponding element And and an OR element with the first input of the first trigger, N memory elements and N control buttons, with one contact of each of the buttons with is single with a point of zero potential, and the other contact of each of these buttons is combined through the remote control input of the command signal generating unit with the contact of the corresponding button of the control unit and connected to the recording input of the corresponding memory element, the initial settings of the memory elements and the second trigger are combined and connected to the installation input of the command signal generating unit, the output of each of the memory elements is connected to the second input of the corresponding element And in the delay line tap , the second inputs of the first and second triggers are combined with the input of the delay line and connected to the start input of the command signal generating unit, the output of the second trigger is connected to the second input of the second AND element, the output of which is connected to the first output of the command signal generating unit, the output of one of the memory elements is connected with the second output of the command signal generating unit.