SU1270783A2 - Information reception device - Google Patents

Description

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The invention relates to telemechanics and can be used to transmit and receive information, 1- and in systems with a large number of receivers and transmitters operating in a common communication channel, it is complementary to the auth. St. S- 1 104572.

The purpose of the invention is to extend the functionality of the assembly by introducing a telecontrol function.

The drawing shows the functional diagram of the device.

The device contains a receiver, selector unit 2, selector 3 zero element RSHI 4, blocks 5 and 6 memory triggers 7 and 8s counters 9, 10, II pulses, elements 2 and 13, subtracts element 14, generator 5 pulses, decoder 16, elements AND-NOT 17-22, block 23 actuators of the elements 5 shaper 24 clock pulses, display element 25, AND 26 element, decoder 27, command setting 28, switch 29, unit code shaper 30, shaper 31 of zero code 5 transmitter 32.

The device works as follows. In the initial state, the output signals of the selectors 2 and 3 have the logical zero values and the output from the generator of 24 clock pulses, intended for the form-ic, nor the short pulse duration S has the value of logical units. The transmitted signals (the address and operation code of the local telemechanic station and information from it) are received by receiver i, connected to the Sle connection channel shown, and are fed to the inputs of selectors 2 and 3.

When a code appears in any bit, the unit at the output of the selector 2 acquires the value of a logical unit, while the output of the selector 3 retains the value of the logical zero. When a code appears in some kind of code, the zero is at the output of the selector. 2, a logical zero signal appears, and at the output of the selector 3, the potential of a logical unit. Because. the outputs of both selectors 2 and 3 are connected to the inputs of the element AND, HSG 4, the potentials of a logical unit appear at its output when any elementary parcel containing a code feature enters the device.

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These pulses are fed to the input of the imaging unit 24 clock pulses, which form short pulses of a 5-level level from the incoming pulses. Using again

of the generated pulses, information is re-recorded in the first memory block 5 and randomly advancing the previously recorded information 5 with each shift clock pulse corresponding to a shift of the number recorded in memory block 5 by one bit, the counter 9 is switched when receiving information from the places of the 5 th point of telemechanics, the clocking of trigger B, as well as the installation of counter 10 to the initial, single state.

When power is applied

20, the first delay element 12 is started up and a logic unit level is set at its output, a second delay element 13 is set to its initial state, with the level of a logic unit appearing at its first output and at the second outputs. - the level of logical zero, and in the initial, zero state is set trigger 7, prohibiting

30 thereby the operation of the element, and the elements AND 14s AND-NOT 17-20 and the counter 11. At the output of the element AND NOT 19, the level of the logical unit appears, which goes to the control inputs

35 shaper 30 unit code and shaper 31 zero code, prohibiting

their job on the third trigger input

8 and to the second input of the counter 9, preparing them for operation .. The level of the logical unit from the output of the trigger 8 also goes to the first input of the NAND element. 22, to the second input of which the output of the counter 9 receives a signal with the level of logical zero, which prohibits the operation of the NAND element 22 and sets the output of the last logical unit. The signal from the output of the counter

9 also prohibits the operation of the element .A and 14,

At the output of the element AND-NOT 17, the level of the logical unit is set, which prohibits the operation of the counter 10. Moreover, at both outputs of this counter, the levels of the logical unit are set. Level of logical unit from the first output of the counter

10 arrives at the first input of the decoder 16, allowing the latter to work. The level of the logical unit from the second output, and the counter 10, enters the first input of the AND-NOT element 18, preparing it for operation. At the output of the NE-18 element, the level of the logical unit is set, which is fed to the first input of the second delay element 13, made on the basis of binary counters, prohibiting its operation. At this, the preparation for the first cycle of operation of the device for receiving information is completed. After a predetermined time delay at the output of the first delay element 12, a logic zero level appears, which sets the first trigger 7 to the one state. The level of the logical unit from the output of this trigger goes to the corresponding inputs of the element And 14 and the elements AND-NOT 17-20, allowing them to work. In this case, counter 11 is set to the initial zero state, which corresponds to the address of the first local telemechanic station. The signals from the output of counter 1 are fed to the corresponding inputs of the decoders 16 and 27, as well as to the first information inputs of the switch 29. The signals from the output of the decoder 27 arrive at the inputs of the display element 25, which highlights the conditional number of the local telemechanic polled. At the first output of the decoder 16, a signal appears at a logic zero level, which prohibits the operation of the first delay element 1 and prepares the corresponding cell of the second memory block 6 for recording information from the first local telemechanic station. At the outputs of the AND-HEY elements 18 and 19 pv are the logical zero levels, the first of which allows the second delay element 13 to work, and the second arrives at the third trigger input 8, sets this trigger to its original, single state and disables its operation, and the second input of counter 9, also prohibiting its operation. The level of logical zero from the output of the element AND-NE 19 also enters the control inputs of the worlds 30 and 31, allowing them to work. 834 The device is ready to transmit the address of the local telemechanic station and the command code. The level of the logical unit from the first output of the second delay element 13 arrives at the second input of the And 26 element, thereby resolving the passage of pulses from the generator 15 to the second input of the second delay element 13. The signals from the second outputs of the second delay element 13 are sent to the control inputs of the switch 29, under the action of which the latter begins to connect its output sequentially in time to one of its inputs, having converted the parallel code to the serial one. This code is also sequentially received in time through the drivers 30 and 31 to the inputs of the transmitter 32, and from its output to the communication line. Thus, the transmission code of the address of the local telemechanic center and the command code are transmitted. Simultaneously with the beginning of the transmission of the code and its reception at the local telemechanic station, the transmitted signals are also perceived by the receiver 1 of the device. Through selectors 2 and 3, they are fed to the input of the element OR 4, and from its output - to the input of the shaper 24 clock pulses, which form short pulses of a logical zero from them, which are fed to the second inputs of trigger 8 and counter 9. But, since Both of these elements are in the forbidden state, then the state of their outputs does not change. Consequently, the connection of the outputs of the NAND element 20 and the element 14 is not changed. The recording of the transmitted information in the second memory block 6 is not performed. With the arrival of each clock pulse through the open first AND-HAY element 17 to the first input of the counter 10, it is reset to the initial state. Consequently, the state of the counter a 1 does not change. After the time during which the code of the address of the local telemechanics center and the command is transmitted, the first output of the second delay element 13 appears at a logic zero level that prohibits the operation of AND 26 and the switch 29 The logical zero level from the first output of the second delay element 13 is fed to the first input of the AND-NOT element

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19 and sets at its output the level of a logical unit that goes to the control inputs of the unit code maker 30 and the unit maker 3 of the zero code 5 prohibiting their operation. The level of the logical unit from the output element AND-NOT 19 also enters the third input of the trigger 8,. preparing it for operation, and to the second input of the counter 9, setting it to the initial, zero state and allowing counting the clock pulses arriving at the first input of this counter from the output of the driver 24 clock pulses when receiving information from the local telemechanics center.

After the end of the transfer of the address of the local telemechanics center and the crew, the device INPUT-OUTPUT terminal begins to receive information from the interrogated local point

If there is at least one unit in the code received from the local telemechanic station, which signals, for example, that the monitored parameter is out of acceptable limits, the potential at the output of the selector 2 units becomes the logical unit and arrives at the first input of the AND-NE 21 element. output level is set to a logical zero, which is fed to the first input of the trigger 8. With the arrival of the clock pulse to the second input of the trigger 8, its state changes, i.e. at the output, a logic zero level appears, which arrives at the second input of the AND-HE element 21 and prohibits its operation.

In the absence of a unit of potential at the output of the selector 2, the unit of its state does not change, i.e. remains at the logical zero level. Therefore, the initial, single state of trigger 8 also does not change.

; When the counter reaches 9, the level of a logical unit appears at its output, which goes to the second input of the NANDEM element 22 and to the first input of the AND 14 element, allowing the operation of these elements. At the same time, at the output of the element AND 14 pa is the level of the logical unit, which is fed to the input of the recording resolution of the second memory block 6 and allows the passage of information

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this block is from the outputs of the first memory block 5 and the output of the NAND element 20 into the memory cell that is open with a logic zero level from the output

5 decoder 16.

Moreover, if the initial, single state of the trigger 8 does not change; which corresponds to the absence of units in the received code, the logical zero level is set at the output of the IS-NOT element 22. This level arrives at the first input of the element AND-NOT 20 and sets the level of the logical unit at its output.

5 If the initial, single state of the trigger 8 changes, i.e. at its output appears the logical zero level 5, which corresponds to the presence of at least one unit in the addendum code, then at the output of the element

AND-NO 22 maintains the level of a logical unit, and at the output of the element IS-NOT 20, a level of logical zero. So in the first case in

the corresponding cell of the memory block 6 records the level of the logical unit, which corresponds to the state of the monitored parameter within the specified limits, and in the second

In the case of the same cell, a level of logical zero is recorded, which corresponds to the output of the monitored parameter from the specified limits. Preparation of the device for the next work cycle occurs as follows.

Upon completion of the transmission of information from the first (or previous) local telemechanics point in the communication channel

(not shown in Fig. 1) there is a dead time pause, so there are no signals at the output of receiver 1. Consequently, the output of the selectors 2 and 3 and the element OR 4 is preserved.

the level of logical zero, and at the output of the generator 24 clock pulses - the level of logical units. As a result, the logical element

Claims (1)

zero, which sets the counter 10 to its original, single state and enables its operation. When the counter 10 sets a predetermined delay time equal to the time required to prepare the transmitter of the central telemechanic center to transmit the address of the next order of the local telemechanical center address and command, a logical zero level is set at the first output, which prohibits the operation of the counter 1I and the decoder 16 In this case, in the case of receiving information in the previous subcycle, the level of the logical unit is again set at the first output of the telemechanics at the first output of the decoder 16, and goes start the first element 12 of the delay. The information is recorded in the second memory block 6, received from the local telemechanic station, upon the return of the corresponding output of the decoder 16 to the unit state. The pulse from the output of the generator 15 pulses next to that which sets the logical zero level on the first output of the counter 10, sets the logical zero level and on the second output of this counter. The logical zero level from the second output of the counter 10 sets the element AND-NOT I8 to one state. The level of the logical unit from the output of the element AND NOT 18 prohibits the operation of the element 13 delay. With the arrival of the following pulses from the pulse generator 15 to the counting input of the counter 10, the latter changes the state of its outputs to a single level. The logical unit from the first output of the counter 10 goes to the counting input of the pulse counter 11, changing its state by one, which corresponds to the number of the next local telemechanics, and prohibit the entrance of the decyfrater 16, allowing its operation. The level of the logical unit from the second output of the counter 10 arrives at the first input of the NAND element 18. At its output a logical zero level appears, which arrives at the first input of the second delay element 13, setting this element to its initial state and allowing it to work . At this, the preparation of a device for a new sub-cycle of work ends in a new sub-cycle of transmission and reception of information the device works in the same way as described above. After receiving and recording information from the last local telemechanic station, the signal from the last output of the decoder 16, the trigger 7, has been set, and the 3S blows to its original, zero state. The operation of the device for receiving information in this cycle is terminated. After the time required to prepare the first local telemechanic station for a new information transfer cycle, the output of the first delay element 12 is at a logic zero level, which sets trigger 7 to one state. And the operation of the device for receiving information in the new cycle is repeated. The block of actuators 23 is designed to process information recorded in memory block 6. By means of an actuator unit 23, for example, the state of the monitored parameter is indicated for each local telemechanic station. Thus, in the proposed device, by introducing new elements and establishing new connections, not only the reception of information at the central point from local telemechanics points, but also the transmission of messages to the latter, which significantly expands the functionality of the device. The invention The device for receiving information on the author. St. No. 1104572, characterized in that, in order to expand its functionality by introducing a telecontrol function, a transmitter, unit code and zero code generators, a switch, a second AND element, a command setter, a second decoder and an display element, the pulse generator output are connected to it clock inputs of the drivers of the unit code and the zero code and with the first input of the second element And, the output of which is connected to the second input of the second delay element, the first output of which is connected to the second input of the second element And and prohibiting inputs of the switch, to the control inputs of which the second outputs of the second delay element are connected, the outputs of the third counter are connected to the first information inputs of the switch and to the inputs of the second decoder, the outputs of which are connected to 9 . 127078310 to the inputs of the display element, which are connected to the command interceptor, respectively, are connected to the seam and the second inputs of the transmitter, information inputs of the switch, the output of which is connected to the input the output of which is connected to the information receiver, the output of the third AND-NOT element The co-s drivers are connected to the control inputs of the unit and the zero code, the output I of the unit code and the zero code coders.