SU1524080A1 - Monitored station of telemetering system - Google Patents

Abstract

The invention relates to time-division telemetry systems in which the interface between the control point and the control points is organized via communication lines of a radial, trunk or chain structure. In particular, the device of the controlled point can exchange information with one or two control points, which allows building hierarchical network complexes. The controlled item includes a clock pulse generator 1, linear blocks 3, 8, 9, 10, multiplexer 12, decoder 13, shift registers 11, 28, elements 21-27, elements OR 14, 20, distributor 2, block 5 receiving, block 4 transfers, block 7 of actuating elements, drivers 16, 17 of address, comparators 18, 19, counter 29, pulse shaper 30, switch 31, codec 32, triggers 33, 34, delay elements 35, 36. The controlled point regulates the reception of data and commands from one or two control points with the possible intersection in time of information arriving at the controlled point from different control points. 2 Il.

Description

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It can exchange information with ODES1M or two control points, which allows building hierarchical network complexes. Controlled: the item includes a generator of 1 clock pulses, linear blocks 3,8,9,10, multiplexer 12, decoder 13, shift registers 11, 28, elements AND 21-27, elements OR 14, 20, distributor 2, block 5 receiving, block 4 gears, block 7 actuators.

drivers 16, 17 addresses, comparators 18, 19, counter 29, driver 30 pulses, switch 31, codec decoder 32, triggers 33, 34, delayed cops 35, 36. The controlled item regulates the reception of data and commands from one or two items of the Pack. If possible, the information received at the controlled point bt of various control points is possible to intersect. 2 Il.

The invention relates to time-division telemechanic systems combining control points1 and control points interconnected by communication lines of radial, trunk or chain configuration.

The purpose of the invention is to increase the functionality of the reliability of the device of the controlled point of the telemechanic system.

Figure 1 shows the structural diagram of the controlled point of the remote control system; FIG. 2 is a diagram of the possible connections between control points and controlled points.

The control point of the telemechanic system contains a generator of I clock pulses, a distributor 2, the first line unit 3, connected via a communication link with one control point device or another device of the controlled point (not shown), transfer blocks 4 and reception 5, sensor 6 controlled or parameters, block 7 of executive elements, quarter) 1st 8, second 9 and third 10 l1P units, second shift register 11, multiplexer 12, decoder 13, second element OR 14 block 15 16 and 17 addresses, comparators 18 and 19, first element OR 20, elements AND 21-27, shift register 28, counter 29, imager 30, switch 31, codec decoder 32, triggers 33 and 34, elements 35 and 36 delays.

For example, one transmission unit, one reception unit and two lpey-JBiix data retransmission units are shown (Fig. 1).

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The device of the controlled point can include any number of blocks, as well as heterogeneous blocks of reception and transmission, the number and type of which correspond to the required set of types and amount of information transmitted or received. In accordance with the types and volumes of information, the types and number of sensors 6 and actuators or information display elements are set in block 7 of actuators.

In Fig. 2, as an example, one of the possible options for connecting control points 37 and 38 with counter points 39-46 when using the proposed device of the control point is shown. Total cost of education channels

 Mind1 is achieved by using

 not only radial (connection between points 37 and 46), but also transit links - for control of paragraphs 40-43 and 45. The number of transit links can be more than one (in the example shown, three-foam transit is used for the connection of points 43 and 45). line connection).

From: The first feature of the proposed device is the ability to connect a controlled point, for example, 39 with control point 37, as well as control point 38.

Thanks to such a connection, it is possible to build complex hierarchical telemechanics systems, including several items

 controllers (communications between control points of the telemetry system are not shown), and the possibility is not excluded

connecting the controlled point to the main and backup lines of the link.

Controlled item of the remote control system works as follows.

In order to receive information from one of the control points or from another controlled point (or other controlled points), line unit 3 is used via one communication line, and line unit 8 is used from another control point. Signals from generator 1 arriving at the first input gate data received by blocks 3 and 8.

In the mode of receiving information, the blocks 3 and 8 form a signal 1 via the communication request bus, which is fed through the element 1 firmware 14 to the input of the distributor 2

In accordance with the number of the communication line over which information is received (i.e., the number of the linear unit, the first interrogation signal is set first), the signal 1 is set at the output

an element of And 25 or an element of And 26. Separator 2. This signal, passing

Cross links from the output of one element to the inverse input of another provide a blocking of the effect of the newly received request signal, if by that moment the request from the other linear block has already been received. This ensures the separation in time of reception of data received on different lines of communication, even in the case of a temporary intersection of these tributes; x.

The signal from AND 25 controls the multiplexer 12 so that when the active element is AND 25 and the information from the third output of block 3 arrives at the output of multiplexer 12, and when the active state of the AND element 26 goes to output 12, information received from the linear block 8.

When a signal 1 is formed at the second output of the distributor 2, the comparators 18 and 19 are allowed to work, which compare the preliminary receipt of the information package with the code of the address of the controlled point - recipient with the code assigned to this controlled point. To increase the survivability of the system, the address codes of a given controlled point when working with different control points may differ (this example). For this purpose, two address formers 16 and 17 addresses are entered into the device.

The code that goes to the corresponding input;; device input (addr. I

or adr.2), with the help of a format.peG1 16 and 17, also perceiving ..and from generator 1, is converted into an explorer according to the form and do i have with the code from the output of multiplexer 12 to comparators 18 and 19.

If compared, then G one; the comparator codes are the same, which means that the information is sent to this checkpoint item.

In this case, a signal 1 is formed at the first output of the comparator 18 or 19, and consequently, at the output of the element OR 20. At block 5, the information is received after the address of the functional block of the controlled item is set. / Vlpec block is registered by register 28, where the serial code from B1-1 input of multiplexer 12 is entered. After completing the input to the information register with the address of the function block, signal 1 is formed at the third output of the distribution 5

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through element 22, the recording of the parallel code from the first output of the register 28 (the output of the parallel code) into the counter 29 is permitted.

The third input of the selected functional unit receives the enable / address / signal from the output of the switch 3 1, and the quarter input receives the information code from the output of element 11 21. The latter passes through a piece of information received from linear block 3 or 8, because from Bceii the service information1, which includes the addresses of this item and the function block as the receiver of information, is removed. Thus, block 5 perceives only the content part of the package. All information sent from the output of multiplexer 12 goes the same way to codec 32, where it is checked that the code is not distorted by interference on the communication line or due to equipment malfunction.

The structure of the encoder-decoder 32 is determined by the form of the example Ie oh of the interference protection codes. For example, when using cyclic codes, the node is a codec-based decoder with reverse communications and modulo-two adders, the number and installation locations of which are determined by the received constituent waveform. The gels of the coder-decoder 32 did not detect distortion. After the completion of the reception

the entire parcel, when the signal I is formed at the fourth output of the distributor 2, the first output of the comparator 31 also generates a signal 1, which, acting in this mode on the enable input of the receiving unit 5, allows the output of the received information to the actuator 7.

The operation of the device during retransmission of information through a given point to another location using the transit communication line and the line block 9 1shi 10 is as follows

The reception and codes of the address of the controlled point formed by the former 16 and 17 do not match. Therefore, the element AND 21 is blocked by the signal from the element OR 20, and the element AND 23 is unlocked, because simultaneously the second outputs of both comparators 18 and 19 form signals 1, ensuring the formation of 1 by the element 24.

The first (informational) input of the And 23 element receives a serial code from the second output of the register 28, a repeating code attached by the linear block 3 or 8, but delayed by the time the code is analyzed by the comparators 18 and 19. The received address code of the controlled point is the recipient information is written to register 28, from where it, as in this example, is transferred to counter 29. However, in contrast to the specified mode, the address code of the function block that is next to the address code of the controlled item is transferred to It is the address of the controlled item. This code is interpreted as the address of one of the linear blocks 9 and 10, connected via a transit link to the addressed (or another intermediate) controlled point. The information in the selected second or third linear block 9 or 10 is directed through the element AND 23,

For the case when not one but several controlled points are connected to the transit link via the second or third line units (example connection shown in FIG. 2, for controlled points 39-42-43), information should be sent to this line unit for controlled points - retranslators and

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a lot of information. This can be achieved by submitting to the second or third linear block an enabling (address) signal when receiving the address of any of the monitored points connected to this line block by one multi-link transit link.

The implementation of supplying the required signals is used by the switch 31. The input busses of the switch corresponding to the addresses of the monitored points connected to one multi-level transit link are combined. The combined inputs forming one (group) output of the switch 31 are connected to the address input of the corresponding second 9 or third 10 line unit. The number and composition of the groups to be combined is determined by the actual structure of the links in the particular telemechanic system.

With various structures of connections in the telemechanic system, the structure of the parcels to the communication channels and the construction of the controlled point do not change - adaptation to a specific implementation of the system is associated only with switching the inputs of the switch 31, as well as setting the required number of linear units.

The mode of receiving information from the functional block 4 non-reliance and from the second 9, third 10 linear blocks the following.

In the mode when the input or output of information from block 15 is absent, the distributor 2 is held in the first position, which permits the operation of the counter 29 in the sequential counting mode. At the same time, the output of the commutator 31 is sequentially formed with the address, the signals, followed by the signal from the distributor 2, interpreted as a block readiness survey. The polling signal comes from the first output of the distributor to the inputs of the functional block 4 and all linear blocks.

If it is determined in the polling mode that one of the linear blocks 3 or 8 makes a request, then, as described, signal 1 is formed at the output of the SLI element 14 and signal 1 at the second input of the distributor 2 is transferred to the second position.

If, when addressing blocks 4 or 9, 10, a request is fixed, signal 1 is fed to the third input of the distributor 2, which is then transferred to the second position. In this case, in any case, after setting the address of the active (requesting) block, further change in the position of the counter 29 is blocked and the output of the data from the blocks begins.

The transmission modes from blocks 4 or from 9, 10 different mc. The information from unit 4 must be supplemented with the address code of this controlled point, the address code of the functional unit — the source of information (in order to facilitate the return transmission from the control point of the signal — a receipt confirming the receipt of data without parsing the type of information) and an additional security code (for example, cyclic code for a given generator polynomial).

When the data is received from the second 9 or third 10 linear block, the control point is only a repeater, due to which it does not perform any information transformations.

An indicator of the current transmission mode is an additional signal from block 4 (equivalent to the request signal) sent to the encoder-decoder 32. When this signal comes from block 4, the encoder-decoder 32 connects the generator 16 to the protection code generation circuits ( as the address of the controlled point, the signals from the output of the imaging unit 17), the counter 29 and the block 4 and sends to the second (informational) output a parcel containing the address code of this monitored item and the information source unit, informational d from block 4 and the generated coder-decoder 32 the security code.

The parcel formed by coder-decoder 32 is sent simultaneously to the third inputs of both linear blocks 3 and 8, which results in the transmission of information to both control points of the recipient of information.

The mode of data transmission from blocks 4 or 9, 10 must be completed by the receipt of signals — receipts confirming an unbiased reception by each recipient.

To receive signals - receipts and other services1. signals set

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There is an additional shift offset input 1 1, which receives data from multiplexer 12, clock signals from oscillator 1, and enables the signal from distributor 2.

After the reception of the service code is completed, the decoder 13 determines the receipt of the code — a receipt. The signal from the decoder is fed to the gate inputs (C - inputs) of the flip-flops 33 and 34, to the information inputs (D - inputs) of which 1 signals from elements 26 and 27 identifying the linear unit receiving the information.

By a signal from the decoder, one of the triggers is transferred to state P1e 1, and the other is held Or is transferred to state O. If the receipt signal is received from both the first and second points, receivers, then from state 1 to state O triggers 33 and 34, and the second translates to state 1.

The specified dynamic state of the triggers is interpreted as the arrival (with time separation) of signals — receipts from both receivers. The delay elements 35 and 36 are designed so that the signal I previously installed on the element's wake is held at the output for a time much longer than the time of setting the signal I at the output of elements 35 and 36. (For example, elements 35 and 36 can be used for example RC circuits in which the resistor is switched on by a diode so that the capacitor charging time is significantly shorter than the time it takes to dissolve). Due to the indicated inclusion of elements in the mode when one of the flip-flops is set to the state | and the other (previously set to state 1) is transferred to the state O, both inputs of the AND element 27 for a time equal to the difference of the delay time of the elements 35 and 36, signals I are given. As a result, at the output of the element 27, a pulsed signal is generated, returning both triggers 33 and 34 to the O state by a signal on the third (R) input. At the same time, a pulsed signal is sent to the transfer unit 4 which translates it into passive state . Thus, the information on both control points of the receiver is transmitted from the transmission unit at the same time, and received from liiix (for example, the signal — quintan-1pt) with time separation.

Due to the considered construction of the device, it becomes possible to organize hierarchical structures of telemechanics systems, in which exchange of control points between several control points is organized, for especially fusion controlled points, data can be exchanged simultaneously with two control points of the game with one control point along the main and backup lines. .

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Claims (1)

Invention Formula The controlled point of the tele-MoxaiHiiu system, containing a 0; i clock generator, the output of which is connected to the clock inputs of the first, second blocks, a transfer unit, a coder-decoder receiving unit, the first shift register, the first and second TPJieii address and distribution forms, the first output of which is connected to the 1P information, 1MP inputs of the first, second, third and fourth LJIX units, the transmission unit and the first input of the counter, the output of which is connected to the Iort: th input of the coder-decoder and to j: io,:; y 1; 1Orm pulse impulse, output (1g. 1 through the switchboard connector :; with the first, second, and fourth 1 and 1 and 2; and with the first input of the receiving unit, the output to The first is connected to the inputs of the executive unit iDiy. Elements, the second output of the distributor is connected to the first inputs of the first and second elements, the output of the first element II is connected to the input of the receiving unit, the first output of the first shift register is connected to the second input of the counter, the second output - to the first input of the third element And, the output of jcoTopoi o is connected to the second inputs of the second and third linear blocks cov, the first outputs of which are combined with the first output of the transmission unit and moreover} to the second distributor input, the third output of which is connected to the second input of the encoder-decoder, the first output of which is connected to the third inputs of the second and third linear blocks, to the first inputs of the first and fourth liner block and the third input of the receiving unit, a sensor whose output is connected to the second input of the transmission unit, the second output of which is combined with the second outputs of the second and third linear blocks and connected to the third input of the encoder-decoder, the outputs of the first and second address drivers are connected to the first inputs of the first and the second comparators, the output of the first address generator is connected to the fourth input of the coder-decoder, the multiplexer, the output of which is connected to the first input of the first shift register, the second input of the first and second comparators, the first element And the fifth input of the encoder-decoder 6, whose input is connected to the third output of the transmission unit, the first outputs of the first and fourth linear blocks are connected respectively to the first and second inputs of the multiplexer, the second outputs of the first and fourth linear and third outputs of the second and -. The third linear blocks are connected to the communication line, the second output of the encoder-decoder is connected to the second inputs of the first and fourth linear blocks, the OR elements, the output of the first OR element is connected to the BTopONry input of the second And element and the third input of the first And element, the first outputs of the first and second the comparators are connected according to the first and second inputs of the first element OR, the second outputs are connected to the inputs of the fourth element AND, the output of which is connected to the second input of the third element AND, the output of the second element AND is connected to the third input the counter, the output of the second element OR is connected to the third input of the distributor, the third outputs of the first and fourth linear blocks are connected respectively to the first and second 1 inputs of the second OR element, the fourth output of the distributor is connected to - the third inputs of the comparator, the first trigger, characterized in that , in order to increase the functional reliability, the fifth, sixth, seventh elements And, the second trigger, the decoder and the second shift register, whose output through the decoder is connected to the first inputs of the first and second flip-flops, the second inputs of which are combined with the third input of the transmission unit and connected to the output of the η tot) -I element, the outputs of the first and second flip-flops are corresponding to the first and second delay elements connected to the first and second inputs of the fifth element and the third outputs of the first and fourth linear blocks respectively are connected respectively to the first inputs of the sixth and seventh elements And, the output of the last one is connected to the third multiplex pa and the first trigger and inverse input of the sixth And element, the output of which is connected to the inverted input of the seventh element And and the input of the second trigger, the multiplexer, generator outputs and the fourth distributor output are connected to the first, second, third inputs of the second shift register, respectively. ttO m V / Fi9.2