SU978177A1 - System for remote indication having time-shared channels - Google Patents

Description

This invention relates to automation and telemechanics.

A known system for tele-signaling with time-division signals, containing N serially connected peripheral devices, each of which contains a clock receiving unit and a clock receiving unit, the inputs of which are connected to the first input of the peripheral device, the second input of which is connected to the first input of the register the signal inputs of the peripheral device are connected to the corresponding second inputs of the shift register, the third input of which is connected to the output of the npasN block of clock pulses, you The shift register is connected to the output of the peripheral device, and the receiving device, whose input is connected to the communication line, contains a synchronization unit, clock generator and clock generator, shift register, the output of which is connected to the first input of the AND element, and output of the AND element is connected to the input block of the terminal transformation 11 3.

The disadvantage of this system is its complexity and a large number of different types of functional units.

The closest in technical essence to the present invention is a time division multiplexing system consisting of monitored points, each of which contains a synchronizer, the first output of which is connected to the first input of the information signal generator, the output of which is connected to the first input of the OR element, and the receiving point, which is equipped with a memory block whose output is connected to the input of the information signal converter, the output of the OR element of each controlled point is connected cutting the communication line 20 with the second input of the OR element of each subsequent controlled point, the output of the OR element of the first controlled point through a communication line is connected to the first input of the memory unit, as well as at each controlled point the clock pulses and sync pulses, selective element and the inverter, the receiving device also contains the for- mation. whether sync pulses and clock pulses, shift register and element. And 23. A disadvantage of the known system is its complexity, due to the fact that the organization of the ordering of information transmission from peripheral devices to the receiving one is carried out by a fixed device, for which the latter contains a synchronization unit and drivers of clock pulses and sync pulses. contain, respectively, blocks receiving clock pulses and clock pulses, as well as selective elements. The purpose of the invention is to simplify system / w. . The goal is achieved by the fact that the system for time-divided TV remote signaling, containing a synchronizer at each of the monitored points, the first output of which is connected to the first input of the information signal shaper, the second inputs of which are connected to the information inputs of the system, and the output of which is connected to the first input of the OR element, at the receiving point contains a memory block, the output of which I is connected to the input of the converter and the formation signal, the output of the OR element of each controlled the point is connected via a communication line with the second input of the OR element of each subsequent monitored point; the output of the OR element of the first controlled point is connected to the first input of the memory unit through the communication line; an address driver and a pulse generator are input at each controlled point; to the synchronizer input and to the third input of the information signal shaper, at each controlled point, except the last one, the second synchronizer output through the address shaper is connected to the third input ID of the IDN element, at the last controlled point, the second synchronizer output through / address generator is connected to the second input of the OR element, at each controlled point, besides the last one, a delay element is inserted, the output of which is connected to the input of the pulse generator, at the receiving point the signal is entered and an address selector, the output of which is connected to the second by the input of the memory unit through a signal depot, the output of the OR element of each preceding controlled point is connected through a communication line to the input of the rear element The holders of each subsequent controlled item, the output of the element OR the first controlled item through. The communication line is connected to the input of the torus of the address of the receiving point. The drawing shows the scheme of the proposed system. The system contains the last monitored item 1, a group of monitored items 2 and a receiving item 3 connected between each other by segments of the link 4. The last monitored item 1 contains a pulse generator 5, a synchronizer b, an address shaper 7, an information signal shaper 8, and an OR element 9. The rest of the monitored items 2, in addition to the above blocks, also contain a delay element 10. Information inputs 11 of each of the peripheral devices are connected to monitored objects. Receiver 3 comprises an address selector 12, a decoder 13, a memory block 14, and an information signal converter 15. The formers 7 and 8 can be executed both in the form of serially connected shift registers (in this case, the control pulses from the synchronizer output B shift these registers), and in the form of storage registers with matrix distributors (in this case, from the synchronizer outputs b, the spatially separated and time-shifted impulse d supplied to the interrogation tires of these distributors are removed;. The impulse generators 5 can be of arbitrary design allowing them to be forcedly started. system operation it is necessary that the period of self-oscillations of the generators in each of the controlled points 1 and 2 was different, and the more the closer to the receiving point 3. the peripheral device is turned on. Thus, the generator 5 of the pulses of the last controlled point 1 must have a minimum period of self-oscillations. during the operation of the system by a generator of 5 pulses of the last controlled point 1, periodic forcing of pulses at its output, each of which, entering the driver 8, causes It registers the signals describing the current state of the monitored objects and entering the shaper 8 via information inputs 11. The same pulse from the output of the pulse generator 5 triggers synchronizer b, which sequentially generates polling pulses at its outputs to the input of the former 7, and then to the entrance of the former 8. Accordingly, first

the address signal of the last monitored item 1, and then the information signal is output through the element OR 9, the segment in the communication line 4 is connected to the output of this device, from where it goes to the inputs of the nearest monitored item.

In this device, a sequence of address and information signals of the last monitored item 1, first, through the element OR 9 enters the output of the device and then into the next segment of the communication line 4, and, second, through the element 10 of the delay to the input of the generator 5 , causing the appearance of a pulse at its output, after which the device performs all the same operations as in the last monitored item 1. The delay element 10 ensures the delay of signals from the input of the device to the generator input 5 pulses, equal to or not how much longer is the duration of the aggregate of the address and information signals of the last monitored item 1, so that from the output of this monitored item 2 through the length of link 4 the input of the monitored item 2 already receives a sequence of aggregates of the address and information signals of both the monitored items 1 and 2.

Further, the passage of these signals through other controlled points is carried out in a similar way, and due to the appropriate selection of the parameters of the delay elements 10 in these devices, eventually a sequence of sets of address and information signals of all the controlled points 1 included in the system enters the input of receiving point 3. and 2.

In the receiving point 3, the selector 12 successively selects the addressable signals from the sequence of signals arriving at its input, in each case a signal is generated at its output that identifies the corresponding address signal, which then arrives at the input of the decoder 13, at the output of which the signal that selects the appropriate cell of the memory block 14, into which the information signal following the given address signal is written. After all the information signals have been recorded in the memory block 14, they are output by the converter 15, where, in the form of an operator perception, the signals describing the current state of the controlled objects connected to the system are reproduced.

After the generator generates 5 pulses of the last controlled point 1, the next pulse is formed at its output, the next cycle of transmission of information about the state of control objects to receiving point 3, etc., will occur.

In case of failure of one of the monitored points (1 or 2) or any of the segments of the communication line 4

0 information transfer cycles are initiated by the generator of 5 pulses of the most distant monitored points 2 in the circuit that remain operable, although with a slightly lower frequency. According to the amount of information that is output in this case to the converter 15, the place of failure can be easily determined.

Thus, the proposed system by using only

20 simplex information transmission reduces the amount of equipment spent on it.

25

Claims (2)

1. USSR author's certificate 478346, class, G 08 C 19/28, 1974. 2. USSR author's certificate 860109 according to application 2828824 / 18-24, -. G 08 C 19/28, 1979 (prototype). I: ; .J