SU1182564A1 - Device for gathering information from distributed objects - Google Patents

Abstract

1. DEVICE FOR COLLECTING INFORMATION FROM DISTRIBUTED OBJECTS, containing a clock, a decoder, a display unit and in each information channel a receiver, a memory unit and the first control key, the first output of the receiver is connected to the first input of the memory unit, the output of the first control key of each information channel is connected to the corresponding input of the display unit, the output of the decoder is connected to the combined first inputs of the first control keys of the information channel keys, the first output A clock generator is connected to the first inputs of information channel receivers, characterized in that, in order to increase the speed of the device, enter a dynamic control unit into it and each information channel — the second control key, trigger and reference unit — the second output of the receiver is connected to the first input the comparison unit, the second input of which is connected to the first output of the receiver, the output of the memory unit is connected to the first input of the second control key and to the third input of the comparison unit, the output of which connected to the first input of the trigger, the direct output of which is connected to the second input of the memory unit and to the corresponding first control input of the control unit of the dynamic control unit, the outputs of which are connected to the combined second inputs of the trigger and control keys of the corresponding information channels, inverse outputs of the § trigger information channels are connected to the corresponding second control inputs of the dynamic control node; the outputs of the second control keys of the information channels are combined and connected to the input of the decoder, the first and second outputs of the clock pulse generator connected to first 00 and second clock vhrdu diIamicheskogo control node, a second input receiver ate information channel l is centuries corresponding input ust4 roystva. 2. The device according to claim 1, characterized in that the dynamic control node contains, by the number of information channels, control blocks, each of which is executed on a trigger and elements AND, the output of the first element AND is connected to the first input of the trigger, the output of the second element AND of each previous block control, except the last, is connected to the combined first inputs of elements And the subsequent block

Description

The combined first inputs of the elements And the first control unit are the first clock input of the dynamic control node, the second inputs of the control unit triggers are combined and are the second clock input of the dynamic control node, the output of the trigger of each control unit

the output of the dynamic control node, the second input of the first element AND of each control unit, and the second input of the second element AND the control unit, except the last one, are respectively the first and second control inputs of the dynamic control node.

one

The invention relates to telemechanics and may find application in telemetry data acquisition and transmission systems.

The purpose of the invention is to increase the speed of the device.

Fig. 1 shows a block diagram of the proposed device, Fig. 2 shows an example of implementation of the dynamic control node J in Fig. 3, the algorithm of operation of the device.

The device comprises a clock pulse generator 1, a dynamic control node 2, a decoder 3, an information display unit 4, a receiver 6 on each information channel, a memory block 7, a trigger 8, a comparison block 9, a first 10 and a second 11 control keys.

The dynamic control node (Fig. 2) consists of N 1Zjr-12 blocks, the controls, each of which contains the first 13 and second 14 And elements and the trigger 15.

The device works as follows.

Via communication channels with N monitored points, information is continuously fed to the inputs of the corresponding information channels (devices. Received combinations arrive at receivers 6, in which the code dressing, clock and cycle synchronization of the device are recorded, the code-protected code used in the system is detected The operation of receivers 6 is provided by the first clock sequence of generator 1 (it is assumed that

The structure of messages from all controlled items is the same).

In the absence of errors in the code sequence of this code combination, it receives from the receiving unit 6 a parallel code to the first input of the memory block 7 and the second input of the comparison block 9 of the corresponding information channel 5. At the same time, the signal from the second output of the receiver 6 is received from the compare block 9, to which the latter compares the code combination stored in block 7 with the code combination received by receiver 6 in the next cycle.

If the code combinations are different, which indicates a change in the state of the object under control, then the signal from the output of block 9 to the first input of trigger 8 causes the switch to switch trigger state 1. The signal corresponding to logical 1 is sent from the direct trigger output the input of memory block 7 provides recording of the received code combination into it. At the same time, this signal is fed to the second input of the first element And 13 of the corresponding control unit of the dynamic control node, while the inverse output of the same flip-flop to the second input of the second element And 14 receives a signal corresponding to the logical 0.

If the code combination received in the next cycle does not differ from the code combination stored in block 7 (this indicates that the state of the object of the controlled point has not changed), the signal at the output of block 9 does not appear and the trigger 8 remains in the initial (zero) state, and the written codeword is not written to the memory block. From generator 1, node 2 receives two phase-shifted clock pulses (the value of the smallest possible phase shift is established depending on the speed of the blocks, which ensures the decryption and display of code combinations). The pulses arriving at the first input of node 2 of the dynamic control arrive at the first inputs of the first 13 and second 14 elements AND of the first control unit. If the second input of the second element I 14 receives a signal corresponding to the logical inverse output of the trigger 8, then through the element 14 the pulses from generator 1 arrive at the first inputs of the elements 13 and 14 of the next control unit. If from one of the information channels 5 a signal corresponding to logic 1 is output from the direct output of trigger 8, indicating a change in the code combination in memory block 7, then the pulse from the first output of generator 1 is fed to the first input of trigger 15, which is triggered , and the signal from its output is fed to the first 10 and second 11 keys of the corresponding information channel 5. The code combination recorded in block 7 is read by parallel code to the decoder 3, the decryption result through the public key 10 goes to the corresponding At the same time, the trigger 8 of the corresponding information channel 5 is transferred to the initial state. After the decryption and output of the information to the information display unit 4, the second input of the node 2 receives a pulse of the second clock sequence from the generator 1 output. It is applied to the first inputs of the flip-flops 15 and resets the corresponding trigger 15 to the initial state. When the next pulse arrives, the first generator 1 sequence polls the next memory block 7, in which the information has changed. Fig. 3 illustrates the algorithm of the device and its main elements in case of changing the object state of only one (i-fo) controlled point, as well as in the case of a simultaneous change in the state of objects at two controlled points (1 Km). In the known device, the time of one cycle of operation of the ring distributor is constant and selected taking into account the possibility of sequential connection to the decoder of memory blocks of all information channels, regardless of whether they have a code combination for decryption or not. This leads to the fact that the received information about the state of objects is output for processing in a computer and to a display unit with a delay, the average value of which is defined by the expression where T is the pulse period at the output of the clock generator; division ratio of the frequency divider; the number of controlled items. Moreover, this time remains constant even if the intensity of changes in the state of objects is very small. In the proposed device, the average delay time depends on the number of changes in the state of KP objects that occurred during a time equal to one pulse following period where m is the average number of objects in which the state changes over time T. The gain in time is tJL. 4i Assume that changes in state and objects represent independent events. Then the average number of objects m in which state changes occur during one

period of the pulse, equal to the expectation

N i is the number of objects that have changed states during the time p (i) is the probability of a change in the state of i objects. With a binomial distribution of changes in the state of objects where p is the probability of changing the state of an object in time T.

Wherein

r 2p

K 2pN Let p 0,1 (which indicates a sufficiently large intensity of changes in the states of an object during time T), when K 5r. The proposed device always provides a reduction in the time for issuing information for processing and display, and the gain is greater, the smaller the intensity of the flow of changes in the state of objects, characterized by the probability p.

Claims (2)

1. DEVICE FOR COLLECTING INFORMATION FROM DISTRIBUTED OBJECTS, containing a clock pulse generator, a decoder, an information display unit and, in each information channel, a receiver, a memory unit and a first control key, the first output of the receiver is connected to the first input of the memory unit, the output of the first control key of each information the channel is connected to the corresponding input of the display unit, the decoder output is connected to the combined first inputs of the first control keys of the information channels, the first output is generator a clock pulse is connected to the first inputs of the receivers of information channels, characterized in that, in order to increase the speed of the device, a dynamic control unit and each information channel is introduced into it - a second control key, a trigger and a comparison unit, the second output of the receiver is connected to the first input comparison unit, the second input of which is connected to the first output of the receiver, the output of the memory unit is connected to the first input of the second control key and to the third input of the comparison unit, the output of which is connected to trigger input, the direct output of which is connected to the second input of the memory unit and with the corresponding first control input of the control unit of the dynamic control unit, the outputs of which are connected to the combined second inputs of the trigger and control keys of the corresponding information channels, the inverse outputs of the triggers of information channels are connected to the corresponding second control the inputs of the dynamic control node, the outputs of the second control keys of information channels are combined and connected to the input of des Ifrator, the first and second outputs of the clock generator are connected respectively to the first and second clock input of the dynamic control unit, the second input of the receiver of the information channel is the corresponding input of the device. 2. The device according to claim 1, wherein the dynamic control unit contains, according to the number of information channels, control units, each of which is made on a trigger and AND elements, the output of the first element And is connected to the first input of the trigger, the output of the second element And of each previous control unit, except the last, is connected with the combined first inputs of elements And the subsequent unit SU „, 1182564 equations, the combined first inputs of the AND elements of the first control unit are the first clock input of the dynamic control unit, the second inputs of the triggers of the control unit are combined and are the second clock input of the dynamic control unit, the trigger output of each control unit is the corresponding output of the dynamic control unit, the second the input of the first AND element of each control unit and the second input of the second AND element of each control unit, except the last, are respectively the first and W rymi dynamic control inputs node councils Lenia.,