SU879619A1 - Device for gathering data from distributed objects - Google Patents

Description

(54) DEVICE FOR COLLECTING INFORMATION FROM DISTRIBUTED OBJECTS The invention relates to the field of telemechanics and may find application in telemetry systems for collecting and transmitting data. Systems and devices are known that continuously collect information from dispersed controlled points (CP) to a central dispatch station. A device containing linear nodes whose input is connected to communication channels (device inputs) is known, a clock generator, the output of which is connected to the first input of the control unit for receiving television signals (receiving unit) and the input of pulse distributor, the output of which is connected to the second input of the receiving unit , the third input of which is connected to the output of the linear nodes, the output of the receiving unit is assigned to the combined inputs of the TV signaling unit, the outputs of which are connected to the inputs of the display panel State of gearbox. In addition, a device specifies the operation mode block that coordinates the operation of all device blocks. This device receives serial transmissions of TV signals about the state of the control unit when they receive the last signals from the application for transmission of television signals. With the simultaneous receipt of applications from all CPs, the total time of receiving information on the status of all CPs will be Tu N-T, where N is the CP number, T is the average duration, of a message transmission from one point. With such an algorithm of operation of the device and in the presence of objects with a rapidly changing state on a CP, a high accuracy of the display of the actual state of the objects at the current time point is not ensured. The closest in technical essence to the invention is a device for receiving information from dispersed CSs, containing in each information channel a control key, a linear unit whose input is connected to the corresponding input of the device, and an output to the first input of the receiving and control unit of information. which keys to the first input of the memory block. The device includes common elements: a clock pulse generator, first and second pulse distributors, a decoder and an information display unit. The output of the clock pulse generator is connected to the combined second inputs of the receiving and monitoring units of all information channels and to the input of the first pulse distributor, the output of which is connected to the combined third inputs of the receiving blocks and KOHT the role of all information channels and to the input of the second pulse distributor. The outputs of the second pulse distributor are connected to the second inputs of the memory blocks and control keys, the outputs of which are connected to the corresponding inputs of the information display unit. The input of the decoder is connected to the combined outputs of the memory blocks of all information channels, the output of the decoder is connected to the combined first inputs of all control keys 2. In this device, due to the presence of N independent information channels, information is continuously received from N distributed CPs. Decryption of received signals is performed using one decoder cyclically, and for a time interval equal to the duration of one code combination (the structure of signals in all communication channels is the same), the decryption of received code combinations from all points occurs. The sequential cyclic connection of the decoder and the information channels of the device are controlled from the second distributor, which generates phase-shifted from the local clock generator for each channel. One relative to the other is a periodic sequence of pulses with a follow-up period of -fc. The outputs of the distributor are rigidly fixed to the data feeds, which is a drawback of the device. Due to the instability of the clock pulse generator KP and the device described above, as well as due to the fluctuation of signal transmission delays in communication channels, loss of received information or the occurrence of spurious code combinations resulting from the superposition of two correctly received adjacent combinations are possible. If one avoids delays in the communication channels, then in the worst case, when, due to instability, the frequency of the clock pulse generators increases, and in the device in question it decreases, then at intervals of -fc | i / 2 K, cases of false decoding and loss of information (K is the generator instability coefficient) will occur in each information channel. The aim of the invention is to increase the reliability of operation of the device by eliminating false decryption of information. The goal is achieved by the fact that the device for collecting information from dispersed objects, containing a clock generator, pulse distributor, decoder, information display unit and, in each information channel, a line unit, the input of which is connected to the corresponding device input, output with the first input an information receiving and monitoring unit, the first output of which is connected to the first input of the memory unit, and the control key, the outputs of the memory blocks of all information channels are combined and connected to the input the decoder, the output of which is connected to the combined first inputs of the control keys of the information channels, the outputs of which are connected to the corresponding inputs of the information display unit, the first output of the clock generator is connected to the combined second inputs of the reception and control information blocks of the information channels and frequency divider. The second output of the pulse generator is connected through the frequency divider to the input of the pulse distributor, the outputs of which are connected to the first inputs of the storage unit, the second of which are connected to the second outputs of the receiving and control units of the corresponding information channels. The outputs of the memory block of the request are connected to the combined second inputs of the memory blocks and control keys of the corresponding information channels. FIG. 1 shows the cTpjTCTypHaH diagram of the proposed device / in FIG. 2 - timing diagrams explaining its operation, for the case when the number of KP N 4. The device contains a generator of 1 clock pulses, distribution; itel 2 pulses, decoder 3, block 4 of the display ingNormash, and in each information 58796196

channel 5 (vj - linear block 6, phase out with control of 1 signal

Claims (2)

the reception and control unit 7, the memory unit 8 of the output of the pulse distributor 2 and the control key 9, the device also contains a frequency divider 10 and the storage unit 11. The device works as follows. From the communication channels of information with N KP, they are continuously fed to the inputs of the corresponding information channels 5 - 5 j of the device. Through linear blocks 6, interfacing devices with communication channels and primary signal conversion, the received code combinations arrive at the information receiving and control units 7, in which code messages, clock and cycle synchronization are recorded, and the matching of code combinations is checked in the system of noiseproof code. The operation of blocks 7 is ensured by the first clock sequence of generator 1 (it is assumed that the structure of the messages from all the controllers is the same). In the case of correct reception, code combinations from the receiving blocks by the parallel code are read into blocks 8 of the memory, each of which is designed to store one combination. At the same time, from the second outputs of blocks 7, the unit is written into the corresponding memory cells of block 11. From the second clock sequence of generator 1, which is out of phase with respect to the first one by 180, divider Yu forms a pulse sequence. with a follow up period equal to or less. The values of t K / 1 i K are the nominal duration of one code combination. The ring distributor 2 pulses, to which the shifting pulses are received from the output of the divider 10, produces a continuous sequential interrogation of the cells of the memory block 11 in such a way that over an interval of time equal to t X.. N + 1 block cells are interrogated. If a unit has been stored in the cell of block 11, then a pulse is generated during its interrogation, which arrives simultaneously at the control input of memory block 8 and at the input of key 9 of the corresponding information channel. The code combination recorded in block 8 is read by a parallel code B decoder 3. The decryption result through the public key 9 goes to the corresponding section of display unit 4 for visually monitoring the status of all KPs Due to the fact that the output signals of the receive and control unit 7 cannot be combined 11 of the memory of the order, the risk of loss of information is eliminated when writing code combinations in the memory blocks 8. Introduction to the device of the 1O divider frequency, which provides a shorter (N t) / N + l cycle of the distributor 2 as compared with the prototype, as well as the use of a new element — a memory block per unit — makes the device adaptive to fluctuations of delays in the canals connection and to changes in the phases of the moments of reception of code combinations and interrogation of memory blocks. As a result, loss of received information and false decryption are completely eliminated, i.e. the reliability of the device operation is increased. FIG. 2 illustrates the most severe case when, due to the instability of the support generators, the phase of the received signals is ahead of the phase of the generated control pulses of the device's frequency divider. However, this does not affect the quality of the device operation. It is easy to see that with any other initial arrangement of the output pulses of the memory block, the relative moments, the corresponding values of the coding of the combinations, the losses and the false information are lost. Apparatus of the Invention A device for collecting information from distributed objects containing a clock pulse generator, a pulse distributor, a decoder, a display unit and 1 information, and n each information channel, a linear block, the input of which is connected to the corresponding input of the device, the output - the first input of the receive and control information , the first output of which is connected to the first input of the memory unit, and the control key, the outputs of the memory blocks of all information channels are combined and connected to the input of the decoder, the output The first output of the clock generator is connected to the combined second inputs of the reception and control units of the information channels, characterized in that, in order to increase the reliability of operation, the first outputs of the control keys of the information channels, the outputs of which are connected to the corresponding inputs of the information display unit. devices, a memory block and a frequency divider are entered into it, the second output of an impulse generator via a frequency divider is connected to the input of a pulse distributor The terminals, which are connected to the first inputs of the storage unit of the storage unit, the second of which are connected to the second outputs of the receiving and control units of the corresponding information channels, the outputs of the storage unit of the storage unit are connected to the combined second inputs of the storage units and control keys of the corresponding information channels. Sources of information taken into account in the examination 1. A. M. Pshenichnikov and M. L. Portnov. Telemechanical systems on integrated circuits. M., Energie, 1977, p. 2O5, fig. 6-3. 2.Avtorukoe you will see, the USSR Pvstr by application number 2751882 / 18-24, cl. Q 08 C 19/28, 12. (04.79 (prototype). 0 & f.f