SU690523A1 - Multichannel telemetry transmitting apparatus - Google Patents

Description

: - /: -.: V. /: The device is sent to telemetry and can be used in the radio Eemet. rynshema ststemah with the distribution of channels in the form. Technical solutions are known that relate Shnes to telemetry transmission with a reduction of its accuracy. The device is a device containing a synchronizer, a redundancy redundancy block, a code group generation unit, a code address block, a code generation unit, a code interval block, a code signal generation unit. These technical solutions are based on the principles of} removing the switches from the K-switch and comparing the counts with the hell out of those readings of the same channels, and if there is more than a certain value called Gaperturry, then the count is considered substantial and there will be a transfer to LIVIA, as well as a drop-in from memory instead of the previous one, in the case of a dispute it is considered to be RbtM, and nb is learning ij. The disadvantages of such trajectories are that, due to the principle in which the time division of the channels works, they will be unevenly measured, ia; Devices require a buffer stop-locking device to equalize the sampling rate, the use of a buffer memory device leads to the possibility of some significant samples) of overflowing it. In addition, essential samples must be assigned an address in the form of additional code bits in the temporary binding code. This contributes to the accuracy of the search for service information. When transmitting cyiriecTewnmh counts to digital, all bits of the word are transferred to the word, while their values only do not change; they don't like them, so there is a lot of accuracy in the information layers themselves. On the excess characters in the transmitted messages, a portion of the energy is expended, which the 3G ro could be used to transmit the OUTCHMIDCH CHMBOJiOB. Thus, the presence of redundancy in this case leads to a decrease in the noise immunity of the transmitted data. The closest to the technical essence of the invention is a transmitting multi-channel telemetry device containing a synchronizer, the first, second and third outputs of which are connected respectively to the clock inputs of the code word generator and the switch and through driver of clock pulses to the first input of the OR element, outputs of the code word generator connected to the first inputs of the corresponding modulo-two adders, the output of which jbix is connected to the information inputs of the key block, the outputs of which are connected to the first inputs of the logical coding block, the outputs of the logical coding block connected to the second input of the OR elements connected to the output of the device 2. This device cannot be used for adaptive telemetry systems directly, since there are no control actions on the keys in the event of the occurrence of redundant readings and redundancy analysis is not performed, moreover, are transmitted all digital rows of significant samples, which preserves the redundancy of the transmitted message. The proposed technical solution is to eliminate these drawbacks due to the fact that only those bits in the real countdown that have changed their value are transmitted. When using the method of separating signals in a form, additional addressing of channels is not required, since the address indication is a form on the carrier, which provides additional possibilities for compressing messages. .. There are optimal values of the number of transmitted bits at which the noise immunity of messages with the separation of signals exceeds the method of the pulse-modular mode, this is achieved due to the fact that the reduction of excess bits fully utilizes the time interval for the transmission of a significant count. . The aim of the invention is to increase the information content of the device. This goal is resolved by introducing into the device blocks of information compression and an analog-digital converter, whose inputs are connected to the output of the switch, an output of an analog-digital converter connected to the first inputs of compression information blocks and the second inputs of the corresponding modulators two, fourth synchronizer output connected to the second input of blocks of information compression, the first and second output of each block of information; Compressions are connected respectively to the control inputs of the key block and to the second inputs of the logical coding block. Each compression information block contains a differentiating element, a comparison element, a control trigger and a memory trigger, the inverse output of which is connected to the first input of the comparison element, the second input of which is connected to one input of the control trigger, the inverse output of which is connected to the second output of the compression information block and through the differentiating element to the memory trigger input, the direct output of the control trigger is connected to the first output of the information block, compressed, the input of the comparison element is connected to the first input Lok compression, the other input of the control latch is connected to the second input of the compression information. The logical coding block contains the adder of the number of units {Schide, the comparison element, the decisive element and the zero number adder, the output of which and the output of the adder Number of units are connected to the inputs of the comparison element, the output of which is connected to the output of the logical coding block through the decisive element, the zeros and the first inputs of the adder of the number of units are connected to the first inputs of the logical encoding unit; in the upstream inputs of the adder, the number of units are connected to the second inputs of the logical encoding unit. The drawing shows the proposed device. It contains synchronizer 1, codeword generators 2, switch 3, analogue 4 of converter 11, rounding blocks {5formats 5j -5 ,,, pulse generator 6, modulo two 7, key block 8, logic coding block 9, element OR 10. A block 51-5 contains a comparison element 11, a memory trigger 12, a control trigger 13, a differentiating element 14. A logic coding block 9 contains an adder of the number of zeros 15, an adder of the number of units 16, an element of the comparison 17, a decisive element 18. The device works as follows. Synchronizer 1 provides sync signal to generator 2, switch 3, converter 4, blocks 5 | -5ts, driver 6. The analog signal is turned off by switch 3 simultaneously from Bciax channels with a period equal to the sampling period, and is converted in converter 4 into parallel binary code, which is stored at the output of converter 4 until the next polling moment. In block 5, bit counts are compared with the previous substantial samples of these channels. If any bits of the digital code of essential samples do not coincide, the values of these bits are given to adders 7, where they modulate the code words periodically coming from oscillator 2. From the control outputs of block 5, in this case, control signals are given, which in block 8 open key circuits corresponding to non-redundant bits, and pass, on the inputs of block 9, code words modulated or close key circuits corresponding to excess bits, in this case empty words are output to the outputs of these circuits a consisting of only zeros. Simultaneously, from the blocks 5, -5, control signals are issued for the second blocks of block 9, and so many units are output to these inputs, how many empty words are sent to the first inputs. Block 9 symbolically analyzes the values of all code words; output words, compares the number of zeros and ones, while not taking into account the number of zeros obtained by empty code words, if the number of ones is greater than the number of zeros, then. at the output of block 9, the symbol of units is output; otherwise, the symbol is zero. In the case of equality of the numbers. And zero and single characters accept-. With the decision to issue a zero or one according to the rule applied in the prototype, in the OR element 10 a pulse is added to the generated frame received from the former 6. Analog interrogation by the switch 3, the input of the converter 4 is fed to a count, the amplitude of which is equal to the amplitude of the parameter the time of the survey. In transducer 4, the analog sample is converted to digital and stored for the polling interval time in transducer 4. Suppose that the first bit is one and is :. unsuitable, the second bit is one and is redundant, the third and fourth bits are zero and are accurate. From the converter, 4 bit values are transmitted to the information inputs of blocks 5 | -5, on the first outputs of which signals appear, is open. The key is in the block of 8 altogether unremarkable bits, and the signal that closes the key corresponds to the second bit. In the adders 7, the modulation of code words is carried out, and for this example the code corresponding to the first and second p (the arrays are inverted). Block 8 passes only those code words that correspond to non-redundant bits and gives an empty code word. a word for over-discharge. Block 9 ank.ziruet code words corresponding to fussy problems, and outputs a binary result signal. The device contains n blocks .5j-5. And n is equal to Produced number of channels by the number of bits, cat The swarm is diverted for one channel. In the initial state, the trigger 13 is set by synchronizer pulses of the synchronizer 1. At the same time, a zero potential is supplied to the corresponding key of the block 8 from the direct block of the trigger 13 and fixed in invert output is supplied to the unit potential 9. This corresponds to the fact that an empty code word is fed to one of the informa tion inputs of block 9. Block 5j-5j, for each bit, works as follows. The value of the bit comes from the output of converter 4 and is compared in the comparison element with the value of the previous count bit stored in memory trigger 19. If these values match, then the discharge is considered redundant and comparison element 11 does not work, and trigger 19 remains initial state. If these values do not coincide, then the discharge is considered significant and the comparison element 11 generates a pulse that flips the control trigger 13, then the trigger opens the right code in block 8, and from the input of block 9 removes a single potential, which indicates that the information input of the Q block is supplied with the code word corresponding to the non-zero value of the bit. The initial position of trigger 13 is reset by the low-power feaifiijSO low key 1, while the positive pulse from the inverse output is differentiated by element 14 and interfacing the tpHf ger 12, thus the new value of non-bit-bit will be added to trigger 12. Block 9 works as follows. The inputs of the adders 15 and 16 simultaneously receive all the code words, the sum of the torus 15 bp is assigned to the number of zero symings, including those that are studied in lei & 1c SYMBOLS of empty cpc (empty cbd words consist of one zeros) and the summamamamamama single characters. The number of single and zero from 1 waves is compared in comparison element 17, which gives the result of comparison to decisive element 18, where, according to the received rule, solution 6 is returned to the output of zero and single inputs. So Kak adder 15 takes into account all zero words SYMBOLS of code points ) in this case, null characters of empty code words, then the latter must be compensated by adding TaKde the same number of single characters to the adder 16. Thus, when comparing in an element, it will turn out that the number of null characters, the spool string, due to empty, KODOV1, words ; ks love routes with the same number of single characters, null characters of empty KOflOSiix words are excluded. From extensions “. PIP, and "tadvziriyutsya SYMONYOL coding of words belonging to the essence of time. ;;.; V,; -: -; - ;; -.; -; .-; -. . , Faure y m A a and 3 and those of the p audio multichannel telemetry 1. Yerodayushoe y stroystvo, sodorzkascheo synicpoHHaaTop, the first second and third vb1 hodM which shykpyu eyt sootetstoonkb to cd FSL iairuyushsh inputs ireiaefiaTO-. pa codewords and switch and via device; Sikhroimpulsvo to the first input of the OR element, the outputs of the code word ra are connected to the first VH 6 23 by the corresponding modulo-two adders, whose outputs are connected to the information inputs of the key block, the Encodes of which are connected to the first inputs of the logical coding block, the first of the logical coding blocks are connected the second input is an elenant ORenta, which is connected to the output of the device, of which they are, so that, in order to understand the information content of the device, information compression blocks are introduced into it. It is an i-tsffOvI yreoba, the inputs of which are connected to the output of the comm. The output of the analog-digital converter is provided with the first inputs of the compression information block and the inputs of the corresponding modulo-two adders, the fourth time of the synchronizer is connected to the second input of the information compression blocks), the first and second outputs of each information compression block are connected to the control input inputs of the key block and with the second inputs of the logical iodization unit, 5. Device pop. 1, which differs in that each information compression block contains a differentiating ELEMT, a trigger element, a control trigger and a memory trigger, the inverse output of which is connected to the first input of the comparison element, the second input to, is connected to the same input of the control trigger, the inverse output of which is connected to the second output of the szh-block. This information and through the diff (the first element of the memory trigger input, the direct output of the trigger trigger is connected to the first output of the access information device MiBiiiaH, input and comparison compared to the first input of the compression unit, and the other input has a different input, and the other input has a different input from the first input of the compression unit, and the other input has a different input. the trigger is connected to the second input of the information compression block;, ;;:. 3. Device up to item 1 (about 16 and 16) that the logic coding unit 11: “gives the total number of times the sameGelesMshT comparison, the decisive element and adder Numbers of zeros, which is the output of which cyMMstcipa output is connected It is connected to the inputs of the comparison element, the output koifopOro is connected to the output of the logical coding block through the decisive element, the inputs of the adder of the number of zeros and the first inputs of the adder of the number of ones are connected to the per inputs of the logical coding unit

pa of the number of cipjiHueitbj units with the second input and the logical coding block.

Information sources are taken into account when examining

J.O

GOO523

1. Author's certificate of the USSR h 302038, Q 08 C 19/28, 1971.

2. For the UK there is no. 1378753, H Z) 4 P, 1975 (prototype).