SU1644197A1 - Device for calibration signal reception and analysis - Google Patents

Abstract

The invention relates to radio telemetry and can be used in radio telemetry systems for detecting single and group faults of calibration values of telemetry information signals. The purpose of the invention is to increase the reliability of analysis of the presence of calibration signal failures. The device contains in each information channel, L, 4t L, Yal, receiver 1, comparison unit 2, permissible value memory unit 3, counter 4 in the number of faults, block 5 Analysis reliability increases in Since the block for forming analysis intervals (at the end of each analysis interval) provides for resetting (zeroing) the counters of the number of failures of calibration signals. Thus, the proposed device, in comparison with the prototype, eliminates the issuance of false messages about the presence of calibration signal failures. The functionality of the device is expanded due to the fact that the analysis interval generation unit allows you to quickly change the analysis intervals, which provides information calibration signal failures with any time resolution. 1 hp f-ly, 2 ill.

Description

The invention relates to radio telemetry and can be used in radio telemetry systems for detecting single and group faults of calibration values of telemetry information signals.

The aim of the invention is to increase the reliability of analyzing the presence of calibration signal failures.

The accuracy of analyzing the presence of calibration signal failures is increased because the counters for the number of failures before the beginning of the next analysis interval are zeroed out and the device eliminates the possibility of giving false information about the presence of calibration signal failures.

FIG. 1 is a block diagram of the device; in fig. 2 is a block diagram of a signal analysis interval shaping unit.

The device (Fig. 1) contains receivers 11-1z of calibration signals according to the number of calibration levels (in this case, three levels), blocks 2- | -2z comparison, block 3 of the memory of permissible values, counters 4- | -4z of the number of failures, block 5 forming the signal analysis intervals, registration blocks 61-63, consisting, for example, of visual observation blocks 1-7 and block type failure 81-83, addressing block 9, reference pulses input 10, address input 11, information input 12 , input 13 of entry for valid values, synchronization input 14, classification blocks with Oev calibration signals.

Block 5 contains the block 16 for storing the values of the analysis intervals, the counter 17 of clock pulses, the comparator 18, the control panel 19.

The device works as follows.

Since the channels of calibration signals (calibrations) for the levels of 0.50 and 100% are identical (these channels are denoted by the subscripts 1-3), a description of one channel for the level 0% is given. Block 9 selects the channel number through which the zero calibration level is transmitted, and generates a signal allowing the calibration value to pass to the receiver 1i and then to block 2i. In block 21, the current and reference calibration values are compared and the difference between them is found. The resulting difference is compared with the tolerance, the value of which comes from block 3. If the difference is less than the tolerance, then the calibration value is assumed to be reliable, and if greater, then the signal from block 1 goes to counter 4i, which records the number of failures.

The device distinguishes between single and multiple calibration failures. A group failure is considered when the number of invalid values is equal to or greater than

the numbers stored in block 15. The separation of failures by type is carried out by block 8i. Block 5 determines the time intervals during which the calibration signals fail to be analyzed, and, at the time

0, the analysis interval expires a signal to the type of failure classification by block 8i and the number of failures counter 4i has been reset, preparing the latter to count the failures in the next analysis interval. Block 7i

5 allows the operator to monitor the progress of the telemetry information. The device is controlled from a software / time unit (not shown). Block 5 (FIG. 2) functions as follows.

The digital code set either by the operator or by software of a digital computer that determines the value of the analysis interval is entered into block 16 from where it arrives at

5 the first input of the comparator 18. The second digital input of the comparator 18 receives the output digital code of the counter 17; The value of this code corresponds to the number of clock pulses applied to the input of the block from the beginning

0 analysis interval. When the digital codes match, the first and second inputs of the comparator 18 produce a signal at its output, which is fed to the output of the block and the zero input of the counter 17. Thus

5, the duration of the analysis intervals is determined by the specified code and can be promptly changed. The device allows to exclude the issuance of false information about the presence of calibration signal failures.

Claims (2)

1. A device for receiving and analyzing calibration signals, comprising calibration signal receivers, the integrated ° information inputs of which are 5 information input device, addressing unit, the first and second inputs of which are respectively the input of reference pulses and device address input, the output of the addressing unit is connected to the address inputs of the receivers of the calibration signals, the outputs of which are connected to the first inputs of the corresponding comparison blocks, the second inputs of which are combined and connected to the output of the storage unit of valid values, the input of which is the input recording the permissible values, the outputs of the comparison units are connected to the inputs of the corresponding Ratios of the number of errors connected to the first input of the corresponding recording unit, which, in order to increase the reliability, an analysis interval formation block is introduced into it, the input of which is a synchronous input device, the output is connected to the installation inputs of the number of fault counters and the second inputs of the registration blocks . 2. The device according to claim 1, of which is a block forming intervals analysis unit contains a storage unit for analysis interval values, a clock counter, a comparator and a control panel, the output of which is connected via a storage unit the values of the analysis intervals with the first input of the comparator, the second input of which is connected to the output of the clock counter, the first input of which is connected to the output of the comparator and is the output block, the second clock counter input is the block input. nineteen - sixteen