SU849513A1 - Device for programme interrogation of telemetering channels - Google Patents

Description

(54) PROGRAM INTERVIEW DEVICE The invention relates to a radio telemetry device and may be used in a radio information transmission system with temporary channel compaction. A device for polling telemetry channels is known, containing n circuits from successively connected blocks, a buffer memory, a request generator and a reversible counter (where n is the number of polled information sources), as well as serially connected clock generator, polling program generator, addressing unit and channel switch , the first control input of which is connected to the second output of the polling program generator, the third output of which is connected to the input of the reset pulse maker, The clock generator impulse is connected to the second control input of the channel switch, whose information inputs are connected to the telemetry channels of the corresponding buffer memory blocks, and the outputs of the reset pulse generator are connected to the second inputs of the reversible counters GO. However, the known device has a large loss of information during the survey. The purpose of the invention is to reduce the loss of information in the survey. For this purpose, in the program interrogator of telemetric channels, there are n circuits from the series-connected buffer memory block, the query generator and the reversible counter, (where n is the number of polled information sources), as well as the serially connected clock generator, the survey generator, the addressing unit and a channel switch, the first control input of which is connected to the second form output} of the interrogator of the interrogation programs, the third output of which is connected to the input of the dump generator sa.

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the clock pulse generator code is connected to the second control input of the channel switch, the information inputs of which are connected to the second outputs of the corresponding buffer memory blocks, and the outputs of the reset pulse generator are connected to the second inputs of reversible counters in each of the n circuits, serially connected threshold fixing unit and analyzer are entered the state of the buffer memory and the block of dynamic redistribution of priorities, the inputs of which are connected to the outputs of the corresponding analog channels congestion state buffering memory, the second inputs of which are connected to first outputs sootvetstvuyupa € x reverse: ivnyh counters, the second outputs are connected to the inputs of respective threshold fixing blocks, wherein the interworking unit outputs dynamic priorities are connected to additional inputs forgdarovatel survey programs.

The drawing shows the electrical log of the proposed device.

The device for polling telemetry E1 channel contains n circuits from the {1-1 ... 1-n) series-connected buffer memory, shaper 2 (2-1 ... 2 - n), reversible counter 3 (3-1. .. 3-p), block 4 (4-1 ... -4p) of fixing the threshold and analyzer 5 (5-1 ...) constitute no buffer memory, and also contains the shaper 6 reset pulses, glint 7 of dynamic redistribution priorities - block 8 addressing, shaper 9 polling programs, switch 10 channels and generator 1 clock pulses. Signals from information sources come to the inputs of blocks 1 of the buffer memory. The output of the switch 10 channels connected to the information highway.

The device of program interrogation of telemetric channels works in the following way.

Message flows from information sources are received in blocks 1-1 ... 1-n to form a queue. When a buffer memory, for example 1-1, arrives at the output of the query generator 2-1, a pulse is generated, evidence of a formation of a packet of messages in the buffer memory block, ready for transmission to the information highway.

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From the output of the imaging unit 2-1 request impulses are received on the first code of the reversible counter 3-1. Each of the reversible counters 3 continuously informs the block 4 of fixing the threshold and the analyzers 5 of the buffer memory state of the degree of filling of the buffer memory blocks.

If the program of polling information sources installed at previous device operation cycles corresponds to the intensity of messages at the output of information sources, the length of the Message queue in the I buffer memory blocks is less than the threshold value specified by the 4 latching threshold blocks

In the event of an increase in the intensity of the message flow at the output of one of the information sources, the length of the message queue in the corresponding block 1 of the buffer memory increases due to the inconsistency of the message output rate, which is specified by the polling program and the message arrival rate. As soon as the queue length reaches the threshold value, the threshold latching unit 4 generates a signal for redesigning the polling program. The signal enters through the buffer memory state analyzer 5 in block 7 I of the dynamic redistribution of priorities. To fix this signal, the block 7 of the dynamic redistribution of priorities simultaneously receives from other analyzers 5 information about the degree of filling of blocks 1 of the buffer memory relative to the threshold levels. In accordance with the distribution of states obtained, the queue length in blocks

1 buffer memory, block 7 of the dynamic redistribution of priorities assigns new priority numbers.

The survey program of information sources formed by the shaper

Claims (1)

9 interrogation programs based on the order priority numbers of information sources arrive at the input of the switch of 10 channels and determine its mode of operation. At the same time, the program of polling information sources from the generator 9 of the polling programs is sent to the generator -6 reset pulses, where signals about the output of messages from the 1 buffer memory blocks are generated. These signals in the form of pulses arrive at the second input of the reversible counters 3 and reversely switch the reversible counters. The frame length of the interrogation of information sources is set by the signals of the clock pulse generator 11, which is fed to the second control input of the switch 10 channels and to the driver 9 of the interrogation programs. The proposed device virtually eliminates the probability of loss of messages due to overflow of the buffer memory blocks and increases the efficiency of the use of the data line throughput. The efficiency of the device is that the information flows have a piecewise stationary character, with the most prices for information being transmitted at the time of the flow rate of the intensity of information flow from one stationarity level to another. Thus, in the proposed device reduced losses during the survey. Claims. A device for polling telemetry channels, containing n circuits from a series-connected buffer memory block, a query generator and a reversible counter (where n is the number of polled information sources), as well as a sequencer from the clock generator, a polling program generator, an addressing block and a channel switch, the first control input of which is connected to the second output of the polling program generator, the third output of which is connected to the input of the reset pulse generator, and in The output of the clock pulse generator is connected to the second control input of the channel switch, the information inputs of which are connected to the second outputs of the corresponding buffer memory blocks, and the outputs of the reset pulse generator are connected to the second inputs of the reversible counters, distinguishing it with the aim of reducing information loss During the survey, each of the p circuits is inputted by a sequence connected by a block for fixing the threshold and an analyzer of the state of the buffer (a ferrite, as well as a block. danamic redistribution of pribrites, the inputs of which are connected to the outputs of corresponding sound state memory analyzers, the second inputs of which are connected to the first outputs of the corresponding reversible meters, the second outputs of which are connected to the inputs of the corresponding threshold fixation blocks survey programs. Sources of information taken into account in the examination 1. Bosiy ND Multichannel information transfer systems. Kiev, Ed. Technique, 1971, p. 279-281.