SU1200319A1 - Adaptive transmitter of telemetric information - Google Patents

Description

The invention relates to remote control and can be used in the equipment for the exchange of command and signal information of automated control systems.

The purpose of the invention is to increase the information content and speed of the device by reducing the service part of messages - addresses of groups of information. '<

FIG. 1 shows the scheme of the adaptive telemetry transmitter information; in fig. 2 nd 3 -. codogram structure.

The device contains a distributor 1, switch 2, key 3, memory block 4, counter 5, comparison unit 6, key 7, service part register 8, counter 9, keys 10 and 11, code word register 12, key 13,

• adder 14, setpoint switch 15, trigger 16, driver 17 commands.

The device has two modes of information transfer: the transfer of individual groups of information with their individual address parts and the transfer of several groups of information with a common service part indicating the numbers of the transmitted groups (the structure of codograms is shown in Figures 2 and 3).

In both cases, only groups that have changes in information are transmitted. Calculations show that with a small number of groups that have changes, the first transfer mode is at the same time preferable, and with a large number, the second mode is preferable. Due to this, reduce the transmitted official information.,

The criteria for selecting the first transmission mode is the ratio

K-1 _and N + 1 ..

"N + 1 '* (1)

where N is the number of groups of objects (information);

 K - the number of groups that have changes.

If condition (1) is not met, the second transmission mode is applied.

The implementation of the transmission mode selection is carried out using an adder 14 having 1ο _{β β} Ν digits, and the value K, at which the mode switching occurs, is found from expression (1). At the first entrances summa ·

Section 14 is supplied with the current value of the number of groups that have changes, and the second inputs - the setting Ν-Κ + 1. (optimal), which in principle can

5 be regulated. The output of the adder is the transfer output to the high order.

The device works as follows.

10 way.

The initial state; all counters 5.9 and trigger 16 are in state "0", all N bits of register 8 are in state "1", there are no control signals from shaper 17. Signals from the first output of distributor 1 control the operation of the switch that connects all N groups of sources in series data on

^{20 is} his way out. Counter 5 counts the number of "0" in the group, at the end of the survey which is reset to zero. Comparison unit 6 compares the contents of counters 5 with the contents read from memory block 4. Counter 9 counts the number of groups of information in which there are changes in data. parts in the position code are entered numbers

³⁰ groups in which there are changes in the data, for example, 01 10 ... 0, i.e. in the first, fourth, ..., Νth groups there are no changes, and 2 and 3 groups have changes. This continues to the end of the first cycle * of the operation of the distributor. During this cycle, the trigger 16 will be in the state "0" or "G, depending on the value of the contents of the counter 9. Suppose

40 it is in the state “0”, then the key 11 is opened by a signal from the second output of the driver 17 commands. The contents of the service part 8 register determine which source groups the distributor needs to interrogate in the second cycle. In this cycle, the distributor 1 operates at the rate of information output to the communication channel. From the distributor 1, the address of the information group falls into the register 12 of the code word, and the contents of the group through the key 13 are recorded in the information * * part of the register 12. At the same time, the counter 5 operates as before, and

55 the contents of the counter are overwritten using the key Sv memory block 4.

If the trigger 16 is in the ”1" state, then the key 1.0 is opened, and

W 1200319 4

, register 12 gets service, part of the register 8. Next, the process is repeated as described above.

At the end of the second cycle of operation of the distributor 1 is set

counters 5.9, register 8 and tris ^ ra 16 to their original, state.

The signal "0. ';. 0" from the output of counter 9 notifies other consumers of the channel

h connection that he is "free."

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Claims (1)

ADAPTIVE TELEMETRIC INFORMATION TRANSMITTER containing a distributor, the first output of which is connected to the control inputs of the memory unit and the switch, the output of which is connected to the information input of the first key, the input of the comparison unit and information inputs of the first counter, the output of which is connected to the first input of the second key, the output of which is connected to * the information input of the memory block, the output of which is connected to the second input of the comparator, the output of which is connected to the control input of the third key, the output of which a register connected to the input of the code performance, the outputs of the first and fourth keys respectively connected to first and second inputs of the code word register, whose output is connected to the input of the commands, which first output is connected to the control inputs of the first and the second key, the fifth key, the output of the command driver is the first output of the transmitter, the information inputs of the switch are the inputs of the transmitter, distinguished by the fact that, in order to increase the information content and performance of the device by reducing the service part of messages - addresses of information groups, he entered the second counter, adder, "setpoint switch, trigger, the output of the comparator is connected through the second counter to the first input of the adder, the output of which is connected to the trigger input, the first and second outputs of which first connected to the first inputs of the fourth and fifth keys, respectively, to the second inputs of which the second output of the command shaper is connected, the output register of the service part of the code is connected to the third input of the fourth key and the first, distributor input, the first output of which is connected to the third input of the fifth key connected to the Third input of the code word register, the first output of the command driver is connected to the second input of the distributor, the second output of which is connected to the information input of the third key, the output ne eklyuchatelya setpoint is connected to the second input of the adder, the second counter output is the second output of the switch. 1 1200319 2