SU1203566A1 - Device for transmission of telemetering information - Google Patents

Description

The first output of which is connected to the first inputs of the first and second elements And, the second output is connected to the first input of the third element

, And, the output of the element is NOT connected to the second input of the first element AND, the outputs of the first and third elements AND are connected respectively to the first and second inputs of the OR element, the input of the element is NOT combined with

The second inputs of the second and third elements of AND are the first ones. The invention relates to information measuring equipment and can be used in systems for collecting, converting and transmitting information, in particular, in telemetry systems.

The aim of the invention is to increase the information content of the device. The drawing shows a block diagram of the proposed device.

Device For transmitting telemetry information contains switch Ij control unit 2, address block 3 (counter), pulse generator 4, trigger 5, analog-digital converter 6, registers 7 and 8, memory block 9, comparison unit 10, unit 1 of elements And, the driver 12 output messages, the buffer memory block 53 and the output block 14,

The control unit 2 comprises a pulse generator 15, a pulse distributor 16, AND elements 17, 18, a HE element 19, an AND element 20 and an OR element 21.

The device works in the following way.

The current information of the telemetric channels is fed to the information inputs of the switch 1. From the fifth output of the control unit 2, a sequence of pulses arrives at the input of the block 3 of the addresses of the telemetric channels. The signal from the first output (zero bit) of the block of 3 addresses with the switching period of the telemetric channels.

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the control unit house, the pulse generator input is the second input of the control unit, the third output of the pulse distributor, the output of the element OR, the output of the second element AND, the output of the third element. And, the fourth and second outputs of the pulse distributor are the first, second, third, fourth, fifth, and sixth outputs of the control unit, respectively.

the first input of the driver 4 pulses. Shaper 4 generates the first pulse from; 1 zero-bit pulse sequence, which

through trigger 5 enters output block 14. Thus, when polling all telemetry channels from the output of trigger 5, only one pulse is organized,

which is a marker of the current telemetry time. From the third outputs of unit 3 with the switching period, the addresses of the telemetric channels are fed to the control input: switch input G and to the information input of register 8 address.

In accordance with the addresses of the telemetry channels, switch 1 commutes successively corresponding telemetry channels to the input of the analog-digital converter 6; Converter 6 converts the analog signals of telemetric channels into parallel digital

the code and feeds it to the input of the information register 7, which stores it before the arrival of the signal from the second output of the control unit 2. The address code of the telemetry channel from the output of the address register 8 goes to the inputs of the memory block 9 of the current values of the block 1 of the I elements. On the other; the right input of the memory block 9 from the first output of the control block 2

receive a signal that

according to the code of the address of the telemetry channel arriving at the address input of the memory block 9, the previous value of the information on the telemetry channel and the value of the acceptable limit of its change from the outputs of the memory block 9 to the second inputs of the comparison unit 10 are calculated. The first inputs of the comparison unit 10, the I unit 11 and the information inputs of the memory unit 9 receive current information on this telemetric channel from the output of the information register 7. The current and previous values of the information in comparison block 10 are compared according to the following conditions.

.i- np; UE; - | x, -x „p1 | E;

(About (2)

where is the current value of the information —gr of the telemetric channelJ

X „p. - the previous essential value of the information of the i-th telemetric channel, E, is the value of the allowable limit of change of the i-th telemetric channel. If condition (1) is fulfilled, the information is considered irrelevant and the comparison unit 10 does not output the signal to the input of the control unit 2, which, in this case, generates an output of the information register 7 and the address register 8 from the second output. With the arrival of the next telemetry channel address, the device switches to the next telemetry channel. Thus, irrelevant information is not transmitted to the output of the device.

If condition (2) is fulfilled, the information is considered essential and the comparison unit 10 outputs a signal to the input of control unit 2, which receives a signal from the third output of block 2 to the input of memory block 9 and to the third input of AND block 11, allowing recording the current value of information from the information on the corresponding address of the telemetry channel from the register 8 addresses to memory block 9 and allowing the output of the current information from register 7 and the telemetry address to the shaper 12 output unit 1I channels from the register 8. In the former 12, an output message consisting of the information and address parts is formed.

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The signal from the fourth output of blog 2 controls formed in the driver 12, the output message is recorded in the buffer block 13 5 of the memory, and then through the output block 14 is transmitted to the device outputs. At the same time, the signal n is output from the second output of the control block 2, and resetting the registers 7 and 8. From the sixth

The 10 outputs of the control block 2 are fed to the input to the zero setting of the trigger 5, having completed the formation of the current time marker, which is transmitted along with the information

15 to the output of the device. Similarly

there is a survey of the remaining telemetric channels. Upon completion of the survey of the last telemetric channel, i.e. when the dual counter of block 3 is filled from the second output of this block to the second input of the imaging unit 4 pulses, a signal is received that prepares the imaging unit 4 for the next pulse.

The control unit 2 is designed to control the operation modes of the device and operates as follows. I

The generator 15 supplies to the input of the distributor 16 pulses a stable sequence of pulses. From the fourth output of the distributor, 16 pulses, a sequence of pulses goes to the fifth output of the unit

35 2 controls From the third output of the distributor 16 pulses, a sequence of pulses is fed to the first output of control unit 2. From the first exit sequence

40 pulses are fed to the first inputs of the AND elements 17 and 18. If, from the comparison unit 10, the signal is not fed to the input of the control unit 2, i.e. on the element NOT 19 and the elements And 18 and 20,.

45, then the signal from the output of the element HE 19, arriving at the second input of the element | that 17 allows passage through

It signals from the first output of the distributor of 16 pulses to the first 50 input of the element 21, from the output of which the signal goes to the second output of the control unit 2. If from the comparison unit 10 the signal is fed to the input of the control unit 2, then it permits, 55 s, the passage of the signal from the first

the output of the distributor 16 through the element 18 on the third output of the control unit 2, the signal from the second output of the distributor. 16 through element 20 to the fourth output of control unit 2 and to the second input of the OR element 21, from the output of which the signal goes to the second output of control unit 2. The signal from the second output of the distributor 16 is fed to the sixth output of the control unit 2.

 In order to evaluate the information content of the proposed device and the known, let us specify the parameters of the output messages.

For a known device: the information part is eight bits; the address part is eight bits, the current time is eight bits, the output from four times communication is twenty rows.

For the proposed device: the information part is eight bits, the address part is eight bits; - the current time marker is one bit; output, message - seventeen bits.

Thus, reducing the overhead information by introducing the current time marker and using it together with the address of the telemetry channels as

the current time value allows to increase the information content of the proposed device

Claims (2)

(54 *) 1. A DEVICE FOR TRANSMISSION OF TELEMETRIC INFORMATION, comprising a switch, the information inputs of which are information inputs of the device, a first register, the outputs of which are connected to the corresponding information inputs of the first memory block and the first inputs of the comparison unit and the block of elements AND, the outputs of the block of elements AND connected through the shaper messages with the corresponding information inputs of the second memory block, the outputs of the second memory block are connected with the corresponding first inputs of the output block the outputs of which are the outputs of the device, the second register, the outputs of which are connected to the corresponding address inputs of the first memory block and the second inputs of the block of elements AND, the outputs of the first memory block are connected to the corresponding second inputs of the comparison block, the output of which is connected to the first input of the control unit, the second input the control unit is the control input of the device, the first output of the control unit is connected to the read input of the first memory unit, the second output is connected to the zeroing inputs of the first and second of the registers, the third output is connected to the recording input of the first memory block and the third input of the block of elements AND, the fourth output is connected to the control input of the second memory block, characterized in that, in order to increase the information content of the device, an analog-to-digital converter is introduced into it, address counter, pulse shaper and trigger, the fifth output of the control unit is connected q to the input of the address counter, the first and second outputs of which are connected respectively to the first and second inputs of the pulse shaper, the output of which the sixth output of the control unit is connected respectively to the input of the unit at 1 and the input of the unit to 0 of the trigger, the output of the trigger is connected to the second input of the output unit, the third outputs of the address counter are connected to the corresponding information inputs of the second register and the control inputs of the switch, the outputs of the switch are connected via analog-digital a converter with corresponding information inputs of the first register. 2. The device according to π. 1, characterized in that the control unit comprises a pulse generator, a pulse distributor, AND elements, an OR element and a NOT element, the output of the pulse generator is connected to the input of the pulse distributor, SU ,,, 1203566 whose first output is connected to the first inputs of the first and second elements And, the second output is connected to the first input of the third element And, the output of the element is NOT connected to the second input of the first element And, the outputs of the first and third elements And are connected respectively to the first and the second inputs of the OR element, the input of the element is NOT combined with the second inputs of the second and third elements AND and is the first input of the control unit, the input of the pulse generator is the second input of the control unit, the third output of the pulse distributor, the output of the OR element, the output of the second AND element, the output of the third element. And, the fourth and second outputs of the pulse distributor are respectively the first, second, third ', fourth, fifth and sixth outputs of the control unit.