SU858061A1 - Telemetring device - Google Patents

Description

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The invention relates to telemetry and can be used in information measuring systems.

Telemetry devices with code (address) channel division are known, containing serially connected address memory block, switch, analog-digital converter and frame former, the output of a clock connected to clock input of address memory block 1 is connected to another input of which.

A disadvantage of the known telemetry devices (is the lack of flexibility in the distribution of information content of the device between telemetry sensors. In this case, the flexibility of the distribution of information content refers to the possibility of assigning arbitrary frequencies of interrogation of sensors in a wide frequency range. This property is necessary both for optimizing the measurement program on a single control object and to reconfigure the telemetry device when using it on various objects. to destination excess hour the survey decrease in the total number of served sensors and ultimately to degradation of the telecontrol object.

A telemetry device is known comprising a synchronizer (command receiver), the outputs of which are connected to the inputs of the polling control unit (command decoder) and the storage unit connected in series

10 polling programs (software unit), information collection unit (switch), storage unit, group signal generator (control unit) and transmitter, to other inputs of which

15, the outputs of the polling program storage unit are connected.

This device allows implementing several programs for polling information channels (sensors) 2.

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However, the device has a significant loss of informativity of the radio link and storage devices at the expense of the information content of the transfer of addresses of the polled information 25 kangipa (sensors). In such systems, the transfer of address information spends more than 50% of the information content of the system, which ultimately limits the number of programs allowed, and 30 hence the information flexibility. In addition, it is practically impossible to implement three switching stages in the device for transmitting information of high-speed, medium-speed, and slowly varying parameters. The limited number of gradations of the polling rate also leads to an inefficient use of the available bandwidth and, as a result, to a deterioration in the quality of the telecontrol of the object. The purpose of the invention is to increase the information content (throughput) of the device. To achieve this goal, a device containing a synchronizer, the first outputs of which are connected to the inputs of the polling control unit, the nporpeiMM polling storage unit, the output of which is connected to the first input of the information collection unit, the first output of which is connected to the first input of the memory unit. the memory unit is connected to the first information input of the group signal generator, the first output of which is connected to the transmitter input, the block of address registers, trigger, counters, key elements and the first output element are entered Lok control of polling is connected to a first input address register unit, the second input of which is connected to one of the first synchronizer outputs, the output - to the second input data collecting unit, the second output data collecting unit connected with the second informational input of the Sigma group la ,. the third output is with the second input of the memory unit and the first input of the first key element, the output of which is connected to the third information input of the group signal generator, the second output of which is connected to the first input of the first counter; the second output of the control unit of the GPS signal is connected via a trigger to the BTOJMJM input of the first key and directly with the third input of the memory unit and the control input of the group signal generator, the synchronization input of which is connected to the second output of the synchronizer, the third output of the control unit By polling, it is connected to the second output of the synchronizer, the third output of the polling control unit is connected to the second input of the first counter, the first output of which is connected to the first input of the second key element, the second outputs through the I element to the input of the second key element, the outputs of the second counter and the second key element element connected to the input of the storage unit of the polling program. In addition, the group signal generator contains an information register, a control register, a RAM switch, a read block, triggers and key elements, an information register output is connected to a switch input, the outputs of which are connected to the inputs of a RAM block, the first outputs of a RAM block the memory is connected to the inputs of the first trigger, the second outputs are connected to the information inputs of the readout block, the first output of the first trigger is connected to the first input of the first key element The output of which is connected to the control input of the readout unit, the second output of the first trigger is connected to the first input of the second key element, the second inputs of the first and second key elements are connected respectively to the first and second outputs of the control register, the third output of which is connected directly to the first one and through the second trigger with the second inputs of the third key element whose output is connected to the control input of the information register; the information inputs of the driver are connected to the information lmi input information register, a control input - to the input of the control register, a clock input - to the synchronization input of the second flip-flop, the output unit and output the read second key element connected respectively to the first and BTOptD shaper outputs. Figure 1 presents the block diagram of the telemetry device; figure 2 - the same, the former group signal; in fig. The zl structure of the cell location of the polling program storage unit; on fig.Zb - the same telemetry frame in the mode of direct transmission (NP); in fig. the same, in the NP-PLAST mode (reproduction); in fig.Zg - typical sequence of frames. The telemetry device contains (Fig. 1) synchronizer 1, unit 2 for controlling spxgs, block 3 of registers, addresses, first counter 4, second key element 5, block 6 of the polling program, second counter 7, element 8, block 9 collecting information , memory block 10, group signal shaper 11, transmitter 12, trigger 13, first key element 14. Group signal shaper 11 contains (FIG. 2) information register 15, switch 16, RAM blocks 17 and 18, read block 19 , first trigger 20, first and second key elements 21 and 22, Torah trigger 23, the third key element 24, a control register 25. The device operates as follows.

Frame and word (cyclic) synchronization pulses are applied to the synchronizer 1 input. The synchronizer 1, having sixteen outputs, generates, for each of the outputs, a regular pulse sequence received at the corresponding input of the polling control unit 2, which generates pulse sequences for polling the measurement channels and high-performance digital channels, implemented in the Information collection unit 9 ,.

Telemetry information is collected from the measurement channels using the polling program storage unit 6 / executed as a persistent storage device (ROM) and the first counter 4. Counter 4 has thirteen bits (FIG. 3a) forming the full address of the ROM cell. The two high-order bits that are the number of the polling program can denote the ROM number if you use several ROMs — one for each polling program. The tenth and eleventh bits denote the zone number of the ROM and at the same time the type number of the telemetry frame. A total of four frame types are possible, differing in the composition of the channels. The bits from the tenth to the thirteenth are used when forming the control word (CC) of the service part of the frame, which controls the change of the selection and addressing program in the receiving telemetry station. The first to ninth digits denote the number of the ROM cell within the zone. Control of the twelfth and thirteenth bits is performed using command signals. If a single Polling Program is used on an object, then these bits have a zero value and do not affect the operation of the system.

Two control modes are possible for the tenth and eleventh bits. In the first of these, these two bits are the most significant bits of counter 4, with the four zones of the ROM being read alternately as control pulses arrive, and each of the zones forms a frame. In each zone, the addresses of the channels are recorded, which, when read, are sent to the information collection unit 9 via the block 3 of the address registers.

For each individual telemetry object the size of the zone depends on the number of measuring channels in the frame. So, if all the outputs of synchronizer 1 are connected to the meter & 1 channels, the number of them in the frame, and therefore the size of the zone, is 512. Disabling each output channel of the synchronizer 1 for transmitting high-performance digital signals reduces the size of the zone by 32 cells, since the frame contains 32 cycles of the synchronizer 1, the minimum frequency channel polling is equal to 1/4 of the frame frequency, i.e. 25 Hz.

Another mode of controlling the tenth and eleventh bits of counter 4 is to generate them from external command signals. Fixing the eleventh bit in a certain state leads to the fact that only two types of frames are formed, but with a doubled repetition rate. By recording and holding in a constant state, these bits are selected and one of the four possible types of frames is constantly formed. At the same time, the frame repetition rate is increased to 100 Hz.

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Dp transmission of slowly changing parameters (MMP) is provided for the second stage of switching. The second counter 7 and one zone of the polling program storage unit 6 are involved in its formation.

0 (ROM), in which the MMP addresses are written. .1 In order to transfer these parameters in one of the frames of the first-stage polling program, a certain position is allotted (for example, the first position in the first

5 frame). To the address of the ROM corresponding to this position of the frame, element 8 is tuned, which is connected to the bit-wise outputs of the first counter 4. The pulse coincides with the output of the element I. 8 enters the second counter 7, and the contents of this counter (the structure of its bits is the same as that of counter 4) is inserted into the ROM instead of the contents of the counter 4. At the same time

5, the output of counter 4 is blocked by the key element 5. Physically, the ROM cell with the address of counter 4, to which the And 8 element is tuned, is absent. The size of the zone addresses of the channels of the second stage can

0 be arbitrary. If the zone size is 512. Addresses, then the minimum frequency of polling channels in the second stage of switching is 0.05 Hz, if the zone size is 256 addresses, then the minimum /

5 at a frequency equal to 0.1 Hz.

The collection of information from high-speed digital sources is accomplished by feeding pulse sequences from synchronizer 1.

0 directly or through the polling control unit 2 to the unit 3 registers of the address registers. The addresses recorded in these registers j are continuously received in the unit 9 of information collection.

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Information is recorded in memory block 10 by supplying information signals from the output of information collection block 9 and a regular sequence of control pulses.

0 word sync with corresponding to the output of the Oros control unit 2. To set the required recording speed in the polling control block 2, the corresponding synchronizer outputs are used. Wherein

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the REC (write) and HAPR (direct transfer + write) mode is implemented, in which the information recorded in memory block 10 is simultaneously transmitted to the communication channel. To record telemetry information that is not entered into a communication channel, temporary frame positions used for transmitting high-speed digital channel signals are used. At the same time, the control pulses arrive simultaneously to the First counter 4 and to the information collection unit 9 (to a high-speed source), but the input signals of the first and second switching stages of the block 9 are fed only to the input of the memory unit 10, their access to the group I1 the signal is closed, all four words in the frame are set aside for transmitting telemetry information of the first and second stages of switching in the NP mode, and odd ones for transmitting information of high-speed sensors.

It is also necessary to provide an additional recording in the memory block 10 of the flow of telemetry with an intensity of 256 kbit / s from sensors not included in the frame. To implement this mode, all 16 output channels of synchronizer 1 are connected to the OR element (not shown) that generates control pulses for the counter 4 in the polling control block 2, and the odd addresses collect information for the TM mode, and even - for recording. Key element 14 and trigger 13 do not pass even measurements to the input of the group signal generator 11, a section of the two information streams thus collected simultaneously. A simple example shows that the total information content of a telemetry device can be increased to 768 kbit / s.

The TM mode is formed by generating a baseband signal, which is the sum of the telemetry of the first and second switching stages and information of high-speed digital channels. The information part of the frame consists of 512 words of 10 bits each.

The PLAY (playback) mode is realized by generating a signal from information reproduced from memory block 10. In this mode (Fig. 1), the information enters through the register 15 and the switch 16 into one of the memory blocks 17 and 18. The word frequency pulses set the trigger 23 to a position in which the key element 24 is open, which means it is possible to access the register 15 in which the next word from the memory block 10 is recorded. Read pulses carry this word into one of blocks 17 and 18

memory and using the trigger 23 close the key element 24. If by the next moment of reading a new word is not entered into register 15, then the key element 24 is closed and the reading does not occur.

The memory blocks 17 and 18 are alternately filled. After filling one of them, the trigger 20 is set to a position indicating that the RAM unit is ready for reading, while the key element 21 is open and the key element 22 is closed. When the key element 21 is opened, information is read from the memory block through the reading unit 19. The read frequency can be 51200, 25600, 12800 words / s. At the same time, the frame of the operating memory block can be transmitted in 1.2 or 4 frames of transmission.

At a playback speed of 512,000 bps, the frame in PLAY mode is identical to the NP frame. To compensate for slow changes in the playback speed (detonation), the actual playback speed is slightly lower than the speed of information transmitted over the radio link. As a result, at the beginning of the average next frame, the RAM block is not ready for reading and the key element 21 is closed, and the key element 22 is open (the keys are managed by the control register 25, and it is possible only in the intervals between frames). In doing so, the key frame elements 21 and 22 are transmitted to the NP frame, which is reflected in the command word (the typical frame sequence has the form shown in Fig. 3g). The fraction of frames depends on the ratio of the transmission and reproduction rates.

Thus, the invention enhances the informativity of the telemetry device between sensors due to the absence in the transmitted information of the addresses of the polled channels and idle words, as well as by a flexible combination of the direct transfer and playback modes, the availability of interchangeable polling programs and wide limits for changing the channel polling frequency and frame playback, differing in channel composition.

Claims (2)

. The invention The telemetry device containing a synchronizer, the output 1 1 of which is connected to the inputs of the polling control unit, the storage unit of the polling programs, the output of which is connected to the first input of the information collection unit, the first output of which is connected to the first input of the memory block, the output of the memory block the first information input of the truss signal generator, the first output of which is connected to the transmitter input, characterized in that, in order to increase the information content of the device, a regis unit is entered into it addresses, trigger, counters, key element and element I, the first output of the polling control block is connected to the first input of the block of address registers, the second time of which is connected to one of the synchronizer outputs, the output to the second input of the information collection block, the second output of the collecting block information is connected to the second information input of the group signal generator, the third output is connected to the second input of the memory unit and the first input of the first key element, the output of which is connected to the third information input of the group generator The second signal, the second output of which is connected to the first input of the first counter, the second output of the polling control unit, is connected via a trigger to the second input of the first key and directly to the third input of the memory unit and to the control output of the group signal generator, the synchronizing input of which is connected to the second output synchronizer, the third output of the polling control unit is connected to the second output of the synchronizer, the third output of the polling control unit is connected to the second input of the first counter, the first output of which is connected the first input of the second key member Vågå, BToiMje outputs via an AND - vtorog the second input key element, the outputs of the second counter and second key elements that are connected to the input of a survey program storage unit. 2. The device according to claim 1, characterized in that the driver of the rf signal contains an information register, a control register, a RAM switch; readout unit, triggers and key elements, information register output connected to switch input, outputs of which are connected to inputs of RAM blocks, first outputs of RAM blocks are connected to inputs of the first trigger, second outputs of HH to information inputs of the read block, first output of the first the trigger is connected to the first input of the first key element, the output of which is connected to the control input of the readout unit; the second output of the first trigger is connected to the first input of the second key el The second inputs of the first and second key elements are connected respectively to the first and second outputs of the control register, the third output of which is connected directly to the first 1 and through the second trigger to the second inputs of the third key element, the output of which is connected to the control input of the information register, information inputs the former is connected to the information inputs of the information registrar, the control input - with the input of the control register, the synchronization input - with the synchronization input of the second th flip-flop, the output unit and output the read second key element connected respectively to the first and vtorm shaper outputs. Sources of information taken into account in the examination 1. F. Barsukov. and Rusanov Yu.B. Elements and devices of radio telemetry systems. M., Energie, 1973, p.25. 2. Telemetry reference. Ed. Grunberg, E.L. M., Mechanical Engineering, 1971, p. 541 (prototype). H 3 ff U Phi1.2