SU1255978A1 - Field telemetric seismic station - Google Patents

Abstract

The invention relates to seismometry and can be used as part of digital telemetry systems for collecting seismic information. The purpose of the invention is to increase the efficiency of the station by reducing the loss of seismic information during recording by increasing the volume of the storage device while reducing the value of the energy it consumes per unit of recorded information. The field telemetry seismic station is equipped with additionally introduced blocks of the storage device of the dynamic type and the formers of the transition commands, recording duration and address. 4 il. (/)

Description

The invention relates to seismometry and can be used as part of digital telemetry systems for collecting seismic information with an automatic standby mode of operation as a field station for the primary recording of seismic information.

The purpose of the invention is to increase the efficiency of the station by reducing the loss of seismic information during recording by increasing the volume of the storage device while reducing the energy consumed per unit of recorded information.

Figure 1 shows the functional diagram of the field telemetry seismic station; figure 2 is a functional diagram of the driver of the transition teams; FIG. 3 is a functional diagram of a recording driver; FIG. 4 is a functional diagram of the address driver.

The functional scheme of the proposed field telemetry seismic station contains a unit I of seismic receivers connected to a unit 2 receiving and transmitting, through series-connected unit 3 amplifiers switch 4, binary amplifier 5, analog-digital converter 6 and in parallel connected units 7-12 memory device, the driver 13 of the transition commands, the start input of which and the start input of the analog-digital converter 6 are connected to the output of the transceiver unit 2, the driver 14 of the recording duration, the output of which It is connected to the regeneration control inputs of the memory blocks 7-12, the earthquake recognition unit 15 connected to the second output of the amplifier block 3, the address generator 16 connected to the synchronous output of the analog-digital converter 6, and the write control inputs of blocks 7-12 the memory device is connected to the output of the imaging unit 13, the second output of the transmission and reception unit 2 is connected to the readout control inputs of the storage units 7-12, the flea output 15 is connected to the control input (} 13, together with the control input of the driver 14 and ({yrmirovatel 16, the first and tor

five

the outputs of the imaging unit 16 are connected respectively with the first and second inputs; Dami shapers 13 and 14, and the second output of the shaper 13 is connected to the reset input of the shaper 16.

The imaging unit 13 can be performed, for example, according to the functional diagram shown in FIG. 2, and contain a comparison circuit 17 connected via serially connected coincidence circuit 18, a single-oscillator 19 to parallel inputs connected to the first 20 of the equalizer 20, and inputs 22 , the installation input of the trigger 23, the OR circuit 24, with the first and second inputs of the comparison circuit I7 connected respectively to the first and second inputs of the imaging unit 13, the second input 0 of the matching circuit 18 is connected to the first control input form l 13, and its third input is connected to the output of the trigger 23, the synchronizing input of which, together with the second input of the encoder 20, is connected to the output of the OR circuit 24, the first input of which is connected to the trigger input of the shaper 13, and the second to the output of the single-oscillator 21 , the output of the counter 0 22 is connected to the third input of the encoder 20, the output of which is connected to the output of the imaging unit 13, and the output of the OR circuit 24 is connected to the output output of the imaging unit 13. 5 The imaging unit 14 can be performed according to the functional diagram shown in (. З, and contain a scheme .25 comparison, the first input of which is connected to the first input 40 of the imaging unit 14, and the output is connected to the installation input to 1 flip-flop 26, the comparison circuit 27, the first input of which is connected to the second input of the imaging device 14, and the output is connected to the installation 45 input to the O-flip-flop 26, a generator 28 connected to the input of the counter 29 and the input of the encoder 30, the output of the counter 29 connected to the second inputs of the circuits 25 and 27 and 50 and the encoder 30, and the output of the trigger 26 is connected to the third input of the encoder 30, the output of which is connected to Shaper output 14.

Shaper 16 addresses can. 55 be executed, for example, according to the functional diagram shown in FIG. 4, and contain a serially connected counter 31, a decoder 32, a trigger 33, a circuit 35 and an inverter

3 matches, counter 36, with synchronous input

the counter 31 connected to the second input of the coincidence circuit 34 is connected to the synchronizer input of the imager 16, connected together: reset of the counters 31 and 35 and the trigger 33 are connected to the reset input of the imager 16 the output of the inverter 36 is connected to the third input of the coincidence circuit 34, and its input is connected to the control input of the driver 16, the output of the counter 31 is connected to the first output of the driver 16, and the output of the counter 35 to the second output of the driver 16.

The station works as follows

In the initial state, signals from the output of block 1 of seismic receivers are fed to the input of block 3 of amplifiers and then to switch 4. The latter alternately connects the outputs of amplifiers 3 to the input of binary amplifier 5, which amplifies incoming signal samples to it to the value determined by the upper analog range. digitizer 6, and measures the binary order of the sample. The normalization to the binary order of the sample, along with the binary order, is fed to the input of the analog-to-digital converter 6, where the binary code of the mantissa is formed, corresponding to the value of the input signal. The results of the analog-digital conversion are fed to the inputs of the storage units 7-12, however, these blocks do not perform any operations. Unit 15 analyzes the signal from the second output of unit 3 amplifiers, and drivers 13, 14, and 16 are inactive with zero signals at the outputs.

Transmission unit 2 is in a state of waiting for the commanding radio over the air. After block 2 receives a radio transmission received by the command: Start work, it generates a signal at the first output, according to which the analog-to-digital converter 6 starts, at the moments when it issues information to the input buses of memory blocks 7–12, the synchronizing output, and the imaging unit 13 outputs to the inputs of the recording control blocks 7-12 memorized 255978

,

ten

15

20

25

thirty

35

device command to start recording the first block of the storage device. By this command, the storage unit 7 goes into the information recording mode and when information arrives at its input from the output of the analog-digital converter 6 writes it into its memory cells, and the driver 16 changes the code of the write address on the sync pulse from the analog-digital converter 6 its first unit output. When the unit code arrives at the first input of the imaging unit 14 for the duration of the recording, the latter periodically sends the regenerate zero cell command to the control inputs of the regeneration of blocks 7-12, according to which unit 7 organizes the storage of the recorded information word. Further, with the appearance of the next information word at the input of block 7, it is similarly written to the memory of block 7, the shaper 16, using a sync pulse from the analog-digital converter 6, changes the code A at the first output by one and the shaper 14 periodically generates the commands Regenerate Zero cell and Regenerate the first cell. According to these commands, unit 7 organizes the storage of two recorded: x words of information.

The process of recording and storing the incoming information is carried out similarly as described for 10 seconds. During this time, the recording code is L of age 40

45

em to the value of K, Next with prs-. by stoning out the next word of information, it is recorded in the memory cells of block 7 with address K + 1, the pulse shaper 16 of the address generator 16 generates the write code value K + 1 at the first output and the unit output of the second output code A. at the second output. Shaper 14

recording duration

values of these codes, gives

using danna

control bus regeneration units 7-12 sequence of commands Regenerate cell 1, and Regenerate cell 2, Regenerate cell K + G, providing block 7 for storage of information recorded in memory cells from first to K + B The size of the information storage area X in the block 7 in this case is defined by the expression X (K + 1). WITH

With the arrival of each next information word, the shaper 16 changes by one the value of the codes on the first and second outputs simultaneously and, therefore, the values of these codes will be related by

AJ - Anz K. (1)

In this case, the driver 14 issues commands to the regen control inputs 12559786

fixes the value of the code A An, at its second output, produced for each clock pulse from the output of the analog-digital converter 6 increment per unit value of the write address АJ at the first output, starting with the value A. Shaper 14 produces sequences

where block 7 organizes the storage of information in the memory area with addresses from An to A. The size of the storage area

X: X AHj, (2)

taking into account the expression (1) is equal to K, which corresponds to the information registered for the last 10 s by the definition of K.

commands Regenerate cell A,,

the storage device of storage devices 7-12, Yu Regenerate the cell A +, Regenerate the cell A., and the storage unit 7 organizes the storage of all incoming information, and after recording the information in i

15 memory locations with address A entry

continues, starting with zero address cells.

In addition, when a signal arrives, the Event shaper 13 is reached. After reaching the code value at 20, it checks to perform the first output, and then 16 conditional address A ,. A. Execution

This condition means that from the moment of the occurrence of a signal, the Event information was recorded in the memory cells of block 7 with addresses from A

topics from Oh to. ,

the output of the former 16 is equal to X (A ..,) + (K) A n -K. Thus, the entire memory area of block 7 is written with the exception of K words.

(3) 30 after receiving the signal Event.

The maximum value of A A A. The following value of this code is set to zero, then it will again increase linearly to A, the Formation of a code on the second L

ws i ° A and i.e. recording volume

 AN + A K.

In this case, for all values

the address of record A shaper 14 issues sequences of commands by which block 7 organizes storage of information in the memory area with cell addresses from An to A and from zero to A. The amount of stored information X is determined by the expression X (A – AN.) + (AJ - ABOUT). Substituting the value dp An from equation (3) is obtained:

X A - (AJ - K) +.

Thus, in this case, the information recorded for the last 10 s is also stored.

With the fulfillment of the conditions A A, the imaging unit 13 sequentially outputs to the control inputs of the recording of the storage devices 7-12 the commands End of recording the first block of the storage device and Start recording the second block of the storage device. These commands block 7. stops recording information and goes

40 into the storage mode of the recorded information, and block 8 starts the process of recording the incoming information, moreover if at this moment the signal. The event was present at the output of block 15, then

45 block 8 provides storage of all recorded information, but if it was not present - only information recorded in the last 10 s is stored.

When the value of the code at the first output of the generator 16 is reached, the value of the code at the second output is zero AH. and their further relationship is described by expression (1). The process of recording and storing information proceeds in a similar way until the signal at the output of block 15 is an event indicating an occurrence of the information on the seismic event (earthquake, industrial explosion).

Upon arrival from the output of block 15, the signal event driver 16

45

15 memory locations with address A entry

I suspect that with the Event yin I got in the memory cells from A

ws i ° A and i.e. recording volume

With the fulfillment of the conditions A A, the imaging unit 13 sequentially issues to the control inputs the recording of the storage devices 7-12 the commands End of recording the first block of the storage device and Start recording the second block of the storage device. These commands block 7. stops recording information and goes

in the storage mode of the recorded information, and block 8 starts the process of recording the incoming information, moreover if at this moment the signal. The event was present at the output of block 15, then

block 8 provides storage of all recorded information, if it is not present, only information registered in the last 10 s is stored.

After receiving, by block 2, receiving and transmitting a command to transmit data over the radio channel, this block organizes reading of information from block 7 of the storage device and transmits it to the radio channel. After reading all the information, block 7 returns to its original state.

The operation of the station is similar to that described, and after filling the entire memory of the storage unit 12, information is recorded in block 7.

Shaper 13 teams transition works as follows.

In the initial state, the counter 22 and the trigger 23 are in the zero state. With the arrival of the signal at the start input. The former 13, through the OR 24 circuit, arrives at the reset output of the imager 13, at the synchronous input of the trigger 23, which is set to state 1, and at the input of the encoder 20, which by this signal and code from the output of the counter 22 forms command code Start recording the first block of the storage device. The comparison circuit 17 analyzes the codes arriving at its inputs from the first and second inputs of the imaging unit 13, and if they match and if there is a signal at the control input of the imaging unit 13, via the matching circuit 18 supplies a signal to the input of the one-vibrator 19, which forms at its output a single a pulse arriving at the inputs of the tamper 20, the one-shot 21, the ticker 22, and the trigger 23.

On the leading edge of this pulse, the trigger 23 at the reset input is set to the zero state and prohibits the operation of the matching circuit 18, the encoder 20 using the code from the output of the counter 22, generates the command code for the end of the recording of the first storage unit and outputs it to to the falling edge of this pulse, the counter 22 changes the code value at its output by one, and the one-shot 21 produces a pulse that, through the OR 24 circuit, arrives at the reset output of the driver 13, to the encoder 20 and the trigger 23. On the leading edge of this In this pulse, the encoder 20, using the code from the output of counter 22, generates the command code Start recording the second block of the storage device and outputs it to the output of the generator 13. On the trailing edge of the pulse at the synchronous input of the trigger 23, this trigger is set to one. Further, the driver 13 when the codes on its first and second inputs coincide and there is a signal at the control input of the anapo

20

25

559788

described as described, it forms, at its outputs, the command code End of recording of the second block of the storage device, the signal at the output of the reset, the command code Start recording the third block of the storage block. In the future, the process is repeated in the same way, and after the formation of the End of Record command of the sixth block of the storage device, the Start Recording command of the first block of the storage device is formed.

; Shaper 14 duration recording works in the following way.

In the initial state, trigger 26 and counter 29 are in the zero state. The generator 28 generates at its output a sequence of pulses that enters the counting input of the counter 29. On the trailing edge of the pulses of this sequence, the counter 29 forms a linearly increasing binary code at its output, and when the maximum code value is reached, the process repeats from zero. This code arrives at the second inputs of the comparison circuits 25 and 27 and the encoder 30. The comparison circuit compares the values of the codes from the first input of the driver 14 and the output of the counter 29, and if they match, it generates at its output a flashing trigger signal 26 condition. The encoder 30 during the presence of the level log.1 from the output of the trigger 26 at its first input on each leading edge of the pulses from the output

40 of the generator 28, depending on the code value at the output of the counter 29, forms one of the following commands: Regenerate cell Azz Regenerate cell A + 1, ....

5 Comparison circuit 27 compares the code values from the second input of the driver 14 and the output of the counter 29, and, if they coincide, generates at its output a reset signal for trigger 26, which translates into the zero state. The level of the log. About the signal from the output of the trigger 26 prohibits the formation of 30 commands by the encoder.

55

Thus, the latter command is formed Regenerate cell AJ.

thirty

further work continues in a similar way.

Shaper 16 address works

follow suit.

According to the signal at the reset input of the driver 16, the counters 31 and 35 and the trigger 33 are set to the zero state. With the arrival of pulses and the synchronizer input of the generator 16, the counter 31 counts the number of incoming pulses. The descrambler 32 decrypts the code value from the output of the counter 31 and, when its value is equal to AND, generates at the output a trigger setting signal 33 into one state. In the absence of a signal at the control input of the driver 16 and the level of the log. M of the signal from the trigger output 33, the coincidence circuit 34 for each pulse at the synchronization input of the imager 16 generates a pulse arriving at the counting input of the counter 35. Thus, the trigger 35 will produce the counting of the impulses arriving at the synchronization input of the imaging sensor 16 in parallel with the counter 31, and at the outputs of these two counters and, therefore, on the first and second outputs of the driver 16 will be equal to K.

When a signal appears at the control input of the shaper 16, the level of the log. From the output of the inverter 36 prohibits the passage of pulses to the input of the counter 35 and further the code at its output remains constant, while the counter 31 continues to count the number of incoming pulses.

With the arrival of a signal at the reset input of the driver 16, its operation begins from the beginning in the manner described.

Claims (1)

Invention Formula - A field telemetry seismic-45 output of a unit of recognition of the earth station, containing a block of seismic receivers connected through a series-connected amplification unit 25597810 a switch, a binary amplifier, an analog-to-digital converter and a dynamic type storage unit with an input of a receiving-5 transmission unit and an earthquake recognition unit connected to the second output of an amplifier unit, in order to increase the efficiency of the station 10 by reducing the loss of seismic information during recording by increasing the volume of the storage device while reducing the consumed energy spent 15 per unit of recorded information into it additional parallel connected storage units of a dynamic type are introduced, a jump command shaper, a write duration shaper, an address shaper, and the write control inputs of the memory blocks are connected to the output of the jump command shaper, whose trigger input 25 and the trigger input of the analog-digital converter are connected to the output of the transceiver unit, the control inputs for the regeneration of the blocks of the storage device are connected to the output of These recordings, the read control inputs of the blocks of the storage device are connected to the second output of the transceiver unit, the synchronization output of the analog-digital converter is connected to the synchronizer input of the address generator, the first and second outputs of which are connected respectively to the first and second inputs of the duration converter records and a jump command shaper, a control shaper input of the address shaper, together with a control input of the jump shaper commands are connected traction, and the reset input of the address driver is connected to the second output of the transition command driver. Editor N. Dankulich Compiled by D. Zargar N Tehred I.Popovkch Corrector I.Musk Order 4820/46 Circulation 728 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5   - - - - - -. „- - - - - - - -. -. Production and printing company, Uzhgorod, yjr. Project, 4