SU1536337A2 - Apparatus for recording lightnings - Google Patents

Abstract

The invention relates to meteorological instruments and is intended to obtain information on the temporal characteristics of thunderstorm activities. The aim of the invention is the expansion of information capabilities. By introducing the fifth, sixth, and seventh keys, the fourth counter, and the block of summation of time intervals, additional definition and recording of the duration of the lightnings and their individual components are provided. 2 Il.

Description

The invention relates to meteorological instruments and is intended to obtain information about thunderstorm activity.

The aim of the invention is to expand the information capabilities of the device by determining the duration of the lightning and their individual components.

FIG. 1 shows a block diagram of the device; in fig. 2 - timing diagrams, explaining the principle of its work.

The device for recording lightning contains serially connected antenna 1, filter 2, threshold device 3, first counter 4, first key 5, and recorder 6 of the number of components. The first and second inputs of the first trigger 7 are connected to the output of the threshold device 3, as well as the control input of the fifth key 8, combined with

the control input of the sixth key 9. The output of the first trigger 7 is connected to the control input of the second key 10 with the first input of the inhibitor circuit It, with the first input of the matching circuit 2, with the installation inputs of the initial state of the second 13, third Ik and fourth 15 counters, and also with the first input of the second trigger 16. The information input of the second key 10 is connected to the first output of the generator 17 clock pulses. The output of the second key 10 is connected to the counting input of the second counter 13. The output of the latter is connected to the information inputs of the third 18 and fourth 19 keys. The outputs of the keys 18 and 19 are connected to the inputs of the recorder 20 time intervals between components and the recorder 21 time intervals between lightning, respectively. Control inputs of keys 18 and 19

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S are correspondingly with the outputs of the prohibition circuit 11 and the coincidence circuit 12, the second inputs of which are connected to the output of the rigger 16, the second input of which is connected to the output of the counter 14, the even input of which is connected to the output of the key 10. The installation input is the initial state of the counter 4 and the control input key 5 is connected to. the output of the counter 14, the Second output of the clock 17 pulse generator is connected to the information input of the fifth key 8, the output of which is connected to the counting input of the fourth counter 15, the output of the latter connected to the information input of the key 9. The output of the key 9 is connected to the input of the recorder 22 of the duration of the components and to the first input of the summation unit 23, the second input of which is connected to the output of the third key 18. At the same time, the installation input to the initial state of the summing unit 23 is connected to the output of the matching circuit 12, and its output to the information seventh entry key 24, a control input coupled to an output of the third counter 14. Exit key 24 is connected to input 25 recorder duration lightning. The device works as follows.

The electromagnetic signal generated by the lightning is perceived by the antenna 1 and through filter 2 (diagram 26 in Fig. 2} enters the input of threshold device 3, which forms square impulses from signals corresponding to the individual components of lightning discharges (diagram 27 in figure 2). the pulses are fed to the input of the first counter 4, to the control inputs of the keys 8 and 9, and to both inputs of the trigger 7. The counter 4 is made according to the scheme with automatic setting to the zero state when the power is turned on, Part of the trigger 7 includes a forming device o, which ensures that the trigger triggers to the zero state by the leading edge of pulses from the output of the threshold device 3, and to one state by the falling edge of the same pulses. Thus, at the output of trigger 7, pulses are formed whose duration is equal to the time interval between the individual components of the lightning bolts ( diagram 28 in Fig. 2). The pulses from the output of the trigger 7 are fed to the control input

0

five

0

five

the second key 10, the first input of the prohibition circuit 11, the first input of the coincidence circuit 12, to the inputs of resetting the counters 13, 14 and 15, as well as the first input of the second trigger 16. The leading edge of these pulses are the counters 13 and 14, as well as trigger 16 is reset to zero. In this case, the coincidence circuit 12 is closed, and the interdiction circuit 11 is open. These schemes include forming devices that control the keys 18 and 19 by the falling edge of the pulse from the output of the trigger 7. At the first output of the clock pulse generator 17, pulses are generated with a predetermined follow-up period. This period was chosen to be 100 µs. The key 10 opens for the duration of the pulse at the output of the trigger 7 and transmits the pulses from the output of the generator 17 to the inputs of the counters 13 and 14 (diagram 29 in Fig. 2). Counter 13 counts these pulses and outputs an interval code between the components of the lightning to the inputs of keys 18 and 19. This code is registered by one of the recorders 20 or 21 depending on the state of the trigger 16. If the measured interval separates the pulses corresponding to the components of the same bit yes, then its value does not exceed 100 ms, as a rule, and it is recorded by the recorder 20. 5 If the value of this interval exceeds 100 ms, then it separates the pulses corresponding to the components of different bits and is recorded by the recorder 21.

The time interval between pulses is monitored using a counter 14, at the output of which a signal appears (Figure 30 in FIG. 2) in the case when the number of pulses at its output corresponds to a duration of 100 ms. For the pulse period from the first output of the generator 17, equal to 100 microseconds, the number of these pulses is 1000. With a time interval between pulses of more than 100 ms, the signal from the output of counter 14 translates trigger 16 into a single state (Figure 31 in Fig. 2). At this time, the coincidence circuit 12 opens (diagram 32 in FIG. 2), and the interdiction circuit 11 closes. In addition, the pulse from the output of the counter 14 with its leading edge opens the key 5, and

0

0

five

0

five

15

20

One of the number of components from the output of the counter k is recorded by the recorder 6, the falling edge of this pulse, the counter C, is reset (zeroed). The back edge of the pulse from the output of the trigger 7 opens the key 19, and the code of the time interval between lightning (since this interval is more than 100 ms) is recorded by the recorder 21. With the time interval between pulses at the output of the threshold device 3 less than 100 ms, these pulses correspond to the components of the same same lightning. In this case, the signal at the output of the counter 1 does not appear, the trigger 16 is in the zero state, the coincidence circuit 12 is closed, and the inhibitor circuit P is open. The back edge of the pulse from the output of the trigger 7 opens the key 18 (diagram 33 in Fig. 2), and the code of the time interval between the components (since it is less than 100 ms) is recorded by the recorder 20. With the output of the 25th stroke of the threshold device 3, a pulse equal to the duration of the individual component enters the control inputs of the keys 8 and 9. The key 8 opens for the duration of the existence of this pulse and passes the clock pulses from the second output of the generator 17 to the input of the counter 15 (diagram 3 in Fig. 2). The period of these pulses was chosen equal to 1 x. The counter 15 is reset to initial state automatically when the power is turned on, as well as by the signal generated by the shaping device included in the counter 15, on the falling edge of the pulse from the trigger output 7. Counter 15 counts the clock pulses and outputs the component duration code to the key input 9. B the composition of the key .9 enters the forming device, ensuring its short-term opening by the falling edge of the pulse from the output of the threshold device 3. Through the public key 9, the code of the component duration is issued to course recorder 22 the duration of components and registers them. At the same time, the duration code of the component arrives at the ndin from the inputs of summation unit 23. The code for the intervals between the components from the output of the switch 18 is fed to its other input. In the summing block 23, the duration codes are sequentially added.

ten

35

40

50

55

thirty

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ponents and codes of intervals between components. As a result, a lightning duration code is output from the output of the addition unit 23 to the key input .2k.

The key 24 is opened with a pulse from the output of the counter I, generated at the end of the lightning. The code for the duration of the lightning enters the input.

the recorder 25 and is registered with it. The installation of the summation unit 23 to the initial state is performed automatically, automatically when the power is turned on, as well as by a signal 32 from the output of the coincidence circuit 12.

The device makes it possible to significantly expand the information capabilities, allowing one to obtain, along with the number of components in the discharge of lightning, the time intervals between components and the time intervals between lightning duration of lightning and their individual components.

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the invention

The device for registration of lightning on the author. St. № 1 39515, about t l and

In order to expand the information capabilities of the device by determining the duration of the lightning and its individual components, the summation unit, the fifth, sixth and seventh keys, the fourth counter, the lightning duration recorder and the duration recorder of components, in addition, the countable the input of the fourth counter is connected to the output of the fifth key, the information input of which is connected to one of the outputs of the clock pulse generator, and the control input is combined with the control input of the sixth The key is connected to the output of the threshold device, the information input of the sixth key is connected to the output of the fourth counter, the setup input of which is connected to the output of the first trigger, the output of the sixth key is connected to the input of the duration recorder of the components and the second input connected to the output of the third key, the output of the summation unit is connected to the information input of the seventh key, the control input of which is sub-key to the output of the third counter,

and the output - to the recorder of the duration of the lightning, the installation input unit sumJ.

return to the initial state is connected to the output of the coincidence circuit.

fig 2

Editor L. Veselovska

Compiled by S. Yudin

Tehred M. Didyk Proof-reader V. Hirn

Order 107

Circulation

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., K / S

Subscription

Claims (3)

Claim Device for registering lightning by ed. St. (Г 1439515, about l and for the lifetime of this pulse and passes clock pulses from the second output of the generator 17 to the input of the counter 15 (diagram 34 in FIG. 2). The repetition period of these pulses was chosen equal to 1 μs. The counter 15 is set to its initial state automatically when the power is turned on, as well as by the signal generated by the forming device, which is part of the counter 15, on the trailing edge of the pulse from the output of the trigger 7. Counter 15 counts the clock pulses and gives the component duration code to the key input 9 . The key .9 includes a forming device that provides its short-term opening by the trailing edge of the pulse from the output of the threshold device 3. Through the public key 9, the component duration code is issued to the input of the registrar ’22 of the component duration and is registered by it. At the same time, the component duration code is supplied to one of the inputs of the summing unit 23. At its other input, the code of the intervals between the components is output from the output of the key 18. In block 23, the summation is sequential; summation of the duration codes is due to the fact that, in order to expand the information capabilities of the device by determining the duration of lightning and their individual components, an addition unit is added to it, the fifth, sixth and seventh keys, a fourth counter, a lightning duration recorder and a component duration recorder, when This counting input 4Q of the fourth counter is connected to the output of the fifth key, the information input of which is connected to one of the outputs of the clock generator, and the control input is it is one with the control input of the sixth key and connected to the output of the threshold device, the information input of the sixth key is connected to the output of the fourth counter, the initial input 50 of which is connected to the output of the first trigger, the output of the sixth key is connected to the input of the recorder of the duration of the components and to the first input the summing unit, the second input of which is connected to the output of the third key, cha, the output of the summing unit is connected to the information input of the seventh key, the control input of which is connected to the output of the tego counter, and the output - to the registrar dlitelnoe- ming original state soediti lightning unit set input sum nen yield coincidence circuit. I I I zs * share