SU1525648A2 - Apparatus for recording lighting discharges - Google Patents

Abstract

This invention relates to meteorological instruments. The aim of the invention is to extend the functionality by splitting the bits into types. The sign of the change in the intensity of the electrostatic field before and after the discharge of the lightning, as well as the removal of the discharge, is analyzed. The number of negative ground bits at a distance of up to 10 km is recorded separately. negative ground discharges over a distance of more than 10 km. positive and combined ground discharges at a distance of up to 10 km and positive and combined discharges at a distance of more than 10 km. 1 il.

Description

The invention relates to meteorological instruments designed to obtain thunderstorm characteristics.

The purpose of the invention is to expand the functionality of the device by dividing the ground bits into negative and positive ground, as well as combined.

The drawing shows a structural diagram of the proposed device.

The device contains a serially connected antenna 1 and a matching device 2, the output of which is connected to the inputs of the first 3, second 4 and third 5 filters, as well as to the input of the first one-shot 6, the output of each filter 3-5 is connected to the input of the first 7, second 8 and the third 9 threshold devices whose outputs are connected to

the corresponding inputs of the circuit 10 match. The output of the coincidence circuit 10 is connected to the input of the pulse expander 11, the output of which is connected to the inputs of the recorder 12 and the driver of the 13 pulses (PI). The outputs of the first 3 and second 4 filters are connected to the information inputs of the first 14 and second 15 peak detectors, respectively, the control inputs of which are connected to one of the outputs of the single vibrator 6. The outputs of the peak detectors 14 and 15, as well as one of the outputs of the single vibrator 6 are connected with the corresponding inputs of the range calculation unit 16 (DU), the output of which is connected to the information input of an amplitude-pulse modulator (AIM) 17. The control input of the modulator 17 is connected to the output of the imaging unit 13 pulses, and the output to the input

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multi channel amplitude analyzer 1Y. To the output of the sensor 19 electrostatic field (DESP) is connected to the information input of the device 20 back-to-hold information (ultrasound). One input of the first 21 and second 22 comparators is connected to the output of the DESP 19, and one HO to the output of the bipolar pi-KJOBoro detector (TU) 23. The TU 23 uses two information inputs connected to the output of the ultrasound 20, and the control inputs

(Both the VID 23 and the ultrasound 20 are connected to one of the outputs of the one-shot 6. The outputs of the first 21 and the second 22 are the AIM 17 compass input and the input to the input to the expander 11 pulses designed to generate a pulse with a duration of 1 s, which eliminates the registration of one of the same bit several times. A pulse from the output of the expander 11 is registered by the recorder 12 and its back-start triggers the driver of 13 pulses, which produces a normalizing pulse arriving at the input of an amplitude-pulse modulator (AIM) 17, as well as the third the input of the logic circuit 25. At the same time

of the chosen threshold device 2k, a quasi-constant voltage is supplied from the output of the range calculation unit 1b, the value of which depends on the ratio of the signals at the outputs of the peak detectors H and 15, and consequently, on the ratio of the maximum values of the signals at the outputs of the filters 3 and, thus, at the output of the module A torus appears with informative parameters determined by the requirements for the input signals of the analyzer 1I, and with an amplitude proportional to the corresponding distance to the range. This pulse is recorded in one of the channels (the choice of which is determined by the pulse amplitude) of the multichannel amplitude analyzer 18,

of the fourth threshold device 2k connected by its

The stroke to the output of the BDD 16, as well as the output (1 || organizer 13 pulses are connected

Respectively with the first, second.

the third and fourth inputs of the logic circuit 25. The four outputs of the logic circuit 25 are connected to the corresponding input of the multichannel register ftaTopa 26.

By purpose, the bipolar peak detector 23 is similar to the peak detector, except for the fact that it remembers the amplitude of the pulse from one sign with another sign. The information delay device 20 is intended to delay the signal i: DESP 19.

i The device operates as follows (eazomo

I Electromagnetic signal generated. by lightning, is perceived by antenna 1 and through matching device 2 1 enters the inputs of the one-shot 6 t filters 3-5. When a signal of a given threshold level is exceeded, a rectangular pulse appears at each of the outputs of the one-shot 6, the duration of which is chosen to be -1.2 seconds. The leading edge of a pulse from; one of the outputs of the one-shot 6 | peak detectors 14 and 15 is brought to a working state. From the same output of the one-shot 6, a pulse arrives at the control inputs of the information delay device 20 and the bipolar peak detector 23. At ground discharge, the amplitudes of the signals at the outputs of the filters 3-5 are sufficient to trigger the threshold devices 7-9, the outputs of which are are the pulses simultaneously acting on the inputs of the coincidence circuit 10. The signal from the output of the circuit 10 coincidence

AAM 17 input and input

It is connected to the input of the expander 11 pulses intended for generating a pulse with a duration of 1 s, which excludes the registration of the same bit several times. The pulse from the output of the expander 11 is registered by the recorder 12 and its back-start triggers the shaper 13 pulses, which produces a normalizing pulse at the input of the amplitude-pulse modulator (AIM) 17, as well as the third input of the logic circuit 25. At the same time, the information input AIM 17 and at the input even

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of the chosen threshold device 2k, a quasi-constant voltage is supplied from the output of the range calculation unit 1b, the value of which depends on the ratio of the signals at the outputs of the peak detectors H and 15, and consequently, on the ratio of the maximum values of the signals at the outputs of the filters 3 and, thus, at the output of the module A torus appears with informative parameters determined by the requirements to the input signals of the analyzer 1I, and with an amplitude proportional to the corresponding distance to the bit. This pulse is recorded in one of the channels (the choice of which is determined by the pulse amplitude) of the multichannel amplitude analyzer 18,

The device 20 of delaying information on the leading edge of the pulse from the single-vibrator 6 stops the output of information pulses.

Each information pulse has a duration of 5 ms (maybe 1-10 ms), a duty cycle of 2, and an amplitude corresponding to the intensity of the electrostatic field, measured by sensor 19, from 5 to 15 ms backward (depending on the arrival time of the pulse one-shot 6). The front of the pulse from the single-vibration 6 opens the bipolar peak detector 23 for the last information pulse with the ultrasound scan 20. The BD-23 memorizes the amplitude and sign of this information pulse at the time of the signal from the single vibrator 6. This amplitude is compared with the amplitudes of the signals at the output of DESP 19. When the electric field is more intense, after discharge, more than before the discharge, the comparator 21 is triggered.

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on the contrary, when the field strength after the discharge is less than before the discharge, the comparator 22 is triggered. Logically, the units or zeros are set at the first and second inputs of the logic circuit 25, respectively, at the outputs of the comparators 21 and 22. With the amplitude of the signal from the output of the block 1b, the calculation of the range exceeding the threshold value corresponding to the distance triggers the fourth threshold device 24. In this case, the output of the fourth threshold device 2k, and therefore also the fourth input of the logic circuit 25 There is a logical one. The normalizing pulse from the output of the FI 13 is transmitted to one of the channels of the multichannel recorder 26. At a distance of less than 10 km, the pulse will be written to the first channel of the multichannel recorder 26, if the change in the electrostatic field was positive, and to the third channel, if the change was negative. Accordingly, at a distance of more than 10 km to the discharge, the pulse will be recorded. the second channel with a positive change in the floor and the fourth channel with a negative change.

The number of registrations corresponds to: in the first channel, the number of negative ground bits at a distance of up to 10 km; in the second channel, the number of negative ground bits at a distance of more than 10 km; in the third channel, the number of positive ground bits at a distance less than 10 in the fourth channel, the number of positive ground and combined bits at a distance of more than 10 km. In this case, the recorder 12 records the total number of ground bits, and the multichannel amplitude analyzer 18 records the distribution of bits in range. The trailing edge of the pulse from one of the outputs of the one-shot 6 peak detectors 15 and I, BPD 23 and ultrasound 20 is transferred to the original

This is where the .20 delay information device is ready for operation 30 ms after the arrival of the trailing edge of the pulse.

If the signal perceived by antenna 1 is due to cloud discharge or is an interference, then at least one of the threshold devices 7-9 does not start, the output pulse 10 does not match, and therefore this signal is neither recorded by the registrar 12 nor by the multichannel recorder 26, nor is the analyzer 18 registering,

invention formula

The device registration of lightning bits on the author. St. f 1233085, characterized in that, in order to expand the functionality of the device due to the separation of ground bits by type, it is equipped with an electrostatic field connected in series, an information delay device, a bipolar peak detector and a first comparator, second comparator, fourth threshold device, a logic circuit and a multichannel recorder, the second input of the information delay device and the second input of the bipolar detector are connected to the output of the edovibrator, the first input The second comparator is connected to the output of a bipolar peak detector, the second inputs of the first and second comparators are connected to the output of the electrostatic sensor-lacKoro field, the input of the fourth threshold device is connected to the output of the range calculation unit, the output of the pulse former, the output of the fourth threshold device and the outputs of the first and the second comparators are connected to the corresponding inputs of the logic circuit, the four outputs of which are connected to the corresponding inputs of the multi-channel recorder.

Claims (1)

Claim Lightning discharge registration device according to ed. St. No. 1233085, characterized in that, in order to expand the functionality of the device by separating ground discharges by types, it is equipped with a series-connected electrostatic field sensor, an information delay device, a bipolar peak detector and a first comparator, a second comparator, a fourth threshold device, a logic circuit and a multi-channel recorder, the second input of the information delay device and the second input of the bipolar detector connected to the output of the single-shot, the first input the second comparator is connected to the output of the bipolar peak detector, the second inputs of the first and second comparators are connected to the output of the electrostatic field sensor, the input of the fourth threshold device is connected to the output of the range calculator, the output of the pulse shaper, the output of the fourth threshold device and the outputs of the first and second comparators are connected to the corresponding inputs of a logic circuit, four of whose outputs are connected to the corresponding inputs of a multi-channel recorder.