SU907495A2 - Device for lightening registering - Google Patents

Description

The invention relates to meteorological instruments used to obtain information on the number of components of lightning.

According to the main author. St. No. 610038, a device for recording lightning, for simultaneously registering the number of lightning and the number of components in them, consisting of a series-connected antenna, a filter, a single-oscillator component, a single-oscillator and a lightning recorder. A component number recorder is connected to the output of the component one-shot. To register all subsequent components of lightning, which usually have a smaller amplitude compared to the first component, there is a special connection between the lightning single-vibrator and the single-component of the components, through which the single-vibrator component triggers after the first lightning impulse is detected.

When the device is operated, its recorder accumulates information about the number of lightning and the number of components in them. This information allows you to calculate the average number of components.

in all registered zippers. Of considerable interest are the results of recording the number of components of an individual lightning {1.

However, the device in question, although it allows to receive such information, but with significant errors, since any subsequent lightning will also register

10 instrument and distorts information about the number of components of the previous lightning. Particularly significant distortion of information on the number of components of lightning is observed during intense thunderstorm

15 activities when lightning follow each other quite often. Thus, the absence of blocking in the circuit of the known device is its essential disadvantage,

20 since it does not allow reading the data from its recorders after exposing a device to a separate lightning without possibly distorting the recorded information with the signals of the next lightning.

The purpose of the invention is to improve the accuracy of information on the number of components of an individual lightning.

. The goal is achieved by

30 that the device for registration of the lightning equipment is equipped with a trigger, one input of which is connected to a lightning single vibrator, a BANE circuit connected between the filter and a single component vibrator, a signaling device whose input is connected to one of the trigger inputs, and a switch connected between the device case and the second trigger input , the second output of which is connected to the control input of the banned circuit.

The drawing shows a block diagram of the proposed device.

The device contains a serially connected antenna 1, filter 2, the banned circuit 3, one-component 4 components, the recorder 5 the number of components. To the output of the one-shot 4 components are connected serially connected one-shot 6 lightning and the recorder 7 the number of lightning. Between the one-shot zipper 6 and the one-shot 4 components, there is a special link 8, through which the threshold of the single-shot 4 components decreases after the first lightning pulse is detected. Trigger 9 and t signaling device 10 are also connected in series, the trigger input 9 is connected to the output of the one-shot 6 lightning, and the trigger output is connected to the control input of the BANE circuit 3. In addition, the device has a switch 11 and a push button switch 12 which are connected in parallel between the instrument case and one of the trigger inputs 9.

The device has two modes of operation: standby and continuous. The selection of the mode is determined by the position of the switch 11. During the standby mode, the switch 11 is open, with continuous closed.

When the device operates in continuous mode, the switch 11 is closed and the trigger 9 is not controlled by signals from the output of the one-shot 6 lightning. There is no signal at the control input of the BAN 3 circuit and it is able to pass signals from the output of filter 2 to the input of the 4 component components. When switch 11 is installed, which corresponds to the continuous operation of the device, all lightning flashes and components in them are recorded automatically, in this case it is impossible to determine how many components each particular lightning had. However, this mode of work does not require the presence of the teacher at the workplace.

In standby mode, the switch 11 and the foot switch 12 is open. Electromagnetic pulses arising in the surrounding space from each component of the lightning are received by antenna 1, filtered from interference by filter 2, passed through the BANNER 3 pattern, and fed to the input of the one-component 4 components. If the amplitude of the signal at the input of the one-shot 4 exceeds the threshold of its operation, the latter produces a rectangular pulse of standard amplitude and duration (3 ms). This impulse is fed to the input of the recorder 5 of the number of components and fixed in it. In addition, the pulse from the output of the one-shot 4 components is fed to the input of the one-shot b lightning and its rear edge starts it. A single-shot 6 lightning produces a standard amplitude pulse, the duration of which is slightly longer than the longest lightning and is about 1.5 seconds. This pulse, through a special link 8, controls the response threshold of the 4 components single-oscillator. As a consequence, the threshold of the 4 component odiovibrator is automatically reduced 2.5 times. This is necessary so that all components of the zipper are counted, since usually the signals from the subsequent components of the lightning are smaller than from the first component. The impulse produced by the one-shot zipper is recorded by the number 7 zipper. Thus, the registrar 7 records the number of lightning, and the registrar 5 - the number of components in the nickname.

In the standby mode of operation of the device, the leading edge of the pulse produced by the single-shot 6 lightning overturns the trigger 9 into a single state, as a result of which the control voltage is applied to the BANNER 3 and the signal passing through it is stopped. Thus, after registering a separate zipper, i.e. 1.5 seconds to :: the arrival of the first component, for the time of reading from recorders 5 and 7, the circuit is blocked, and to register the next lightning flash, trigger 9 returns to its original state by closing the push-button switch 12. The position of trigger 9 displays alarm device 10.

The switch 11 and the push button switch 12 serve to set the trigger 9 to its initial state, in which the control signal is not sent to the control input of the circuit. Moreover, if the switch 11 is closed (continuous mode), it shunts the button switch 12 connected in parallel with its contacts. If the switch 11 is open (standby mode), the trigger 9 is set to its initial state by momentarily closing the contacts of the button switch 12 .

In the proposed device due to the presence of the standby mode, you can get information about the number of components in one particular lightning. After each line is registered, the circuit is blocked, which allows recording readings from the recorders of the number of lightning and the number of components or output them to the digital printing device without interference.

Information on the number of components of a particular lightning bolt is necessary to determine the probability of the appearance of lightning with a certain number of components in it. The indicated probabilities depend on the terrain, such as thunderstorms, and are used in the calculations of lightning protection devices.

Claims (1)

1. USSR author's certificate 610038, cl. G 01 W 1/16, 05.06.78 (prototype), one