JPS6180795A - Lightning inducer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a lightning arrester for inducing discharge of thundercloud charges;
In particular, it relates to a lightning arrester using two lasers.

[Prior art]

Conventionally, lightning rods have been known as so-called lightning arresting devices that induce lightning strikes between thunderclouds and the ground. In addition, as an active lightning induction device, one end of a conducting wire is fixed to a rocket, the other end of the conducting wire is grounded, the rocket is launched, and lightning strikes via the rocket and the conducting wire, so-called rocket lightning. -So-called laser lightning induction is considered, which uses a laser to create a single ionosphere between the thundercloud and the ground, and causes lightning to strike through this ionosphere.
or has been implemented.

[Problems with conventional technology]

In the conventional device as described above, when a lightning rod is used, there are restrictions on the installation location and height of the lightning rod, and there is a limit to the area that can be protected from lightning strikes. Also.

Lightning arresting using lightning rods is passive and cannot actively discharge the charges accumulated in thunderclouds.

On the other hand, rocket lightning strikes simply bring a conductive rocket closer to a thundercloud, and the probability of success is low.

Additionally, since the rocket cannot be reused, there are problems with manufacturing costs, etc.

Furthermore, in laser lightning stimulation using a single laser.

It is necessary to form an ionized region of 4 to 6 km between the ground and the thundercloud, which requires a laser output on the order of gigawara (GW), and even if a higher output laser generator is used. 1. It has the disadvantage that the high-density plasma it generates at low altitudes absorbs too much laser light, and there have been no success stories yet.

Furthermore, the lightning arresting device described above is a device for attracting lightning between the ground and thunderclouds, and cannot perform any operation against electrical discharge between ideal thunderclouds that does not cause harm to people or buildings.

C. Purpose of the Invention] In view of the above-mentioned conventional drawbacks, the present invention aims to provide a lightning arresting device that uses 52 colors of laser light and actively induces electrical discharge between thunderclouds or between thunderclouds and the ground at low output. It is something to do.

[Structure of the invention]

In order to achieve the above object, the present invention has a first laser generating means for generating an ultraviolet laser and a second laser generating means for generating an infrared laser, and the present invention includes a first laser generating means for generating an ultraviolet laser, and a second laser generating means for generating an infrared laser. It is characterized by focusing the light on the same position.

[Embodiments of the invention]

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 (Al is a block diagram of the lightning arrester of the present invention.

In the figure, a carbon dioxide gas (hereinafter referred to as CO2) laser oscillation device 2 with a single oscillation wavelength of 10.6 μm is placed on the ground 1.
and krypton fluoride whose oscillation wavelength is in the ultraviolet region (
A laser oscillation device 3 (hereinafter referred to as KrF), a concave mirror 4 and a lightning rod 5 for reflecting and condensing laser beams from the respective laser oscillation devices 2 and 3 are provided. The CO2 laser oscillation device 2 oscillates a single shot laser beam with an output of 10 kilojoules (KJ) and a pulse width of 100 ns.

The KrF laser oscillation device 3 also oscillates a single shot laser beam with an output of 10 KJ and a pulse width of 100 ns.

In addition, CO2 laser oscillation device 2. Ten KrF laser oscillation devices 3 are provided, and as shown in the plan view of FIG. 1(b), the CO2 laser oscillation device 2 and the KrF laser oscillation device 3 are arranged in a circle facing each other. The CO2 laser oscillation devices 2a to 2j and the KrF laser oscillation devices 38 to 3j arranged in a circular manner are connected to synchronization circuits 6 and 7 for synchronizing the laser light output, and the control signal of the delay circuit 8 According to 1 e.g. 100n
The delay signal of s is output from the delay circuit 8 to the synchronization circuits 6 and 7, and the respective delayed signals are output to the CO2 laser oscillation device 2a.
2j and KrF laser oscillation devices 3a to 3j.

On the other hand, the concave mirror 4 is provided at a position to condense all the laser beams emitted from the CO2 laser oscillation devices 2a to 2j to one point in the thundercloud 9 approximately 41 to 6 km above the sky. concave aJ
4a to 4j are provided at positions facing each of the KrF laser oscillation devices 3a to 3j.

The laser beams emitted from the KrF laser oscillation devices 3a to 3j are each reflected by the concave surfaces 1J4a to 4j, reflected by the above-mentioned concave mirror 4, and focused at a constant interval 1 on the optical path of the laser beams to the thundercloud. be done. This interval β is 1, for example 400
A distance of about n is experimentally considered. Further, the tip of the lightning rod 5 is located on the laser beam path reflected by the concave mirror 4, and the lightning rod 5 and the concave mirror 4 are provided at a constant distance.

This certain distance is lightning protected! When there was a lightning strike at +'5 concave mirror 4
This is a distance that does not have a negative impact on Furthermore, in order to avoid the effects of lightning as much as possible, the main body and reflective surface of the concave mirror 4 are made of highly insulating materials, and the entire mirror is shielded with a metal mesh or the like.

By arranging the lightning arrester as described above when a thundercloud occurs, the lightning arresting operation of this device will be described below.

First, the concave mirror 4 is rotated so that the CO2 laser light is focused on the thundercloud 9, and the CO2 laser light is set by a method such as calculation or drawing. Next, after the CO2 laser beam is reflected by the concave mirror 4, the above-mentioned interval 1 is maintained on the optical path while the CO2 laser beam is reflected by the concave mirror 4, and the concave mirror 4 is moved so that the KrF laser beam is condensed.
Operate a to 4j.

After setting the positions of the concave mirrors 4.4a to 4J as described above, the KrF laser oscillators 3a to 3j simultaneously generate a KrF laser with a pulse width of 100 ns according to the synchronizing signal from the synchronizing circuit 7.
Emit F laser beam. The emitted KrF laser beams are each reflected by concave mirrors 4a to 4j and condensed at a constant interval β on the optical path of the CO2 laser beam. For example, KrF
The KrF laser beam emitted from the laser oscillation device 3j is reflected by the concave mirror 4a, and focused on the position A closest to the earth 1 on the optical path of the CO2 laser beam, and the rF laser beam emitted from the KrF laser oscillation device 31 is is reflected by the concave mirror 4b.

The CO2 laser beam is focused on the optical path at a position B that is a distance l higher than the above-mentioned position. Similarly, KrF laser oscillation device 3
The KrF laser beam emitted from h is focused at a position C (not shown) which is higher than position B by a distance l, and each KrF laser beam is sequentially focused in the same manner, and this focusing position (hereinafter referred to as spot A, B, C, etc. (indicated by dots) are arranged in a straight line on the optical path of the CO2 laser beam. At each spot point, when a gas such as hydrogen, oxygen, or nitrogen in the air receives the energy of multiple photons from the KrF laser beam, the gas becomes ionized due to the so-called multiphoton ionization effect in which these atoms or molecules are ionized. becomes.

Here, since the oscillation wavelength of the rF laser beam is in the ultraviolet region, the energy per photon is large and the gas at the spot can be efficiently ionized (ionized) by multiphoton ionization. In this way, electrons are generated at each spot point, but the number of electrons is not sufficient for lightning induction, and these electrons are delayed by 100 ns from the KrF laser oscillation devices 3a to 3j and emitted by the synchronization signal of the synchronization circuit 7. CO2
It is excited by irradiating laser light, and further electrons are generated by collision of electrons, and 1 per unit volume required for lightning arrest.
Generates 0 electrons.

In this way, electrons that are likely to cause a lightning strike are generated at each spot, and the charges accumulated in the thundercloud 9 are discharged through each spot that is more likely to be discharged than other locations on the ground 1. At this time, the discharge current does not flow from each spot point to the ground 1, but to the lightning rod 5 provided on the extension line of each spot point, so there is no risk of damaging buildings or concave mirrors 4 on the ground 1.

As described above, according to this embodiment, by forming conductive channels made up of individual spot points from the thundercloud 9 to the earth 1, the conductive channels are formed from the thundercloud 9 to the earth 1'. Even the number of lightning rods installed was artificial. Discharge Sutra! By forming a path, the accumulated charge of the snow cloud 9 can be safely discharged.

FIG. 2 ta+ and (bl) are other embodiments of the lightning arrester of the present invention.

In this embodiment as well, as in FIGS. 1(al and bl), a CO2 laser oscillation device and a KrF laser oscillation device are used to reflect and condense the emitted laser beam with a concave mirror. ) and (b), the same numbers are given to the same parts, and the explanation of the structure is omitted.

The difference from the above embodiment of the present invention is that the KrF laser beam is not focused on the optical path of the CO2 laser beam, but is focused on the same position below the two clouds 9, and at the same time, the KrF laser beam is focused on the same position below the two clouds 9. The light and KrF laser beam are focused. Therefore, in the configuration of this embodiment, each KrF laser oscillation device 3a to 3j, CO2
Concave mirrors 4a to 4 corresponding to laser oscillation devices 2a to 2j
j, 9a to 9j are each arranged in a circular shape. Also,
The C○2 laser transmitters 2a to 2i and the KrF laser transmitters 3a to 31 are delay circuits 10a to 10i, ll, respectively.
a to 11i, and each delay circuit 10a to 10
A time delay of 100n S is performed every j.

For example, according to the delayed signal, CO2 laser light,
Each set of KrF laser beams operates in synchronization with the synchronizing signal of the synchronizing circuit 12 and 13 every 100 ns.

Therefore, since the pulse width of each laser beam is 100 ns, both laser beams are irradiated at the same position for 100 ns x 10 = lμs, and the thundercloud 9
The spot point focused on one point at the bottom enters an electron generation state where it can be discharged by the aforementioned multiphoton ionization effect and electron excitation by the CO2 laser beam.

Normally, at the bottom of the thundercloud 9, as shown in ta+ in the same figure, weak charges are generated that have the opposite polarity to the charges accumulated in the upper layer.
Discharge starts from this part. So by positioning the spot point here.

Can trigger lightning strikes. The lightning induced in this way falls on the lightning rod 14 located at the center of the lightning arrester, as shown in the figure (bl).

Further, by positioning the spot points of the C02 laser beam and the KrF laser beam between the thunderclouds 9, a certain position between the thunderclouds 9 can be made into a conductive ionized state, and a discharge can be caused between the thunderclouds 9. According to this method.

The accumulated charge in the thundercloud 9 can ideally be discharged without causing any harm to people or buildings on the ground 1.

In this embodiment, ten CO2 laser oscillation devices 2a to 2 are used.
Although the structure was constructed using 10 rF laser oscillation devices 3a to 3j, if it is possible to generate electrons that can induce lightning, for example, 9, 8, etc., and 9 CO2 laser oscillation devices 3a to 3j. ,
It may be configured using eight KrF laser oscillation devices and opposing concave mirrors. Furthermore, by using a laser beam splitter that separates laser beams, the lightning arrester may be configured with fewer CO2 laser oscillation devices and KrF laser oscillation devices than the number of concave mirrors.

Furthermore, a CO2 laser oscillation device used in the present invention'la
~2j, KrF laser transmitters 3a to 3j, concave mirrors 4.4a to 4j, and 9a to 9j are mounted on a movable object such as a car so that the installation position can be changed immediately according to the movement of the thundercloud 9. This allows for more efficient lightning arrest.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to prevent lightning strikes and protect people and buildings from lightning accidents, as well as power generation equipment and power return equipment.

This can prevent noise from entering power lines, etc. Also.

It is possible to provide an effective lightning arrester with low output by taking advantage of the characteristics of two-color laser beams, ultraviolet and infrared.

[Brief explanation of the drawing]

Fig. 1fa) is a block diagram of the lightning arrester of the present invention, Fig. 1b
l is a plan view of FIG. 1 (al), FIG.
Figure (plan view of al. 1...Earth, 2.2a-2j...CO2
Laser oscillation device! , 3.3a-3j...K
rF laser oscillator, 4.4a to 4j. 9a to 9j... Concave mirror, 5.14... Lightning rod, 6,7,12.13... Synchronous circuit,
8.10a ~ 10i, 11a ~ 11i°°°
Delay circuit/
1 Figure 1 (0) Figure 1 (b) Figure 2 (b)

Claims (1)

[Claims] It is characterized by having a first laser generating means for generating an ultraviolet laser and a second laser generating means for generating an infrared laser, and condensing the ultraviolet laser and the infrared laser at the same position. A lightning arrester.