Technical Field of The Invention:
The invention is mainly for the agriculture field by preventing crops from locust attack by killing them using charged mesh of high voltage.
Prior Art:
A. Biological Control of Locusts and Grasshoppers
Control of grasshoppers and locusts has traditionally relied on synthetic insecticides. The development of effective oil formulations of Metarhizium anisopliae spores in Africa, Australia, and Brazil opens new possibilities for environmentally safe control operations. Metarhizium biopesticide kills 70% - 90% of treated locusts within 14-20 days, with no measurable impact on non target organisms.
B. RU2520277C2 Device for Trapping Locust
A device for catching adult locusts in the area of the light decoy formed by an electromagnetic radiation source, having a control unit, an autonomous source of electricity consisting of a solar battery, a battery charge controller and a battery supplying a control unit and an inverter with a microwave magnetron connected to it. with by means of which a damaging effect on the locust is carried out.
C. CN2604876Y Grasshopper catching-killing machine
The utility model grasshopper killing machine belongs to machinery field; which comprises a double-wheel cart, a rectangular horizontal framework on the cart frame, and a plurality of high voltage electric shock bar arranged horizontally and vertically on the framework. The high voltage electric shock bars arranged vertically are all in L shape, the lower end touches ground, and the upper end is connected with a spring, the other end of the spring is fixed on the long side of the framework. During the grasshopper killing process, the operation personnel wears high voltage protection shoes and gloves, press down the power switch on the handle, and push the cart moves forward.
D. US20130077446A1 Ultrasonic Grasshopper and Pest Deterrent
Disclosed is an ultrasonic pest deterrent device adapted for use in greenhouses and gardens, comprising a printed circuit board, output signal transducer and a housing adapted to shroud the components of the assembly within its waterproof interior. The device comprises a ramp signal generator and voltage control oscillator adapted to sweep between a chosen set of switchable frequency pitch ranges and tones, a sweep stops for single tone testing, a confidence test button, a power switch and indicator light.

E. RU2676145C1 Method of locust extermination and device for its implementation
Device for locust extermination includes a suction machine. Suction machine is an industrial vacuum cleaner with a hopper, a hose, a sucker pipe with a nozzle and a heat reflector attached to it. Reflector provides the possibility of heating the limited air space together with the locust to a temperature of at least 52 °C. Heat exposure is carried out by a stream of heated air with a temperature of at least 52 °C in the affected area.
F. CN201854617U Locust catcher
A locust catcher disclosed in the utility model comprises a chassis, wheels and locust catching mechanisms, wherein the chassis is provided with a wheel-driving device or a device connected with a pulling motor.
Objectives:
1. To prevent the crops from the locust attack by killing them using a charged mesh.
2. To make a device with high efficiency and accuracy to kill locust within affected area (Target area).
3. To give a rapid solution for getting rid of countless locusts spread in big area.
4. To kill the locust without any side effect to human body and living organisms.
5. To give a nature friendly solution for the locust killer.
Summary:
Locust is a harmful insect whose food is leaf, and soft tissues of plant. Locusts destroy whole crop in the area where they target and causes a disaster. As the reproduction of locust is also very high, so it is always better to get rid of them as soon as possible otherwise there will be a big loss to crops and trees. Pakistan, Iran, India, and Argentina are the major affected country by the locust. Till now chemical spray are used to kill these locusts which are harmful for human body, other living organisms and plants. The purpose of this invention is to propose an electrical solution for locust killing. The proposed electric charging solution not only kills the locust very efficiently and rapidly but also is environment friendly and has no side effect on human body. The present invention consists of a device having five layers. The innermost mesh of the device is charged by a high voltage of 2000 to 3000V, outermost two meshes are at ground potential and because of this potential difference locust explode when it strikes the mesh. The two insulating layers are placed between innermost and outermost conducting meshes to avoid short circuit between them. The normal speed of locust is 20 to 25 km/hour and they can maximum travel up tol00-200km/day. If the charged device is moved over the affected area with a help of drone, moving with a speed more than that of locust, these locusts can be killed easily. Drone speed and direction can be controlled using remote control. In addition to the charged mesh a horn system is also used to distract locust by making loud noise, and hence force the locust to fly, in case they are sitting on the crops. The present invention is very useful in environment protection and is suitable for large area application.

Brief description of the drawings:
These are the details of the drawings given for illustration of the present invention.
i) Fig. 1 is the schematic diagram of the proposed electrical device.
ii) Fig.2 is the block diagram of the high voltage circuit. iii) Fig.3 is the picture of working model of locust killer.
Detailed description of the Invention:
Locusts attack in a large number suddenly on any field/area and destroy the crops in that area completely. The electrical solution given can kill the locust rapidly in a large area in one time. The proposed device for the same is shown in fig. 1, and consists of five layers. The innermost mesh has 0.5cm mesh hole, made up of a conducting wire (Aluminum). On both sides of the innermost mesh, light weight insulator layers of high strength are placed. On the extreme ends, outermost conducting meshes (Aluminum) having 3cm mesh holes are placed. The dimension of mesh hole is chosen on the basis of size of locust such that it should enter through the outer mesh but should not be able to cross the inner mesh. The reason to put the insulator layer between inner and outer mesh is to avoid the short circuit condition when the device is in on state. The space between the inner and outer mesh is kept between 1-2 cm, to accommodate an insulator layer between them. The two outer meshes are connected by a wire and will be earthed through the negative terminal of the high voltage circuit. The inner mesh will be connected to the positive terminal of the circuit with a high voltage of 2000-3000 V and hence a potential difference will be created between two meshes. Now whenever a locust strikes with the mesh, it will explode due to high voltage. As the aluminum wire is used to make the conducting inner and outer meshes, therefore the device will be light weight resolving the issue of weight constraints.
Fig.2 is the block diagram of the high voltage circuit. It has an AC-DC converter, which converts 220V supply to a desired DC output voltage and is used to charge the battery in the device. This low DC output voltage is again converted to a very high AC voltage using a transistor, transformer and a voltage multiplier circuit. The battery used in the high voltage circuit is a rechargeable battery acting as a source of supply to the electrical device.
The picture of working model for locust killer is shown in fig.3. The high voltage circuit is attached to the outer frame of the mesh and is electrically connected to the inner and outer meshes of the device. It is shown that with a help of drone the charged device, when in on state, is lifted in the air, can kill the flying locust. If the locust sits on the crop, then making sound with the help of horn they can be forced to fly and then can be hit. This system has four major parts-
i. Drone: Drone will uplift the device and fly with speed more than that of locusts. The speed
and direction of the drone can be controlled by remote control, ii. Electric Device: The charged device having a high voltage of 2000-3000V will kill the
locust striking with it. The inner and outer aluminum mesh of size 4*4 feet will

approximately weigh 4.5kg.The total weight of the device will depend on the type of
material used for the insulator layer and frame. However, the size of the device may vary as
per the application area and means to lift it.
High voltage circuit: This circuit includes a battery charger, DC-AC converter and a
voltage multiplier circuit to get a high voltage between 2000-3000V. This circuit when in
on state, charged the electrical mesh.
Horn: It is used to distract locusts and make them fly in case they sit on the crop. The
volume of the horn may vary between 90-1 lOdb so that locusts get distracted and start
flying, if sitting on the crops. The switching of horn will be controlled by remote.
Inventive step of the invention:
1. The mechanical design of the device has five layers. One innermost conducting mesh, two insulating layers and two outermost conducting meshes. The hole size of the conducting meshes are chosen based on the locust size. The outer mesh has a hole spacing of 3cm so that the locust can enter the mesh while the hole spacing of the inner mesh is taken to be 0.5 cm so that the locust cannot pass through it. Hence, the locust will be trapped and due to short circuit of two meshes it will be killed.
2. A high voltage circuit is attached to the outer frame of the device to charge the innermost mesh of the electric device. A high voltage of 2000-3000V is given to the inner mesh of the device and outer mesh is grounded and due to this a potential difference is created between inner and outer mesh. This potential difference leads to a short circuit whenever any locust strikes the mesh. The mesh when lifted with a drone can be moved in a large area in less time and the large number of locusts can be killed very effectively.
3. A horn system attached separately with the device is used to make a loud sound so that the locust sitting on the crops gets distracted and starts flying.
4. It is easy to kill locusts when they are flying, so the concept of drone is added. Drone can also fly at a lower height of 20-25m. So, when locusts are flying above the crops, it will be easy to kill them with the help of drone flying with a hanging charged device.
5. As the drone will be moving with a speed more than that of locust, so, it will be possible to cover a large area to kill locusts in less time.
6. The proposed device works by creating a high potential difference between two meshes and, hence killing locusts. As this device is not using any pesticide to kill the locust, so it does not have any side effect on the human beings and is also nature friendly.
7. The present invention is suitable for large area application and is also environment friendly.
Industrial Applications:
1. This device will be mainly used in agriculture.
2. The device can also be used near the sewer, drain where lots of insects are produced.

Claims:
1. We claim that Mechanical Design of electrical device has five layers.
2. The electric device as per claim 1, will have a spacing of 1-2 cm between innermost and two outermost layers.
3. The electric device as per claim 1, will have space hole of 0.5 cm in the innermost conducting mesh made up of aluminum wire.
4. The electric device as per claim 1, will have space hole of 3 cm in the outermost conducting mesh made up of aluminum wire.
5. As per claim 1, two insulator layers will be placed on both sides of the innermost electric mesh so that it does not short circuit with the outermost electric mesh.
6. The high voltage circuit will be attached to the outer frame of the device to provide high voltage to the innermost mesh.
7. We claim that the horn system attached with the electric device will increase the killing efficiency.
8. We claim that the device when hung with the drone, in on state, kills the locust speedily in an effective manner with high efficiency and accuracy.
9. We claim that with the help of drone, a large area can be covered in less time.
10. We claim that the proposed device does not have any side effect on human being and environment.