OA12692A - Electronic device for mosquito repellent. - Google Patents

Description

1

MOSQUITOUS ELECTRONIC HUNTING APPARATUS

The present invention relates to an electronic device emitting ultrasound capable of hunting mosquito, malaria vectors and transmitters over a radius of 4 meters.

There are electronic ultrasound devices that aim to keep pests away (insects, mice, ..

Unresolved technical problems in the past are: (a) The inadequate frequency of ultrasound emitted by these apparatuses to the pests of tropical countries and a nonspecialization of these frequencies by harmful means. b) On the other hand, the devices that we know emit constant frequency ultrasonic waves to which these pests adapt themselves after a time. The apparatus object of the innovation makes it possible to solve these problems in that it emits ultrasounds of varied and self-variable frequencies in a range adapted to the pests of our tropical countries

The single board represents the fundamental electronic scheme that is the basis of any variant of this device. The different parts of this diagram are as follows: the transformerless DC power supply of the system composed of two power capacitors (C6), the bridge of four rectification (bridge), the capacitor (C5), the resistor (R4), and of the light-emitting diode (del) the voltage-controlled oscillator or VCO. With the resistor (RI), the resistor (R2), the capacitor (C1), the integrated circuit (C1), the signal shaping block control of the VCO. composed of the capacitor (C4), the resistor (R3), the capacitor (C3) 2 the operative part of the system, composed of the capacitor (C2), the ultrasonic buzzers (HP)

This description is illustrated and summarized as follows;

The power supply supplies power to the VCO and the operative part. It also allows the shaping block to generate the VCO control signal which in turn produces a signal whose frequency varies within a certain range. This amplified signal is transformed into ultrasonic buzzers (HP).

The following table presents the detailed description of the subassemblies above for a model adapted to the space of medium and small chambers (5x5x2m) power supply designation number characteristics Non-polarized capacitor power (C6) 02 0.22 microF, 630 V 0.2 microF, 400 V Bridge ( of diodes) 04 1N1007 Polarized capacitor (C5) 01 100microF, 25V Resistors R4 01 2.2 K, * / 2 W LED 01 green VCO designation number characteristics Resistors RI, R2 02 1 K, 1/4 W 15 K, * / <W Capacitor (Cl) 01 InF, ceramic Integrated circuit (IC) 01 NE555 3

VCO control signal formatting designation number characteristics Capacitors (C3), (C4) 02 10 nF, 63 V 220 nF, 63 V, Resistor R3 01 150 K, 1/4 W Operational part designation number characteristics Capacitor (C2 ) 01 1 microF, polarized Buzzers (HP) 02 AC6V

The detailed characteristics of this model give the following results; The power supply provides a DC voltage of substantially 12Vdc and provides the square signal in the direction of the shaping block which controls the terminal 5 of IC (NE555) by a signal which varies between 4V and 7.5V; this range of variation is at the origin of the frequency variations at the output of the VCO between 22Khz and 50Khz, hence the variety of ultrasounds.

With regard to the operation of the power supply, the capacitors (Cô) make it possible to drop the 220 V mains voltage which becomes square at the input of the rectifier bridge (bridge). A removal of this last signal is used for the control of the VCO. The absence of transformer has the advantages of not limiting strictly the useful power, to make the whole device very light and to minimize its bulk.

The (del) protected by (R4) makes it possible to indicate simply the presence of power supply voltage and therefore of the mains voltage.

Regarding the operation of the VCO (controlled oscillator entension), the assembly constituted by the (NE555), (RI), (R2), (Ci) is a simple oscillator producing a square signal of fixed frequency. The choice of the values of IR, R2, C1 sets the value of this frequency to the calibration of the apparatus according to the type of insect or animal that will undergo these effects. For this case, the frequency is 31 Khz.

Since certain animals have the ability to adapt quickly to a frequency or a type of sound, we propose that the sound is not unique, but diverse. This will hunt other pests sensitive to these frequencies.

Technically, the shaping block consisting of C3, C4, R3 whose electronic function is; integrator, will use a sampling of the square-shaped voltage at the input of the rectifier, voltage coming from the SECTOR in order to demodulate through the pin 5 of the IC (Ne555), the frequency of the signal of the oscillator between a minimum frequency and a maximum frequency: This phenomenon being itself periodic of frequency 50 Hz, frequency of the detector.

This has the effect of causing the animal's hearing a set of deafening noises, thus forcing it to change sites.

Our different experiences have led us to note that the mosquitoes are allergic to frequencies between 22 Khz and 50 Khz.

Regarding the operative part, the capacitor C2 stops the component continues and passes high frequency signals that will be transformed by the buzzers (HP) ultrasound, sounds inaudible to the human ear. The amplification factor of the signals outputted from the VCO consists in connecting the auxbuzzers (HP) arranged in parallel directly to the highest power supply so that they can draw the maximum of current and thus produce a great ultrasonic intensity.

Claims (7)

CLAIMS. 1 - An electronic mosquito hunting apparatus characterized in that it iscomposed; - A continuous supply consisting of power capacitors (C6), rectifying diodes (bridge), decondensers (C5), resistors (R4), and the light emitting diode (LED), - A voltage controlled oscillator or VCO.constitué resistors (RI), (R2), capacitors (Cl), integrated circuit (IC), which generates the ultrasonic electrical signal, - a shaping block of the control signal duVCO.Constitué capacitors (C4), (C3), resistors (R3), which allows to vary the frequencies of the signals produced by the VCO, - The operative part of the system, consisting ofcapacitors (C2), buzzers (HP) ultrasound. 2- An electronic mosquito hunting device characterized according to claim 1 in that it allows to produce ultrasound frequencies varied andauto variable between 22 Khz and 50 Khz. z 3- An electronic mosquito hunting apparatus characterized according to claim 1 in that little limited in power, the amplification at the stageoperative part is performed so that the load (buzzers (HP) arranged parallel) is connected not to the terminal (- ) of the power supply, but rather to laborne (+), so that it is not the CI (NE555) that provides them with power, but rather power: as a result the device can support severalbuzzers (HP) . 6 4- An electronic mosquito hunting apparatus characterized according to claim 1 in that it is adaptable to a continuous input voltage, or alternative; According to the available source of electrical energy, according to the available source of electricity, a variant 220 V, a variant 110 V, a battery variant, a variant with energy conservation for a load shedding case can be distinguished. 5- electronic device mosquito hunting characterized according to claim 1 in that it is achievable in several variants according to the spaces to be protected. 6. An electronic mosquito hunting apparatus characterized according to claim 1 in that it is lightweight and compact, and can be incorporated into any domestic appliance, such as the fan, etc .... 7- An electronic mosquito hunting device characterized according to claim 2 in that the frequencies and ultrasound it produces allow mosquitoes to move away, other harmful such cockroaches, mice, etc ...