GB2286710A - Pest control device - Google Patents
Pest control device Download PDFInfo
- Publication number
- GB2286710A GB2286710A GB9325572A GB9325572A GB2286710A GB 2286710 A GB2286710 A GB 2286710A GB 9325572 A GB9325572 A GB 9325572A GB 9325572 A GB9325572 A GB 9325572A GB 2286710 A GB2286710 A GB 2286710A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control device
- pest control
- magnetic field
- electro
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/24—Scaring or repelling devices, e.g. bird-scaring apparatus using electric or magnetic effects, e.g. electric shocks, magnetic fields or microwaves
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/16—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves
- A01M29/18—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves using ultrasonic signals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
- B06B1/0223—Driving circuits for generating signals continuous in time
- B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
- B06B1/0284—Driving circuits for generating signals continuous in time for generating multiple frequencies with consecutive, i.e. sequential generation, e.g. with frequency sweep
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/55—Piezoelectric transducer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/70—Specific application
- B06B2201/75—Repelling animals, insects, humans
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Birds (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Mechanical Engineering (AREA)
- Catching Or Destruction (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
A pest control device comprising an oscillating circuit for producing an ultrasonic signal preferably over a range of predetermined frequencies and a pulsing circuit for inductively loading an existing household electro-magnetic field of a power supply, the ultrasonic signal and the change in the electro-magnetic field causing adverse effects in pests. <IMAGE>
Description
"A Pest Control Device"
The present invention relates to a pest control device for generating ultra-sonic sound and for creating an electro-magnetic field or altering an existing household electro-magnetic field to which pests such as cockroaches, mice, rats and other rodents react adversely.
Accordingly, the present invention provides a pest control device comprising an oscillating circuit for producing an ultrasonic signal and a pulsing circuit for inductively loading a power supply to produce a change in the electro-magnetic field of the power supply, whereby the ultrasonic signal and the change in the electro-magnetic field cause adverse effects in pests.
In order that the present invention may be more readily understood, an embodiment thereof will now be described, by way of example, with reference to the accompanying Figure which shows a schematic circuit diagram of a pest control device embodying the present invention.
As shown in the Figure, a pest control device 1 comprises an oscillating circuit 2 for generating ultrasonic sound of a predetermined range of frequencies and a pulsing circuit 3 for inductively loading a power supply line at predetermined intervals.
Referring to the Figure, a mains AC power supply is applied across junction points J1 of the pest control device 1. The supply is, for example, a 220V, 50Hz A.C.
supply. The supply is stepped down by resistor R1 and capacitor C1 then rectified by diodes D1 and D2 and smoothed by zener diode D3 in combination with smoothing capacitor C3 to provide a 15V dc supply.
The 15V dc supply powers a frequency divider U1.
The frequency divider U1 is provided with an input clock signal CL which is extracted from the 50Hz ac power supply. The clock signal CLK is passed through a resistor
R2 and filtered by a capacitor C4. The 50Hz clock signal is divided by the frequency divider by a factor of approximately 15 to produce an output pulse chain having a frequency of approximately 3Hz (i.e. producing an output pulse approximately every 0.3 seconds). The output pulses are provided in bursts approximately every 2.7 minutes to drive the optical coupler.
The output pulses are applied to an optical coupler
U2 which provides the output pulse trains to a control gate (pin 1) of triac TR1. The triac TR1 is connected in series with an inductor T1 such that when the triac TR1 is triggered by an output pulse from the optical coupler U2, current is allowed to pass through the triac TR1, thus allowing the mains ac supply voltage to pass through the inductor T1 thereby inductively loading the ac mains supply. The inductive loading of the mains supply will cause the phase of the ac mains supply to shift thereby altering the electro-magnetic field produced not only by the inductor T1 but also by the ac mains supply. This change in the electro-magnetic field has been found to affect pests such as cockroaches, mice, rats and other rodents adversely.When the output pulse from the optical coupler U2 to the control gate of the triac TR1 stop, the triac is effectively switched off and prevents the inductive loading of the ac means supply.
Thus, the electro-magnetic field of the mains supply is periodically varied at pre-determined intervals.
To prevent damage to the triac TR1 by voltage spikes when being switched on and off, a series RC circuit is connected in parallel across the anode and cathode terminals of the triac TR1 which are shown in the Figure as pins 2 and 3.
The 15V dc supply also powers the oscillating circuit 2. The oscillator U3, in the present case, produces an output signal varying by + 8kHz which is centred at 34kHz. The output signal is amplified by transistor TR2 and output to a piezo-electric ultrasonic transducer J2 for producing ultrasonic signals at a frequency of approximately 34kHz. + 8kHz.
The circuits 2, 3 are preferably operated simultaneously but can be operated independently of one another. When being operated at the same time, the ultrasonic signals are produced at approximately 34kHz but when the triac TR1 is on, the ultrasonic frequency sweeps between 27 and 40kHz. As shown in the Figure, slide switch 4 can be thrown to disable the power supply to the oscillating circuit 2.
To indicate operation of the circuits 2, 3 light emitting diodes D4, D5 are provided which are illuminated when their respective circuits 2, 3 are in operation.
Claims (10)
1. A pest control device comprising an oscillating circuit for producing an ultrasonic signal and a pulsing circuit for inductively loading a power supply to produce a change in the electro-magnetic field of the power supply, whereby the ultrasonic signal and the change in the electro-magnetic field cause adverse effects in pests.
2. A pest control device according to Claim 1, wherein the pulsing circuit includes an inductor which is pulsed at predetermined intervals by an ac power supply.
3. A pest control device according to Claim 2, wherein the pulsing is controlled by a switching means.
4. A pest control device according to Claim 3, wherein the switching means comprises a triac which is controlled by pulses from a frequency divider.
5. A pest control device according to any preceding claim, wherein the ultrasonic frequency is normally 34kHz.
6. A pest control device according to any proceeding claim, wherein the ultrasonic frequency is responsive to the operation of the pulsing circuit.
7. A pest control device according to Claim 6, wherein the ultrasonic frequency sweeps between set values when the pulsing circuit is switched on.
8. A pest control device according to Claim 7, wherein the ultrasonic frequency sweeps between 27kHz and 40kHz.
9. A pest control device substantially as hereinbefore described and as shown in the accompanying Figure.
10. Any novel feature or combination of features disclosed herein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9325572A GB2286710A (en) | 1993-12-14 | 1993-12-14 | Pest control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9325572A GB2286710A (en) | 1993-12-14 | 1993-12-14 | Pest control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9325572D0 GB9325572D0 (en) | 1994-02-16 |
| GB2286710A true GB2286710A (en) | 1995-08-23 |
Family
ID=10746582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9325572A Withdrawn GB2286710A (en) | 1993-12-14 | 1993-12-14 | Pest control device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2286710A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2167125A1 (en) * | 1998-11-05 | 2002-05-01 | Munoz Joaquina Caviedes | System for the control of plagues of mites |
| US6996029B1 (en) * | 2005-04-29 | 2006-02-07 | Stopest Unlimited, Llc | Pest repeller apparatus |
| CN110352947A (en) * | 2019-08-21 | 2019-10-22 | 佛山市顺德区美的饮水机制造有限公司 | Insect expelling device, method, water purifier and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1453103A (en) * | 1974-03-13 | 1976-10-20 | Sierra Research Corp | Apparatus for generating and radiating ultrasonic soundwaves for the control of pests |
| EP0129415A2 (en) * | 1983-06-17 | 1984-12-27 | Hideo Hayakawa | Method of and system for threatening pests |
-
1993
- 1993-12-14 GB GB9325572A patent/GB2286710A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1453103A (en) * | 1974-03-13 | 1976-10-20 | Sierra Research Corp | Apparatus for generating and radiating ultrasonic soundwaves for the control of pests |
| EP0129415A2 (en) * | 1983-06-17 | 1984-12-27 | Hideo Hayakawa | Method of and system for threatening pests |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2167125A1 (en) * | 1998-11-05 | 2002-05-01 | Munoz Joaquina Caviedes | System for the control of plagues of mites |
| US6996029B1 (en) * | 2005-04-29 | 2006-02-07 | Stopest Unlimited, Llc | Pest repeller apparatus |
| WO2006118918A1 (en) * | 2005-04-29 | 2006-11-09 | Stopest Unlimited, Llc | Pest repeller apparatus |
| CN110352947A (en) * | 2019-08-21 | 2019-10-22 | 佛山市顺德区美的饮水机制造有限公司 | Insect expelling device, method, water purifier and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9325572D0 (en) | 1994-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |