Remote, Sound-Emitting Anti-Barking Devices They don't seem to work worth a damn, but remote sound-emitting anti-barking devices are, essentially, noise-blasting gizmos, fueled either by batteries or by AC power. The devices contain built-in sensors that respond to a nearby barking dog by releasing a piercing, high-pitched sound that some canines find intolerable.
Of course, hitting a dog with noxious sound waves every time he vocalizes has the potential to reduce the animal's rate of barking precipitously. And if, instead of using the ultrasonic frequency, you blast out an overpowering, fully audible tone that penetrates his owner's home, that is more likely yet to have an effect.
Using a Remote, Free-Standing Sound-Emitter to Quiet Your Neighbor's Dog The type of emitter used for quieting your neighbor's dog is called a "freestanding" sound-emitting device, although, why is not exactly clear, since they are not actually freestanding at all.
Rather, you must attach the thing to a platform, in a position that creates an unobstructed line-of-sight running directly from the device to the ear of the dog.
Any buildings, foliage, fences or the like that come in between the device and the ear of the dog will make it less likely that the instrument will have the desired effect on the animal. For that reason you may need to mount the device up high, pointing down into your neighbor's yard.
That way, the sound can be projected in a straight line over the top of any fences or other barriers that might otherwise block the sound waves from a direct line of travel. Some freestanding S. There is a different type of free-standing, sound-emitting device that also contains a second setting, one that will cause the machine to emit a noxious, ultrasonic sound that can be detected only by dogs, and not by humans.
The Dog Owner's Reaction and the Police Response You have to wonder how your neighbor is going to take it when you start blasting noxious sound waves over the fence at his dog. N reader who was suffering at the hands of a heartless neighbor who was keeping several barking dogs in his backyard.
The neighbor denied that his dogs were barking. But the reader proved otherwise by mounting a sound-emitting device in his backyard that shot a burst of God-awful retaliatory noise into his neighbor's house and yard, using a tone that was audible to both man and beast.
Can A High Power Ultrasonic Dog Repeller Go The Distance?
And with the device in place, it happened again every time the neighbor's dogs barked. The dog owner called the police. I gather that he was of the opinion that noise - blasting into one's home from a neighboring yard - is an intolerable irritant. The police officer who responded to the call, however, simply told the dog owner, "As long as your dogs are quiet, there won't be a problem.
Pretty much everywhere, when it comes to anything to do with barking dogs, it is the unofficial policy of the police to have minimal involvement and, therefore, to do as little as possible.
As a result, there is an extremely strong tendency for law enforcement to accept the status quo, and simply drive away at the end of every barking dog-related call, leaving everything just exactly as they found it. For that reason, if you handle it right, there is a good chance that the police might accept your decision to blast your neighbor and his barking dog with an audible tone.
Although, undoubtedly, they would be more likely yet to accept your intervention if you were to activate the device using only the ultrasonic mode, which is inaudible to humans. Nonetheless, you never know. If the cops fail to see your point of view, or they don't like your attitude and you refuse to take the thing down, they could probably find something to charge you with. So tread lightly. You would do well, however, to remember that the police could prove to be the least of your worries.
But They Just Don't Seem to Work This website has received such consistently negative reports about the effectiveness of remote, sound-emitting, anti-barking devices that we have chosen not recommend such products and we have removed all links to retail outlets. Links will be reestablished if and when the manufaturers of the products in question can show that the devices work as advertised. Org Barkingdogs.The discussed circuit is designed to discourage dogs from barking in the selected zone by the generation of a synchronized ultrasonic sound waves in response to a few initial barking of a particular dog.
The circuit when correctly optimized will produce a high pitched ultra sonic sound each time it senses a dog bark. Since the sound is in the ultrasonic range will be inaudible to humans, and audible to only dogs present in the vicinity. Referring to the above shown dog bark inhibitor circuit, we can see three distinct stages involved, the sound sensor and preamplifier circuit using the Q1 and the electret MIC stage, the monostable stage using IC1 and the associated parts and the ultrasonic sound generator stage using the IC2 and the speaker driver stage.
Whenever a dog barks, the Mic detects it causing a sequential low and high pulse at the base of T1. T1 responds to this and produces an equivalent amplified signal across C2, which in turn triggers the pin 2 of the monostable IC1.
This high at pin 3 of IC1 enables the reset pin 4 of IC2 to become active thereby allowing the astable IC2 to supply the ultrasonic pulse at its pin 3, which is appropriately amplified by the associated TIP transistor, driving the connected speaker.
The speaker vibrates at the specified amplified level throwing the ultrasonic sound in the direction where the dogs need to be driven away. The above sound waves is supposed to fluster the dogs and cause a lot of disturbance in their ears due to its high pitched sound, and also due to its synchronized effect with the dog's own barking sequence. Actually the above dog barking stopping device might respond to all types of high dB sound levels, however since it won't be audible to a human ear this will never be an issue, and may be ignored.
If you find the above dog barking prohibitor circuit not responding to barking signals or any sound distant signals correctly, then you must try upgrading the MIC stage with an IC based MIC amplifier stage as shown in the following image:. Once you build the above circuit, you can eliminate or remove R1, R2, C1 from the first circuit, and replace it with the mentioned op amp based MIC amplifier circuit and configure the C3 output from the op amp with the base of Q1.
This upgrade will ensure that the circuit responds appropriately even to weak sound signals, specifically dog barking sound during night time, and trigger the IC stages for the intended results. To make the above design respond to dog barks at distances over 50 meters, the following modified idea could be tried. However this circuit being extremely sensitive could get triggered by other forms of sounds in the vicinity.
A simple transistorized circuit presented below can be used as effectively as the above designs for scaring the dogs or any animal away from a distance. If you wish to use some other form of deterrent instead of the indicated high power alarmyou can replace the speaker with a relay and connect the desired load with the relay contacts.
The relay based design is demonstrated in the following diagram:. The parts list will be the same as above, except the T3, which can be replaced with BC transistor.
If you have any circuit related query, you may interact through comments, I'll be most happy to help! Your email:. There are a lot of remote dog bark devices on the market.
Because you have extensive experience in their electronics, potential purchasers of such devices would benefit greatly from your evaluation of their respective efficacy and utility. You could do U-Tube presentations and perhaps interest an investor to partner with you in making and selling those of your design, or a corporate sponsor in evaluating different brands. Appreciate your thoughts very much! The neighborhoods available to elderly me for health walking have many obnoxious barking dogs.
Can I run this through an external amplifier? What is want a circut board that just triggers when barking occurs. Want to link to self defense dog vest. Dog barks taser set off. Other dog gets shocked while they are attacking.
Was thinking taser vest. Any help would be great. I have updated the required design at the end of the post, but please do not use a taseryou can use something else instead.
Swagatan, can the optional circuit to increase sensitivity be powered with a 12 VDC supply as the mais circuit?The ultrasonic receiver is a device that can detect sound waves that are normally beyond the range of human hearing, and then translate this signal to audible frequencies.
The ultrasonic generators are devices that create ultrasonic sound waves, which can be used in some novel ways such as a safety deterrent or conditioning device. HT90 Instructions. This unique item is a directional ultrasonic heterodyning type listening device.
Listen to the amazing world of high-frequency sounds. It has many uses, both in the scientific field especially entomology to study insects, bats, other animals and fauna. Leaking air, water, gas, steam, pipes, and machinery wear are only a few of the many faults easily made detectable, potentially preventing more serious events from occurring.
It can serve as a detection device allowing one to hear animals or people walking in the woods on dry ground, or even on a wet day. A crumpling plastic bag, moving coins, a key chain, rain drops, etc. This unit opens a whole new world allowing you to listen to sounds you didn't think even existed! Its directional reception allows for the detection and general location of ultrasound that may be used as harassment.
Battery operated directional device detects sounds beyond the range of human hearing, with narrow band tuning from about 23 to 27 kHz -3db pointsallowing you to hear and pinpoint mechanical, electrical and biological sounds such as leaking gases, air, water; corona leakage; motor frictional sounds potentially including bearing wear breakdown noises; bats, insects, and other sounds of mother nature; a hunter's aid for high frequency sounds made by animals traveling through dry woods or even wet grass -- even beading water!
There are countless applications for this unit. The 12" aluminum parabolic dish increases the amount and sensitivity of collected sound increases the reception of fainter sounds, or those from a longer distanceand provides more of a directional target location. These ultrasound pain field guns and generators can be tuned to target certain animals and unwanted human intruders.
The effect does not cause injury but produces a debilitating highly discomforting feeling of nausea, disorientation and paranoia.
There are many home and personal alarms available, but none have a deterrent that can prevent or discourage an encounter quite like ultrasound. These can range from debilitating and incapacitating, to enervating fear and threatening, to sickening nausea and nerve racking paranoia…all without physical contact! Effects can vary to an extent with number of units used, installation, distances, target sensitivity, and other variables. A major part of this technology was developed in our labs for the Israeli military and now is used by other militaries including the US and Israel and peace-keepers as a deterrent to discourage and break up unruly crowd gatherings and potential riots.
See our downloads for more available data and other more effective deterrents.Frequencies used for medical diagnostic ultrasound scans extend to 10 MHz and beyond. This dog repellent ultrasonic circuit will chase away angry dogs. The main part of this circuit is a timer IC.
A timer IC is an integrated circuit chip used in a variety of timer, pulse generation, and oscillator applications.
The can be used to provide time delays, as an oscillator, and as a flip-flop element. Derivatives provide up to four timing circuits in one package.
You can use the effectively without understanding the function of each pin in detail. Frequently, the is used in astable mode to generate a continuous series of pulses, but you can also use the to make a one-shot or monostable circuit.
The can source or sink mA of output current, and is capable of driving wide range of output devices. To use this circuit adjust R3 at resonance frequency of the piezo transducer for maximum amplitude of the repeller ultrasonic sound.
At 30 KHz this can reach a value of Vpp.
Without the piezo the output voltage is around Vpp. Note: Ultrasonic frequency must be set with a dog nearby. Check out another Dog Repellent Circuit. Your are not helping to grow the number of participants on this website by posting a circuit with no values or explanation.
I'll look around the site and see if this is typical. If so, I won't return and make sure others know it was a waste of time. Hi Larzman. I just want to create a circuit i want and its still on the process. Maybe you could see other peoples project if you want.
I dont know anything about electronics but would like to build such fun stuff with my son. May be there can be videos of the physical components to use and how to go about building this over a weekend.
That would be very inetresting. Umm, im guessing this supposed to work from 2x 1. Also, u missed pin 2 u have 2 3 pins. Have u actuAlly built this circuit? It seems flawed. Hello Emmanuel!Can a high power ultrasonic dog repeller go the distance? Distance matters when faced with an aggressive dog, and effective range is influenced by the sound frequency being used.
Ultrasonic sound uses up its energy faster due to the increased number of cycles of vibration it needs to create the sound waves of ultrasonic sound. The higher the tone, the more compact the waves, the more energy is required to move the vibration through the air. The more energy needed to move the vibration through the air, the quicker friction acts on the sounds wave, reducing its energy and amplitude. Ultrasonic dog deterrents emit high-frequency tones.
These ultrasonic sounds lose their energy faster as the sound wave moves through the air. The further the signal can travel and the longer it maintains its power, the better. When dealing with an aggressive dog, distance matters. Outside there are many obstacles that can affect a sound wave such as cars, trees, tree leaves and branches, mailboxes, and so on. Ultrasonic sounds have shorter, very compact wavelengths. A high power ultrasonic dog repeller has sound waves that are more likely to be absorbed, reflected, or scattered by an object in its path.
Diffraction is the ability of a sound wave to continue around an object as it moves through a medium, like air. The sound wave cannot move around the obstacle in its path if it is smaller than the object. The sound wave quits moving forward. Because a high power ultrasonic dog repeller emits sound waves that have shorter wavelengths, there is more opportunity for the sound wave to be blocked than lower frequency sound waves, like those emitted by the Sound Defense K9 Warning Device.
The lower the frequency, the better the sound wave moves around objects.
Dog Repellent Ultrasonic Circuit
Aiming so that the sound reaches the dog is important, and since a high power ultrasonic dog repeller has a smaller beam angle, it is more difficult to aim than lower frequency sound that has a wider beam angle.
A high power ultrasonic dog repeller emits a signal that has a smaller beam angle than an audible dog deterrent. A smaller sound generator is necessary to produce the higher frequency sound.Pages: . Topic: Ultrasonic noise generator - What Hz for cats, dogs, deer???
Read times previous topic - next topic. Ultrasonic noise generator - What Hz for cats, dogs, deer??? I know there are a lot of products out there to ward off pests. I can NOT find a description of the sound that cats, dogs, and deer hate.
Certainly it will vary. I just want to be able to "say" my jack-o-lantern deters animals who will eat it. A deer ate neighbors! I already have ESP32 making the flickering light reminisent of a candle but pissed off i can't find data on ultrasonic deterence of animals. Cats: Every xxx seconds, emit a pulse of yyy hertz for zzz ms. Dogs: "" "" "" Deer: "" "" "" See what I mean? It does NOT have to be foolproof or effective. Pissing contest only. Please advise!! Re: Ultrasonic noise generator - What Hz for cats, dogs, deer???
If you want to find out what commercial products use, use a Google search phrase that contains the word 'patent', for example 'patent ultrasonic repeller Hz'. Add the animal of choice to narrow the range of results. Even there it doesn't mention the exact sound wave! This is an Arduino tech forum. Tell us the frequency and we'll be able to tell you how to produce it.Usually, the dog owners are fully aware of the problem and pass it off with the comment, dogs bark, live with it, which in turn, can lead to thoughts of doing painful things to the owners, as well.
Irresponsible neighbors who let their dogs bark all day and night risk being cited by animal control for violating local nuisance laws.
How to Make Dog Barking Preventer Circuit using High Frequency Deterance
The obvious problem with involving the authorities is destruction of good relations with neighbors. It resembles a small bird house and works amazingly well.
That article generated a great deal of reader response, and many bought the PetSafe unit, reporting back with glowing comments. As its range is limited to 75 feet, a number of readers asked if there are similar units on the market with a much longer range.
We found one, and not only did You and the Law have a chance to test it, the manufacturer sent one for a client of ours who just happens to be an animal control officer.
When I turned it on, it was as if someone flipped a switch. They all stopped barking. My work buddies looked at me as if I was a witch. With most breeds, there is an instant reaction, and the dog makes an association with this disruptive sound and barking. But these devices will not stop protective or instinctual barking, so there is no risk of the dog being silent while a burglar is breaking in.
At the present time, we know of no manufacturer of similar products with such a range. Over the past several years, a great deal of research has gone into finding non-chemical ways of eliminating or reducing rodent and insect populations.
Ultra high frequency sound in the 25, hertz range, combined with electro-magnetic technology, and using Ionic generators have all been tried, with varying degrees of success as an Internet search will reveal.BARKING DOG NEXT DOOR - HIGH FREQUENCY SOUND (More Info)
It is called the AT Pest Repeller and looks like a small, night light. I gave one to a restaurant owner, one to a friend who lives in a part of town famous for invasions of roaches, and one plugged in, here at my office.
In each instance, the difference was remarkable. I even unplugged it over a weekend to see what would happen at one location. Dennis Beaver practices law in Bakersfield and enjoys hearing from his readers. Contact Dennis Beaver. Long range ultra-sonic bark and pest control devices work animal controltechnology.
Bugs, bedbugs, rodents and cockroaches Over the past several years, a great deal of research has gone into finding non-chemical ways of eliminating or reducing rodent and insect populations. Monday morning was not pretty. Ask Dennis A Question Click here to use our handy contact form or for complete contact information. Recent Articles How to manage sarcastic people on the job or at home The psychology of being scammed Only pay for what you need Structured settlements remain excellent for accident victims Obese COVID patients and their angry doctor.
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