Being bitten by a dog, male students make extremely effective dog chase devices

After studying, Minh surveyed the practical situation and had a good result: 'I have conducted surveys and conducted tests 3 times on the dogs at Le Van Long's house (Bac Ninh) for good results. . At the sound threshold of 40 kHz (120 dB), the dogs react, step back, 9 children run . ".

From the experience of being bitten by himself, Nguyen Tan Minh - VNU High School for Natural Sciences, VNU has researched and built "smart device to detect barking and chasing dogs - DS Dog Security". My idea is to persuade the School Board to choose to participate in "National Science and Technology Research Student".

Nguyen Tan Minh - High School of Natural Science, Hanoi University.

Ideas from bites

Nguyen Tan Minh has been chased twice by a dog when he was 4 years old and once bitten by a dog at 9 years old. At that time, my family and the whole family had very worried dogs to follow the dog with rabies. Since then, I was also very scared when I approached the dog.

But, it is also the motivation for Minh to have an idea to study equipment to prevent dog attacks or drive away dogs.

Small in shape, quite responsive in communication, but knowing our purpose is to write articles about my scientific research on newspapers to replicate the model for young people to study, Minh modestly said : "I can't do anything, just hope that our lessons will be used in practice to help people".

Pleading forever, he only "revealed" the process of embarking on his topic.

Minh said: "Currently there are 2 devices that use ultrasound on the market but there are disadvantages: fixed one place, fairly large size and used mechanical button press. So my goal is to build Smart device detects barking and chasing dogs, convenient device in use, child-friendly shape.

This device is convenient for users everywhere. At the same time, the device can integrate other features such as locating users in finding lost children, generating SOS signals to support device users. "

The dogs retreated and ran away

In Vietnam, the law regulates the management of pets, whereby dog ​​owners must be responsible for regularly chasing dogs, not letting loose, letting dogs bite people.

However, the observance of the above regulations in the people is very limited. In rural areas, people tend to drop free dogs. Even in big cities, when walking a dog at parks or in crowded places, dog owners are often not interested in paying attention to wearing muzzles, or dog chains carefully.

Minh's device after research.

It is also for that reason that every year a lot of dog bites have happened that affect the aesthetics, health and psychology of victims.

After studying, Minh surveyed the practical situation and had a good result: "I have investigated the ability to play sound on many frequencies of the device in the laboratory and conducted the test 3 times on The dogs in Le Van Long's house (Bac Ninh) gave good results, at the sound threshold of 40 kHz (120 dB), the dogs reacted, stepped back, 9 children fled . ".

"Imagine a strange dog suddenly rushing towards you, barking loudly and wanting to bite you, so what should you do then? There are many ways to handle this situation effectively, but also There are several ways to make things worse.

Dogs can feel your fear, so being agitated that leads to running or screaming can make them feel more confident in attacking you.

Worse is that you show that you want to attack them will lead to very serious consequences. Therefore, in the event of a dog attack, the DS Dog Security smart device will help you effectively defend " - Minh shared.

The new point of the device, in addition to being manually activated human protection mode, the device can also operate automatically through the use of a microphone mounted on the device to detect dogs.

After construction, the equipment is tested to investigate and evaluate the ability to emit sound waves according to the desired frequency. To make it easier to survey at different frequencies, Minh built a software on the computer that helps control the frequency that the device emits directly on the computer.

After studying, Minh surveyed the practical situation and had a good result: "I have investigated the ability to play sound on many frequencies of the device in the laboratory and conducted the test 3 times on The dogs in Le Van Long's house (Bac Ninh) gave good results, at the sound threshold of 40 kHz (120 dB), the dogs reacted, stepped back, 9 children fled . ".

Minh added: "In the future, this device will develop more features such as integrating multiple ultrasonic frequencies ., such as emergency SOS call when there is a signal, install GPS positioning to control User positions and models will be more diverse ".