Scientists use vibration sensors to let blind people see things through skin touch

The press office of the Kant-Baltic Federal University in Russia said that researchers at the school are developing a device that uses so-called sensory vision to help blind people "recover their vision" through skin touch.

The working principle of the device is: a 3D camera worn on the head of a blind person scans the surrounding images, and then a small computer establishes a distance map of objects within the camera's field of view. Using a special controller and a vibration sensor, the distance map is "transmitted" "To the skin. Each element (pixel) of a 3D map has its own distance value. The smaller the distance value of the object in the pixel area, the greater the vibration felt by the skin.

In the highly developed modern industry, it has become an inevitable development trend for modern test technology to develop towards digital and informatization. The front end of the test system is the sensor, which is the soul of the entire test system and is listed as a cutting-edge technology by countries all over the world. It is the rapid development of IC technology and computer technology in recent years, which provides a good and reliable scientific and technological foundation for the development of sensors. The development of sensors is improving with each passing day, and digitization, multi-function and intelligence are important characteristics of the development of modern sensors.

Vibration sensor is one of the key components in testing technology. Its main function is to receive the mechanical quantity and convert it into electric quantity proportional to it. Because it is also an electromechanical conversion device. So we sometimes call it transducers, vibration pickups, etc.

The vibration sensor does not directly convert the original mechanical quantity to be measured into electricity, but uses the original mechanical quantity to be measured as the input quantity of the vibration sensor, which is then received by the mechanical receiving part to form another mechanical quantity suitable for transformation. , And finally converted to electricity by the electromechanical conversion part. Therefore, the working performance of a sensor is determined by the working performance of the mechanical receiving part and the electromechanical transforming part.