The microphone sensor is equivalent to a microphone. It is used to receive sound waves and display vibration images of sound, but cannot measure the intensity of noise. The microphone sensor has a built-in capacitive electret microphone that is very sensitive to sound. The electret film in a sound wave vibrating microphone causes a change in capacitance and generates a small voltage corresponding to the change. Then convert the voltage into a voltage of 0-5V, which is received by the data collector through A/D conversion and transmitted to the computer. Let's take a look at the application of microphone sensors.
As is well known, the emergence of sensors has changed our lives
and created convenience for everyone's lives. We have seen
various types of sensors, from thermal sensors, photosensitive
components, gas sensors to acoustic sensors, and so on. The
powerful and magical microphone sensor is like a device equipped
with sound sensitive components that can respond to our language
accordingly. Do you think it's magical and interesting? At
present, microphone sensor technology is constantly improving
and innovating, but it has a wide variety of types, complex
functions, and powerful functions. Many people know very little
about microphone sensors, let alone their application range.
Today, let's explain the application of microphone sensors.
The microphone sensor uses an electric microphone with a
frequency response similar to that of the human ear. Signal
transmission method: The circuit amplifies the signal and
transmits it to the British Telecom interface. In fact, the
signal is sent to the data collector through two different
lines. One signal passes through the low-voltage input line at
around 2.5V, and the other signal passes through the voltage
input line at around 0V.
The application of microphone sensors in daily life. In addition
to portal access control, it can also be used to monitor the
areas where intruders appear. The outstanding advantage of
microphone sensors is that they can be used to identify the
cause of alarms. In addition, microphone sensors are involved in
car anti-theft and aviation detection, and sound sensors have
made significant contributions to the improvement of sonar
systems. Various voice switches also have high technical
content.
