Sensor series introduction three (sound sensor, gas sensor, brightness sensor)

A Sound Sensor

A sound sensor acts as a microphone (microphone). It is used to receive sound waves and display a vibrating image of the sound, but it is not possible to measure the intensity of the noise. The sensor incorporates a sound-sensitive capacitive electret microphone. The sound waves vibrate the electret film in the microphone, causing a change in capacitance and a small voltage corresponding to the change. This voltage is then converted to a voltage of 0-5V, which is accepted by the data collector via A/D conversion and transmitted to the computer.

Sensor Series Introduction III (Sound Sensor, Gas Sensor, Brightness sensor) work is mainly used for voice control modules. The voice-activated switch in the corridor generally uses this module to switch the lights.

Two Gas Sensors

A gas sensor is a transducer that converts a gas volume fraction into a corresponding electrical signal. The probe conditioned the gas sample through a gas sensor, typically including filtering out impurities and interfering gases, drying or cooling the meter display portion. A gas sensor is a device that converts information such as the composition and concentration of a gas into information that can be used by people, instruments, computers, and the like! Gas sensors are generally classified as a type of chemical sensor, although this classification is not necessarily scientific.

sensor series introduction three (sound sensor, gas sensor, Brightness sensor)

Common 9 gas sensors include:

MQ-2

Smoke gas sensor

MQ-3

Alcohol Sensor

MQ-4

Methane Sensor

MQ-5

Liquefied Gas Natural Gas City Gas Sensor

MQ-6

Isobutane Propane Sensor

MQ-7

Carbon Monoxide Sensor Module

MQ-8

Hydrogen Sensor

MQ-9

Carbon monoxide combustible gas sensor

MQ-135

Air Quality Sensors

Three Brightness Sensors

Brightness sensors are sensors that sense the brightness and convert them into usable output signals.

sensor series introduction three (sound sensor, gas sensor, Brightness sensor) Detects the brightness and light intensity of the surrounding environment.