This type of sensor detects pressure around the earth which is bery much useful to develop altimeter as well as barometer. LPS25H pressure sensor from ST-Microelectronics is one such IoT sensing device. It is used for GPS based navigation.
Accelerometer and Gyroscope
Accelerometer is used to detect vibration,tilt and linear acceleration. It is used for implementation of pedometer,levelling,vibration alert,anti-theft and more. Gyroscope is used to measure angular velocity. Gyroscope is mainly used in 3D mouse,games and athlete training.
InvenSense Inc. has developed ICM-20628 which is low power 6 axis combined accelerometer and gyroscope solution.
It is used to control performance of the IoT device at varied temperatures. One example of temperature sensor is the ADT7320. It is digital temperature sensor with range from -40 degreeC to +150 degreeC. It is interfaced directly with microcontroller in a IoT device.
Analog to Digital Converter
AD7176-2 from Analog Devices is used as analog to digital converter It works on very low bandwidth input signals originated from sensors. It has faster settling time. It is very accurate and has high resolution sigma-delta ADC.
Silicon Labs' optical sensor family enables sensing UV Index, ambient light, long range proximity, heart rate/pulse oximetry and motion with 2D or 3D gestures. Model series Si114x, Si1132, Si1120 and Si1102 are sensors from Silicon Labs used as infrared proximity sensors.
Silicon Labs has 8bit and 32bit Microcontrollers which are used as capacitive touch sense applications. viz. sliders, wheels, touch buttons, liquid level sensing and capacitive proximity sensing.
Similar to temperature sensor it is also used to control performance of the device. HTU21D from Measurement Specialties is digital humidity sensor. The NPA-700 series of humidity sensor from GE sensing provides digital output data using the industry-standard I2C protocol.
Si70xx series from Silicon Laboratories Inc. is also used as humidity and temperature sensors.
