The "capturer" of physical information, specialized in real-time collection of diverse environmental data such as temperature, pressure, light intensity, and motion, converting them into high-precision electrical signals. Through the integration of MEMS (Micro-Electro-Mechanical Systems) technology and intelligent algorithms, they achieve miniaturization, low power consumption, and self-calibration capabilities, widely used in smartphones, wearable devices, industrial monitoring, and autonomous driving. Facing complex environments, their core technologies focus on anti-interference design, multi-modal data fusion, and edge computing integration. In the future, with the explosion of AIoT, sensor chips will evolve toward higher sensitivity and intelligence, becoming the "source of data" in the era of ubiquitous connectivity.
- Sensor Chips
Physical Quantity Sensors
- 01 Temperature SensorsDetect temperature changes
Representative products: Thermocouples (Type K, J), RTD (Platinum Resistance), Digital Temperature Sensors (DS18B20)
Features: Thermocouples: Wide temperature range (-200°C~1800°C), fast response
DS18B20: High precision (±0.5°C), supports single-wire digital communication
Applications: Air conditioning temperature control, automotive engine cooling systems, cold chain logistics monitoring - 02 Pressure SensorsMeasure gas/liquid pressure
Representative products: Piezoresistive (Bosch BMP280), Capacitive (TE Connectivity)
Features: Range: 0~100kPa (air pressure) to 0~100MPa (industrial)
BMP280: Integrated temperature compensation, accuracy ±0.12hPa
Applications: Automotive tire pressure monitoring (TPMS), blood pressure monitors, industrial pipeline pressure monitoring - 03 AccelerometersDetect linear acceleration and tilt angles
Representative products: MEMS Accelerometer (ST LIS3DH)
Features: Range: ±2g~±16g, resolution up to 0.001g
Supports 3-axis detection, low power consumption (μA level)
Applications: Smartphone gravity sensing, drone attitude control, automotive airbag triggering
Chemical & Biological Sensors
Gas Sensors
Function
Detect specific gas concentrations (e.g., CO, methane)
Representative Products
Metal Oxide Semiconductor (Figaro TGS2600)
Electrochemical Sensors (Alphasense OX-B4)
Features
TGS2600: Detects CO, smoke, response time < 30 seconds.
Applications
Home gas alarms, industrial exhaust monitoring, medical anesthesia machines.
Biosensors
Function
Detect biological molecules (e.g., glucose, DNA)
Representative Products
Glucose meter chips (Roche Elecsys), Biochips (Illumina)
Features
Glucose meter: Accuracy ±15%, response time < 5 seconds.
Biochips
High-throughput detection (tens of thousands of genes)
Applications
Diabetes monitoring, gene sequencing, pathogen rapid detection
Optical Sensors
- 01 Image SensorsConvert light signals into digital image data
Representative products: CMOS Image Sensors (Sony IMX686), CCD
Features: Pixels: Millions to hundreds of millions, dynamic range up to 120dB
IMX686: 64MP, supports 4K video recording
Applications: Smartphone cameras, security surveillance, medical endoscopes. - 02 Photoelectric SensorsDetect light intensity or presence
Representative products: Photodiodes (Hamamatsu S1223), Infrared Sensors (Sharp GP2Y0A21YK0F)
Features: Response wavelength: Visible light (400~700nm) to infrared (850~940nm) - 03 Infrared SensorsDetection range 0~80cm, accuracy ±10%.
Applications: Automatic lighting control (corridor lights), fiber optic communication, proximity detection (phone screen off)
Other Sensor Types
Humidity Sensors
Function
Measure air relative humidity (RH)
Representative Products
Capacitive (Sensirion SHT31)
Features
Accuracy ±1.8% RH, response time < 20 seconds
Applications
Smart home (humidifier control), weather stations
Magnetic Sensors
Function
Detect magnetic field strength or direction
Representative Products
Hall Sensors (Allegro A3144), Magnetoresistive Sensors (Honeywell HMC5883L)
Features
A3144: Switch type, detects 0.1~0.5mT magnetic field
HMC5883L: 3-axis digital compass, accuracy
±0.5°
Applications
Motor speed detection, smartphone compasses, security door switches