Catalog excerpts
Infrared Temperature Sensor Module
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Infrared Temperature Sensor Module Sensor Module Product Overview The MTP 31A infrared temperature sensor module integrates a MEMS infrared thermopile temperature sensor, a low-noise instrumentation amplifier (PGA), a 12-bit Σ-Δ ADC, and a low-power MCU for digital operation and temperature calibration. It supports calibration of the temperature drift of the sensor's zero point and sensitivity, and the digital calibration accuracy can be within 0.1°C. The calibration parameters are stored in the MCU's non-volatile memory and are calculated in real time by the built-in DSP.MemsFrontier's...
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Infrared Temperature Sensor Module Sensor Module Main Features and Applications Main Features ￮ MEMS thermopile technology Body temperature mode compensation algorithm ＜3.5 mA ultra-low power consumption Complete factory calibration (+/- 0.3C for body temperature mode) Remote temperature measurement (DS ratio 4:1) UART and I2C digital output Excellent long-term stability Face recognition machine Attendance machine Temperature measuring door Security check
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Infrared Temperature Sensor Module Sensor Module Specifications MTP 31A Temperature Range Accuracy body temperature mode 32~42.5 ℃ object (surface) temperature mode 0~80 ℃ ±0.3 ℃ for body temperature mode ±1 ℃ /±1% m.v for object (surface) temperature mode Digital Resolution Measurement Period Supply Voltage Operating Current Output Signal Communication Level Temperature Compensation Viewing Angle Spectral Response Operating Temperature Range Operating Humidity Range Note 1: The measurement period can be set. Note 2: For 50% signal strength, refer to the left view-signal strength graph.
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Infrared Temperature Sensor Module Sensor Module Serial Communication Protocol Baud Rate Check Digit Packet Structure Packet header--MSB--LSB--SUM--Ending Character The header of the data packet is the command symbol: 0x4C, 0x4D, 0x66, 0x53, 0x54 MSB: High byte with 16bit data LSB: Low byte with 16bit data SUM: packet header + MSB + LSB (SUM is the low byte of the sum) Ending Character: 0x0D Read the temperature value of the target object with the value of the emission coefficient stored in the module Manually set the emission coefficient value, read the temperature value of the target...
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Infrared Temperature Sensor Module Sensor Module Functioning Example 1.Use the emission coefficient value stored in the module to read the temperature value of the target object. Example The PC sends commands through the serial port: 0x4C, 0xAA, 0x55, 0x4B, 0x0D The module returns data through the serial port: 0x4C, 0x14, 0x2A, 0x8A, 0x0D 0x14 and 0x2A are the measured target temperature data, the calculation method is as follows: a) 0x142A is converted into a floating point number to get 5162; b) 5162/16 = 322.625; c) 322.625-273.15 = 49.475; The target temperature is 49.475°C 2. Manually...
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Infrared Temperature Sensor Module Sensor Module 4. Change the emission coefficient value stored in the module The emission coefficient value stored in the module to be written is placed in the LSB byte, and the data range is 10~100 (0x0A~0x64, representing the emissivity 0.10~1.00), other setting values out of the range are invalid. The default emission coefficient value of the module is 95, that is, the emission rate is 0.95.The module returns the actually written emission coefficient value. Example 1 The PC sends commands through the serial port: 0x53, 0xAA, 0x64, 0x61, 0x0D (The...
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