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Gravity: Non-contact IR Temeperature Sensor For Arduino
INTRODUCTION We can divide temperature measurement in to two types: contact and non-contact. Contact measurement can only accur...
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INTRODUCTION
We can divide temperature measurement in to two types: contact and non-contact. Contact measurement can only accurately measure temperature when the testing object and the sensor reach thermal equilibrium. This can mean longer response times and reading inaccuracies offset by ambient temperature. By contrast, non-contact measurement uses infra-red radiation to measure the temperature and does not require a direct touch. Additionally, this method of measurement can be read quickly and accurately. In recent years non-contact measurement methods have been used for medical, environmental monitoring, home automation, automotive electronic, aerospace and military applications. Our latest infrared temperature measurement module is the MLX90614. This module measures the surface temperature by detecting infrared radiation energy and wavelength distribution. The IR temperature probe consists of an optical system, photoelectric detector, amplifier, signal processing and output module. The optical system collects the infrared radiation in its field of view and the infrared radiation energy is converted in to corresponding electrical signals when converging on the photoelectric detector. After being processed by the amplifier and signal processing circuit, the signal is converted in to a temperature value. The MLX90614 is self calibrating and has a low noise amplifier integrated in to the signal processing chip. The chip itself is a 17 bit ADC and DSP device, giving accurate and reliable results.
SPECIFICATION
- Operating Voltage: 3.3V - 5V
- Operating Current: 1.2mA
- Temperature: -70.01°C to +382.19°C, (0.01 °C resolution)
- Interface Type: I2C
- Interface Line Sequence: VCC, GND, SCL, SDA
- Dimensions: 31.5*18 mm/1.24 x 0.7 inches
- Weight: 15g
DOCUMENTS
SHIPPING LIST
- on-contact IR Thermometer Sensor x1
- JST PH2.0 4-Pin cable x1
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- DSP
- Digital signal processing means using software or hardware to analyse or modify signals such as audio, vibration, or sensor readings. A board suited to DSP is useful when a project needs fast maths for filtering, synthesis, or real-time signal analysis.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- VCC
- VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.
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Supplier page — dfrobot.com
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SEN0206 ir thermometer sensor schematics 1.0
Schematic · 44.6 KB · Click any page to view full size
SEN0206 ir thermometer sensor datasheet 1.0
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