VT
Type IR-UART
Description： VT-IR-UART is a digital infrared temperature measurement module, integrating self-developed MEMS thermopile infrared sensor and 32-bit embedded microprocessor chip, equipped with low noise amplifier, 18-bit A/D converter and DSP Components such as the processing unit perform digital output through the IIC interface, and the accuracy of human body temperature measurement can reach 0.2°C.
Features： 1.MEMS thermopile infrared sensor
2.Built-in DSP digital signal processor
3.Low power consumption and energy-saving working mode
4.Factory calibrated temperature range and accuracy:
Human body temperature measurement: 29°C~ 40°C (±0.2°C)
Object temperature measurement:0°C ~ 100°C (±1°C)
5.Applicable to various packages in different application fields
6.Easy system integration and lower application cost
7.UART digital bus interface
8.(3V~3.3V) input voltage
◆Product application
-High precision non-contact temperature measurement
-Medical body temperature measurement
-Vehicle air conditioning control and glass anti-fog security inspection
-Temperature control of industrial mobile components
-Temperature control of printers and photocopiers
-Home appliance temperature control, security monitoring
-Moving object detection, thermal relay alarm
-Air conditioning in residential, commercial and industrial buildings temperature sensor
◆Product parameters
| Parameters | Parameter Value | Description |
| Temperature range | 29 ℃ ~ 40 ℃ (human body temperature measurement) 0 ℃ ~ 100 ℃ (object temperature measurement) |
|
| Range of working temperature | 0 ℃ ～ 65 ℃ | |
| Temperature measurement accuracy | ± 0.2 ℃ (human body temperature measurement) ± 1 ℃ (object temperature measurement) |
A sigma statistic |
| Input working voltage | 3 V ～ 3.3 V | |
| Temperature measurement field of view FOV | 90° | Can be customized |
| Geometry | 14 mm * 36 mm | |
| Interface pin | 1.GND (ground) 2.TXD (UART data transmission) 3.RXD/SDA (UART data reception/IIC data exchange) 4.SCK (IIC clock input) 5.VDD (3 V to 3.3 V DC input) |
Preset UART bus, IIC can be customized as required |
◆Module structure and application diagram
◆Application Diagram
◆Precautions
1.In the application design, it should be noted that the above accuracy can only be
guaranteed when the sensor is in thermal equilibrium. The following factors will
cause temperature differences: the thermal electrons on the back of the sensor,
the heater/cooler on the back of the sensor or the sensor The thermal balance of
the detector is broken in a short time.
2.The sensor has a certain measurement field of view (FOV), and the application
design should pay attention to the temperature of the measured object in the field of
view is basically uniform. The sensor window is integrated in the package against
the effects of ambient light with optical filters that block visible and near-infrared
radiation (which transmits long wavelengths). The wavelength passband of the filter is from 5.5 μm to 14 μm.
3.The VT-IR- UART infrared temperature measurement module supports the user's
secondary development. The measurement results, working status and faults of the module can be read by the digital bus. At the same time, the measurement method and DSP function can be read by the user through the bus. set up.