스펙트럼 자외선 UVA/B/C 센서 -AS7331
(UV 5 CLICK)
개요
- 본 제품은 스펙트럼 자외선 UVA/B/C 센서 -AS7331 모듈입니다.
- AS7331 센서를 탑재하고 있으며 UVA, UVB, UVC 의 자외선을 측정할 수 있는 제품입니다.
- 3.3V로 동작하며, I2C 인터페이스를 가지고 있습니다.
특징
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HOW DOES IT WORK?
UV 5 Click is based on the AS7331, a spectral UVA/B/C sensor from ams OSRAM. It converts optical radiation signals to a digital result by three photodiodes of three separated UVA, UVB, and UVC channels. This way, the sensor realizes a continuous or triggered measurement. You can adjust irradiance responsivity via gain, conversion time, and internal clock frequency to affect sensitivity, full-scale range, and LSB. The gain comes in a range of 12 steps divided by a factor of two for each step, while the conversion time is internally controlled over a range of 15 steps, again by a factor of two for each step.
The AS7331 sensor operates in two different states. Configuration state enables access to the configuration settings when a measurement is impossible. Measurement state has several modes: continuous measurement mode, command measurement mode, synchronous measurement mode, and synchronous measurement start and end mode. You define the measurement mode that the sensor over the software will perform. In addition, the sensor has power-saving options, such as power down and standby.
UV 5 Click uses a standard 2-Wire I2C interface to communicate with the host MCU, supporting a bit rate of up to 400kbit/s. Select an I2C address over two ADDR SEL jumpers (0 is set by default). For externally triggered start or start and stop of the measurement, you can synchronize the SYNC input of the AS7331, which is an externally controlled conversion input. The sensor will notify the end of each conversion over the RDY pin.
This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.
SPECIFICATIONS
Type Optical Applications Can be used for the development of applications for UV disinfection, UV-curving, partial discharge monitoring, analytics (water monitoring, microorganism contaminations), phototherapy, skin diagnostics, horticulture, and more On-board modules AS7331 - spectral UVA/B/C sensor from ams OSRAM Key Features Separated UVA, UVB, and UVC radiation measurements, UV-radiation measurement from low to high radiation conditions, selectable I2C address, temperature compensation for measurement results, and more Interface I2C ClickID Yes Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V