Feature: Sensor Technology
The Power of Simplicity and Reliability In his latest project, Syme has successfully integrated various components into a seamless, ‘fit and forget’ solution that monitors water levels, air temperature and humidity with remarkable precision. Te backbone of this sensor system is the Dragino Technology Co., Limited kit, supplied by UKIoT, which Syme commends for its ease of use and reliability. Te sensor is designed to be a simple,
standalone device, requiring minimal maintenance once deployed. It features a hot- swappable sensor pack that includes options for air temperature, humidity and water temperature sensors. Te sensors are housed in a Stevenson screen-style enclosure, ensuring durability
and optimal environmental protection. Te ability to hot-swap sensors without disrupting the overall system is a standout feature, enabling quick and easy upgrades or replacements in the field.
Key Components and Specifications Te water level sensor system comprises several high-performance components, each selected for its specific capabilities: • Dragino RS485-NB and NBIoT Modules: Tese modules form the core communication system, ensuring reliable data transmission via narrowband IoT (NB-IoT). Te modules are also integral to over-the-air (OTA) firmware updates, facilitated by the Seeed Studio Xiao ESP32-C3 sensor interface.
Revolutionising Environmental
Monitoring By the technical writers at Fibox, Enclosure specialists
E
nvironmental monitoring is a critical aspect of protecting and managing natural resources, and the advancements in sensor technology are enabling more efficient, reliable and accessible data collection. Bryce Syme, Senior Instrumentation Engineer at the Scottish Environment Protection
Agency (SEPA), has been at the forefront of this innovation, recently developing a cutting-edge water level sensor that promises to enhance the agency's environmental monitoring capabilities.
16 October 2024
www.electronicsworld.co.uk
• MaxBotix MBX7388 Level Sensor: Tis ultrasonic sensor offers a 0-10 meter range with a 1mm resolution, providing precise water level measurements. Syme notes the sensor’s outstanding performance, particularly its ability to deliver smooth and accurate distance values, making it a critical part of the system's success.
• Sensirion SHT85 Sensor: For air temperature and humidity measurements, the SHT85 offers high accuracy and reliability, ensuring that environmental data is consistently precise.
• Seeed Studio Xiao ESP32-C3: Tis microcontroller handles sensor readings and data processing, ensuring that the system operates smoothly and efficiently. It also plays a key role in managing OTA updates, allowing for easy firmware upgrades in the field.
• Fibox TEMPO TA 131007 Enclosure: Te sensor system is housed in a robust Fibox enclosure, which provides exceptional protection against harsh environmental conditions.
• DKCELL 6600mAh 18650 Rechargeable Cell and 5W PV Panel: Powering the entire system is a rechargeable battery supported by a 5W solar panel, ensuring that the sensor remains operational without the need for frequent battery changes, even in remote locations.
• MAXIM DS18B20 Water Temperature Sensor: Tis sensor is included as an optional component for monitoring water temperature, adding another layer of environmental data collection.
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