IoT Radon Detection Device with Pressure-Based Ventilation Control
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Solution Overview
Problem
Current indoor radon detection and mitigation systems often fail to maintain a balance between indoor air quality, thermal comfort, and energy efficiency, leading to suboptimal performance when one factor is optimized at the expense of others, and they lack real-time management capabilities to effectively reduce radon exposure in indoor environments.
Innovation Solution
An IoT device equipped with radon gas sensors, differential pressure sensors, and a microcontroller that activates ventilation devices to reduce radon concentration when thresholds are exceeded, while also considering thermal comfort and energy efficiency, using communication modules like LoRaWAN and Wi-Fi for data transmission and incorporating sensors for additional air quality parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If ventilation devices are activated to reduce radon concentration, then radon exposure is reduced, but energy efficiency deteriorates
Solution Approach 1:
The system continuously monitors radon concentration levels and differential pressure, using this feedback to intelligently control ventilation device activation. Ventilation is only activated when radon levels exceed thresholds and pressure conditions are favorable, avoiding unnecessary energy consumption while maintaining radon protection.
Solution Approach 2:
The system changes operational parameters dynamically by adjusting ventilation activation based on real-time radon concentration measurements and pressure differential conditions. This allows the system to optimize between radon reduction and energy consumption by activating ventilation only when necessary and when pressure conditions favor efficient operation.
2Object-affected harmful factors
If manual ventilation procedures are implemented, then radon concentration is reduced, but thermal comfort deteriorates
Solution Approach 1:
The system uses real-time feedback from radon sensors and pressure sensors to determine when ventilation is necessary, avoiding unnecessary ventilation events that would compromise thermal comfort. The system monitors environmental conditions and only triggers ventilation when radon levels genuinely require mitigation.
Solution Approach 2:
The automated system performs radon mitigation without requiring manual human intervention, eliminating the need for occupants to open windows or doors for ventilation. This self-service approach maintains thermal comfort by using automated, controlled ventilation only when necessary, rather than relying on manual procedures that disrupt indoor environment stability.
3Measurement precision
If multiple sensors are used for measurement, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system combines multiple sensing functions (radon detection and differential pressure measurement) into a single integrated device with a unified microcontroller. This merging approach maintains measurement precision by incorporating both sensor types while reducing overall device complexity compared to using separate standalone devices for each measurement function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces radon exposure by actively managing indoor air quality, thermal comfort, and energy efficiency in real-time, maintaining a balance between these factors to promote occupant health and quality of life, with precise measurement and minimal error through the use of a single differential pressure sensor.
Implementation Method 1
a radon gas sensor... for measuring a radon concentration of radon gas in an indoor environment
Implementation Method 2
a differential pressure sensor for measuring a differential pressure between an indoor atmospheric pressure and an outdoor atmospheric pressure
Implementation Method 3
When the indoor radon threshold is exceeded... mechanical ventilation to reduce indoor radon concentration
Data Source
AI summary
The present application discloses a device for detecting and reducing radon concentration in an indoor environment. This device comprises at least one radon gas sensor and, at least one differential pressure sensor for measuring the difference between the indoor and outdoor atmospheric pressures, wherein both sensors are connected to a microcontroller configured to perform the pre-processing and aggregation of the data obtained by said sensors. To reduce radon levels, it triggers at least one physical actuator to activate a ventilation device for reducing the radon concentration in an indoor environment when indoor radon concentration is above a first predetermined threshold or when indoor radon concentration is above a second predetermined threshold and the differential pressure is negative.