Air-Filtering Mask With Actuating Device For Sensor Airflow
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Solution Overview
Problem
Portable electronic devices equipped with environmental sensors face challenges in maintaining consistent airflow for effective air quality monitoring, leading to long response times and inadequate real-time monitoring due to reliance on natural convection.
Innovation Solution
An air-filtering protection device integrated with an actuating and sensing system that enhances air circulation within a closed space, using a filtering mask and an actuating and sensing device with sensors, actuators, microprocessors, and data transceivers to monitor and regulate air quality, issuing notifications for mask replacement and transmitting data for real-time air quality information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If environmental sensor is integrated into portable electronic device and relies on natural convection for airflow, then device portability is maintained, but monitoring sensitivity and precision deteriorate due to inconsistent airflow
Solution Approach 1:
The patent introduces a dynamic airflow control mechanism with adjustable flow rates to replace static natural convection. The system can dynamically adjust air intake and exhaust flow rates based on monitoring needs, ensuring consistent airflow to the sensor while maintaining device portability.
Solution Approach 2:
The patent introduces an intermediary airflow control system between the external environment and the sensor. This intermediary mechanism (including air intake channels, exhaust channels, and flow control components) ensures that the sensor receives consistent, controlled airflow regardless of external convection conditions, thereby improving measurement precision while keeping the device portable.
2Device complexity
If environmental sensor relies on naturally occurring convection for airflow, then device structure remains simple, but response time increases and real-time monitoring cannot be achieved
Solution Approach 1:
The system transitions from passive static convection to active dynamic airflow control. The airflow control mechanism can rapidly adjust flow rates in response to detected air quality changes, significantly reducing response time while maintaining manageable device complexity through integrated design.
Solution Approach 2:
The patent implements continuous airflow circulation through the closed space formed by the mask, ensuring that the sensor continuously receives fresh air samples. This continuous action eliminates dead zones and ensures real-time monitoring capability, with the airflow system operating continuously to maintain prompt sensor response.
3Measurement precision
If air circulation in closed space is enhanced by actuating device, then air exchange efficiency and monitoring precision are improved, but device complexity and energy consumption increase
Solution Approach 1:
The actuating device serves multiple functions: it drives airflow for sensor monitoring, adjusts air circulation patterns, controls exhaust flow, and can operate in different modes (continuous or intermittent) based on air quality conditions. This multi-functionality reduces the need for separate dedicated components, managing device complexity while improving monitoring precision.
Solution Approach 2:
The system changes operational parameters (airflow rate, circulation speed, exhaust volume) dynamically based on air quality measurements and environmental conditions. This parameter adjustment allows the system to optimize precision while managing energy consumption and complexity by operating at lower power levels when high precision is not critical.
4Reliability
If air is discharged in different flow rates to regulate air quality inside mask, then air quality monitoring effectiveness is improved, but energy consumption increases
Solution Approach 1:
The system employs periodic or intermittent airflow adjustment rather than continuous high-rate discharge. The actuating device operates in cycles, increasing airflow when air quality deteriorates and reducing or pausing operation when air quality is acceptable, thereby maintaining monitoring effectiveness while significantly reducing overall energy consumption.
Solution Approach 2:
The system dynamically changes airflow rate parameters based on real-time air quality data. When pollution levels are low, the system operates at minimal energy consumption. When pollution levels exceed thresholds, the system increases discharge flow rates to rapidly exchange air, then reduces flow rates after improvement, optimizing the balance between reliability and energy use.
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 ensures precise and timely air quality monitoring, improved air exchange efficiency, and immediate user notification, enabling effective prevention of air pollution's health impacts by enhancing sensor response times and providing real-time air quality data.
Implementation Method 1
The actuating device is enabled to transport air, so that the air flows through the at least one guiding channel and flows through the at least one sensor
Implementation Method 2
monitoring carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5
Data Source
AI summary
An air-filtering protection device includes a filtering mask and an actuating and sensing device. The filtering mask is for being worn to filter air. The actuating and sensing device is mounted and positioned on the filtering mask and includes at least one sensor, at least one actuating device, a microprocessor, a power controller and a data transceiver. The at least one actuating device is disposed on one side of the at least one sensor and includes at least one guiding channel. The actuating device is enabled to transport air to flow toward the sensor through the guiding channel so as to make the air sensed by the sensor.