Wireless Pressure Sensing for Retrofitted Ventilation Flow Control
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Solution Overview
Problem
Existing ventilation systems, especially those installed later, face difficulties in regulating air flows effectively, leading to unpleasant air distributions and inefficient energy consumption, particularly due to the lack of precise coordination between inlet and outlet air flows.
Innovation Solution
A pressure sensor system comprising a detection device for air pressure and temperature, a computing unit, and a wireless interface that allows for the wireless transfer of data to a control device, enabling adaptive adjustment of ventilation settings based on detected flow conditions, and allowing for the integration with existing systems through retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ventilation devices are installed later in buildings, then retrofitting flexibility is improved, but coordination between inlet and outlet air flows deteriorates
Solution Approach 1:
The patent replaces complex mechanical flow measurement and coordination systems with electronic pressure sensors and wireless communication. The pressure sensors detect air flow conditions and transmit data wirelessly to control devices, eliminating the need for complex mechanical coordination systems while enabling precise control of inlet and outlet air flows in retrofitted buildings.
Solution Approach 2:
The patent introduces wireless communication as an intermediary between pressure sensors and control devices. This intermediary enables data transfer without physical wiring, simplifying retrofitting while maintaining precise coordination capability between different ventilation components through electronic signaling.
2Area of stationary object
If multiple inlets are provided for central air suction, then ventilation coverage is improved, but regulation difficulty increases
Solution Approach 1:
The patent implements self-regulating ventilation through pressure sensors that automatically detect air flow conditions at multiple inlets and transmit data to control devices. The system self-adjusts without requiring complex manual regulation mechanisms, as the electronic sensors and controllers automatically coordinate the multiple inlet points based on detected pressure differentials.
Solution Approach 2:
The patent uses pressure differential measurements as key parameters to regulate multiple inlet points. By monitoring and adjusting based on pressure parameters rather than complex mechanical settings, the system simplifies the regulation of multiple inlets while maintaining effective ventilation coverage across the building.
3Ease of operation
If adjustable outlets and speed-controlled fans are used, then flow coordination is improved, but device complexity increases
Solution Approach 1:
The patent replaces mechanical adjustment mechanisms for outlets and fans with electronic pressure sensing and wireless control systems. Pressure sensors detect flow conditions and transmit data wirelessly to control devices that adjust ventilation parameters, eliminating complex mechanical linkages while achieving superior flow coordination through electronic feedback control.
4Ease of manufacture
If wireless pressure sensors are deployed, then installation simplicity is improved, but data transfer reliability must be maintained
Solution Approach 1:
The patent uses wireless communication as an intermediary to transfer data from pressure sensors to control devices without physical wiring. This intermediary enables simple installation by eliminating cable routing while maintaining data transfer reliability through wireless protocols and signal processing that compensate for potential interference.
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
This solution provides a flexible and efficient means to regulate ventilation states by accurately detecting and adapting to flow situations, minimizing energy consumption and enhancing comfort, while being scalable and easy to install, even in existing systems.
Implementation Method 1
detect flow conditions in an indoor space via a measurement of pressure differences
Implementation Method 2
detection device for ascertaining air pressure and temperature
Data Source
AI summary
A pressure sensor includes: a detection device for ascertaining air pressure and temperature; a computing unit; and a wireless interface. With the aid of the wireless interface, the pressure sensor data which represent a flow state in the surroundings of the pressure sensor are transferred wirelessly to a central control device. With the aid of the central control device, final control elements of a ventilation device are set.