Ventilation system
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Solution Overview
Problem
Existing ventilation systems require multiple air quality sensors for each ventilation device, increasing complexity and cost, while also posing challenges in efficiently controlling fan operations based on shared detection signals across multiple units.
Innovation Solution
A ventilation system design where a single carbon dioxide concentration sensor is shared among multiple ventilation devices, with a transmitter-receiver system allowing detection signals to be transmitted and controlled by a central unit, enabling coordinated fan operation and reducing sensor redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sensor is shared among multiple ventilation devices, then device complexity and cost are reduced, but control coordination between devices becomes more difficult
Solution Approach 1:
Multiple ventilation devices share a single air quality sensor, merging the sensing function across devices. The transmitter-receiver system enables one sensor to serve multiple control units, reducing overall system complexity and cost while maintaining coordinated control through shared detection signals.
Solution Approach 2:
The single sensor performs a universal function for multiple ventilation devices, detecting air quality parameters that inform control decisions for all devices. The transmitter-receiver system enables this detection signal to be universally utilized across multiple control units, eliminating the need for dedicated sensors per device.
2Reliability
If multiple sensors are installed in each ventilation device, then measurement reliability is improved, but system cost and complexity increase
Solution Approach 1:
The system merges multiple sensing requirements into a single shared sensor, where one sensor's detection signals are distributed to multiple ventilation devices through the transmitter-receiver system. This maintains detection reliability for system-level control while avoiding redundant sensors.
Solution Approach 2:
Instead of physically copying sensors to each device, the system creates signal copies through the transmitter-receiver mechanism. The detection signal from one sensor is transmitted and received by multiple control units, providing redundant access to air quality data without physical sensor redundancy.
3Quantity of substance
If a transmitter-receiver system is implemented for signal sharing, then sensor redundancy is reduced, but communication infrastructure complexity increases
Solution Approach 1:
The transmitter-receiver system acts as an intermediary between the single sensor and multiple control units. This mediator enables efficient signal distribution, reducing sensor quantity while managing communication complexity through standardized transmission and reception protocols across the ventilation network.
Data Source
AI summary
A ventilation system includes a plurality of ventilation devices, a sensor, a setting unit, and a transmitter-receiver. The sensor is attached to a predetermined ventilation device of the plurality of ventilation devices. The sensor detects a state of air. The setting unit sets, from the plurality of ventilation devices, a first ventilation device to which the sensor is to be attached, and a second ventilation device with which a detection signal of the sensor is to be shared. The transmitter-receiver receives the detection signal of the sensor and transmits the detection signal to control devices of the first and second ventilation devices. The first and second ventilation devices are set in the setting unit. Each of the control devices of the first and second ventilation devices controls an associated one of the ventilation devices based on the detection signal transmitted from the transmitter-receiver.