Ventilation system
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Solution Overview
Problem
Existing ventilation systems lack efficient control mechanisms for managing indoor air quality, particularly in large spaces, as they often require multiple sensors and complex control systems, which can be costly and difficult to manage.
Innovation Solution
A ventilation system comprising multiple ventilation units with a central carbon dioxide concentration sensor that transmits detection signals to control devices, allowing for coordinated control of air supply and exhaust fans, reducing the need for individual sensors and simplifying the control architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are installed in each ventilation unit to detect air quality, then measurement precision and reliability are improved, but device complexity and cost increase
Solution Approach 1:
Multiple ventilation units share a single sensor (carbon dioxide concentration sensor, humidity sensor, or temperature sensor) installed in the ceiling. The sensor detects air quality parameters and transmits signals to a control unit that coordinates control of multiple fans across different ventilation units, replacing what would traditionally require individual sensors in each unit.
Solution Approach 2:
A single sensor serves multiple ventilation units simultaneously, performing the detection function for all units. The control unit receives signals from this universal sensor and generates control signals for multiple fans, making the sensor system multi-functional across the ventilation network.
2Measurement precision
If individual sensors are installed in each ventilation unit, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
Multiple ventilation units share a single sensor (carbon dioxide concentration sensor, humidity sensor, or temperature sensor) installed in the ceiling. The sensor detects air quality parameters and transmits signals to a control unit that coordinates control of multiple fans across different ventilation units, replacing what would traditionally require individual sensors in each unit.
3Measurement precision
If multiple sensors and complex control systems are used, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
Multiple ventilation units share a single sensor (carbon dioxide concentration sensor, humidity sensor, or temperature sensor) installed in the ceiling. The sensor detects air quality parameters and transmits signals to a control unit that coordinates control of multiple fans across different ventilation units, replacing what would traditionally require individual sensors in each unit.
Solution Approach 2:
The sensor continuously monitors air quality parameters (carbon dioxide concentration, humidity, temperature) and transmits detection signals to the control unit. The control unit processes these signals and generates control signals to adjust fan operations, creating a closed-loop feedback system that automatically maintains optimal air quality without requiring manual intervention.
4Device complexity
If a single sensor is shared across multiple units, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
Multiple ventilation units share a single sensor (carbon dioxide concentration sensor, humidity sensor, or temperature sensor) installed in the ceiling. The sensor detects air quality parameters and transmits signals to a control unit that coordinates control of multiple fans across different ventilation units, replacing what would traditionally require individual sensors in each unit.
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 enables efficient ventilation management by sharing a single carbon dioxide concentration sensor across multiple units, reducing costs and complexity while ensuring optimal indoor air quality through coordinated fan control, thereby improving ventilation efficiency and reducing the number of required sensors.
Implementation Method 1
a carbon dioxide concentration sensor for detecting a carbon dioxide concentration in air
Implementation Method 2
The total heat exchanger transfers latent heat and sensible heat between the indoor air and the outdoor air
Data Source
AI summary
A ventilation system includes a first ventilation device, a second ventilation device, a sensor, and an electronic controller. The first ventilation device includes a first fan. The second ventilation device includes a second fan. The sensor is attached to the first ventilation device. The sensor is configured to detect a state of air and to transmit a detection signal indicative of the detected state of air. The electronic controller is configured to receive the detection signal of the sensor and to control the first ventilation device and the second ventilation device based on the detection signal.