Greenhouse Climate Control Using Venturi-Effect Sensor Integration
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Solution Overview
Problem
Existing greenhouses experience significant variations in temperature and humidity conditions during the day, leading to uneven climate conditions within the interior space.
Innovation Solution
A greenhouse with a climate control system featuring a grid of control units, each equipped with temperature and humidity sensors, and a central controller that individually adjusts air displacement based on local measurements to maintain uniform climate conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a grid of control units with individual sensors and ventilators is implemented, then climate uniformity is improved, but device complexity increases
Solution Approach 1:
The greenhouse climate control system is divided into multiple independent control units, each responsible for a specific zone. Each unit contains its own sensors and ventilator, enabling localized climate management. This segmentation allows the system to address temperature and humidity variations in different regions independently, achieving overall climate uniformity while maintaining manageable complexity through modular design.
Solution Approach 2:
Each control unit is equipped with local temperature and humidity sensors that measure conditions in its specific zone. The ventilators in each unit adjust air displacement based on local measurements rather than uniform global control. This local quality approach enables precise adaptation to regional climate variations, ensuring each zone receives appropriate climate control tailored to its specific conditions.
2Stability of the object's composition
If individual adaptability of air displacement is implemented based on local measurements, then climate homogeneity is improved, but measurement and control difficulty increases
Solution Approach 1:
Each control unit incorporates temperature and humidity sensors that continuously measure local climate conditions. These measurements feed back to the control system, which automatically adjusts the ventilator's air displacement to maintain desired climate parameters. This closed-loop feedback mechanism simplifies control by using real-time sensor data to drive automatic adjustments, reducing the complexity of manual measurement and control while achieving climate homogeneity.
3Measurement precision
If multiple sensors and control units are distributed throughout the greenhouse, then climate control precision is improved, but system complexity increases
Solution Approach 1:
The measurement and control system is segmented into multiple independent control units distributed throughout the greenhouse. Each unit contains temperature and humidity sensors along with a ventilator, creating modular measurement-control pairs. This segmentation enables precise local measurements and control while reducing overall system complexity through standardization and modularity, making installation and maintenance more manageable compared to a centralized complex system.
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 minimizes temperature and humidity differences by adaptively controlling air flow, resulting in a more homogeneous climate environment.
Implementation Method 1
an additional flow path is present comprising one or more sensors and which additional flow path fluidly connects an opening in the housing with the ventilator flow path for drawing in air due to a venturi effect via the additional flow path towards the ventilator flow path
Data Source
AI summary
It is disclosed a ventilator (9A, 9) comprises a housing (20) having opposite first (21) and second ends (22) and an axial rotor (23) arranged in a ventilator flow path (23A), wherein the ventilator flow path (23A) has an inlet at the first end (21) of the housing (20) and an outlet (22A) at the second end of the housing (20) and wherein an additional flow path (25) is present comprising one or more sensors and which additional flow path (25) fluidly connects an opening (16, 24) in the housing (20) with the ventilator flow path (23A) for drawing in air due to a venturi effect via the additional flow path (25) towards the ventilator flow path (23A), wherein the sensors are temperature and/or humidity sensors.