The following solution outlines the design of a 2500m² hydroponic system for lettuce cultivation, utilizing PKYDrip intelligent sensors and control systems. The system integrates monitoring for temperature, humidity, CO₂ concentration, EC, and pH values, and automates water pump cycles, ventilation fans, and grow lights. This advanced setup supports up to 128 data collection devices and 32 control outputs, ensuring efficient management and maximum productivity.
1. Sensor Requirements and Quantity Estimation
1.1 Environmental Sensors
Environmental sensors ensure comprehensive data collection across the entire hydroponic system for optimal growth conditions.
| Sensor Type | Function | Quantity Required |
|---|---|---|
| Temperature Sensors | Monitors overall system temperature to avoid overheating or cooling. | 1 sensor per 500m², total 5 sensors. |
| Humidity Sensors | Tracks air humidity to prevent moisture accumulation. | 1 sensor per 500m², total 5 sensors. |
| CO₂ Sensors | Monitors CO₂ levels to optimize photosynthesis efficiency. | 1 sensor per layer, total 5 sensors. |
1.2 Nutrient Solution Sensors
Nutrient solution sensors are essential for maintaining healthy root systems and providing balanced nutrients.
| Sensor Type | Function | Quantity Required |
|---|---|---|
| pH Sensors | Measures the acidity or alkalinity of the nutrient solution for optimal nutrient absorption. | 1 sensor per nutrient circulation unit, total 2 sensors. |
| EC Sensors | Monitors electrical conductivity to reflect nutrient concentration. | 1 sensor per nutrient circulation unit, total 2 sensors. |
1.3 Total Sensor Count
- Environmental sensors: 15 sensors (temperature, humidity, CO₂: 5 each).
- Nutrient solution sensors: 4 sensors (pH: 2, EC: 2).
2. Control System Design and Output Allocation
2.1 Control Output Allocation
The PKYDrip intelligent control system with 32 control outputs is allocated to key operational devices:
- Water Pumps: 2 outputs for the primary and backup pumps.
- Ventilation Fans: 10 outputs for fans (2 per layer across 5 layers).
- Grow Lights: 5 outputs for light control (one per layer).
- Reserve Outputs: 15 outputs for future expansion.
2.2 System Functionality
- Water Pump Control:
- Timed cycles based on nutrient demand.
- Adjusted dynamically through pH and EC sensor feedback.
- Fan Control:
- Activated by humidity sensors to maintain airflow and prevent condensation.
- Fan speed adjusts based on environmental conditions.
- Grow Light Control:
- Timed schedules to maintain the light cycle for photosynthesis.
- Pauses during low CO₂ levels to save energy.
3. Sensor Installation and Placement
3.1 Environmental Sensor Installation
- Temperature and Humidity Sensors:
- Positioned at the top of the planting racks near ventilation fans.
- Spaced 40-50cm away from plants to avoid airflow interference.
- CO₂ Sensors:
- Installed centrally at each rack layer to ensure accurate monitoring across all levels.
3.2 Nutrient Solution Sensor Installation
- pH and EC Sensors:
- Installed at the nutrient solution tank’s outlet for real-time monitoring.
- Each nutrient circulation unit is equipped with a dedicated sensor set.
4. System Installation and Configuration
4.1 Installation Steps
- Sensor Setup:
- Place sensors in their designated positions and secure them with waterproof connectors.
- Ensure all sensors are connected to the PKYDrip intelligent system via wired or wireless interfaces.
- Control Device Setup:
- Install water pumps, ventilation fans, and grow lights, and connect them to control outputs.
- Assign output channels for easy device identification.
4.2 System Configuration
- Parameter Settings:
- Define thresholds for each sensor:
- Temperature: 18-24°C.
- Humidity: 60%-70%.
- pH: 5.8-6.5.
- EC: 1.8-2.2 mS/cm.
- Define thresholds for each sensor:
- Automation Programming:
- Water pump cycles: Operates every 4 hours for 15 minutes.
- Fan operation: Activated when humidity exceeds 70%.
- Light schedules: Runs 16 hours daily with phased activation.
5. System Advantages
| Feature | Benefit |
|---|---|
| Centralized Monitoring | Real-time data on temperature, humidity, CO₂, pH, and EC ensures precise management. |
| Automation | Saves labor, optimizes resource utilization, and reduces operational costs. |
| Scalability | Supports up to 128 sensors and 32 control outputs for future expansion. |
| Intelligent Management | Cloud platform integration allows remote control and data-driven adjustments. |
6. Sensor Layout Overview
codeLayers: 5 planting rack layers
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Top: Ventilation fans (2-3 per layer)
Center: CO₂ sensors (1 per layer)
Planting Channel Area: Temperature and humidity sensors (1 per 500m²)
Nutrient Solution Tank: pH and EC sensors (1 set per unit)
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By integrating PKYDrip intelligent sensors and control systems, this 2500m² hydroponic system ensures precise monitoring and efficient operation. With scalable technology and automated controls, it maximizes resource utilization and improves crop productivity. Contact us for customized solutions and technical support!