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Greenhouse Intelligent Monitoring and Control Solution

Precision Farming

Farming Orchids is the most successful form of precision farming in Taiwan, and also the most exported flower. Orchids need a specific temperature and humidity conditions to grow and bloom, and its flowering time may not be in line with market demands, so the price collapses when there is overproduction. Therefore, some farmers began to import automated greenhouse control systems for breeding and forcing, which not only improves quality, but also effectively controls the production period and yield to ensure revenue. In 2012, an orchid farmer built a Forcing Greenhouse of about 200 pings (approximately 661 Square Meters) in Tainan, Taiwan. The system integrator adopted Advantech’s APAX-5000 series programmable automation controllers to build the control platform, coupled with Advantech WebAccess HMI/SCADA software, to achieve cloud monitoring. The staff of the orchid field can monitor important data anytime via smart phone, iPad, and other handheld devices, and control the growth and flowering conditions. System requirements: In the past, most environmental control systems of orchid greenhouses in Taiwan used PLCs (Programmable Logic Controller) with poorscalability and control, and could not be connected to the Internet formonitoring from the cloud. For advanced database analysis and networking capability, the PC platform must be adopted. Therefore, PAC Systems (Programmable Automation Controller) with both PLC programming capabilities andPC functions is a better choice.The environmental control of the Orchid greenhouse switches on and off devices like fan, shade net, cooling/heat pump, liquid flow control, water-cooling wall etc. It is controlled by a control panel of electric controllers, and is driven by a motor, to adjust the greenhouse temperature, humidity, and other environmental conditions to the set parameters.

Orchid Greenhouses

A PAC greenhouse environmental control system requires the following devices: • Sensors to detect environmental conditions such as temperature and humidity inside and outside the greenhouse, sunshine, wind direction and speed etc. • Control components to execute commands, to control fans, shades, nets, water walls, liquid flow, and other equipment. • A control host which can analyze and compute, connecting sensors, control components, electric equipments, and office computers. • HMI/SCADA software to input control parameters from computer, with the abilities of database analysis and remote monitoring. The Forcing Greenhouse uses an Advantech APAX-5520 programmable controller as a control host to connect the APAX-5520, APAX-5017, APAX-5028, APAX-5045, and other I/O modules, to attach to the remote sensors and control components via cables, and to connect to expansion modules and electric controllers via a network cable. The above devices form a complete automation and control architecture. With Advantech APAX controllers and WebAccess software, the staff of the orchid farm can set the greenhouse’s environment control parameters with an easy-to-use graphical interface in the computer and network environment. The system automatically detects the sunshine, temperature, humidity, air circulation, and other conditions, activating control components to adjust the environmental condition inside the greenhouse to the set parameters. For clients, the APAX-5520 control host connects to the office PC via a network cable, and connects to the cloud via wireless transmission. For monitoring orchid greenhouse conditions and data, the staff only needs to download and install Advantech App ona smart phone or iPad. Advantech’s APAX-5000 series have the advantage of saving wiring costs and being of a low cost. In the old PLC system, the control host needed several cables to connect to electric equipment in greenhouse. The wiring is quite complex and difficult to maintain but the APAX-5020 only needs one network cable to connect to the APAX expansion module and the environmental control room. Technology Deployed: APAX-5520(control host): XScale CPU Microcontroller / PC-Based Controller APAX-5002(module expansion base): 2-slot backplane module APAX-5017: 12-channel analog input module APAX-5028: 8-channel analog output module APAX-5045: 12-channel digital input / 12-channel output module

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Mature (technology has been on the market for > 5 years)
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Total Cost of Ownership - Lowered due to reduction in labor cost and IT management.
Predictive Maintenance - The solution enables predictive maintenance which helps reduce maintenance costs.
Real-time Tracking - The location of individuals and assets can be identified in near real-time.
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