Product quality by temperature and humidity monitoring
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| Before wood can be used, e.g. for furniture, it has to be dried, either at an open air drying site or using drying kilns, where timber will be stacked in chambers and an airflow with tightly controlled temperature, humidity and pressure profiles is applied to reduce wood moisture to the specified levels. |
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Air temperature and humidity, wood moisture, temperature distribution and the consumption of heat and power, are therefore important data which has to be continuously monitored during the drying process.
To achieve the aim of drying with short processing time and at low costs as well as high quality, the temperature profile within the stack is pre-programmed and controlled during the process.
E-Senzas solution for monitoring wood-drying processes offers flexible battery-powered wireless nodes, SenzaBlocks , with integrated temperature and humidity sensors as well as interfaces to existing sensors. The easy-to-install wireless sensor-nodes collect data automatically in pre-set intervals and exchange them with the control system through a self-organizing wireless mesh network.
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The network is managed through a gateway, SenzaGate, which provides connectivity to the control unit. It comes with connectivity options for field bus systems like Profibus, RS485, Modbus, Ethernet. A GPRS-interface is available as well when data is to be exchanged with a remote control center, e.g. in case of an open air drying site. The web based software-suite SenzaWMS is completing our portfolio. It provides a friendly user-interface for comfortable administration of multiple networks and monitoring of each individual sensor. Various options for integration with existing system environments are included as well as data analysis functions, graphing and data management through a SQL database.
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