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Temperature and humidity control of the intelligent greenhouse is an important link of monitoring. This paper uses Surplus 16-bit single chip microcomputer as the core control of the system. Combined with wireless transceiver chip NRF401, USB interface device PDIUSBD12 and temperature and humidity module YXHT300U, we designed a wireless temperature and humidity monitoring system which used in intelligent...
The biomass energy is a kind of renewable resources. After using the prototyping machine to press bio-energy into block in ordinary temperature, it can be used as a fuel. This paper introduces a kind of two-way extrusion fuel prototyping machine, which can transform crop stalks into the biomass energy by normal forming technology. This system uses Siemens S7-200 PLC as the control core, and by programming...
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