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With the continuous development of the auto- detection technology , communications technology , computer technology , the control of greenhouse requirements continue to improve . The silkworm cultivation of room as one of the greenhouse in silkworm production process , has a pivotal role . Nurturing quality of the pros and cons , and directly related to the level of cocoon production . Therefore , modern silkworm industry needs to modern silkworm nurture room . The the topics introduced lonworks fieldbus technology , introduces the the silkworm egg incubator intelligent automatic control system hardware and software design . The fieldbus technology of the system application lonworks , the fuzzy control algorithm , silkworm eggs into the incubator temperature , humidity , air conditioning , fans , actuators based on the the silkworm cultivation of technical regulations , to achieve automatic control . The LonWorks Fieldbus control network is currently the most popular communication ability . It supports the ISO / OSI seven-layer model , is widely used in the field of building automation , home automation , and industrial control . The silkworm cultivation of room is a greenhouse system , the temperature and humidity of the control object the inertial nonlinear variable , it is difficult to establish precise mathematical model , so fuzzy control algorithm . Fuzzy control algorithm is an intelligent control algorithm , it is to some extent simulate human thinking and logical reasoning , the use of human intuition and experience to design control systems , both systematic theoretical background while a large number of practical applications . It does not need to establish a precise mathematical model of controlled object , has the advantages of fast response , small overshoot , short transition time , very suitable for the greenhouse control system . Temperature acquisition module of the system uses a distributed acquisition mode , the upcoming multiple devices connected with an IO line , it is necessary to improve the acquisition accuracy , but also save the the control chip hardware resources . This topic selected 1-wire temperature sensor DS18b20 . Because and multiple of DS18B20 articulated in the same IO pin , so must be used in the the DS18B20 search algorithm can get the location of each temperature sensor , and thus achieved its temperature .
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