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For the demand of special sensors' full test in industry scene, a small high-speed logger which can be embedded in machines appears.S3C2440A is used as main control chip, μC/OS-II as Embedded Operating System. With high-speed AD convert chip AD7899, it presents the solution to signal disturbance in multi-channel, high-speed signal sampling and storage. Its functions include the collection, the recording...
Time synchronization is an important middleware service of distributed systems, amongst which Distributed Intrusion Detection System (DIDS) makes extensive use of time synchronization in particular1. Time synchronization has become a critical area of research today. Network Time Protocol (NTP) and Precision Time Protocol (PTP) are the current widely accepted standards for synchronizing clock over...
The design in this paper is a kind of greenhouse control system which imitates temperature and humidity on the basis of digital temperature sensor DS18B20. The system has the following characteristics: the temperature control system is the system which imitates natural environment, the system could get the optimal values about temperature and humidity which fit Radix Acanthopanacis Semticosi's growth...
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