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For the traditional surveillance system with the weakness of over-reliance on monitor environment, poor mobility and so on, this paper proposed a monitoring scheme based on android smart phone terminal, which makes it possible to monitor the target site anywhere and anytime under the coverage of wireless network and enhances the flexibility of surveillance system greatly.
A number of challenges in the thermal simulation of air-cooling systems for power-electronic devices, in particular IGBT switches, are addressed, including (i) strongly dynamic power losses; (ii) thermal cross-talk between IGBTs and diodes; (iii) variable fan speed, making the cooling system time-variant; (iv) fast simulation of transient operation over long periods of time; (v) fins with surface...
The reliability for measure and control system of a space environment simulator is analyzed in the paper to build the models. The paper systematically summarizes the state of measure and control system. The system structure and principles are introduced. According to requirement of environmental test, working procedures of the system are divided into the particular assignments. On the basis of reliability...
According to the effect of water with suspended particles to light propagation and temperature to turbidity and pressure, a multi-parameter measuring system with wireless transceiver and automatic temperature compensation is designed. The measured value of turbidity, temperature and pressure are transmitted to host computer (its monitor system software is written under VisualBasic6.0 program) by radio...
In order to collect dissolved oxygen (DO) content, transmit far away and store reliably in fish culture, this paper introduces an intelligent dissolved oxygen detecting system based on CAN bus and embedded USB host. Here, CAN bus is applied to field environment of aquaculture. Using real-time, reliability and flexibility of the CAN bus, DO content could be monitored real-time and reliably in water...
According to the principle of salinity measurement by conductance method, a kind of salinity detecting instrument using the processor SOC MCU C8051F040 was conducted in this paper, and this instrument worked as a intelligent detecting node on CAN bus. A kind of CAN-Ethernet gateway was designed based on ARM7 microprocessor LPC2292. The real-time operating system muC/OS-II was used as the software...
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