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A distributed optical fiber sensor (DOFS) system with a sensing distance of 10 km was developed for applications in coal mine temperature measurement and fire alarm. The achieved temperature resolution and uncertainty are 0.1 and ±2°C, respectively. And the spatial resolution and measurement time are 3 m and 12 s, respectively.
An novel technology of CO2 capture from coal-fired flue gas is Ammonia chemical adsorption method. Experimental system of CO2 adsorption by ammonia water is established on the base of a bubble column reactor in this paper. Effects of key parameters on CO2 adsorption process, such as ammonia water concentrations, PH values of solutions, C/N molar ratios, amounts of water brought by gas, are studied...
In this paper, the configuration characteristic of the safe parameter measurement and alarm system used in a new type mine is introduced. The system is made up of wire communication and radio communication with a topological structure. Then, it respectively introduces the hardware and software construction, the working principle and the method of design, which makes the enhanced single chip microcomputer...
To improve the flexibility and capability-price ratio, an approach for designing the forest fire early warning system was first proposed. In this system, the wireless communication methods combined with wired one based on topological structure was adopted. Second, we discussed and introduced the characteristics of structure, working principle and design method of the system in detail. Finally, a large...
The Design method of automated production line for Emulsified asphalt is introduced. The combined control system's hardware and software structure for IPC (Industrial personal computer)-PLC (programmable logic controller) has been designed. The application of the PLC makes the control system run reliably and simplifies logic program design. The automatic control of the IPC to process can largely raise...
Advances in wireless technology and supporting infrastructure provide unprecedented opportunity for ubiquitous real-time healthcare and fitness monitoring without constraining the activities of the user. Wirelessly connected miniaturized sensors and actuators placed in, on, and around the body form a body area network for continuous, automated, and unobtrusive monitoring of physiological signs to...
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