Flow similariy applied in convection-based tilt sensor

IMECH-IR > 力学所知识产出(1956-2008)

	Flow similariy applied in convection-based tilt sensor
	Peng SL(彭世镠); Zheng YH; Peng S
会议录名称	Proceedings Of The Asme International Mechanical Enginering Congress And Exposition 2007, Vol 9, Pts A-C - Mechanical Systems And Control
	2008
页码	537-542
会议名称	ASME International Mechanical Engineering Congress and Exposition
会议日期	NOV 11-15, 2007
会议地点	Seattle, WA
摘要	The environment temperature has inevitable effects on property of the convect ion-based tilt sensors. It not only redefines the application, but also prevents the improvement of the sensor performance. Numerical simulation of the fluid flow in the chamber of a sensor was performed and the influence of the environment temperature was studied in this paper. At zero tilt angle, the temperature distribution along the perpendicular line cross the heat source at various environment temperatures was presented. It was found that the flow varied dramatically at different environment temperatures, which would cause the output signal vary accordingly, even when the tilt angle was kept at a constant, because this device works by sensing the change of flow. At the same condition, we present the numerical results when the temperature difference across the heat source and the environment was kept at the same, in those results, it was found that the temperature difference at every point along the perpendicular line cross the heat source keep the same, this result confirms the similarity principle of nature convection. Second, A method of eliminating environment temperature infect on property of convect ion-based tilt sensor, which is based on the theory of flow similarity, is proposed. It was found that a thermal transistance can be piped on the circuit of heat source to compensate the temperature of the heat source. A compensative circuit was specially designed which can keep flow similarity by changing heat source temperature in order to eliminate the influence of environment temperature. The experiment results show that above 70% temperature drift can be eliminated by this compensative circuit.
WOS记录号	WOS:000254515900062
收录类别	CPCI-S ; EI
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/25442
专题	力学所知识产出(1956-2008)
通讯作者	Peng S
推荐引用方式 GB/T 7714	Peng SL,Zheng YH,Peng S. Flow similariy applied in convection-based tilt sensor[C]Proceedings Of The Asme International Mechanical Enginering Congress And Exposition 2007, Vol 9, Pts A-C - Mechanical Systems And Control,2008:537-542.

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