An Ultralow-Power Wireless Camera Node: Development and Performance Analysis

doi:10.1109/TIM.2011.2147630

An Ultralow-Power Wireless Camera Node: Development and Performance Analysis

2011-12-01

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DOI：10.1109/TIM.2011.2147630

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This paper presents the design principles underlying the video nodes of long-lifetime wireless networks. The hardware and firmware architectures of the system are described in detail, along with the system-power-consumption model. A prototype is introduced to validate the proposed approach. The system mounts a Flash-based field-programmable gate array and a high-dynamic-range complementary metal-oxide-semiconductor custom vision sensor. Accurate power measurements show that the overall consumption is 4.2 mW at 3.3 V in the worst case, thus achieving an improvement of two orders of magnitude with respect to video nodes for similar applications recently proposed in the literature. Powered with a 2200-mAh 3.3-V battery, the system will exhibit a typical lifetime of about three months.

Keyword:

Complementary metal-oxide-semiconductor (CMOS) vision sensor

field-programmable gate array (FPGA)

image processing

people counter

surveillance

ultralow-power node

wireless camera network (WCN)

An Ultralow-Power Wireless Camera Node: Development and Performance Analysis

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