Low cost smart sensors using infrared detector arrays

Porter, Stephen G.; Mansi, M. V.; Sumpter, Neil; Galloway, Lindsay

doi:10.1108/02602280110406927

Cited by 9 publications

(2 citation statements)

References 4 publications

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“…They placed the detector arrays 60 cm apart parallel to the moving direction and used pattern matching and data comparison algorithms for counting. Another passive infrared counter is the one manufactured by IRISYS [7] which employs a downward facing pyroelectric array of 16 × 16 format. Compared to the image processing techniques, the thermal image processing in IRISYS counter is very easy and fast because of the low resolution and binary nature of the image [8].…”

Section: Related Workmentioning

confidence: 99%

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Evaluation of a "Smart" Pedestrian Counting System Based on Echo State Networks

Mathews

Poigné

2009

EURASIP Journal on Embedded Systems

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We have designed an inexpensive intelligent pedestrian counting system. The pedestrian counting system consists of several counters that can be connected together in a distributed fashion and communicate over the wireless channel. The motion pattern is recorded using a set of passive infrared (PIR) sensors. Each counter has one wireless sensor node that processes the PIR sensor data and transmits it to a base station. Then echo state network, a special kind of recurrent neural network, is used to predict the pedestrian count from the input pattern. The evaluation of the performance of such networks in a novel kind of application is one focus of this work. The counter gave a performance of 80.4% which is better than the commercially available low-priced pedestrian counters. The article reports the experiments we did for analyzing the counterperformance and lists the strengths and limitations of the current implementation. It will also report the preliminary test results obtained by substituting the PIR sensors with low-cost active IR distance sensors which can improve the counter performance further.

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Section: Related Workmentioning

confidence: 99%

“…The moving person is mapped to a white blob formed by clusters of elements. The main disadvantage is the high selling price (4000 £ [7]) of the unit which makes it too expensive for many customers.…”

Section: Related Workmentioning

confidence: 99%