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9 November 2010 Fuzzy location device based on infrared light intensity modulation
Chen Shen, Xiaoying Chen, Mingming Wu, Jin Xu
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Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 785329 (2010) https://doi.org/10.1117/12.869716
Event: Photonics Asia 2010, 2010, Beijing, China
Abstract
Most of the traditional distance measurement using electromagnetic waves or electromagnetic pulse time of flight to obtain distance information. It has been widely used in various fields ranging. Accuracy and high resolution can get by the method. Ranging in many occasions does not need high accuracy and resolution. For example, it can reverse radar, blind obstacle avoidance, etc. This paper presents a new distance measuring device that based on infrared light intensity modulation. Moreover the device combine with the fuzzy control theory, so called fuzzy location device based on infrared light intensity modulation. The device includes the infrared modulation transmission unit, collimating unit, infrared receiver unit, background light sensor unit and data processing unit. If alarm distance is n m, data processing unit set infrared light intensity of infrared modulation transmission unit and the light intensity threshold of infrared receiver unit by look-up table with fuzzy control theory. It is according to the current background light intensity. Once the receiving light intensity exceeds the threshold, the system alerts. The paper expounds the working principle, fuzzy control theory on the domain and fuzzy rules domain, the experimental results of the device and analysis in detail. It shows that the device is small, low cost and suitable for a large number of used when it dose not need high accuracy and resolution measurement
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Chen Shen, Xiaoying Chen, Mingming Wu, and Jin Xu "Fuzzy location device based on infrared light intensity modulation", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 785329 (9 November 2010); https://doi.org/10.1117/12.869716
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KEYWORDS
Infrared radiation
Modulation
Fuzzy logic
Detection theory
Receivers
Control systems
Signal processing
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