| dc.description.abstract | The main purpose of this paper is the study of the pyroelectric infrared sensor of the optical system simulation, which is using TracePro optical simulation software, to focus electrical type infrared sensors，optical components for the design and analysis, and to optimize the sensing range of products design goals. The first chapter is to introduce the history and circumstances of the infrared，the second chapter is an introduction to infrared theory and pyroelectric infrared sensor. Chapter III of the Taguchi method and simulation software, TracePro to do experimental analysis will establish the best combination of design parameters, the Taguchi method in the parameter design, the use of plastic lens material, lens size, lens focal length, Fresnel lens fringe spacing, lens aimed at the location and lens thickness of six control factors and the five standards of parameter design, and focus to improve the human infrared sensor window irradiance.Orthogonal array of Taguchi method L25 (56) set the parameters to use tracepro optical simulation software to simulate, and has made 25 sets of simulation results, and then simulation results using orthogonal array calculated using the orthogonal array design and variance analysis to find out why the major effector molecules in the process, as well as interactions between each factor on the response to the value of optimization, can effectively reduce the number of simulations, the original six factors, five standards to be done to the 15 625 simulated simplified to 25, so that the design in a short period of time to get better design parameters.Without the original design of the Taguchi method to optimize the sensor optical system, by TracePro simulation of the status of the radiation intensity (Irradiance) 14.613 W/m2; Taguchi method, to predict the status of best design parameters illumination of the radiation to 52.797 W/m2 irradiance be improved significantly.
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