A Development of an Automatic Frequency Response Measuring and Classification System on the In-Ear Headphones
| Autor: | Hau-Chiun Tzeng, 曾皓群 |
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| Rok vydání: | 2014 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 102 The purpose of this study was to design an automatic classification system by using electroacoustic device analyzer to measuring the frequency response of the in-ear headphones. The design of this system was designed by Pro/E. In addition, it was improved via testing process. The system controller used in the study is the Microchip PIC18F4520 microcontroller. The controller is connected with electroacoustic device analyzer and various parts of motor driver to control the process. The classification system is divided into two parts : The first part is the placement of in-ear headphones in a matrix tray. Using two electric slides and a linear rail to build a two-axis X-Y table. Then, establishing a device onto the X-Y table to move the in-ear headphone to the correct point and to drop down the headphones to a 10×10 matrix tray. The second part is the classification mechanism. According to the measuring results of the frequency response, the in-ear headphones can be divided into eight classes. The controller will plan a shortest path to move the in-ear headphones when receiving the classification results from the frequency response measuring device. In addition, the number of each class for the in-ear headphones will be recovered and set as the coordinates for the X-Y table to move. This study aims to establish an automatic classification system used in the in-ear headphones. The in-ear headphones will be correctly moved to the related position of the matrix tray when the frequency response’s classification is done and the message is forwarded to the controller will be forwarded to the discharge place if the number of the inspected in-ear headphones inside the matrix tray reaches one hundred. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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