摘要
良好的骨導產品可以讓使用者能聽得清楚且使用舒適。一般骨導產品的測量儀器(如B&K 4930 Artificial Mastoid)昂貴，而且只能模擬人頭顱特定部位(如乳突骨)的功能，屬於高精密度的實驗室設備，一般工廠礙於成本無法配置在生產線上做產品測試。所以本研究以壓電片製作骨導震動器與骨導感測器，並研製一個開放式的骨導量測環境，讓骨導產品的測量更方便與平價。
本研究針對骨導震動器的部分，採用長方形雙層壓電片作為震動源，再利用IC( MAX 9788 )製作驅動電路來驅動壓電片。針對骨導感測器的部份，則是以單層的橢圓形壓電片作為sensor，輸出的訊號會經過電荷電壓放大器放大。針對測試環境的部份，則製作低震動的環境減少雜訊，然後利用LabVIEW軟體開發出控制系統，再將控制系統擷取到的信號繪製成頻率響應圖，用以比對產品是否符合規格。
本研究採用標準骨導震動器、標準震動感測器和壓電式骨導震動器與感測器，利用一般電聲量測系統和壓電式骨傳導量測系統進行交叉測試並比較結果。發現壓電式骨導震動器的頻率響應曲線較標準感測器平緩，但在約8000Hz仍有較大輸出；壓電式骨導感測器的頻率響應曲線較標準品高100mV，對於產品優劣的判別會較明顯。
未來，如果將震動器與感測器之間，依據不同的人體部位，放上類似該部位的人造介質，不僅讓骨傳導產品的測試更為擬真，也可以讓骨導產品的開發更符合消費者的期望。

Abstract
The good bone conduction product can make user hearing clearly and using comfortably. The bone conduction product measuring instruments (such as B&K 4930 Artificial Mastoid) are expensive and can only simulate the functions of the specific human head part, such as the mastoid bone. Those are high precision equipments of the lab. General factories could not use them to test products at production line. As a result, bone conduction vibrator and sensor made of piezoelectric slice was used to develop an opening measurement environment of bone conduction. It can make the measurement of bone conduction product more convenient and inexpensive.
The rectangular bimorph was used as vibration source driver by IC (MAX 9788). An oval unimorph was used as a sensor and its signal was amplified by a charge amplifier. A low-vibration environment was used as a test platform for reducing vibration noise. The control system developed by LabVIEW software captures output of the charge amplifier and paints the curve of frequency response. The curve can be checked of products.
A standard bone conduction vibrator, a standard vibration sensor and piezoelectric bone conduction vibrator and sensor are cross-tested by using general electro-acoustic measurement system and the piezoelectric bone conduction measurement system. The curve of frequency response of piezoelectric vibrator is flatter than the standard vibrator. Additionally, it had large output amplitude at about 8000Hz. The frequency response of the piezoelectric sensor is 100mV higher than standard sensor. It can be used to check the product quality.
In the future, the artificial medium simulating the different parts of human head is placed between the vibrator and the sensor. It not only can make bone conduction products testing more verisimilar, but also can satisfy customer’s expectation.

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