臺灣博碩士論文加值系統

本論文
利用對數螺旋為基礎 設計 出 對經皮神經電刺激器 (TENS)之新 變頻模式，
並觀察輸出脈衝總能量之變化。
本論文 採用 盛群半導體 HT66F2390微控制器與 Altera EPM3064ATC44-10N為基
礎，利用 MCU本身的 TM計時 模組 、外部中斷等模組，並結合 於 CPLD內部設計之
邏輯電路 且依循對數螺旋的特性 來對 由 MCU產生的 基頻 脈波 40kHz做 重新整理
由此達到變頻 的 效果。 以此 方法 經過整理之訊號做為 開關控制器 UC3845的震盪時脈
源並結合順向式 電源 拓撲 達到經皮神經電刺激器 (TENS)的輸出。
由於人體在接受一定頻率的 電刺激 下 會產生適應性，從而降低電刺激器的治療成
效，故 本系統輸出頻率範圍由 1Hz至 39Hz自動變頻， 並且帶有按摩 與疼痛舒緩的 效
果 ，且由於變頻方式是以對數螺旋為基礎來動作，這使得使用者於使用 上的 感 受 不會
感到因不明 方式 的變頻而造成的不適感 。

This thesis develops a new pattern of variable frequency for Transcutaneous Electrical Nerve Stimulation (TENS) based on logarithmic spiral and observes the changes in the total energy of output pulses.
In the development method, this product adapts HT66F2390 from Holtek as the main microcontroller collocate with EPM3064ATC44-10N from Altera. In order to reorganize basic frequency, this product uses the built-in timer modules and interrupt and collocate with the logic circuit designed in CPLD. Base on this method to achieve variable frequency and intensity conversion. The output of TENS will use this signal which is reorganized to be the oscillation source of switch controller UC3845 and collocate with forward converter.
To prevent adaptability caused by the fixed frequency stimulus. This product progressively changes its frequency of output pulses automatically from 1Hz to 39Hz. To achieve massage effects and to soothe the aches. The discomfort caused by an unknown pattern of variable frequency will be solved based on logarithmic spiral variable frequency.

摘要...... i
Abstract...... ii
誌謝...... iii
目錄...... iv
表目錄...... vi
圖目錄...... vii
第一章...... 緒論 - 1 -
1.1研究目的與動機...... - 1 -
1.2文獻回顧...... - 1 -
1.3論文架構...... - 3 -
第二章 系統設計原理與架構...... - 5 -
2.1依對數螺旋設計變頻模式...... - 5 -
2.2電流模式電刺激器...... - 7 -
2.3微控制器簡介...... - 8 -
2.4複雜可程式邏輯裝置簡介...... - 8 -
2.5交換式電源簡介...... - 8 -
2.6系統架構與流程圖...... - 10 -
2.7 計時模組...... - 12 -
2.8中斷...... - 14 -
第三章 硬體與邏輯電路設計...... - 16 -
3.1電流模式開關控制IC UC3845...... - 16 -
3.2開關控制電路...... - 18 -
3.3 CPLD邏輯電路...... - 20 -
3.4硬體電路...... - 25 -
第四章 量測與分析...... - 29 -
4.1人體皮膚阻抗等效模型...... - 29 -
4.2訊號分析...... - 30 -
4.3輸出波形...... - 40 -
第五章 結論與未來展望...... - 42 -
5.1結論...... - 42 -
5.2未來展望...... - 42 -
參考文獻...... - 43 -
Extended Abstract...... - 45 -

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