- 學位論文
低功率多通道污水酸鹼值遙測系統實現與無線傳輸機晶片設計
Implementation of Low Power Multi-channel Telemetry System for pH-determination of Polluted Water and Chip Design of Transmitter Module
摘要
摘 要 本論文主要的目的在於將低功率多通道污水酸鹼值遙測系統予以完整呈現，並驗證以自行開發之無線傳輸機取代商用無線傳輸模組之可行性。論文中詳細記錄整個系統設計流程、系統驗證方式、電路工作原理、電路模擬結果與晶片量測數據。 在系統設計方面，藉由波蘭科學院所提供之Si3N4 pH-ISFET為感測器，結合本實驗室開發之定汲源電壓/定汲源電流-橋式源極浮接組態讀出電路與雙斜率類比至數位轉換器，並配合商用遙測模組，實現一以微控器為基礎之智慧型陣列式污水酸鹼值遙測系統。 本論文所設計之無線傳輸模組晶片，其電路主體由調變電路-數位控制石英振盪器(DCXO)、倍頻電路-鎖相迴路(PLL)、整數-N除頻器(Integral-N Divider)與功率放大器所構成。數位控制石英振盪器、鎖相迴路與整數-N除頻電路皆已使用TSMC 0.35μ m Mixed Signal 2P2M Polycide 3.3 V製程技術完成晶片之製作與量測。
並列摘要
Abstract A low power multi-channel telemetry system for pH-determination of polluted water and a chip design of transmitter module are presented. This thesis presents a low-power telemetric prototype design for ISFET-based sensor pair readout applications. The specific ISFETs used for linear sensor array was integrated with the telemetry system together to form a low-power remote monitoring system in H+ sensing. The major blocks of the system consist two-channel dual-slope Analog to digital converter (ADC), constant-voltage constant-current (CVCC) type read-out circuit, and commercial wireless module. The in-vitro evaluation of the on-board prototype exhibits its functional performance In transmitter chip design aspects, the main circuit includes modulator-Digital controlled crystal oscillator (DCXO), Frequency Multiplier-phase locked loop (PLL), integral-N divider, and power amplifier. The DCXO, PLL and integral-N divider are fabricated with the TSMC 0.35μ m Mixed Signal 2P4M Polycide CMOS technology. The measurement results well conform to the initial simulation specification.