- 學位論文
應用接觸點電阻式記憶元件之新型溫度感測器
Application of Temperature Dependent Characteristic of the Random Telegraph Noise on Contact RRAM
若您是本文的作者，可授權文章由華藝線上圖書館中協助推廣。
摘要
隨著無線感測網路的蓬勃發展，監測環境變數和電子智慧控制系統也因而開創了另一個春天。現今的CMOS邏輯技術能將無線感測之技術應用於單一晶片上，使得成本降低許多，且在面積、重量、和整合方面亦有所突破。使用電子智慧控制系統執行操作或是資料蒐集時，最普遍考慮到之環境因素就是溫度；傳統溫度感測晶片之功率損耗及使用面積卻往往造成了突破上的瓶頸。 傳統的溫度感測訊號源採用隨正比於絕對溫度之特性，利用電路設計將因溫度變化電流，透過電壓差或者是電流差經過換算後獲得環境溫度。溫度感測元件設計，需考量許多誤差來源以得到正確之溫度數值；如元件出廠時造成的匹配問題，放大器本身的偏差電壓，甚至是在後續數位/類比轉換時解析度的考量。 本論文透過接觸點電阻式記憶元件所產生的隨機電報雜訊當溫度感測之訊號源，與傳統溫度感測訊號源相比，可有效降低電路面積及功率損耗。考慮隨機電報雜訊本身的特性誤差，只需在出廠時做出校正表，在元件應用前提早做出校正，就能有效提高使用上的便利性。此新型溫度感測器還有另一優勢，接觸點電阻式記憶元件能與標準CMOS邏輯製程完全相容，不需要額外的光罩覆蓋或製程步驟。本論文所提出之新的溫度感測方法，在低壓低功率應用上可行性極高，將有望在未來環境溫度感測應用上占有一席之地。
並列摘要
Wireless Sensor Networks (WSNs) have become the channel for establishing the interaction between environmental parameters and smart electronic control system. The implementation of WSN sensor nodes on a single chip through the most prevailing CMOS logic process can provide low-cost, integrated, small, and lightweight sensor modules. Temperature is one the most common environmental parameters in these smart electronic systems for control or data collection purposes. Low power consumption and small IC area both are key challenges for these sensing modules mostly run on limited energy source. Traditional temperature sensor adopts the detection source with parameters of proportional to the absolute temperature (PTAT). These temperature dependent parameters are the cord in this sensor circuits. In designing a temperature sensor, one needs to consider many sources of errors due to process variations, such as, devices miss-matches and the offset voltage of amplifiers. By establishing the relationship between CRRAM’s random telegraph noise (RTN) signal and temperature, a new temperature sensing scheme is demonstrated for the first time. Comparing to traditional detection source, this new sensing scheme could reduce the circuit area and power consumption. While the variation of the RTN signal could be calibrated by an embedded memory. This new sensing scheme is very suitable to low-power low-speed sensor modules.
參考文獻
[1]Shervin Sharifi, Tajana ˇSimuni´c Rosing, “Accurate Direct and Indirect On-Chip Temperature Sensing for Efficient Dynamic Thermal Management”, Computer-Aided Design of Integrated Circuit and Systems, IEEE, pp. 1586 – 1599, Oct. 2010.
[2]Jianguang Chen, Yuhua Cheng, Shaolong Liu, “A High-Accuracy Temperature Sensor With An Inaccuracy of ±1°C From -55°C to 125 °C”, ICSICT, pp. 1444 – 1446, Nov. 2010.
[3]Tzuu-Shaang Wey, Te-Hsuan Liu, Min-Chuan Lin, Ruey-Lue Wang,Chiung-Min Yeh, Chen-Wei Yu, Chen-Fu Lin, Hann-Huei Tsai, “ A CMOS Temperature Sensor Using Cascoded PNP Transistors”, in IBICA, pp. 233-236, Dec 2011.
[4]Zito F., Fragomeni L., Aquilino F., Della Corte F.G. “Wireless Temperature Sensor Integrated Circuit with On-Chip Antennas”, in IEEE, pp. 1368-1373, Apr 2010.
[5]Sasaki, M.; Ikeda, M. ; Asada, K.,”A Temperature Sensor With an Inaccuracy of -1/+0.8℃ Using 90-nm 1-V CMOS for Online Thermal Monitoring of VLSI Circuit”, in Semi. Manu, IEEE, pp. 201-208, May 2008.