应用于无线传感网的低功耗CMOS温度传感器
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摘要
为了在较大的温度范围内改善传感器的线性并降低功耗,提出一种新的应用于无线传感网的频率输出温度传感器。采用了多谐振荡器电流转频率电路,由一个双向电流积分器组成,由电压窗口比较器驱动,单独的1.2 V供给电压,并利用低成本的0.18mm CMOS技术制作。实验结果表明,在-40℃到+120℃的温度范围内,该温度传感器表现出高线性的特点,实现了±1℃的误差,敏感性分别为340 Hz/℃,功耗为2.1m W,面积为0.02 mm~2,十分适合无线传感网的各种应用。
In order to improve the linearity of the sensor and reduce the power consumption,a new frequency outputtemperature sensor is proposed for wireless sensor networks. Using the current multi harmonic oscillator frequencycircuit,mainly composed of a bidirectional current integrator,driven by a window voltage comparator,by a single 1.2V supply voltage,and the low cost of 0.18 mm CMOS technology production. Experimental results show that in-40 ℃to 120 ℃ temperature range,the temperature sensor presented the characteristics of high linearity,realized the er-ror of ±1 ℃ and sensitivity were 340 Hz/℃,power consumption is less than 2.1 m W,area of 0.02 mm2,is very suitablefor wireless sensor networks for a variety of applications.
In order to improve the linearity of the sensor and reduce the power consumption,a new frequency outputtemperature sensor is proposed for wireless sensor networks. Using the current multi harmonic oscillator frequencycircuit,mainly composed of a bidirectional current integrator,driven by a window voltage comparator,by a single 1.2V supply voltage,and the low cost of 0.18 mm CMOS technology production. Experimental results show that in-40 ℃to 120 ℃ temperature range,the temperature sensor presented the characteristics of high linearity,realized the er-ror of ±1 ℃ and sensitivity were 340 Hz/℃,power consumption is less than 2.1 m W,area of 0.02 mm2,is very suitablefor wireless sensor networks for a variety of applications.
引文
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[10]Jeong S,Foo Z,Lee Y,et al.A Fully-Integrated 71 n W CMOS Temperature Sensor for Low Power Wireless Sensor Nodes[J].IEEE Journal of Solid-State Circuits,2014,49(8):1682-1693.
[11]曾梓臻,夏同生,王翔.一种CMOS温度传感器的设计及其应用[J].微电子学,2014(5):606-609.
[12]张剑,徐东明,赵新毅.数字温度传感器的带隙基准电压源设计[J].中国集成电路,2014(9):46-51.
[13]孙鹏,钱承山,李俊,等.基于无线传感技术的接触网导线接头及换相点温度监测系统[J].电子器件,2014,37(2):292-296.
[14]杨龙,刘清惓.多路温湿度传感器采集及显示系统设计[J].电子器件,2014,37(2):297-301.
[2]Sardini E,Serpelloni M.Self-Powered Wireless Sensor for Air Temperature and Velocity Measurements with Energy Harvesting Capability[J].IEEE Transactions on Instrumentation&Measurement,2011,60(5):1838-1844.
[3]Pursula P,Marttila I,Nummila K,et al.High Frequency and Ultrahigh Frequency Radio Frequency Identification Passive Sensor Transponders for Humidity and Temperature Measurement within Building Structures[J].IEEE Transactions on Instrumentation&Measurement,2013,62(9):2559-2566.
[4]Pertijs Michiel A P,Makinwa Kofi A A,Huijsing Johan H.A CMOS smart temperature sensor with a 3σinaccuracy of±0.1℃from-55℃to 125℃[J].IEEE Journal of Solid-State Circuits,2005,40(12):2805-2815.
[5]Souri K,Chae Y,Makinwa K A A.A CMOS Temperature Sensor With a Voltage-Calibrated Inaccuracy of 0.15 C(3)From 55 C to125 C[J].IEEE Journal of Solid-State Circuits,2013,48(1):292-301.
[6]林荣,蔡敏,黄伟朝,等.新型低功耗CMOS片上温度传感器设计[J].传感技术学报,2011,24(7):981-985.
[7]Sheu M L,Hsu W H,Tsao L J.A Capacitance-Ratio-Modulated Current Front-End Circuit With Pulsewidth Modulation Output for a Capacitive Sensor Interface[J].IEEE Transactions on Instrumentation&Measurement,2012,61(2):447-455.
[8]陈刚,解玉凤,林殷茵.一种新型高精度宽电压范围的CMOS温度传感器[J].固体电子学研究与进展,2013(2):175-178.
[9]顾晓丽,刘一清,李中楠.开关式低压CMOS温度传感器的设计与实现[J].半导体技术,2012(8):590-593,611.
[10]Jeong S,Foo Z,Lee Y,et al.A Fully-Integrated 71 n W CMOS Temperature Sensor for Low Power Wireless Sensor Nodes[J].IEEE Journal of Solid-State Circuits,2014,49(8):1682-1693.
[11]曾梓臻,夏同生,王翔.一种CMOS温度传感器的设计及其应用[J].微电子学,2014(5):606-609.
[12]张剑,徐东明,赵新毅.数字温度传感器的带隙基准电压源设计[J].中国集成电路,2014(9):46-51.
[13]孙鹏,钱承山,李俊,等.基于无线传感技术的接触网导线接头及换相点温度监测系统[J].电子器件,2014,37(2):292-296.
[14]杨龙,刘清惓.多路温湿度传感器采集及显示系统设计[J].电子器件,2014,37(2):297-301.