一种集成高精度温度传感器的RFID标签芯片
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摘要
为改善生鲜物流中温度测量精度,同时兼顾系统成本,提出了一种基于内置高精度温度传感器的UHF RFID标签芯片.温度传感器采用了电流驱动振荡电路和负载电容阵列校正技术,相比于需同时校正电流和电阻的传统方法,新结构具有控制逻辑简单、线性度好、匹配性好、可靠性高的优点;改进了标签信号解调电路,节约了87%的电路模块面积.TSMC 0.18μm 1P6MCMOS工艺下,芯片面积为0.8 mm~2,传感器面积为0.05 mm~2,在0℃到50℃温度范围内,测量精度±0.3℃,芯片平均功耗14μW.
To improve accuracy of temperature measurement and system cost during cold chain transportation, a new UHF RFID tag IC with high precision temperature sensor is presented in this paper. A temperature sensor driven by PTAT current and constant current, which only calibrated by load capacitor array is adopted in this paper.Compared with traditional method, proposed circuits perform better on control simplicity, linearity, matching, and reliability. Improved demodulate block saves silicon up to 87% compared to traditional way. The IC is fabricated on TSMC 0.18 μm 1 P6 M CMOS process, in which total area and sensor area are 0.8 mm~2 and 0.05 mm~2 separately. Total power consumption is 14 μW. The temperature sensing accuracy is ±0.3℃ from 0℃to 50℃.
To improve accuracy of temperature measurement and system cost during cold chain transportation, a new UHF RFID tag IC with high precision temperature sensor is presented in this paper. A temperature sensor driven by PTAT current and constant current, which only calibrated by load capacitor array is adopted in this paper.Compared with traditional method, proposed circuits perform better on control simplicity, linearity, matching, and reliability. Improved demodulate block saves silicon up to 87% compared to traditional way. The IC is fabricated on TSMC 0.18 μm 1 P6 M CMOS process, in which total area and sensor area are 0.8 mm~2 and 0.05 mm~2 separately. Total power consumption is 14 μW. The temperature sensing accuracy is ±0.3℃ from 0℃to 50℃.
引文
[1] CHEN N.The current situation and the countermeasures of China′s cold chain logistics development [J].Logistics Engineering and Management,2017,39(1):14-15.
[2] MARWANTO A,ALIFAH S.Temperature and humidity monitory on IoT based shipment tracking [J].Journal of Telematics and Informatics,2018,6(1):27-36.
[3] 陈晖,景为平,一种面向无源RFID的新型高精度温度传感器 [J].微电子学,2016,46(2):240-246.
[4] 赵宇佳,姜汉钧,张羊,等,一种超低功耗高精度温度传感器芯片设计 [J].微电子学与计算机,2015,32(12):40-43.
[5] Tran N,Lee B,Lee W,Development of long-range UHF-band RFID tag chip using schottky diodes in standard CMOS technology.IEEE RFIC Symposium,2007:281-283.
[6] BERGERET E,GAUBERT J,PANNIER P.Standard CMOS voltage multiplier sarchite ctures for UHFRFID applications:study and implementation[C]//IEEE International Conference on RFID.Texas,USA,2007:115-117.
[7] CHAN C,PUN K,LEUNG K,Et al.A low-power continuously-calibrated clock recovery circuit for UHF RFID EPC Class-1 Generation-2 transponders [J].IEEE JSSC,2010,45(3):587-599.
[8] CHEN L,WU S,MAO L,et al.Design of an analog front-end for passive UHF RFID transponder IC [J].Chinese Journal of Semiconductors,2007,28(5):686-690.
[9] ZHENG S,WANG N.A novel ultra low power temperature sensor for UHF RFID tag chip[C]// 2007 IEEE Asian Solid-State Circuits Conference (ASSCC 2007).Jeju City,Korea.2007:464-467.
[10] SUNDARESAN K,ALLEN E,AYAZI F.Process and temperature compensation in a 7MHz CMOS clock oscillator[J] .IEEE JSSC,2006,41(2):433-442.
[11] SHAN H,PETERSON J,TSAI M.A low power CMOS temperature sensor frontend for RFID tags[C]// IEEE 2018 IEEE 18th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF) ,Anaheim,CA,USA ,IEEE conference on 18th SiRF,2018:15-18.
[12] CHEN Z,DENG F,HE Y.A self-powered RFID sensor tag for long-term temperature monitoring in substation[J].Electr Eng Technol,2018,13(1):501-512.
[13] TAN J,SATHYAMURTHY M,ROLAPP A.A fully passive RFID temperature sensor SoC with an accuracy of ±0.4°C (3σ) from 0°C to 125°C[C]//IEEE International Conference on RFID,2018,DOI:10.1109/RFID.2018.8376198.
[2] MARWANTO A,ALIFAH S.Temperature and humidity monitory on IoT based shipment tracking [J].Journal of Telematics and Informatics,2018,6(1):27-36.
[3] 陈晖,景为平,一种面向无源RFID的新型高精度温度传感器 [J].微电子学,2016,46(2):240-246.
[4] 赵宇佳,姜汉钧,张羊,等,一种超低功耗高精度温度传感器芯片设计 [J].微电子学与计算机,2015,32(12):40-43.
[5] Tran N,Lee B,Lee W,Development of long-range UHF-band RFID tag chip using schottky diodes in standard CMOS technology.IEEE RFIC Symposium,2007:281-283.
[6] BERGERET E,GAUBERT J,PANNIER P.Standard CMOS voltage multiplier sarchite ctures for UHFRFID applications:study and implementation[C]//IEEE International Conference on RFID.Texas,USA,2007:115-117.
[7] CHAN C,PUN K,LEUNG K,Et al.A low-power continuously-calibrated clock recovery circuit for UHF RFID EPC Class-1 Generation-2 transponders [J].IEEE JSSC,2010,45(3):587-599.
[8] CHEN L,WU S,MAO L,et al.Design of an analog front-end for passive UHF RFID transponder IC [J].Chinese Journal of Semiconductors,2007,28(5):686-690.
[9] ZHENG S,WANG N.A novel ultra low power temperature sensor for UHF RFID tag chip[C]// 2007 IEEE Asian Solid-State Circuits Conference (ASSCC 2007).Jeju City,Korea.2007:464-467.
[10] SUNDARESAN K,ALLEN E,AYAZI F.Process and temperature compensation in a 7MHz CMOS clock oscillator[J] .IEEE JSSC,2006,41(2):433-442.
[11] SHAN H,PETERSON J,TSAI M.A low power CMOS temperature sensor frontend for RFID tags[C]// IEEE 2018 IEEE 18th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF) ,Anaheim,CA,USA ,IEEE conference on 18th SiRF,2018:15-18.
[12] CHEN Z,DENG F,HE Y.A self-powered RFID sensor tag for long-term temperature monitoring in substation[J].Electr Eng Technol,2018,13(1):501-512.
[13] TAN J,SATHYAMURTHY M,ROLAPP A.A fully passive RFID temperature sensor SoC with an accuracy of ±0.4°C (3σ) from 0°C to 125°C[C]//IEEE International Conference on RFID,2018,DOI:10.1109/RFID.2018.8376198.