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1626 JOURNAL OF COMPUTERS, VOL. 8, NO. 6, JUNE 2013 REFERENCES [1] G. Ateniese, K. Fu, M. Green, and S. Hohenberger. Improved proxy re-encryption schemes with applications to secure distributed storage. In ACM Transactions on Information and System Security, no. 1, pages 1–30. 2006. [2] M. Blaze, G. Bleumer and M. Strauss. Divertible protocols and atomic proxy cryptography. In EUROCRYPT 1998, volume 1403 of LNCS, pages 127–144, 1998. [3] D. Boneh, E. Goh, T. Matsuo. Proposal for P1363.3 Proxy Re-encryption. http://grouper.ieee.org/groups/1363/IBC /submissions/NTTDataProposal-for-P1363.3-2006-09- 01.pdf. [4] D. Boneh, M. Franklin. Identity based encryption from the Weil pairing. In CRYPTO 2001, volume 2139 of LNCS, pages 213–229, 2001. [5] D. Boneh and X. Boyen. Efficient Selective-id Secure Identity Based Encryption without Random Oracles. In EUROCRYPT 2004, volume 3027 of LNCS, pages 223– 238, 2004. [6] D. Boneh and X. Boyen. Secure Identity Based Encryption without Rando Oracles. In CRYPTO 2004, volume 3152 of LNCS, pages 443–459, 2004. [7] D. Boneh, B. Lynn, and H. Shacham. Short signatures from the Weil Pairing. In ASIACRYPTO 2001, volume 1976 of LNCS, pages 514–532, 2004. [8] M. Barbosa, L. Chen, Z. Cheng. SK−KEM: An Identity−based Kem. http://grouper.ieee.org/groups/1363/IBC/submissions/Barbosa- SK-KEM-2006-06.pdf. [9] R. Canetti, S. Halevi and J. Katz. A forward-secure publickey encryption scheme. In EUROCRYPT 2003, volume 2656 of LNCS, pages 255–271, 2003. [10] R. Canetti and S. Hohenberger. Chosen ciphertext secure proxy re-encryption. In ACM CCS 2007, pages 185–194, 2007. [11] C. Chu and W. Tzeng. Identity-based proxy re-encryption without random oracles. In ISC 2007, volume 4779 of LNCS, pages 189–202, 2007. [12] L. Chen and Z. Cheng. Security Proof of Sakai- Kasahara’s Identity-Based Encryption Scheme. http://eprint.iacr.org/2005 /226.pdf, 2005. [13] Y. Dodis. and A. Ivan Proxy cryptography revisited. In Internet Society (ISOC): NDSS 2003, 2003. [14] E. Fujisaki and T. Okamoto. Secure integration of asymmetric and symmetric encryption schemes. In CRYPTO 1999, volume 1666 of LNCS, pages 535–554, 1999. [15] M. Green and G. Ateniese. Identity-based proxy reencryption. In ACNS 2007, volume 4521 of LNCS, pages 288–306, 2007. [16] V. Goyal. Reducing Trust in Identity Based Cryptosystems. In CRYPTO 2007, volume 4622 of LNCS, pages 430–447, 2007. [17] C. Gentry. Practical Identity-Based Encryption without Random Oracles. In EUROCRYPT 2006, volume 4004 of LNCS, pages 445–464, 2006. [18] E. Goh and T. Matsuo. Proposal for P1363.3 Proxy Re-encryption. http://grouper.ieee.org/groups/1363/IBC /submissions/NTTDataProposal-for-P1363.3-2006-08- 14.pdf. [19] S. Hohenberger. Advances in Signatures, Encryption, and E-Cash from Bilinear Groups. Ph.D. Thesis, MIT, May 2006. [20] S. Hohenberger, G. N. Rothblum, a. shelat, V. Vaikuntanathan. Securely Obfuscating Re-encryption. In TCC 2007, volume 4392 of LNCS, pages 233–252, 2007. [21] M. Jakobsson. On quorum controlled asymmetric proxy re-encryption. In PKC 1999, volume 1560 of LNCS, pages 112–121, 1999. [22] L. Ibraimi, Q. Tang, P. Hartel, and W. Jonker. A typeand-identity-based proxy re-encryption scheme and its application in healthcare. In SDM 2008, volume 5159 of LNCS, pages 185–198, 2008. [23] M. Luo, C. Zou, J. Xu. An efficient identity-based broadcast signcryption scheme. In Journal of Software, pages 366-373, Vol. 7, Num. 2, 2012. [24] B. Libert and D. Vergnaud. Unidirectional chosen ciphertext secure proxy re-encryption. In PKC 2008, volume 4939 of LNCS, pages 360–379, 2008. [25] B. Libert and D. Vergnaud. Tracing malicious proxies in proxy re-encryption. In Pairing 2008, volume 5209 of LNCS, pages 332–353, 2008. [26] T. Matsuo. Proxy re-encryption systems for identity-based encryption. In PAIRING 2007, volume 4575 of LNCS, pages 247–267, 2007. [27] L. Martin(editor). P1363.3(TM)/D1, Draft Standard for Identity-based Public Cryptography Using Pairings, May 2008. [28] J. Shao, D. Xing and Z. Cao, Identity-Based Proxy Rencryption Schemes with Multiuse, Unidirection, and CCA Security. Cryptology ePrint Archive: http://eprint.iacr.org/2008/103.pdf,2008. [29] R. Sakai and M. Kasahara. ID based cryptosystems with pairing on elliptic curve. Cryptology ePrint Archive, Report2003/054. 2003. [30] Q. Tang, P. Hartel and W Jonker. Inter-domain identitybased proxy re-encryption. In INSCRYPT 2008, volume 5487 of LNCS, pages 332–347, 2008. [31] Q. Tang. Type-based proxy re-encryption and its construction. In INDOCRYPT 2008, volume 5365 of LNCS, pages 130–144, 2008. [32] Q. Wu, W. Wang. New identity-based broadcast encryption with constant ciphertexts in the standard model. In Journal of Software, 1929-1936 Volume 6, Number 10, 2011. [33] X. A. Wang, X. Y. Yang, J. R. Hu. CCA-Secure Identity Based Proxy Re-encryption Based on a Variant of BB1 IBE. The 2010 Second International Conference on Networks Security, Wireless Communications and Trusted Computing (NSWCTC 2010), IEEE Press, (Vol.2) 509- 513, 2010. [34] Y. Ding, X. A. Wang. Identity Based Proxy Re-encryption Based on a Variant of BB1 Identity Based Encryption. The 2010 Second International Conference on Networks Security, Wireless Communications and Trusted Computing (NSWCTC 2010), IEEE Press, (Vol.2) 509-513, 2010. [35] L. D. Zhou, M. A. Marsh, F. B. Schneider, and A. Redz. Distributed blinding for ElGamal re-encryption. TR 1924, Cornell CS Dept., 2004. Jindan Zhang was born in April. 27th, 1983. She obtained her master degree from University of Shaanxi Science and Technology. Now she is a lecturer in Xianyang Vocational Technical College. Her main research interests includes cryptography, and information hiding. Xu An Wang was born in Feb. 23th, 1981. He obtained his master degree from University of Chinese Armed Police Force. Now he is an associate professor in the same University. His main research interests includes public key cryptography and information security. Xiaoyuan Yang was born in Nov. 12th, 1959. He obtained his master and bachelor degree from Xidian University. Now he is a professor in the Engineering University of Chinese Armed Police Force. © 2013 ACADEMY PUBLISHER
JOURNAL OF COMPUTERS, VOL. 8, NO. 6, JUNE 2013 1627 Corn Moisture Measurement using a Capacitive Sensor Hongxia Zhang, Wei Liu*, Boxue Tan, Wenling Lu School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo, China, 255049 Abstract—Corn moisture content is the main factor of effecting corn safe transportation and storage, and is also an indispensable measurement part when it is used to feed, food and industry. Due to large particle size, corn will produce large gap during measuring moisture content. Because air has much influence on dielectric constant of the device, moisture content is not precision. In all kinds of corn moisture measurement methods, capacitance method becomes the main method with simple structure, low cost and online measurement. This paper designs a sensor for measuring the corn moisture that uses a capacitance detection circuit based on the relationship between the capacitance and the dielectric constant of the corn. In addition, different operating modes of the detection circuit are analyzed. The relationship between the moisture content of corn and the sensor capacitance is obtained through experiment and a binary cubic equation is obtained by the least squares fitting method. Index Terms—corn moisture sensor, detection circuit measurement, capacitive I. INTRODUCTION The moisture component of a corn cell is essential for maintaining its life activities. Furthermore, the moisture content must not be too high or too low. Higher moisture contents will cause corn mildew and other biochemical reactions. Lower moisture contents may destroy organic material and damage the dry matter. Hence, the measurement of moisture levels is important for the safe storage of corn [1,2] . The traditional method for measuring moisture content uses an oven which leads to high accuracy but because it is time-consuming and involves a complicated procedure, it is not suitable for field use. Various techniques for indirect testing methods have been studied for replacing the traditional oven method at home and abroad, e.g. the use of conductance, capacitance, X-rays, neutrons, and microwaves. These methods allow quick measurements and are easily applied under field conditions [3] . The most common method is the capacitive method which has advantages of low cost, small volume and fast detection, although it lacks high precision. Since the 1960s, many countries’ researchers attached great importance to the development of grain moisture measurement technology. Along with the measurement methods of grain moisture emerged, advanced grain moisture measurement methods and the instruments are being promotion at home and abroad. TABLE I and TABLE II show the company produced the measuring corn grain moisture instruments. TABLE I MOISTURE METER PRODUCED BY FOREIGN COMPANY Capacitance method Conductance method Decompression Infrared method Microwave method Carlfee Hugh method Capacitance method Conductance method Finland Humicoy company produced the WILE100 moisture meter [4] Japan KETT institute developed high frequency capacitive moisture meter European control company produced the CM - 4 type moisture meter A Japanese enterprise produced VME type moisture meter British infrared engineering company produced the SM4 infrared moisture meter Japan QianYe institute produced the IR-AM300 infrared moisture meter A Japan company produced the FD - 230, FD - 310 and FD - 600 infrared moisture meter The battery motor manufacturing produced online microwave moisture meter A Germany company produced continuous moisture meter Japan Kyoto electronic company produced the MKA - 3 type moisture meter TABLE II MOISTURE METER PRODUCED BY DOMESTIC COMPANY Infrared method East food inspection produced the SC – 5F corn moisture meter Jinan detecting instrument company produced ly - 8 capacitive moisture meter and LDS – 1G grain moisture meter Shanghai Qingpu testing instrument company produced LDS-IF , LDS-2,LDS – IA and LDS - ID Tianjin science and technology company produced SFY-60 corn rapid moisture meter Beijing technology company produced high frequency capacitive grain moisture meter 81W1PM-8188 and grain moisture meter BHC1 - PM818 Beijing huatai instrument technology company produced JCY13 / SFY -60d moisture meter Wuhan electronic instrument produced LSKC - 4 type grain moisture meter Hunan instrument factory balance instrument factory produced inserted link type moisture meter Hunan instrument factory balance instrument factory developed SCT - 3 moisture meter Xi’an light ministry of light industry developed 3 YBSIA four beam infrared moisture meter Guangdong test analysis and wuhan combine automation instrument developed WSHT - 102 type infrared moisture meter Tsinghua university developed near infrared moisture measurement instrument has completed the principle prototype *Corresponding Author: weikey@sdut.edu.cn © 2013 ACADEMY PUBLISHER doi:10.4304/jcp.8.6.1627-1631
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Page 261: Call for Papers and Special Issues
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