6Sun B H, Li J F, Liu Q. Zh. Polarisation-Diversity Antenna for TPMS Application [ J ]. Electronics Letters, May, 2007, 43 ( 11 ) : 603 - 605.
7Leng Y, Li Q x, Dong T L. Wheel Antenna of Wireless Sensors in Automotive Tire Pressure Monitoring System [ C ]//Wireless Communications, Networking and Mobile Computing, International Conference on, Sept. 2007 : 2755 -2758.
8Ikoma M, Hoshina Y K, Matsumoto I, et al. Self-Discharge Mechanism of Sealed-Type Nickel/Metal-Hydride Battery[ J ]. Journal of the Electrochemical Society, 1996, 143(6): 1904-1907.
9RENATA S A. Designer's Guide Lithium Batteries[ R]. 2007: 36 - 51.
10Anbuky A H, Pascoe P E. VRLA Battery State-of-Charge Estimation in Telecommunication Power Systems[ J]. IEEE Transactions on Industrial Electronics, Jun. 2000, 47(3) : 565 - 573.