TDMA手机无规律关机现象的理论分析

Theoretic Analysis on Disorder Shutdown Phenomenon of TDMA Mobile Phone

TDMA手机在电池供电的情况下,由于内部稳压电路的作用,使用中电流的变化、电压的波动不会引起手机关机。但在电池内阻变大的情况下,以TDMA工作方式的特殊性决定了发射电路不定时的工作是引起手机无规律关机的主要原因。文中结合通信的实际过程,总结出不同状态、同一状态不同的时刻、同一状态不同位置三种情况下可能发生突发性关机的机理,对理解、判断、排除手机不定时关机的故障有一定的参考价值。

As a result of internal voltage-stabilizer circuit function in the battery power supply, the current change or the voltage undulation of the mobile phone cannot cause the handset close-down. However, in the situation of battery internal resistance fill-out, the working particularity of TDMAhas the indefinite work of transmission circuit, which is the primary cause of mobile phone＇s disorder shutdown. Based on the actual process of communication this paper discusses the mechanisms of abrupt shutdown under three situations, that is, the different condition, the identical condition in different time, the identical condition in different position. This would be of certain reference values for comprehending, judging and eliminating the fault of mobile phone＇s abrupt shutdown.