Driver fatigue is a key factor of accident. Recently, there is a system using RFID combined with a wireless accelerometer sensor module used for doze detector has become an important issue. It is because that about ten percent of the dead drivers were caused by tired driving. The goal of this study was to develop the feasibility of a doze detector. In this work, we develop a brand new system which was a blood pressure detector sensor combing RFID's Tag to get a series data for doze alarm. We present that the blood pressure and heartbeat were used to monitor the driver's spirit state is the best method for doze alarm. In this study, we use the palpitation, the pulse sensory element, by with the wireless radio frequency label's union, obtains a series of body principle signal the data, develops a set of feasible against sleepy warning system. Because palpitation in sleep period has the periodic change, this article the analysis human body puts in order by standard distance method of difference (SDNN) under the mental murky condition, the system would start the warmer system and try to awaken the driver.