An sleeping timing equipment based on pulse sensor HK2000-A is designed.it gathers the signal of heart rate of sleep person and judges the sleep state of sleep person

and starts the efficient timer.The system can send alarm signal voluntarily to awaken sleeping person when the sleeping time of sleep person reaches to setting

with realization efficiency is timing.The system adopts AT89C2051 tiny processor kernel

and external develops heart rate sensor circuit

keyboard circuit

development shows circuit and alarm circuit.It measures the real time clock and unusual heart rate circuit and the alarm of the timing efficiency to combine.