The invention relates to an electronic device for training a grenade, which comprises a release safety switch, a power switch, a piezoelectric trigger circuit, a time
delay circuit, a self-destruction time circuit, an OR gate, two AND gates, a starting
signal transmission circuit, a transmitting antenna, a receiving antenna, a starting
signal receiving circuit, an explosion sound
simulation circuit transcribed by a speech
chip, a
loudspeaker, an explosion sound transmission circuit, an explosion sound receiving circuit, an accidentally drop safety circuit and the like. When the grenade touches down or bursts in air in a time
delay way, the receiving circuit outside the grenade receives a starting
signal transmitted by the transmission circuit on the grenade, a speech
chip circuit is started after
demodulation, and explosion sound is sent out by the
loudspeaker. When the grenade touches down or bursts in the air in the time
delay way, the explosion sound which is transmitted on the grenade and is already transcribed on the speech
chip of the explosion sound
simulation circuit in advance is demodulated and amplified by the receiving circuit outside the grenade. The invention is also provided with the accidentally drop safety circuit and achieves the effect of lifelike
simulation.