Apparatus for low g-level vibrational pulse detection

Apparatus for monitoring vibrational pulse activity of an explosive detonator device, said vibrational pulse activity having generated when said explosive detonator is activated, said apparatus comprising:

• a diode bridge rectifier proximate to said explosive detonator device and acoustically coupled thereto for providing a voltage output when activations of explosive detonator device generates mechanical vibrations of very low g-level over a brief time interval,
• means coupled to said bridge rectifier means for amplifying said voltage output;
• timing means responsive to said amplified voltage output for monitoring the time which passes between the occurrence of a specified event, which precedes said vibrational pulse, and the occurrence of said vibrational pulse;
• latch means coupled between said amplifier means and said timing means for enabling said timing means to commence monitoring the passage of time when said specified event occurs, and for preventing said timing means from monitoring the passage of time when said diode bridge rectifier provides said voltage output;
• and
• means responsive to said amplified voltage output for providing notice when said explosive detonator generates said vibrational pulse.