The encapsulation of one explosion is provided for seismic prospecting comprising a seismic charge and a code switch, for selecting that seismic charge for explosion. One fireset is operatively coupled to the code switch for receiving discharge voltage at the beginning via code switch and for generating an actuation voltage. Such as actuation voltage can be produced by the magnitude of increase firing voltage. Actuation voltage is provided to a priming device, is the equipment comprising high explosive. The example of one priming device includes an exploding bridge wire detonator, an exploding foil initiator detonator and semiconductor bridge hussy's equipment. The encapsulation of such explosion can be arranged on a kind of system for seismic prospecting comprising a basic unit, for providing the selection, firing and the encapsulation for triggering signal and multiple explosions that are located at space interval along the earth's surface.
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