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US 10,416,191 B2Granted
Method for validation of a fuse head in an electronic detonator
AssigneeMaxamcorp Holding, S.L.
InventorsLuis Diego Montaño Rueda, Hendrik Van Niekerk, José Manuel Botija González, Íñigo Zabalo Arena
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Abstract
A method for the validation of a fuse head in an electronic detonator is disclosed, the method including measuring at least once a first charge time; activating a switching means to a second position to replace a reference resistor in an RC circuit with the fuse head; measuring at least once a second charge time; and determining the deviation of the second charge time from the first charge time.
Claims14
A method for the validation of a fuse head in an electronic detonator, said detonator comprising:
- a reference resistor,
- a fuse head,
- at least one capacitor, and
- switching means, wherein
- in a first position of the switching means, the reference resistor is connected to the at least one capacitor forming a first RC circuit, and
- in a second position of the switching means, the fuse head is connected to the at least one capacitor forming a second RC circuit;
- and
- wherein the method comprises the following steps:
- a) measuring at least once a first charge time t1, the first charge time being the time required for the at least one capacitor to reach a specified charge value in the first RC circuit, when the switching means is in the first position,
- b) activating the switching means to the second position,
- c) measuring at least once a second charge time t2, the second charge time being the time required for the at least one capacitor in the second RC circuit to reach the same specified charge value as specified in step a), and
- d) determining if the second charge time is within a range (t1−λ1, t1+λ2), t1 being the first charge time, t1−λ1 being a first validation threshold and t1+λ2 being a second validation threshold.
9 more elements
Dependencies are inferred from the claim text.