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US 2025/0027391 A1Published application
Addressable Switch with Initiator Detection and Initiator Resistance Measurement
AssigneeHunting Titan, Inc.
InventorsTimothy Vriend, Sridhar Rajaram
Life of this patent
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Abstract
A method and apparatus for electrically detecting the presence of an initiator in a downhole tool by measuring the resistance of an initiator, electrically isolating the initiator from a power source, supplying current to the initiator less than the current necessary to initiate the initiator, detecting voltage through the initiator, and calculating the resistance of the initiator.
Claims20
A method for detecting current through an initiator comprising:
- supplying current to the initiator, wherein the supplied current is less than the current necessary to initiate the initiator;
- detecting whether current is flowing through the initiator;
- and
- toggling a digital input of a switch corresponding to whether or not current is detected flowing through the initiator.
1 more element
An apparatus for detecting current through an initiator comprising:
- An initiator in series with a high-impedance resistive divider, the high impedance resistive divider further comprising a plurality of resistors in series that are in parallel with a low side initiator voltage isolation switching device, wherein the initiator voltage isolation switching device allows a small amount of electrical current to flow through the initiator and the resistive divider can toggle a digital input of the switch's MCU between high (on) or low (off) depending on the current detection device detecting current passing through the initiator.
Dependencies are inferred from the claim text.