摘要:
A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provide a conductive path in response to receipt of electrical energy; and an element moveable in response to application of an electrical energy. The micro-switch may be formed of microelectromechanical system (MEMS) technology or microelectronics technology.
摘要:
A microcavity structure. In an illustrative embodiment, the microcavity structure includes a first substrate, which has a region of interest. A second substrate with a perforation therein is bonded to the first substrate. The perforation coincides with the region of interest. In a specific embodiment, the first substrate is implemented via a Printed Circuit Board (PCB). The region of interest includes one or more circuit components, including an actuator, such as a bridgewire, thereon or therein. A smoothing layer is included between the PCB and the actuator. A bonding gasket adheres the first substrate to the second substrate. The perforation accommodates energetic material that is selectively ignited via the actuator.
摘要:
A detonator assembly for use with explosive devices includes a support structure, an exploding foil initiator mounted on the support structure, and a barrel attached to the support structure and adjacent the exploding foil initiator. The support structure may include a flex cable. An explosive is placed in the proximity of the exploding foil initiator.
摘要:
A semiconductor bridge (SCB) device. In one embodiment, the SCB device includes a laminate layer on top of an insulating material, wherein the laminate layer comprises a series of layers of at least two reactive materials, and wherein the laminate layer comprises two relatively large sections that substantially cover the surface area of the insulating material, and a bridge section joining the two relatively large sections. At least one conductive contact pad is coupled to at least one of the series of layers, wherein a predetermined current through the conductive contact pad causes the bridge section to initiate a reaction in which the laminate layer is involved. In one embodiment, the SCB device includes an integrated diode formed by an interface of the insulating material with another material, such as a metal.
摘要:
An integrated detonation element or firing element including a base member, e.g., a silicon member, and a reaction region associated therewith, is provided. The reaction region includes porous silicon and an oxidizing agent for silicon. An arrangement is provided with which a chemical reaction is initiated between the oxidizing agent and the porous silicon. The detonation or firing element is suitable principally for use in a microreactor; in a microbooster, e.g., for course correction of satellites; as a firing element in a gas generator for a belt tensioner or an airbag, e.g., in motor vehicles; or as a primer for the ignition of explosive charges.
摘要:
The firing apparatus for a gas generator of a restraint device in a vehicle has a firing chamber (1) filled with a pyrotechnic material (2). A semiconductor chip (6), in which in addition to a firing resistor (9) at least one circuit activating the latter is integrated, is arranged outside the firing chamber (1) in such a way that the thermal energy generated by the firing resistor (9) during a firing operation is transferred to the pyrotechnic material (2) in the firing chamber (1). To ensure that upon firing, the circuit elements in the firing apparatus remain undestroyed to the greatest possible extent, the semiconductor chip (6) is retained on a circuit board (5); the circuit board (5) is retained, with the side opposite the semiconductor chip (6), on a wall (4) of the firing chamber (1); and an opening (10, 11) is present in the wall (4) of the firing chamber (1) and in the circuit board (5), so that a passage exists between the firing resistor (9) mounted on the semiconductor chip (6) and the pyrotechnic material (2) in the firing chamber (1).
摘要:
The present invention relates to the field of very low-energy electropyrotechnic initiators. The initiator (1) according to the invention comprises, in particular: -an electrically and thermally insulating support (26) on which is deposited a thin-film electrical circuit comprising a resistive heating element (17) whose thickness is less than 1null10null6 m; -an ignition composition (23) consisting of a primary explosive, the particle size of which is less than 30null10null6 m. The initiators according to the invention are very suitable for initiating devices for protecting the occupants of a motor vehicle.
摘要:
An integrated circuit configuration, in particular for igniting a restraint device of a motor vehicle, has a capacitor and an ignition element. In this case, a porous region of a semiconductor layer forms a capacitor electrode, which is isolated from a further semiconductor layer by a dielectric layer. The further semiconductor layer being configured as a further capacitor electrode. The further semiconductor layer has a region that is tapered in its cross-section and serves as an ignition element electrically connected to the capacitor.
摘要:
An igniting/firing element includes a casing (1) receiving electrical junction lines connected to an igniting jumper (3) on a chip (2) provided with at least one igniting unit (4a, 4b). In order to allow for the element to be universally used and to avoid uncontrolled discharge, it is suggested that the junction lines be designed in the form of pins, which are led to the casing (1) through a glass seal, and that the casing bottom (1) be a metal body (7) in which bores (8) are provided for said glass seals (6) to pass through, and that the metal body be positive-fit to the plastic body (9) covering the peripheral wall of the casing (1) and wrapping the pin tops (5) emerging from the glass seal (6).
摘要:
A semiconductor bridge igniter device (10) having integral voltage anti-fuse protection provides an electric circuit including a firing leg and, optionally, a monitor leg. The firing leg comprises semiconductor pads (14a, 14b) separated and connected by a bridge (14c) and having metallized lands (16a, 16b) disposed over the pads (14a, 14b) so that an electrical potential applied across the metallized lands (16a, 16b) will cause sufficient current to flow through the firing leg of the electric circuit to release energy at the bridge (14c). A dielectric layer (15) is interposed within the firing leg and has a breakdown voltage equal to a selected threshold voltage (V.sub.th) and therefore provides protection against the device functioning at voltages below the threshold voltage (V.sub.th). A continuity monitor leg of the electric circuit is comprised of either a fusible link (34) or a resistor (36) disposed in parallel to the firing leg.