Abstract:
A battery charger having a charging side at the body thereof for receiving and charging a mobile robotic vacuum cleaner is disclosed. The charging side has a groove, a sound wave transmitter mounted in the groove and a baffle mounted in the groove in front side of the sound wave transmitter for reflecting the sound wave transmitted by the ultrasonic transmitter toward two opposite lateral sides of the charging side along the groove to form two opposing sound wave beams to form two opposing sound wave beams for receiving by a sound wave receiver of the mobile robotic vacuum cleaner for determination of the steering direction. Subject to the guide of the sound wave beams, the mobile robotic vacuum cleaner is accurately guided to the battery charger and will not pass over or impact the battery charger.
Abstract:
Used in a mobile robotic vacuum cleaner, a dust collector is disclosed to include a dust collection box, and a chips collection box connected to the dust collection box. The chips collection box comprises two openings respectively disposed adjacent to one respective roller brush of the mobile robotic vacuum cleaner and adapted for receiving chips directed by the roller brush for enabling the directed chips to be gathered in the chips collection box. Thus, dust sucked by the mobile robotic vacuum cleaner and chips directed by the roller brushes are respectively collected in the dust collection box and the chips collection box, and any non-dust articles that are accidentally directed into the chips collection box can be discovered and cleaned easily by the user.
Abstract:
A method, system and computer program product is disclosed for using a constrained pressure residual (CPR) preconditioner to solve adjoint models. A linear system of fluid flow equations comprising a plurality of variables that represent fluid flow properties in a geological formation of a subterranean reservoir is provided. Matrix (Ã)T, which comprises a transpose of a Jacobian matrix associated with the linear system of fluid flow equations, is constructed. A constrained pressure residual preconditioner MCPRA−1 is constructed responsive to the matrix (Ã)T. Matrix equation (Ã)Ty=d is then solved using the constrained pressure residual preconditioner MCPRA−1.
Abstract:
A system having a base station having a Wi-Fi communication module, a first Wi-Fi transportation application that controls the Wi-Fi communication module; and a mobile device having a Point of Sale (POS) module configured to perform Point of Sale operations, a Wi-Fi Communication module, a second Wi-Fi transportation authority that controls the POS module, and the Wi-Fi communications module; wherein the first Wi-Fi transportation application prevents the base station from communicating with the mobile device unless the second Wi-Fi transportation application has been authenticated by the first Wi-Fi transportation application; and wherein the second Wi-Fi transportation application prevents the mobile device from communicating with base station unless the first Wi-Fi transportation application has been authenticated by the second Wi-Fi transportation application.
Abstract:
A system having a base station having a first Wi-Fi transportation, and a mobile device having a second Wi-Fi transportation Application, a peripheral device configured to communicate with the base station and the mobile device, the peripheral device having a third Wi-Fi transportation application, wherein the first Wi-Fi transportation application prevents the base station from communicating with the peripheral device and the second Wi-Fi transportation application prevents the mobile device from communicating with the peripheral device unless the third Wi-Fi transportation application has been authenticated by the first and second Wi-Fi transportation applications, and wherein the third Wi-Fi transportation application prevents the peripheral device from communicating with the base station and the mobile device unless the first and second Wi-Fi transportation applications have been authenticated by the third Wi-Fi transportation application.
Abstract:
A method, system and computer program product is disclosed for using a constrained pressure residual (CPR) preconditioner to solve adjoint models. A linear system of fluid flow equations comprising a plurality of variables that represent fluid flow properties in a geological formation of a subterranean reservoir is provided. Matrix (Ã)T, which comprises a transpose of a Jacobian matrix associated with the linear system of fluid flow equations, is constructed. A constrained pressure residual preconditioner MCPRA−1 is constructed responsive to the matrix (Ã)T. Matrix equation (Ã)Ty=d is then solved using the constrained pressure residual preconditioner MCPRA−1.
Abstract:
A MEMS device and method of fabrication including a plurality of structural tie bars for added structural integrity. The MEMS device includes an active layer and a substrate having an insulating material formed therebetween, first and second pluralities of stationary electrodes and a plurality of moveable electrodes in the active layer. A plurality of interconnects are electrically coupled to a second surface of each of the first and second pluralities of stationary electrodes. A plurality of anchors fixedly attach a first surface of each of the first and second pluralities of stationary electrodes to the substrate. A first structural tie bar couples a second surface of each of the first plurality of stationary electrodes and a second structural tie bar couples a second surface of each of the second plurality of stationary electrodes.
Abstract:
A proof mass (11) for a MEMS device is provided herein. The proof mass comprises a base (13) comprising a semiconductor material, and at least one appendage (15) adjoined to said base by way of a stem (21). The appendage (15) comprises a metal (17) or other such material that may be disposed on a semiconductor material (19). The metal increases the total mass of the proof mass (11) as compared to a proof mass of similar dimensions made solely from semiconductor materials, without increasing the size of the proof mass. At the same time, the attachment of the appendage (15) by way of a stem (21) prevents stresses arising from CTE differentials in the appendage from being transmitted to the base, where they could contribute to temperature errors.
Abstract:
A lead frame (201) for a packaged electronic device having split flag structures (205, 207) coupled by support structures (219). The support structures include bend portions (233) for providing stress relief between the flag structures during the manufacture and/or during the operation of a packaged electronic device (301). In one embodiment, the packaged electronic device includes an inertial sensor (515).