Abstract:
A mass flow meter employs discrete chip-type temperature sensors to sense a fluid flow rate. The sensor can be a semiconductor chip such as SiC or silicon, or thin film tungsten on an AlN substrate. The sensors can be distributed symmetrically with respect to the conduit through which the fluid flows, and can be connected in a four-sensor bridge circuit for accurate flow rate monitoring. An output from the mass flow meter can be used to control the fluid flow.
Abstract:
A thermal attach and detach method and system for surface-mounted components (SMCs) employs a planar-heater which generates heat in response to an electrical current. The heater's resistance varies with its temperature, and the resistance is read to determine heater and SMC temperature. A means of gripping an SMC is provided such that the device's I/O contacts are heated by thermal conduction from the planar-heater through and/or along the SMC's side-walls. An electrical current is provided to the planar-heater such that heat sufficient to attach/detach the I/O contacts to or from a PCB is generated. The method enables the gripping, heating, resistance monitoring and SMC temperature measuring to occur simultaneously. Several means of gripping an SMC are described, including vacuum, mechanical, adhesive and magnetic. A method which employs a heating element to heat a substrate on which SMCs may be mounted is also described.
Abstract:
A helmet-mounted wireless frequency-modulated infrared beam-actuated auxiliary brakelight system capable of reliable operation in all ranges of ambient light while permitting the rider to turn his head from side to side over a large angle approaching 180 degrees or more. The system comprises a frequency-modulated infrared transmitter, in operative combination with a switch for detecting brake system actuation, and a helmet module, including a frequency-modulated infrared receiver and decoder in operative combination with a stop light. Brake system initiation results in switch actuation which causes the transmitter to emit a beam of frequency-modulated infrared energy towards the helmet module. When the beam is received at the helmet module, it is captured using a lens in operative combination with a novel lightpipe which ensures reception over a 180 degree angle. The infrared energy is then transmitted through a solar filter which further discriminates between solar infrared energy and the infrared beam from the transmitter, before being received at an electro-optical circuit. This circuit decodes the frequency-modulated infrared energy and activates the auxiliary brake lamp.
Abstract:
Methods and devices for moving a droplet on an elongated track on a textured surface using vibration. The elongated track on the textured surface includes a plurality of transverse arcuate projections such that a droplet on the surface is in the Fakir state and when the surface is vibrated the droplet is urged along the track as a result of an imbalance in the adhesion of a front portion of the droplet and a back portion of the droplet to the textured surface.
Abstract:
A sensor system has an AlN substrate, a W layer on the substrate, a signal source adapted to apply an electrical actuating signal to the W layer, and a sensor adapted to sense the response of the W layer. The W layer can comprise a thin film, with various types of optional protective layers over the film. Applications include sensing temperature, fluid flow rates, fluid levels, pressure and chemical environments. For a planar heater, the W layer comprises a plurality of conductive strands distributed on the substrate, with the strands generally parallel and serpentine shaped for a rectangular substrate, and extending along respective lines of longitude that merge at opposite poles of the substrate for a circular substrate.
Abstract:
A sensor system has an AlN substrate, a W layer on the substrate, a signal source adapted to apply an electrical actuating signal to the W layer, and a sensor adapted to sense the response of the W layer. The W layer can comprise a thin film, with various types of optional protective layers over the film. Applications include sensing temperature, fluid flow rates, fluid levels, pressure and chemical environments. For a planar heater, the W layer comprises a plurality of conductive strands distributed on the substrate, with the strands generally parallel and serpentine shaped for a rectangular substrate, and extending along respective lines of longitude that merge at opposite poles of the substrate for a circular substrate.
Abstract:
Environmental sensors and other bodies, together with associated lead wires, are mounted to a oxidizable substrate for high temperature applications by means of a reacted borosilicate mixture (RBM) that secures the body relative to the substrate via of an oxide interface formed between the RBM and substrate during a high temperature reaction process. An oxide interface is also formed with oxidizable bodies to provide further mounting strength. The RBM is a B2O3—SiO2 mixture, with the B2O3 portion a function of the reaction temperature and desired bonding strength and viscosity.
Abstract translation:环境传感器和其他物体以及相关联的引线通过反应的硼硅酸盐混合物(RBM)安装到可氧化的基底上,用于高温应用,反应的硼硅酸盐混合物(RBM)通过形成在RBM和 底物在高温反应过程中。 氧化物界面也形成有可氧化体以提供进一步的安装强度。 RBM是B 2 O 3 -SiO 2 N 2混合物,其中B 2 O 3 SUB>部分是反应温度和所需粘合强度和粘度的函数。
Abstract:
A device for implantation into a prostate-cavity of a patient having undergone a prostatectomy procedure is disclosed herein. The device includes a bag-body having an outer-shell and an inner-volume. In a preferred embodiment, the inner-volume is filled with a saline material. The device effectively fills the void after a prostatectomy procedure, helping patients quickly recover from the current side effects of surgery and preventing incontinence without having to endure intense therapy or invasive surgery.
Abstract:
The invention features an apparatus including a first portion defining an optical axis and configured to connect to an optical fiber, a second portion having a reference surface configured to connect with a terminal, and a third portion between the first and second portions. The third portion bends more easily than either the first or second portion to permit adjustable alignment of the optical axis relative to the reference surface.