Abstract: A dynamometer system includes a prime mover dynamometer and a gearbox. The prime mover dynamometer includes a primary output configured to be coupled to a drivetrain that represents a portion of a vehicle powertrain, a secondary output having a fixed speed relationship with the primary output, and a controller. The gearbox is coupled to the secondary output and configured to be coupled to an electric motor. The controller alters a speed and torque of the outputs based on a calculated speed and torque associated with a simulated internal combustion engine that represents another portion of the vehicle powertrain to impart speed oscillations into the electric motor and to impart torque oscillations into the drivetrain.

Abstract: A gyroscope includes at least one anchor and a plurality of gyroscope spring elements coupled to the at least one anchor. The gyroscope also includes a plurality of concentric rings coupled to the plurality of gyroscope spring elements and configured to encircle the plurality of gyroscope spring elements. The gyroscope further includes an excitation/detection/tuning unit electrostatically coupled to the plurality of concentric rings.

Abstract: A chemical impairment detection system adaptable for use in a vehicle. The impairment detection system includes an intake adapted to receive an air sample from a source and an alcohol sensor for detecting an alcohol level in the air sample. An integrated breath chamber channels the air sample from the intake to the alcohol sensor. Source evaluator means in the breath chamber measure one or more characteristics of the received air sample for validating the sample. The source evaluator means measures the air sample characteristics as the air sample flows through the breath chamber.

Abstract: An inertia measurement module and three-axis accelerometer, comprising a first pole piece (4) located on a substrate and a mass block (1) suspendingly connected above the substrate via elastic beams (11, 12); the elastic beams (11, 12) includes a first elastic beam (12) and a second elastic beam (11), two ends of the second elastic beams (11) being connected to an anchor point (6) of the substrate, two ends of the first elastic beam (11) being connected to the mass block (1); a center of the first elastic beam (12) and/or the second elastic beam (11) deviates from a center of gravity of the mass block (1); the mass block (1) is further provided with a first movable electrode (9) and a second movable electrode (10) in a Y-axis and an X-axis direction; the movement of one axis in a plane of the inertia measurement module cannot be affected by an eccentric structure feature, such that both X-axis movement and Y-axis movement are linear movements, thus not intensifying an inter-axis coupling, and also not reducin

Abstract: An metallographic system comprising a programmable controller, a robotic arm, a specimen clamping or holding device, a sectioning saw, a mounting station, a polishing station, a specimen preparation station, and an analyzer for examining the specimen.

Abstract: The present invention provides a sensor with a simple structure which can precisely sense movement, etc., the sensor comprising: a head; and a support which is disposed to support one side of the head, wherein the support comprises: a first support portion for supporting the head; a second support portion which supports the head and is spaced apart from the first support portion; a first extension portion which is extended from the first support portion; a second extension portion which is extended from the second support portion; and a sensing portion which senses the deformation of the first extension portion and the second extension portion.

Abstract: A micromechanical detection structure includes a substrate of semiconductor material and a driving-mass arrangement is coupled to a set of driving electrodes and driven in a driving movement following upon biasing of the set of driving electrodes. A first anchorage unit is coupled to the driving-mass arrangement for elastically coupling the driving-mass arrangement to the substrate at first anchorages. A driven-mass arrangement is elastically coupled to the driving-mass arrangement by a coupling unit and designed to be driven by the driving movement. A second anchorage unit is coupled to the driven-mass arrangement for elastically coupling the driven-mass arrangement to the substrate at second anchorages. Following upon the driving movement, the resultant of the forces and of the torques exerted on the substrate at the first and second anchorages is substantially zero.

Abstract: An acoustic wave detector may include: an exterior housing with an exterior housing wall, a gas chamber located within the exterior housing and configured to receive a gas therein. The exterior housing wall may include an aperture providing a gas passage between the gas chamber and the exterior of the acoustic wave detector. The acoustic wave detector may further include an excitation element configured to selectively excite gas molecules of a specific type in the gas received in the gas chamber in a time-varying fashion, thereby generating acoustic waves in the gas, and an acoustic wave sensor configured to detect the acoustic waves generated in the gas and acoustic waves generated outside of the acoustic wave detector. The acoustic wave sensor may have an acoustic port overlapping with the aperture in the exterior housing wall.

Abstract: A sensor for detecting a physical variable, including: —a sensor element for outputting an electrical signal dependent on the physical variable, —a substrate carrying the sensor element, —a printed circuit board, conducting the electrical signal, on the substrate, and —an embedding compound, in which the sensor element is completely embedded and the printed circuit board is at least partly embedded, —wherein at least one compensation element is embodied in the embedding compound, by which compensation element a mechanical stress caused by an element of the sensor at least partly embedded in the embedding compound is counteracted.

Abstract: A liquid carbon dioxide delivery pump with a pump head including a pump chamber and a refrigerant channel different from a channel passing through the pump chamber, a circulation channel for refrigerant, a refrigerant pump arranged on the circulation channel, the refrigerant pump for causing the refrigerant to circulate through the circulation channel, and a cooling section arranged on the circulation channel, at a position away from the pump head, the cooling section being configured to cool the refrigerant passing through the circulation channel. The liquid carbon dioxide delivery pump further has a temperature sensor for detecting an ambient temperature of the pump head or a temperature of the pump head, and a refrigerant pump control section for adjusting, based on a detection signal of the temperature sensor, a flow rate of the refrigerant pump such that liquid carbon dioxide flowing through the pump head at a specific temperature.

Abstract: A MEMS gyroscope, wherein a suspended mass is mobile with respect to a supporting structure. The mobile mass is affected by quadrature error caused by a quadrature moment; a driving structure is coupled to the suspended mass for controlling the movement of the mobile mass in a driving direction at a driving frequency. Motion-sensing electrodes, coupled to the mobile mass, detect the movement of the mobile mass in the sensing direction and quadrature-compensation electrodes are coupled to the mobile mass to generate a compensation moment opposite to the quadrature moment. The gyroscope is configured to bias the quadrature-compensation electrodes with a compensation voltage so that the difference between the resonance frequency of the mobile mass and the driving frequency has a preset frequency-mismatch value.

Abstract: Systems and methods are provided for calibrating and regulating the temperature of a sensor. One or more temperature adjusting devices can be provided to regulate the temperature of the sensor. One or more of the temperature adjusting devices can be provided to perform a calibration to determine a relationship between sensor bias and sensor temperature. The one or more temperature adjusting devices can be built into the sensor.

Abstract: A microelectromechanical device that comprises a first structural layer, and a movable mass suspended to a primary out-of plane motion relative the first structural layer. A cantilever motion limiter structure is etched into the movable mass, and a first stopper element is arranged on the first structural layer, opposite to the cantilever motion limiter structure. Improved mechanical robustness is achieved with optimal use of element space.

Abstract: A robust microelectromechanical structure that is less prone to internal or external electrical disturbances. The structure includes a mobile element with a rotor suspended to a support, a first frame anchored to the support and circumscribing the mobile element, and a second frame anchored to the support and circumscribing the mobile element between the mobile element and the first frame, electrically isolated from the first frame. The rotor and the second frame are galvanically coupled to have a same electric potential.

Abstract: A two-piece traffic marker assembly a marker body includes a marker body formed of a low density polyethylene and a separable molded rubber base. The base has a weight comprising at least 70% of a total weight of the traffic marker assembly, with the marker body having a weight comprising the remaining 30% or less of the total weight of the traffic marker assembly. Because of this advantageous weight distribution, relative to prior art traffic cones, when the traffic marker assembly is assembled, a tip angle of the traffic marker assembly is about 76 degrees from vertical. A plurality of circumferentially spaced interlocking protrusions disposed on the wall of the marker body, for engaging an interior circumference of the base when the marker assembly is in an assembled space, and for also preventing sticking of marker bodies together when they are stacked.

Abstract: A gyroscope includes a cylindrical shell having a first end and a second end, a pedestal, a plurality of spokes coupled from the pedestal to the second end of the cylindrical shell, and a plurality of tuning tabs extending from one or more of the plurality of spokes.

Abstract: A gas sensor comprises a metal oxide sensing patch, a heater for heating the sensing patch, electrodes for measuring the conductivity of the sensing patch and an evaluation unit for generating a resulting parameter indicative of at least one analyte. Further, a temperature sensor is provided for measuring the temperature at the location of the sensing patch. The evaluation unit is adapted to derive a first parameter indicative of the conductivity of the sensing patch and a second parameter indicative of the heating power required to maintain a desired temperature of the sensing patch or indicative of the deviation of the temperature at the sensing patch from the desired temperature. The evaluation unit further combines the first and second parameters for evaluating the resulting parameter, thereby using the sensing patch not only as a chemiresistor but also as a pellistor-type measurement device.

Abstract: A back pressure valve configured to switch between a pressurized state and a released state open to an atmosphere is used as a back pressure valve in a supercritical fluid chromatograph. Switching from a state of supercritical fluid chromatography analysis to liquid chromatography is performed by stopping a pump that supplies a supercritical fluid, continuously operating a pump that supplies a solvent used as a modifier, and bringing the back pressure valve into the released state.

Abstract: A physical quantity sensor includes a first sensor element, an outer edge portion arranged on at least a portion of the outer periphery of the first sensor element, in which a first groove portion extending in a first direction is provided on the outer edge portion when the outer edge portion is seen in plan view.

Abstract: A nozzle cap assembly includes a nozzle cap configured to mount on a fire hydrant, the nozzle cap housing defining an inner surface and an outer surface, the inner surface defining a nozzle cap cavity within the nozzle cap; an antenna enclosure mounted to the nozzle cap, a portion of the antenna enclosure disposed external to the nozzle cap; and an antenna positioned within the antenna enclosure.