57results about How to "Ensure measurement" patented technology

The invention provides a system for measuring stroke volume (SV), cardiac output (CO), and cardiac power (CP) from a patient that features: 1) an impedance sensor connected to at least two body-worn electrodes and including an impedance circuit that processes analog signals from the electrodes to measure an impedance signal (e.g. a TBEV waveform); 2) an ECG sensor connected to at least two chest-worn electrodes and including an ECG circuit that processes analog signals from the electrodes to measure and ECG signal; 3) an optical sensor connected to a body-worn optical probe and including an optical circuit that processes signals from the probe to measure at least one optical signal (e.g. a PPG waveform) from the patient; 4) a processing system, typically worn on the patient's wrist and connected through a wired interface to the optical sensor, and through either a wired or wireless interface to the TBEV and ECG sensors. The processing system analyzes the ECG, TBEV and optical signals to determine SV, and further analyzes SV and HR determined from an ECG sensor to determine CO.

Embodiments of the present invention are directed to developing and administering subject-appropriate ITAs. Various embodiments of the present invention evaluate many aspects of ITA content, content presentation, and administration with regard to particular categories of test subjects in order to develop subject-appropriate ITAs (“SAITAs”) and to administer SAITAs appropriately to the categories of test subjects for which the tests are developed. Aspects of SAITA presentation and administration that are evaluated include input devices, presentation formats, presentation language, presentation media, colors used in presentation of tutorials and stimuli, words, pictures, and symbols used in a presentation of tutorials and stimuli, the pace and length of various portions of SAITAs, human vs. computer administration of SAITAs, presentation of feedback to test subjects during SAITAs, ITAs and many other aspects of ITA content, content presentation, and administration. Embodiments of the present invention employ systematic methods for both development and administration of SAITAs.

A general pressure sensor for an automobile comprising a sensor shell, a silicon piezoresistive sensitive core, a sensor core seat, a signal conditioning circuit, and an automobile electric device interface is disclosed. The silicon piezoresistive sensitive core, the sensor core seat and the signal conditioning circuit are disposed in the inner cavity of the sensor housing. The sensor housing is installed to the automobile electric device interface, and the silicon piezoresistive sensitive core comprises a silicon piezoresistive sensitive element and a glass ring sheet. The silicon piezoresistive sensitive element is welded and fixed to a surface of the glass ring sheet. An insulation oxidation layer is formed on one surface of the glass ring sheet and the silicon piezoresistive sensitive element. The other surface of the glass ring sheet is hermetically fixed to the ring-shape recession surface provided on the sensor core seat. The sensor core seat is hermetically and rotationally fixed to a pressure inlet on the sensor housing, after the inner lead wire on the silicon piezoresistive sensitive core is led to an interposing board provided on one end of the central hole through the other end of the central hole on the ring-shape recession surface of the sensor core seat, and then is led out by the automobile electric device interface via the signal conditioning circuit.

An atomic clock at optical frequency based on atomic beam and a method for generating the atomic clock comprises: The atomic beam (8) is ejected from a pile mouth after heating an atomic pile (1) in a vacuum chamber (2); A laser (4) corresponding to frequency of a clock transition transfers the atomic beam (8) from a ground state of the clock transition to an excited state of the clock transition in a adiabatic passing mode; After interaction with the laser corresponding to the frequency of a clock transition, the atomic beam (8) passes a signal detection region with a detection laser (5), and after the interaction with the detection laser (5), each of the atoms gives off a photon of spontaneous emission; An emitted fluorescence photon signal from atoms which is excited by the detection laser (5) is explored; A clock laser (4) for exploring transition frequency of an atomic clock is modulated. The signal which is detected performs frequency locking for the frequency of the clock laser which is locked on the clock transition spectrum of the atoms so as to implement the atomic clock.

An angle sensor comprising a housing (1) having horizontal and vertical axes, which housing is adapted to receive a magnetic core (5) such that the core remains in substantially the same plane, e.g. by floating on a liquid (4). The core is provided with two orthogonal windings (8,18). In use, an electric field is applied across the vertical axis of the housing, which electric field induces a voltage in the windings, wherein the magnitude of the induced field is dependent on the angle of the magnetic core to the horizontal winding.