36 results about "Normal variation" patented technology

A computer implemented system for engine misfire detection employs a crankshaft-originated speed signal that includes normal variability due to target wheel tooth error and the like. A Discrete Fourier Transform (DFT) is performed on the speed signal to convert it into a frequency-domain raw misfire detection metric. The system is configured to normalize the raw misfire detection metric using a non-misfire metric that is obtained by and corresponds to non-misfire operation of an internal combustion engine. A resulting normalized misfire detection metric has such normal variations removed leaving variations attributable to misfire. The system detects a misfire when the normalized misfire detection metric exceeds a predetermined threshold and is bounded by a predetermined phase angle region. The system detects both continuous misfire as well as intermittent misfire. The system also detects single cylinder misfire and multiple cylinder misfire.

A computer implemented system for engine misfire detection employs a crankshaft-originated speed signal that includes normal variability due to target wheel tooth error and the like. A Discrete Fourier Transform (DFT) is performed on the speed signal to convert it into a frequency-domain raw misfire detection metric. The system is configured to normalize the raw misfire detection metric using a non-misfire metric that is obtained by and corresponds to non-misfire operation of an internal combustion engine. A resulting normalized misfire detection metric has such normal variations removed leaving variations attributable to misfire. The system detects a misfire when the normalized misfire detection metric exceeds a predetermined threshold and is bounded by a predetermined phase angle region. The system detects both continuous misfire as well as intermittent misfire. The system also detects single cylinder misfire and multiple cylinder misfire.

Ambulatory or in-hospital monitoring of patients is provided with early warning and prioritization, enabling proactive intervention and amelioration of both costs and risks of health care. Multivariate physiological parameters are estimated by empirical model to remove normal variation. Residuals are tested using a multivariate probability density function to provide a multivariate health index for prioritizing medical effort.

The invention relats to a face detector and a face detecting method. The face detector includes a detection processor for detecting a facial image from a frame of a motion picture according to template matching by use of a parameter, or a window size and window shift of a window. A parameter controller assigns the detection processor with a predetermined normal variation range of the parameter, to carry out face detection of a first frame of the motion picture according to the normal variation range, determines a limited variation range smaller than the normal variation range according to at least one of a value of the parameter used for the face detection of the first frame and the facial image of the first frame. The detection processor is assigned with the limited variation range, to carry out face detection of a succeeding frame after the first frame of the motion picture according to the limited variation range.

A method and apparatus for fault detection of series diodes in rectifiers is disclosed, wherein the voltages across one or both of the individual diodes, and / or the voltage across the pair of diodes are measured to determine a ratio between two of those voltages. The ratio is then analyzed to determine if a fault (e.g., a short circuit or an open circuit) is present. In some embodiments, circuitry can be included to compensate for the normal variations in diode characteristics (e.g., reverse leakage current, reverse recovery charge) between the pair of series diodes to minimize the potential for erroneous fault detection.

Refrigerant compositions are disclosed which includes (a) 57-59 total wt % pentafluoroethane (R125); (b) 38-41 total wt % 1,1,1,2-tetrafluoroethane (R134a); and (c) 2.5-2.9 total wt % isobutane. More preferably, the invention is a refrigerant formulation containing a nominal composition consisting of 58.0% R125, 39.3% R134a and 2.7% R600a, subject only to the normal variations in concentrations experienced with charging and mixing refrigerants.

A system for managing prescription data is provided. The system for managing prescription data includes a switch system. The switch system is configured to receive prescription submissions from pharmacy systems, submit the prescription submissions to approval systems, receive responses from the approval systems, and transmit the responses to the pharmacy systems. The switch system is further configured to receive treatment classification data including pathogen groups and pharmaceuticals prescribed to treat symptoms occurring from exposure to each pathogen group. The switch system is further configured to determine normal variations of the prescription submissions, detect anomalous variations of the prescription submissions, and generate a notification in response to detecting an anomalous variation.

A positioning apparatus for positioning based on satellite signals from positioning satellites includes: correlation information generating means for generating correlation information which indicates correlation values between the satellite signals and correlation purpose signals stored in the positioning apparatus; correlation information evaluating means for determining whether or not variation in the correlation values falls within a predetermined normal variation range; multipath determining means for determining whether or not the satellite signals are affected by a multipath based on determination results of the correlation information evaluating means; multipath correcting information generating means for generating multipath correcting information to correct effects of the multipath based on determination results of the multipath determining means and the correlation information; and correlation value correcting means for correcting the correlation values based on the multipath correcting information.

The invention discloses a terminal and a network state display method. The terminal includes a processing module for generating a network state area and at least two network identification areas according to the current network state information of the terminal, and the network state area is used for displaying states of different networks. The identification, the at least two network identification areas are respectively used to display the network identifications of at least two different networks; the display module is used to display the network status area and at least two network identification areas generated by the processing module on the interface of the terminal. Through the above technical solution, the present invention solves the problem that the existing terminal cannot display the network status, which is easy to cause misunderstanding to the user and has poor user experience. When the network changes, an independent signal display scheme is added to remind the user of the current state of the terminal, so that the user can better understand the normal change process of the network, and can more fully grasp the real-time usage of the terminal, providing User experience.

The invention discloses a switch position detection method and system. Through real-time monitoring of the switch, when the change of the movable contact of the switch is detected, the image information of the change of the movable contact is collected, and the collected image information is Send it to the monitoring station and send out an alarm signal at the same time. Through the real-time monitoring of the switch, this solution realizes that when the moving contact of the switch changes, the operator of the monitoring station is reminded in time, so that the operator can judge whether the change of the moving contact of the switch is correct or not based on the data of the power facilities displayed on the monitoring station. Normal changes, if abnormal changes, timely dispatch operators to overhaul.

The invention discloses a method for generating health guidance information, which mainly includes: acquiring physical state parameters and physical state parameter change factors of group users within a period of time; judging whether the physical state parameters of any individual user in the group users are in a normal If the physical state parameters of an individual user exceed the normal fluctuation range, search for the same or similar physical state parameter out-of-tolerance situation as the individual user from the user information database, but the final physical state parameter returns to the normal fluctuation range The physical state parameter change factors of one or more users are pushed to the individual user; after the subsequent integration, the health guidance information is directly pushed to other individual users with this physical state parameter out of tolerance. The invention also discloses a generating device for health guidance information. The beneficial effect is: realizing personalized and highly effective health guidance.

The invention discloses a method and device for judging an elevator leveling failure. The method includes: taking the leveling signal and the target floor signal of the elevator, and judging whether the elevator is at the target floor according to the target floor signal; From the floor to the target floor, the normal change sequence of the leveling sensor signal; obtain the real-time change sequence of the leveling sensor signal from the starting floor to the target floor; compare whether the normal change sequence is the same as the real-time change sequence; if they are the same, judge that the elevator is normal Leveling, if not the same, it is judged that there is a leveling fault in the elevator. When the elevator is running or passing a faulty floor, its leveling sensor signal will have corresponding abnormal changes. By analyzing the real-time change sequence of the elevator leveling sensor signal, fault judgment and fault prediction can be carried out. In order to experience faults, the elevator maintenance personnel can maintain the elevator in time and reduce the probability of elevator accidents.