73results about How to "Solve exact calculations" patented technology

A touch sensor panel comprises a plurality of sensing electrodes arranged on one surface of a substrate and a conductive wire connected to one side of each of the plurality of sensing electrodes. Each sensing electrode includes at least one convex portion protruded in the opposite direction of the one side, and at least one concave portion indented towards the one side. For arrangement, the convex portion of each of the said sensing electrodes is inserted into the concave portion of at least one adjacent sensing electrode.

An RSSI positioning method based on frequency-hopping spread spectrum technology, comprising: calibration stage: measuring the RSSI values of a plurality of channels at fixed points, and recording and calculating the ranging parameters in an RSSI ranging model; system preparation: deploying a positioning anchor node, and realizing synchronization between a target node and the anchor node; conducting communication on the target node by respectively utilizing a plurality of channels to obtain the RSSI values; signal processing stage: processing the RSSI into signal strength amplitude and performing optimization; and positioning stage: calculating a distance and the target node position on a positioning server according to each of the signal strength. The present invention solves the problem that low RSSI positioning precision cannot satisfy the actual requirements because a traditional RSSI positioning method is limited to factors such as multipath signal transmission, co-channel interference, obstacle interference and low coordinate calculation precision of a trilateration method.

Embodiments of the invention comprise an angled axis machine vision system having a camera system angled with respect to an axis of the coordinate system of the environment. This configuration has all of the advantages of the horizontal alignment while eliminating the inherent problem of utilizing horizontal and vertical lines in an environment for distance calculations when the horizontal and vertical lines are parallel or close to parallel to an axis lying between camera centers of the camera system. With the camera centers angled about the roll axis, horizontal and vertical lines in the environment appear as angled lines in images taken from the cameras enabling more accurate distance calculations. With the camera centers angled downward about the pitch axis objects that are near are more readily observed. With angled axis rotation it is still possible for lines in the environment to be parallel to the axis defined between the camera centers, but these instances are rarer than horizontal or vertical lines in real world environments. Embodiments of the invention may comprise a camera mount that is rotatably mounted to a support wherein two sets of pictures from each of the cameras may either be utilized. In one embodiment the two sets are compared for the number of lines which are parallel to the axis of the camera centers and the set of pictures with the least lines parallel is used for distance calculations. In another embodiment, the two sets are utilized to correlate the distances derived from each set of pictures.

A display device is provided and includes a first photosensor that detects the light amount of ambient light of a display area, a second photosensor that detects dark current arising when light is blocked, and changeover switches that select the first photosensor and the second photosensor. The display device further includes a comparator that compares the output of the selected first photosensor or second photosensor with a predetermined reference value, and control means that calculates the difference between the comparison result by the comparator with the first photosensor and the comparison result by the comparator with the second photosensor and controls the amount of light supplied to the display area corresponding to the calculation result. This configuration suppresses the influence of a detection error due to variation in the performance between the photosensors applied to the display device to thereby accurately adjust the amount of light supplied to the display area.

An air conditioner includes a refrigerant circuit, a refrigerant quantity calculating section, and a refrigerant quantity judging section. The refrigerant circuit includes a compressor, an outdoor heat exchanger, an indoor expansion valve, and an indoor heat exchanger interconnected together. The refrigerant quantity calculating section calculates the refrigerant quantity in the refrigerant circuit taking into account a dissolved refrigerant quantity that is the quantity of refrigerant dissolved in the refrigerating machine oil in the compressor, based on an operation state quantity of constituent equipment or refrigerant flowing in the refrigerant circuit. The refrigerant quantity judging section judges the adequacy of the refrigerant quantity in the refrigerant circuit based on the refrigerant quantity calculated by the refrigerant quantity calculating section. In addition, the refrigerant quantity calculating section calculates the dissolved refrigerant quantity based on operation state quantities that include at least the ambient temperature outside the compressor.

In a receiving apparatus (100), a noise power estimation unit (107) estimates the noise power included in a received signal in the frequency domain. A channel characteristics calculation unit (105) estimates the channel characteristics in accordance with a reference signal included in the received signal. A tap coefficient calculation unit (108) calculates the tap coefficients for a filtering unit (109) in accordance with noise power included in the received signal and with an autocorrelation value for the channel characteristics. The filtering unit (109) calculates an estimated value for the channel characteristics via filtering processing on the channel characteristics in accordance with the tap coefficients.

Disclosed herein is a Fourier transform-based phasor estimation method and apparatus capable of eliminating the S influence of exponentially decaying DC offsets. According to a Fourier transform-based phasor estimation method according to an embodiment of the present invention, an input signal is sampled, and samples of one-cycle data of the input signal are separated into at least two sample groups. A Discrete Fourier Transform (DFT) is performed on each of the sample groups. A DC offset included in the input signal is calculated on a basis of results of the DFT on each of the sample groups, and an error caused by the DC offset is calculated using the calculated DC offset. A phasor of a fundamental frequency component included in the input signal is estimated by eliminating the calculated error, caused by the DC offset, from the results of the DFT on the input signal.

A system and method for calculating available energy of a battery is provided and the system includes a controller configured to receive State-Of-Charge (SOC) of the battery as an input and output an Open-Circuit Voltage (OCV) of the battery. In addition, a value of available energy is stored in a memory and the controller obtains a value of charged and discharged energy and a value of heat loss energy from an OCV of the battery, an output voltage of a battery system, and an output current of the battery system. The value of the obtained charged and discharged energy are added to the value of the available energy which has been previously stored and the value of the heat loss energy is subtracted to calculate a value of new available energy.

The present invention improves a lead-in time of the PLL with a phase error detector having an enlarged range of phase error detection and gain control based on the PLL synchronous state. The phase error detection range is enlarged by correcting the phase error detection point in a case where the phase error increases. A locked state of the PLL is determined based on a standard deviation of the smoothed phase error values and the gains are switched between a lead-in transient state and a stationary state. As a result, it is possible to shorten and stabilize the lead-in time of the PLL.

The invention relates to the field of producing the liquid subsoil assets, and could be used in the bottom-hole pumping of oil wells.

The method consists in creating a long wave impact onto the formation in the infra-low frequency range during cruse oil production. The method provides for a running validity check and analysis of change trend, as well as an operative control of the impact parameters in order for supporting the positive trends in the fluid production conditions and preventing the negative trends.

The apparatus for implementing the method consists of a switch, measure unit, control unit, and information monitoring unit, which is connected through a first and second modems and communication channel to the apparatus control unit, and a set of measurement devices of the productive complex. The switch, measure unit, control unit, and the first modem are arranged in close proximity to the well and ensure a local computerized control of the fluid production process and the impact. The information monitoring unit and the second modem could be arranged at removed data processing and analyzing centers, i.e., dispatching points, automated workstation of technologist, etc.

The apparatus ensures simultaneously the implementation of the cyclic mode of the production and wave impact onto the formation, as well as the measurement of the parameters of the fluid and productive complex.

A cable label having a desired configuration is provided without forcing a user to do any troublesome work. A character string to be printed on a cable label is memorized in a character string memory section. A print image generating section generates a character string memorized in the character string memory section. A designation and its outside diameter value, for example, of each of plural cables are memorized in a cable information memory section. A label length determining section determines the length of a cable label based on the outside diameter value of a selected cable. A print image arranging section arranges a print image generated by the print image generating section within a length determined by a label length determining section.

In a data converting circuit, an approximation calculation circuit calculates an approximation value of an output to input data by using an n-th order equation (n is an integer equal to or more than one). An error reducing circuit generates an error correction value by using a multiplication factor determined based on the input data. An addition section adds the approximation value and the error correction value and outputs an addition result.

Provided is a method and system for detection of anomalous work pieces that includes computing at least one deviation data signal for a target data signal of a target work piece with respect to reference data signals recorded for a corresponding production process step of a set of reference work pieces, performing a stepwise anomaly detection by data processing of the at least one computed deviation data signal and a process type indicator indicating a type of the production process step using a trained anomaly detection data model to calculate for each time step or path length step of the production process step an anomaly probability that the respective time step or path length step is anomalous, and classifying the target work piece and/or the production process step as being anomalous or not anomalous on the basis of the calculated anomaly probabilities.

A method and a device for extracting local features of a 3D point cloud are disclosed. Angle information and the concavo-convex information about a feature point to be extracted and a point of an adjacent body element are calculated based on a local reference system corresponding to the points of each body element. The feature relation between the two points can be calculated accurately. The property of invariance in translation and rotation is possessed. Since concavo-convex information about a local point cloud is contained during extraction, the inaccurate extraction caused by ignoring concavo-convex ambiguity in previous 3D local feature description is resolved. During normalization processing, exponential normalization processing and second-normal-form normalization are adopted, which solves the problem of inaccurate similarity calculation caused by a circumstance that a few elements in a vector are too large or too small during feature extraction, thus improving accuracy of extracted three-dimensional local features.

The invention concerns a device for locally measuring strains withth a measurement volume (2) that comprises a test body (5) formed from a homogeneous material of known mechanical properties and ellipsoidal in shape intended to he included in the measurement volume (2), at least one measurement optical fibre (7) for measuring deformation embedded within said test body (5) and means (8) for linking the at least one measurement optical fibre (7) to a system (9, 10, 11) designed to stimulate the at least one measurement optical fibre (7), detect signals coming from the fibres and, by means of an electronic system (11) capable of carrying out calculations, determine strains from at least one of the detected signals and known mechanical properties.