39results about How to "Simple arithmetic processing" patented technology

In a radio controlled clock and a decoding method of a time code signal, the time code signal can be accurately decoded irrespective of the mixture of noises and the deterioration of a radio wave signal receiving situation, and arithmetic processing is simple. A standard time signal is received and the time code signal superposed on this standard time signal is sampled at an interval of 50 ms and is stored to a memory. The stored sampling data are formed as a list in a data group every one second (20 samples). The plurality of data groups formed as a list are added every each sampling point, and a point for maximizing an increase change of the adding result is set to a synchronizing point of the sampling. Further, the correlation of the sampling data group and a code template pattern is calculated and a code shown by the sampling data group is judged.

While a biped walking mobile body is in a motion, including level-ground walking, the position of the center of gravity (G0) of the biped walking mobile body, the position of an ankle joint (12) of each leg (2), and the position of a metatarsophalangeal joint (13a) of a foot (13) are successively grasped, and the horizontal position of a floor reaction force acting point of the leg (2) in contact with the ground is estimated on the basis of the relative positional relationship among the aforesaid positions. Depending on whether the center of gravity (G0) is behind the ankle joint (12), between the ankle joint (12) and the metatarsophalangeal joint (13a), or before the metatarsophalangeal joint (13a) with respect to the advancing direction of the biped walking mobile body, the horizontal position of the ankle joint (12), the center of gravity (G0), or the metatarsophalangeal joint (13a) is defined as the horizontal position of a floor reaction force acting point. The vertical position of the floor reaction force acting point is estimated on the basis of the vertical distance from the ankle joint (12) to a ground contact surface.

There is provided a electric power steering device which can perform torque control through a simple arithmetic process using a synchronous reluctance motor having a nonlinear current/torque characteristic. A target torque is transmitted from an EPS control unit 41 to a motor control unit 51. The motor control unit 51 calculates a target-current effective value I and a target-current phase θ from the input target torque. Based on the calculated target-current effective value I and target-current phase θ, calculation is changed whether to perform calculation so that the maximum torque (the maximum torque obtainable at the minimum current effective value) can be obtained, or to perform calculation so that the maximum output (the maximum output obtainable at the minimum current effective value) can be obtained in accordance with a duty ratio of an output by a PWM converting unit 57 comprising a three-phase inverter. Next, a three-phase biaxial converting unit 53 calculates a target q-axis current Iq and a target d-axis current Id from the target-current effective value I and the target-current phase θ, and the PWM converting unit 57 performs duty control in order to control the torque of a motor 58.

The invention relates to a real-time control method for an artificial limb based on single-point acquiring muscle signals. The method comprises the following steps: acquiring the muscle signals through a sound sensor; acquiring a forearm grabbing sound signal generated by carrying out grabbing actions with hands through a data acquisition card; wiping off the noise of the forearm grabbing sound signal; converting the sound signal into a digital signal; dividing the acquired digital signal into short timeframes; carrying out variance calculation on each frame signal; if the variance of each frame signal excesses a first threshold, intercepting the subsequent data segment to be used as an actuating signal segment; if the variances of the three continuous frames excess a second threshold, intercepting the subsequent data segment to be used as an actuating signal segment; extracting the time domain features of actuating signals in the actuating signal segment; inputting the time domain feature into a linear classification model to obtain an action discriminating result; and converting the action discriminating result into an electrical signal used for controlling the grabbing action of the artificial limb. The invention has the advantages of low cost, less interference, low hardware requirements and simple operation, and is not easy to be interfered.

The embodiment of the invention discloses a quadrature amplitude modulation qubit demodulation method. The method includes the steps of predetermining a sub-area which each constellation point belongs to on a gray constellation complex plane corresponding to a bit position to be demodulated, wherein each sub-area corresponds to a perpendicular bisector; determining a sub-area which each constellation point containing the corresponding bit position to be demodulated and mapped by a received symbol on the gray constellation complex plane corresponding to the bit position to be demodulated; calculating the perpendicular distance between each received symbol containing the corresponding bit position to be demodulated and the corresponding perpendicular bisector, and making the distances serve as the qubit values of the bit position to be demodulated, wherein the qubit values are positive when each received symbol containing the corresponding bit position to be demodulated is located on the side, with the first bit value, of the corresponding perpendicular bisector, and the qubit values are negative when each received symbol containing the corresponding bit position to be demodulated is located on the side, with the second bit value, of the corresponding perpendicular bisector. The invention further discloses a quadrature amplitude modulation qubit demodulation device. By means of the quadrature amplitude modulation qubit demodulation method and device, the qubit demodulation efficiency can be improved.

The invention provides a flat display device which comprises for pixels arranged along drive lines a voltage drop calculator 27 for calculating a voltage drop occurring in accordance with the position of each pixel, and a video signal converter 30 and a lookup table 31 for correcting the input signal to be supplied to the pixel in accordance with the magnitude of the calculated voltage drop, whereby crosstalk due to the voltage drop is prevented.

A rollover judging device adjusts the magnitude of an angular velocity component ω of a vehicle in a direction of a rollover, which is measured by an angular velocity sensor 1, by using an ω adjusting unit 3c on the basis of an acceleration component of the vehicle in its rightward or leftward direction or in its upward or downward direction, which is measured by an acceleration sensor 2, calculates an angle component θo by integrating with respect to time this adjusted angular velocity component ωo by using an integrator 3d, carries out predetermined multiplication and addition processes by using a judging means 4 on the basis of this angle component θo and the measured angular velocity component ω, and, when the result of this addition process exceeds a preset threshold Th, outputs a signal indicating judgment of occurrence of a rollover to an air bag control device 5.

The present invention pertains to the following: a calibration method, device, and program; and a bodily-fluid component measurement device calibrated using said method. For each of a number of samples (26s), a reference detected value that would be obtained using a reference light source (50s) and an individual detected value that would be obtained using an individual light source (50r) that is of the same type as the reference light source (50s) and is to be installed in a device being calibrated (10c) are estimated. A calibration curve that converts detected values obtained from test strips (26) using the device being calibrated (10c) with the aforementioned individual light source (50r) installed therein to detected values that would have been obtained using the reference light source (50s) is determined on the basis of the relationships between the per-sample (26s) pairs of estimated reference detected values and individual detected values.

Provided is a recording or playback apparatus capable of separating a musical piece from an audio including the musical piece and a speech through a simple arithmetic process. A cut point detector detects, as a cut point, a time point at which an audio signal level or an amount of change in the audio signal level is not lower than a predetermined value. A frequency characteristic amount calculator calculates a characteristic amount in a frequency area of the audio signal only at each cut point and in its proximity. A cut point judging unit judges an attribute of the cut point on a basis of the calculated characteristic amount of the frequency. A music section detector detects a start and end points of each music section on a basis of the attribute and an interval between sampling points.

A basal metabolic rate measuring device capable of measuring the basal metabolic rate of a pregnant woman easily and accurately is provided by improving a known basal metabolic rate measuring device capable of calculating a basal metabolic rate based on the fat free mass data and age data of a subject. The basal metabolic rate measuring device calculates the fat free mass data of the body of a pregnant subject and calculates the basal metabolic rate of the subject based on at least the fat free mass data and age data. The fat free mass data of the body of the subject is calculated based on at least the body height data, body weight data, impedance data and fetal part weight data of the subject by a known basal metabolic rate measuring device provided with fetal part weight data acquiring means.

The invention discloses a fuel oil detecting device. The fuel oil detecting device comprises a pipeline, wherein a pressure sensor and a flow sensor are installed on the pipeline; the middle of the pipeline is a U-shaped section; two sides of the pipeline are a first horizontal section and a second horizontal section; the free end of the first horizontal section serves as an oil return pipe connecting end; a gas quick connector is arranged at the free end of the second horizontal section; probes of the pressure sensor and the flow sensor enter an oil path and are connected with a data acquisition processor, a data display and an alarm through conducting wires to form an operating circuit. The fuel oil detecting device realizes lubricating pipeline fault monitoring by monitoring the pressure and the flow value in the pipeline and performing simple operation processing, is relatively low in investment and maintenance cost, and has a high practical value.

The invention provides a short-time FFT (fast Fourier transform) based signal processing method for an acousto-optic passive receiver. The acousto-optic passive receiver performs short-time Fourier transform on an initial signal to acquire a transformed signal after receiving the initial signal, and performs integral accumulation and high-speed synchronous sampling on the transformed signal to acquire an intermediate signal matrix; the intermediate signal matrix is finally subjected to restoration and tracking correlation, and a time frequency function is created; a data table inquiry mode is adopted, the type of the time frequency function is judged, all parameters of the time frequency function are restored, and a restored signal is taken as a final output signal of the acousto-optic passive receiver and is sent to a user. Real-time performance can be guaranteed by the method, a filter is not needed during overall signal processing, and the process is simple.

An inspection device is provided. This inspection device is a device that performs visual inspection of the surface to be inspected included in the inspection object. The inspection device includes anirradiation device, an imaging device, an image storage unit, and a defect detecting unit. The illuminating device moves on an imaginary plane along the surface of the object to be inspected, and illuminates the surface of the object to be inspected toward the object to be inspected. The imaging device includes the inspection surface of the inspection object in the imaging range, receives the light reflected at the inspection surface, and generates a luminance distribution image as an imaging result. The image storage unit stores a plurality of brightness distribution images captured by the imaging device at a plurality of timings in which the positions of the irradiation devices are different and the inspection surface, the imaging device, and the irradiation device are not arranged in astraight line. The defect detecting unit detects a defect on the surface to be inspected based on a plurality of different brightness distribution images.

The invention relates to a method for extracting relative shake information of a target in a three-dimensional image. The method includes the steps of converting original echo into a distance compressed domain according to the form of transmitted signals to obtain signals S1 (x, y and z); acquiring absolute values of the signal S1 (x, y and z), and accumulating the absolute values in an x-direction to obtain an accumulated signal S21 (y and z); subjecting two adjacent sequences of the signal S21 (y, z) in a y-direction to related processing, and marking a signal at a peak as a signal dez (y); subjecting the signal dez (y) to y-directional integration to obtain a relative movement displacement signal ez (y) of the target; enveloping and aligning the signals S1 (x, y and z) through the relative movement signal ez (y) to obtain signals S3 (x, y and z); acquiring two two-dimensional sequences in the y-direction from the signals S1 (x, y and z) or the signal S3 (x, y and z), conjugating one two-dimensional sequence, multiplying the same by the other two-dimensional sequence, and acquiring a phase, marked as dep (y), of an average result of a product; subjecting the phase dep (y) to y-directional integration to obtain a relative movement initial-phase signal ep (y) of the target.

The invention discloses a ceiling fan motor, comprising a stator iron core, a coil and a shaft core; the coil is arranged in the stator iron core; the shaft core is arranged on the middle part of the stator iron core; the peripheral of the stator core is uniformly provided with magnets; the stator iron core is provided with fixing racks for fixing positions of the magnets; grooves re arranged inside the fixing racks; and the magnets are arranged inside the grooves. The beneficial effects of the ceiling fan motor are that: the fixing racks and the grooves are adopted for fixing magnets, which simplifies the structure, and the motor is light, which is easy to produce and transport by the current logistics; the ceiling fan motor adopts the magnets without the magnetic-conducting magnet yoke, which saves the energy and solves the problem that the prior art adopting the coil lacks of the excitation; the retaining screw is fixed on the outside of the magnet, which does not affect the magnetic path, the motor conversion rate is high and the operation is smooth; the groove structure is adopted to simplify the motor driving device operation processing; and the plastic fixing rack is adopted to enhance the security.