136 results about "Full cycle" patented technology

A column slice of a CMOS TDI sensor includes a column bus, a column of pixels, plural first switches, a column of accumulators, plural second switches, plural third switches and output bus 39. Each of the plural first switches is coupled between the column bus and a corresponding pixel of the column of pixels, and each of the plural second switches is coupled between the column bus and a corresponding accumulator of the column of accumulators. In operation, only one switch at a time of plural first switches is “on” to connect the voltage signal from a corresponding pixel to the column bus while all remaining plural first switches are “off” to isolate the column bus from all remaining pixels. Only one of the plural second switches is “on” to connect the signal on the column bus to an accumulator while all remaining plural second switches are “off” to isolate the bus from all remaining accumulators. A main control circuit includes first and second shift registers to control the plural first and second switches to couple a signal from each pixel of the column of pixels into a corresponding accumulator of the column of accumulators while updating the accumulator until signals from all pixels have been transferred into corresponding accumulators. After this update cycle, an accumulated signal from the one accumulator that is currently addressed by a third shift register is read to the output. Then, the first and third shift registers are incremented. A new update cycle begins when a point in a moving image focused on the column slice crosses a pixel boundary. The same pattern repeats continuously. Valid TDI data is produced at the output after a number of full cycles of the transfer of pixels signals to the accumulators has been complete, the number being equal to the number of pixels.

A method for controlling power to an electrical load using dual pulse width modulation (PWM) to minimize in-rush current to the electrical load, such as a heater element. An output from a power source, supplying an alternating current, is modulated by a first PWM control signal to provide a first modulated power level to the electrical load. The first modulated power level is modulated by a second PWM control signal to control power supplied to the electrical load at the first modulated power level. The first PWM control signal operates to control the number of half cycles of current in order to provide one-third, two-thirds or full cycle power. The second PWM control signal operates to define a duty cycle and period for providing the power defined by the first PWM control signal to the electrical load.

The present invention relates to a power transformer asset management device and a method thereof, the device according to the present invention including: a full cycle database managing full cycle data of a power transformer; a physical performance evaluation unit performing physical performance evaluation that calculates a health index by analyzing and weighting life information, a failure ratio, operation history, and status information of a preventive diagnosis system from the full cycle data; a risk evaluation unit performing risk evaluation by generating a risk matrix using the physical performance evaluation result; an economic evaluation unit performing economic evaluation by evaluating costs over a full cycle of the power transformer; and an asset management unit establishing an investment plan for replacing the power transformer according to a maintenance priority of the power transformer determined using the physical performance evaluation result, the risk evaluation result, and the economic evaluation result.

The invention provides a method and a device for tracking a global positioning system precision (GPS P) and/or Y code signal of a full-cycle carrier. The method comprises the following steps of: generating a local P code through coarse/acquisition (C/A) code guide of an L1 satellite signal; correlating the L1 satellite signal and an L2 satellite signal to the local P code respectively; performingprimary accumulation with W bit length on the correlation result, multiplying in a crossed way, and then performing secondary accumulation to obtain secondary accumulation results of the L1 satellitesignal and the L2 satellite signal respectively; and tracking a code ring and a carrier ring of the L1 satellite signal and the L2 satellite signal according to the secondary accumulation results of the L1 satellite signal and the L2 satellite signal. By the method and the device, full-wavelength restoration of the carrier can be realized on the L2; and higher signal-to-noise ratio is achieved.

A time synchronization device (TSD) that produces a synchronization signal and couples it onto energized power conductors in a power monitoring system. Monitoring devices coupled to the TSD include frequency detection algorithms, such as a Goertzel filter, for detecting the synchronization signal and interpreting the information encoded in the signal. The frequency of the synchronization signal may correspond to the fourth or tenth harmonic component of the fundamental frequency of the voltage on the power conductors. The magnitude of the signal is selected to be above the expected or established noise floor of the power monitoring system plus a predetermined threshold. The duration of the signal can be varied, such as lasting a full cycle of the fundamental frequency. Multiple TSD signals received in a predetermined sequence may be converted into digital words that convey time, configuration, reset, control, or other information to the monitoring device.

The invention provides a calculation method of a filter-divider plus full-cycle Morlet complex wavelet amplitude, comprising the steps: (1) supplying power on a micro-computer protection device; (2) giving an initial value to k, frequency width adjusting coefficient c and a sampling point number N to the periodic signal of electric elements in a period; (3) working out the proportion coefficient Tau according to an Morlet complex wavelet discrete expression: Psi(n) equals to Tau multiplied by exp[-(6n/N-3)<2>/c] multiplied by exp(j2pikn/N) and a formula: Tau equals to N/Sigma|Psi(n)/Tau|n; wherein, n equals to 1, 2, ellipsis, N minus 1; (4) calculating the real par of Morlet complex wavelet according to a formula: Psi<R>(n) equals to Tau multiplied by exp[-(6n/N-3)<2>/c] multiplied by cos(2pikn/N); (5) calculating the virtual part of the Morlet complex wavelet according to a formula: Psi(n) equals to Tau multiplied by exp[-(6n/N-3)<2>/c] multiplied by sin(2pikn/N); (6) taking f(s) as sampling frequency so as to obtain the discrete sequence f(n) of the periodic signal of the electric element in a period; wherein, f<s> is equal to N multiplied by f; and f is the fundamental frequency of the periodic signal; (7) obtaining the discrete sequence g(n) according to a differential filter equation: g(n) equals to f(n) minus f(n minus N/2); (8) Calculating the amplitude according to a formula: Fk(n) equals to (g(n) Psi<R>(n)<2> plus g(n) Psi<1>(n))<2>. The method provided by the invention can filter the attenuation DC component and has small calculation result error when the power network frequency fluctuates.

A modeling system includes a processor with software that performs static timing analysis (STA) on a design model. STA software executes a static timing analysis (STA) run with shortened clock cycles to model full cycle clock variability. Designers or other entities interpret the results of the shortened STA run data by performing modeling on the output data to generate slack data for design model data paths. STA software executes an STA run with an extended clock cycle to automatically separate half cycle data path (HCDP) slack data from full cycle data path (FCDP) slack data. The full and half cycle clock variability method may automatically adjust slack data for all half cycle data paths (HCDP)s to account for the additional half cycle variation (AHCV) and half cycle clock edge variability that may penalize the design model results in a real hardware implementation. Designers use a sort of slack data for half cycle data paths (HCDP)s independent of the slack data for the full cycle data path (FCDP)s to modify or otherwise perform design changes to the design model prior to hardware implementation.

A telemetry device includes a resonant inductive link with a primary LC tank and secondary LC tank configured to resonate at a carrier frequency. A modulator assembly in communication with the secondary LC tank implements data-synchronized cyclic on-off keying modulation (COOK) to periodically create a short across the secondary LC tank in response to a pulse from a phase selector and phase-locked loop. During the full cycle-length of the short, data can be transmitted across the inductive link while the charge across the secondary LC tank is preserved. Power may be transferred across the link during non-shorted cycles.

A communication system for a power line is described. A transmission system of the communication system divides the time axis into a number of time slots synchronized such that one time slot can start about a zero crossing of the power line signal. These time slots are referred to as channels and are numbered from 1 to n. A modulation method is described to is narrow band continuous phase FSK, where a number m of modulating frequencies are used, arranged such that an integral number of full cycles fit into each channel time slot for all m frequencies. The system transmits during only a subset of the available time slots (channels) concentrated near the zero crossing of the power line waveform where the noise is typically minimal.

Optimization method with parallel computations, including performing multiple stages of calculating target function of P independent parameters using GPUs, wherein entire one-dimensional array of the calculated values of the target function of length

that needs to be computed is divided into groups of size η and calculated in parallel at

η parameter points; a number of simultaneously calculated parameters η in each group and a number of calculation points W_j of the target function at interval D_j for each j-th desired parameter in the group is selected based on a possible number of parallel calculations R=G·M·T, where G is number of GPUs, M is number of cores in each GPU, T is number of threads in each core; and outputting the calculated P parameters for the global extremum of the target function, wherein a full cycle of calculating points is carried out for consecutive iterations, defined as integer division

rounding up.

The invention discloses an electric-gas distribution network flexible planning method considering a flexible constraint and full cycle cost. The method comprises the following steps of 1) establishingan electric-gas distribution network typical planning model based on CCHP coupling, which includes establishing a target function and a constraint condition; 2) introducing flexible planning elements, which includes a flexible power flow constraint and full-cycle planning cost; and 3) forming a flexible planning model and solving, which includes flexible planning model description and call MOSEKsolution. A CCHP-coupled electric-gas distribution network power flow model based on a second-order cone model is established. In the model, non-convex and nonlinear terms in a traditional power flowequation are eliminated and effective solution can be performed while calculation accuracy is ensured. For various uncertainties in planning, the concept of the flexible constraint is introduced intothe planning model, which improves the robust adaptability of a planning scheme to various uncertain factors.

The invention discloses a quick and nondestructive testing method for a road axle load spectrum, wherein the method belongs to the field of road engineering prospection and design. The quick and nondestructive testing method is a full-section axle load spectrum which is performed without traffic interception. Furthermore representative traffic load sample data are acquired, thereby supplying traffic load data which accord with an actual traffic load condition for road surface maintenance design and preventative maintenance decision. Compared with the prior art, the quick and nondestructive testing method for the road axle load spectrum has advantages of high mounting speed, no pavement damage, high movement flexibility, effective recyclability, etc. The quick and nondestructive testing method can be used for performing axle load investigation on a designed road, thereby obtaining an actual driving load, truly reflecting pavement load condition of the road, and supplying reliable design basis for road engineering design. Furthermore the quick and nondestructive testing method has important function and meaning on prolonging service life of the pavement structure, reducing full-cycle cost of the road and promoting environment-friendly traffic transportation construction.

The invention provides a differential protection method for preventing abnormally great number of sampling values. The differential protection method includes steps of starting sudden change of current or current effective value when abnormally great number of sampling values of a device to be protected is generated; after starting protection, waiting for a cycle of data, and starting allowance criteria if the abnormally great number of the sampling values in one cycle is continuously or intermittently generated and data calculated by full-cycle Fourier algorithm satisfy action criteria. The differential protection method is applicable to various differential protections such as differential protection of transformer and other quick-break actions, and the problem that misoperation of the protection device is caused by abnormalities of the sampling value of a data acquisition system of the protection device when electromagnetic interference occurs at the mounting position of the protection device or hardware of the protection device is abnormal is avoided.

A system and method for detecting/calculating engine cycles, tracking engine cycles and correlating the engine cycles to parts to measure accumulated cycles associated with the parts. A system is disclosed that includes a parts tracking system for tracking serialized parts contained within the machine; an interface for importing cycles data on the machine via a remote data collection unit, wherein the cycles data includes full cycle, partial cycle, and trip cycle data; and a cycles calculation system for calculating accumulated cycles for each of the serialized parts contained within the machine based on the imported cycles data.

The invention relates to a full-cycle or half-cycle synchronous frequency measurement corrected digital demodulation detection system and detection method of amplitude-modulated signals. The full-cycle or half-cycle synchronous frequency measurement corrected digital demodulation detection system and method can be adopted to realize the amplitude detection of the amplitude-modulated signals. According to the detection system, a micro controller unit is adopted to control a high-speed analog-to-digital conversion unit to perform signal acquisition, and lock-in amplified digital integral and filtering can be realized through absolute value cumulative averaging calculation; and the starting point of a full cycle or a half cycle is captured, and the frequency of the signals is measured through using high-frequency counting, and frequency correction is performed on a detection result. Compared with an existing detection system using a lock-in amplifying circuit, the detection system of the invention has the advantages of simple circuits, no middle debugging process and high detecting precision; compared with an existing simplified digital demodulation detection system, the detection system of the invention can assist in decreasing system detection noise and improving detection accuracy under the premise that the complexity of the circuits and algorithms as well as detection time and cost are not increased.