58results about How to "Accurate Power Consumption" patented technology

The invention relates to an IGBT (insulated gate bipolar transistor) dynamic performance test device, which comprises a test current generating circuit, a first temperature collection and storage system, a second temperature collection and storage system, an oscilloscope, an IGBT driving circuit and an IGBT over-temperature protection system, wherein the IGBT over-temperature protection system is connected with the IGBT driving circuit, the test current generating circuit, the first temperature collection and storage system, the second temperature collection and storage system and the oscilloscope are respectively independent, and during testing, an IGBT test module is respectively connected with the test current generating circuit, the first temperature collection and storage system, the second temperature collection and storage system, the oscilloscope, the IGBT driving circuit and the IGBT over-temperature protection system. The IGBT dynamic performance test device has the advantages that the accumulated heat of an internal heating chip and the heat of a copper base board of an IGBT module can be simultaneously and automatically collected, further, the heat resistance parameters of the module can be extracted, and the work frequency of the IGBT module can be adjusted in real time.

The invention discloses an electricity consumption intelligent prediction system and method, wherein the system comprises an intelligent electricity consumption terminal (1) as well as an electric energy collecting module (2) used for managing real-time data collection, a local storage management module (3), a predication point prediction value analyzing and calculating module (4) and a GPRS (general packet radio service) communication control module (5) which are respectively connected with the intelligent electricity consumption terminal (1), wherein the GPRS communication control module (5) is in charge of communication transmission control; and a core prediction processing algorithm of the predication point prediction value analyzing and calculating module (4) adopts a BP (back propogation) neural network. According to the invention, users can be informed of the electricity consumption situation in advance, and effective electricity consumption optimization suggests are provided for the users by combining with the electricity consumption optimization algorithm, the electricity consumption habits of users are improved, unnecessary electricity expenditure of electric appliances of the users is avoided, and electricity expense is saved for the users economically; and the power grid fluctuation caused by electricity consumption in peak time for the users can also be lowered, thus a power grid is more stable, more stable electricity power conveying is provided, the electricity consumption quality of residents is improved, and the production of enterprise electricity power users of production, manufacturing and the like operates stably.

The invention relates to an auxiliary electric heating device used for a vehicle and an auxiliary electric heating method for a vehicle, which comprises a switch part that comprises one or a plurality of switch units and is used for opening and closing a battery voltage by carrying out a switch operation according to a PWM signal; a heater part that comprises one or a plurality of heater units which is connected with the switch units; a current detecting part that detects the current flowing through the heater part; a control part that compares the voltage information of the battery voltage being received with a reference voltage, wherein, if the voltage information is lower than the reference voltage, heating power proportionate to the battery voltage is set as target power, whereas the voltage information is higher than the reference voltage, and preset maximum heating power is set as the target power so as to generate the PWM signal with a PWM duty cycle relative to the set target power and to impose to the switch unit. According to the detecting current of the current detecting part, consumed power actually being consumed is calculated, and the PWM duty cycle of the PWM signalis regulated according to the calculated consumed power and the target power.

Path computation involves determining (120, 930) an aggregate cost for a portion of the path, based at least on the power consumption attributable to use of interfaces along that portion, comparing (130, 930) the portion of the first possible path with a different portion corresponding to a different possible path for the traffic request, based at least on their respective aggregate costs, and selecting (140, 930) which portion to use for the traffic request based on the comparison. Having path selection influenced by the power consumption values, can lead to lower overall consumption in operation than relying only on optimizing nodes individually without regard to how the nodes are used. Path selection can take into account indications of which parts are in a power down mode, and can involve powering up such parts if needed.

The present invention provides a power supply apparatus including a system linkage inverter. The power supply apparatus has a simple facility structure and is capable of accurately supplying a dummy load with excessive electric power that changes from time to time. The power supply apparatus has a system linkage inverter (13) for inversely transforming DC electric power into AC electric power and supplying the AC electric power to a load (17) connected to a system power supply (20), a dummy load (21) connected parallel to the load (17) through a power device (22), a circuit (28) for detecting electric power flowing from the load to the system power in every constant time, a calculating unit (29) for accumulating the detected electric power, and a control unit (30) for turning on and off the power device for the dummy load based on a state value of an electric power flow calculated by the calculating unit.

The embodiment of the invention discloses an electricity quantity distributing method of a frequency conversion multi-connected central air-conditioning machine set for accurately calculating external shared inner electricity quantity shared to indoor machines at a start-up state by an outdoor machine and actual electricity using quantity of the indoor machines. The method of the embodiment of the invention comprises the following steps of: acquiring electricity meter number within the time delta T, wherein the delta T is greater than 0; calculating the theory consumed electricity quantity of each indoor machine within the time delta T under a working state, and the total theory consumed electricity quantity of all indoor machines within the time delta T; calculating the external shared inner electricity quantity of each indoor machine at the start-up state by the outdoor machine within the time delta T according to the electricity meter number, the theory consumed electricity quantity and the total theory consumed electricity quantity; and calculating other shared electricity quantities and the actual electricity using quantity of the indoor machines.

In a liquid crystal display device, the reduction of power consumption is realized by reddening a backlight while maintaining a white balance. An aperture ratio of a red subpixel and an aperture ratio of a blue subpixel are set such that, in a state where an aperture ratio of a green subpixel in each pixel of a liquid crystal panel is fixed to a desired value, white brightness efficiency takes a maximum value which is set based on a balance between light emission efficiency which is increased corresponding to lowering of a color temperature of the backlight and transmissivity of the pixel which is decreased corresponding to the increase of the aperture ratio of the blue subpixel.

The invention is suitable for the technical field of air conditioners and provides a method, a device and a system for controlling power consumption of an air conditioner. The method includes receiving a set air conditioner power consumption grade instruction, acquiring running parameters corresponding to the power consumption grade instruction, and controlling the air conditioner to run according to the running parameters to enter a corresponding low-power-consumption state. A plurality of power consumption grades are set for the air conditioner, different power consumption grades correspond to different power consumption requirements, and the air conditioner is controlled to enter the corresponding low-power-consumption states through power consumption grade requirements issued by a government power department or selected by users themselves, so that the objective of accurately controlling power consumption of the air conditioner is achieved.

A method of efficient pocket detection is proposed. A wireless device determines whether it is in a transition state by using a plurality of low power-consuming sensors. The wireless device powers on a high power-consuming sensor if the device is in the transition state, or otherwise keeps the high power-consuming sensor off if the device is not in the transition state. The wireless device detects a current pocket mode of the device using the high power-consuming sensor if the device is in the transition state, or otherwise keeps a previous pocket mode if the device is not in the transition state.

A method of and device for predicting the power consumption of a battery-powered mobile terminal (15) used for carrying out a sequence of user activities. Each user activity involves an interaction with the terminal and each user activity causes one or more terminal activities involving power consumption of the terminal. The method comprises the steps of: determining (4), for each user activity, which terminal activities it causes, carrying out (6) a series of user activities (2a, . . . , 2m), the terminal activities (Ia . . . In) of the series involving at least all terminal activities of the sequence, measuring (6) the power consumption of the terminal while carrying out the series of user activities, deriving (10) the power consumption of each terminal activity from the measured power consumption of the terminal, adding (12), for each of the user activities of the sequence, the stored power consumption of the respective terminal activities caused by the particular user activity to obtain the power consumption of the respective user activity, and adding (14) the respective power consumption of the user activities of the sequence to obtain the power consumption of the sequence.

The invention provides a refrigerator with an inverter and a power consumption calculation method thereof and a power consumption calculation display system. The refrigerator with the inverter comprises an inverter compressor, a plurality of other electric parts, a main control board and an inverter control board. The power consumption calculation method of the refrigerator with the inverter comprises the steps of A, acquiring working current and working voltage of the inverter compressor from the inverter control board at the preset sampling time intervals within the statistical time quantum; B, acquiring the instant power of the inverter compressor at the sampling time point according to the acquired working current and working voltage; C, calculating the power consumption quantity of the inverter compressor within the statistical time quantum according to each instant power. According to the method, the working current and the working voltage of the inverter compressor are acquired from the inverter control board of the refrigerator with the inverter so as to obtain the power consumption quantity of the inverter compressor; extra sensor is saved; the cost is low; the calculation is accurate.

The invention relates to the field of optical communication, and discloses a power consumption measurement circuit and method for an optical module. The power consumption measurement circuit comprisesa current sampling resistor, a differential amplifier, a voltage sampling resistor, a first sampling unit, a second sampling unit and a power consumption calculation unit; the two ends of the currentsampling resistor are connected to an external power supply and the measured optical module respectively; the two input ends of the differential amplifier are connected to the two ends of the currentsampling resistor respectively, and the output end of the differential amplifier is connected to the input end of the first sampling unit; the first end of the voltage sampling resistor is connectedto the second end of the current sampling resistor, and the second end of the voltage sampling resistor is connected to the input end of the second sampling unit; the output end of the first samplingunit and the output end of the second sampling unit are connected to the power consumption calculation module; and the power consumption calculation module is used for calculating the power consumption of the measured optical module according to sampling values of the first sampling unit and the second sampling unit. According to the power consumption measurement circuit and method, the power consumption measurement precision is high and can reach +/-3%, and the measurement range is wide.

The invention provides a calculation method and system for PTC heating power and an air conditioner. The calculation method for the PTC heating power includes the steps that the current sampling value of at least one performance parameter of the air conditioner is obtained through at least one sampling module; the current sampling values of the performance parameters are input into a software digital model module of the air conditioner; the current PTC heating power of the air conditioner is obtained through calculation according to the current sampling values of the performance parameters and a power calculating digital model preset in the software digital model module. According to the technical scheme, it is unnecessary to add extra hardware cost, the PTC heating power can be calculated accurately just through an existing hardware platform and software modeling means of the air conditioner, then the power consumption of the air conditioner can be obtained accurately, market competitiveness is improved, a user can check the whole conditioner operation condition of the air conditioner in real time conveniently, and therefore the user experience is promoted.

The invention discloses an electricity use control and monitoring method of a washing machine. The electricity use control and monitoring method comprises the following steps of executing a washing program by the washing machine, and detecting a clothing load amount m; after the washing machine finishes washing, obtaining the working time t1 of a motor; calculating the electricity consumption of the washing machine by the washing machine according to a formula of that W is equal to tha sum of the Wmotor and W0, wherein Wmotor is equal to k*P1*t1; k is a correction coefficient; k is in direct proportion to m; P1 is the rated power of the motor; W0 is the preset value of an electric component of the washing machine. According to the monitoring, by the electricity use control and monitoring method, of the electricity consumption of the washing machine, the monitoring is carried out mainly aiming at the electricity consumption of the main working device-motor in a washing process; by combining the characteristic of the washing process of the washing machine, a formula of calculating the electricity consumption of the motor is given out; in consideration of a main factor influencing theworking of the motor, the formula is corrected, so as to obtain a more accurate calculation result; therefore, an electricity consumption calculation method of the electricity use control and monitoring method is more accurate for the calculation result of the electricity consumption of the motor and the calculation of the electricity consumption of the washing machine is fundamentally ensured tobe in an error-tolerant range.

The novel architecture for digital signal processing systems, comprising a number of blocks with means for power measurement is disclosed. The energy of execution of the software on the said system is evaluated as integral of execution power over time. The method of energy profiling of software is disclosed that reveals in which tasks of the software, and in which blocks of the hardware and what amount of energy is spent in the execution. The novel energy optimization methods in software development, compilation, debugging, profiling, optimization, execution, updating and hardware development are disclosed.

The invention provides a power consumption monitoring method and system. The method comprises the steps of generating first voltage with a first voltage value via supply voltage input by an external power supply, outputting the first voltage to each hard disk, determining current passing through a hot plug chip, and calculating the corresponding total power consumption of all the connected hard disks according to the supply voltage and the current. According to the method, the hot plug chip is connected with the external power supply and the at least one hard disk, and the actual power consumption of all the connected hard disks can be obtained directly; and compared with rated power consumption, the actual power consumption is more accurate and can reflect actual working states of the hard disks.

The invention discloses a method and system for monitoring the power consumption of a server component. The method comprises steps of determining an input current of the server component according toa current flowing through a power resistor of a server, and enabling the input current to be a voltage signal; an ADC voltage division circuit being used for collecting the input voltage of the servercomponent at the server component end; and calculating the power consumption of the server component according to the product of the input current and the input voltage. The system comprises an E-Fuse chip, an ADC module and a BMC, wherein a current pin of the E-Fuse chip is connected with the ADC module, the ADC module is in communication connection with the BMC through an I2C bus, and the ADC module is further connected with a server component end. According to the method, accuracy of the input voltage can be improved, so monitoring precision of component power consumption is effectively improved.

The invention relates to an LED lighting device which comprises wireless communication relay equipment, a light source driver module, a control unit and a light source module, wherein a preset value of each working state of the light source module is prestored in the control unit; the control unit sends a lighting characteristic adjusting instruction to the light source driver module via the wireless communication relay equipment and calculates the electricity consumption of the LED lighting device on the basis of the time parameter of the instruction and a preset power value. The electricity consumption of the LED lighting device and each module in the LED lighting device can be measured accurately, and whether each module breaks down or not can be judged according to the electricity consumption.

The invention discloses a power tester for an electric device, comprising a voltage transformer, a current transformer, an A/D (Analog-to-Digital) conversion module, a parameter input unit, a theoretical working current conversion module, a theoretical working voltage conversion module, a current average processing module, a voltage average processing module, a timing circuit, a statistic time clearing preset key, a display unit and a controller, wherein the A/D conversion module is respectively connected with the current transformer and the voltage transformer; the timing circuit is used for counting the actual working time of a tested electric device; and the controller is used for calculating the electric power and electric consumption of the tested electric device according to average processing results of the current average processing module and the voltage average processing module by combining working time mounted by the timing circuit. The power tester is reasonable in design, convenient to install and arrange, simple and convenient in use and operation, high in intelligent degree, good in using effect and capable of effectively solving various practical problems such as lower detection precision, not high intelligent degree, incapability of directly inquiring electric consumption and the like existing in the traditional electric power testing device.

A monitor device is provided for monitoring a lighting arrangement of lighting elements of unknown electrical load, and a driver using the monitoring arrangement. A set of duty cycles is applied to switches which control sub-sets of lighting elements thereby to create a desired light output. With this desired duty cycle setting, the current for an individual duty cycle period is monitored, in particular to detect variations in a current plateau level within the individual duty cycle period. This is used to determine electrical characteristics or parameters including at least a cable resistance between a power supply unit and the lighting arrangement. A power consumption of the lighting arrangement may then be obtained. This avoids the need to probe the sub-sets of lighting elements individually in order to determine the nature of the load and its power consumption.

The present invention relates to an automatic power consumption regulation device of plasma display screen. Said device includes main controller, waveform generator, plasma display screen, video processor and external memory. Besides, said invention also provides its regulation method.

This specification relates to a central control apparatus, which is configured to calculate time-division power usage as predicted power usage, which is consumed by at least one facility in a control area within a specific time section, on the basis of predicted external temperature corresponding to the control area within the specific time section and a time-division model, calculate variable-based degree day (VBDD) daily power usage as predicted daily power usage corresponding to the control area on the basis of the predicted external temperature and a VBDD model, and calculate final power usage as final predicted power usage consumed in the control area within the specific time section on the basis of the time-division power usage and the VBDD daily power usage, and a facility control system including the same.