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531 results about "Metering mode" patented technology

In photography, the metering mode refers to the way in which a camera determines exposure. Cameras generally allow the user to select between spot, center-weighted average, or multi-zone metering modes. The different metering modes allow the user to select the most appropriate one for use in a variety of lighting conditions. In complex light situations professional photographers tend to switch to manual mode, rather than depending on a setting determined by the camera.

Intelligent electric meter main control chip and security encryption method

The invention provides an intelligent electric meter main control chip. The intelligent electric meter main control chip comprises an internal bus, a main processor module, a data storage module and at least one application module, wherein the main processor module, the data storage module and the application module are connected to the internal bus, and the application module comprises a metering module. A security control module is further integrated inside the chip, is connected to the internal bus and has a security encryption function. The chip further comprises a storage protecting module, wherein the storage protecting module is connected between the main processor module and the internal bus and is configured for shielding illegal memory access instructions. Due to the fact that the security control module is arranged inside the main control chip and connected with a center processing module through the internal bus, security holes of a security control chip of an application software bypass of an intelligent electric meter terminal can be effectively avoided, and meanwhile production and testing cost is reduced. The invention further provides a security encryption method based on the intelligent electric meter main control chip and a certificate authorization center, and security of an electric system is guaranteed further.
Owner:SHANGHAI BEILING

Online real-time calculation and analysis method of equipped wire loss

InactiveCN103995962ADoes not affect independent marketing line loss applicationsData processing applicationsElectrical testingAnalysis dataLow voltage
According to an online real-time calculation and analysis method of equipped wire loss, read electric quantity calculation and transformer power loss electric quantity calculation are performed, wherein an instrument error between an obtained collected integral point display number and a last integral point display number is multiplied by a multiplying power, and the read electric quantity of a main metering point is calculated; for electricity customers with a metering mode of high-voltage-side power supplying and low-voltage-side metering and without an examination meter on the high voltage side, when integral point electric quantity is calculated, the integral point transformer power loss electric quantity of a transformer is calculated according to user profiles and the type of the transformer based on the integral point read electric quantity; the read electric quantity of the main metering point is calculated according to the display number difference between an obtained collected daily zero point display number and a zero point display number of the last day is multiplied by the multiplying power. The online real-time calculation and analysis method has the advantages that the function of copying and reading data in real time is achieved, and the function becomes an important means for wire loss monitoring and analysis. Important analysis data such as instantaneous magnitude and alarming information are obtained, all system module data are integrated, high-speed calculation of mass data can be conducted independently, and independent marketing wire loss application of the function of an existing system is not affected.
Owner:STATE GRID CORP OF CHINA +1

Intelligent socket and control method thereof

The invention discloses an intelligent socket and a control method thereof, and relates to the technical field of sockets. The intelligent socket comprises a shell, a control module, a switch, an Internet of things wireless communication module, a metering module, a temperature sensor and a power supply module, wherein the shell is provided with a two-dimensional code; the control module is connected with a control end of the switch, the Internet of things wireless communication module, the metering module and the temperature sensor, the control module is used for controlling power utilization information acquisition and processing of the Internet of things wireless communication module, the switch and the metering module and data acquisition and processing of the temperature sensor; the switch is used for controlling on-off of a power utilization circuit of an electricity consuming load; the Internet of things wireless communication module is used for performing communication with a base station; the metering module is used for acquiring electricity consumption information of the electricity consuming load; the power supply module is used for acquiring electric energy from a live line and providing operating current for the control module and the Internet of things wireless communication module. The intelligent socket is enabled to be long in communication distance, low in power consumption and low in cost while realizing electricity quantity metering.
Owner:TSINGHUA UNIV

Material metering control method and material metering control device

ActiveCN102175294AOvercome the shortcomings of manual input of blanking difference to improve accuracyHigh measurement accuracyWeighing apparatus with automatic feed/dischargeProgrammable logic controllerNonlinear regression
The invention relates to a material metering control method and a material metering control device. The material metering control method comprises the following steps: starting metering: starting a material bin metering door, guiding the material in a material bin to fall onto a metering scale and starting recording the metering time (t); confirming the time of closing the material bin metering door: according to a required target material weight (mB), utilizing a PLC (programmable logic controller) to calculate and confirm the time (tA) of closing the material bin metering door and the weight (mA) of the material in the scale at the moment by utilizing a linear or nonlinear regression method; and closing the material bin metering door: closing the material bin metering door when the metering time reaches the time tA or the weight of the material in the scale is equal to mA. According to the material metering control method and material metering control device provided by the invention, the mechanical structure of the metering scale is simplified and the metering precision and metering efficiency of a metering system are efficiently increased.
Owner:常德市三一机械有限公司

Energy-saving metering method for communication base station

The invention discloses an energy-saving metering method for a communication base station, and the method provided by the invention is mainly used for calculating the energy consumption based on the data acquisition part of an energy-consumption metering system. The method comprises the following steps: (1) solving the relationship of the energy efficiency ratio of energy consumption equipment, such as air conditions, indoor temperature and outdoor temperature, and obtaining a correlative expression; (2) calculating the reference power consumption amount of the energy consumption equipment: calculating the reference power consumption of the energy consumption equipment by utilizing the actual measurement data within the operation cycle when an energy-saving measure is adopted; and (3) calculating the power saving amount of the energy-saving measure: calculating the power saving amount by utilizing the actual measurement data within the operation cycle when the energy-saving measure is adopted. The method provided by the invention is objective, simple, accurate and precise to meter, the information is shared by means of the Internet of Things, query is convenient, and an important basis is provided for selecting energy-saving equipment, formulating an energy-saving scheme and calculating energy-saving benefits.
Owner:陈欣

Metering system and control method for liquid vending machine

The invention relates to liquid vending technology, which discloses a metering system and a control method of a liquid vending machine, which solves the problem of inaccurate metering in the traditional intelligent liquid vending machine adopting a weighing method. The metering system includes a metering system unit and a control system unit; the metering system unit includes pipelines, one-way valves, pumps, static barrels, liquid barrels, vent valves, liquid level switches, liquid valves and flow meters; the control system unit includes single-chip microcomputer control The pump and the power supply connected thereto; the liquid inlet end of the pump extends into the liquid bucket through the pipeline, and the liquid outlet end is connected to the liquid inlet end of the static bucket through the pipeline, and the liquid outlet end of the static bucket is passed through The pipeline is connected to the liquid inlet end of the flowmeter; the liquid outlet end of the flowmeter is connected to the liquid valve through the pipeline; the top of the liquid bucket is provided with a one-way valve; the top of the static bucket is provided with a vent valve, and the side is provided with a liquid level switch; The single-chip microcomputer controller is connected with the control terminals of the pump, the vent valve, the liquid valve, the liquid level switch and the flow meter.
Owner:四川长虹技佳精工有限公司

Steam flow rate metering device and metering method therefor

Provided are a steam flow metering device and a metering method therefor. The device mainly comprises a mono-energetic gamma sensor (5), a Venturi-type flowmeter (6), a temperature transmitter (2), a pressure transmitter (3), a pipe connection section at the steam-inlet (1), and a pipe connection section at the steam-outlet (7), the function thereof being to measure the quantity of saturated water and saturated steam within the steam effectively and in real time. The measuring method thereof is: measuring the dryness of the saturated steam at the cross section by the mono-energetic gamma sensor (5); measuring the mass flow of the total steam by the Venturi-type flowmeter (6), and at the same time considering the potential slip (the phase velocity difference) existing in the saturated steam and the saturated water, such that the quantity of saturated steam, the quantity of saturated water and the corresponding thermal values thereof can be calculated in real time by a computer system by utilizing the method of analytical solution to the vapour / liquid annular flow slip. The vapour and the liquid phases in the steam can be directly distinguished and measured by the present measuring method. The present method is different from the conventional method of single-phase metering encryption correction, has no additional error, there is no influence from the type of flow and the phase change between the vapour and liquid, and has a higher measuring precision.
Owner:CHEN JIGE +3

Agricultural planting machine having interchangeable seed meters

Each opener of a seed planting machine may be essentially tool-free equipped with a selected one of two or more types of interchangeable singulating meters. Each type of meter is mounted on its own adapter plate to present a module that has quick-attach mounting projections arranged and configured in an identical manner to all other modules. The projections fit into mating slots on an upright member of the opener, and the upper projection of each pair is in the nature of a downturned hook that facilitates hanging the module on the opener while also retaining it against fore-and-aft displacement. A stabilizing clip at the rear of the module securely receives the lower, rear edge of the adapter plate, and an over-center toggle latch securely retains the plate within the stabilizing clip to complete the solid yet readily removable attachment of the meter to the opener. A chain drive assembly for the meter is permanently installed on the opener so as to not be removed therefrom during interchanging of the meters. A support plate for the drive assembly is normally close to the meter in an operating position but can be swung outwardly to a release position when a latch between the support plate and the metering module is released, thus disengaging the drive assembly from the meter and providing clearance for the metering module to be lifted and removed from the opener.
Owner:GREAT PLAINS MFG INC

Online total nitrogen analyzer and detection method thereof

The invention relates to an online total nitrogen analyzer and a detection method thereof. The online total nitrogen analyzer comprises a peristaltic pump for providing sampling power, a metering module, a multiport valve, high-temperature and high-pressure valves, a detection module, and a high-temperature decomposition module, which are connected through a pipeline. The peristaltic pump is communicated with the metering module through the pipeline; the upper end of the metering module is communicated with the peristaltic pump, and the lower end is communicated with the multi-way valve; the multiport valve is communicated with a common pipeline of the metering module, the high-temperature decomposition module, the detection module, and a water sample, a measuring scale, a zero scale, liquid waste and at least one reagent pipeline in a reagent bin through different pipelines; the high-temperature and high-pressure valves are arranged at the upper and lower ends of the high-temperature decomposition module respectively, the lower end is communicated with the multiport valve, and the upper end is communicated with air. The online total nitrogen analyzer is small and compact in overall size, and simple in structure; the optical path design can eliminate interference of organic matters, the usage of the water sample and reagents is small, the treatment cost of the liquid waste is low, the expiration date of the reagents is long, the measurement is accurate, and the detection environment is stable.
Owner:ZHONGXING INSTR SHENZHEN

One-card and multi-meter multi-mode charging radio frequency card prepaid intelligent water meter and charging method

InactiveCN105488913AReduce management difficultyAvoid situations where you cannot closeApparatus for hiring articlesComputer moduleRadio frequency
The invention relates to a one-card and multi-meter multi-mode charging radio frequency card prepaid intelligent water meter and a charging method. The intelligent water meter comprises a valve driving circuit, a power management circuit, a display module, a read-write card module, a storage and a microprocessor; the read-write card module is used for reading a card; the microprocessor comprises an allocation module, a card information collection module, a total water consumption calculation module, a valve status monitoring module, a power judgment module, a flow collection module and a differential charging module; the allocation module is used for allocating limiting charge and charging differentials for the differential charging module; the card information collection module is used for reading and writing the recharge amount from the read-write card module; the total water consumption calculation module is used for sending a pulse signal according to a flow sensor to calculate the total dosage and sending the total dosage to the differential charging module. According to the one-card and multi-meter multi-mode charging radio frequency card prepaid intelligent water meter and the charging method, a one-card and multi-meter mode is adopted, only one user card is needed by old user transformation with multiple water meters, and the management difficulty to the users is reduced.
Owner:西安航天计量测试研究所

Light metering mode selection method and image acquisition device utilizing same

ActiveCN105578062ASuitable for exposure compensation effectsTelevision system detailsColor signal processing circuitsPoint lightComputer science
The invention provides a light metering mode selection method and an image acquisition device utilizing same. The light metering mode selection method comprises the following steps of acquiring a first exposure compensation value, a first white balance compensation value and a first focusing distance, wherein the first exposure compensation value, the first white balance compensation value and the first focusing distance correspond with a first image; determining whether a first light temperature which corresponds with the first white balance value is higher than a preset color temperature; if yes, determining a fact that an ambient brightness which corresponds with the first exposure compensation value is higher than a preset brightness; if yes, setting the light metering mode to an average light metering mode; and otherwise, setting the light metering mode to a central weight average light metering mode; if the first light temperature is not higher than the preset color temperature, determining whether the first focusing distance is larger than a preset focusing distance; if yes, setting the light metering mode to the central weight average light metering mode; and otherwise, setting the light metering mode to a point light metering mode.
Owner:ACER INC
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