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213 results about "Temperature function" patented technology

Cable-joint cable core temperature inversion method and system on basis of surface temperature of cable

The invention provides a cable-joint cable core temperature inversion method and a cable-joint cable core temperature inversion system on the basis of a surface temperature of a cable. The cable-joint cable core temperature inversion method comprises the following steps: S1, carrying out radial temperature inversion according to a cable one-dimensional transient thermal circuit model and a temperature of a surface temperature measured point of a cable body so as to obtain an inversion transient temperature of a cable core fit point; S2, constructing a cable two-dimensional temperature field simulation module by adopting a finite element temperature field simulation method and simulating transient temperatures of a cable core contact point and the cable core fit point under different loading currents and at different moments so as to obtain a transient temperature simulated data set; S3, using the transient temperature of the cable core contact point as an independent variable, using the transient temperature of the cable core fit point as a dependent variable and carrying out fitting on the transient temperature simulated data set so as to obtain a cable core axial temperature function; S4, combining the inversion transient temperature of the cable core fit point with the cable core axial temperature function to obtain a temperature of the cable core contact point. According to the invention, the accurate temperature of the cable core contact point can be obtained by utilizing the surface temperature of the cable body through inversion and fitting; the cable-joint cable core temperature inversion method and the cable-joint cable core temperature inversion system are simple, convenient and rapid.
Owner:WUHAN UNIV

All-optical-fiber current transformer system with temperature measurement function

The invention provides an all-optical-fiber current transformer system with a temperature measurement function. The all-optical-fiber current transformer system comprises a current sensing optical path and a temperature sensing optical path, the current sensing optical path comprises a laser device, an optical fiber coupler, an optical fiber circulator, an optical fiber polarizer, a phase modulator, an optical fiber delay ring, a current transformer sensing ring and a first photoelectric detector in sequence connection, and the first photoelectric detector is connected with an end D3 of the optical fiber circulator. The temperature sensing optical path comprises a laser device, an optical fiber coupler, an optical fiber temperature sensor and an optical comb shaped filter in sequence connection, and the optical comb shaped filter is connected with an end C of the optical fiber coupler. The all-optical-fiber current transformer system has the advantages that the temperature sensing optical path is added, current and temperature measurement functions are integrated, temperature compensation can be performed for the current transformer sensing ring, a corrected current value serves as a judgment basis of relay protection, the optical fiber temperature sensor and the current transformer sensing ring can jointly participate in relay protection, and accordingly accuracy of relay protection judgment is improved.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Air conditioner control system based on dynamic heat comfort and control method thereof

The invention provides an air conditioner control system based on dynamic heat comfort. The air conditioner control system based on dynamic heat comfort comprises an intelligent air speed regulation module, a intelligent temperature regulation module, a manual regulation module and a memory module. The air conditioner control system based on dynamic heat comfort is characterized in that the intelligent air speed regulation module comprises an instantaneous air speed function of a PMV of a target area in a [-0.5,+0.5] interval according to dynamic changes of the air speed, the intelligent temperature regulation module comprises an instantaneous temperature function of the PMV of the target area in the [-0.5,+0.5] interval, and the instantaneous air speed function and the instantaneous temperature function of the target area are in linkage control; the intelligent air speed regulation module is used for controlling and regulating the air supplying speed according to the set air speed function of the target area; the intelligent temperature regulation module is used for controlling and regulating the air supplying temperature according to the set temperature function of the target area; the manual regulation module is used for regulating and controlling the indoor temperature; the memory module serves as a device for memorizing the last-time using state of an air conditioner.
Owner:XIANGTAN UNIV

Method for acquiring thermal radiation noise of gradient temperature gas medium in infrared imaging guidance

The invention discloses a method for acquiring thermal radiation noise of a gradient temperature gas medium in infrared imaging guidance, comprising the following steps of: 1, establishing a finite-element analysis environment for a discrete medium; 2, carrying out ray tracing and searching an LOS (Line Of Sight) path; 3, acquiring thermal radiation intensity of a spectral band through iteration by adopting a discrete transfer method; and 4, acquiring the thermal radiation noise. The method for acquiring the thermal radiation noise, disclosed by the invention, and can overcome the dependence of radiation energy on space direction and ensure that the high-temperature gas radiation problem for a specific research purpose can be numerically solved; the introduced LOS path is an effective integral path for calculating the thermal radiation effect of the gradient and temperature medium, which forms disturbance to infrared imaging; a ray trace equation and a radiation trace equation, including temperature functions, are realized through developing an accurate ray tracing model based on a CFD (Computational Fluid Dynamics) grid in the temperature gradient field; and the method for acquiring the thermal radiation effect of a high-temperature gas can be obtained by utilizing the radiation discrete transfer method.
Owner:BEIHANG UNIV

Electric chafing dish with constant temperature function and constant temperature control method of the electric chafing dish

The invention discloses an electric chafing dish (ECD) with a constant temperature function and a method for controlling the temperature to be constant. A heating unit, a signal collecting unit and a signal processing unit are arranged in the electric chafing dish. The signal collecting unit comprises an ECD-temperature detecting circuit used for detecting the temperature of the ECD bottom and a constant temperature detecting circuit used for detecting the set value of the constant temperature; the ECD-temperature detecting circuit clings to and is arranged in the ECD bottom; the signal processing unit receives a voltage signal which represents the temperature and is output by the ECD-temperature detecting circuit and the constant temperature detecting circuit; the signal processing unit is preset with a temperature difference set value; by judging whether the absolute value of the difference between the temperature of the ECD bottom and the temperature of the set value of the constant temperature is larger than the set value of the temperature difference, a control signal is transmitted to the heating unit by the signal processing unit to control the on-off of the electricity of the heating unit, so as to maintain the temperature of the ECD-bottom within the range of the plus and minus set value of the temperature difference of the set value of the constant temperature and prevent the ECD from boiling frequently and save electrical resource at the same time.
Owner:NINGBO UNIV

Method for producing transparent high-temperature electric heating membrane pipe with self-constant temperature

The invention relates to a method for producing a self constant-temperature transparent high-temperature electric heating membrane tube. The method is characterized in that a tubular metallic-membrane plating workpiece is cleaned and dried, a magnesia sizing agent is coated on the non-metallic-membrane plating area and is dried as well as is fixed on a clamp of a metallic-membrane plating device and is put inside a furnace cavity of the metallic-membrane plating device, the workpiece is coated by a spraying device and the surface of the workpiece is plated with a transparent high-temperature electric heating membrane and is cooled to the normal temperature, the workpiece is cleaned by ultrasound to remove the magnesia coating of the non-metallic-membrane plating area and is dried, the silver paste is printed on the workpiece by a screen printer to manufacture the electrode, the drying process is performed, and the workpiece is dried naturally to the normal temperature to manufacture the finished product of the self constant-temperature transparent high-temperature electric heating membrane tube. The method has the advantages that the thickness of the metallic-membrane plating is even, the plating time is short, the positive temperature coefficient is formed, the self constant temperature function is realized, the service life is long, the stability is good and the security and the effect are good.
Owner:佛山康疆电器科技有限公司

Auxiliary instrument panel of saloon car

The invention relates to an auxiliary instrument panel of a saloon car. The instrument panel comprises an auxiliary instrument panel box body; the upper part of the auxiliary instrument panel box bodyis provided with a turnover display screen, a mobile phone wireless charging device, an umbrella drying device, a water cup placing cabinet and a storage box; the front part of the box body is provided with an object drawer, a cooling and heating air inlet pipe and a heating air inlet pipe; the rear part of the box body is provided with a constant-temperature cabinet, an air outlet controlling panel and a cooling and heating air exhaust pipe; and the left side and the right side of the box body are provided with lifting and retracting grooves and boss table boards. According to the auxiliaryinstrument panel of the saloon car, turning over of the display screen, wireless charging of a mobile phone, drying of an umbrella, lifting and retracting of the grooves and the boss table boards andthe constant-temperature function of drinks can be conveniently realized, the operation is convenient, the space in a saloon car keeps clean and tide, the practical functions of an auxiliary instrument panel are increased, the occupation of the space in the saloon car is effectively reduced, and the utilization rate of the space in the saloon car is improved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Fire-extinguishing system special for wind driven generator cabin

The invention discloses a fire-extinguishing system special for a wind driven generator cabin. The system comprises a gas fire-extinguishing system, a wind driven generator cabin tuyere emergency closing system and an information and control system; the gas fire-extinguishing system comprises a fire-fighting nozzle and a temperature controlled fire-extinguishing agent heat preservation storage device; the wind driven generator cabin tuyere emergency closing system comprises a filling device, a soft capsule communicated with the filling device through a filling pipeline and a control device for controlling opening and closing of the filling device; and the information and control system comprises a wind driven generator cabin field controller and a remote after-sale service system. The system integrates fire detection, automatic start, automatic release, information acquisition and feedback, has an automatic constant temperature function, is accurate and quick in response, low in false alarm rate, convenient to arrange and reliable in structure, completely does not depend on power for starting, can effectively adapt to the severe working environment of a wind driven generator unit, and can quickly realize automatic fire extinguishment and reduce the loss to minimum once a fire happens in the generator cabin.
Owner:VITALONG FIRE SAFETY GRP

Method for predicting temperature distribution of semiconductor device

The invention discloses a method for predicting temperature distribution of a semiconductor device, and relates to the technical field of integrated circuit analysis. The method comprises the main steps of (1) acquiring model parameters of the active device from a chip, (2) establishing a model of the device in COMSOL, and conducting finite element temperature analysis on the model, (3) conducting function fitting on the temperature distribution of the device in MATLAB, and (4) substituting the power consumption, the area of a heating zone, the ambient temperature and other arguments of the actual active device into a temperature function expression formula, and obtaining the temperature distribution of the device. The method for predicting temperature distribution of a semiconductor device can be widely applied to the field of integrated circuit analysis, and compared with the traditional finite element analysis method, the method for predicting temperature distribution of a semiconductor device has the advantages of omitting the processes of entity model establishment and mesh generation and saving plenty of computer hardware resources and calculation time, and the method for predicting temperature distribution of a semiconductor device can achieve the temperature analysis of the semiconductor device simply, quickly and efficiently.
Owner:XIDIAN UNIV

Optimal charging current estimation method based on neural network model

The invention discloses an optimal charging current estimation method based on a neural network model. The optimal charging current estimation method comprises the steps of: (1) acquiring a neural network thermal model; (2) configuring a charging current range according to the model of a vehicle to be charged, wherein the upper bound of the charging current range is the maximum charging current, and the lower bound of the charging current range is the minimum charging current; (3) configuring parameters of an evaluation function, wherein the parameters of the evaluation function include allowable longest charging time, allowable shortest charging time, allowable maximum temperature, allowable minimum temperature, an evaluation weight of a temperature function and an evaluation weight of a time function; (4) and acquiring an optimal current according to the charging current range, the parameters of the evaluation function and the neural network thermal model, and regarding the optimal current as an initial charging current. The optimal charging current estimation method is high in adaptivity and flexible, can adapt to charging initial states of different battery packs, can estimate the optimal charging current in the current state, and ensures that the situations of overlong charging time and overhigh charging temperature cannot occur.
Owner:OPTIMUM BATTERY CO LTD

Low power consumption control method and clock system of satellite time service clock system

The present invention relates to a low power consumption control method and clock system of a satellite time service clock system. The method comprises the following steps: (1) the clock system compensates the travel time power according to the preset crystal frequency / temperature function relationship to compensate the time difference caused by the temperature change of the clock, thereby improving the travel time accuracy; (2) the satellite receiving module receives and decodes the obtained satellite standard time; (3) according to the satellite standard time, the clock time is synchronized, the time difference between the time clock and the satellite standard time is measured, and the frequency accuracy of the clock crystal is calculated; (4) according to the frequency accuracy of the crystal, the preset crystal frequency / temperature function relationship is corrected, to compensate for the aging frequency of the crystal to keep travel time accuracy; (5) according to the frequency accuracy of the crystal, the cycle of receiving the satellite standard time is adjusted. The invention can reduce the time and frequency of receiving the satellite signal as much as possible, reduce the power consumption of the clock system, and keep the clock with high-precision travel time.
Owner:CHENGDUSCEON ELECTRONICS

Fan speed adjustment system and method

The invention provides a fan speed adjustment system and method. The system comprises a sampling module, a creating module, an acquisition module, a calculation module and an adjustment module, wherein when a temperature sensor is normal, the CPU usage rate, the temperature value and the fan speed value are sampled; a usage rate function, a temperature function and a speed function are created according to the sampled usage rate, the temperature value and the speed value; the creating module further creates a first function between the temperature value and the speed value according to the temperature function and the speed function; the creating module further creates a second function between the usage rate and the temperature value according to the usage rate function and the temperature function; the creating module further creates a third function between the usage rate and the speed value according to the first function and the second function; the acquisition module acquires the CPU usage rate in real time; the calculation module calculates a corresponding fan speed value according to the usage rate acquired in real time and the third function; the adjustment module adjusts the current fan speed into a speed value obtained by calculation. According to the fan speed adjustment system and method, the fan speed can be adjusted normally under the condition that the temperature sensor is damaged.
Owner:天长市万科电器配件厂

Method for designing wind and solar hybrid system

The invention relates to the new energy technology and the wind and solar hybrid power generation system, in particular to a method for designing a wind and solar hybrid system. The method includes the following steps of firstly, measuring energy consumption data of support loads of a place where the wind and solar hybrid system is located; secondly, obtaining a sunlight intensity function S(t), a temperature function T(t) and a wind velocity function vw(t) within the time period [0,T] by conducting statistics on solar radiation intensity data, temperature data and wind power data of the place where the wind and solar hybrid system is located; thirdly, obtaining an energy consumption mean value and an energy consumption rate mue of load subsystems within the time period [0,T] according to the energy consumption data of supporting loads of the place where the wind and solar hybrid system is located and sunlight intensity function S(t) and the temperature function T(t) of the place where the wind and solar hybrid system is located, wherein T takes one day as a unit. The method is reasonable in design, and required cost of the optimized wind and solar hybrid system is determined on the premise that the energy outage probability poutage and the wind / solar discard probability pdiscard are lowered and it is ensured that a battery pack works in the optimal low-charging and low-discharging working state.
Owner:山西绿色光电产业科学技术研究院(有限公司)
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