939 results about "Working temperature" patented technology

The invention provides an ultrafast laser heat dissipation state real-time monitoring system based on cloud computing, and relates to the technical field of laser heat dissipation, and the system comprises a laser monitoring module which is used for transmitting ultrafast laser and is internally provided with a temperature sensor so as to monitor the working temperature of a laser in real time; the data acquisition module is used for being connected with the laser monitoring module, acquiring temperature data and key parameters, including laser power and working current, of the temperature sensor in real time, and uploading the temperature data and the key parameters to the cloud server; and the cloud analysis module is used for receiving and analyzing the temperature data and the key parameter data, identifying an abnormal temperature mode, predicting a potential overheating risk and calculating heat dissipation efficiency to obtain an analysis result. According to the invention, comprehensive, real-time and intelligent management of the heat dissipation state of the laser is realized, the operation stability and safety of the laser are effectively improved, the overheating risk is reduced, the heat dissipation efficiency is optimized, and remote monitoring and data analysis services are provided for users.

The invention discloses a low-temperature environment LNG (Liquefied Natural Gas) metering sensor drift compensation method and system, and particularly relates to the technical field of sensor drift compensation. Output data of a sensor are collected and processed, and a temperature compensation model of the sensor is established; in the working temperature range, digital filtering processing is carried out on data of displacement change of each measuring range point, and then analysis and mining are carried out; a data longitudinal interval in a temperature range is refined by using a table look-up method, so that the data interval is reduced. And calculating the G value according to the residual error obtained by the table look-up method and the numerical value change condition in each temperature section. If the G value is greater than a preset threshold value of the system, selecting a proper fitting method, such as a least square method or Legendre orthogonal polynomial fitting, according to the distribution of the G value and the data interval when curve fitting is used, so as to further optimize the temperature compensation model; and if the G value is smaller than the system preset threshold value, no subsequent operation is carried out.

The utility model provides a hydraulic safety valve, which relates to the technical field of hydraulic safety valves and comprises a hydraulic safety valve body, an oil storage chamber is arranged at the top of the hydraulic safety valve body, and a heating structure is fixedly connected to the outer side of the oil storage chamber and can heat hydraulic oil in the oil storage chamber. Through the design of the heating structure and the heat dissipation structure, the temperature sensor can detect the temperature of hydraulic oil in real time, when the temperature of the hydraulic oil in the oil storage chamber is too low, the heating structure can be started and heat the hydraulic oil, so that the hydraulic oil can be located at the optimal working temperature, and when the temperature of the hydraulic oil is too high, the heat dissipation mechanism can be started; and a heating medium and hydraulic oil in the heating structure are subjected to synchronous heat dissipation, so that the heating structure can recover to the optimal working temperature.

The invention relates to a servo-mechanism-free defocusing amount automatic compensation control system for an aerial camera, and belongs to the technical field of photoelectric instruments. According to different influences of the height, temperature and air pressure of a camera on an imaging focal plane, a temperature balance point is controlled through data calibration and temperature adjustment, the temperature balance point is slightly higher than a temperature point changing along with the height, and therefore automatic compensation of the comprehensive defocusing amount caused by the height, temperature and air pressure factors is completed. The system does not need any servo mechanism, only needs software to control the working temperature and keep the temperature balance point, can realize automatic focusing of the imaging focal plane along with the application environment, can adapt to different environmental conditions and different flight heights, and is good in thermodynamic property.

The invention belongs to the technical field of precision part machining, and discloses a precision part machining precision error compensation technology, high-precision measuring equipment comprises a laser interferometer and a coordinate measuring machine, a numerical control system calculates the compensation amount of each axis of a machine tool according to a model and carries out dynamic adjustment, and an online tool measuring system comprises a tool compensation probe. The laser interferometer carries out interference measurement through reflection of a laser beam and a machine tool measuring part so as to obtain the measurement precision, and through cooperation of the laser interferometer, the coordinate measuring machine and the cutter compensation probe, the numerical control system calculates the compensation amount of each axis of the machine tool according to a model and carries out dynamic adjustment. The laser interferometer performs interference measurement through reflection of a laser beam and a machine tool measuring part, ensures parallelism and perpendicularity, checks error changes of the machine tool at different working temperatures, detects motion errors of the machine tool at different temperatures by using the laser interferometer, and compensates the errors according to the temperature changes.

The invention relates to the technical field of heavy oil thermal recovery, in particular to a multi-element thermal fluid generator system operation control system which comprises a data acquisition module used for acquiring working parameters of a multi-element thermal fluid generator during working, and the working parameters comprise multi-element thermal fluid parameters, working pressure, working temperature, water flow, gas amount and air flow; the trend identification module is used for identifying change trends of the working parameters at different positions, selecting the change trends of the corresponding working parameters according to different types of abnormal states when the working parameters are in abnormal states, and judging fault positions and processing measures of the working parameters according to the change trends; the work adjusting module is used for acquiring the parameter proportion and the distribution quantity of the working parameters according to the fault positions of the working parameters, and setting adjusting factors of the working parameters according to the parameter proportion and the distribution quantity of the working parameters; the stability, reliability and operation efficiency of the system are improved, and the maintenance cost is reduced.

The invention discloses an outdoor display temperature control method and system, and the method comprises the steps: obtaining and analyzing the current body temperature data of an outdoor display, and setting an initial heat dissipation working condition of a heat dissipation device according to an analysis result; based on the historical meteorological data of the surrounding environment and a preset neural network model, constructing a prediction model for prediction to obtain environment temperature prediction data; analyzing the environment temperature prediction data, determining environment temperature change characteristics, and evaluating the environment temperature change based on the environment temperature change characteristics to obtain an environment temperature evaluation value; and determining a working adjustment coefficient based on the environment temperature evaluation value, and adjusting and controlling the initial heat dissipation working condition of the heat dissipation device based on the working adjustment coefficient. By combining the machine body temperature data and the environment temperature prediction data, accurate and intelligent adjustment of the working condition of the heat dissipation device is achieved, it is ensured that the outdoor displayer can keep the proper working temperature under different environment conditions, the heat dissipation efficiency of the outdoor displayer is improved, and stable operation is ensured.

The invention provides a robot welding machine, and belongs to the technical field of welding robots, the robot welding machine comprises a robot body, and further comprises a shunting heat conduction assembly and a supporting cleaning assembly; protective gas forms focused gas flow through shunting and secondary shunting, and gas flow sprayed by the cooling channel and the permeable plate is uniformly mixed under the guidance of a conical space at the front end of the nozzle, so that the concentration distribution of the protective gas above a molten pool is consistent, and the welding seam quality is improved; trace moisture in the protective gas is treated under the action of centrifugal force of the turbofan, and water vapor generated by falling and evaporation of water drops is guided to the periphery of the gas hood and cannot intrude into a molten pool area; the heat conduction cylinder rotates to enable airflow to sweep the whole surface of the contact tube, local overheating and heat dissipation dead angles are avoided, and the normal working temperature of the contact tube is guaranteed; the airflow can clean splashing particles attached to the outer side of the contact tube and the inner wall of the nozzle, the scraping arm can be tightly attached to the cleaning face in the rotating process and can abut against the contact tube, the deformation possibility of the contact tube is reduced, and the continuity and stability of the welding process are guaranteed.

The invention discloses a digital intelligent temperature control air cooling system for an engineering vehicle, relates to the technical field of intelligent temperature control, and accurately judges the specific working condition of the engineering vehicle through a working condition recognition model, so that a temperature control strategy can be customized and finely adjusted according to different working conditions; then the future temperature change trend is predicted through the working temperature prediction model, so that cooling is started or enhanced in advance, the problem of response lag of a traditional temperature control system is fundamentally solved, temperature overshoot is effectively avoided, the reliability of an engineering vehicle is improved, and the service life of parts is prolonged; and the energy consumption of accessories such as a fan is remarkably reduced through fine control, and the comprehensive benefits of improving the whole vehicle performance and reducing the maintenance cost are finally achieved.

The invention relates to the technical field of spacecraft thermal control, in particular to a heat dissipation design method and structure of a space camera electric stand machine system, electric stand machines on a space camera are grouped according to working temperatures and working modes, the electric stand machines in the same group are arranged on the same heat collection plate, and a compensation heating loop is uniformly designed on each heat collection plate; each electric single machine on the heat collection plate is always in the optimal working state, and compared with single single machine heat dissipation, thermal control resources such as a temperature measurement loop and a heating loop can be greatly saved, and the complexity of a thermal control system is reduced; the layered multi-channel heat pipe switching block is designed to conduct heat conduction on the heat collection plate heat pipe and the radiation heat dissipation plate heat pipe, and the combined heat collection plate and the layered multi-channel heat pipe switching block are used for achieving the heat dissipation design that the multi-electric-single-machine system has different working temperatures and different temperature control precision requirements.

The invention belongs to the technical field of intelligent manufacturing, and discloses a demodulator working temperature drift correction method in aviation tooling optical fiber strain measurement, which aims at strain measurement temperature drift characteristics of different temperature intervals, completes curve segmentation on the basis of temperature change rate, and further applies a proper polynomial function to perform segmentation fitting to obtain a temperature drift correction result. And the temperature drift correction model is established, so that the fitting complexity is reduced, and the temperature drift correction accuracy is improved. And the measurement precision of the fiber bragg grating strain sensor under the condition that the working temperature of the demodulator changes is ensured. The method is suitable for the strain measurement of a tool in the assembly process of aircraft components, and is also suitable for the strain measurement process of any fiber bragg grating. The method has the advantages of wide application range, simple operation, easy popularization and the like.

The invention is suitable for the technical field of laser cutting, and provides a cutting device for road and bridge steel formwork machining, which comprises bases, conveying units rotatably mounted on the inner sides of the adjacent bases, horizontal adjusting mechanisms symmetrically arranged at the top of the conveying units and abutting against steel formworks, and driving adjusting mechanisms arranged at the top ends of supporting rods. The box body is installed at the bottom of the transverse plate, a laser generator is arranged in the box body, the cooling system is arranged on the laser generator, the top end of the self-adaptive adjusting mechanism is connected with the water inlet pipe, and the bottom end of the self-adaptive adjusting mechanism is connected with the threaded pipe so that the laser generator can be adjusted according to the temperature when the laser generator works. The flow rate of cooling liquid is automatically adjusted; the cutting device is convenient to assemble and disassemble, stable in structure during cutting, high in cutting precision and capable of automatically adjusting the cooling flow so as to accurately control the working temperature of the laser generator to enable the laser generator to be in a proper environment temperature, and the utilization efficiency of cooling liquid is improved while high-efficiency operation of the laser generator is guaranteed.

The invention discloses a cabinet passive heat dissipation structure, which comprises a cabinet, the cabinet is provided with a top cover, the top cover is provided with a heat dissipation channel, the cabinet is hinged with a cabinet door, the cabinet door is provided with a plurality of air inlets, the cabinet door is provided with an assembly frame at the inner sides of the air inlets, a filter assembly is arranged in the assembly frame, the filter assembly is connected with a mounting plate, and the mounting plate is provided with a plurality of through grooves. A driving assembly is mounted in the mounting plate, and the power output end of the driving assembly is connected with a grid plate. According to the change of the environment temperature, the driving assembly drives the grid plate to work and controls the opening and closing of the air inlet of the cabinet, so that the outward opening time of the cabinet is limited, the opening amplitude is limited, the invasion of water vapor, salt mist and dust is controlled to the maximum extent under the condition that the working temperature of equipment is effectively guaranteed, and the air outlet principle is the chimney principle; air flows to form negative pressure, and hot air in the cabinet is extracted by using the negative pressure to be discharged from the heat dissipation channel, so that the outdoor cabinet achieves heat dissipation without a fan, a power supply and noise.

The utility model discloses a false scalding prevention device for cigarette cartons, and relates to the technical field of cigarette carton production. According to the technical key points, the device comprises a bottom plate, an air groove is formed in the bottom plate, a heating mechanism is arranged at the bottom of the bottom plate, an ironing plate mechanism is arranged at the bottom of the heating mechanism, the heating mechanism comprises a connecting screw rod, the lower end of the connecting screw rod is in threaded connection with a heat conduction plate, and a heating plate is fixedly installed in the center of an inner cavity of the heat conduction plate; according to the technical scheme, the temperature sensors are used for monitoring the temperature of different positions of the heat conduction plate, data are fed back to a control system, the real-time vehicle speed and the preset temperature value are combined, and the temperature of the heat conduction plate is controlled to be constant. It is ensured that the flexible ironing plate is kept in the optimal working temperature interval, the accuracy and stability of temperature control are improved, and the false ironing problem caused by inaccurate temperature control and uneven heating time of a traditional beautifying device is solved.

The invention belongs to the technical field of air source heat pump heat dissipation, and particularly relates to a low-temperature environment air source heat pump heat dissipation device which comprises a base, a heat dissipation box and a filter box are fixedly arranged on the base, a supporting net plate is fixedly arranged in the heat dissipation box, and a plurality of heat dissipation suction fans are rotationally arranged on the supporting net plate; and a driving mechanism matched with each heat dissipation suction fan is arranged on the heat dissipation box. Through intelligent power adjustment, the rotating speed of the heat dissipation suction fan is automatically adjusted according to the working temperature of the air source heat pump, heat dissipation is enhanced at the high temperature to ensure stable operation of equipment, energy consumption is reduced at the low temperature, and the energy-saving and environment-friendly requirements are met; the telescopic vibration mechanism is matched to automatically remove impurities, the equipment performance and service life are guaranteed, the maintenance cost is reduced, the intermittent control mechanism realizes automatic control of vibration of the filter screen plate, the vibration frequency can be adaptively adjusted along with the air inflow, and the operation efficiency is improved.

The invention discloses a flux-cored wire with high crack resistance and wear resistance and a preparation method of the flux-cored wire. The flux-cored wire comprises the following flux-cored raw materials in percentage by mass: 6-10% of electrolytic manganese; 28 to 34% of metal chromium; 0.5 to 1.5 percent of ferrotitanium; 1-4% of tungsten powder; 5-9% of nickel powder; 4-8% of 45 # ferrosilicon; 8 to 12% of colloidal graphene; 8-12% of molybdenum powder; and the balance of iron powder. According to the flux-cored wire, C, W, Cr, Mo and other elements are added into the flux core, the proportion of flux core powder is reasonably adjusted, and the flux-cored wire is suitable for surfacing continuous casting rollers, hot rolling rollers, shafts with the working temperature lower than 510 DEG C and sealing faces of medium-temperature and high-pressure stop valves and has the advantages of being high in heap melting speed, good in weldability, high in surface abrasion resistance, low in cost and the like. The hardness value of the steel plate can basically reach 50 HRC, and the steel plate has good crack resistance.

The invention relates to the technical field of wire cooling, in particular to a large-current liquid-cooled aluminum bar connector which comprises an aluminum bar, a cooling sleeve and an adjusting assembly. Cooling liquid enters the second cavity through the water inlet, part of the cooling liquid enters the first cavity through the first opening, part of the cooling liquid directly flows to the water outlet, the cooling liquid entering the first cavity effectively cools the aluminum row wire, and the cooling liquid is discharged out of the first cavity from the second opening after effectively cooling the aluminum row wire. The detection part detects the temperature of the cooling liquid after the aluminum row is cooled, the detection part can also detect the temperature of the cooling liquid entering the second cavity, and the control part can control the degree of blocking the first opening by the blocking part according to related data of the detection part, so that the amount of the cooling liquid entering the first cavity is controlled. And the cooling liquid is reasonably used for cooling the aluminum row, so that a plurality of aluminum row wires are ensured to be in a normal working temperature range, and further resource waste is avoided.

The invention relates to the technical field of duplexers, and discloses a duplexer temperature compensation parameter automatic adjusting method and device. The method comprises the following steps: performing working temperature sampling on a duplexer to obtain temperature sampling data, and performing distribution feature extraction on the temperature sampling data to obtain temperature feature data; inputting the temperature feature data into a mechanism information neural network for feature reconstruction to obtain temperature compensation features; performing radial basis function neural network mapping on the temperature compensation characteristics to obtain a duplexer frequency drift state quantity; performing sliding window adaptive Kalman filtering operation on the frequency drift state quantity of the duplexer to obtain a compensation parameter; the compensation parameters are input into a feedforward compensation controller, a voltage-controlled resonator of the duplexer is adjusted through a sliding mode control structure, a frequency compensation signal is obtained, and stable compensation of the frequency of the duplexer is achieved.

The utility model relates to the field of vacuum pumps, in particular to a vacuum pump with a cold air heat dissipation effect, which comprises a case, a pump body and a driving part, the pump body is mounted in the case through a support frame, an inner cavity is formed in the pump body, a controller is connected to the side surface of the case, a cooling oil tank communicated with the pump body is arranged in the case, a fan is connected to the support frame, and the fan is connected to the driving part. The fan is connected with an air flow conveying pipeline, the pump body is connected with an air inlet valve which is communicated with an inner cavity of the pump body, and one tail end of the air flow conveying pipeline is connected with the air inlet valve in a matching way. And the working temperature in the pump body is effectively reduced, so that the heat dissipation effect of the vacuum pump is further improved by combining cold air heat dissipation and cooling liquid heat dissipation of the cooling oil tank, and the heat dissipation effect and the working efficiency of the vacuum pump are enhanced.

The embodiment of the invention provides a temperature compensation model method, a determination method, equipment and a camera, and the method comprises the steps: obtaining the calibration internal reference values of a TOF camera at a plurality of first test temperatures, determining a first temperature compensation model of the TOF camera according to the plurality of first test temperatures and the plurality of calibration internal reference values, the first temperature compensation model is used for determining an internal reference temperature compensation value corresponding to the working temperature according to the working temperature of the TOF camera. According to the method provided by the embodiment of the invention, the calibration internal reference values of the internal reference (focal length, optical center, distortion and the like) of the TOF camera at different temperatures are acquired, the rule of the internal reference changing along with the temperature is analyzed, and the temperature compensation model is generated based on the rule to perform temperature compensation on the internal reference of the camera, so that the precision of the internal reference of the camera is ensured, the temperature adaptation range of the TOF camera is expanded, and the application range of the TOF camera is expanded. The use flexibility is improved, and the problem of low efficiency of recalibration aiming at different working temperatures is solved.

The invention relates to the technical field of compressor temperature control, and discloses a compressor temperature control system capable of preventing generation of condensate water, which comprises a sensing module, an execution module and a controller. The sensing module is used for collecting air temperature, relative humidity, system working pressure and circulating oil temperature parameters of the compressor in real time. The controller is configured to calculate the current pressure dew point of the system based on the air temperature, the relative humidity and the working pressure of the system; the pressure dew point serves as a floating lower limit, a preset system optimal working temperature upper limit serves as a fixed upper limit, and a dynamic safe working interval is determined; finally, a cooling unit and a heating unit in the execution module are cooperatively controlled to work according to the relation between the circulating oil temperature and the dynamic safety working interval. By establishing the dynamic safety lower limit changing along with the working condition, the problem that the compressor is prone to generating condensate water under the high-humidity or low-load working condition to cause oil emulsification is effectively solved, and accurate and energy-saving temperature control is achieved.

The invention discloses a manufacturing and self-heating riveting method of a thermoplastic composite material and metal mixed structure rivet. According to the method, firstly, a thermoplastic composite material and metal mixed rivet is designed, and a process and mold design for preparing the metal and thermoplastic composite material mixed structure rivet through a two-step mold pressing method are provided. The added metal in the prepared rivet has high electromagnetic induction heating capacity, and in the riveting process, the rivet is heated to the working temperature through induction current and then pressed to complete press riveting connection. By means of the technology, the weight of the metal rivet can be obviously reduced, rapid self-heating riveting can be achieved, in addition, composite material hole edge damage possibly caused by machining can be filled through heating and melting of the thermoplastic composite material, meanwhile, abrasion and electrochemical corrosion between the rivet and a plate are avoided, and the service life of the rivet is prolonged. And the sealing performance and the shock and vibration resistance of the riveted joint are improved. In addition, after riveting is completed, reliable pier heads formed at the two ends of the rivet improve the connecting strength and reliability, and the rivet is suitable for complex working conditions.

The invention relates to the technical field of medical cold chain transportation, in particular to a portable intelligent medical refrigerated transport box suitable for an extreme temperature environment, which comprises a box body, a heat insulation layer is arranged on the inner wall of the box body, and the box body is provided with a storage cabin and an electrical element mounting cabin. An energy supply module, an integrated information processing module and a temperature control system are mounted in the electrical element mounting cabin; an information display and control panel is arranged on the side wall of the box body; the integrated information processing module is used for collecting temperature data in the storage cabin and position information of the medical refrigerated transport box; the temperature control system is used for regulating and controlling the temperature in the storage cabin; according to the invention, the working temperature range is effectively expanded, the extreme temperature adaptability is effectively improved, and 99% of extreme climate regions in the world can be covered; the semiconductor refrigeration / heating cooperative control is combined with the precise regulation and control of the data processing module, so that the quick response to the temperature change in the box is realized, the response time is greatly shortened, the temperature fluctuation is reduced, and the activity and quality of medical supplies can be better guaranteed.

The invention provides a prediction method based on the wear state of a steel-based ceramic wear-resistant component, and relates to the technical field of material life evaluation, and the prediction method comprises the following steps: transmitting an excitation eddy current containing a first frequency and a second frequency to a steel substrate, and receiving a response signal modulated by the state of a steel substrate and ceramic-steel bonding interface; processing the response signals corresponding to the first frequency and the second frequency, and extracting a first phase variation of the first frequency relative to a first reference signal corresponding to the initial health state of the component and a second phase variation of a second reference signal corresponding to the second frequency; the difference quantity between the first phase change quantity and the second phase change quantity is calculated, and the heat conduction state change of the ceramic-steel bonding interface is represented; and acquiring the real-time working temperature of the wear-resistant part, evaluating the current state grade of the ceramic-steel bonding interface based on the real-time working temperature and the difference quantity, and predicting the residual safe service time of the ceramic wear-resistant layer in combination with the change trend of the difference quantity along with time.

The invention discloses a heating alarm test control system for an inertial device, and the system is provided with a temperature detection circuit which is used for carrying out the real-time detection of the working environment temperature in the performance test process of the inertial device, and transmits a temperature signal detected by the temperature detection circuit to a heating alarm mode switching circuit. According to the temperature condition of the inertial device, the heating and heating alarm mode switching circuit utilizes different heating power supplies to carry out rapid heating or constant temperature control on a heating sheet so as to change the working temperature of the inertial device, and when the working temperature of the inertial device is too high, the heating and heating alarm mode switching circuit can also send out a high-temperature alarm signal. And meanwhile, the connection between the heating sheet and the heating power supply is cut off in time, so that the inertial device cannot work in an abnormal high-temperature state even if the temperature control module breaks down, the protection of the inertial device is not influenced by the fault of the temperature control module, the service life of the inertial device is ensured, and the safety of the inertial device performance test system is also improved.

The present invention relates to the field of integrated circuit technology, and in particular to a lead frame with an inductive self-lowering base island. The lead frame comprises a lead frame body, the top of which is provided with an upper protective mechanism; the bottom of which is provided with a lower protective mechanism. When the chip of the lead frame of the present invention is working, the internal temperature rises, and the elastic support sheet and the deformable support sheet expand due to heat. Since the expansion coefficient of the elastic support sheet is greater than the expansion coefficient of the deformable support sheet, the elongation of the elastic support sheet is large, and the deformable support sheet is located at the bottom of a section of the parabolic elastic support sheet away from the base island, the section of the elastic support sheet away from the base island will bend downward, thereby driving the base island to descend, avoiding the concentration of thermal stress on the chip, so that the lead frame can sense the self-lowering base island when the working temperature rises, and automatically reset the base island when the working temperature drops, thereby improving the working stability and the environmental adaptability.

The present invention provides a high-voltage inverter temperature anomaly warning system and method, which relates to the field of electronic technology, including: an edge data collector, which is used to continuously collect and monitor the working temperature of a high-voltage inverter and the ambient temperature of the environment in which it is located, and upload them to a cloud-based remote intelligent operation and maintenance platform; the cloud-based remote intelligent operation and maintenance platform reads all the working temperatures and the ambient temperatures of the day at preset time intervals, and processes them to obtain a temperature rise value, and saves the temperature rise value; the cloud-based remote intelligent operation and maintenance platform reads each of the temperature rise values ​​of a preset number of days before the day and processes them to obtain an average temperature rise value, and each time the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold and continues for a preset number of times, a temperature anomaly warning signal is generated and sent to the corresponding mobile terminal; the beneficial effect is to give users sufficient time to carry out corresponding processing, prevent unplanned shutdowns of production enterprises, and reduce user losses.

The invention discloses a hair straightener temperature accurate control method and device based on power regulation, and relates to the technical field of temperature control. After the heating plate detects the switch instruction, the heating plate is heated to the preset working temperature at the preset working power; working residual temperature of the heating plate in the service cycle is obtained, a temperature decline curve is obtained according to fitting of the preset working temperature and the working residual temperature, and the curve slope of the temperature decline curve is determined; determining the hair quality of the user according to the curve slope after the first period, and adjusting the working power of the hair straightener according to the hair quality of the user; the temperature is automatically adjusted according to the hair quality of the user, and the problem that the user experience is reduced due to manual adjustment is solved. By intelligently detecting the working residual temperature of the heating plate and fitting the temperature drop curve, the hair quality of the user is automatically judged, and then the working power of the hair straightener is adaptively adjusted, so that the personalized and intelligent heating experience is realized, and the use convenience and satisfaction of the user are greatly improved.

The invention relates to the technical field of special engineering environment control, and discloses a large-aperture telescope dome cover internal thermal control system, which comprises a dome air conditioner thermal control system and a dome emergency exhaust system, and is characterized in that the dome air conditioner thermal control system has variable-temperature cooling and preset low-environment-temperature cooling functions; the thermal environment adjusting module is used for adjusting the thermal environment in the dome cover based on preset thermal control requirements; the dome emergency exhaust system is used for conducting rapid cooling adjustment when the adjusting effect of the dome air conditioner thermal control system cannot meet the preset thermal control requirement. According to the dome air conditioner thermal control system, the cooling mode can be flexibly adjusted according to different environment temperatures and observation requirements, the dome emergency exhaust system serves as a standby scheme, and when the air conditioner thermal control system cannot meet the thermal control requirement, rapid starting and rapid cooling adjustment can be conducted. The emergency mechanism ensures that the telescope can still quickly reach the preset working temperature under extreme weather or emergency conditions, and is beneficial to improving the observation benefit of the telescope.

The invention discloses a low-temperature environment LNG (Liquefied Natural Gas) metering sensor drift compensation method and system, and particularly relates to the technical field of sensor drift compensation. Output data of a sensor are collected and processed, and a temperature compensation model of the sensor is established; in the working temperature range, digital filtering processing is carried out on data of displacement change of each measuring range point, and then analysis and mining are carried out; a data longitudinal interval in a temperature range is refined by using a table look-up method, so that the data interval is reduced. And calculating the G value according to the residual error obtained by the table look-up method and the numerical value change condition in each temperature section. If the G value is greater than a preset threshold value of the system, selecting a proper fitting method, such as a least square method or Legendre orthogonal polynomial fitting, according to the distribution of the G value and the data interval when curve fitting is used, so as to further optimize the temperature compensation model; and if the G value is smaller than the system preset threshold value, no subsequent operation is carried out.