267 results about "Dew point" patented technology

The invention relates to the field of grain storage management, and discloses an intelligent granary grain pile dew point early warning method and system, and the method comprises the steps: carrying out the continuous collection of the temperature and humidity, airflow velocity and pile density of each grain pile in a granary, and generating a humidity and heat perception graph reflecting the spatial layering characteristics; performing time sliding and spatial reconstruction analysis on the damp-heat perception graph, and constructing a damp-heat evolution mapping model; based on the damp and hot evolution mapping model, calling a multi-dimensional risk identification engine to perform aggregation judgment on the micro-region with the dew point close to a critical value, and outputting a potential condensation risk set; performing joint correction on the potential condensation risk set, real-time airflow distribution, grain pile accumulation form and ventilation response delay characteristics, and performing dynamic weight regression on different grain varieties and seasonal factors to generate dynamic stability indexes reflecting risk migration and diffusion trends; and adaptively adjusting the sensing sampling density and the early warning judgment threshold according to the dynamic stability index. The method has the advantage of improving the early warning precision of storage environment management.

The invention discloses a condensation-free efficient heat exchange control method and system for a full-premixing water heater, and the method comprises the steps: collecting the multi-source information, such as air inlet temperature, humidity, gas flow, flue gas oxygen concentration and wall temperature, in real time, calculating a predicted dew point based on a dynamic dew point prediction model, and setting a dynamic safety boundary; the condensation risk is judged by comparing the wall temperature with the safety boundary, and active intervention is carried out in a staged cooperation mode that fuel gas and air volume are continuously adjusted firstly and then a partial combustion zone sectioning valve is rapidly turned off; the system comprises a main controller, a mesh-shaped infrared radiation burner, a sectional valve assembly, a gas proportional valve, a frequency conversion fan and related sensors. According to the invention, the system runs close to the condensation boundary through intelligent control, and the advantage of high operation heat efficiency is realized on the premise of ensuring high reliability.

The invention relates to the technical field of dew point measurement, in particular to an intelligent temperature control system and method based on a high-precision chilled mirror dew point meter, and the system comprises a chilled mirror temperature difference positioning module, a main signal selection module, a power response matching module, an interference airflow recognition module, and a current output instruction generation module. A cold mirror end temperature difference is obtained, a section and a lifting direction are judged, synchronous measuring points are screened, a minimum deviation signal is extracted, a power section is matched, a power-on instruction is constructed, a rheumatism disturbance level is identified, parameters are spliced to generate a conduction structure, and a cold mirror temperature control instruction is output. According to the method, section identifiers are constructed through temperature differences and temperature change directions, signals are screened based on time alignment, interference is avoided, power control positions section deviation directions through difference values, disturbance identification is combined with wind speed and humidity differences, disturbance levels are refined, power-on control generates time sequence instructions through multi-parameter splicing, instruction stability and control accuracy are improved, and the method is suitable for large-scale popularization and application. And dynamic closing logic is formed.

The invention provides a water vapor interference resistant sensor air chamber and a dynamic dehumidification method thereof.The sensor air chamber is characterized in that an acquisition control module, a temperature acquisition assembly and a heating and heat preservation assembly are arranged in an air chamber structure assembly, and the acquisition control module is connected with the temperature acquisition assembly and the heating and heat preservation assembly; the heating and heat preservation assembly is arranged on the outer side of the sensor, the collection control module carries out data processing and regulation and control parameter calculation, and precise moisture-proof control is achieved. Meanwhile, the invention discloses a dynamic dehumidification method. In combination with the change of sensor signals and the moisture condensation temperature under different temperature conditions, the heating and heat preservation assembly is started to heat the air chamber, so that the temperature of the air chamber is always higher than the dew point temperature and is fixed as the temperature difference value of the air chamber temperature and the environment temperature, and the moisture is effectively prevented from condensing in the air chamber or interfering a detection signal; the problem that the sensor is prone to false alarm in the humid environment is solved, data are stable and reliable in the humid environment, and detection precision and stability are improved.

The invention provides a storage system for immunofluorescence slide glass and an intelligent temperature and humidity coupling control method thereof. The system comprises a closed sample cabin, a controller, a passive buffer layer and other structures, and the temperature and humidity in the cabin can be stably controlled in a dynamic environment. The temperature and humidity in the cabin and the temperature of the key cold surface are monitored in real time through the sensing unit, the local dew point is calculated, and temperature and humidity control is executed. And the controller executes a layered gradient coupling control algorithm according to the dynamic dew point safety margin to ensure accurate control of temperature and humidity. The passive buffer layer is of a composite structure of a phase change material and a moisture absorption material, and the temperature and humidity are adjusted through solid-liquid phase change and molecular adsorption. The system can effectively improve the storage stability and safety of the immunofluorescence slide, and is suitable for sample storage management in industries such as life science and biological pharmacy.

The invention relates to a variable dew point control method of an all-air air conditioning system, belongs to the technical field of heating ventilation air conditioners, and solves the technical problems of temperature and humidity coupling in the prior art and difficulty in landing of a chilled water temperature resetting technology. The control method comprises the steps of S1, parameter initialization, S2, system starting and stabilizing, S3, air supply dew point dynamic adjustment and cold water valve control, S4, temperature and air supply amount control and S5, fresh air optimization and air valve control. The water supply temperature is adjusted by dynamically adjusting the air supply dew point and dynamically increasing the temperature of the outlet of the surface air cooler, the energy efficiency of the unit is remarkably improved, and the system is suitable for the chilled water temperature resetting technology and compatible with the application of the medium-temperature water supply technology.

The invention relates to the technical field of clean room environment control, and discloses a clean room environment control compensation method and system based on temperature and humidity independent combined control, and the method comprises the steps: collecting the infrared thermal imaging data of a clean room; infrared thermal imaging data of the clean room are processed into surface heat flux distribution through three-dimensional space interpolation reconstruction; detecting the air dew-point temperature and the particulate matter concentration of the clean room, and combining the air dew-point temperature and the particulate matter concentration into a dynamic heat and humidity load vector; determining a target temperature value and a target humidity value of the clean room; a first control instruction for a temperature adjusting device of the clean room is generated, and a second control instruction for a humidity adjusting device of the clean room is generated; controlling the temperature adjusting device to adjust the temperature of the clean room according to the first control instruction, and controlling the humidity adjusting device to adjust the humidity of the clean room according to the second control instruction. Through organic combination of multi-source sensing, dynamic modeling and decoupling control, the precision, adaptability, safety and energy efficiency level of clean room environment control are remarkably improved.

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 relates to the technical field of machine room environment regulation and control, in particular to a communication base station intelligent energy-saving window control design method and system, and the method comprises the steps: obtaining and classifying base station source load data, setting energy-saving window parameters and an off-network strategy, monitoring a power supply state, and cooperatively controlling temperature control equipment in combination with electric quantity temperature difference. According to the method, the thermodynamic state is digitalized by calculating the outdoor cold source potential energy gradient and the indoor thermal load cumulative acceleration and combining the enthalpy difference allowance so as to accurately evaluate the natural cold source potential; the optimal ventilation opening degree and the fan rotating speed are matched through multi-dimensional feature clustering, so that the condensation risk is strictly restrained according to dew point approximation deviation while the heat dissipation efficiency is guaranteed, and in addition, a dual-target evaluation function in an off-grid scene is constructed to solve a non-dominated solution set of endurance time and thermal safety. A dynamic protection threshold value is generated; and when the commercial power is interrupted, a control strategy is adaptively adjusted according to the real-time load and the environment temperature, so that the off-network life cycle of the base station is maximized, and core equipment is ensured to always run within a safe temperature boundary.

A device cooling system includes a vehicle-mounted device, a main controller, and a valve set. A liquid inlet pipe and a liquid outlet pipe are disposed on the vehicle-mounted device, the liquid inlet pipe is connected to the valve set, the valve set is connected to an electric drive liquid-cooling loop to form a first path, the valve set is connected to a battery liquid-cooling loop to form a second path, and the valve set is configured to switch a switch status to control to connect the first path or the second path. A temperature and humidity detection apparatus is disposed in the vehicle-mounted device. The main controller is configured to: obtain a dew point temperature based on a temperature and humidity that are detected by the temperature and humidity detection apparatus, and control, based on the dew point temperature, the valve set to switch the switch status.

The invention discloses a radiation air conditioner heat and humidity decoupling cooperative control method based on dynamic dew point prediction, and the method comprises the steps: building a multi-dimensional environment state sensing system, collecting indoor environment parameters in real time, including indoor temperature and humidity and capillary network water supply temperature, calculating indoor air dew point temperature and moisture content change rate, and forming a dynamic anti-condensation safety margin. And the minimum water supply temperature constraint allowed by the capillary radiation system is generated. Based on the constraint, the system achieves sensible heat and latent heat decoupling of indoor cold loads, sensible heat loads are preferentially borne by the capillary radiation system, wet load disturbance of latent heat loads is eliminated by the fresh air system through feedback compound control, and stable adjustment of indoor temperature and humidity is achieved. And under the working condition of insufficient sensible heat, the system automatically performs self-adaptive redistribution of sensible heat load, and the fresh air system assists in supplementing cold energy, so that comfort and high-energy-efficiency operation are ensured to be maintained within an anti-condensation safety boundary. According to the method, indoor air condensation can be effectively prevented, cooperative operation of the capillary radiation system and the fresh air system is optimized, and accurate heat and humidity control is achieved.

The invention discloses an air conditioner filter screen cleaning prompting method based on artificial intelligence, and relates to the technical field of intelligent maintenance of air conditioners and heating ventilation air conditioning equipment. Systematic interference of high humidity and accumulated water of a pressure taking channel on pressure difference reading is eliminated on the sensing level by introducing a dew point driven condensation risk grading and feature weight descending mechanism; the pressure difference indication is closer to the real resistance evolution; then, differential pressure, fan electric parameters and indoor and outdoor temperature and humidity are comprehensively utilized through multi-time-window preprocessing and a time sequence classification model, distinguishing of a dry dust blocking mode and a wet mold blocking mode is achieved, and the complex process of slow accumulation-intermittent fluctuation-seasonal migration in a coastal scene can be covered; and a hysteresis and anti-shake strategy is adopted in a decision-making level, and a minimum prompt interval is set, so that false alarm and frequent reminding caused by transient disturbance are inhibited, and the user experience is remarkably improved.

The invention discloses a heating control method for an engine gas delivery pipeline of a marine gas generator set, which relates to the technical field of marine gas power systems, and comprises the following steps: collecting multi-dimensional environment state information of the gas delivery pipeline in real time, analyzing gas components and pressure fluctuation data, and calculating the temperature of the gas delivery pipeline; a theoretical dew point temperature and a potential paraffin precipitation temperature under real-time pressure are calculated by combining a fuel gas physical property database, a real-time heat exchange model is constructed by combining a pipeline outer wall temperature gradient and a cabin environment temperature, theoretical temperature attenuation curves of different positions of fuel gas in a pipeline are obtained, condensation and paraffin precipitation risk positions and degrees are predicted after comparison, and a real-time heat exchange model is established. And differential electric heat tracing control strategies of different sections of the pipeline are generated in combination with relative humidity data of the cabin. The method can adapt to the real-time physical property of gas and the heat exchange state of the pipeline section, and the heating control execution mode of the gas pipeline is optimized.

The application relates to the technical field of primary and secondary fusion complete ring network boxes, in particular to a high-reliability primary and secondary fusion complete ring network box, which comprises a box body, a ring network cabinet installed in the box body and a plurality of ventilation openings arranged around the box body. The primary and secondary fusion complete ring network box can utilize the phase-change material filled in the heat preservation box to absorb the external radiant heat and the residual heat of the equipment in the box during the day and stably store the heat, and the heat is conducted through the heat-conducting copper plates in the heat increasing and dew removing assembly at night, is then directionally transmitted to the inner wall of the box through a plurality of heat dissipation copper sheets, and the first temperature insulation cover wraps the rest of the side surfaces of the heat dissipation copper sheets, so that the heat loss to the air in the box or the outside of the box is prevented, the heat is forced to act on the inner wall, the temperature of the inner wall is prevented from being reduced below the dew point of the air, dew is prevented from being formed on the surfaces of the secondary elements and cable joints, hidden dangers such as the decrease of insulation performance and the corrosion of elements are effectively avoided, and the overall operation reliability is ensured.

The invention relates to a temperature control system control method and device, temperature control equipment and a storage medium. The method comprises the steps that even if the environment temperature and humidity change dynamically, the air dew point temperature can be recalculated according to the air dry-bulb temperature and the relative humidity which change suddenly, and a proper safety margin is calculated by combining the humidity change rate under the environment temperature and humidity change suddenly; the target temperature of the matched environment is calculated by integrating the air dew point temperature and the safety margin, and then the operation parameters of the temperature control equipment are controlled according to the target temperature so as to effectively respond to dynamic sudden change of the environment temperature and humidity, and it is ensured that the temperature of an evaporator coil does not fluctuate along with the target temperature to cause the condensation phenomenon.

The embodiment of the invention provides a baking waste heat recovery method and system based on multistage heat exchange, and belongs to the technical field of waste heat recovery and utilization. The method comprises the steps that exhaust operation parameters in the baking process are obtained, and a plurality of thermotechnical stages and stage identifiers corresponding to the thermotechnical stages are obtained; determining a heat grade index and a dew point difference of each thermal stage based on the stage identifier, and generating a cascade sequence and a valve position control parameter corresponding to each thermal stage; calling the corresponding cascading sequence and the valve position control parameters according to the stage identifiers to execute sequential heat exchange, and calculating to obtain a heat recovery result of each thermal stage; and according to the stage identifier and the production line rhythm, the heat recovery result is distributed to the heat utilization link according to the priority matrix, and the priority matrix and the distribution quantity are dynamically corrected based on the energy demand during stage switching. According to the scheme, dynamic matching of heat energy and self-adaptive control of condensation risks in the baking process are achieved, so that the waste heat utilization rate is increased, and the temperature field in the furnace is kept stable.

The invention discloses a fishway observation window and a preparation method thereof, belongs to the technical field of ecological monitoring, and can solve the problems that a traditional fishway observation window lacks a long-acting anti-fog function, the biological adhesion problem is serious, and the function integration degree is low. The fishway observation window comprises a transparent composite substrate; the conductive anti-fog layer is embedded in the middle of the transparent composite substrate and is used for raising the temperature to a preset temperature after being electrified, and the preset temperature is higher than the air dew point temperature; the biological corrosion resistant coating is arranged on the surface of one side of the transparent composite substrate; the anti-biological-corrosion coating comprises a plurality of convex structures, and each convex structure is formed by spraying an anti-biological-corrosion material and then curing the anti-biological-corrosion material; the hydrophobic coating is arranged on the surface of the side, away from the transparent composite substrate, of the biological corrosion resistant coating and covers the biological corrosion resistant coating. The invention is used for the fishway observation window.

The utility model relates to a two-stage rotating wheel dehumidification combined type air conditioning unit, which comprises a first rotating wheel system, a second rotating wheel system, a third rotating wheel system and a fourth rotating wheel system, the second rotating wheel system comprises a second rotating wheel, a second fan assembly and a second temperature regulation and control assembly, a treatment air inlet pipeline and a regeneration air inlet pipeline of the second rotating wheel are both communicated with a treatment air outlet pipeline of the first rotating wheel, and a regeneration air outlet pipeline of the second rotating wheel is communicated with a regeneration air inlet pipeline of the first rotating wheel. According to the utility model, the two stages of rotating wheels work cooperatively, so that moisture in air can be effectively removed, a lower dew point temperature is achieved, and the dehumidification efficiency is improved; the dehumidification efficiency and the energy utilization efficiency are improved, and the operation cost of the air conditioning unit is reduced; and the operation efficiency of the air conditioning unit and the comfort of a user are improved through accurate temperature and humidity control and flexible switching of a single-rotating-wheel mode and a double-rotating-wheel mode.

The present application belongs to the technical field of thermal comfort, and particularly relates to an index extraction method for constructing a thermal comfort model, comprising the following steps: S1, selecting a test site, and cleaning up articles and sundries that are not needed in the site; S2, setting up an infrared thermal image temperature measurement sensor, an air temperature and humidity sensor, an air speed sensor, a visible light sensor, and a resistance type dew point hygrometer in the site. The present application proposes that two groups of different test data are respectively collected in the process of data collection, and the two groups of data are respectively screened, and finally in the process of data preprocessing, the site data containing the subjects in the two groups of data are compared with the site data not containing the subjects in the other group, whether the same items in the two groups of data exist abnormities is judged, if accurate, the process continues, if the data is abnormal, data collection is re-performed, so that the index data accuracy for constructing the thermal comfort model is improved.

Drying and / or curing system (1), in particular for drying and / or curing painted and / or glued workpieces (4), with at least one zone (7 - 11) through which the workpieces (4) can be moved, and with a fresh air and / or exhaust air volume control (50) which serves to control a quantity of fresh air that can be introduced into the zone (7, 11) and / or a quantity of exhaust air that can be discharged from the zone (8, 10), wherein the fresh air and / or exhaust air volume control (50) varies the quantity of fresh air and / or exhaust air depending on a current number of workpieces (4) supplied in a time interval, characterized by the fact that The amount of fresh and exhaust air is controlled depending on a determined dew point in such a way as to prevent the formation of condensate. and / or that the amount of fresh and exhaust air is controlled depending on the total heat capacity in such a way as to prevent the formation of condensate. and / or that the amount of fresh and exhaust air is controlled depending on the total amount of carbon in such a way as to prevent the formation of condensate.

Provided is a technique capable of exchanging a roll containing a specific substance that reacts with moisture to produce a reaction substance between devices. A roll exchange carriage for exchanging a roll containing a specific substance that reacts with moisture and generates a reaction substance is provided with: a roll storage unit that has a main body part capable of storing the roll, an opening part for inserting / pulling out the roll from the main body part, and a cover for covering the opening part in an openable / closable manner, and that can be inserted into a device capable of controlling the dew point temperature; and a trolley-side air supply pipe that is connected to the main body part and supplies dry air so that the interior of the main body part is at or below a predetermined dew point temperature.

This invention discloses an intelligent collaborative control system and method for preventing blockage and corrosion at the cold end of an air preheater. The system includes a hot air circulation module, a gradient temperature control layer, a swirl purging device, and an intelligent control system. The hot air circulation module forms an adjustable heat source by mixing airflows of different temperatures. The gradient temperature control layer is used to create a bottom-up temperature gradient at the cold end. The swirl purging device is used for efficient dry cleaning of ash accumulation on the heat exchange elements. The intelligent control system coordinates temperature regulation and the purging process based on operating parameters. This invention introduces a predictive model to anticipate pressure difference trends and combines it with an acid dew point temperature control strategy to achieve linked control of mixed hot air temperature regulation and preventative purging, thereby maintaining the cold end temperature stably within a safe range and promptly suppressing ash accumulation.

1. The name of the design product: split type cold mirror dew point meter (485-I type). 2. The use of the design product: used in metallurgy and ceramic high temperature process, industrial waste gas treatment, precision manufacturing and material processing field, medicine and environmental protection field, power and industrial equipment field, aerospace temperature and humidity detection, and temperature and humidity calibration transmission of measurement industry. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view.

This invention belongs to the field of dehumidification equipment technology and discloses a precise temperature control system for a variable frequency dehumidifier with dual-mode temperature and humidity coordination. Through deep collaboration between the dual-mode decision module and the temperature and humidity calibration module, it dynamically switches between dehumidification-priority and temperature-priority modes based on a fuzzy PID fusion algorithm. Adjustment weights are allocated in real time according to temperature and humidity deviations. Combined with dew point temperature modeling and complementary correction technology, it achieves synchronous and precise control of both parameters. A multi-sensor layout covers key locations, coupled with an adaptive self-calibration mechanism and data preprocessing function, ensuring the accuracy and stability of the collected data and adapting to various extreme temperature and humidity conditions. During mode switching, collaborative commands link various execution modules, avoiding humidity rebound after cooling shutdown or dehumidification failure during temperature control. The variable frequency speed control module uses an adaptive fuzzy PID algorithm with multi-input fusion to dynamically optimize speed parameters. Combined with a dynamic frequency step size adjustment mechanism, it achieves rapid response to large deviations and precise fine-tuning for small deviations.

This invention provides a dehumidification system that can stably control the dew point in a low-dew-point room based on weather conditions. [Solution] The dehumidification system estimates the predicted value of the outside air dew point at a predetermined date and time in the future based on weather forecast data. The dehumidification system also estimates the supply air inlet temperature, which indicates the temperature at the inlet of the supply air area, and the supply air inlet absolute humidity, which indicates the absolute humidity at the inlet of the supply air area, based on the inlet conditions of the supply air area. Then, based on the predicted value of the outside air dew point, the supply air inlet temperature, and the supply air inlet absolute humidity, the dehumidification system calculates the regeneration inlet target temperature, which indicates the target temperature at the inlet of the regeneration area at a predetermined date and time in the future. After calculating the regeneration inlet target temperature, the dehumidification system performs at least one of the following actions to bring the temperature of the regeneration heater closer to the regeneration inlet target temperature: temperature control of the regeneration heater, airflow control of the first fan installed on the inlet side of the supply air area in the first duct, and airflow control of the second fan installed on the outlet side of the regeneration area in the second duct.

The present disclosure relates to the management of dynamic polling rates of sensors. A thermal management system is described that is configured to dynamically change the polling rate of wireless sensors within a data center environment over time. Sensors that then provide temperature, humidity, and dew point readings are used to cause an increase or decrease in the cooling power of cooling equipment in the data center environment, enabling the cooling equipment to be more reactive to the varying overall utilization of computing resources within the data center environment. As the computing power used by the computing resources fluctuates at a non-static rate within the data center, the thermal management system adjusts the polling rate of the sensors with the rise or fall of the production cycle, making the overall data center environment more efficient.

The invention discloses an anti-fogging endoscope lens temperature control method and system, and relates to the technical field of temperature control, and the method comprises the steps: arranging a temperature and humidity sensor on an endoscope, collecting temperature and humidity data, carrying out the noise suppression, and calculating the temperature and humidity of an endoscope lens according to the temperature and humidity data; performing stable clamping on the humidity, calculating a normal pressure correction coefficient, calculating saturation water vapor pressure of an endoscope lens so as to obtain actual water vapor pressure, performing inverse solution through the normal pressure correction coefficient so as to obtain an instantaneous dew point, and smoothly outputting a final dew point by using a first-order index; calculating an instant dew point margin according to the lens temperature and the final dew point, calculating a negative margin correction item, predicting a future margin, calculating a logistic risk index, and finally comprehensively obtaining a lens adaptive margin; and calculating the total error of PID control, outputting a control command by adopting a PID control algorithm, and executing the control command. According to the invention, the fogging probability and the definition fluctuation are obviously reduced, and the temperature overshoot and fluctuation are reduced.

An annealing facility for continuously performing finish annealing by sequentially passing a steel sheet after cold rolling through an annealing furnace having at least a first zone, a second zone, and a third zone, wherein each zone of the annealing furnace can independently control the gas composition and dew point of the atmosphere, and the second zone is composed of a heating zone, a cracking zone, and a cooling zone in which the atmosphere temperature is 900°C or higher, and the nitrogen content of the atmosphere gas is controlled to be 30 vol% or less and the dew point to be -40°C or lower. In addition, by performing finish annealing using the annealing facility, an electrical steel sheet, preferably a non-oriented electrical steel sheet with low iron loss, is manufactured.

The application discloses a rotating wheel type humidity removal device, which comprises a regenerating fan, an adsorption type dehumidification rotating wheel, a heater, a filter one, a filter two, a main treatment fan, a cooling coil and a new ventilation pipeline, the suction inlet of the regenerating fan is connected with the adsorption type dehumidification rotating wheel, and the adsorption type dehumidification rotating wheel is further connected with the heater, the cooling coil and the new ventilation pipeline respectively. The rotating wheel type humidity removal device can ensure that the dew point value of the ultra-low dew point gas is not affected by the leakage of the pipeline during the process that the rotating wheel type dehumidifier reaches the use environment, ensure that the ultra-low dew point condition is consistent during use, and guarantee the use effect of the whole rotating wheel type dehumidifier.

The invention discloses a high-precision anti-interference chilled mirror dew point measuring device and method based on semiconductor refrigeration, and relates to the technical field of atmospheric environment monitoring and precise instrument manufacturing. The device mainly comprises an optical measurement module, a temperature measurement module and a control processing unit. According to the method, the mirror surface is cooled through the semiconductor cooler, and the control processing unit integrates a self-adaptive PID algorithm to dynamically adjust the refrigeration power. Light emitted by the collimated light source is reflected by the reflective mirror surface and then received by the reflective photoelectric sensor, and the reflected light intensity is dynamically compensated based on a reference light signal through the change of reflectivity so as to eliminate common-mode interference. The measurement method comprises the following steps of: initializing and recording multiple paths of optical signal baselines; step cooling of the mirror surface is controlled, and synchronous monitoring is performed; the optical signal is calculated and processed in real time, and dew formation starting is judged based on a dynamic threshold value; pID control is switched to enable the temperature to be finely balanced near the dew point, and a stable value is recorded; correcting and outputting a final dew point value by utilizing the compensation model; refrigeration is stopped, the mirror surface is evaporated and reset through waste heat, and the next circulation is started.