5 results about "Breathing zone" patented technology

This invention belongs to the field of fan control technology. It provides a laboratory exhaust gas-induced high-altitude jet fan control system, comprising: a multi-source data acquisition module for real-time acquisition of multi-dimensional time-series data related to laboratory exhaust gas emission safety, including fan operating parameters, building environment parameters, exhaust gas source equipment status parameters, and meteorological environment parameters; and a predictive maintenance and early warning module based on the multi-dimensional time-series data. By integrating multi-source data perception, chronic risk trend prediction, system vulnerability assessment based on digital twins, and graded resilience control strategies, a closed loop of "perception-prediction-assessment-decision-execution" is constructed. This achieves early identification, proactive early warning, and adaptive control of coupled risks between "equipment-building-environment-personnel," thereby enhancing the proactive safety capability to prevent toxic exhaust gases from entering the breathing zone of personnel.

Protective hood, particularly for welding. This protective hood (10) includes an optical unit (20) with two transparent screens (22A; 22B), which are connected by a sealing structure (24) and form a cavity (V22) between them. The sealing structure has a top opening (26A), through which the cavity (V22) opens and which is designed to be connected to a ventilation air duct (98), and a bottom opening (26B). The protective hood includes a face mask (40), which defines a breathing zone (Z40) and is configured to be secured over the user's nose and mouth. The face mask has an air inlet (40A), through which the breathing zone (Z40) is fluidly connected to the bottom opening, and an air outlet (40B) for the exhaust of the air breathed by the user. In operating configuration, an airflow carried by the duct reaches the breathing zone by passing through the cavity.Figure for the abbreviation: Figure 2.

The present application relates to the technical field of edge computing, and discloses a building automatic control multi-protocol data fusion and edge linkage control method, comprising the following steps: step S101, constructing an observation vector; step S102, constructing a breathing zone concentration field model; step S103, calculating a differentiable peak value agent and a peak weight; step S104, generating a peak migration vector; step S105, identifying a sensitivity vector; step S106, constructing a linkage target function; step S107, performing a projection gradient descent operation; and step S108, mapping a global control total amount adjustment instruction and issuing it. The present application realizes the fusion of multi-protocol heterogeneous data, takes into account indoor air quality, comfort and equipment operation energy consumption, constructs a multi-target linkage optimization system, calculates spatial distribution weights according to high concentration area distribution and migration trend, realizes regional differentiation regulation of air supply volume, and adapts to the differentiated air quality demand of each area of the building.

The application discloses a kind of indoor air quality real-time monitoring system based on multi-sensor fusion, specifically relates to indoor environment monitoring and health protection technical field, and sensitive population breathing zone data is collected by transient exposure perception module and generates transient exposure data, time alignment fusion module carries out time alignment to multiple sensor data and generates multidimensional pollution exposure vector, risk driving control module is mapped into health risk utility value and generates control instruction with minimization as target, and health feedback calibration module generates new individualized exposure response boundary parameter according to health outcome feedback and reversely adjusts the sampling strategy and determination criterion of perception module, and forms closed loop optimization;The application realizes accurate exposure evaluation by breathing zone transient exposure perception and time alignment fusion;Through health risk utility driven control, realize the collaborative optimization of multiple pollutants;Through health outcome reverse calibration, closed-loop adaptive mechanism is constructed, and the health protection effect for sensitive population is significantly improved.