Gas supply device for bio-protective equipment and control method

Through modular design and fuzzy PID algorithm control, precise control of gas temperature and pressure within the biological protective equipment is achieved, solving the problems of complex operation and limited functionality of existing devices, improving wearing comfort and safety, and providing backup air supply function.

CN118001629BActive Publication Date: 2026-05-29YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANSHAN UNIV
Filing Date
2024-02-04
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing positive pressure protective equipment has complex air supply devices that are limited in function and make it difficult to control the internal pressure. They are also inflexible to wear and pose risks of instantaneous pressure increases and negative pressures, which increase the risk of infection. Furthermore, they lack an intelligent control system that integrates filtration, pressure control, and temperature control.

Method used

An air supply device was designed, comprising a filter module, a cooling module, a power supply module, a housing module, a carrying module, and a control module. The modular design enables air supply dehumidification, air filtration, and cooling and pressure stabilization. A fuzzy PID algorithm based on temperature and air pressure dual parameters is used for closed-loop control. A backup air supply fan is provided to ensure smooth breathing.

Benefits of technology

It achieves precise control of gas temperature and pressure within biological protective equipment, improving wearing comfort and safety. It is multifunctional, easy to operate, and has a backup air supply function to cope with control system failures, ensuring user safety.

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Abstract

The application provides a kind of air supply device and control method for biological protection equipment, it is related to biological protection equipment technical field, air supply device includes filter module, refrigeration module, power module, shell module, air supply and connection module, back module and control module, filter module is set at the bottom end of shell module, refrigeration module is divided into first-stage refrigeration and second-stage refrigeration, and is respectively set at the end face of shell module and filter module, most parts of power module and air supply and connection module are set in shell module, back module is set at the back of shell module, control module further includes controller, control panel and sensor, and controller is set at one end of back module.The application realizes air supply dehumidification, air filtration and temperature reduction and pressure stabilization in biological protection equipment through air supply device, and further improves comfort under the premise of ensuring the safety of wearer.
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