3 results about "High altitude hypoxia" patented technology

1. Name of the product in this design: High Altitude Hypoxia Test Chamber. 2. Purpose of this design: An experimental chamber for simulating a high-altitude environment in biological experiments. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

This invention discloses a multi-channel PPG wide-range blood oxygen saturation estimation method for high-altitude environments, belonging to the technical field of physiological signal processing and dynamic blood oxygen monitoring. The method first acquires multi-channel PPG signals and reference measurements, and obtains standardized data through preprocessing such as time alignment, invalid data removal, and noise suppression. Then, it constructs an estimation model containing a quality-aware feature extraction module, an attention-based cross-site fusion module, and a regression head. Reliability masks are generated through multi-scale convolution to optimize feature quality, and multi-head self-attention is used to fuse features from multiple sites. Training employs a composite loss function combining MSE and PCC to iteratively optimize parameters. This invention can accurately handle PPG signal noise interference in high-altitude environments, achieving accurate and continuous estimation of blood oxygen saturation over a wide range of 70%-100%, making it suitable for high-altitude hypoxia monitoring scenarios and highly practical.

The application relates to a handheld negative ion generating device and a use method, high-concentration negative ions are generated through a photocatalytic reaction, and the human mouth and nose area is accurately guided. After the negative ions enter the human body through the respiratory tract, the combination of hemoglobin and oxygen can be effectively promoted, the blood oxygen saturation is improved, pure oxygen inhalation is not required, and side effects such as oxygen poisoning are avoided. The negative ions are generated through a photocatalytic reaction, there are no harmful by-products such as ozone, the device is more energy-saving and environment-friendly, and the negative ion release is stable and efficient. The overall structure of the device is compact, handheld and portable, can be flexibly adapted to home daily conditioning, outdoor activities, high-altitude hypoxic environments and the like, and the problem that large blood oxygen improvement equipment is limited in use is solved. The device has negative ion intensity and airflow velocity adjusting functions and is convenient to operate; the device is also integrated with oxygen generation functions and meets hypoxic demands in different degrees. The application has the advantages of high safety, comfortable use, long-lasting endurance and the like and is suitable for daily conditioning and emergency hypoxic use of people with low blood oxygen saturation.