Tianjin University develops wearable physiological signal monitoring and emergency system

On June 1, a research team from the School of Precision Instrument and Optoelectronic Engineering of Tianjin University and the Institute of Disaster Medicine of Tianjin University developed a wearable physiological signal monitoring and emergency system. By using optical sensors, the contestants’ health status can be monitored in real time. Physiological signals such as body temperature, pulse, and respiration solve the problem of lack of first aid equipment and first aid means in special environments at the scientific and technological level. At present, the system has passed the proof-of-principle.

With the improvement of people’s living standards and the development of sports, more and more people are participating in sports, and some extreme sports have gradually become a popular way of mass fitness. However, there were also some distressing safety accidents that followed, which sounded the alarm for people, especially the recent tragedy in the Yellow River Stone Forest Mountain Marathon Cross-Country Race, which caused the whole society to pay attention to the safety of sports activities.

According to the researchers, the physiological signal monitoring and first aid system developed by it, the physiological signals detected by it are connected to mobile phones or satellites, and can be directly transmitted to the physical sign monitoring center of the competition organizing committee. Professional medical staff can monitor the players’ heartbeat and body temperature in real time. Vital signs, in order to keep abreast of the physical condition of the players.

It is understood that due to the small size and light weight of the optical sensor, the wearable system can not only be designed as a clothing accessory, but also can be designed as a light device such as a wristband to reduce the impact on the player’s sports state. Since the core component of the optical sensor is the optical fiber, the optical fiber device has the advantages of acid resistance and resistance to external electromagnetic interference, which can effectively avoid the influence of sweat on the sensor performance, especially suitable for long-term sports. Compared with traditional sports bracelets, this device has high monitoring accuracy, light weight, full functions, and is more suitable for extreme environments.

At the same time, the wearable system integrates a positioning system and an automatic search function. The automatic search function is based on the wireless sensor ad hoc network technology, which can automatically network with the central control system within a certain range for signal transmission. In the mountainous environment where the mobile phone signal is lacking, when the rescuer equipped with the search and rescue system holds the mobile central control system, it is convenient to query the position signal of the player, so as to quickly reach the rescued person.

Once a contestant’s body temperature and heart rate change drastically, the remote monitoring personnel will immediately issue a suspension order and guide the contestant to effective self-rescue once they observe that the contestant’s body temperature, heart rate, breathing and other signals reach dangerous thresholds. At the same time, professional rescuers were dispatched in time to carry rescue equipment, carry out directional rescue according to the players’ position signals, and reach the players during the golden time of rescue to save the players’ lives. The use of this system can effectively avoid sudden safety accidents, maintain life safety, and ensure that the contestants implement self-rescue and rescue in the first time.

With the development of Electronic technology and the continuous improvement of people’s attention to the health of the elderly, more and more physiological monitoring equipment has been developed and applied. However, the existing physiological monitoring equipment has practical problems such as few monitoring parameters, high price, poor real-time performance, and poor portability. Wearable technology is a new technology for non-invasive monitoring of human body status with functions such as signal detection and processing, signal feature extraction and data transmission.It integrates life information detection technology with the clothes people wear every day, and can realize the acquisition of basic life information in a natural state.[1-2]. Wearable technology has the characteristics of low physiological load, low psychological load, mobile operation, easy to use, support for long-term continuous work and wireless data transmission. It has been widely used in physiological information monitoring, medical rescue and rehabilitation treatment and human health. closely related fields. Therefore, it is of great practical significance and application value to use wearable technology to build a wearable physiological monitoring system to realize continuous and long-term monitoring of physiological parameters such as patient’s ECG, respiration, blood pressure, and body temperature.

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