Automatic water rescue bracelet

Abstract

The invention relates to an automatic water rescue bracelet, and belongs to the field of electronic apparatus. A heart rate monitoring device measures pulse by photoelectric plethysmography, and obtains accurate pulse data; then a photoelectric sensor converts a measured signal into an optical signal, and then the optical signal is converted into an electrical signal by means of a photoelectric element; a comparator compares a mean value of the pulse data with a proposed standard value, and determines whether the pulse data are within a safe range or not; then a water conductive device switchis used for judging whether a person falls into water, thereby forming a second judgment basis; and then, an A / D (analog-digital) converter converts an analog signal into a digital signal, and transmits the digital signal to an MCU (microprogrammed control unit) for processing, the MCU processes the digital signal transmitted from the A / D converter, and if measured pulse frequency is within a dangerous frequency range, the MCU generates a control signal to start an alarm device to realize the alarm, and triggers a switch to start a gas-flushing device to inflate the bracelet, so that a drowning person can float on the water surface.

Description

technical field [0001] The invention belongs to the field of electronic equipment and relates to an automatic water rescue bracelet. Background technique [0002] With the development of the economy, people's living standards are improving day by day, and the lifestyle and philosophy of life have become more open and scientific. In the hot summer, there are countless people swimming in the sea; many people put swimming on their fitness schedule. Therefore, swimming has penetrated into people's lives. However, swimming is dangerous. According to the statistics of the Ministry of Health of China, 57,000 people drown in my country every year, which is equivalent to an average of more than 150 people dying of drowning every day, most of whom are children and students. Whether it is water-based or poor-water, when encountering danger, life seems so vulnerable. [0003] This patent is designed and manufactured based on today's smart bracelets. There are also airbag wristbands ...

AI Technical Summary

Problems solved by technology

But the disadvantage is that the water depth pressure sensor has high requirements for water depth (data) changes, is not sensitive enough, and is affected by factors such as temperature, voltage spikes, light, electromagnetic radiation, electrical interference, shock and vibration, overvoltage, etc.; and rescue can only be done manually. Rescue cannot bring the drowning person to the surface in time, and the best rescue time will be missed

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