The bracelet can provide us with the function of movement monitoring and sleep recording. When you wear a bracelet every day, you can record the steps you take and the energy you consume. Different brands and different bracelets have different functions, and the bracelet mainly provides the collection and analysis of human health data, and then displays it.
The bracelet can provide us with the function of movement monitoring and sleep recording. When we wear a bracelet and exercise every day, we can record the steps you take and the energy you consume. Long sitting reminder. For people who sit in the office, they often sit for half a day, which is very harmful to their health. After the setting is successful, when we do not move for the specified time, we will be reminded by the vibration of the bracelet. When your bracelet vibrates, it’s time to leave your seat.
书面上对智能手环的定义很简单，就是一种穿戴式智能设备，通过手表形式展现给人们，便于携带，俗称手环。人们带上智能手环可以记录日常生活中的锻炼、睡眠、部分还有饮食等实时数据，并将这些数据与手机、平板、ipod touch 同步，起到通过数据指导健康生活的作用。
In writing, the definition of smart bracelet is very simple. It is a kind of wearable intelligent device, which is displayed to people in the form of watches and is easy to carry, commonly known as bracelet. People can record the real-time data of exercise, sleep, part of diet and so on in their daily life with smart bracelet, and synchronize these data with mobile phone, tablet, iPod touch, playing a role of guiding healthy life through data.
On the market, the functions of general smart bracelets are different, most of which are used to track health data. For example, monitoring steps, mileage, calorie consumption, sleep quality and other user health data, to provide users with reasonable diet, exercise or sleep advice, to help users better manage their own health. At present, most of the smart bracelets sold in the market have not passed the secondary medical device test, or have not obtained the secondary medical device license. Intelligent bracelets without medical device license should be called electronic products. The measured human health index can only be used as a reference, not for medical diagnosis. Therefore, the smart Bracelet in our life is basically non-medical electronic products.
Smart bracelet is not only a smart device, but also a charming accessory for users who are accustomed to wearing jewelry.
Pedometer. Intelligent bracelet is a high-grade pedometer, which can not only accurately calculate the user’s movement steps through vibration induction, but also accurately measure the user’s movement distance, calories, fat consumption and so on.
Alarm clock. Smart bracelet can not only play the role of general alarm clock, but also remind users to rest by setting fatigue time.
Sleep monitoring. Users can set the smart bracelet to sleep mode before going to bed, and synchronize it with the smart phone after getting up, so as to intuitively display the user’s sleeping time, waking time, or deep sleep / light sleep, as well as the overall sleep quality and other information.
通过它内置的 GPS 连接器，可以随时的把用户的身体状况和位置信息发送给家人或者医院，这个功能对于老年用户来说很有用。
Through its built-in GPS connector, the user’s physical condition and location information can be sent to family members or hospitals at any time. This function is very useful for elderly users.
Intelligent bracelet has waterproof function. You don’t need to be damaged even if you swim with it, and the pedometer has no waterproof function.
Intelligent bracelet can be said to be a high-grade pedometer, with the general pedometer steps, measuring distance, calories, fat and other functions; Pedometer is the core selling point of intelligent bracelet. In fact, it is based on the three-axis acceleration sensor to track the steps, record the user’s daily walking situation and target achievement rate, and record the movement trend for a period of time to help understand and analyze the user’s health habits, which has certain reference value. The intelligent Bracelet calculates calories by calculating the steps, and then gets the calorie consumption according to a certain algorithm, including the steps of our normal walking, jogging, fast running and other sports.
Another function of smart bracelet is to monitor sleep quality, including sleep time, wake-up time, light sleep time, wake-up times and deep sleep time, which is another propaganda point of many bracelets. Some smart bracelets form a long-term mechanism through daily monitoring, draw the long-term sleep quality trend, help you understand the sleep status and make improvements. In medicine, deep sleep or shallow sleep should be diagnosed by EEG, eye movement, chest and abdomen movement and other parameters. According to the principle of calculating sleep quality, intelligent Bracelet does not have EEG and eye movement functions at present. It can be said that the sleep quality calculated only based on body movement can only be used as a reference. Some bracelets need to be manually operated every time they switch from exercise state to sleep state (or back).
3. Heart rate
At present, most of the functions of smart bracelet on the market to monitor heart rate are photoelectric transmission measurement, which is also useful to measure blood pressure. In principle, the sensor that the bracelet is in contact with the skin will emit a beam of light on the skin to measure the reflected / transmitted light. Because blood can absorb light of a certain wavelength, when the heart and viscera pump blood, the wavelength will be absorbed in a large amount, so as to determine the heartbeat. However, the disadvantage is that the power consumption is large, and it will be interfered by ambient light at the same time. Another method is to test the ECG signal. The hand ring sensor can judge the user’s heart rate by measuring the electrical signal of myocardial contraction. The principle is similar to that of ECG, which is more accurate.
4. Show, show off?
This should be more of the hidden lines of woodlouse’s inner heart. They use these bracelet’s main purpose is to show off, rather than focusing on functionality, so these people consider more styles, good colors, comfortable collocation, match clothes, and so on. There is no other meaning, just want to say, functional things, appearance is not important, but not so important.