Release date: 2016-04-19 Currently, the most common technique for collecting body movement data is to calculate the number of steps. This technique was first used on pedometers and now also provides consumers with data sources. In addition to the change in shape – from the belt clip to the bracelet, most staging devices need to add other functions to detect other indicators of the body. There are thousands of sensors on the market, and there will be more and more. Now, engineers are using sensors to detect and measure heart rate, sweat, temperature, sleep, reproductive health, calories, GPS coordinates, blood pressure, UV and glucose levels. So, what are these sensors used for, and which products will they be used for? Foresee what happens, please see below for decomposition. Heart rate There is a simple type of hardware called PPG that measures blood beats under the skin. It works by placing a light sensor next to the green light. When the blood pulse under your skin changes the brightness of the light sensor, the change in brightness is the heartbeat signal. This hardware is simple, but the data is not accurate enough. You only need to swipe your hand over the sensor to pretend to be a heartbeat. Therefore, wit software developers have added some features to make this sensor get the most accurate data. This type of hardware also uses smart watches, FitBit, Microsoft Brace 2 and so on. If you see a green light on your wearable device, don't be afraid, it's just a heart rate sensor. Measuring heart rate is important because it can tell you a lot about overall health. If your heart beats too fast for your age and weight range, it may mean that some organs in your body are not functioning properly. In pursuit of a healthy life, in addition to fitness and attention to diet, there is also a stress-free lifestyle brought by a healthy heart. Sweat Sweating is the way the body cools and releases toxins, so for those who are interested in all types of human data, sweat is the treasure chest. The skin electrical sensor detects molecules in your sweat. The sensor sends a small current to the pores, and when you sweat a lot, the signal returns faster than when you don't sweat. The sensor basically analyzes the sweat and tells you about your body. For example, if you drank a lot of wine this weekend, sweating this morning to catch a car, you will be surprised to find that your sweat will reveal the secret of your weekend indulgence. temperature When combined with heart rate and sweat sensors, temperature sensors can reveal a lot of information about a person, first and foremost their emotions. This type of computational data is generally used in emotional computing, especially in games. The idea is that the computer can know your emotions and respond appropriately. If you feel depressed, your skin may become sticky, your heart rate will increase very slightly, and your body temperature will rise. After remembering these data points, the computer will let you go for a walk and breathe fresh. air. Sleep Another feature that can be tracked by wearable devices is sleep, which also makes it different in accuracy on different devices. Some devices just tell you how long you have slept (but you have to tell it you are asleep), while other devices know when you are asleep and track your sleep cycle and heart rate. The most productive and interesting thing is whether you have enough sleep, and how long it takes to sleep will always be a topic of debate; but most people agree that 8 hours is the ideal choice. I like to know if I sleep well, especially if the sensor can tell me when I go into deep sleep, then I can know that I might have been lying in bed for 8 hours, but I really slept for 5 hours. Calorie People no longer need to calculate calories per day because wearable technology takes over the task. Collecting calorie burning data provides important information, especially if you want to know what exercise is most effective. Collecting the sensors described above, you can summon the hardware that calculates the calories burned. The algorithm is the reason why this data is so important. Some devices will tell you how many calories you have ingested (no details on food and weight, it's hard to know), while others tell you how many calories you burn. GPS Some sports training devices have built-in GPS sensors, which is very helpful for sharing travel routes and distances. In addition to tracking your location, another great thing is to look at the altitude you have traveled. Not all landscapes are flat, so the sensor, along with basic activity tracking, can improve the accuracy of your workout. blood pressure Measuring blood pressure is no longer as traditional as doctors using sphygmomanometers and stethoscopes. For people with high blood pressure or low blood pressure, it is too convenient to measure blood pressure with a home wireless system. Although it's not as convenient as a wearable device, it does carry it in your bag. Withings has a great device that can connect to your smartphone or tablet and share any unusual data with your doctor. UV We all know that the sun is getting stronger, because the O-shaped area is getting smaller and smaller. This means that every time you go to a dermatologist, they will remind you to apply sunscreen to exposed skin every day. UV detection is an important indicator worth noting. Some devices will measure your time in the sun, combine your age, and your skin sensitivity to inform you at the appropriate time, it is time to go indoors. Other devices will let you know the intensity of the UV light and send you a reminder that you need to apply more sunscreen. Either way, you need a smartphone to help turn the data into understandable information. glucose Insulin measurement is critical for people with diabetes. Some devices have passed medical approvals to measure your body's glucose levels. Some are chubby watches, while others are a variety of small patches that the wearer can determine. However, people who use these devices also need to cooperate. Because you need diabetes every day to worry about your health, it is important to raise your alert while maintaining a simple lifestyle. At present, there are many sensors in the research and development stage, and they will become smaller and smaller in the next few years. More and more accurate. 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