What is a smart smart bracelet? The bracelet is a wearable smart device. Smart bracelets can usually help users record real-time data such as exercise, sleep and diet in daily life, and synchronize these data with iOS or Android devices, thus playing a role in guiding healthy life through data.
In layman's terms, a smart bracelet is a wearable device, which is similar in shape to a wristband. It can achieve health functions such as heart rate measurement, step counting, sleep quality, diet, etc., and can also be combined with smart phones to achieve various functional extensions. Jawbone is the main popular smart bracelet available on the market now.
Up2, splash bracelet, FitbitFlex, etc.
How to track human health data? To put it bluntly, the purpose of the smart bracelet is to make it easier for people to collect data and collect their health data (such as exercise, sleep and diet data). Through such a device, it also allows us to understand our health more intuitively, so as to develop good healthy living habits.
The same is true for smart bracelets. It doesn't matter if there is no such equipment. For those white people who sit in the office all day, work pressure, poor sleep and seldom exercise, wearing such a device can always remind you to pay attention to your health, urge you to do more exercise, eat properly and pay attention to sleep. Information comes from (OFweek wearable device network)
How does the smart bracelet measure our sleep state?
With the development of science and technology, people are gradually committed to making smart devices more portable. Smart bracelets and smart watches are successful examples of such products. A good smart bracelet can not only synchronize information with the mobile phone, but also monitor our physical condition in real time, including sleep state. So how does this little thing on your hand know our sleep state? How did these data come from? Are they accurate?
In fact, the principle of bracelet detecting whether we are sleeping is very simple. At present, many bracelets on the market have built-in human motion recorders to detect the motion state of the human body. As the name implies, the human motion recorder is a device to detect the motion state of human body, which is similar to a sensor. It calculates sleep data by detecting our motion data in all directions, and the detected sleep depth is also calculated by this sensor. When we are in deep sleep, the muscles of the whole body are in a relaxed state, and when we are in shallow sleep, the body will not produce great exercise. With these detection data and corresponding algorithms, we can calculate some estimated values and get our body posture data through repeated operations.
As for the accuracy of bracelet detection data, because the detection data of smart bracelets are collected by sensors and then calculated by algorithms, the results obtained by different bracelets and different hardware will be somewhat different, so it is necessary to check objectively.
Finally, the data provided by the smart bracelet is actually more of an alarm. Sleep state is a very complicated scene. Although the current technical level is already very high, it is only slowly approaching the real situation, so we should keep a correct concept and face it objectively.
How to read Huawei bracelet data through third-party tools
After you get the bracelet, please follow the following steps to use it normally.
1. Turn on the Bluetooth of the mobile phone and search for the bracelet through the APP.
2. Click √ on the bracelet screen to complete the connection.
3. You can look at the source of WeChat sports data.
4. Search and download the "Huawei Wear”APP in Huawei application market or AppStore.
5. Connect the charger bracelet and automatically start to enter the pairing state.
Through the acceleration sensor (which can sense the moving direction and acceleration of the object), the intelligent sports bracelet adopts the working principles of piezoresistance, piezoelectricity and capacitance, and the acceleration generated is directly proportional to the changes of resistance, voltage and capacitance, and is collected by the corresponding amplification and filtering circuits to achieve the effect of monitoring the number of steps.
Simply put, by measuring the walking direction and acceleration force, the accelerometer can judge whether the equipment is in a horizontal or vertical position and whether the equipment moves, so as to realize the step counting operation. This principle is also used in the step counting of mobile phones.
Extended data
The structure of intelligent sports bracelet includes main control chip, auxiliary MCU (some need: _ED lamp, LCD display control), triaxial acceleration sensor (motion sensor), vibrator (vibration motor), Bluetooth power management chip, battery, LED array lamp (LCD screen), NF label and adhesive tape button. There will be a metal sensor where the bracelet touches the skin. _ し brand
People move regularly in the process of walking, and the data collected by the intelligent motion bracelet sensor is rough and has many burrs, so the error of single chip microcomputer processing will be great, so the data processing method is digital filtering. Single-chip microcomputer can be compared to the brain of acceleration sensor. Using digital equipment, through a certain algorithm, the signal is processed and the signal in a certain frequency band is filtered to get a new signal, which is called digital filtering.
Make the original data cleaner and clearer, and it is easier for MCU to judge the status. Digital filtering methods: amplitude limiting filtering, median filtering, arithmetic average filtering, etc. According to the algorithm, the interference is removed, which makes the data processing of single chip microcomputer more accurate. By adding a step counting algorithm, the basic step counting function can be realized.