Smart bracelets rely on sensors to calculate the number of steps, such as:

1, three-dimensional rhythmic motion state sensor (triaxial acceleration sensor)

This kind of sensor can sense acceleration or vibration in different directions through capacitive accelerometer.

Three-dimensional rhythmic motion state sensors are divided into three-axis and six-axis sensors. Generally, three-axis sensors will record our data when we swing our arms, while six-axis sensors will improve the best data recording and accuracy of exercise by walking, running, cycling and climbing stairs.

2. Green photoelectric measurement method (photoelectric effect)

The green photoelectric measurement method consists of two light-emitting diodes with green wavelength and a photosensitive sensor, which is located on the back of the heart rate meter.

The principle is based on the fact that the blood in the blood vessels of the arm will change its density when it pulsates, thus causing the change of light transmittance. The LED emits light waves with green wavelength, and the photosensitive sensor can receive the light reflected by the arm skin and sense the change of light field strength and convert it into heart rate. And can continuously measure the heart rate, calculate the average heart rate and record the maximum heart rate.

Core Technology of Huawei 50 Waterproof Smart Bracelet

On May 26th, Huawei Smart Wear Series ushered in another heavy product-Huawei Sports Bracelet, which was officially unveiled at the Huawei nova2 conference. He Gang, president of Huawei's consumer business mobile phone product line, explained the products on the spot. This sports bracelet inherits the high quality made by Huawei, with fashionable appearance and rich color matching, and has five colors: black, red, blue, orange and green. As Huawei's first sports bracelet, it has the functions of 50 meters waterproof, heart rate monitoring and sleep monitoring. The GPS version is equipped with an independent GPS, which can record the movement track. The above functional design fully meets the needs of young people in different scenarios such as running and swimming. It is reported that Huawei Sports Bracelet will be officially launched on July 14, and the standard version and GPS version will cost 298 yuan and 388 yuan respectively.

Huawei's first sports bracelet was officially unveiled.

Fashion appearance: Handmade colors and textures come from famous designers.

With the rapid development of smart wearable devices, application scenarios are becoming more and more abundant. Based on this, Huawei spared no effort in the design of smart bracelets. In terms of appearance design, Huawei adopts the design concept of "natural harmony", combines square parallel lines with standard circular arcs, which brings a strong sense of science and technology, adopts precision processing technology and makes full use of internal space structure to make Huawei sports bracelets exquisite and durable.

In terms of the fuselage, each bracelet has been hand-made by 9 craftsmen and polished repeatedly for 9 times. The surface of the bracelet is silky and shiny, and it feels soft. The designers of Huawei FashionDesign family also performed magic, and tailored the texture and color matching for this product according to the latest fashion trends. The texture arrangement of the bracelet is inspired by Italian perforated leather, and the color is French high-grade gray tone, which highlights the wearer's style and temperament. Unique design, fine workmanship and fashionable and colorful color matching make Huawei sports bracelet both fashionable and practical, and meet the needs of young people who pursue individuality.

Powerful waterproof function: 50 meters waterproof, willful travel.

In order to create this wrist art, Huawei adopted complex and sophisticated processing technology. The bottom shell includes a heart rate measuring device formed by two-color injection molding, which ensures the seamless connection of the wrist contact surface. The face shell is also welded by high-frequency ultrasonic, and the whole bracelet is smooth and exquisite, impeccable. High-end technology makes the reliability and waterproof level of Huawei sports bracelet reach the industry-leading 50M waterproof level. This means that Huawei sports bracelets can be worn in swimming, hand washing and other scenes. Under normal circumstances, they don't need to be removed all day. Even after swimming in seawater, they only need to be washed and wiped clean with clean water. For young people who like water sports, this bracelet will be the finishing touch of swimsuit modeling.

Huawei sports bracelet 50M waterproof.

Independent GPS+ running data analysis is a key to success.

In order to allow users to record their own trajectory during running and get rid of the shackles of mobile phones, Huawei Sports Bracelet has specially launched a GPS version. Built-in GPS allows Huawei Sports Bracelet to not only realize independent GPS positioning, record movement trajectory, but also view data such as pace and distance in real time.

The heart rate monitoring function of the bracelet is another excellent assistant for running. The bracelet adopts the innovative PPG module, and the 24-hour heart rate tracking function is comparable to the heart rate band. During exercise, heart rate monitoring can not only remind users of the exercise heart rate interval and understand the exercise state, but also receive heart rate warning when the heart rate is too fast to ensure the safety of exercise.

Huawei Sports has a built-in independent GPS version.

Breathing, sleeping, full-screen coverage and endurance double upgrade

Huawei Sports Bracelet has also adopted a number of industry-leading technologies in health functions. The bracelet can guide the user to carry out breathing training, relax tense muscles, release the pressure of life, and make the mood comfortable and calm. At the same time, Huawei has been certified as HUAWEITrusleep by CDB Center of Harvard Medical School, and employees are not allowed to use it.

Huawei's sports bracelet is equipped with a large screen, which not only makes the operation of the bracelet more convenient, but also allows the bracelet to display more information during caller ID and message synchronization. At the same time of the big screen, the endurance of Huawei sports bracelet has also been improved, and it can be used normally for about 2 1 day on a single charge, reaching the industry leading level.

Huawei sports bracelet can be used normally for about 2 1 day on a single charge.

Fashion sports accessories: Yan value off the charts is awesome.

Not long ago, Huawei released HUAWEIWATCH2, which was well received. Its mobile phone information synchronization, speed monitoring, continuous heart rate monitoring and other functions are favored by consumers. Huawei sports bracelet is the same as HUAWEIWATCH2, which has similar information synchronization function and heart rate monitoring function. For young people who follow the trend, like sports and pay attention to health, such a bracelet with value out of the chart, powerful function and superior cost performance is undoubtedly the most worthwhile fashion sports accessory this summer.

Huawei Sports Bracelet will be fully sold in major e-commerce platforms such as Huawei Mall and authorized retailers such as Huawei authorized experience stores on July 14.

Smart bracelets use Internet of Things technologies, including sensing technology, cloud management technology and big data analysis technology. Internet of Things technology can refer to the Internet of Things platform-Electronic People Network.

What is the working principle of a smart bracelet?

With the whirlwind of smart wearable devices blowing all over the IT world, Google Glass and smart watches continue to be exposed, and the attention is extremely high. The smart bracelet seems to be on fire. Many people must have questions. Seeing these smart watches and smart bracelets sold in the market, they all say that they can detect sports status and sleep through Bluetooth. How do they work? How to realize the function? Let me give you a detailed introduction.

What is the working principle of a smart bracelet? 1

First, the principle of smart bracelet

The motion monitoring function of smart bracelet is realized by gravity acceleration sensor. Gravity sensor is a very mature technology, and mobile phones have been used for a long time. For example, the screen flipping function of smart phones is realized by sensors. Sensors get some basic data by judging people's movements, and then combine the basic information of personal signs input by users to get personalized monitoring data for individuals according to some specific algorithms, such as steps, distances, calories consumed, etc., so as to judge the frequency and intensity of exercise. Because everyone's exercise has different effects with different physical signs, users need to input their own gender, age, height, weight and other information in the APP before using the bracelet to monitor, and the information will be automatically synchronized to the bracelet, and the movement will be monitored through sensors, and finally the function of motion monitoring will be realized through a specific algorithm.

Sleep monitoring is also achieved by the same sensor technology. According to brain wave signals, people's sleep can be divided into five stages: falling asleep, shallow sleep, deep sleep and rapid eye movement (REM). People's brain waves can change rapidly at different stages. Interestingly, the gravity acceleration sensor does not directly detect brain waves, so it judges which stage of sleep is based on the amplitude and frequency of people's movements during sleep. The smart alarm clock function of the bracelet will wake the user during the rapid eye movement period. "Because during the rapid eye movement period, sleepers will have high-frequency and low-amplitude brain waves similar to those when they are awake, and they are more likely to be awakened. If they wake up at this time, they will feel.

Second, what is the working principle of the smart bracelet?

Heart rate: there are two electrode pads (ECG principle), which can be used to check the ready-made scheme online;

Respiratory rate: three-dimensional acceleration sensor (vibration principle) can be used, but there is no ready-made scheme, so we need to make our own model, and there should be a better filtering algorithm, which is very promising;

Blood pressure, so simple, I don't know what to do.

Difficulty: But the difficulty of this product lies in how to collect all kinds of data with a simple product without disturbing users. The data here involves blood pressure, blood sugar, blood oxygen, pulse and other data. Our normal process of measuring these data is to draw blood to measure blood sugar and oxygen content, to measure body temperature with a thermometer, and to measure blood pressure with compressed blood vessels.

This problem is actually a problem faced by many smart devices now. The sports bracelet still stays in the function of obtaining position information through the gyroscope and analyzing various complex States of the human body from exercise to sleep, and the accuracy of the data is limited.

Imagine this:

1, through the principle of reflection, the oxygen content of human red blood cells is detected.

2. By detecting the pulse conduction rate and calculating the time difference between ECG detection and pulse detection, blood pressure information can be obtained.

3. Through internal and external temperature induction, more accurate human body temperature value can be obtained.

4. After detecting metabolic heat, blood oxygen saturation and blood flow velocity, the blood glucose concentration was calculated by metabolic heat integral method.

The biggest breakthrough of this principle is to realize the non-invasive collection of sign data with little interference to people. The changes of blood pressure, blood sugar and body temperature are very helpful for people with hypertension, diabetes and pregnant women to test their physical data. Guo Hui said that this principle has passed the theoretical certification and the hardware design is being planned. Of course, he also hopes to have more investment to promote the development of the project. At present, the bottleneck of smart devices is mostly information acquisition. If Guo Hui's team can realize this idea, it won't be a problem to make bracelets and watches.

The core is a 3-axis gravity acceleration sensor, and its output value is converted into living momentum by algorithm. The basic principle is to calculate the amount of work done to overcome gravity and inertia, so it is necessary to bring in weight to participate in the calculation. Now all bracelets, trackers, etc., regardless of brand model, are the weights set by users from the outside when synchronizing. Formula or something can refer to some papers of physical education major. In addition, the bracelet has a special feature that it can only stay on one hand, so compared with the ordinary preset user who will wear a tracker at the center of gravity of the human body, the algorithm is not feasible and needs to be corrected by a special algorithm. The specific algorithm is a trade secret.

Basically, it is a three-axis accelerometer, and then an algorithm is used to judge the number of steps of people. Algorithm is the core, I can't tell you.

What is the working principle of the smart bracelet 2?

First of all, briefly introduce the smart bracelet.

A smart bracelet is a wearable smart device. Through this bracelet, users can record real-time data such as exercise, sleep and diet in daily life, and synchronize these data to iOS or Android devices to play a role in guiding healthy life through data. The smart bracelets that attract attention mainly include Nike+Fuelband, FitbitFlex, JawboneUp2 and several domestic brand products that follow up.

"Google Glass" is not on sale yet, and "Smart Bracelet" is coming. When traditional e-commerce is still "true" to the price of a home appliance, Yi Xun. Com, a subsidiary of Tencent e-commerce, has taken a different approach and shifted its focus to the joint development and introduction of high-tech products. Since yesterday, the smart bracelet "Jawboneup" has been sold exclusively in China, becoming the first e-commerce company in China to officially enter the Internet "wearable smart device" market.

It is reported that the "Jawboneup" smart bracelet launched by this network is a very popular wearable smart device on the market. It is widely welcomed by white-collar consumers.

Second, the structure of the smart bracelet

The main body of the smart bracelet is generally made of medical rubber and memory rubber.

Natural non-toxic, high-grade design, fashion generous, both the function of sports health secretary, but also the function of fashion accessories, streamlined garlands, and diverse colors.

Silver-plated metal caps at both ends are very suitable for wearing, which is different from traditional bracelets with locks or buttons.

The smart bracelet has a built-in lithium battery with a battery life of 10 days, a vibration motor and a motion-sensing accelerometer. The silver cap at the end of the bracelet is a button to change the settings, and the other section is a 3.5 mm plug connected to the mobile phone.

Third, the function of the smart bracelet

This design style of smart bracelet is quite attractive to users who are used to wearing jewelry. More importantly, the design style of the bracelet is versatile. Moreover, although the small hand ring is not big, its function is still relatively powerful. For example, it can be said to be an advanced pedometer, which has general functions such as counting steps, measuring distances, calories and fat, as well as special functions such as sleep monitoring, advanced waterproof, Bluetooth 4.0 data transmission and fatigue reminder.

Its built-in battery can be used for 10 days, the vibration motor is very practical, and the simple design style can also play a decorative role in jewelry.

Take sleeping as an example. Set Jawboneup to sleep mode before going to bed, and get up the next day and synchronize with iPhone device, so you can see your sleep time, waking time, deep sleep/light sleep, overall sleep quality and other information. For people who lose weight and exercise, the "JawboneUP" smart bracelet is a responsible personal trainer, which can tell you the daily exercise path, calorie consumption and calorie intake. You can also set exercise goals, such as how many steps to take, how many calories to burn, and so on. It will also show the completion rate of exercise in real time, and exercise weight loss can be quantified, which is a great boon for those who can't persist. The smart bracelet has advanced waterproof function, and can swim in shallow water or rivers within the range of 10 meter, which overcomes the defect that the traditional pedometer cannot track swimming and is more widely used.

The smart bracelet also has a social network sharing function. For example, users can share sleep quality, diet, exercise and emotional records by binding Facebook or Twitter. For the elderly, it is also a patron saint. Through the built-in GPS connector, you can inform the relevant hospital or family members of your physical condition and location at any time.

Fourth, the working principle of the smart bracelet

Covered with waterproof rubber material one meter deep, it is said to be skin-friendly and comfortable to wear. Provide a variety of colors to choose from, S, M, L three sizes also meet the needs of different people. 3.5mm headphone jack can not only charge, but also synchronize data with mobile phone. It can last 65,438+00 days after being fully charged. Two pieces of silver-plated metal caps and Jawbone logo, accompanied by the flashing of breathing light in different states, make the whole bracelet look very fashionable and exquisite.

Specially configured mobile phone application can easily check your daily exercise data (including exercise time, kilometers and steps walked, calories burned, etc.) by connecting to iPhone. ) and sleep data (total sleep time, wake-up time, wake-up times at night, etc. ). You can also input dietary data through the mobile phone, and the bracelet will give nutritional information according to the type of food for users' reference and adjust their eating habits.

What application of data acquisition technology is reflected in the application development of smart bracelet?

The application and development of smart health bracelet embodies the application of "sensor" data acquisition technology; The smart bracelet is a wearable smart device; Through the smart bracelet, users can record real-time data such as exercise, sleep and some diets in daily life, and synchronize these data with mobile phones, which plays a role in guiding healthy life through data.

The application and development of smart health bracelet embodies the application of "sensor" data acquisition technology.

Application of Intelligent Sports Bracelet

Lead: With the development of digital technology, numbers have been integrated into us. With the advent of the intelligent era, the application of intelligent electronic products in people's lives is becoming more and more popular, and the intelligent products are constantly updated with the continuous updating of technology and the growing demand of users. After smart wearable devices enter people's field of vision, smart sports bracelets are widely loved by consumers because of their simple operation and convenient carrying. What is the application of smart sports bracelet under popular science?

Application of Intelligent Sports Bracelet

The specific application of intelligent sports bracelet is reflected in the following aspects:

1. The smart bracelet is not only a smart device, but also an attractive accessory for users who are used to wearing jewelry.

2. pedometer. Smart bracelet is an advanced pedometer, which can not only accurately calculate the user's movement steps through vibration induction, but also accurately measure the user's movement distance, calorie consumption, fat consumption and so on.

3. alarm clock. Smart bracelet can not only play the role of a general alarm clock, but also remind users to rest by setting fatigue time.

4. Remote control. With the support of software, remote control can be realized through smart bracelets. Because it involves multi-brand collaboration, this feature has not yet appeared on the smart bracelet.

5. Through its built-in GPS connector, the user's physical condition and location information can be sent to family or hospital at any time. This function is very useful for elderly users.

6. The smart bracelet has waterproof function. Even if you swim with it, you don't have to be careful to be damaged. The pedometer has no waterproof function.

7. Health management. In this respect, the smart bracelet is more like a private health housekeeper. Whether it is daily step counting, sleep monitoring and exercise heart rate monitoring, smart bracelets accurately monitor these data through equipment to protect the health of users.

8. Answer the phone. Answering the phone is a standard for smart watches. You don't need to take out your mobile phone from your pocket to answer the phone, which can be of great use in extremely crowded places. At present, smart bracelets with telephone answering function are rare.

9. Sleep monitoring. Users can set the smart bracelet to sleep mode before going to bed, and synchronize with the smart phone after getting up, which can intuitively display the user's sleep time, waking time, or deep sleep/light sleep and overall sleep quality.

With the continuous upgrading of technology and the increasingly diversified and personalized needs of users, I believe that the functions of smart sports bracelets will be richer and more powerful in the future, which will better meet the growing needs of users.