Wearable device technology

Intelligent wearable devices involve a wide range of technologies, including sensing technology, display technology, chip technology, wireless communication technology, data computing and processing technology, power endurance technology, data interaction technology, etc.

1. Sensing technology

Sensor technology is used to complete physiological monitoring (such as heart rate, blood pressure, blood oxygen, blood sugar, pulse, sleep quality, etc.), environmental perception (such as temperature, humidity, voltage, light intensity, air quality, position and pressure, etc.), voice detection and recognition, gesture recognition, eye tracking, etc. The most widely used sensor types are gas sensor, light sensor, acoustic sensor, chemical sensor, etc.

2. Display technology

Common display technologies in intelligent wearable devices include thin film transistor LCD, active matrix organic light-emitting diodes, organic light-emitting diodes, light-emitting diodes and electronic paper. Here are three main wearable display technologies.

Micro display: such as silicon based liquid crystal, MEMS/digital light source processing, laser scanning, etc.

Flexible display: flexible screen that can be bent.

Transparent panel: Transparent display has been applied to public signage and window display, and can be applied to personal wear by improving penetration and resolution.

3. Chip technology

Smart wearable device chips can be divided into three categories.

The chip with the existing mobile phone processor as the core: the advantage is to effectively use the existing platform to accelerate development, and the chip produced is very powerful.

Products based on MCU.

Chips specially designed for intelligent wearable devices, such as Intel Edison dual core chips, support Android system on one part and real-time operating system on the other.

4. Operating system

There are three main types of operating systems used by intelligent wearable devices.

Embedded real-time operating system (RTOS): It has the characteristics of low power consumption and single task.

Operating system modified based on Android platform.

Proprietary operating system.

5. Wireless communication technology

The data communication and information sharing between intelligent wearable users and users, and between intelligent wearable devices and other electronic devices are more suitable for using low power short-range wireless communication technology. The wireless communication technologies adopted mainly include WLAN, Bluetooth, etc. The synchronization of data adopts private protocol. Many mobile phones have built-in Bluetooth function, and wearable devices can be connected to smart phones through Bluetooth; The data in the wearable device is sent to the smartphone through Bluetooth, which will not consume too much power. Smart wearable devices can also transmit data through 3G, 4G, 5G and other mobile communication technologies.

6. Data calculation and processing technology

Human computer interaction, including text display, data analysis, voice feedback, virtual images, etc., has been analyzed by the content computing system. Augmented Reality (AR), Virtual Reality (VR), AR combined with VR and other real-time content computing and large environment awareness analysis. Data computing processing technology is required for various measurement, analysis and calculation, such as blood pressure, blood oxygen, heart rate, and pulse. Cloud computing, big data and other related data processing technologies can send the data collected by intelligent wearables to the database in a timely and accurate manner, and make effective statistics and analysis through the data in the database to provide users with suggestions.

7. Data interaction technology

The value of intelligent wearable devices is mainly reflected in software and data service functions. There are two modes of interaction between intelligent wearable devices and cloud platforms: one is that intelligent wearable devices have communication capabilities and directly interact with cloud platforms; The other is that wearable devices do not have communication capabilities and interact with cloud platforms through mobile phones.

8. Power endurance technology

All kinds of intelligent wearables need to solve the problem of power life. The main solutions are as follows: First, reduce the power consumption of chip, screen and terminal interconnection, and find a balance between the overall performance and power consumption; Second, continue to increase battery capacity or find new storage materials; The third is to alleviate this problem through wireless charging, fast charging, solar energy and biological charging and other technologies.