The wearable device market took off, and the Bluetooth Smart detonated the design boom!

Benefiting from the new generation of Bluetooth low-power standards, it is now a good time for consumer electronics brands to develop wearable electronic devices such as smart watches. Related wireless chip developers are also competing to release Bluetooth Smart solutions for device devices. The new wireless design boom.

Bluetooth Smart is often recognized as the fourth generation of Bluetooth Low Energy technology, enabling low-power connections and low-capacity data transmission, enabling portable electronic devices to be limited to wireless data communications. Standard power consumption, size limitations, and design complexity issues allow products to maintain longer battery life and connect to the latest smartphones and tablets.

According to market research firm ABI Research, since 2014, wearable computing devices such as smart watches will explode and grow to 2018. Shipments will reach 485 million units, which is expected to drive huge business opportunities. .

Bluetooth Smart warms the Internet of Things boom

In order to compete for the wearable electronics market, the industry has begun to provide benefits for the connectivity, resiliency and power management of the Bluetooth Smart, or how the platform accelerates the hardware and software design of the wearable product, as well as the smartphone. How do users benefit from the emerging wearable device usage patterns and other directions to develop new products.

Bluetooth Smart is introduced with the Bluetooth 4.0 specification, which is 10 to 20 times lower than the previous version of the Bluetooth standard. Even if the radio is turned off most of the time, the product can still maintain the connection, and when the data is ready, Can be woken up immediately, this combination of features will provide a longer battery life.

Undoubtedly, power consumption has always been the biggest problem in the design of mobile devices, portable electronics, and the recent rise of wearable electronic devices. Therefore, the advent of Bluetooth Smart is expected to lead to major reforms in the field of consumer electronics. For example, new-style TV remote controls, watches, sports equipment, health and fitness sensors, and home automation products based on gesture control can use this technology to add equipment to the past without the need for low-power operation. Features and applications.

At this stage, Bluetooth Smart is driving the rapid development of various innovative "Appcessories". Bluetooth Smart Ready devices, such as Apple's iOS or software application interface (API), allow developers to create applications that integrate with Bluetooth Smart accessories in a standard way.

With the Bluetooth Smart, you don't have to wait for the development of standard file files, and you can develop applications and accessories without the approval of the Bluetooth SIG. Developers can take advantage of the rich user interface and convenient connectivity, while allowing compact hardware accessories to enjoy years of battery life, creating a new product that works perfectly with smartphones.

Table 1 lists a comparison of all Bluetooth core specification versions. In Bluetooth 4.0 (now known as Bluetooth Smart), the Bluetooth Technology Alliance emphasizes that the technology will make the use of the Internet of Things more feasible, enabling billions of home appliances and devices that require long battery life. Machines and so on join the interconnected world as early as possible.

The wearable device market took off, and the Bluetooth Smart detonated the design boom!

Integrated MCU design Bluetooth Smart grabs smart watch

Under the booming of the Internet of Things, smart watches are rapidly emerging. In addition to providing general timing functions, they can perform various tasks in digital processing, including math operations, games, multimedia messaging, call alerting, and proximity sensing. More complex applications. For smartphones, smart watches will become powerful accessories that provide more user information and interaction.

For example, a smart watch can show how many calories burned and the heart rate of the user before and after the exercise; or can find the user's smartphone through the positioning function, or even notify the wallet to be left at home. This shows that the possibilities that Bluetooth Smart can create are endless.

Figure 1 shows that the watch doesn't just interact with the phone, it can also interact with scales, pedometer sensors, thermometers, and other connected devices that provide valuable information, and can also be used as a game controller or remote control.

Smart watch interaction with multiple devices

Figure 1 Smart watch interaction with multiple devices


At this stage, the main components of the basic smartwatch include Bluetooth Smart chip, microcontroller (MCU) and liquid crystal display (LCD) panel, and may also have a speaker or a piezoelectric buzzer to provide a reminder function such as an alarm clock ( figure 2). Due to product size constraints, related chip players are beginning to move toward integrated chip design; for example, the British-based Cambridge Wireless Semiconductor (CSR) μEnergy CSR101x series of components can provide a single-mode Bluetooth low-power radio frequency (RF), integrated type The 16-bit MCU and 128K byte memory platform, the role of the system is equivalent to the heart of the system, controlling all system peripheral components.

Basic smart watch schematic

Figure 2 Basic smart watch schematic

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