“The car inventor, reinventing the car.” This is the advertisement for the new generation of Mercedes-Benz cars. It is also the moment when wearable devices wait for "reinvention". According to market research firm Canalys, shipments in the wearable market are expected to grow from 46 million in 2014 to 285 million in 2018. And the wireless connection technology in which it competes is the new and old confrontation. Who is the "king" of the next generation?

ABI Research predicts that by 2015, shipments of Bluetooth Smart, including smartphones and tablets, PCs, home appliances, and industrial sensor networks, will exceed 700 million units.

Bluetooth Smart takes the opportunity to take off

A network generated by Bluetooth Smart wireless technology enables wearable devices to access applications through smartphones or cloud devices.

"The driving force behind the rise of wearable electronic devices is the prevalence of smartphones, and the personal network generated by Bluetooth Smart wireless technology allows users' wearable devices to access applications through smartphones or cloud devices." TE Consumer Electronics Eric Braddom, director of global market strategy, said.

Bluetooth Smart technology is based on Bluetooth 4.0, the most important sign is ultra low power consumption. In addition, low-cost and cross-vendor interoperability, 3 milliseconds low latency, ultra long distance of more than 100 meters, AES-128 encryption and many other features have greatly expanded the application range of Bluetooth technology. The popularity of Bluetooth Smart Ready devices such as smartphones and tablets has once again spurred its potential.

Svenn-Tore Larsen, CEO of Bluetooth Smart Nordic Semiconductor, said that by the beginning of 2014, most smartphones on the market are expected to support Bluetooth Smart Ready. Coupled with Apple's iOS, Google Android 4.3, Microsoft and other announcements will support wearable Bluetooth Smart technology, Bluetooth Smart Ready will drive the next wave of Bluetooth Smart device spurt growth, including pedometers, heart rate monitors and other sports and fitness equipment And smart watches, etc. According to ABI Research, shipments of the Bluetooth Smart market, including smartphones and tablets, personal computers, home appliances, and industrial sensor networks, will exceed 700 million units by 2015.

At present, more and more chip manufacturers such as TI, Broadcom, Nordic, CSR, etc. are pushing the Bluetooth 4.0 chip to show the unlimited potential of this market.

Low-power Bluetooth and ANT+ integration coincides with the time

A solution that integrates ANT+ Bluetooth low-power wireless technology is imperative.

Although the Bluetooth Smart is expanding, it is a fact that ANT+ technology based on the 2.4GHz WSN protocol is popular in the consumer healthcare, sports and healthcare and smartphone application accessories markets. Most sports and fitness markets are fully supported by ANT+. The products of technology are dominant.

With the rapid penetration of Bluetooth in smart terminal applications and in the wearable device market, customers also need to make "fish and bear's paw" in two ecosystems, thus "compating" two previous wireless technologies. Or it will clear the last obstacle to its great development. Stele Steel Ytterdal, Director of Sales and Marketing, Nordic Asia, said: "ANT+ is a proven technology and has built a huge ecosystem, and major consumer electronics companies around the world are rapidly adopting Bluetooth 4.0. Integrating ANT+ with A solution for Bluetooth low-power wireless technology is imperative."

Nordic Semiconductor's nRF51922, the world's first multi-protocol SoC solution for ANT+ and Bluetooth low power, came into being. "This SoC has achieved new breakthroughs in architecture, power consumption, and software. By using the ARM Cortex-M0, it has increased processing power by 10 times and achieved an average current drop of up to 50% in current, thereby reducing At least 30% power consumption. In addition, the SoC features a new software architecture that delivers unprecedented flexibility, simplicity, and code security while reducing risk,” said Thomas Embla Bonnerud, director of product management at Nordic Semiconductor.

Multiple innovations help low power consumption

Low power consumption is critical, and lower power consumption should be achieved through architectural innovations and technological innovations.

In the field of wearable devices, ultra-low power processors are essential devices. "It is necessary to use a very small battery to supply, but also to ensure long-term standby, so choose ARM's Cortex-M0." Thomas Embla Bonnerud pointed out.

At the same time, "innovation" in the existing chip architecture to achieve low power consumption is also inevitable. According to Thomas Embla Bonner, Nordic's ultra-low-power wireless technology reduces power consumption by keeping peak currents low and keeping radio transmission and reception time to a minimum. These improvements can reduce power consumption by up to 50%. It is reported that Dayton has adopted Nordic's Bluetooth low energy and ANT+ solutions to launch a series of sports and fitness accessories.

In addition, a new generation of wearable devices has revolutionized or turned on the "Batteryless" mode. "In addition to battery power, there are now many different applications that are beginning to consider the direction of no battery, such as next-generation energy harvesting technology," said Haviv Ilan, vice president of Texas Instruments and global wireless connectivity business. . TI is also introducing a full range of products including boost chargers and DC/DC converters for power acquisition, enabling battery-free operation in applications where it is difficult to obtain power such as wearable devices.

Who is in the limelight is still unpredictable

With low-power WiFi technology, wearable devices can connect to the Internet actively without the need for transit.

Although it is still seen that Bluetooth 4.0 is on the market for wearable devices, it does not mean that other technologies will have a chance. Haviv Ilan analysis: "It is still difficult to conclude that low-power Bluetooth will be popular on wearable devices. First, the wearable device itself does not have a mature business model; second, low-power Bluetooth is required to pass through a smartphone or tablet. Computers and the like can be connected to the cloud/big data, and they cannot actively connect to the Internet."

For other technologies that are "popular" on wearable devices, Haviv Ilan is optimistic about low-power WiFi technology. "Low-power WiFi technology is expected to appear next year, or it can change the current situation. Because wearable devices directly use low-power WiFi technology, these products can actively connect to the Internet, and do not need a mobile phone to transfer. This is the real Internet of Things.” Haviv Ilan mentioned, “TI has a low-power WiFi solution in trials, and two AA batteries can stand by for 600 days.”

In addition to independently developing the Bluetooth 4.0 chip, it can be integrated into the SoC or can crack the "application" bottleneck, and become the "joint" of the market. MTK, Qualcomm, TI and other chip manufacturers are all making efforts. At present, TI has taken the lead in launching the device-side Combo chip development solution. It is expected to launch Bluetooth 4.0 plus WiFi Direct or Near Field Communication (NFC) products in 2014. A new round of old and new alternations will be staged again.

expert's point

Haviv Ilan, vice president of Texas Instruments and general manager of global wireless connectivity: IoT technology focuses on low power and security

In the future, the Internet of Things will drive tens of billions of electronic products connected to the Internet. It is estimated that by 2020, 50 billion electronic products will be connected to the Internet.

Need to pay attention to: First, in the Internet of Things market, it is not feasible to choose a single technology to meet the requirements of all Internet of Things. Because in each different application, there may be different requirements for the connection part, and users need different technologies to meet their needs. There are a variety of wireless connectivity technologies, Zigbee, sub-1G technology, Bluetooth low energy, PLC carrier communication, EtherCat, NFC, etc. will all be useful. In the future, these technologies will still coexist, and there will be no result of which one is completely replaced, because each technology has its best use scenario. Second, in IoT technology, low power consumption is an important part. Third, security is also important, from the bottom to the middle of the gateway, and then to the high-end cloud should consider this issue. Not only does it need to start with IC design to enhance security, but also provide control and privacy features in the cloud or gateway to improve overall security. Fourth, suppliers need to provide corresponding development tools and software, technical support, etc., so that customers can simplify the design and easy to develop. A complete IoT requires various components such as MCUs, processors, RF, sensors, AD/DC, battery management ICs, and devices such as multicore DSPs in the cloud.

Eric Braddom, Global Marketing Strategy Director, TE Consumer Electronics Division: Wearable devices face technical and non-technical challenges

Today, some analysts believe that fitness tracking is the largest application area for wearable devices. However, in my opinion, if the watch can measure blood pressure and blood sugar, then this market has unlimited prospects. Imagine if the device can tell temperature, pulse and other important physical indicators every few seconds, how many new opportunities will it bring to future healthcare applications? There is no need to go to the hospital for a doctor to do a physical examination. Similarly, doctors can use the information collected by these wearable devices to improve the diagnostic level and efficiency.

On the other hand, according to current market forecasts, although Augmented Reality Glasses may not achieve explosive sales growth in the next few years, I personally are optimistic about its development space and new applications.

The market for wearable devices is about to break out, but it also faces corresponding challenges. One of the biggest challenges is ease of use. I have tried many wearable devices, but none of them can be easily configured or used. However, as we have seen before all the giant consumer electronics companies do, if a company can adopt cool technology and make it easy to use, it will have huge market potential. For example, Apple, as a thick and thin developer, is popular in a highly competitive market because its products are a perfect blend of cool design and ease of use.

For most of the emerging wearable devices on the market, I believe that their potential is unlimited, but the functionality of these devices needs to be gradually improved. In addition to technical challenges, non-technical issues such as personal privacy (worried about secret recording) or security (interference caused by interference) will also hinder the further development of wearable devices. In addition, the trend toward miniaturization of wearable devices will present new challenges for solution providers to more effectively integrate all components. Wearable device products will also trigger new component requirements, including miniaturization, flexible design, sensor integration, and more.

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