Nordic low-power Bluetooth boosts wearable devices for real-time interaction

Emerging mobile virtual reality (VR) is hot, and motion controllers for this type of application are also attracting attention. For example, Ximmerse Guangdong Virtual Reality Technology has introduced two solutions: three-degree-of-freedom (3DoF) motion controller Ximflip and location Tracking features a six-degree-of-freedom (6DoF) mobile VR suite for Ximneon. Ximflip uses Nordic's award-winning nRF51822 low-power Bluetooth system-on-chip (SoC), and Ximneon is powered by Nordic 's nRF52832 SoC.

Ximflip is compatible with most mobile VR headsets, and when paired with a user's smartphone, users can perform various operations in VR games based on smartphone applications, such as pointing, selecting, grabbing, paddling and throwing.

Wendell Boyd, Sales Manager, Asia Pacific, Nordic Semiconductor

In addition, smart watches and bracelets are also popular products. For example, the "H03 Pro-N" smart sports watch from Trasense International combines the functions of both smart watches and sports watches. The watch is capable of measuring distance, number of steps and calories burned, as well as providing call alert, call rejection, smart alarm and remote control smartphone camera; while Shanghai Zhixiang Technology's BeaucoolCarFit bracelet not only reports health indicators, but also integrates Electronic payment and remote control of multiple car functions. Both products use the nRF52832 SoC for low-power Bluetooth wireless connectivity.

The core components of these devices include accelerometers, gyroscopes and touchpad sensors, as well as low-power Bluetooth system-on-chip (SoC). These SoCs integrate CPU, multi-protocol RF and flash memory to support a variety of complex algorithms and interact with VR or other applications via a low-power Bluetooth wireless connection. The characteristics and trends of VR controllers are powerful computing functions, low-power network connections, smaller size and lighter weight. In addition, the trend of smart watches and bracelets is low-power network connections, longer battery life, smaller size and lighter weight, and lower cost.

Nordic's solutions for this type of product include the nRF52832 low-power Bluetooth SoC, a member of Nordic's sixth-generation ultra-low-power (ULP) wireless connectivity solution. The SoC is equipped with Nordic's S132 protocol stack, which is a Bluetooth 4.2-enabled RF software stack for building advanced low-power Bluetooth applications. The S132 protocol stack can run low-power Bluetooth characters such as central, peripheral, broadcast, and observer simultaneously, supporting up to eight simultaneous connections.

In addition, the nRF52810 Bluetooth Low Energy SoC is the most cost-effective single-chip Bluetooth 5 solution on the market. It is a "subset" device for Nordic Semiconductor's high-performance nRF52 series, enabling the most cost-conscious mass production applications to benefit from Bluetooth. 5 key performance advantages, including: 2 times the data bandwidth of low-power Bluetooth 4.2 (2Mbps); and broadcast packet extension with 8 times broadcast performance, can increase the broadcast packet payload to 251 bytes to achieve More efficient data transfer, especially in beacon applications. Target application examples include Internet-connected sensors and beacon components that make up the Internet of Things (IoT), low-cost wearables , low-cost wireless mice and keyboards for computers and tablets, toys, disposable medical monitoring devices, and basic RF remote controls. Device.