When it comes to smart wearable devices, we immediately recall Apple Watch, AirPdos, Google Smart Glasses, and others. Market research firm Canalys released a global wearable wristband device market report for the second quarter of 2021. The shipment volume of this type of product reached 40.9 million units in this quarter, a year-on-year increase of 5.6%. The decline in the smart bracelet market began in the fourth quarter of 2020 and has continued until the second quarter of 2021, with shipments plummeting by 23.8% to 15.5 million units. The shipment volume of basic watches and smartwatches reached 25.4 million units, a sharp increase of 37.9%. Smart wristbands and watches accounted for 62% of global shipments of wearable wristband devices this quarter.
With the rapid increase in demand for personalized wearable fitness equipment, the precision of these devices has also increased. Although calculating walking steps is good, the solution people now want is not only to monitor activity levels, but also to monitor overall health status, heart rate, blood oxygen saturation, muscle oxygen, sleep, as well as emotional and mental health.
The Bluetooth Technology Alliance (SIG) has launched Low Power Bluetooth (BLE) technology as the lowest power consumption short range wireless communication standard. Like classic Bluetooth, BLE also operates in the 2.4GHz ISM frequency band with a bandwidth of 1Mbps. The most prominent features of BLE are as follows:
Low data rate - Ideal for applications that only require the exchange of state information. This protocol can suddenly transmit short messages within a fixed time interval, so the host is in low power mode when not sending messages. This protocol reduces the time required to establish a connection to data exchange to a few milliseconds. Each layer in the architecture has been carefully optimized to reduce power consumption, and the modulation index of the physical layer has increased compared to classical Bluetooth, helping to reduce sending and receiving currents. The optimized link layer enables fast reconnection to reduce power consumption. The controller can achieve various key tasks, such as establishing connections to ignore copying data packets, thus allowing the host to stay in low-power mode for a longer period of time.
It adopts a robust and reliable architecture similar to classic Bluetooth, supports adaptive frequency hopping, and has 32-bit CRC verification function.
The BLE protocol can be perfectly applied to wearable devices for the following reasons: ● The protocol has been carefully optimized to achieve ultra-low power consumption. Low power consumption helps reduce the size of small batteries, reducing product costs, size, and weight.
Due to the use of BLE smart ready hosts in smartphones, this protocol has been implemented.
Wearable devices exchange small amounts of sudden information over a long period of time.
Recommended solutions for smart watches
Tuyang Technology has launched the latest Bluetooth BLE5.3 smartwatch solution, which uses the Jerry Technology Bluetooth AC6323A smart chip. The watch can be connected to a mobile phone or tablet through Bluetooth to obtain weather, information, phone numbers, etc. The watch can also transmit monitored exercise and heart rate data to the phone in real-time, and provide users with health information in real-time, allowing them to face life and work with a positive and considerable attitude.
Bluetooth smartwatch solution features
1. Application Notification
The application notification function in the development of the Bluetooth smartwatch app refers to the watch's ability to remind phone calls, text messages, and third-party application notifications. Prevent users from missing any important information.
2. Exercise data and heart rate data
The function of exercise data and heart rate data is equipped with every Bluetooth smartwatch. Users can use this to record information such as walking steps, distance, heart rate, and calories burned. After recording this information, it can be fed back to the phone. Help users better understand their physical condition.
3. Weather management
Bluetooth smartwatches can provide weather change functionality. And it will automatically locate the city and provide weather warnings.
4. Watch alarm clock
The watch alarm function refers to the ability for users to set multiple sets of alarms on the app when using a smartwatch. When a specific time is reached, the watch will vibrate. Users can turn off the alarm clock by touching the video with their hands.
5. Bluetooth positioning
Bluetooth real-time positioning. In addition, there is a one click alarm function, which can provide protection for users, especially minors.
AC6323A Bluetooth BLE chip parameters
Chip model: AC6323A
RISC 32 bit CPU
DC-96MHz RAM
8KB I-cache 2way
1KB Rocache 1way
64 Vector interrupts
Working temperature: -40 ℃ to+85 ℃
Storage temperature: -65 ℃ to+150 ℃
Packaging: QFN20
More chip information
Application scenario:
Applications with strict requirements for power consumption control, such as high-end anti loss devices, electronic labels, etc.
Customers who have certain requirements for data transmission, such as transparent modules used for pan tilt selfies, hope that Bluetooth OTA is more reliable.
Convenient and flexible electronic label application. Such as product labels, asset theft prevention, and biological tracking.