According to the report of e-enthusiast.com (Wen / Mo Tingting), in this year’s development trend, it can be clearly seen that in addition to smart watches, TWS headphones, smart bracelets and other common smart wearable devices, smart glasses and smart helmets have also joined the “army” of smart wearable device iteration. At present, smart wearable devices have moved from low-power performance “roll” to health function.

New aspect of smart wearable device upgrade: Huawei’s patent for intelligent eye mask for epilepsy detection

On May 10, Huawei disclosed the patent of “intelligent eye mask, terminal equipment, health management method and system”. The patent introduces that the intelligent eye mask is equipped with a signal acquisition unit, a processing unit and an EEG electrode. The signal acquisition unit can detect the EEG signal corresponding to the EEG electrode, the wearer’s heart rate signal and the head motion signal; The processing unit can detect epilepsy according to EEG signal, heart rate signal and head motion signal. From the Patent Description, it is not difficult to find that this will be an intelligent eye mask that can provide epilepsy monitoring. Huawei mentioned in the patent abstract that “the technical solution provided by this application can realize the monitoring and management of epilepsy and improve the accuracy of epilepsy detection results”. Tianyan search shows that the application time of this patent is November, 2020. The launch date has not been announced yet.

Huawei smart eye mask patent (source: tianyancha)

Health monitoring has become a new growth point of intelligent wearable devices. The iteration of intelligent wearable devices is affected by two factors: one is the iteration of AI algorithm, sensor and processor chip technology; On the other hand, affected by the COVID-19, consumers pay more attention to their own health. Therefore, more and more brand manufacturers update smart watches, TWS earphones and even smart eyewear devices. They add heart rate, ECG and oxygen saturation monitoring functions to smart watches. TWS earphones can also monitor heart rate and body temperature. Among the smart eye wearing devices, in addition to the Huawei smart eye mask mentioned above, the industry has launched a number of smart glasses equipped with AI voice function, navigation, meeting recording and other functions. For the iteration direction of smart glasses, more and more manufacturers choose to integrate more routine functions such as AI voice and navigation. Since smart glasses are more sensitive to weight and cannot integrate different sensors like smart watches, they may be selective in terms of functions in the future.

Support more high-performance peripherals and master chip packaging technology iteration

In the iterative process of intelligent wearable devices, the chip determines the computing speed and power consumption of the device, and the processor is more important. Taking smart watches as an example, Samsung launched the industry’s first wearable chip using 5nm EUV process – exynos w920 in 2021. It is equipped with two cortex-a55 cores and a mali-g68 GPU for high-performance processing and graphics processing. In addition, it is internally integrated with an LTE modem. In terms of the space of smart watches, exynos w920 adopts the fan out panel level packaging technology, integrating exynos w920, power management IC, lpddr4 and EMMC. At present, this chip has been installed on the galaxy watch4. In terms of health monitoring function, it is also equipped with a human component analysis sensor. The main control chip of amazfit yuei gtr3 launched by amazfit huami in 2021 adopts NXP i.MX RT500 series and 28nm fd-soi process, which not only improves the main frequency performance of the processor, but also controls the power consumption. In addition, it also integrates a 2.5D GPU acceleration unit to support more peripherals. It is noteworthy that yuewo gtr3 is the first smart watch equipped with Zepp OS. In terms of health monitoring function, huami’s 6-channel third-generation biotracker PPG biological tracking optical sensor is adopted.

NXP i.MX RT500 series (source: NXP)

In addition to the above master chips, there are also ambiq micro’s Apollo 3 blue series, Qualcomm 4100, dialog’s da14695, and so on. In the future, the health monitoring function will become a selling point, which will challenge the storage space and internal structure space of intelligent wearable devices. From the perspective of Samsung’s exynos w920 and NXP’s i.MX RT500, the processor is iterating towards supporting more peripherals and optimizing packaging technology. When the demand for health monitoring function of intelligent wearable devices continues to increase, in addition to the iteration of chip technology, there is also the iteration of AI technology. For example, Huawei and anbiping have cooperated to build a large model of histological AI pathological diagnosis. Under the joint action of algorithm and chip technology, the accuracy of intelligent wearable devices will be further improved. It is advisable to look forward to the medical level progress of smart wearable devices before Huawei launches intelligent eye masks that can monitor epilepsy.

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