Suggestions on crystal oscillator selection of intelligent wearable devices
Suggestions on crystal oscillator selection of intelligent wearable devices
Smart wear, also known as wearable device, is a general term for the application of wearable technology
in the intelligent of daily wear and the development of wearable devices.
In recent years, smart wearable products are welcomed by more and more consumers because of their portability,
intelligence and functional diversification, such as VR, smart watch, Bluetooth headset, smart bracelet, smart necklace, smart bracelet, clothing and shoes, etc.
As far as its portability is concerned, it cannot be separated from the charging function.
The first problem involved is that the capacity of the rechargeable battery is large enough,
and the electronic components must have the characteristics of miniaturization and low power consumption.
Only in this way can intelligent wearable products be standby and work for a long time.
Therefore, miniaturization and low power consumption are the best choice for crystal oscillator selection.
If intelligent wearable products want to realize their intelligence, it is obvious that wireless transmission function is essential.
At present, there are mainly two ways of data transmission: Bluetooth and WiFi.
For the two wireless transmission modes of Bluetooth and WiFi, the accuracy and stability of crystal oscillator are particularly strict,
because if crystal oscillator has problems such as large frequency difference and unstable operation,
it is bound to cause intelligent wearable products unable to connect to the network, that is,
Bluetooth and Bluetooth devices cannot be connected or repeatedly disconnected,
WiFi wireless network cannot be connected or repeatedly dropped, etc. This kind of poor functionality will seriously affect the customer experience.
General smart wearable products need to add GPS positioning function, such as children's smart wristwatch, elderly smart shoes, etc.
the frequency of GPS crystal oscillator is 26MHz, the higher the accuracy of this crystal oscillator, the more accurate the positioning.
The function of this crystal oscillator is very important, so we need to pay special attention to it.
Of course, if intelligent wearable products need time display function, they can't do without crystal oscillator 32.768KHz.
Similarly, the higher the precision of this crystal oscillator, the more accurate the time.