The application of Flex PCB in monitoring rings has promoted the development trend of miniaturization, intelligence, and multifunctionality, making it a key example of flexible PCB applications in wearable devices. Among these innovations, Smart ring flexible PCB plays a pivotal role, marking it as one of the keys to the technological advancement of this field.
The application of flex PCB boards in detection rings is mainly reflected in providing power supply and data transmission functions for the rings. With the miniaturization of electronic components, smart rings have gained great popularity. These devices are usually equipped with sensors and wireless connections, allowing users to stay connected and seamlessly monitor their health and lifestyle. For manufacturers seeking advanced solutions, choosing a reliable flex PCB vendor is crucial to ensuring the performance and durability of such innovative devices.
Application of flexible PCB in smart ring
Power supply and data transmission:
Flexible circuits serve as a medium for power supply and data transmission in the ring, connecting sensors and other electronic components in the ring. Collaborating with a reliable flex PCB vendor ensures high-quality circuit integration, enhancing the performance and durability of the ring's electronic systems.
Sensor integration:
Flex board circuits enable a variety of sensors (such as inertial measurement units IMUs and photoelectric volumetric pulse waves PPG sensors) to be integrated into the ring to achieve functions such as health monitoring and motion tracking. During the development phase, working with a well-crafted flex circuit prototype allows designers to optimize sensor performance and ensure seamless functionality.
Design and customization:
The flexibility and bendability of printed circuit boards allow the ring to be designed to be more compact and comfortable, while supporting customization according to specific needs.
Design and manufacturing process
High-density wiring:
Due to the limited space of the monitoring ring, the wiring of Flex PCB usually adopts laser drilling and ultra-fine lines (<50µm) to achieve signal connection between complex functional modules.
Multi-layer flexible circuit:
By stacking multiple layers of flexible circuits, the sensor interface, power line and signal line are separated to reduce interference and improve reliability.
Micro-component packaging
Flex PCB supports a variety of advanced packaging technologies:
Chip-scale packaging (CSP):
Directly install the chip on the circuit board to reduce the occupied space.
Flip chip technology (COB):
Further reduce the volume and improve thermal performance.
Surface treatment:
Adopt gold plating, OSP (organic protective film) and other processes to enhance the solderability and anti-oxidation ability of Flexible printed PCB.
Specific application of Flex PCB in monitoring ring
Signal acquisition and sensor integration
Flex PCB provides electrical connection and mechanical support for various sensors. The following are typical applications:
Optical heart rate monitoring: Collect blood flow pulsation signals by integrating photodiodes and LEDs.
Blood oxygen saturation measurement: Red light and infrared light sensors are installed on printed circuit board to calculate SpO2 values.
Body temperature monitoring: Thermistors are embedded in circuits for high-precision temperature measurement.
Data processing and wireless communication
Smart ring flex PCB can integrate low-power processing units (such as MCU or SoC) to process collected health data in real time.
Support Bluetooth or NFC modules, and use antenna design to optimize data transmission performance.
Power management
Compact connection of batteries, power management chips and functional modules is achieved through Flexible circuit.
Support packaging of flexible lithium batteries or ultra-thin batteries.
User interaction
Integrate capacitive touch or gesture sensors to provide users with intuitive operation experience.
Application cases
Oura Ring: A well-known health monitoring ring (smart ring) that contains heart rate sensors, temperature sensors and motion sensors, and relies on highly integrated Flex PCB to achieve functions.
Smart wedding ring: Built-in NFC chip for payment or data interaction.
Sleep monitoring ring: Combines Flexible PCB with low-power chips to monitor the user's sleep quality.
Flex Plus - Your trusted partner for flex PCB and FPCBA solutions. With over 20 years of experience, we deliver high-quality flex PCBs and expert assembly services for advanced applications.
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