FPC flexible circuit board has excellent performance, has an indispensable role in electronic products, in line with the development needs of smart phones, smart wearable devices. Under the trend of miniaturisation and thinning of electronic products, FPC boards are growing in volume and ushering in prosperous development.

Wearable devices have become integrated into daily life. These devices monitor users' body indicators in real time through a variety of sensors and technologies. Flexible textile strain sensors have become an ideal tool for monitoring the amount of exercise in daily activities due to their softness, lightness, breathability and stretchability. In addition, this sensor can also be used to evaluate exercise effects, monitor vital signs, etc.

The manufacturing and technology of sensors mainly rely on soft, conductive fabrics. These fabrics sense the body's strain and convert it into electrical signals. Meanwhile, flexible printed circuit boards are used to transmit electrical signals to external devices for processing and recording. In terms of material selection, the core part of the sensor is conductive fabric, and soft and conductive materials need to be selected. Flexible printed circuit boards require the selection of materials suitable for use in flexible electronic devices.

In order to achieve the purpose of accurately monitoring human movement, conductive fabrics need to be used in combination with flexible printed circuit boards. Flexible circuit boards play the role of transmitting electrical signals and connecting external devices in flexible textile strain sensors. Flex printed circuit boards usually consist of flexible substrates and printed circuits. Flexible substrates are made of materials with flexible and stretchable properties, such as polyimide, polyester, etc. Printed circuits cleverly print conductive materials according to designed patterns on flexible substrates to form circuits. Through the flexible circuit board, electrical signals are transmitted from the sensor to an external device for processing and recording. Sensor signal processing technology is a key link to achieve accurate monitoring of flexible textile strain sensors, including signal acquisition, conversion, transmission and processing. First, signal acquisition converts sensor resistance changes into voltage or current signals; then, signal conversion amplifies, filters, and digitizes the collected signals to facilitate transmission and recording. Then, signal transmission transmits the converted signal to an external device through an interface or communication protocol; finally, signal processing further processes and analyzes the signal transmitted to the external device to achieve functions such as motion monitoring and calculation.

In order to achieve the purpose of accurately monitoring human movement, conductive fabrics need to be used in combination with flexible printed circuit boards. Flexible printed circuit boards play the role of transmitting electrical signals and connecting external devices in flexible textile strain sensors. Flexible printed circuit boards usually consist of flexible substrates and printed circuits. Flexible substrates are made of materials with flexible and stretchable properties, such as polyimide, polyester, etc. Printed circuits cleverly print conductive materials according to designed patterns on flexible substrates to form circuits. Through the flexible circuit board, electrical signals are transmitted from the sensor to an external device for processing and recording. Sensor signal processing technology is a key link to achieve accurate monitoring of flexible textile strain sensors, including signal acquisition, conversion, transmission and processing. First, signal acquisition converts sensor resistance changes into voltage or current signals; then, signal conversion amplifies, filters, and digitizes the collected signals to facilitate transmission and recording. Then, signal transmission transmits the converted signal to an external device through an interface or communication protocol; finally, signal processing further processes and analyzes the signal transmitted to the external device to achieve functions such as motion monitoring and calculation.

Advantages of FPC flexible circuit boards
FPC flexible circuit boards have become the main application components in electronic products due to their advantages of high speed and high frequency, bending and foldability, thinness and integration.
The physical characteristics of FPC flexible circuit boards can be summarized as follows: in compact, light and thin products, it can achieve multi-dimensional packaging, improving product flexibility and space utilization; it has excellent electrical properties, can quickly transmit electrical signals, and provides more High assembly reliability; helps reduce the assembly process of electronic products and enhance mechanical stability.

Conditions that high-quality FPC flexible circuit boards must meet.
The performance and quality of FPC vary greatly due to different manufacturing processes or material selections. High-quality FPC flexible circuit boards should meet the following requirements:
1. The shape is not deformed, the screw holes are not misaligned, and the design is error-free. 

2. It has strong environmental resistance and can maintain good performance in high temperature and high humidity environments;
3. The thickness, width, and distance of the lines meet the installation requirements, and there are no short circuits or open circuits;
4. There is no additional electromagnetic radiation, and the copper on the surface is not easy to fall off or be oxidized;
5. Mechanical performance, electrical performance, and environmental performance meet the testing requirements and have high reliability.

Related Posts:

1.What Is A 4-Layer PCB?

2.Why use flexible circuit boards?

3.The Significance of Flexible PCB Prototyping

4.Custom PCB-The Ultimate Guide

5.Top 10 PCB Circuit Board Manufacturers in China

Welcome to consult our sales engineer with BOM list and Gerber file