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Development status and Application prospect of electronic intelligent Textile (I) -- working principle and development course of electronic intelligent textile

Time : 2021-08-23 Hits : 14

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Intelligent textile is a kind of new textile which can sense the change of human body and environment signal and respond to it through feedback mechanism through multi-disciplinary integrated technology such as textile, electronics, information, biology, medicine and new energy. In recent years, with the miniaturization of electronic products, flexibility, and the development of the textile science and technology, electronic smart textiles as a kind of intelligent textiles of the development and application of the most widely and enrich the product category, broaden the application area, gradually accepted by the market and consumers, become one of the important development direction of textile and clothing in the future. To this end, the editorial department has set up a special topic of "Development status and Application prospect of electronic intelligent Textiles", and plans to introduce and popularize electronic intelligent textiles to readers from the perspectives of raw materials, technology, system design, market application and other aspects through the 5th to 6th wechat topics.

With the progress of science and technology and the improvement of living standards, the functional and intelligent requirements of textiles have been greatly improved, prompting the development of textiles to the direction of multi-function and intelligent. This development direction is also accompanied by the application of electronic information technology, so that the use of electronic components of intelligent textiles, namely electronic intelligent textiles, has become one of the focus of the field of intelligent textile development. Especially in recent years, the flexible electronics, including soft sensors, switches, the introduction of electronic circuit, conductive yarns, etc, and its integration with textiles, has given rise to better wearing performance of electronic intelligent textiles, and expand the application field and all walks of life, including civil, military, medical, aerospace, etc., has great potential for development and prospects.

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The working principle of electronic intelligent textile

Most electronic intelligent textiles are mainly composed of micro sensors, microprocessors, actuators and portable micro batteries. The sensor can sense the micro-signal emission source, including light, sound, temperature, action, etc., and transmit the different micro-voltage signals generated by these micro-signal emission sources to the microprocessor for operation and processing, and then transmit the processed electrical signals to the actuator for functional operation. The actuators of electronic intelligent textiles are generally composed of micro-electrical switches connected with micro-devices of different functions, including electric heating fibers, micro-LED light-emitting devices or micro-motors that can generate kinetic energy, etc.

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The fundamentals of smart textiles

Development of electronic intelligent textiles

The first generation of electronic Smart Textiles, also known as Passive Smart Textiles, can only sense the environment based on sensors and provide only relevant information of the wearer, such as temperature. Two temperature sensors woven with metal wire are shown in the picture, which can be used to collect data related to human signs.

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a) polyester yarn mixed with copper wire (b) copper wire interwoven with polyester monofilamentTemperature sensor woven with metal wire

The second generation of electronic Smart Textiles is also known as Active Smart Textiles. It has both a sensor and an actuator device. The sensor senses the stimulus signal generated by the environment, and sends the stimulus signal directly to the actuator. The actuator carries out simple control according to the instruction. The figure below shows the application of the 2nd generation of electronic smart textile in Socks with both sensors and actuators, in which the sensor can monitor the pressure distribution on the whole foot, thus driving the actuators to flexibly adapt to different foot shapes. In addition, this kind of electronic intelligent textile with the function of sensor and actuator is often used in intelligent clothing such as active temperature regulation.

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Smart socks with sensing and executive functions

The third generation of electronic Smart Textiles is also known as Very Smart Textiles. It is equipped with a sensor, microprocessor, actuator, through the microprocessor to the sensor sensing information for intelligent judgment, automatic adjustment to the most suitable conditions required to execute the control; At the same time, the information can also be transmitted to the central system through the network for necessary broadcast and control functions, so as to achieve the purpose of safe, intelligent, functional modulation. The smart temperature-regulating garment, shown below, works by sensing changes in the external environment and sending signals to a microprocessor, which controls/regulates the body temperature to a comfortable and safe level through the heating element in the garment.

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Clothing with intelligent temperature regulation function

Next time we will introduce the implementation of electronic smart textiles. Please keep an eye on this topic.

(Source: Textile Guide)

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