133 results about "Electrically conducting yarn" patented technology

Existing pressure sensing fabrics may involve two portions, i.e., insulating and conductive portions in the fabric, which increases the complexity of the fabric system and more important, and the instablization of the resistance-strain relationship during dynamic deformation which limits the application fields due to intrinsic properties difference between the two portions. These fabrics commonly employ two or more layers to accomplish the detecting functions. Such arrangements increase the thickness, weight, and cost of the sensors with some other disadvantages such as low accuracy, instability, etc. This invention describes a pressure sensing fabric have a general structure as simple as a plurality of electrically conducting yarns forming interlocking loops of yarns. The pressure sensing fabric is found not only be able to sense pressure but also the magnitude of the pressure.

Existing pressure sensing fabrics may involve two portions, i.e., insulating and conductive portions in the fabric, which increases the complexity of the fabric system and more important, and the instablization of the resistance-strain relationship during dynamic deformation which limits the application fields due to intrinsic properties difference between the two portions. These fabrics commonly employ two or more layers to accomplish the detecting functions. Such arrangements increase the thickness, weight, and cost of the sensors with some other disadvantages such as low accuracy, instability, etc. This invention describes a pressure sensing fabric have a general structure as simple as a plurality of electrically conducting yarns forming interlocking loops of yarns. The pressure sensing fabric is found not only be able to sense pressure but also the magnitude of the pressure.

The invention relates to electrically conductive thread. Said thread comprises at least one elastic core thread, at least one electrically conductive thread that is wound around the core thread and at least one binding thread that is wound around the core thread and is non-electrically conductive. The extensibility of the entire electrically conductive thread is restricted by the binding thread.

The invention belongs to the field of wearable sensors, and particularly discloses a novel flexible fabric sensor for measuring human body knee joint movement and a method thereof. The current bending angle, formed when a user walks and does movement training, of the knee joint can be measured and output in real time. Common cloth is combined with conductive yarn, a sensitive unit of the flexible fabric sensor is developed, after the sensor is calibrated through a designed method, bending movement of the knee joint is converted into stretching movement of the flexible fabric sensor through a certain wearing mode, the problem that a rotating shaft moves when the knee joint rotates is effectively solved, and the current bending angle of the knee joint of the user is calculated and output. The flexible fabric sensor is convenient to use, low in cost and capable of being not limited by a field and measuring the bending angle of the knee joint of the user in a comfortable mode in real time and has high reliability and a good popularization prospect.

Textile-based electrodes incorporating graduated patterns include a fabric portion having non-conductive yarns and an electrically conductive region having electrically conductive yarn filaments. The electrodes can further include float yarns and can be configured in a textured or ribbed construction. When incorporated into a garment, the electrodes can be used to monitor biophysical characteristics, such as the garment wearer's heart rate.

A method for knitting a garment having a tubular form, including knitting at least one vertical conductive textile trace on a machine having N participating feeders and M needles. The method includes the steps of continuously knitting the tubular form with one or more flexible non-conductive base yarns, and knitting the vertical conductive textile trace integrally within the tubular form, using a conductive yarn, in addition to spandex yarns, but not the base yarns. The conductive yarn is knitted in a float-loop form by knitting a stitch and skipping over y needles, as follows: repeatably knitting a line segment Lk, using feeder Fi and starting at needle D1; and knitting line segment Lk+1, using the next feeder and start stitching the first float-loop at needle D1+s where 0<s<y.

A manually operable position sensor is shown, for providing control signals to an electronic device, such as an audio player. A fabric ribbon (101) has a length substantially longer than its width with insulating yarns and electrically conducting yarns included therein. The conducting yarns define three conductive tracks (103, 104, 105) running the length of the fabric. The conductive tracks are configured to interface with an electronic device at a first end. At a second end, an active region of the fabric forms part of a sensor assembly that is receptive to a manually applied pressure.

The invention relates to a breathable knitted spacer fabric friction generator and a preparation method thereof. The method comprises the steps of weaving a top layer and a bottom layer by using a three-wire plating process, controlling the yarn angles of surface yarns, intermediate yarns and ground yarns respectively such that the three yarns are sequentially arranged according to a certain positional relationship and then are woven, at the same time, in the weaving process, performing alternate tucking of spacer wires between a top layer ground yarn and a bottom layer ground yarn with a certain number of spacing stitches to form the breathable knitted spacer fabric friction generator, wherein a top layer surface yarn and a bottom layer surface yarn are at the outmost sides of a compositelayer and are insulating yarns, a top layer intermediate yarn and a bottom layer intermediate yarn are conductive yarns, the top layer ground yarn and the bottom layer ground yarn are opposite and are a triboelectric negative yarn and a triboelectric positive yarn correspondingly, and a spacer layer is composed of a set of spacer wires that are simultaneously connected to the top layer ground yarn and bottom layer ground yarn. The preparation method of the invention has the advantages of simple process and high weaving efficiency, and the obtained knitted spacer fabric friction generator hasgood gas permeability and has excellent promotion value.