The Application of Microwave Detecting Textile Moisture Content

In the process of fabric production, the moisture content of fabric fair influences efficiency and cost of produce. Thus, it is important to measure exactly. In order to detect the moisture content of fabric quickly and accurately, an on-line measurement system based on microwave transmission principle was designed for measuring moisture content of fabric, which can achieve the non-destructive testing of the fabric moisture content. Focused on the moisture content measurement principle and method, using least square method fitting a straight line to obtain calibration curve between the fabric humidity and attenuation. Adopt PLC as the system controller, using software programming to debounce and filter the signal, and convert it into a moisture content, through the Touch Panel display. A comparison is made between drying oven method and this system and errors are also analyzed, further proving the feasibility of the equipment.