Yarn twist detecting device and yarn twist detecting method

The invention provides a yarn twist detection device and a yarn twist detection method. The yarn twist detection device comprises an image collector, a transmission device, an encoder, an A/D converter, an FPGA chip and an image processor. The image collector and the encoder are installed on a conveying device, the image collector is electrically connected to an encoder and the A/D converter, theA/D converter is electrically connected to an FPGA chip, the FPGA chip is electrically connected to image processor, and the conveying device is used to convey yarn; during power-on operation of the conveying device, the encoder is driven to run, the encoder triggers the image collector to collect an image of the yarn, the image collector sends the collected yarn image to A/D converter, the A/D converter processes the yarn image and sends it to FPGA chip for storage, and the image processor reads the yarn image from the FPGA chip and processes it to obtain the twist of the yarn. 本发明提供了种纱线捻度检测装置和纱线捻度检测方法，其中，纱线捻度检测装置包括：