Liquid surface tension measuring device and method based on Faraday wave principle

According to the Faraday wave principle-based liquid surface tension measuring device and method, a vibrator is connected with a cylindrical container, and to-be-measured liquid is contained in the cylindrical container; a soft light paper tube is wrapped outside the cylindrical container, a light source is arranged obliquely above the soft light paper tube, and a high-speed camera and an image processing unit which is in signal connection with the high-speed camera and installed in a computer are arranged right above the cylindrical container; the to-be-detected liquid in the cylindrical container is influenced by vertical vibration, and regular and ordered Faraday waves are generated due to surface instability; light rays of the light sources on the two sides are irradiated under the action of soft light paper and are received and processed by an image collection module after being reflected by liquid surface waves, and surface tension information of liquid can be determined by judging a liquid Faraday wave