Image-method-based method for measuring melting point of molten salt

The invention relates to an image-method-based method for measuring a melting point of molten salt. The device comprises a high temperature furnace, a temperature sensor, a high temperature furnace controller, a camera device, an image acquisition card, a variable light source, a light control unit and a computer. The computer is connected with the the high temperature furnace controller and the image acquisition card electrically. The computer is configured to send a start-stop signal to the high-temperature furnace controller due to external triggering, so that the high-temperature furnace controller controls the high-temperature furnace to start or stop; a temperature signal can be carried and the high temperature furnace controller is controlled based on the temperature signal to control the temperature rising speed of the high temperature furnace; and the computer can carry out comparison and analysis on the temperature signal and the image signal to obtain the melting point of amolten salt sample. Accor