Fatty acid value fast detector

The utility model discloses a fatty acid value fast detector, which comprises a main shell, a camera obscura and a control box, one end of the main shell is provided with a mounting port corresponding to the camera obscura, a plurality of color sensors are fixedly inserted on the inner wall of the camera obscura, the control box is fixedly connected with the inner wall of the main shell, and the bottom of the main shell is fixedly connected with a bottom plate; a touch screen and an indicating lamp are fixedly embedded in the top of the main shell, a control switch and a data connector are fixedly embedded in the outer side wall of the main shell, and a controller, a storage, a power source, a signal receiver and a signal emitter are arranged in the control box. A large-capacity battery is arranged in the instrument, the instrument can be used for 6 hours in a standby mode, has a data storage function, can export data to a computer, is convenient to carry on the whole, can be used for outdoor experiment offic