Image sensor detection method, system and device

The invention is applicable to the technical field of image sensor, and provides an image sensor detection method, system and device. The method comprises the following steps: obtaining background data of effective pixel points collected by an image sensor; performing statistics on a maximum pixel output value and a minimum pixel output value in the background data; calculating a pixel output meanof the background data according to the maximum pixel output value and the minimum pixel output value; judging whether the maximum pixel output value, the minimum pixel output value and the pixel output mean are within corresponding reference value ranges; if so, indicating that the image sensor is a qualified product; and if not, indicating that the image sensor is an unqualified product. By adoption of the image sensor detection method, system and device provided by the invention, in a production process of money detectors, whether the image sensors are qualified can be detected to reduce the reject ratio of the im