Product sales system

A product sales system that sells a product displayed on a display shelf in a store to a customer outside manned opening hours of the store, the product sales system comprising:

• a store server that includes an information processing system;
• and
• a picking robot that is movable in the store, wherein the store server includes:
• an order reception unit that receives an order of a product from an information processing terminal of the customer via a network, and
• a picking processing unit that instructs the picking robot to pick the product related to the order from the display shelf and convey the product to a predetermined delivery place,
• the picking robot includes:
• an arm that is able to move a tip end portion to a desired position,
• a picking means for picking a product, the picking means being installed at the tip end portion of the arm, and
• a sensor having an image-capturing function, the sensor being installed near the tip end portion of the arm, the picking robot:
• moves to the display shelf on which the product related to the order is displayed based on identification information for specifying the display shelf stored in a database,
• photographs, by the sensor, an image of a display level of the display shelf on which the product related to the order is displayed,
• detects one or more objects by image processing from the photographed image of the display level of the display shelf on which the product related to the order is displayed,
• identifies the product related to the order among the one or more objects and a position of the identified product related to the order by image recognition processing of the photographed image based on a recognition model set for each product with respect to each object,
• moves the picking means to the identified position of the identified product related to the order, and
• picks up the identified product related to the order by the picking means, and
• the picking robot
• acquires the recognition model set for a product related to the order from the store server when the picking robot moves for a predetermined distance toward the display shelf on which a product related to the order is displayed.