Controlling storage locations of products stored in storage containers in an automated storage and retrieval system
A method controls storage locations of products stored in storage containers in an automated storage and retrieval system operated by container handling vehicles. The storage and retrieval system comprises a grid structure with storage columns adapted for holding stacks of storage containers. The grid structure has a corresponding rail system above the storage columns for guiding movements of the vehicles adapted for transferring storage containers to and from the storage columns. Each vehicle comprises a vehicle controller connected to driving means for controlling movements of the vehicle along the rail system relative to movements of other vehicles. Controlling of container handling vehicles and storage locations of storage containers is handled by a main controller of the automated storage and retrieval system communicating with a Warehouse Management System configured to register each storage container to be stored and type of one or more products placed in the storage containers. The method for storing storage containers includes: a transferring step, a transmitting step, a reading step, and a selecting step. The transferring step transfers a set of storage rules from the Warehouse Management System to the main controller. The transmitting step transmits unique identification codes of the storage containers from the Warehouse Management System to the main controller, and corresponding content codes from a content code module to the main controller. The content codes are linked to storage rules that the main controller will apply for storing the storage containers at locations defined by the storage rules. The reading step reads the content codes in the main controller, and determines a storage location for the storage container according to the storage rule linked to the content code. The selecting step selects container handling vehicles for transferring the storage container, and for each selected container handling vehicle transmits instructions from the main controller to the vehicle controller to transfer the storage container to a storage location defined by the corresponding storage rule and updates a storage location database with the identification and storage location of the storage container.
1 . A controller system for controlling storage locations of products stored in storage containers in an automated storage and retrieval system operated by container handling vehicles, wherein the storage and retrieval system comprises a grid structure with storage columns adapted for holding stacks of storage containers, wherein the grid structure has a corresponding rail system above the storage columns for guiding movements of the vehicles adapted for transferring storage containers to and from the storage columns, wherein each vehicle comprises a vehicle controller connected to driving means for controlling movements of the vehicle along the rail system relative to movements of other vehicles, wherein controlling of container handling vehicles and storage locations of storage containers is handled by a main controller of the automated storage and retrieval system communicating with a Warehouse Management System configured to register each storage container to be stored and type of one or more products placed in the storage container, wherein:
the Warehouse Management System is configured to transfer a set of storage rules to the main controller and to transmit unique identification codes of the storage containers and where a content code module is configured to transmit corresponding content codes of the storage containers to the main controller, wherein each content code is linked to a storage rule that the main controller will apply for storing the storage containers at locations defined by the storage rules;
the main controller is configured to read the content codes and determine a storage location for each storage container according to storage rules linked to the content codes;
the main controller is further configured to select container handling vehicles for transferring the storage containers to storage locations, and to transmit instructions to the vehicle controller of the selected vehicles to transfer the storage containers to the storage locations defined by the storage rules and update a storage location database with the identification and storage locations of the storage containers.
2 . The controller system according to claim 1 , wherein the one or more storage columns are linked to one or more storage rules, by defining a type of product and a number of a same type of product that can be stored in each storage column.
3 . The controller system according to claim 1 , wherein the storage rules are defined for products in a storage container by one or more of the following parameters: minimum or maximum distance between products; maximum number of same types of products in a storage column; maximum storage depth in a storage column; maximum or minimum time products should be stored; specific storage columns to be used.
4 . The controller system according to claim 3 , wherein the main controller is configured to define a first and at least a second set of rules having different parameters.
5 . The controller system according to claim 1 , wherein the main controller is configured to apply different sets of rules according to a time of day.
6 . The system according to claim 1 , wherein the main controller is configured to enable or disable the rules according to a time of day.