Missing item management apparatus and method for managing missing items

摘要

Out-of-stock commodity is flexibly managed according to a change in shelf assignment. Each of sensor units (101-1 to 101-N) is configured by at least one pressure sensor and outputs an analog signal corresponding to a weight of a commodity detected by at least one pressure sensor. Sensor output unit (103) converts an analog signal output from each of a plurality of sensor units into a digital signal indicating whether or not the number of commodities in regions where respective sensor units are installed is equal to or less than a predetermined number. Combination setter (104) sets one or more groups obtained by grouping a plurality of sensor units. Output integrator (105) integrates a digital signal for each group. Out-of-stock commodity manager (106) manages an out-of-stock commodity state of commodities in each group, based on an integrated digital signal.