INSPECTION DEVICE AND INSPECTION PROGRAM

An inspection device includes an output unit, a storage unit, and an inspection unit. The output unit outputs a control signal for controlling a water supply valve configured to control supply and no supply of irrigation water from a water supply pipe provided in an open farm field in which plants grow to the farm field, between an open state and a closed state. The storage unit stores a plurality of water pressures of irrigation water detected by a water pressure sensor from a state where the water supply valve becomes in the open state and irrigation water is supplied from the water supply pipe to the farm field until an expected time elapses after the water supply valve becomes in the closed state and the water supply pipe is expected to be filled with irrigation water. The inspection unit calculates a time constant of water pressure based on the plurality of water pressures of the irrigation water and inspects the water supply pipe based on the time constant.