| 摘要 |
PROBLEM TO BE SOLVED: To suppress that the detection accuracy of a detection part becomes instable in terms of a time when suppressing the interference of an electric wave.SOLUTION: A water discharge device comprises: a water discharge part which discharges water; a detection part which emits and receives an electric wave, and detects an object to be detected; a water discharge treatment part which controls and treats discharged water from the water discharge part on the basis of a detection result of the detection part; a random number generation part which generates a random number; and a start treatment part which decides a variable period shorter than a cycle which is preset on the basis of the random number at each cycle which is preset, and makes the detection part which stands by for the variable period start light emission for a constant period.SELECTED DRAWING: Figure 2 |
