Patent ID: 9534360
Date: 2017-01-03
CPC Classifications: E03C,G01S

Claim:
1. An apparatus for dispensing liquid, which apparatus is arranged to detect an object and to control the dispensing of said liquid, said apparatus including: a first signal source which is arranged to generate a first beam pulse and a second signal source which is arranged to generate a second beam pulse wherein said first and second beam pulses are so oriented in relation to each other that the propagation paths of said beam pulses cross each other, a receiver which is arranged to receive reflected parts of said first beam pulse and which is arranged to receive reflected parts of said second beam pulse, the parts reflected from said first and second beam pulses being reflected from said object which is located on the propagation path of the first and the second beam pulse, and a signal processing unit which is arranged to detect said object based on the parts reflected from said beam pulses received by said receiver and, based on this detection, arranged to control the dispensing of liquid, wherein the apparatus further includes that said first beam pulse and said second beam pulse are alternating in terms of time in relation to each other and wherein said signal processing unit is arranged to detect said object based on calculating proportion of a power level of the reflected parts of the first pulse to a power level of the reflected parts of the second pulse.