a kneading wing sensing apparatus which , when user kneads materials for baking bread , detects whether the kneading wing is placed into a container or not . the main principal for detecting the kneading wind is to compare the pulse signal with a memorized pulse signal . the memorized upper limit value is a state of revolution without the kneading wing and the lower limit value is a state of revolution with the kneading wing in an unusual revolution . the detecting method of the revolution is a rotating disk inclusive of multiple holes and a sensing device attached to a motor .