PROBLEM TO BE SOLVED: To provide a device for inspecting cracking capable of measuring the size of an egg without a special mechanism.SOLUTION: There is provided a device for inspecting cracking 1 according to the present invention which comprises: impact application means 2 for applying impact to an egg E vibration sound detection means 3 for detecting a vibration sound generated with the impact to output a vibration sound signal of the vibration sound and arithmetic means 4 for putting the vibration sound signal through arithmetic processing to detect cracking of the egg E. The vibration sound detection means 3 includes microphones 3a and 3b, each of which is located at different distances from the location P of the egg E and outputs vibration sound signals. The arithmetic means 4 compares the vibration sound signals output from microphones 3a and 3b to measure the size of the egg E on the basis of the comparison result in addition to the cracking detection.COPYRIGHT: (C)2015,JPO&INPIT【課題】特別な機構を設けなくても卵の寸法を測定することができるひび割れ検査装置を提供する。【解決手段】本発明に係るひび割れ検査装置1は、卵Eに衝撃を付与する衝撃付与手段2と、衝撃が付与されたときに生ずる振動音を検出するとともに該振動音に関する振動音信号を出力する振動音検出手段3と、振動音信号に演算処理を施して卵Eのひび割れを検出する演算手段4とを備えたものであって、振動音検出手段3は、卵Eの位置Pからの距離が異なる複数のマイクロフォン3a、3bを含み、複数のマイクロフォン3a、3bのそれぞれが振動音信号を出力し、演算手段4は、ひび割れを検出するとともに、複数のマイクロフォン3a、3bから出力された複数の振動音信号を比較した結果に基づいて卵Eの寸法を測定する。【選択図】図1
