Patent ID: 10232483

Abstract:
Provided is an ultrasonic displacement sensor that more accurately identifies a plurality of models on a conveyance line on which a plurality of types of workpieces having different specifications coexists, in particular, on a conveyance line of cylinder blocks in a manufacturing facility of engines for automobiles, to thereby improve reliability. An ultrasonic displacement sensor 1 or 2 for transmitting ultrasonic waves to an object, receiving reflected waves, and measuring time between transmission and reception includes: a main body case 41 including an ultrasonic element 31 or 32 at an end; a transparent case 42 attached to the main body case 41; a photoreflector 44 provided at a position of the transparent case 42 and including a light emission portion and a light reception portion; and a switching unit configured to switch, on the basis of output from the photoreflector 44, between an installation mode in which an attachment position of the main body case 41 is adjusted and a measurement mode in which the object is measured.