THE SERIAL NOTCH AUTOMATIC IDENTIFICATION SYSTEM
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2002-Feb-08
Automatic Identitication is the process of automati- Fiie 1 shows an overview of the Serial Notch Auto- cally associating a unique identitication code with a part. matic Identification System. A series of notches of vary- This is most often done by detecting a feature inscribed ing depths are inscribed in the part. The notches encode in the part or reading a tag attached to the part. Although an identification number which uniquely identities the barcode-label based automatic identitication systems are part. The notches do not have to be rectangular-many the most common, these systems often suffer from other shapes are also possible, such as circular, square, unacceptably high error rates and are diicult to suc- or elliptical. As the part moves through the reader, the cessfully apply when the part is subjected to harsh envi- analog displacement sensor provides a voltage propor- ronments. The new automatic identification system tional to the depth of each notch. After all notches have presented in this paper is an alternative to barcode-based been read, the notch depths are turned into the bit pat- systems. tern which represents the part identification number.