| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability by preventing sensing failure in approach detection and the erroneous sensing of noise. SOLUTION: The approach sensor that senses the approach of an object as an electric signal, makes a judgment by an arithmetic processing apparatus 26 in a sensor module 2, and generates an alarm comprises a self-diagnosis section 24 for self-diagnosing the sensing section 22, and a parameter control section 25. At the same time, the arithmetic processing apparatus 26 comprises a section for executing a learning function, an environment-conforming function, and a self-diagnosis function. COPYRIGHT: (C)2003,JPO |
