Diagnostic apparatus for an electronic controller
US5463559A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B9/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A portable electronic apparatus tests and diagnoses an electronic controller of a machine. The electronic apparatus includes an AC voltage detection means for sequentially detecting at least one high level AC voltage signal generated by at least one electronic controller output. A converter converts the at least one high level AC voltage signal to at least one low level DC voltage signal which simulates a low level contact closure input. A means is provided which sequentially inputs the at least one low level DC voltage signal to a low level DC voltage input of the electronic controller for detection by the electronic controller. A generator generates at least one analog voltage signal which simulates at least one known, fixed value operating parameter of the machine. A means is provided which inputs the at least one analog voltage signal to a predetermined electronic controller input for detection by the electronic controller. An indicator sequentially indicates the detection of the at least one high level AC voltage signal, the detection of the at least one low level DC voltage signal, and the detection of the at least one analog voltage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.