Data storage of construction machine and data processor
US6339737B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Jul 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C5/085
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Storage of data which changes during the operation of a construction machine and processing of data can be performed at a low cost by using existing sensors and switches mounted on the construction machine. In an operation section of a controller, each level for indicating a content of a detection signal of each sensor or an instruction signal of a switch is determined first. Then, the detection signal to be input is judged to belong to which of the respective levels at every sensor readout interval (sampling time), and a count value of the level to which the detection signal was judged to belong is processed to add for a portion of the sampling time. And, a time count value at every level stored in a storage section is read from the outside to perform the data processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.