Computer apparatus with monitoring circuit for displaying fan working condition
US5835786A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | May 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H5/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Computer apparatus 10 provides the working condition of fan 12 therein to user display device 10D. Fan 12 has rotating blade 12B for moving a flow of convective cooling air. The fan also has motor winding 12W which receives working current for causing the blade to rotate. Current monitoring circuit 14 is responsive to the working current for determining the present fan working condition. Display message generator 16 is responsive to the present fan working condition from the current monitoring circuit for generating a user message containing the present fan working condition. A central processing unit (CPU chip) 10C controls the operation of the computer apparatus. The CPU employs a multi-task operating system such as 3.1 windows which permits non-disruptive interruption of system functions in order to the present user message containing the present fan working condition to the user display monitor. The operating system polls the display message generator at predetermined time intervals in order to capture the present fan working condition. If the user message indicates a normal fan working condition, the operating system resets a timer. If the user message indicates an abnormal fa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.