Temperature switch circuit having dynamic temperature thresholds
US8928393B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Oct 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus comprising a temperature switch and a logic device, and a method of implementing multiple dynamic temperature thresholds. The temperature switch has a temperature sensor, a temperature threshold select input, and an output to a temperature threshold interrupt line, wherein the temperature switch selects a current temperature threshold from multiple predetermined temperature thresholds as determined by a state of the temperature threshold select input. The temperature switch causes an interrupt assertion on the temperature threshold interrupt line in response to the temperature sensor indicating a sensed temperature that exceeds the temperature threshold. The logic device has an input coupled to the temperature threshold interrupt line and a temperature threshold select output coupled to the temperature threshold select input of the temperature switch. The logic device automatically increments the temperature threshold select output in response to detecting an interrupt assertion on the temperature threshold interrupt line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.