SYSTEMS AND METHODS FOR OVERHEAT DETECTION SYSTEM EVENT LOCATION

摘要

Embodiments relate to systems for improved relative location identification for overheat, short circuit, and open circuit events. The systems accomplish the improvements by utilizing any, or a combination, of implementing a novel calculation formula, determining and implementing an external offset value, and determining and implementing an internal offset value.

主权项

1. A system comprising:
a sensing element comprising an inner wire, a conductive outer tube, and a filler interposed between the inner wire and the conductive outer tube, wherein an electrical resistance of the filler lowers at a temperature indicative of an overheat event, wherein the sensing element comprises at least one of a loop start electrical connector and a loop end electrical connector; and an electronic controller comprising at least one of a loop start port and a loop end port, the electronic controller configured to electrically connect to at least one of the loop start electrical connector and to the loop end electrical connector, the electronic controller comprising at least one nonvolatile memory configured to store an internal offset value indicative of an error due to internal controller circuitry variances for at least one of a loop start reading and a loop end reading, wherein the electronic controller is configured to determine a relative location of an event in the sensing element using the internal offset value and the formula
½[Vs/(Vs+Ve)+(1−Ve/(Vs+Ve))],where Vs represents a voltage detected across a loop start location and Ve represents a voltage detected across a loop end location.