A thermistor-based system and method for distinguishing between adult and child passengers and, of the child passengers, between those seated in a child restraint system and those seated in a child booster is provided. The disclosed inventive concept includes at least one classification thermistor/temperature sensing device, at least one reference thermistor, an algorithm to compute and classify conditions, and related wiring and hardware. The classification thermistor/temperature sensing device is located in a seat cushion assembly and a seat back. The temperature sensors are used to detect heat transfer between an object in contact with the cushion through the seat trim and, if applicable, some amount of seat comfort base material. The reference thermistor may be provided to enhance robustness of classification determination. The algorithm computes and classifies conditions based on at least the magnitude and/or the rate of temperature change between the classification sensor and the reference sensor.
Vehicle seat thermistor for classifying seat occupant type
2018-02-13
Patent
Elektronische Ressource
Englisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / G01K MEASURING TEMPERATURE , Messen der Temperatur |
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