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AssigneeQUALCOMM Incorporated
InventorThomas F. Doyle
Estimating the term…
A system and method for detecting fault conditions within a vehicle recording device are disclosed herein. The fault detection technique may be implemented in a vehicle in which are incorporated one or more vehicle sensors for monitoring one or more operational parameters of the vehicle. A recording device disposed within the vehicle is used to collect vehicle operation data produced by the one or more vehicle sensors. The fault detection technique of the invention contemplates storing a current time value at regular intervals during periods in which the recording device is provided with a source of main power. Time differences are determined between consecutive ones of the stored time values, and the time differences compared to a predetermined maximum value. A power loss fault condition is registered when at least one of the time differences exceeds the predetermined maximum value. In a preferred implementation an indication of the existence of the power loss fault condition is transmitted to a central control station. Fault detection may also be effected within a vehicle recording device by repeatedly storing a cumulative value of an operational parameter registered by a sensor unit incorporated within the vehicle. The last stored cumulative value is compared to a cumulative value currently registered the sensor unit, and difference value is determined therebetween. A fault condition is indicated when the difference value exceeds a predetermined maximum value. Again, an indication of the existence of the fault condition may then be transmitted to a central control station.
In a vehicle including one or more vehicle sensors for monitoring one or more operational parameters of said vehicle, said vehicle including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a method for detecting fault conditions within said recording device comprising the steps of:
In a vehicle including one or more vehicle sensors for monitoring one or more operational parameters of said vehicle, said vehicle including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a method for detecting fault conditions within said recording device comprising the steps of:
In a system including a fleet of vehicles in communication with a central control station wherein a first of said vehicles includes one or more vehicle sensors for monitoring one or more operational parameters and a mobile communications terminal linked to said one or more vehicle sensors, said mobile communications terminal including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a method for detecting fault conditions within said recording device comprising the steps of:
In a system including a fleet of vehicles in communication with a central control station wherein a first of said vehicles includes one or more vehicle sensors for monitoring one or more operational parameters and a mobile communications terminal linked to said one or more vehicle sensors, said mobile communications terminal including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a method for detecting fault conditions within said recording device comprising the steps of:
In a vehicle including one or more vehicle sensors for monitoring one or more operational parameters of said vehicle, said vehicle including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a fault detection system for detecting fault conditions within said recording device, said system comprising:
In a vehicle including one or more vehicle sensors for monitoring one or more operational parameters of said vehicle, said vehicle including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a fault detection system for detecting fault conditions within said recording device, said system comprising:
In a system including a fleet of vehicles in communication with a central control station wherein a first of said vehicles includes one or more vehicle sensors for monitoring one or more operational parameters and a mobile communications terminal linked to said one or more vehicle sensors, said mobile communications terminal including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a recording device fault detection system comprising:
In a vehicle including at least one vehicle sensor unit for monitoring an operational parameter of said vehicle and for registering a cumulative value of said parameter, said vehicle including a recording device connected to said one vehicle sensor unit, a method for detecting fault conditions within said recording device comprising the steps of:
In a vehicle including at least one vehicle sensor unit for monitoring an operational parameter of said vehicle and for registering a cumulative value of said parameter, said vehicle including a recording device connected to said one vehicle sensor unit, a fault detection system for detecting fault conditions within said recording device, said fault detection system comprising:
In a vehicle including one or more vehicle sensors for monitoring one or more operational parameters of said vehicle, said vehicle including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a method for detecting fault conditions within said recording device comprising the steps of:
In a vehicle including one or more vehicle sensors for monitoring one or more operational parameters of said vehicle, said vehicle including a recording device for collecting vehicle operation data produced by said one or more vehicle sensors, a fault detection system for detecting fault conditions within said recording device, said system comprising:
Dependencies are inferred from the claim text.