ELECTRICAL SYSTEM HEALTH MONITOR (ESHM) SYSTEM AND METHOD
First Claim
1. An engine-powered vehicle, comprising:
- an engine for providing power to the vehicle;
a battery configured to provide electrical power and corresponding to a battery voltage indicating an output voltage of the battery;
a starter configured to start the engine using the electrical power provided by the battery;
an alternator configured to recharge the battery while the engine is running;
a plurality of switchable electrical loads;
a key switch configured to control the electrical power to the switchable electrical loads and corresponding to a key voltage indicating a voltage at the key switch output;
an electrical system health monitor (ESHM) controller configured to;
monitor a plurality of voltages including at least the battery voltage and the key voltage;
determine an operating state based on the plurality of voltages;
determine whether an operating state is a valid operating state or a fault state;
when the operating state is a fault state, set a fault alert for vehicle maintenance; and
when the operating state is a valid operating state, monitor a predetermined set of input parameters corresponding to the operating state, detect certain anomalies based voltage waveforms of the plurality of voltages, and perform a corrective action based on the anomalies.
1 Assignment
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Accused Products
Abstract
An engine-powered vehicle includes an engine, a battery corresponding to a battery voltage, a starter, an alternator, a plurality of switchable electrical loads, a key switch configured to control the switchable electrical loads and corresponding to a key voltage, and an electrical system health monitor (ESHM) controller. The ESHM controller is configured to monitor a plurality of voltages, to determine an operating state based on the plurality of voltages, and to determine whether an operating state is a valid operating state or a fault state. The ESHM controller is configured to set a fault alert for vehicle maintenance when the operating state is a fault state and, when the operating state is a valid operating state, to monitor a predetermined set of input parameters corresponding to the operating state, to detect certain anomalies based voltage waveforms of the plurality of voltages, and to perform a corrective action based on the anomalies.
15 Citations
19 Claims
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1. An engine-powered vehicle, comprising:
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an engine for providing power to the vehicle; a battery configured to provide electrical power and corresponding to a battery voltage indicating an output voltage of the battery; a starter configured to start the engine using the electrical power provided by the battery; an alternator configured to recharge the battery while the engine is running; a plurality of switchable electrical loads; a key switch configured to control the electrical power to the switchable electrical loads and corresponding to a key voltage indicating a voltage at the key switch output; an electrical system health monitor (ESHM) controller configured to; monitor a plurality of voltages including at least the battery voltage and the key voltage; determine an operating state based on the plurality of voltages; determine whether an operating state is a valid operating state or a fault state; when the operating state is a fault state, set a fault alert for vehicle maintenance; and when the operating state is a valid operating state, monitor a predetermined set of input parameters corresponding to the operating state, detect certain anomalies based voltage waveforms of the plurality of voltages, and perform a corrective action based on the anomalies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for an on-board electrical system health monitor (ESHM) system in an engine-powered vehicle containing an engine for providing power to the vehicle, a battery configured to provide electrical power and corresponding to a battery voltage indicating an output voltage of the battery, a starter configured to start the engine using the electrical power provided by the battery, a plurality of switchable electrical loads, and a key switch configured to control the electrical power to the switchable electrical loads and corresponding to a key voltage indicating a voltage at the key switch output, the method comprising:
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monitoring a plurality of voltages including at least the battery voltage and the key voltage; determining an operating state based on the plurality of voltages; determining whether an operating state is a valid operating state or a fault state; when the operating state is a fault state, setting a fault alert for vehicle maintenance; and when the operating state is a valid operating state, monitoring a predetermined set of input parameters corresponding to the operating state, detecting certain anomalies based voltage waveforms of the plurality of voltages, and performing a corrective action based on the anomalies. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification