| 摘要 |
THE PRESENT INVENTION MEASURES THE ENERGY CONSUMPTION OF BATTERY-POWERED TELEPHONE DEVICES TO PREVENT THE INADVERTENT DEEP DISCHARGE OF A VEHICLE'S BATTERY (70) BY PROLONGED USE OF SAID DEVICES WHEN THE VEHICLE (60) IS UNATTENDED. IN A PREFERRED EMBODIMENT, CURRENT TO THE DEVICES IS INCREMENTALLY MEASURED OR ESTIMETED FROM A MEASUREMENT OF OTHER RELEVANT PARAMETERS. THE INCREMENTAL MEASUREMENTS OF CURRENT ARE ACCUMULATED TO PRODUCE A TOTAL CURRENT CONSUMPTION INDICATIVE OF THE TOTAL ENERGY CONSUMPTION. AT EACH UPDATE AFTER AN INCREMENTAL MEASUREMENT, THE ACCUMULATED TOTAL IS COMPARED TO A PRE-ESTABLISHED OR ADAPTIVELY DETERMINED. WHEN THE TOTAL ENERGY CONSUMPTION MEETS OR EXCEEDS THE THRESHOLD, THE POWER TO THE BATTERY-POWERED TELEPHONE DEVICE IS INTERRUPTED IN ORDER TO CONSERVE A SUFFICIENT AMOUNT OF POWER TO START THE VEHICLE (60) AND TO OPERATE OTHER PERIPHERAL SYSTEMS.(FIGURE 3 & 6)
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