Patent ID: 7004289
Filing Date: 2006-02-28
Classification: B66B

Abstract:
1. An elevator performance meter, comprising: an internal processor for controlling the functions of said elevator performance meter; a sensor for continuously monitoring and measuring the acceleration of an elevator and generating an analog voltage output signal; an anti-alias filter, positioned in direct communication with said sensor, for receiving the analog signal from said sensor and removing background noise from the signal; an analog to digital converter for receiving low-pass filtered data from said anti-alias filter and converting the filtered data into a digital numerical value and send the digital numerical value to said processor; a clock for providing an accurate time base for said internal processor; a power supply for providing power to said elevator performance meter; a battery pack for providing battery power to said power supply; a battery monitor for monitoring the level of power remaining in the battery pack and reporting a warning to said processor when the level of power remaining in said battery pack is lower than a predetermined limit; an outer housing having a top surface, a bottom surface and a plurality of side portions for encasing said sensor, said anti-alias filter, said analog to digital converter, said clock, said power supply, said battery pack and said battery monitor in a single self contained enclosure; a processor program embedded in said processor for analyzing the filtered data sent to said processor and for managing the functions of said elevator performance meter; and a display unit for receiving the results of the analyzed data from said processor and displaying the results to the operator of the elevator performance meter in an alphanumeric format; whereby said elevator performance meter measures the variations in the velocities, accelerations, jerk and run durations of the elevator, analyzes the measurements and provides the results of the analysis to the operator of the performance meter in an easily understandable format.