Elevator performance measuring device and method
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
The elevator performance meter is an embedded processor device specifically designed to measure the variations in velocity, acceleration, jerk and run duration as an elevator ascends and descends along a vertical axis. The performance meter utilizes an internal processor that is directly connected to a sensor via an analog to digital conversion unit, a program storage device, a display, a keypad, and power subsystems that are all contained within a single enclosure. The performance meter includes a display screen on its top surface with a keyboard for entering in operator menu selections. The performance meter is placed on the floor of an elevator and the embedded sensor measures certain physical properties of the elevator as it makes a floor-to-floor run. The measurement data is presented on the internal display as an alphanumeric readout that allows an elevator'"'"'s performance to be easily defined.
50 Citations
18 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A process for measuring the performance of an elevator comprising the steps of:
-
placing an elevator performance meter on the floor of an elevator to be tested and turning on the power of the meter; the operator placing an elevator floor call to begin movement of the elevator; continuously monitoring the raw acceleration of the elevator by an accelerometer enclosed in said meter and transferring measured raw acceleration data to an anti-alias filter; removing background noise from the raw acceleration data caused by acceleration voltage aliases with an anti-alias filter and transferring a filtered data signal to an analog to digital converter; converting the filtered data into a digital numerical signal and sending the digital signal to a processor; analyzing and measuring the digital signal with a processor program and sending the results of the analysis and measurements to a display unit; and displaying the results of the analysis and measurement on a display unit in an alphanumeric format. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification