Tare compensation method for weighing passenger lift suspension load - measuring load on cage suspension and digitising difference between load and tare compensation signals and moving cage accordingly

摘要

The method involves preparing an analogue load signal representing the load on the cage suspension, a tare compensation signal and a compensated analogue load signal according to the difference between the load and compensation signals and digitising the compensated signal. The digitised signal is stored. A useful load signal is produced according to the difference between the stored digitised load signal and the digitised load signal. The elevator cage is moved according to the useful load signal. USE/ADVANTAGE - For compensating empty weight of passenger lift cage. Weight on suspension is measured without use of calibration weight.