公开(公告)号：US09828216B2

公开(公告)日：2017-11-28

申请号：US15119463

申请日：2014-02-18

Applicant: Otis Elevator Company

Inventor： Ruth Berben ,  Richard N. Fargo ,  Peter Liaskas

IPC: B66B3/00 ,  B66B7/12 ,  B66B5/00 ,  G01N27/04

CPC classification number: B66B7/1223 ,  B66B5/0031 ,  B66B5/0087 ,  G01N27/041

Abstract: An electrical inspection system for an elevator load bearing member includes an electrically conductive, low resistance wrap located at the load bearing member, contacting the load bearing member around a circumference of the load bearing member. An inspection unit is configured to apply an electrical current through the load bearing member and determine an electrical resistance of the load bearing member, and is electrically connected to the load bearing member at the wrap to distribute electrical current uniformly therethrough. A method of determining an electrical resistance of a load bearing member of an elevator system includes applying an electrically conductive low electrical resistance wrap entirely around a circumference of the load bearing member. An inspection unit is connected to the load bearing member at the wrap. An electrical current is applied through the wrap into the load bearing member to determine an electrical resistance of the load bearing member.

公开(公告)号：US20130207668A1

公开(公告)日：2013-08-15

申请号：US13782788

申请日：2013-03-01

Applicant: OTIS ELEVATOR COMPANY

Inventor： Richard N. Fargo ,  Peter Liaskas

IPC: G01N27/20 ,  G01R35/00 ,  H01C1/16

CPC classification number: G01N27/20 ,  B66B7/1223 ,  D07B1/145 ,  G01N27/046 ,  G01R35/00 ,  H01C1/16

Abstract: A resistance circuit for monitoring a support structure is provided. The resistance circuit may include a first set of resistors disposed at a belt-side and a second set of resistors disposed at a monitor-side. The first set of resistors may be configured to indicate one or more voltages thereacross corresponding to an effective resistance of the support structure. The first set of resistors may include at least one temperature-dependent resistor. The second set of resistors may be configured to indicate one or more voltages thereacross corresponding to an initial effective resistance of the support structure. The second set of resistors may include at least one switched resistor having an adjustable resistance capable of selectively approximating the initial effective resistance.

Abstract translation: 提供了一种用于监视支撑结构的电阻电路。 电阻电路可以包括设置在带侧的第一组电阻器和设置在监视器侧的第二组电阻器。 第一组电阻器可以被配置为指示对应于支撑结构的有效电阻的一个或多个电压。 第一组电阻器可以包括至少一个温度依赖电阻器。 第二组电阻器可以被配置为指示对应于支撑结构的初始有效电阻的一个或多个电压。 第二组电阻器可以包括至少一个具有能够选择性地接近初始有效电阻的可调电阻的开关电阻器。