Status line monitoring system and method of using same

• US 4,823,914 A
• Filed: 06/24/1987
• Issued: 04/25/1989
• Est. Priority Date: 06/24/1987
• Status: Expired due to Term

• Current Assignee: Elevator Performance Technologies Incorporated
• Original Assignee: Elevator Performance Technologies Incorporated
• Inventors: Boden, Scott T., Perry, Lloyd F., McKinney, Robert C.
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Duncanson, Jr., W. E.
• Application Number:
  US07/066,014
• Time in Patent Office: 671 Days
• Field of Search: 187/130, 187/133
• US Class Current: 187/393
• CPC Class Codes: B66B 5/0006 Monitoring devices or performance analysers B66B5/02 takes precedence
• CPC Class Codes: B66B 5/0037 Performance analysers

Abstract

A monitor system for use with a plurality of segregated groups of controls, each group having corresponding status control lines indicative of the operational status of an elevator, an escalator, or the like. The monitor system includes a series of monitor devices for responding to the status control lines. Each one of the monitor devices corresponds to an individual one of the group of controls, for diagnosing the operational problems associated therewith. A computing device is located remotely from the groups of controls, for monitoring them remotely and continuously. A plurality of individual single communication links correspond individually to one of the monitor devices, for facilitating connection selectively and individually of the monitor devices to the remote computing device.

Claims

1. A system for use with a plurality of segregated groups of controls, each group of controls having corresponding status control lines indicative of the operational status of an elevator, an escalator, or the like, the system comprising:

a series of monitor devices for monitoring the status control lines;

each one of said monitor devices corresponding to an individual one of the group of controls, for detecting operational problems associated therewith;

each one of said monitor devices having means for compiling said operational problems;

each of said monitor devices having means being responsive to the complied operational problems for diagnosing said problems to determine specific individual operational fault conditions associated with and corresponding to an individual one of the status control lines;

each of said monitor devices having means for generating fault message report information based on said operational problems, said report message identifying the diagnosed fault condition and the specific location of the operational problem.

2. A system according to claim 1, further including means for receiving the fault message report information generated by said monitor device;

a plurality of individual single communication links corresponding individually to one of said monitor devices, for facilitating connection selectively and individually one of said monitor devices to the means for receiving fault message reports;

wherein each one of said monitor devices includes one master module for diagnosing operational problems associated with the corresponding one of the group of controls;

a plurality of input and output ports; and

a modem connected to one of said output ports, for connecting in communication said master module and said receiving means, over one of said individual single communication links.

3. A system according to claim 2, further including at least one slave module for diagnosing operational problems associated with the corresponding one of the groups of controls;

each one of said slave modules includes a plurality of input and output ports, for connecting in communication said slave modules and said master module.

4. A system according to claim 3, wherein said slave modules are connected sequentially in communication with one another, and with said master modules;

and

wherein the output port of only one of said slave modules is connected in communication with the input port of said master module.

5. A system according to claim 1, further comprising:

computing means including a computing device, and a computer software program adapted to control the operation of said computing device, for monitoring and diagnosing the status line said computing device including means for detecting a door switch failure, floor detecting means for detecting the identity of the floor of a building where the elevator car was located at the time of failure of said door switch, and means for determining that the failed door switch is located on the floor determined by the floor detecting means for purposes of identifying said specific location of the operational problem.

6. In a system according to claim 1, wherein each of said monitoring devices further includes autoranging circuit means for enabling said monitor devices to be connected to any alternating current or direct current type of segregated group of controls.

7. A method of using a monitor system in conjunction with a plurality of segregated groups of controls, each group of controls having corresponding status control lines indicative of the operational status of an elevator, an escalator, or the like, the method comprising:

monitoring the status control lines;

detecting operational problems on said monitored status control lines;

diagnosing said operational problems associated with each one of a series of monitor devices corresponding to an individual one of the groups of controls;

compiling said operational problem for diagnosing operational fault conditions;

diagnosing said compiled operational problems for fault conditions associated with and corresponding to an individual one of the status control lines;

generating fault message report information based on said diagnosed operational problems;

said fault message report identifying the diagnosed fault conditioning and the specific location of the operational problems.

8. In a monitoring system having a plurality of segregated groups of controls located in a corresponding plurality of remotely located buildings, each group of controls having corresponding status control lines indicative of the operational status of an elevator, an escalator or the like, the system comprising:

a plurality of monitoring means, each monitoring means being associated with a specific one of said group of controls and having monitor computing means for receiving and sending fault messages associated therewith;

at least one remotely located computing means for receiving and transmitting fault messages in response to messages received from said monitoring means;

said remotely located computing means including means responsive to said messages received from said monitoring means for sending a call-in message for a service technician;

said remotely located computing means having means for causing the transmission of a voice synthesizer message fault report including fault information for the service technician.

9. In a system according to claim 8, wherein said remotely located computing means includes means for determining whether the received fault message was generated by a service technician or alternately by one of said monitoring means;

and

program means responsive to said determining means for causing the execution of a call-in routine responsive to the receipt of a fault message not generated by a service technician for sending said call-in message to a service technician.

10. In a system according to claim 8, further including means for causing the transmission of a fault message to the monitor computing means indicative of a local fault condition.

11. A system for use with a plurality of segregate groups of controls, each group of controls having corresponding status control lines indicative of the operational status of an elevator;

the system comprising;

a series of monitor devices for monitoring the status control lines and for generating fault message report information associated with said status control lines;

each one of said monitor devices corresponding to an individual one of the group of controls, for detecting and determining a time delay has occurred in the closure of a monitored door switch, said door switch being coupled to an individual one of said status control lines;

means for determining that said time delay has occurred beyond a predetermined period of time; and

means responsive to said timing means for determining that said door switch is failing to cause a fault message report to be generated.

12. A system according to claim 11, wherein each one of said monitor devices further includes means for generating fault message report information based on the failure to generate a fault report message in response to determining that said door switch failure failed to cause a fault message report to be generated, said fault message report being indicative of a potential fault condition.

13. A system for use with a plurality of segregated groups of controls, each group of controls having corresponding status control lines indicative of the operational status of an elevator, an escalator or the like, the system comprising:

a series of monitor devices for responding to the status control lines;

each one of said monitor devices corresponding to an individual one of the group of controls for monitoring the operational problems associated therewith;

each one of said monitor devices corresponding to an individual one of the group of controls for detecting an operational problem associated therewith;

each one of said monitor devices including means for detecting that a detected operational problem has been corrected within a predetermined period of time;

means for determining the number of times said detected operational problem has corrected itself; and

means for generating a fault message report in response to said determining means generating a signal indicative of a fault condition, said fault message report being indicative of an intermittent fault condition.

14. A system for use with a plurality of segregated groups of controls, each group of controls having corresponding status control lines indicative of the operational status of an elevator, an escalator or the like, the system comprising:

a series of monitor devices for responding to the status control lines;

each one of said monitor devices corresponding to an individual one of the group of controls for monitoring the operational problems associated therewith;

each one of said monitor devices corresponding to an individual one of the groups of controls includes first means for detecting a status control line condition indicative of an elevator car moving and a closed gate switch;

second means for detecting a status control line condition indicative of a door switch opening for a predetermined time only; and

means for determining a clipped door lock condition has occurred in response to said first and second means.

15. A system according to claim 14, further including means for generating a fault report message in response to said clipped door lock condition, said fault message report being indicative of said clipped door fault condition.

16. A system for use with a plurality of segregated groups of controls, each group of controls having corresponding status control lines indicative of the operational status of an elevator, an escalator or the like, the system comprising:

a series of monitor devices for responding to the status control lines;

each one of said monitor devices corresponding to an individual one of the group of controls for monitoring the operational problems associated therewith;

each one of said monitor devices having one master module for diagnosing operational problems associated with the corresponding one of the group of controls;

each one of said monitor devices having at least one slave module for diagnosing operational problems associated with the corresponding one of the groups of controls;

each one of said slave modules includes a plurality of input and output ports for connecting sequentially in communication one slave module with another; and

wherein one output port of an individual single slave module is connected sequentially in communication with one input port of said master module;

each one of said slave modules having means for communicating through its output port the diagnosed operational problems associated with one of the groups of controls of one of the slave modules connected sequentially on its input port;

each one of said master module having means responsive to a diagnosed operational problem received on its input port for determining a fault condition associated with and corresponding to a specific one of said status control lines; and

each of said monitor devices having means for generating fault message report information based on said operational problems, said report message identifying the diagnosed fault condition and the specific location of the operational problem.