Load distribution detecting system for elevator

• US 4,951,786 A
• Filed: 06/06/1989
• Issued: 08/28/1990
• Est. Priority Date: 06/09/1988
• Status: Expired due to Fees

• Current Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Original Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Inventors: Haraguchi, Hitoshi
• Primary Examiner(s): Skaggs, H. Grant
• Assistant Examiner(s): Noland, Kenneth
• Application Number:
  US07/362,115
• Time in Patent Office: 448 Days
• Field of Search: 187/1 R, 187/130, 187/131, 187/132, 187/139, 187/28, 187/31, 187/39, 187/51, 358/93, 358/108, 340/825.28, 340/825.29
• US Class Current: 187/392
• CPC Class Codes: B66B 1/3484 using load cells

Abstract

A load distribution detecting matrix is provided in the floor of an elevator cab. The elevator controller receives information from the matrix and can alter operation of the elevator in response to detection of predetermined load distribution characteristics.

Claims

1. An elevator control system for modifying operation of an elevator, said system comprising a matrix of sensor means associated with the floor of an elevator cab for detecting the location and shapes of loaded areas on the cab floor caused by passengers in the cab, and microprocessor means connected to said sensor means for altering elevator movement or door operation in response to reception of predetermined signal patterns from said sensor means signifying pre-inputted information relating to a type of passenger in the cab or a type of passenger movement in the cab.

2. The elevator control system of claim 1 wherein said sensor means is operable to detect the presence of a wheelchair in the cab, and wherein said microprocessor means is operable to delay cab door closing operation upon receipt of a wheelchair signal from said sensor means.

3. The elevator control system of claim 1 wherein said sensor means is operable to distinguish between adult male and adult female passengers in the cab.

4. The elevator control system of claim 3 wherein said sensor means is operable to detect random movement of adult male and female passengers in the cab, and said microprocessor means is operable to stop movement of the cab and open the cab and hall doors upon receipt of such a random movement signal from said sensor means.

5. The elevator control system of claim 1 wherein said sensor means is operable to distinguish between adult and children passengers in the cab.

6. The elevator control system of claim 5 wherein said microprocessor means is operable to detect multiple floor selector button actuation arising when one or more children are detected by said sensor means as the sole passengers in said cab whereupon said microprocessor means is operable to cancel all but one floor selection and retain said cab at said floor until the children exit said cab.

7. The elevator control system of claim 1 wherein said sensor means is further operable to detect the level of load in said loaded areas.