Claims
- 1. An electronic computerized arrangement for selecting an elevator load weight bypass threshold, comprising:
- an electronic computer including a memory;
- a plurality of elevator load weight bypass thresholds stored within said memory; and
- instructions for selecting one of said elevator load weight bypass thresholds from among said plurality, the selection being dependent upon a time of day that said instructions are executed by said electronic computer and upon an estimated amount of floor space available within an elevator car, said instructions being stored within said memory, said estimated amount of floor space available corresponding to a point of a fuzzy function, said fuzzy function being stored within said memory, said memory further including instructions for controlling the elevator car to bypass a hall call while a load in the elevator car exceeds a selected one of said elevator load weight bypass thresholds.
- 2. An arrangement as claimed in claim 1, wherein said time of day is a time of day within a period beginning at 4:30 p.m. and ending at 6:30 p.m.
- 3. An arrangement as claimed in claim 1, wherein said time of day is a time of day within a period beginning at 7:30 a.m. and ending at 9:00 a.m.
- 4. An arrangement as claimed in claim 1, wherein said plurality of elevator load weight bypass thresholds includes a first threshold for an up direction of the elevator car and a second threshold for a down direction of the elevator car.
- 5. An arrangement as claimed in claim 4, wherein said first threshold differs from said second threshold.
- 6. An electronic computerized method for selecting an elevator load weight bypass threshold, comprising:
- providing an electronic computer having a memory which includes a plurality of elevator load weight bypass thresholds, said memory further including instructions for performing at least steps (i)-(vi) of said method;
- (i) ascertaining a time of day;
- (ii) ascertaining load weights of two elevator cars located at a building lobby;
- (iii) summing the load weights;
- (iv) comparing the resultant sum against a fuzzy function;
- (v) selecting a load weight bypass threshold from among said plurality of thresholds depending upon the result of said comparing step, and
- (vi) controlling at least one of the elevator cars to bypass a hall call while a load in the car exceeds the threshold selected in said (v) selecting step.
- 7. A method as claimed in claim 6, wherein said comparing step applying a maximum membership method to a fuzzy membership set.
- 8. A method as claimed in claim 6, wherein said step of ascertaining the load weights includes ascertaining the load weights of two successive departures of the same elevator car from the building lobby.
- 9. A method as claimed in claim 6, wherein said step of ascertaining the load weights includes ascertaining the load weights of different elevator cars departing from the building lobby.
- 10. A method as claimed in claim 6, wherein said step of ascertaining a time of day includes ascertaining a time of day within a period beginning at 4:30 p.m. and ending at 6:30 p.m.
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 08/044,334, filed on Apr. 7, 1993, now abandoned.
US Referenced Citations (35)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2115578 |
|
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
44334 |
Apr 1993 |
|