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US4448286A
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Elevator group control system
Assignee: Hitachi Ltd
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Filing: 1982-07-12
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Granted: 1984-05-15
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Expires: 2002-07-12
Abstract
Abstract An elevator group control system in which, in response to origination of a new hall call, a floor-stop call evaluation factor indicative of the degree of saving of power consumption is computed besides a serviceability evaluation factor indicative of the passenger serviceability, for example, the waiting time. One of these evaluation factors is weighted relative to the other to compute an allocation evaluation factor indicative of the suitability of allocation of the new hall call to one of the elevator cars, and the new hall call is allotted to the elevator car which is decided to be most suitable for the service in respect of the value of the allocation evaluation factor.
Inventors
- 👤 Soshiro Kuzunuki
- 👤 Kotaro Hirasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:54
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B1/2408; B66B1/2458; B66B2201/00; B66B2201/10; B66B2201/102; B66B2201/20; B66B2201/211; B66B2201/216; B66B2201/222; B66B2201/40; B66B2201/403; Y; Y02; Y02B; Y02B50/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
An elevator group control system comprising a plurality of elevator cars arranged for movement across a plurality of floors of a building, hall call registering means disposed at each of the floors to originate a hall call for calling one of said elevator cars toward said floor, car call registering means disposed in each of said elevator cars for instructing target floors, allocation evaluation factor computing means for computing for each of said elevator cars an allocation evaluation factor indicative of the suitability of allocation of a newly originated hall call to said elevator car, and hall call allotting means for allotting said new hall call to the elevator car which is decided to be most suitable for the service in respect of the value of the allocation evaluation factor, said allocation evaluation factor computing means including means for weighting the output signal from floor-stop probability evaluation factor computing means relatively to the output signal from serviceability evaluation factor computing means, and varying means for varying the traffic demand and varying the value of the relative weight depending on the detected traffic demand.
Claim 2
Dependent Claim
183 words
An elevator group control system comprising a plurality of elevator cars arranged for movement across a plurality of floors of a building, hall call registering means disposed at each of the floors to originate a hall call for calling one of said elevator cars toward said floor, car call registering means disposed in each of said elevator cars for instructing target floors, allocation evaluation factor computing means for computing for each of said elevator cars an allocation evaluation factor indicative of the suitability of allocation of a newly originated hall call to said elevator car, and hall call allotting means for allotting said new hall call to the elevator car which is decided to be most suitable for the service in respect of the value of the allocation evaluation factor, said allocation evaluation factor computing means including means for weighting the output signal from floor-stop probability evaluation factor computing means relatively to the output signal from serviceability evaluation factor computing means, and varying means for varying the traffic demand and varying the value of the relative weight depending on the detected traffic demand.
Claim 3
Dependent Claim
23 words
An elevator group control system according to claim 1, wherein said varying means is traffic demand detecting means for detecting the traffic demand.
Claim 4
Dependent Claim
50 words
An elevator group control system according to claim 1, wherein said floor-stop call evaluation factor computing means includes means for computing the floor-stop probability of each of said elevator cars, means for weighting the computed floor-stop probability, and means for summing the weighted floor-stop probability over a predetermined floor range.
Claim 5
Dependent Claim
36 words
An elevator group control system according to claim 3, wherein the relative weight provided by said weighting means and said predetermined floor range are varied depending on the output signal from said traffic demand detecting means.
Claim 6
Dependent Claim
25 words
An elevator group control system according to claim 2, wherein said traffic demand detecting means detects the volume of traffic or the number of passengers.
Claim 7
Dependent Claim
18 words
An elevator group control system according to claim 2, wherein said traffic demand detecting means is a clock.
Claim 8
Dependent Claim
30 words
An elevator group control system according to claim 2, wherein said traffic demand detecting means is an externally controllable setting unit such as a variable resistor or a change-over switch.
Claim 9
Dependent Claim
32 words
An elevator group control system according to claim 2, wherein the weight used for weighting said floor-stop probability is selected to be equal at all the floors within said predetermined floor range.
Claim 10
Dependent Claim
40 words
An elevator group control system according to claim 2, wherein the weight used for weighting said floor-stop probability is selected to progressively decrease with the increase in the distance from the floor from which the new hall call is originated.
Claim 11
Dependent Claim
73 words
An elevator group control system according to claim 2, wherein the weight used for weighting said floor-stop probability is selected to be equal at all the floors in the floor range backward of the floor from which the new hall call is originated, and selected to progressively decrease with the increase in the distance from the new hall call originated floor in the floor range forward of the new hall call originated floor.
Claim 12
Dependent Claim
32 words
An elevator group control system according to claim 1, wherein said serviceability evaluation factor computing means computes the forecast waiting time at the floor from which the new hall call is originated.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |