| (19) |
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(11) |
EP 0 739 848 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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13.11.1996 Bulletin 1996/46 |
| (43) |
Date of publication A2: |
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30.10.1996 Bulletin 1996/44 |
| (22) |
Date of filing: 23.04.1992 |
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| (51) |
International Patent Classification (IPC)6: B66B 1/20 |
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| (84) |
Designated Contracting States: |
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DE FR GB |
| (30) |
Priority: |
29.04.1991 US 693181
29.04.1991 US 693169
29.04.1991 US 693177
29.04.1991 US 693178
29.04.1991 US 693179
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| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
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92401170.3 / 0511904 |
| (71) |
Applicant: OTIS ELEVATOR COMPANY |
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Farmington, CT 06032 (US) |
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| (72) |
Inventors: |
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- Sirag, David J., Jr.
South Windsor,
Connecticut 06074 (US)
- Weisser, Paul T., Jr.
South Windsor,
Connecticut 06074 (US)
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| (74) |
Representative: Jolly, Jean-Pierre et al |
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Cabinet Jolly
54, rue de Clichy
75009 Paris
75009 Paris (FR) |
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Remarks: |
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This application was filed on 15 - 07 - 1996 as a divisional application to the application
mentioned under INID code 62. |
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| (54) |
Method of determining an elevator system trafic mode |
(57) In a elevator system, the traffic mode is determined in accordance with a method
comprising the steps of :
setting an up-peak quantity which varies according to the number and frequency of
elevator passengers departing from a building lobby ;
setting a down-peak quantity which varies according to the number and frequency of
elevator passengers arriving at the building lobby ;
setting an up-off-peak quantity which varies inversely according to the number and
frequency of elevator passengers departing from a building lobby ;
setting a down-off-peak quantity which varies inversely according to the number and
frequency of elevator passengers arriving at the building lobby ;
setting an off-peak quantity equal to the maximum of said up-off-peak quantity and
said down-off-peak quantity ; and
forming a fuzzy logic set indicative of the elevator traffic mode, said set having
basis elements corresponding to up, down, and off-peak traffic modes and having respective
degrees of membership proportional to said up, down, and off-peak quantities.
