Elevator control system with image pickups in hall waiting areas and elevator cars

• US 5,258,586 A
• Filed: 03/20/1990
• Issued: 11/02/1993
• Est. Priority Date: 03/20/1989
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Komatsu, Chikara, Suzuki, Masato, Sakai, Yoshio, Nakamura, Kiyoshi, Inaba, Hiromi, Fujino, Atsuya, Kasai, Syoji, Nakata, Naofumi, Yamazaki, Masachika
• Primary Examiner(s): Stephan, Steven L.
• Assistant Examiner(s): Nappi, Robert
• Application Number:
  US07/496,294
• Time in Patent Office: 1,323 Days
• Field of Search: 187/111, 187/131, 187/124, 187/130, 187/121, 187/139, 187/105, 382/18, 382/27, 382/41, 364/200, 340/146, 367/93, 250/211 R, 250/234, 435/7.24, 356/39, 358/125
• US Class Current: 187/392
• CPC Class Codes: B66B 1/2458 For elevator systems with multiple shafts and a single car per shaft
• CPC Class Codes: B66B 1/34 Details , e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
• CPC Class Codes: B66B 1/3415 Control system configuration and the data transmission or communication within the control system
• CPC Class Codes: B66B 1/3476 Load weighing or car passenger counting devices B66B5/14 takes precedence
• CPC Class Codes: B66B 1/3484 using load cells
• CPC Class Codes: B66B 2201/102 Up or down call input
• CPC Class Codes: B66B 2201/104 Call input for a preferential elevator car or indicating a special request
• CPC Class Codes: B66B 2201/222 Taking into account the number of passengers present in the elevator car to be allocated
• CPC Class Codes: B66B 2201/405 by input of special passenger or passenger group

Abstract

An elevator control system for controlling movement of cages up and down in accordance with the situation of waiting persons in landing places or passengers in the cages detected by image pickup devices and other detecting devices includes first and second image processors, the image processing level of the second image processor being not lower than that of the first image processor. The system further includes an elevator controller for controlling movement of the cages up and down, the elevator controller including a device for applying the result of image processing performed by the first image processor to the control of the cages, and a device for applying the result of image processing performed by the second image processor to the control of the cages when the image processing is carried out based on the result of image processing performed by the first image processor and other information pertaining to passengers and waiting persons detected by the other detecting devices.

Claims

1. An elevator control system for controlling movement of cages up and down in elevator shafts of a building, comprising:

image pickup means provided in at least one of the inside of each cage and the landing place of each floor of said building where a corresponding one of said cages stops;

first image processing means for processing images picked up by said image pickup means to obtain first information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages; and

second image processing means having an image processing level higher than the image processing level of said first image processing means; and

elevator control means including

means for detecting at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages,

means for determining whether a discrepancy exists between an output of said detecting means and said first information obtained by said first image processing means,

means for causing said second image processing means to process an image processed by said first image processing means and resulting in a discrepancy to obtain second information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages when said determining means determines that a discrepancy exists, and

means for controlling movement of said cages based on said first information obtained by said first image processing means when said determining means determines that a discrepancy does not exist, and for controlling movement of said cages based on said second information obtained by said second image processing means when said determining means determines that a discrepancy does exist.

2. An elevator control system according to claim 1, in which said first and second image processing means calculate the number of passengers in each of said cages and the number of waiting persons in each of said landing places based on image processing.

3. An elevator control system according to claim 2, in which the number of passengers and the number of waiting persons are calculated as to a group of grownups and a group of children respectively.

4. An elevator control system according to claim 1, in which said first image processing means performs image processing while classifying each of the number of passengers and the number of waiting persons into at least four groups, namely, "no person", "a small number of persons", "a medium number of persons", and "a large number of persons".

5. An elevator control system according to claim 1, in which the image processing to be performed by said second image processing means is designated by a selected one of (1) said elevator control means and (2) said second image processing means.

6. An elevator control system according to claim 5, in which a call button is provided in each landing place, and in which the selected one of (1) said elevator control means and (2) said second image processing means includes means for causing said second image processing means to perform image processing when a number of times said call button has been pushed is larger than the number of waiting persons in the corresponding landing place detected by said first image processing means.

7. An elevator control system according to claim 5, in which a call button is provided in each landing place, and in which the selected one of (1) said elevator control means and (2) said second image processing means includes means for causing said second image processing means to perform image processing when at least one waiting person is detected in a landing place by said first image processing means and the corresponding call button has not been pushed.

8. An elevator control system according to claim 5, in which a special call button is provided in at least one of each landing place and the inside of each cage, and in which the selected one of (1) said elevator control means and (2) said second image processing means includes means for causing said second image processing means to perform image processing when said special call button is pushed.

9. An elevator control system according to claim 8, in which said special call button serves as a call button for a disabled person, and in which said first and second image processing means provide images for determining whether said disabled person is in a wheelchair or not.

10. An elevator control system according to claim 1, in which said elevator control means further includes individual elevator control means for controlling the respective cages and group supervisory means for performing general control of said individual elevator control means, and in which said group supervisory means includes means for causing said second image processing means to perform image processing.

11. An elevator control system according to claim 10, in which when said second image processing means detects too many waiting persons in a landing place of a floor to be served by one cage, said group supervisory means apportions at least two cages to corresponding landing places of the same floor.

12. An elevator control system according to claim 1, in which indicators are provided in respective landing places and indicator control means for controlling the contents of said indicators are connected to said elevator control means, and in which said indicator control means provides instructions to said indicators for display based on information pertaining to running patterns of the cages and waiting persons in the respective landing places.

13. An elevator control system according to claim 12, in which said indicator control means causes said indicators to display information pertaining to the running patterns of the respective cages.

14. An elevator control system according to claim 13, in which said indicator control means causes said indicators to display pictorial patterns when at least one of said first and second image processing means detects the presence of at least one child.

15. An elevator control system according to claim 1, in which a plurality of image pickup means are connected to said first image processing means.

16. An elevator control system for controlling movement of cages up and down in elevator shafts of a building, comprising:

image pickup means provided in at least one of the inside of each cage and the landing place of each floor of said building where a corresponding one of said cages stops;

image processing means for processing images picked up by said image pickup means with a first image processing level to obtain first information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages, and for processing images picked up by said image pickup means with a second image processing level higher than said first image processing level to obtain second information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages; and

elevator control means including

means for detecting at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages,

means for determining whether a discrepancy exists between an output of said detecting means and said first information obtained by using said first image processing level,

means for causing said image processing means to process, by using said second image processing level, an image processed by using said first image processing level and resulting in a discrepancy to obtain said second information when said determining means determines that a discrepancy exists, and

means for controlling movement of said cages based on said first information obtained by using said first image processing level when said determining means determines that a discrepancy does not exist, and for controlling movement of said cages based on said second information obtained by using said second image processing level when said determining means determines that a discrepancy does exist.

26. An elevator control system according to claim 16, wherein said image processing means includes a plurality of first image processing means equal in number to said image pickup means for processing images picked up by respective ones of said image pickup means by using said first image processing level, said plurality of first image processing means being provided in at least one of the inside of each cage and the landing place of each floor of said building where a corresponding one of said cage stops;

and

second image processing means connected to said plurality of first image processing means for processing images picked up by all of said image pickup means by using said second image processing level, said second image processing level being more accurate than said first image processing level, said second image processing means being provided in a machine chamber of said elevator control system.

17. An elevator control system for controlling movement of cages up and down in elevator shafts of a building comprising:

image pickup means provided in the inside of each cage and in the landing place of each floor of said building where a corresponding one of said cages stops;

image processing means for processing images picked up by said image pickup means with first and second image processing levels different from each other, said second image processing level being higher than said first image processing level; and

elevator control means including every-floor stop means for confirming the fact that the number of passengers in a cage has become two on the basis of the image processing by using said second image processing level in the case where it is expected that the number of passengers in said cage will become two on the basis of the image processing by using said first image processing level, and for controlling said cage to stop at every floor from the point of time when the number of passengers in said cage has become two to the point of time when said cage reaches a floor designated by the passengers in said cage.

18. An elevator control system for controlling movement of cages up and down in elevator shafts of a building, comprising:

a plurality of image pickup means provided in landing places of floors of said building where said cages stop;

a plurality of first image processing means equal in number to said plurality of image pickup means for processing images picked up by respective ones of said plurality of image pickup means to obtain first information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages;

second image processing means connected to said plurality of first image processing means for processing images picked up by all of said plurality of image pickup means to obtain second information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages;

a transmission line for connecting each of said first image processing means to said second image processing means so as to transmit images processed by each of said first image processing means and images picked up by each of said plurality of image pickup means to said second image processing means; and

elevator control means including

means for detecting at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages,

means for determining whether a discrepancy exists between an output of said detecting means and said first information obtained by each of said first image processing means,

means for causing said second image processing means to process an image processed by one of said first image processing means and resulting in a discrepancy to obtain said second information when said determining means determines that a discrepancy exists, and

means for controlling movement of said cages based on said first information obtained by each of said first image processing means when said determining means determines that a discrepancy does not exist, and for controlling movement of said cages based on said second information obtained by said second image processing means in place said first information obtained by said one of said first image processing means when said determining means determines that a discrepancy does exist.

19. An elevator control system according to claim 18, in which said plurality of first image processing means are connected to said second image processing means through a common transmission line, and in which said second image processing means is connected to said elevator control means through another transmission line.

20. An elevator control system according to claim 18, in which image display means is connected to said second image processing means so that images obtained by each of said image pickup means are transmitted from said second image processing means to said image display means so as to be displayed by the image display means.

21. An elevator control system according to claim 18, in which each of said first image processing means includes means for storing an image processed by said first image processing means as an original image to be processed by said second image processing means.

22. An elevator control system for controlling movement of cages up and down in elevator shafts of a building, comprising:

image pickup means provided in the inside of each of said cages and in landing places of each floor of said building where said cages stop;

a plurality of first image processing means for processing images picked up by said image pickup means to obtain first information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages;

second image processing means for processing images picked up by said image pickup means at a higher level than that of said first image processing means to obtain second information indicative of at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages;

a first transmission line for connecting each of said first image processing means to said second image processing means;

indicators provided in said landing places;

indicator control means for causing said indicators to display information such as running conditions of said cages and waiting persons in said landing places;

image display means for displaying the situation of waiting persons in the respective landing places and passengers in said cages by means of images obtained by said image pickup means;

elevator control means including

means for detecting at least one of (a) presence/absence of passengers in said cages, (b) presence/absence of persons waiting for said cages, (c) a quantity of passengers in said cages, and (d) a quantity of persons waiting for said cages,

means for determining whether a discrepancy exists between an output of said detecting means and said first information obtained by each of said first image processing means,

means for causing said second image processing means to process an image processed by one of said first image processing means and resulting in a discrepancy to obtain said second information when said determining means determines that a discrepancy exists, and

means for controlling movement of said cages based on said first information obtained by each of said first image processing means when said determining means determines that a discrepancy does not exist, and means for controlling movement of said cages based on said second information obtained by said second image processing means in place of said first information obtained by said one of said first image processing means when said determining means determines that a discrepancy does exist; and

a second transmission line for connecting said elevator control means, said second image processing means, said indicator control means, and said image display means to each other.

23. An elevator control system for controlling movement of cages up and down in elevator shafts of a building comprising:

image pickup means provided in the inside of said cages;

first image processing means for processing images picked up by said image pickup means to obtain first information indicative of a quantity of passengers in said cages;

second image processing means having an image processing level higher than that of said first image processing means for processing images picked up by said image pickup means to obtain second information indicative of a quantity of passengers in said cages;

load weight detecting means provided under respective bottoms of said cages for detecting load weights of said cages and producing third information indicative of a quantity of passengers in said cages based on the detected load weights; and

elevator control means including means for controlling movement of said cages based on said first information obtained by said first image processing means when said first information obtained by said first image processing means substantially agrees with said third information produced by said load weight detecting means, and means for controlling movement of said cages based on said second information obtained by said second image processing means when said first information obtained by said first image processing means disagrees with said third information produced by said load weight detecting means.

24. An elevator control system according to claim 23, in which said load weight detecting means is made higher in accuracy than said first image processing means relative to the quantity of passengers in said cages, and in which said second image processing means is made higher in accuracy than said load weight detecting means relative to the quantity of passengers in said cages.

25. An elevator control system according to claim 23, in which the comparison between said first information obtained by said first image processing means and said third information produced by said load weight detecting means is carried out when said third information produced by said load weight detecting means is indicative of a quantity of passengers representing less than a medium degree of crowdedness.