JPS6210913B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for detecting the number of customers waiting in an elevator hall.

Elevators are controlled using elevator traffic information such as car position, hall call, and car call. Furthermore, recently, it has been proposed to install a number of people detection device at a boarding hall and use the number of passengers waiting at the boarding hall as new traffic information. Some of these people detection devices utilize energy waves such as ultrasonic waves and electromagnetic waves. On the other hand, in order to ensure safety near the entrances and exits of cars, we have installed entrance/exit safety devices that use the above energy waves to detect passengers and control the opening and closing of doors, for example, and use the above energy waves to obtain new traffic information. A passenger number detection device is used to detect the number of people in the car. These improvements have further improved elevator services.

That is, as shown in FIG. 1, a number of people detecting device 1 is installed in a hall, and an energy wave 1a is transmitted to the hall, and the number of waiting passengers at the hall is detected from the reflected wave. In addition, doorway safety devices 4 and 5 are installed above the entrances and exits of cars 2 and 3, and energy waves 4a and 5a are transmitted to the landings, respectively, and the reflected waves are used for cars 2 and 3.
The system detects whether there are passengers boarding the vehicle and controls the opening and closing of the doors.

However, these energy waves 1a, 4a, 5a
If the frequencies, etc. of It happens that one energy wave 1a is detected. Therefore, there is a risk that an incorrect number of waiting passengers will be detected and the elevator service will be degraded, or that if passengers continue to be present at the entrance to the car 2, it will be incorrectly detected and the car 2 will not be able to start.

This invention is intended to improve the above-mentioned problem, and the operation of the passenger detection device is stopped when the car stops at the landing and the door is open, thereby preventing false detection of each other even when the door is open. The purpose of this invention is to provide a device for detecting the number of customers waiting.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In Figure 2, (+) and (-) are DC power supplies, 1A is provided in the number of people detection device 1, and while voltage is applied to terminal A, it commands the transmission of energy wave 1a, and the number of people is determined from the reflected wave. , and when the voltage is cut off, it commands to stop transmission and also stops the above calculation. 7 is a door open detection relay contact that opens when the door of car 2 is closed and closes when the door opens. , 8 is a landing detection relay contact that closes when the car 2 is landing on the floor where the people detection device 1 is installed; 9
is an operation control relay, and 9a is its normally closed contact.

When the car 2 has not landed on this floor or the door is not open, the landing detection relay contact 8 or the door open detection relay contact 7 is open, so the operation control relay 9 is deenergized. , contact 9a is closed. Therefore, the number of people detection device 1 transmits the energy wave 1a to the hall, and the number of waiting passengers is detected as described above.

When the car 2 arrives at this floor and the door opens, the landing detection relay contact 8 and the door open detection relay contact 7 are closed, so the operation control relay 9 is energized and the contact 9 is closed.
a is open. Now, the number of people detection device 1 stops operating, and the energy wave 1a is no longer transmitted. On the other hand, the doorway safety device 4 transmits an energy wave 4a to control the opening and closing of the door as described above to ensure the safety of passengers. However, since the energy wave 1a is not transmitted from the number of people detection device 1, the safety device 4 will not malfunction. Further, the energy wave 4a from the safety device 4 is not erroneously detected by the number of people detection device 1. Furthermore, while the door of car 2 is open,
Although the operation of the number of people calculation circuit 1A stops, the number of people just before the door of car 2 opens has already been detected, and after the door of car 2 opens, there will be a mixture of passengers getting on and off at the landing, and the true number of passengers will be mixed. Since it becomes difficult to detect the number of passengers, even if the number of passengers calculation circuit 1A stops operating during this period, no problem will occur in terms of control. The same applies when the car 3 lands on the floor.

Further, when a passenger number detection device using energy waves is used in the cars 2 and 3, the present invention can also be applied in order to avoid being affected by the energy waves.

As explained above, in this invention, when a car lands on a landing where a passenger detection device is installed and the door is open, the operation of the passenger detection device is stopped and only the passenger detection device at the car entrance is operated. This prevents the elevator service from being degraded due to an incorrect number of waiting passengers being detected, or preventing the car from being unable to start due to a false detection if a passenger continues to be present at the car entrance. can.

In addition, when the car is on the floor and the door is open, passengers are mixed together, making it difficult to detect the true number of passengers waiting at the boarding point. However, during this time, the number of people detecting devices is stopped, making it inaccurate. It is also possible to prevent the number of waiting customers from being detected.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view of an elevator hall, and FIG. 2 is a circuit diagram showing an embodiment of an elevator waiting number detection device according to the present invention. 1... Number of people detection device, 1A... Number of people calculation circuit,
1a... Energy wave transmission wave, 2, 3... Elevator car, 4, 5... Entrance/exit safety device, 4a,
5a... Transmission wave of energy wave, 7... Door open detection relay contact, 8... Landing detection relay contact, 9... Operation control relay. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A number of people detection device that detects the number of people at the landing by transmitting and receiving energy waves to the landing, and is installed in the car and detects passengers by transmitting and receiving energy waves of the same type as the above energy waves. A passenger detection device, a door open detection device that operates when the car has landed on the landing and the door is open, and a control device that stops the number of people detection operation of the number of people detection device when the door open detection device operates. Elevator waiting number detection device.