JP2013006639A - Elevator system, and power saving method of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator the LED display of which is lit in a dimmed manner with a degree of freedom without causing such deterioration in services that the display is hardly viewed and the position of the elevator can not be recognized correctly, and which can attain energy saving.SOLUTION: A dimmed lighting command to the LED displays 9-11 of the elevator is input from an input device 5 connected to an elevator controller 1, an input device connected to the terminal 2 of an elevator car and input devices 7, 8 connected to terminals 3, 4 of a hall. When the input of the dimmed lighting command from any of the input devices is detected, the LED displays 9-11 are lit in a dimmed manner by duty control or the like. After the lapse of the dimmed lighting time specified by the input device, the lighting states of the LED displays 9-11 are returned to normal lighting states.

Description

  The present invention relates to an elevator system including an LED display installed in a hall or an elevator car, and an elevator power saving method.

  As a prior art, Patent Document 1 describes saving energy by switching the lighting mode of the display from full lighting to thinning lighting or a light emitting color with low power consumption when the elevator traffic demand is quiet.

JP 2006-36382 A

  In the prior art disclosed in Patent Document 1, when an elevator is used when traffic demand is quiet, it is difficult to see the display and the position of the elevator cannot be accurately grasped if the display content of the display is thinned and lit. Service degradation occurs. Further, there is a problem that the elevator manager or the like cannot arbitrarily dimm the display content of the display.

  An object of the present invention is to provide an elevator system or an elevator power saving method that can be executed arbitrarily by an elevator administrator and can save energy while suppressing a decrease in service to the user.

  In order to achieve such an object, in a preferred embodiment of the present invention, an LED display installed in an elevator hall and / or car is provided with a display for lighting and displaying operation information and / or general information. In an elevator, the LED indicator is turned on by receiving a dimming lighting command by an artificial operation and turning on the LED indicator in response to the input of the dimming lighting command. And

  Also, in a preferred embodiment of the present invention, the LED display is returned to normal lighting under a predetermined condition while the LED display is dimly lit.

  In a specific embodiment of the present invention, the predetermined condition is that the dimming lighting has passed the scheduled duration, the artificially commanded duration of dimming lighting has expired, or A method of returning the LED display to normal lighting can be employed based on any one of the instructions that artificially stop the dimming lighting or a combination thereof.

  The dimming control of the LED display in the present invention is a duty control for changing an ON current time width with respect to an ON / OFF current cycle passed through the LED display, a current value control for reducing a current value passed through the LED display, or It is desirable to employ a combination of these two controls.

  According to a preferred embodiment of the present invention, it is possible to save energy while suppressing a decrease in service to the user.

  Other objects and features of the present invention will be clarified in the embodiments described below.

1 is an overall schematic configuration diagram of an elevator system according to an embodiment of the present invention. 1 is an external view of an input device according to an embodiment of the present invention. The external view of the input device by the other Example of this invention. The processing flow figure of the elevator system by one Example of this invention. The current waveform figure at the time of employ | adopting a duty system as 1st Embodiment of the dimming lighting of the LED display by this invention. The current waveform figure at the time of employ | adopting variable control of the electric current value sent through an LED display as 2nd Embodiment of the dimming lighting of the LED display by this invention. FIG. 7 is a current waveform diagram when a combination of the duty method of FIG. 5 and the current value variable control of FIG. 6 is adopted as a third embodiment of dimming lighting of the LED display according to the present invention. The current waveform figure at the time of employ | adopting the control which lightes an LED display intermittently in a normal state during the dimming lighting as 4th embodiment of the dimming lighting of the LED display by this invention.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is an overall schematic configuration diagram of an elevator system according to an embodiment of the present invention. In FIG. 1, the elevator control device 1 includes a CPU 12, a communication circuit unit 13, an input circuit unit 14, and a memory 15. The elevator control device 1 is connected to hall terminals 3 and 4 via a communication line 16 and is connected to a car terminal via a communication line 17. 2 is connected. The hall terminals 3 and 4 include CPUs 31 and 41, communication circuit units 32 and 42, LED display driver circuit units 33 and 43, and input circuit units 34 and 44, respectively. The car terminal 2 includes a CPU 21, a communication circuit unit 22, and an LED display drive circuit unit 23. Further, the car LED display 9 is connected to the LED display drive circuit unit 23, and the Hall LED displays 10 and 11 are connected to the LED display drive circuit units 33 and 34, respectively. Furthermore, the input devices 5 to 8 are input to the CPUs 12, 21, 31 and 41 via the input circuit units 14, 24, 34 and 44, respectively.

  Operation information and / or general information is lit and displayed on the LED indicators 10 and 11 installed in the elevator hall and / or the LED indicator 9 installed in the car.

  In this embodiment, it is assumed that the same dimming lighting command can be input from any of the input devices 5 to 8, and when this dimming lighting command is given, the car LED display 9 and the hall LED display 10 , 11 are dimmed all at once.

  That is, in this embodiment, the input devices 5 to 8 for artificially commanding the dimming lighting with respect to the lighting of the LED indicators 9 to 11 and the dimming lighting command are input from the input device. Accordingly, LED display drive circuits 23, 33 and 43 for dimming the LED display are provided.

  When the LED indicators 9 to 11 are turned off in response to the dimming lighting command from the input devices 5 to 8, it is necessary to return the LED indicators to normal lighting under a predetermined condition. As one embodiment, it is desirable to return to a normal lighting state as a predetermined time elapses. On the other hand, as described below, it is also effective to specify the duration of dimming lighting by human operation.

  FIG. 2 is an external view of an input device according to an embodiment of the present invention. In this example, the input devices 5 to 8 shown in FIG. 1 are configured by the key switches 201 to 204, and the duration of dimming lighting is assigned to each of the key switches 201 to 204. That is, each of the input devices 5 to 8 includes four key switches 201 to 204, respectively, and can select a dimming duration of 2 hours, 4 hours, 6 hours, or 8 hours by selecting the switch.

  As a result, the LED display is dimmed for a specified time, and automatically returns to normal lighting as the specified time elapses.

  FIG. 3 is an external view of an input device according to another embodiment of the present invention. In this example, the input devices 5 to 8 are configured by key switches 301 and 302, and the duration of dimming lighting can be designated by the combination of ON / OFF of the switches 301 and 302. That is, as shown in the lower part of FIG. 3, the number of key switches can be reduced by specifying the duration of dimming lighting by the combination of ON and OFF of the key switches 301 and 302.

  In the above embodiment, the input devices 5 to 8 for manually instructing the dimming lighting and its duration for the lighting of the LED indicators 9 to 11 and the dimming lighting command from the input device. LED display drive circuit 23 for turning off the LED display in response to the input of the light and returning the LED display to normal lighting in accordance with the expiration of the duration of the dimming lighting, 33 and 43 are provided.

  FIG. 4 is a process flow diagram of the elevator control apparatus according to one embodiment of the present invention. The processing procedure of the present embodiment will be described along this processing flow.

  First, as an initial state, a counter value (hereinafter referred to as “count”) is stored in the memory 15 of the elevator control device 1. In order to clear count, count is set to 0 in step S101. Step S102 is a normal state, and a normal lighting command is transmitted from the CPU 12 of the elevator control device 1 to the CPUs 21, 31, and 41 of each terminal, and it is confirmed whether or not the key switch is ON in step S103.

  Here, the key switch signal of the input device 5 provided in the elevator control device 1 is taken into the CPU 12 via the input circuit unit 14 of the elevator control device 1. In addition, the key switch signal of the input device 6 connected to the car terminal 2 is temporarily captured by the CPU 21 of the car terminal 2. Further, the key switch signals of the input devices 7 and 8 connected to the hall terminals 3 and 4 are once taken in by the CPUs 31 and 41 of the hall terminals 3 and 4, respectively. All of these key switch signals, that is, the dimming lighting command, are transmitted to the CPU 12 of the elevator control device 1 and recognized as a unified dimming lighting command.

  On the other hand, when receiving the normal lighting command from the CPU 12 of the elevator control device 1, the CPUs 21, 31, and 41 of each terminal send the LED display drive circuit unit 23 to the LED displays 9, 10, and 11, respectively. , 33, 43 to perform normal lighting control. In step S103, when the CPU 12 detects that any of the key switches is turned on, in step S104, the time corresponding to each key switch is set as a predetermined value. For example, when the dimming 2 hour duration key switch 201 in the input device of FIG. 2 is turned on, the predetermined value is set to 2 hours. Next, in step S105, 1 is added to the current count, and in step S106, it is compared with the predetermined value set in step S104. Here, when the count is smaller than the predetermined value, the CPU 12 transmits a dimming lighting command to the CPUs 21, 31, and 41. On the other hand, when the CPU 21, 31, 41 receives the dimming lighting command from the CPU 12, the LED displays 9, 10, 11 are dimmed by the LED display drive circuit units 23, 33, 43, respectively.

  When the count reaches the predetermined value in step S106, the dimming lighting state has passed the specified time, so the process proceeds to step S109, and the CPU 12 issues a normal lighting command to the CPUs 21, 31, 41. It transmits, and the lighting state of LED indicator 9-11 is returned to normal lighting.

  In step S110, it is confirmed whether or not the key switch is turned off. That is, the input devices 5 to 8 can also input a dimming lighting stop command by artificially turning off the key switch that instructed the dimming lighting. As described above, the dimming lighting stop command input means is provided, and the LED display drive circuits 23, 33, and 43 can return the LED display to normal lighting in response to the dimming lighting stop command. .

  On the other hand, when receiving the normal lighting command from the CPU 12, the CPUs 21, 31, and 41 return the LED indicators 9, 10, and 11 to the normal state by the LED indicator drive circuit units 23, 33, and 43, respectively.

  If it is detected in step S110 that the key switch has been turned off, the process returns to step S101. Step S108 is for returning the LED display from the dimming state to the normal state, and once the dimming state has been reached, the key switch is turned off at an arbitrary timing as necessary. It is possible to return to the normal lighting state.

  Next, specific means for dimming the LED display will be described with reference to FIGS.

  FIG. 5 is a current waveform diagram when the duty method is adopted as the first embodiment of the dimming lighting of the LED display according to the present invention. In the illustrated example, the ON / OFF cycle is constant, and when the light is dimmed, the ON current time width t flowing through the LED display is shortened. For example, when the normal ON current time width t is 2 ms with respect to the ON / OFF current period 14 ms flowing through the LED display, if the ON current time width t is changed short to 0.2 to 0.75 ms, It can be dimmed and energy can be saved.

  Further, the OFF current in FIG. 5 may be a zero current or a minute current (pedestal current) of about 1/10. By passing a minute current (pedestal current) as the OFF current, it is possible to improve the noise resistance such as extending the life of the LED display and preventing the LED display from being turned on erroneously.

  FIG. 6 is a current waveform diagram in the case where variable control of the current value passed through the LED display is employed as a second embodiment of dimming lighting of the LED display according to the present invention. The LED indicator lighting method is always on. For example, as shown in the figure, when 100% ON current is always applied and dimming is desired, the supply voltage to the LED indicator is lowered or the LED display is turned on. For example, by increasing the resistance value that limits the unit current, the value of the current flowing through the LED display can be reduced to 30 to 60%, and dimming lighting can be realized. According to the embodiment of FIG. 6, the life of the LED display can be extended as compared with the embodiment of FIG. 5.

  FIG. 7 shows a third embodiment of dimming lighting of the LED display according to the present invention. The lighting method of the LED display is a combination of the duty method described in FIG. 5 and the current value variable control described in FIG. It is a current waveform figure at the time of adopting. As is clear from the figure, dimming lighting can be performed with any combination, and can be appropriately combined in consideration of the dimming lighting status, the life of the LED, and the like.

  FIG. 8 shows a fourth embodiment of the dimming lighting of the LED display according to the present invention, in which the control for lighting the LED display in a normal state for a short period of time at a predetermined cycle during the dimming lighting is adopted. It is a current waveform diagram.

  FIG. 8 shows an example of control in which the LED display is turned on in a normal state every 10 seconds during a one-minute period during dimming lighting. For example, when the time data or the illuminance data of the landing are input and it is determined that it is below a predetermined time zone (such as nighttime) or a predetermined illuminance, the CPU executes a control to repeat normal lighting and dimming lighting at a predetermined cycle To do.

  In a dark environment, if the LED display continues to be dimmed, the elevator user may not be able to recognize the lighting of the LED display. In such a case, by executing this control method, it is possible to easily recognize the lighting of the LED display and use the elevator.

  According to the above embodiment of the present invention, as in Patent Document 1, it is detected that traffic demand is quiet and dimmed, and has the following effects as compared with the case of merely saving energy. . For example, it may be necessary to reduce the light even if it is not quiet due to the weather, etc. On the other hand, even if the number of users is small, there is a situation where it is desirable to avoid a decline in service, it is desirable to stop the dimming lighting Sometimes. According to the embodiment of the present invention, when such a degree of freedom is desired, energy-saving lighting can be executed in a flexible manner.

  In the above description, a key switch is used as an input device for inputting a dimming lighting execution command. For example, a command from a remote device such as a device (IC, relay, etc.) having a timer function or a monitoring panel can be used. Based on this, an execution command for dimming lighting may be input.

  According to the embodiment of the present invention described above, the LED display is dimmed according to the operation state of the input device, and after the input device is operated, the user is returned to the normal lighting state after a predetermined time has elapsed. It is possible to save energy while suppressing a decline in service.

  DESCRIPTION OF SYMBOLS 1 ... Elevator control apparatus, 2 ... Car terminal, 3, 4 ... Hall terminal, 12, 21, 31, 41 ... CPU, 13, 22, 32, 42 ... Communication circuit part, 14, 24, 34, 44 ... Input circuit , 15 ... Memory, 23, 33, 43 ... LED display drive circuit, 5-8 ... Input device, 9 ... Car LED display, 10, 11 ... Hall LED display, 16, 17 ... Communication line, 201 ... key switch for continuing dimming for 2 hours, 202 ... key switch for continuing dimming for 4 hours, 203 ... key switch for continuing dimming for 6 hours, 204 ... key switch for continuing dimming for 8 hours

Claims (10)

  In an elevator system equipped with an LED display installed in an elevator hall and / or a car to display operation information and / or general information, the light is artificially reduced with respect to the lighting of the LED display. An input device for instructing lighting, and an LED display driving circuit for dimming and lighting the LED display in response to the input of the dimming lighting command from the input device. Elevator system.   2. The elevator system according to claim 1, wherein the LED display driving circuit returns the LED display to normal lighting under a predetermined condition while the LED display is dimmed. 3.   The elevator system according to claim 2, wherein the predetermined condition is that the time when the dimming lighting is scheduled has elapsed.   In an elevator system equipped with an LED display installed in an elevator hall and / or a car to display operation information and / or general information, the light is artificially reduced with respect to the lighting of the LED display. An input device for instructing lighting and its duration, and in response to the input of the dimming lighting command from the input device, the LED indicator is dimmed and the dimming lighting is continued. An elevator system comprising an LED display driving circuit for returning the LED display to normal lighting in response to expiration of time.   5. The dimming lighting stop command input means for manually inputting the dimming lighting stop command according to claim 1, wherein the LED display driving circuit includes the dimming lighting stop command input means. An elevator system characterized by returning the LED indicator to normal lighting in response to a lighting stop command.   6. The LED display driving circuit according to claim 1, wherein the LED display driving circuit causes the LED display to be dimly lit by duty control for changing an ON current time width with respect to an ON / OFF current cycle flowing through the LED display. Elevator system characterized by   6. The elevator system according to claim 1, wherein the LED display drive circuit causes the LED display to be dimly lit by current value control for decreasing a current value flowing through the LED display.   6. The LED display driving circuit according to claim 1, wherein the LED display driving circuit reduces duty value for changing an ON current time width with respect to an ON / OFF current cycle supplied to the LED display and a current value supplied to the LED display. An elevator system characterized in that the LED indicator is dimmed in combination with current value control.   The elevator system according to any one of claims 1 to 8, wherein the LED display drive circuit intermittently lights the LED display in a normal state during the dimming lighting of the LED display. .   In an elevator power saving method comprising an LED display installed in an elevator hall and / or car with an indicator that displays operation information and / or general information in an illuminated manner, artificially dimming the lighting of the LED indicator A command input step for inputting a command relating to lighting and its duration; a dimming lighting step for dimming the LED display in response to the dimming lighting command being input by the command input step; An elevator power saving method, comprising: a normal lighting return step for returning the LED indicator to normal lighting in response to expiration of a duration of dimming lighting.

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