JPS6356158B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator display device that uses an optical fiber for information transmission between an elevator hall display device and a control panel in a machine room.

Conventionally, when transmitting information between elevator hall equipment and the control panel in the machine room using optical fiber, electronic circuits for information processing on the hall equipment side, a power supply to drive the equipment, and wiring or signal lines for this are required. becomes. This requires wiring for power supplies in addition to optical fibers, which makes the installation complicated, and also has the disadvantage that connections of power supply lines, signal lines, etc. to hall equipment located far from the machine room are often made incorrectly. It was hot.

This invention was made in order to eliminate the above-mentioned conventional drawbacks, and by converting light transmitted through optical fibers into electrical energy and using this electrical energy as a power source for hall equipment, To provide a display device for an elevator that eliminates electrical wiring between the lines and eliminates the complexity of wiring, connection errors, etc.

Embodiments of the elevator display device of the present invention will be described below. Figure 1 shows a schematic diagram of the invention in which the display section of the elevator hall on each floor and the control panel of the machine room are connected by optical fibers, and 1 is a hoisting machine installed in the machine room 2 (not shown). A rope 3 is wound around the sheave 1, and a cage 4 is connected to one hanging end of the sheave 1, and a counterweight 5 is connected to the other hanging end. ing. 6a to 6d are screens installed in the elevator halls from the 1st floor to the 4th floor to display comments for passengers waiting in the hall;
Hall call buttons 7a to 7c for up are provided below the screens 6a to 6c on the 2nd to 3rd floors, and hall call buttons 8b for down are provided below the screens 6b to 6d on the 2nd to 4th floors. ~8d are provided respectively. In addition, the screen 6a
~6d and hall call buttons 7a~7c, 8b~8d
Each of the hall display devices and the control panel 9 installed in the machine room 2 are connected by an optical fiber 10, and signals are exchanged by optical transmission.

FIG. 2 is a block diagram showing the configuration of the optical transmission system and display device according to the present invention, and shows, as an example, the relationship between the hall display device on the second floor and the control panel 9.

In this FIG. 2, 11 is a light source such as a laser;
Reference numeral 12 denotes a light modulator that modulates the light beam from the light source 11 according to display information, and the light beam modulated by the light modulator 12 is transmitted through the optical fiber 10 to the light deflector 13 provided on the hall side. It is becoming more and more like this. The optical deflector 13 has a function of scanning and deflecting the transmitted optical beam with respect to the screen 6b, and an optical distributor 14 such as a half mirror is installed in the direction in which the optical beam is radiated from the optical deflector 13. The light beam reflected by the distributor 14 is irradiated onto the screen 6b, and a light/power converter is provided on the light beam transmission side of the optical distributor 14 to convert the transmitted light beam into electrical energy. 15 is provided, and this optical/power converter 15 functions as a driving power source for lighting the up call button 7b and down call button 8b and their control circuits, and as a driving power source for the optical deflector 13. 16
is an interface section of the hall call button, and when the call buttons 7b and 8b are pressed, a call signal and its response signal are exchanged between the control panel 9 through an optical fiber (not shown).

Next, the operation of the elevator display device of the present invention configured as described above will be explained.

When a light beam from a light source 11 is applied to a light modulator 12, the light beam is modulated by a display information signal. This modulated light beam is transmitted through the optical fiber 10 to the optical deflector 13, where the optical deflector 13 converts it into a light beam that scans the screen 6b and emits it toward the optical distributor 14. This optical distributor 14
A part of the light beam transmitted through the light-to-power converter 15
It receives this power, converts it into electric power, and supplies it to the optical deflector 13 and the call button interface unit 16, which lights the call buttons 7b and 8b and drives their control circuits, and further drives the optical deflector 13 and the like.

On the other hand, the light beam reflected from the light distributor 14 is irradiated toward the screen 6b, and by scanning the screen 6b with the light beam, the screen 6b is
At the top, comments such as the elevator operating status are displayed to the passengers waiting in the hall. In addition, the call button 7b at the landing,
Transmission of call information and response information by pressing 8b is performed between the control panel 9 of the machine room 2 and the control panel 9 of the machine room 2 through the interface section 16 and an optical fiber (not shown), and call buttons 7b and 8b are pressed in accordance with the response information. is turned on by the power from the light/power converter 15.

As described above, according to the elevator display device of the present invention, a part of the display light beam transmitted from the control panel in the machine room to the hall equipment through the optical fiber is converted into electric power, and the converted electric power is provided as a driving power source for the hall equipment. This eliminates the need for power and signal wiring between the machine room and the hall equipment as in the past.
This has the advantage of not only eliminating the complexity of wiring and connection errors, but also simplifying the installation work of the display device.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram when the elevator display device of the present invention is used for information transmission between a hall and a machine room, and Figure 2 is a block diagram showing the configuration of the optical transmission system and display device of the elevator display device. It is. 2... Machine room, 6a-6d... Screen, 7
a~7c, 8a~8d...hall call button, 9...
Control panel, 10... Optical fiber, 11... Light source, 1
2... Optical modulator, 13... Optical deflector, 14... Optical distributor, 15... Optical/power converter. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] 1. In an elevator display device that uses optical fiber to transmit information between elevator hall equipment and a control panel in a machine room, a light source provided on the machine room side, and a light modulation device that modulates the light beam from this light source according to display information. an optical fiber that transmits the light beam from this optical modulator to the hall, an optical deflector provided on the hall side that deflects and scans the display information light beam sent by the optical fiber, and an optical fiber that faces this optical deflector. an optical splitter installed at An elevator display device comprising a screen that is scanned by a beam and displays information.