JP2001122543A - Elevator control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator control device dispensing with a dedicated moving cable to be connected to a car of an elevator and rationalizing a control line of a landing. SOLUTION: A power feeder line 14 feeding a power and a control signal from an elevator control panel 2 by a power line transmission system is provided in a hoistway 5. Power receiver parts 12a, 12b are provided in the elevator car 8 and adjacency to a landing of each floor and the respective power receiver parts 12a, 12b are electromagnetically connected to the power feeder line 14. The respective power receiver parts 12a, 12b are received power in non-contact across the power feeder line 14 by electromagnetic induction and feed power and transmit control signals necessary for a car control unit 15 and an elevator hall control unit 9 via signal converter circuits 3a, 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device for supplying power and transmitting control signals to a control unit provided on an elevator car and an elevator hall control unit provided on a floor.

[0002]

2. Description of the Related Art In a conventional elevator, as shown in FIG. 6, a basket 68 provided in a hoistway 65 is connected to a hanging weight 67 via a rope wound around a hoist 66. By driving the hoist 66, the length of the hanging with the hanging weight 67 is changed to move up and down. A control panel 62 for controlling the operation of the car 68 is installed in a door pocket of a landing frame on a specific floor or in a hoistway 65 or in a machine room if there is a machine room. The transmission of the control signal and the necessary power supply were performed between the internal control unit 71 and the car 68 via a car control line 64 composed of a dedicated moving cable suspended from the car 68. In addition, the elevator control panel 62 and each floor landing 7
0, an elevator hall control unit 69 having an elevator car calling means, etc.
A control signal is transmitted and necessary power is supplied through a hall-side control line 63 including a dedicated cable provided in the inside.

[0003]

By the way, the control signal transmission and the power supply between the elevator control panel 62 and the elevator car 68 are conventionally connected via a dedicated moving cable 64a suspended from the car 68, so that the elevator floor is used. As the number increases, the length of the dedicated moving cable 64a also increases, causing a problem that the weight of the car increases and the power consumption increases.

Further, control signal transmission and power supply between an elevator hall control unit installed at each landing 70 and an elevator control panel 62 installed at a specific floor landing are as follows:
It was necessary to provide the hall control line 63 in the hoistway separately from the moving cable connected to the car, and it was necessary to increase the length in proportion to the increase in the number of elevator floors.

[0005] The present invention has been made in view of such a conventional point, and eliminates the need for a dedicated moving cable connected to the elevator car, thereby reducing power consumption due to a reduction in the weight of the car. An object of the present invention is to provide an elevator control device capable of rationalizing a control line by sharing an elevator control line in a hoistway including an elevator hall side control line.

[0006]

To achieve the above object, an elevator control apparatus according to the present invention is connected to an elevator control panel for controlling an elevator, and is provided at a predetermined position in a hoistway. A power supply line provided in the car, a power receiving unit provided at a predetermined location of the car and connected to the control unit in the car, and a power receiving unit connected to the elevator hall control unit of each floor, from the power supply line Through the respective power receiving units, by electromagnetic induction, supply of necessary power and transmission of control signals to a control unit in the car provided in the car and an elevator hall control unit provided in each floor in a non-contact manner. It is characterized by the following.

According to a second aspect of the present invention, in the elevator control apparatus according to the first aspect, the power receiving section of the car has first and second power receiving sections, and the first power receiving section is a car. A power supply terminal connected to a power supply line at each stop position of the elevator in the hoistway, wherein the second power receiving unit is connected to the control unit in the car via a battery; The power required for the car is supplied to the battery in the car via the power supply terminal and the second power receiving unit at each floor stop position.

[0008] With such a configuration, power supply and transmission of control signals can be simultaneously carried out only through the power supply line without contact.

According to a third aspect of the present invention, in the elevator control device according to the first or second aspect, the power supply line is provided on a guide rail in the hoistway. I do.

By providing the power supply line on the elevator guide rail in this way, the control line can be unified and rationalized.

According to a fourth aspect of the present invention, in the elevator control apparatus according to any one of the first to third aspects, the control signal is transmitted via a power supply line and a power receiving unit. The transmission is performed by a transmission method.

As described above, by transmitting the control signal by the power line transmission method, the number of wirings can be reduced.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of an elevator control device according to a first embodiment of the present invention.

In FIG. 1, the arrangement of the hoisting machine 6, the hanging weight 7, the car 8 and the elevator control panel 2 in the hoistway 5 is the same as the conventional one. In this embodiment, the elevator control panel 2 for controlling the operation of the elevator and the car control unit 15 of the elevator car 8 and the elevator hall control unit 9 are connected by a power line transmission method. That is, the elevator control panel 2 includes a signal conversion circuit 3c for converting to the power line transmission system, and the power line 4 on the output side of the signal conversion circuit 3c is connected to the elevator guide rail 16
It is connected to the power supply line 14 provided above. Power supply line 1
4, a power receiving unit 12a provided at a predetermined location of the elevator car 8 and connected to the control unit 15 in the car via a signal conversion circuit 3a of a power line transmission system, and provided in the hoistway 5; A power receiving unit 12b connected to an elevator hall control unit 9 installed in an elevator hall 10 via a signal conversion circuit 3b of a power line transmission system is electromagnetically coupled. By the electromagnetic induction of the electromagnetic coupling unit, power is supplied and control signals are transmitted and received between the elevator control panel 2 and the in-car control unit 15 and the elevator hall control unit 9.

FIG. 2 is a diagram for explaining a method for supplying necessary power to a car interior control unit or an elevator hall control unit from a power supply line in a non-contact manner via a power receiving unit 12a or 12b. In the figure, the power receiving unit 12 a or 12 b has a power receiving core 21, a coil 22 wound around the power receiving core 21, a cage power line 23 connected to the coil 22, and is electromagnetically coupled to the power supply line 14.

An AC current is supplied to the looped power supply line 14, and a magnetic flux generated by the current flowing through the power supply line 14 is applied to the protrusion of the T-type power receiving core 21 by a coil 22.
Is picked up by a transformer configured by winding, and the obtained power and control signal are supplied to the control unit in the car via the car power line 23.

FIG. 3 is a perspective view showing the configuration of a power receiving section 12a provided on the elevator car and a power supply line 14 provided on a guide rail 16 provided in the hoistway. In the figure, 21 is a power receiving core of the power receiving unit 12a, 22 is a coil, 23 is a cage power line, 14 is a power supply line, and 16 is a guide rail.

As shown in FIG. 3, a power supply line 14 is provided inside a U-shaped guide rail 16, and a projection of a power receiving core 21 of a power receiving portion 12a provided on a car side is a guide rail. The power and control signals are supplied to the car side in a non-contact manner while the car is stopped or moving by receiving power by moving up and down inside the U-shape of 16.

Next, the configuration of a signal conversion circuit 3c for converting an elevator control signal into a power line transmission system will be described with reference to FIG. In the figure, 51 is a transformer, 52
Is a power supply circuit, 53 is a frequency conversion circuit, 54 is a microprocessor, 55 is an elevator control line, 56 is a power supply line, and 57 is an elevator control signal.

In order to superimpose the elevator control signal 57 of the elevator control line 55 on the power supply line 56 connected to the power supply circuit 52 in the elevator control panel, the elevator control signal 57 is converted by the microprocessor 54 and the frequency conversion circuit 53. The frequency band to be converted is from 10 kHz to 450 kHz, which is defined as “Usable frequency range of power line communication equipment” in Article 44 of the Enforcement Regulations of the Radio Law.
A frequency band of Hz is used. The converted control signal is superimposed on the power supply line 56 via the transformer 51 and transmitted. The control signal received at the landing or the car side is demodulated by the frequency conversion circuits 3a and 3b connected to the frequency conversion circuit 53 from the transformer 51 in the opposite manner as described above.

In the apparatus configured as described above, power supply and control signal transmission required for the elevator car 8 can be supplied in a non-contact manner from the power supply line 14 provided on the elevator guide rail 16, so that the conventional elevator Control panel 2
There is no need for a dedicated moving cable for connecting between the car and the elevator car 8, and there is no contact failure due to wear due to non-contact.

Further, since the cable becomes unnecessary, the weight of the car can be reduced and the power consumption of the elevator can be reduced.

Further, since the elevator control signal is converted into the power line transmission method and transmitted, the control signal can be transmitted only through the power supply line 14, and the number of control lines can be greatly reduced.

Further, the connection between the elevator hall control unit 9 installed in the elevator hall and the elevator control panel 2 is also provided on the elevator guide rail 16 by the power receiving section 12b.
Is provided, necessary power supply and transmission / reception of control signals become possible.

Therefore, by utilizing this, the addition and reduction of the elevator hall control unit 9 becomes easy,
Reduction in the number of wirings can be realized at the same time. Also, the reduction in the number of wirings is expected to improve reliability and maintainability.

In the above embodiment, the case where the power supply line is provided on the guide rail 16 has been described. However, the power supply line may be provided at a predetermined position in the space in the hoistway other than on the guide rail 16. .

FIG. 5 is a diagram for explaining a second embodiment of the present invention, in which power supply to the car 8 and control signal supply are separated. The cage 8 includes a power receiving unit 12
a, a circuit for transmitting and receiving a control signal including a signal conversion circuit 3c, and a power supply circuit including a power receiving unit 12c and a battery 17 are provided.
5 is connected. A power supply terminal 18 is provided on the guide rail 16 at each stop position of the elevator car in the hoistway.

In such a configuration, the power receiving section 12c receives power from the power supply terminal 18 and supplies and charges the battery 17 provided in the car 8 only when the car 8 stops at the stop position on each floor. While the car 8 is running, power is supplied from the battery 17 to the control unit 15 in the car. Even with such a configuration, the same effect as in the first embodiment can be obtained.

[0030]

As described above, according to the present invention, a dedicated moving cable connected to the elevator car is not required, the power consumption of the elevator is reduced by reducing the weight of the car, and the power supply and control are performed in a non-contact manner. Since the signal can be transmitted, the transmission of the control signal is performed by the power line transmission method, which has an effect of reducing the number of wirings.

Further, when the power supply line is provided on the elevator guide rail, there is an effect of unifying and rationalizing the power supply path.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a non-contact power supply method using a power receiving unit according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a configuration of a guide rail having a power receiving unit and a power supply line according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a signal conversion circuit according to the first embodiment of the present invention.

FIG. 5 is a schematic configuration diagram showing a second embodiment of the present invention.

FIG. 6 is a block diagram showing connections between control devices in a conventional elevator.

[Explanation of symbols]

 2 ... Elevator control panel 3a, 3b, 3c ... Signal conversion circuit 4 ... Power line 5 ... Hoistway 6 ... Hoisting machine 8 ... Cage 9 ... Elevator hall control unit 10 ... Elevator landing 12a, 12b, 12c ... Power receiving unit 14 ... Power Supply line 15 ... Control unit in car 16 ... Guide rail 17 ... Battery 18 ... Power supply terminal 21 ... Power receiving core 22 ... Coil 23 ... Cage power line 51 ... Transformer 52 ... Power supply circuit 53 ... Frequency conversion circuit 54 ... Microprocessor 55 ... Elevator control Line 56: Power supply line 57: Elevator control signal

Continued on the front page (72) Inventor Sadahiro Matsuda 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in Fuchu Plant, Toshiba Corporation (reference) 3F002 GA03 GA05 3F303 BA04 FA07 FA09

Claims (4)

[Claims] 1. A power supply line connected to an elevator control panel for controlling an elevator and provided at a predetermined location in a hoistway, and a power receiving unit provided at a predetermined location in a car and connected to a control unit in the car. A power receiving unit provided near each floor landing and connected to an elevator hall control unit of each floor, via the power receiving line from the power supply line,
An elevator, wherein by electromagnetic induction, necessary electric power is supplied and control signals are transmitted to a control unit in the car provided in the car and an elevator hall control unit provided in each floor in a non-contact manner. Control device. 2. The power receiving section of the car has first and second power receiving sections, and the first power receiving section is connected to a control unit in the car.
The second power receiving unit is connected to the control unit in the car via a battery, and a power terminal connected to the power supply line is provided at each stop position of the elevator in the hoistway, and the power required for the control unit in the car is provided. The elevator control device according to claim 1, wherein at each floor stop position, the power is supplied to the battery in the car via the power terminal and the second power receiving unit. 3. The elevator control device according to claim 1, wherein the power supply line is provided on a guide rail in a hoistway. 4. The method according to claim 1, wherein the transmission of the control signal is performed by a power line transmission method via the power supply line and a power receiving unit. Elevator control device.