JP2002003107A - Radio communication equipment of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure transmission quality at sending and receiving a control signal or the like by radio in an elevator. SOLUTION: A leak cable 11 is connected with a transmitter-receiver 9 for a controller provided in the elevator controller 8 side and this leak cable 11 is hung down inside a hoistway 1 wherein a car 6 moves up and down. An antenna 12 connected to a transmitter-receiver 10 for a control board provided on the car 6 is mounted on the car 6 so as to be approached to the leak cable 11. Since a radio block can be the shortest distance, disturbance radio waves from the outside are hardly received and transmission of a stable control signal can be realized.

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 controlling the operation of an elevator, and a radio communication device for an elevator for wirelessly transmitting and receiving signals and electric power between a car or a landing.

[0002]

2. Description of the Related Art In an elevator apparatus, an elevator control device usually provided in a machine room and a control panel provided in a car are connected by a tail cord, and a user operates an operation panel in the car. Not only to send a request for registration of the destination floor and to notify that the request has been registered by turning on the lamp, but also to use the intercom for emergency, power supply to various facilities including lighting. Supply is performed through this tail cord. And, as the building where the elevator equipment is installed becomes higher in height, the tail cord becomes longer and heavier, and the more the car is equipped with more equipment and the more detailed control is required, the more the tail cord becomes As the number of core wires increases, the weight further increases, and accordingly, a large hoisting machine is required.

Therefore, the transmission of all signals and power does not depend on tail codes, but the transmission of control signals for some elevator devices uses radio waves such as radio waves or light to reduce the weight of the tail codes. It has been conventionally proposed to reduce the size of the hoist by reducing the weight. For example, supplying electric power from the elevator machine room to the car-side electric equipment by a plurality of trolley lines, and transmitting and receiving an operation status signal between the car and the elevator machine room via a wireless device is one of them. .

[0004]

However, in the conventional apparatus for transmitting and receiving the operation status signal between the above-mentioned car and the elevator machine room via a wireless device, there is a considerable gap in the spatial distance between the wireless devices. Therefore, there is a possibility that undesired radio waves may be interfered in the wireless section. Furthermore, in wireless communication with a moving object such as a car, a change in the distance between transmission and reception may cause a decrease in transmission quality, and measures such as enabling reception over a wide range have been required.

Accordingly, an object of the present invention is to provide an elevator radio communication device capable of performing high-quality and stable communication.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, an invention according to claim 1 is provided between an elevator control device for controlling the operation of an elevator and a control panel provided in a car. In a wireless communication device of an elevator that transmits and receives signals, a transmitter / receiver for a control device provided on the elevator control device side, and is connected to the transmitter / receiver for the control device, and is hung down in a hoistway where a car ascends and descends. Characterized by comprising a leaked cable, an antenna installed in a car so as to approach the leaked cable, and a control panel transceiver connected to the antenna and provided in the car. It is.

Thus, the number of core wires of the tail cord can be reduced, the weight can be reduced, and the load on the hoist can be reduced. In addition, the wireless section can be made as short as possible, and it is difficult to receive undesired external radio waves and other interference waves, thereby realizing stable communication.

According to a second aspect of the present invention, there is provided an elevator radio communication device for wirelessly transmitting and receiving signals between an elevator control device for controlling the operation of an elevator and a landing device provided at the elevator landing. A transmitter / receiver for the control device provided on the elevator control device side, a leaky cable connected to the transmitter / receiver for the control device and suspended in a hoistway on which the car rises and descends, and approaching the leaky cable. And an antenna installed near the elevator hall in the hoistway, and a transceiver for hall equipment connected to the antenna and provided near the elevator hall.

[0009] This eliminates the need to lay the signal transmission cable on the inner wall of the hoistway and the connection work at the landing on each floor, and to eliminate the risk of erroneous connection.

[0010] Further, the invention according to claim 3 is based on claim 1.
Alternatively, in the elevator radio communication device according to claim 2, power is supplied from the elevator control device side to the car side or the elevator landing side via the leaky cable and the antenna. Things.

As a result, power can be transmitted to the moving car or each landing in a non-contact manner, so that the work of laying and connecting the power transmission cable becomes unnecessary, and the possibility of erroneous connection can be eliminated.

The invention described in claim 4 is the first invention.
4. The elevator wireless communication device according to claim 3, wherein the antenna is configured to surround a leakage cable.

[0013] Thus, the leaky cable and the antenna can be kept in a tightly coupled state extremely close to each other, and stable communication can be realized.

The invention described in claim 5 is the first invention.
According to a fourth aspect of the present invention, in the elevator radio communication device, a weight is provided at a lowermost portion of the leaky cable.
The radio communication device for an elevator according to claim 5,
The terminal resistance of the leakage cable is provided on a weight.

[0015] Thereby, the leaky cable can be stretched straight along the vertical direction of the car so as not to swing.
Electromagnetic coupling between the leaky cable and the antenna can be kept uniform, signal transmission quality can be ensured, and the trouble of preparing another container or the like for storing the terminating resistor can be eliminated.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an elevator radio communication apparatus according to the present invention will be described with reference to FIGS.
This will be described in detail with reference to FIG.

FIG. 1 is a configuration diagram of an elevator apparatus shown for explaining a first embodiment of the present invention. In this drawing, for example, a case where an elevator apparatus is installed in a building on the third floor of the first to third floors is shown, and a hoistway 1 is formed in a vertical direction, and the rooftop of the building, that is, the hoistway 1 is usually used. A machine room 2 is provided at the top. Machine room 2
Is provided with a sheave 3 driven by a hoist (not shown), and a rope 4 wound on the sheave 3 hangs down to the hoistway 1 via a deflecting wheel 5, and both ends of the rope 4 And a weight 7 is fixed to the car 6 respectively.
Therefore, when the sheave 3 is driven by the hoist, the car 6 and the counterweight 7 are lifted and lowered in the hoistway 1 in a hoisting manner.

An elevator controller 8 for controlling the operation of the hoisting machine, such as controlling the operation of the car 6, such as stopping or passing the car 6 on each floor, or responding to a car call from the platform on each floor. Are provided in the machine room 2.

The machine room 2 is provided with a control device transceiver 9 for transmitting control signals and the like from the elevator control device 8 side and receiving signals from the control panel on the car 6 side. Is provided with a control panel transceiver 10 for transmitting signals and the like from the control panel side of the car 6 and receiving signals from the elevator control device 8 side.

The control unit transceiver 9 on the elevator controller 8 side and the control panel transceiver 10 on the car 6 side
The transmission and reception of signals between the antenna 1 and the leakage cable 11
2 is performed. That is, a leaky cable 11 connected to a transmission / reception unit TR of the control device transmitter / receiver 9, which will be described later, hangs down from the machine room 2 into the hoistway 1, and its lower end reaches near the bottom (pit) 1 a of the hoistway 1. ing.
Further, an antenna 12 is provided on the ceiling of the car 6 so as to approach the leakage cable 11, and the antenna 12 is connected to a transmitting / receiving section TR of the control panel transceiver 10, which will be described later. In FIG. 1, the leaky cable 11 is shown as being hung down between the car 6 and the entrance of each floor. However, the leaky cable 11 is, of course, not hindered by passengers getting on and off. , Is suspended at a position shifted laterally from the door position.

Next, the configurations of the control unit transceiver 9 and the control panel transceiver 10 will be described.

FIG. 2 is a system diagram showing a schematic configuration of the transmitter / receiver 9 for the control device. That is, the control device transceiver 9
Is an input section IN that receives a control signal from the elevator control device 8 as an input signal, and a modulation section MO that modulates the input signal.
D, a power amplifying unit PA for power-amplifying the modulated signal, a transmitting / receiving unit TR for switching the transmission / reception signal while supplying the power-amplified signal to the leaky cable 11, an amplifier AMP for amplifying a signal received from the leaky cable 11, A demodulation unit DEM that demodulates the demodulated received signal, and an output unit OUT that outputs the demodulated signal to the elevator control device 8.

When simultaneous two-way communication is performed via the transmission / reception unit TR, a so-called full-duplex system in which the transmission frequency and the reception frequency are different can be adopted. In the half-duplex system, transmission and reception can be switched by a control signal using the same frequency.

The control panel transceiver 10 is also constructed in the same manner as described above. In this case, the input unit IN and the output unit OU are used.
T is an input / output interface for signals to and from the control panel of the car 6, and the transmission / reception unit TR is connected to the antenna 12 to switch between transmission and reception signals.

The operation of the thus configured elevator radio communication device according to the present invention will be described with reference to FIGS.

The control signal output from the elevator control device 8 is input to the input section IN of the control device transceiver 9. The input control signal is modulated by the modulation unit MOD to be a high-frequency signal, and further amplified by the power amplification unit PA to power that can be transmitted as radio waves. This power-amplified signal is radiated to the air as radio waves from the leaky cable 11 via the transmission / reception unit TR. At this time, a uniform electric field is formed around the leakage cable 11. This electric field is
The vehicle is guided by an antenna 12 installed above the car 6 and received by the control panel transceiver 10 on the car 6 side. Then, the received signal is amplified by the amplifier AMP via the transmission / reception unit TR. The amplified signal is demodulated by the demodulation unit DEM, becomes an original control signal, and is output to the control panel of the car 6 via the output unit OUT.

The flow of the control signal output from the control panel of the car 6 is the same as that described above, and the control panel of the car 6 → the control panel transceiver 10 → the antenna 12 → (radio wave)
The signal is transmitted through the route of the leakage cable 11, the control device transceiver 9, and the elevator control device 8. Since the leaky cable 11 and the antenna 12 are used for both transmission and reception, transmission / reception signals are switched by the transmission / reception unit TR in the control device transceiver 9 and the control panel transceiver 10.

As described above, the elevator radio communication device according to the present invention controls transmission of control signals between the elevator control device 8 installed in the machine room 2 and the control panel of the car 6.
Leakage cable 11 suspended from machine room 2 into hoistway 1
And the control unit transceiver 9 and the control panel transceiver 10 via the antenna 12 installed in the car 6 so as to approach the leakage cable 11, so that the number of core wires of the tail cord is reduced and the weight is reduced. Can be reduced,
The load on the hoist can be reduced.

Since the antenna 12 transmits and receives signals close to the leaky cable 11, the radio section can be made as short as possible, and it is difficult to receive unwanted external radio waves. Furthermore, since the fluctuation of the wireless section distance due to the raising and lowering of the car 6 is eliminated, even in an elevator device for a skyscraper with a long ascending and descending distance, for example, it is possible to maintain stable communication conditions and realize stable communication. Can be.

The antenna 12 provided in the car 6
Is formed in, for example, a ring shape, and as shown in FIG. 3, the leaky cable 11 and the antenna 12 are engaged with each other so that the leaky cable 11 is surrounded by the ring-shaped portion of the antenna 12. Then, when the car 6 moves up and down, the leaky cable 11 and the antenna 12 can always maintain a substantially constant engagement state, making the communication state more stable and improving the reliability of transmission of control signals and the like. Can be increased.

Further, by adding a weight 13 to the lowermost part of the leaky cable 11, the deflection of the leaky cable 11 can be minimized, and the approach state between the leaky cable 11 and the antenna 12 can be kept constant. it can. Also,
A terminal resistor is required at the lowermost part of the leakage cable 11, but this terminal resistor can be stored in the weight 13.

Next, as another embodiment of the present invention, a description will be given of an elevator radio communication device in which control signals between the elevator control device side and the landing side are transmitted and received wirelessly.

FIG. 4 is a configuration diagram of an elevator apparatus shown for explaining a second embodiment of the present invention.
As in the first embodiment shown in FIGS.
3 shows a case where an elevator device is installed in a building with a third floor. In FIG. 4, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of those parts will be omitted.

The machine room 2 is provided with an elevator control device 8 for driving the hoist, stopping and passing the car 6 on each floor, and responding to a car call from the platform on each floor. Control. The machine room 2 is provided with a control device transceiver 9 for transmitting a control signal and the like from the elevator control device 8 side and receiving a signal from the landing equipment 15 on the landing side of each floor, A leaky cable 11 connected to the transmission / reception unit TR of the control device transceiver 9 is suspended from the machine room 2 into the hoistway 1.

On the other hand, near each floor landing in the hoistway 1, an antenna 14 is installed so as to approach the leakage cable 11. This antenna 14 is used as a landing equipment transceiver 16 of a landing equipment 15 such as a car call button.
It is connected to the. The schematic system of the landing equipment transceiver 16 installed near each floor landing in the hoistway 1 is configured as shown in FIG.

That is, the landing equipment transceiver 16 includes an input unit IN that receives a car call signal from the landing equipment 15 as an input signal, a modulation unit MOD that modulates the input signal, and a power amplification unit that power-amplifies the modulated signal. PA, a power-amplified signal is supplied to the antenna 14, and a transmission / reception unit TR for switching transmission / reception signals, an amplifier AMP for amplifying a reception signal from the antenna 14, a demodulation unit DEM for demodulating the amplified reception signal, a demodulation Landing signal 15
Output unit OUT, a rectifying unit REC that obtains power from a received signal from the antenna 14 and rectifies the same, a charging unit CHG that charges this power and outputs it to the landing equipment 15
It is composed of

The structure of the control device transceiver 9 on the elevator control device 8 side is the same as that shown in FIG.

The operation of the second embodiment of the present invention thus configured will be described below.

For example, a car call signal output from the landing equipment 15 is input from the input unit IN of the transceiver 16 for landing equipment. The input signal is modulated by the modulation unit MOD to become a high-frequency signal, and furthermore, the power amplification unit PA
Is amplified to power that can be transmitted as radio waves. This power-amplified signal is radiated into the air as radio waves from the antenna 14 via the transmission / reception unit TR. This radio wave generates an induction signal in the leaky cable 11 and the control device transceiver 9
Received at.

On the other hand, when the elevator control device 8 confirms the car call signal from the landing equipment 15 and registers it, a registration signal is issued from the elevator control device 8.
Therefore, this signal is transmitted from the control device transceiver 9 and radiated into the air as a radio wave from the leaky cable 11,
A uniform electric field is formed around the leakage cable 11. This electric field is guided and received by an antenna 14 installed near each floor landing in the hoistway 1, and the received signal is transmitted through the transmission / reception unit TR of the landing equipment transceiver 16 to the amplifier AMP.
Is amplified. The amplified signal is output to the demodulation unit D
The signal is demodulated by the EM and becomes the original control signal, and the output unit OU
The signal is output to the landing equipment 15 via T, and for example, the car call button of the landing equipment 15 is turned on.

Further, the high-frequency signal excited by the radio wave received by the antenna 14 passes through the transmitting / receiving section TR and the rectifying section R
Also introduced to EC. The rectification unit REC is provided with a detection circuit. The detected signal is rectified and smoothed, converted to DC, and supplied to the charging unit CHG to be charged. Then, the DC charged in the charging unit CHG is supplied as power supply power to the landing equipment 15 and the landing equipment transceiver 16.

At this time, even if it is not necessary to send a control signal from the elevator control device 8, the pseudo signal is sent out, so that the charging unit CHG in the landing equipment transceiver 16 is always supplied with stable power. Can be supplied. However, in the case of such constant transmission, the transmission mode is full duplex, so that the transmission frequency and the reception frequency need to be set to different values. Further, when the transmission frequency and the reception frequency are set to be the same, the transmission form needs to be half duplex.

Since the tightly coupled state between the leaky cable 11 and the antenna 14 is maintained, the electric field strength of the radio wave radiated from the leaky cable 11 is at a level that is not restricted by the Radio Law. . Also, as shown in FIG. 3, the antenna 14 is formed in a ring shape, for example, and the leakage cable 11 and the antenna 14 are engaged so that the periphery of the leakage cable 11 is surrounded by the ring-shaped portion of the antenna 14. Then, the leakage cable 11 and the antenna 14 can be more closely engaged. Further, a weight 3 may be added to the lowermost part of the leak cable 11.

As described above, according to the second embodiment of the present invention, the elevator control device 8 and the landing equipment 1 on each floor are provided.
The transmission and reception of the control signal between the floor 5 and the supply of electric power to the landing equipment 15 on each floor are performed by using the leakage cable 11 and the antenna 14 installed near the landing on each floor so as to approach the leakage cable 11. Via the control device transceiver 9
And the landing device transceiver 16. Therefore, the work of crawling the power transmission cable on the inner wall of the hoistway 1 and the connection work at the landing on each floor, which are conventionally required, are unnecessary, and the risk of erroneous connection can be eliminated. In addition, even when an additional device is installed, wiring work and the like are not required, and power can be supplied in a non-contact manner by merely installing an antenna, and power can be supplied and a control signal can be transmitted and received.

The present invention is not limited to the above-described embodiment. For example, the control panel transceiver 10 on the car 6 side may be replaced with the landing equipment transceiver 16 shown in FIG. As a configuration, the power supply of the control panel transceiver 10 may be received in a non-contact manner. Further, for example, both a control panel transceiver 10 and a landing equipment transceiver 16 are provided in the control panel of the car 6 and the landing equipment 15 on each floor, respectively. It goes without saying that control signals can be exchanged between the two. However, in this case, only one of the antenna 12 and the antenna 14 can be engaged so as to surround the leakage cable 11 with a ring-shaped portion.

Further, the present invention can be applied to an elevator apparatus for a skyscraper. In addition, the case where the elevator control device 8 is installed in the machine room 2 at the top of the hoistway 1 has been described. However, recently, the elevator control device is installed in the three-way frame of the elevator landing, and the machine room is not provided. Such a so-called machine room-less elevator device has been put to practical use, and it goes without saying that the present invention is also applied to such a machine room-less elevator device. Also in this case, the leaky cable connected to the control device transceiver on the elevator control device side is hung from the top to the bottom of the hoistway 1.

[0047]

As described in detail above, according to the present invention, the following various effects can be obtained.

That is, according to the first aspect of the present invention, the number of core wires of the tail cord can be reduced, the weight can be reduced, and the load on the hoist can be reduced. In addition, the wireless section can be made as short as possible, and external interference such as undesired radio waves is less likely to occur, and stable communication can be realized.

According to the second aspect of the present invention, it is not necessary to lay the power transmission cable on the inner wall of the hoistway or to connect the power transmission cables at the floors of the floors. be able to.

According to the third aspect of the present invention, power transmission to and from multiple points can be realized in a non-contact manner, so that the work of laying and connecting the power transmission cable becomes unnecessary, and there is a risk of erroneous connection. Can also be eliminated.

According to the fourth aspect of the present invention, the leaky cable and the antenna can be kept very close and dense, and stable communication can be realized.

According to the fifth aspect of the present invention, the leaky cable can be stretched straight along the vertical direction of the car and prevented from swinging, so that the electromagnetic coupling between the leaky cable and the antenna can be prevented. Can be kept uniform,
The transmission quality of the control signal is ensured.

Further, according to the invention described in claim 6,
The trouble of preparing another container or the like for storing the terminating resistor can be eliminated.

[Brief description of the drawings]

FIG. 1 is a first diagram of an elevator radio communication device according to the present invention.
FIG. 1 is a configuration diagram of an elevator apparatus shown for describing an embodiment of the present invention.

FIG. 2 is a system diagram showing a schematic configuration of an embodiment of a transceiver used in the present invention.

FIG. 3 is an explanatory diagram showing an engagement state between a leaky cable and an antenna.

FIG. 4 is a configuration diagram of an elevator apparatus shown for explaining a second embodiment of the present invention.

FIG. 5 is a system diagram showing a schematic configuration of another embodiment of the transceiver used in the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hoistway 2 machine room 3 sheave 4 rope 6 car 8 elevator control device 9 transceiver for control device 10 transceiver for control panel 11 leaky cable 12 antenna 13 weight

Claims (6)

[Claims] 1. An elevator radio communication device for transmitting and receiving signals between an elevator control device for controlling the operation of an elevator and a control panel provided for a car, comprising: a control provided on the elevator control device side. A device transmitter / receiver, a leaky cable connected to the control device transmitter / receiver and suspended in a hoistway where the car goes up and down, and an antenna installed in the car so as to approach the leaky cable. A radio communication device for an elevator, comprising: a control panel transmitter / receiver connected to the antenna and provided in the car. 2. An elevator wireless communication device for transmitting and receiving signals between an elevator control device for controlling operation of an elevator and a landing device provided at an elevator landing, wherein a control provided on the elevator control device side. A transmitter / receiver for the device; a leaky cable connected to the transmitter / receiver for the control device, which is suspended in a hoistway on which the car rises and descends; and the elevator platform in the hoistway so as to approach the leaky cable. A radio communication device for an elevator, comprising: an antenna installed in the elevator; and a transceiver for hall equipment connected to the antenna and provided near the elevator hall. 3. The electric vehicle according to claim 1, wherein electric power is supplied from the elevator control device side to the car side or the elevator hall side via the leakage cable and the antenna. The elevator wireless communication device according to claim 2. 4. The elevator radio communication device according to claim 1, wherein the antenna is configured to surround the leakage cable. 5. The wireless communication device for an elevator according to claim 1, wherein a weight is provided at a lowermost portion of the leaky cable. 6. The elevator radio communication device according to claim 5, wherein a terminating resistor of the leakage cable is provided on the weight.