JP3028896B2 - Elevator signal transmission equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to signal transmission between a machine room of an elevator and a control panel of a car and a hall. The present invention relates to a suitable signal transmission device.

[0002]

2. Description of the Related Art Generally, in an elevator, a car
In order to transmit signals between the (cab) and the machine room, and to supply power from the machine room to the car, connect the car and the machine room with a moving cable (hereinafter referred to as a tail cord). , Signal transmission and power supply.

[0003] By the way, as the tail cord, generally, for example, a 60-core cable is used, and moreover, for example, three cables are required, so that these can be hung under the car. However, in this case, when a roll occurs in a building (building) or the like in which the elevator is installed, the tail cord also rolls, which may cause a bottleneck in elevator traveling.

In recent years, with the skyscraper of buildings,
Elevators with a stroke exceeding 00 m are not uncommon, but in such a case, the neck in the elevator traveling due to the tail cord is a serious problem.

[0005] In recent years, outdoor elevators have also been used. In this case, in consideration of swinging due to wind, etc., there is a case where the tail cord cannot be hung below the car and used. is there. Further, in a skew elevator, when the long stroke and the speed are increased, the space for storing the tail cord and the guide mechanism become complicated, and the use of the tail cord is limited.

Accordingly, for example, Japanese Patent Application Laid-Open No. 61-19738 discloses
Japanese Patent Application Laid-Open No. 63-30084 discloses an apparatus for transmitting signals by connecting an elevator machine room and a car with an optical space transmission system as an alternative to the tail cord. Discloses a transmission device in which an antenna is provided in each of a machine room and a car of an elevator, and signals are transmitted and received between both antennas via radio waves.

Further, Japanese Patent Application Laid-Open No. 2-66086 proposes a transmission device in which a leaky coaxial cable is arranged along a hoistway to transmit and receive signals by radio wave coupling. On the other hand, Japanese Patent Laying-Open No. 60-102377 proposes a system in which a trolley cable is used for power supply between a car and a machine room.

[0008]

In the above prior art, no special consideration is given to the case where a plurality of elevators are installed side by side and the signal transmission between the machine room and the hall (hall control panel). Had the following problems.

That is, in the conventional elevator signal transmission device, since the car, the machine room, and the machine room and the hall are transmitted using different cables, the number of cables increases, and in an elevator having a long stroke, The cable length became long, and there were problems of noise and voltage drop.

Further, in the prior art using the optical space transmission system, there are problems in that it is difficult to align the optical axis in a long-distance space, and there is a problem of transmission failure due to smoke, dust and the like. In addition, in the case of aerial radio waves, the transmission level is limited at the output level of weak radio specified by the Radio Law, and there is a danger that radio waves will weaken and cause radio interference on long journeys, while the radio wave output level has been increased Therefore, there were problems such as the necessity of a license under the Radio Law and the effect on other devices.

On the other hand, in the prior art, in the case of a plurality of elevators installed in parallel, one for each elevator is one.
Since a transmission device of a system is required, each man-hour is required, and there is a problem of cost increase.

An object of the present invention is to maintain a short spatial transmission distance even when the travel range of an elevator is long, to obtain a highly reliable transmission, to reduce the number of work steps and to reduce the cost. An object of the present invention is to provide an elevator signal transmission device without a tail code, which can achieve the following.

[0013]

SUMMARY OF THE INVENTION The object of the present invention is to transmit signals between an elevator car and a machine room via a transmission cable capable of non-contact transmission arranged inside an elevator tower. This is achieved by sharing the transmission cable between adjacent elevator towers.

[0014] It is another object of the present invention to transmit signals between an elevator car and a machine room via a non-contact transmission cable disposed in an elevator tower, and to connect the transmission cable to the machine room. This is achieved by sharing the signal transmission between the control panel and the hall control panel.

At this time, as a transmission cable that can be tightly coupled by weak radio, a tightly-coupled cable in which two insulated conductors are paired or a leaky coaxial cable is laid in the elevator tower room, On the other hand, a coupler that is tightly coupled is installed in a car or a hall so that transmission is performed via a common transmission cable.

The transmission signals may be distinguished by, for example, frequency.

[0017]

Since the transmission cable can be used in common, the required cable length can be reduced. In addition, by using a transmission cable capable of non-contact transmission, non-contact transmission can be obtained, which may cause wear. And is not affected by abrasion powder. Also, no license is required for weak radio.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an elevator signal transmission device according to the present invention will be described in detail with reference to the illustrated embodiments. FIG.
Is an embodiment in which the present invention is applied to a system including two elevators of the A-unit and the B-unit.
1 is a transmission cable, 2a and 2b are combiners, 3 is a duplexer,
4a is the machine room control panel of the A elevator, 4b is the machine room control panel of the B elevator, 5a is the car control panel of the A elevator, 5b is the car control panel of the B elevator, and 6 is the terminator. .

The transmission cable 1 is a transmission cable capable of non-contact transmission by weak radio waves, such as a tightly coupled cable in which two insulated conductors are paired, or a leaky coaxial cable, for example. The car is installed in a straight line along the traveling direction of the car, for example, in the vertical direction, at the boundary portion where the tower of the elevator of the No. B elevator is adjacent.

Each of the couplers 2a and 2b is composed of a kind of antenna which functions to transmit and receive a signal by a weak radio wave to and from the transmission cable 1. These couplers 2a, 2b are mounted outside the respective cars of the A-car elevator and the B-car elevator, at positions close to both sides of the transmission cable 1, respectively. 2b is a transmission cable 1 not only when each car is stopped but also when it is running.
Are always positioned at a constant interval on one side.

Reference numeral 3 denotes a duplexer. An end of the transmission cable 1 on the machine room side of each of the elevators, ie, an upper end in this embodiment.
Each of them functions as a mixer and a distributor commonly connected to the machine room control panel 4a of the A-unit elevator and the machine room control panel 4b of the B-unit elevator.

The terminator 6 is a matching impedance element connected to the open end of the transmission cable 1.
It functions to prevent signal reflection and obtain good transmission characteristics.

Here, the machine room control panel 4a of the elevator A, the machine room control panel 4b of the elevator B, the car control panel 5a of the elevator A, and the car control panel 5b of the elevator B are all basic. Specifically, as is well known, in this embodiment, each includes a signal transmission device using a carrier (carrier) of a predetermined frequency, and is provided via the transmission cable 1 and each of the couplers 2a and 2b. As a result, the machine room control panel 4a and the A
Signals can be mutually transmitted between the car control panel 5a of the car elevator and between the machine room control board 4b of the car elevator B and the car control board 5b of the car elevator.

First, in the A-unit elevator, a transmission signal sent from the A-unit machine room control panel 4a to the A-unit car control panel 5a is once input to the duplexer 3. Also, B
A transmission signal sent from the machine machine room control panel 4b to the car B car control panel 5b is also input to the duplexer 3 once. Therefore, the transmission cable 1 is supplied with both transmission signals. At this time, the signal transmitted from the A-unit machine room control panel 4a has a carrier having a frequency of A ₁ Hz, and the signal transmitted from the B-unit machine room control panel 4b has a carrier having a frequency of B ₁ Hz.

The signal sent to the transmission cable 1 forms a leaked electromagnetic wave electric field which spreads in the vicinity of the periphery. This electromagnetic wave electric field is then tightly coupled to the respective couplers 2a, 2b, whereby the signal is received and the car control panel 5
a, 5b.

At this time, the car control panel 5a of the car No. A
Only the signal of the frequency of A ₁ Hz transmitted from the machine room control panel 4a is selected and received, while the car control panel 5b of the car B transmits B ₁ H transmitted from the machine room control panel 4b.
Only the signal of frequency z is selectively received.

Next, a signal transmitted from the car A car control panel 5a and to be transmitted to the machine A machine room control board 4a is first supplied to the coupler 2a, and a weak electromagnetic wave electric field is generated around the coupler 2a. Form. On the other hand, the car control panel 5b of Unit B
And transmitted to the No. B machine room control panel 4b are supplied to the coupler 2b, which forms a similarly weak electromagnetic field around the coupler 2b. At this time,
The carrier frequency of the signal transmitted from the car A car control panel 5a is A ₂ Hz, and the carrier frequency of the signal transmitted from the car B car control panel 5b is B ₂ Hz.

Therefore, the electromagnetic wave electric fields generated by these couplers 2a and 2b are tightly coupled to the transmission cable 1, whereby a signal is induced in the transmission cable 1, and the signal is induced in the transmission cable 1, and the control panel of the A-unit machine room is controlled via the duplexer 3. 4a and Unit B machine room control panel 4
b.

However, in the machine room A control panel 4a,
The signal of A ₂ Hz frequency transmitted from the car A car control panel 5a is selectively received, while the frequency transmitted from the car B car control panel 5b is B ₂ Hz in the machine room B control panel 4b. Are selectively received.

Therefore, according to this embodiment, signal transmission between the elevator machine room and the car can be performed without using any tail cord, and only one transmission cable 1 is used. In the elevator of Unit A, the machine room control panel 4a of Unit A and the car control panel 5a of Unit A, and in the elevator of Unit B, the machine room control panel 4b of Unit B and car control panel 5b of Unit B are mutually independent. And transmit and receive information to and from each other.

FIG. 2 shows another embodiment of the present invention.
In this embodiment, the transmission cable 1 is installed in the same elevator tower.
And an insulated trolley cable 9 for transmitting mutual signals between the machine room control panel 4 and the car control panel 5 by the transmission cable 1 as in the embodiment of FIG.
, Which supplies electric power from the machine room control panel 4 to the car control panel 5, the hall control panels 8-1,..., 8-m,. Mutual signal transmission between the four control units 4 is also performed via the transmission cable 1, and also from the machine room control panel 4 to each of the hall control panels 8-1,..., 8-m,. The power is also supplied via the insulated trolley cable 9.

Here, the insulating trolley cable 9 has an insulating coating on the other surface except for the sliding surface, so that the exposed portion of the charged portion is minimized and the safety is sufficiently maintained. It is intended to be.

In the embodiment of FIG. 2, 7-1,.
7-m,..., 7-n are couplers which, like the coupler 2 for the car, transmit and receive signals by means of weak radio waves to and from the transmission cable 1, and a hall control panel on each floor. 8-
1,..., 8-m,..., 8-n
Is fixedly arranged at a sufficiently close position so that a weak radio wave can be obtained between the two.

Reference numeral 10 denotes a current collector, which is mounted on the outside of the elevator car so as to be in contact with the sliding surface of the insulated trolley cable 9 so that sufficient contact is always obtained even when the car moves. It is. 11-1, ..., 11-
m, ..., 11-n are clamps (feed-in clamps)
Thus, it directly contacts and electrically couples to the surface of the insulated trolley cable 9 excluding the sliding surface to function as a terminal for extracting electric power.

In this embodiment, the transmission signals transmitted from the machine room control panel 4 to the car control panel 5 and the hall control panels 8-1,..., 8-m,. Any transmission signal sent to -n is supplied to the transmission cable 1. At this time, the carrier frequency of the signal transmitted from the machine room control panel 4 is A ₁ Hz.

The transmission signal supplied to the transmission cable 1 is
Since a weak electromagnetic wave electric field is formed in the vicinity of the surroundings, the weak electromagnetic wave electric field is guided and received by the coupler 2 provided in the car and supplied to the car control panel 5. On the other hand, near the transmission cable 1, there are also couplers 7-1,..., 7-m,.
Are arranged, the signal of the carrier frequency A ₁ Hz transmitted from the machine room control panel 4 is connected to these couplers 7-
, 7-m,..., 7-n are also supplied to the respective hall control boards 8-1,..., 8-m,.

Therefore, in this embodiment, the car control panel 5 and each of the hall control panels 8-1,..., 8-m,.
Each receives the same signal, and the information to be received in the car, the hole 1, the hole m, and the hole n is distinguished by polling transmission by address designation.

On the other hand, a transmission signal transmitted from the car control panel 5 to the machine room control panel 4 is received by the transmission cable 1 via the coupler 2, and similarly, each of the hall control panels 8-1,. 8
,..., 8-n are transmitted to the machine room control panel 4 by the respective couplers 7-1,..., 7-m,.
Via the transmission cable 1. At this time,
Car control panel 5 and hall control panels 8-1,..., 8-m,.
..., the carrier frequency of the signal transmitted from 8-n is A ₂ H
z.

In this manner, the signal received by the transmission cable 1 is input to the machine room control panel 4, and also at this time, the signal is transmitted from the car or from each of the holes by polling transmission by address designation. It is configured as follows.

Next, in this embodiment, the electric power to be supplied to the car and the hall on each floor is converted into one insulated trolley cable 9.
It is configured to be supplied by: For this reason, the electric power to the car control panel 5 is supplied to the current collector 10 attached to the car.
And supplied from the sliding surface of the insulated trolley cable 9. The insulated trolley cable 9 is also used for the hall control panels 8-1,..., 8-m,.
1,..., 11-m,..., 11-n are attached to supply electric power.

Therefore, according to the embodiment of FIG. 2, a transmission cable required for transmission and reception of signals between the machine room and each hall is not separately required, and power is supplied from the machine room to each hall. Power cable is not required separately,
Man-hours and costs can be reduced.

FIG. 3 shows still another embodiment of the present invention. This embodiment corresponds to an embodiment in which the embodiment shown in FIG. 1 and the embodiment shown in FIG. 2 are combined. , A elevator and A elevator use the transmission cable 1 in common, but it is difficult to share the trolley cable.
a and 9b are used.

At this time, a group management control panel 12 is provided for controlling the movement of the elevators of the A-car and the B-car in an optimal operation, instead of individually controlling the two elevators provided side by side. Thus, signals are generated between the machine rooms 4a and 4b of each unit, the car control panels 5a and 5b, and the hall control panels 8-1,..., 8-m,. And transmission are executed under the control of the group management control panel 12. Therefore, according to the embodiment of FIG. 3, the transmission cable 1 is shared between the elevators of the respective units, and , 8-m,..., 8-n, the transmission cable 1 is shared, so that the man-hour and cost can be sufficiently reduced. In addition, the elevator movements of the A and B cars are group-managed and controlled. Always it is possible to obtain a precise operation state.

FIG. 4 shows still another embodiment of the present invention. In this embodiment, the group management control panel 12 and each of the hall control panels 8-1,..., 8-m,. The transmission cable 1 used for signal transmission with each car control panel 5a, 5b is shared for signal transmission between 8-n, and the transmission cable 1 is further connected to each hall control panel 8-1,. …, 8-m, ……, 8
It is also used for supplying DC power to -n.

As described above, this transmission cable 1
A tightly-coupled cable or a leaky coaxial cable in which two insulated conductors are paired are used. In the case of a tightly-coupled cable, the leaky coaxial cable is directly connected to the two conductors. May be connected to the center conductor and the outer conductor, respectively, with two wires from each of the hall control boards 8-1,..., 8-m,.

At this time, it is easy to share the transmission cable 1 for the transmission of the high-frequency signal for signal transmission and the transmission of the DC power by using an appropriate separating means such as a coil and a capacitor. It is feasible. Specifically, a high-frequency signal may be extracted through a capacitor, and DC power may be supplied through a coil.

[0047]

According to the present invention, signal transmission is carried out by a non-contact transmission cable, so that signal transmission between the elevator machine room and the car can be shared, and two cables can be used with one cable. Transmission by an elevator becomes possible.

Also, in the machine room and the car, and also in the machine room and the hall, a single transmission cable can be shared to transmit signals, so that the number of cables can be reduced, and the number of work steps and cost can be reduced. . Further, by supplying electric power by using an insulated trolley wire, the tail cord can be eliminated, and the stability of the car, the catch by the tail cord, and the disconnection accident can be eliminated, and the reliability as an elevator can be improved.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of an elevator signal transmission device according to the present invention.
It is explanatory drawing which shows Example of this.

FIG. 2 shows a second embodiment of the elevator signal transmission device according to the present invention.
It is explanatory drawing which shows Example of this.

FIG. 3 shows a third embodiment of the elevator signal transmission device according to the present invention;
It is explanatory drawing which shows Example of this.

FIG. 4 shows a fourth embodiment of the elevator signal transmission device according to the present invention;
It is explanatory drawing which shows Example of this.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Transmission cable 2a, 2b coupler 3 Duplexer 4, 4a, 4b Machine room control panel 5, 5a, 5b Car control panel 6 Terminator 7-1, 7-m, 7-n Coupler 8-1, 8- m, 8-n Hall control panel 9a, 9b Insulated trolley cable 10a, 10b Current collector 11-1, 11-m, 11-n Clamp (feed-in clamp) 12 Group control panel

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Seinosuke Yahiro 1070 Ma, Katsuta-shi, Ibaraki Pref.Hitachi, Ltd.Mito Plant, Hitachi Ltd. (72) Inventor Hiromi Inaba 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Within Hitachi Research Laboratory, Hitachi, Ltd. (72) Inventor Takeki Ando 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building System Services (72) Inventor Yuji Onishi 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd. (56) References JP-A-6-9167 (JP, A) JP-A-2-86583 (JP, A) Japanese Utility Model 3-112871 (JP, U) Japanese Utility Model Sho 61-148875 (JP, U) Japanese Patent Publication No. 56-48432 (JP) B2) (58) investigated the field (Int.Cl. ^7, DB name) B66B 1/00 - 9/18

Claims (4)

(57) [Claims] 1. An elevator in which signal transmission between an elevator car and a machine room is performed via a transmission cable capable of contactless transmission by weak radio waves disposed inside an elevator tower, wherein at least two adjacent cables are used. A signal transmission device for an elevator, wherein the transmission cable is shared between elevator towers. 2. An elevator in which signal transmission between an elevator car and a machine room is performed via a transmission cable capable of non-contact transmission by weak radio waves disposed inside the elevator tower. A signal transmission device for an elevator, wherein the signal transmission device is shared for signal transmission between a machine room and a hall control panel. 3. The insulated trolley cable according to claim 1 or 2, further comprising an insulated trolley cable disposed inside the elevator tower, wherein power transmission to at least one of the car and the hall is performed via the insulated trolley cable. A signal transmission device for an elevator, characterized in that: 4. The elevator according to claim 1, wherein the transmission cable comprises at least one of a tightly-coupled cable having two insulated conductors in pairs and a leaky coaxial cable. Signal transmission equipment.