JP2008066784A - Data transmission device, group control system for elevator, and elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently perform data transmission using optical signals between devices without requiring an optical element having complicated structure. <P>SOLUTION: An optical box 2 is connected to a transmission control unit 1. The optical box 2 has an optical transmitter 4 which converts data transmitted from the transmission control unit 1 into an optical signal and transmits it, and a leakage optical fiber 5a which is connected to the optical transmitter 4 to transmit the optical signal after the conversion to a plurality of communication partners. The optical box 2 internally has leakage optical fibers 5b, 5c, and 5d which are connected to the respective communication partners, and an optical receiver 9 which receives leak light beams emitted individually from the leakage optical fibers 5b, 5c, and 5d, converts those optical signals into electric signals, and passes them to the transmission control unit 1. Consequently, the data transmission using optical signals is efficiently performed between devices by using the leakage optical fibers 5a to 5d. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a data transmission apparatus using a leaky optical fiber, an elevator group management system, and an elevator apparatus.

  When constructing a data transmission system, an optical transmission device that is not easily affected by electromagnetic noise is used. The transmission form includes a loop type and a star type.

  In the case of the loop type, a method is generally provided in which an electrical / optical converter is provided in a transmission apparatus, and an electrical signal is converted into an optical signal and relayed between the apparatuses. However, there is a disadvantage that when a transmission device fails, it becomes impossible to relay an optical signal to the next transmission device.

In the star type, an optical signal sent from a transmission device is converted into an electrical signal, then converted into an optical signal again and distributed to another transmission device, and sent from the transmission device. There is a passive star coupler system that uses an optical element obtained by branching an optical signal into N to N and distributes the optical signal to another transmission apparatus as it is (see, for example, Patent Document 1). In an industrial system where electromagnetic noise is likely to occur, a passive star coupler system that can transmit an optical signal as it is is generally used.
JP-A-8-191273

  However, the passive star coupler system requires an optical element having a complicated structure, and requires advanced techniques for adjusting the optical element. Further, since the optical signal is distributed by the branched optical elements, the number of branches can be increased only to the number that can be detected on the receiving side, and the number of devices that can be connected is limited.

  The present invention has been made in view of the above points, and a data transmission apparatus capable of efficiently performing data transmission using an optical signal between apparatuses without requiring an optical element having a complicated structure, and An object is to provide an elevator group management system and an elevator apparatus using a data transmission apparatus.

  (1) The elevator group management system according to the present invention includes a transmission control device that performs transmission control of data using an optical signal, and an optical box connected to the transmission control device. The optical box is connected to the optical transmitter that converts the data transmitted from the transmission control device into an optical signal and transmits the optical signal, and transmits the converted optical signal to a plurality of communication partners. First leaking optical fibers for receiving, a plurality of second leaking optical fibers connected to each of the communication partners, and receiving leaked light individually radiated from these second leaking optical fibers And an optical receiver that converts these optical signals into electrical signals and passes them to the transmission control device.

  (2) An elevator group management system according to the present invention includes a group management control device that performs group management control of a plurality of elevators, and a plurality of units that are provided corresponding to each of the elevators and that control the operation of the elevator. In an elevator group management system comprising a control device, the group management control device and each unit control device are connected in a loop through a plurality of leaky optical cables, and the group management control device is connected to each unit. Transmission of data to the control device, or transmission of data from each unit control device to the group management control device is performed with an optical signal via each of the leaky optical cables connected to each, and from each of the leaky optical cables The radiated leakage light is received as reception data on the receiving side.

  (3) Moreover, the elevator apparatus of this invention is an elevator apparatus provided with the control board which controls the driving | running | working operation | movement of this car in the hoistway in the elevator apparatus provided with the car which raises / lowers the inside of a hoistway. A first leaking optical fiber that is provided along the up-and-down direction and optically transmits information to be transmitted from the control panel to the car; and provided on a side surface of the car along the up-and-down direction of the car, A second leaky optical fiber for optically transmitting information to be transmitted from the controller of the car to the control panel; and the car in the hoistway facing the second leaky optical fiber at a predetermined interval. A first optical receiver that receives the leaked light emitted from the second leaky optical fiber during reception as the data for reception and passes it to the control panel; and the first leak on the side of the car Optical fiber A second optical receiver that is provided oppositely and that receives the leaked light emitted from the first leaky optical fiber during the movement of the car as reception data and passes it to the controller of the car. It is characterized by having.

  According to the present invention, by connecting each device using a leaky optical fiber, data transmission by an optical signal can be efficiently performed between the devices without requiring an optical element having a complicated structure. .

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

(First embodiment)
FIG. 1 is a diagram showing a configuration of a data transmission apparatus using a leaky optical fiber according to the first embodiment of the present invention.

  The data transmission device includes a transmission control device 1 and an optical box 2 connected to the transmission control device 1. The transmission control device 1 performs data transmission control using an optical signal. The optical box 2 is provided with a pair of optical transmitters 4 and optical receivers 9 and stores a plurality (four in this case) of leaking optical fibers 5a to 5d. One of them (leaky optical fiber 5a) is connected to this apparatus, and the other (leaky optical fibers 5b, 5c, 5d) is connected to each of the transmission control apparatuses on the communication partner side.

  The optical transmitter 4 has a function of converting an electrical signal sent from the transmission control device 1 through the transmission signal line 3 into an optical signal and sending it to the leaky optical fiber 5a. The optical receiver 9 has a function of receiving the leaked light 8b, 8c, 8d emitted from the leaky optical fibers 5b, 5c, 5d, converting them into electrical signals as reception data, and passing them to the transmission control device 1. Have.

  The leaky optical fiber 5 a is arranged in a loop shape from the optical transmitter 4 via the transmission control device on the communication partner side, and the end thereof is housed in the optical box 2 of the transmission control device 1. The leaky optical fibers 5b, 5c, 5d are individually extended from other transmission control devices that are communication partners, and are disposed so as to face the optical receiver 9 in the optical box 2. Yes.

  The “leaky optical fiber” is a special optical fiber formed so as to leak light from the side surface using the refractive index of light.

  The electrical signal output as transmission data from the transmission control device 1 is converted into an optical signal by the optical transmitter 4 and then sent to the leaking optical fiber 5a. This optical signal travels in the leaky optical fiber 5a with a predetermined refractive index, but part of it leaks from the side surface of the leaky optical fiber 5a. 6a in the figure indicates the leaked light. This leakage light 6a is received as data of this apparatus by the transmission control apparatus on the communication partner side.

  On the other hand, in the leaky optical fibers 5b, 5c, and 5d, part of the optical signal leaks from the respective side surfaces as in the leaky optical fiber 5a. 6b, 6c and 6d in the figure indicate the leaked light.

  Here, since the leaked light 6b, 6c, 6d radiated from the respective portions of the leaky optical fibers 5b, 5c, 5d has a time lag, when the optical receiver 9 receives a large number of these, Later, complicated processing such as filtering is required. Therefore, a pair of shields 7a and 7b are provided at portions of the leaky optical fibers 5b, 5c, and 5d that face the optical receiver 9. Of the leaked light 6b, 6c, 6d radiated from the respective portions of the leaky optical fibers 5b, 5c, 5d by the shields 7a, 7b, the leaked light 8b, 8c, 8d (the portions facing the optical receiver 9). (Leaked light without time lag) can be received pinpoint as reception data.

  The shields 7 a and 7 b also serve to block the leaked light 6 a emitted from the leaky optical fiber 5 a that is the own cable from the optical receiver 9.

  Each data (optical signal) transmitted through the leaky optical fibers 5a to 5d is added with identification information of the transmission source, and the reception side identifies the transmission source based on the identification information. can do. In other words, in the example of FIG. 1, when the optical receiver 9 receives the leakage lights 8b, 8c, and 8d, for example, the leakage light 8b is the data of the device B, the leakage light based on the identification information added to each. 8c can be identified as data of device C, and leaked light 8b can be identified as data of device D.

  Moreover, the optical receiver 9 is comprised, for example with a photodiode or a photomultiplier. “Photomultiplier” refers to a photomultiplier tube, which is a highly sensitive photosensor in which a photocathode, a focusing electrode, an electron multiplier, and an anode are housed in a vacuum tube.

  In such a configuration, the transmission control device 1 attaches its own device identification information to various data including control information and sends it to the optical box 2 with respect to another transmission control device (not shown) as a communication partner. . The data sent to the optical box 2 is converted into an optical signal by the optical transmitter 4 and is incident on one end face of the leaky optical fiber 5a. The incident optical signal travels toward the other end surface while meandering the leaky optical fiber 5a. In the meantime, leakage light 6a is radiated from the side surface of the leakage optical fiber 5a.

  An optical box similar to the optical box 2 in FIG. 1 is provided on the communication partner side, and the leaked light 6 a emitted from the leaky optical fiber 5 a can be received as data of the transmission control device 1.

  On the other hand, data is received by receiving the leaked light 6b, 6c, 6d radiated from the leaked optical fibers 5b, 5c, 5d in the optical box 2 by the optical receiver 9. In this case, since only the leaked light 8b, 8c, 8d of the portion facing the optical receiver 9 can be received by the shields 7a, 7b, it is not necessary to perform processing such as filtering later. The leaked lights 6 b, 6 c, 6 d received by the optical receiver 9 are converted into electric signals and passed to the transmission control device 1 via the reception signal line 10.

  As described above, according to the present embodiment, various data can be communicated at high speed as an optical signal by using a leaky optical fiber disposed between devices without using an optical element having a complicated structure. It becomes possible. In this case, since the data of each communication partner can be received by one optical receiver on the receiving side, the number of devices that can be connected is not limited as in the conventional optical communication, and it is efficient with a simple structure. Data transmission can be realized.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  FIG. 2 is a diagram partially showing the configuration in the optical box in the data transmission apparatus according to the second embodiment of the present invention, and shows a state seen from the optical axis direction of the leaky optical fiber. In FIG. 2, the same parts as those in FIG. 1 in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  The difference from the configuration of FIG. 1 is that a fixed base 11 and a condenser lens 12 are provided in the light box 2. The fixed base 11 is for fixing together the leaky optical fibers 5b, 5c, 5d connected to each communication partner, and a plurality of the fixed bases 11 are arranged at predetermined intervals in the axial direction. . The fixed base 11 includes cable support portions 11a to 11c having a concave cross section. The leaky optical fibers 5b, 5c, and 5d are fitted into the cable support portions 11a to 11c and supported side by side in the horizontal direction.

  The condensing lens 12 is provided on the front surface of the optical receiver 9, and collects the leakage light 8 b, 8 c, 8 d for reception radiated from the side surfaces of the leaky optical fibers 5 b, 5 c, 5 d to the optical receiver 9. give. 13b, 13c, and 13d in the figure indicate the condensed leaked light.

  In such a configuration, the leaky optical fibers 5b, 5c, and 5d connected to each communication partner are supported in the horizontal direction by the fixed base 11 provided in the optical box 2. In this case, the light intensity of the leaked light 8b, 8c, 8d emitted from the leaky optical fibers 5b, 5c, 5d varies depending on the transmission distance between the present apparatus and the communication partner. Therefore, the steps of the cable support portions 11a to 11c formed on the fixed base 11 are adjusted so that the light intensities of the leakage lights 8b, 8c, and 8d are substantially constant.

  Further, the leakage light 8b, 8c, 8d for reception radiated from the side surfaces of the leaky optical fibers 5b, 5c, 5d is condensed by the condenser lens 12 and given to the optical receiver 9. Thereby, a predetermined reception level can be secured. When the optical receiver 9 receives the leaked lights 13b, 13c, and 13d collected by the condenser lens 12, it converts them into electric signals and passes them to the transmission control device 1.

  As described above, according to the present embodiment, the leakage optical fiber is supported using the fixed base, and the leakage light emitted from the leakage optical fiber is provided to the optical receiver via the condenser lens. Therefore, even weak leaked light can be stably received, and can be used even in a range where the reception sensitivity of the optical receiver is narrow.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  FIG. 3 is a diagram partially showing the configuration in the optical box in the data transmission apparatus according to the third embodiment of the present invention, and shows a state seen from the optical axis direction of the leaky optical fiber. In FIG. 3, the same parts as those in FIG. 1 in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  A difference from the configuration of FIG. 1 is that a curved surface fixing base 14 is provided in the optical box 2. The curved surface fixing base 14 is for fixing the leaky optical fibers 5b, 5c and 5d connected to the respective communication partners together as in the case of the fixing base 11 of the second embodiment. A plurality are arranged at predetermined intervals in the axial direction.

  Here, the fixed base 11 of the second embodiment is configured to support the leakage optical fibers 5b, 5c, and 5d in the horizontal direction with respect to the optical receiver 9, whereas the curved base of the present embodiment. 14 is different in that the leaky optical fibers 5b, 5c, and 5d are curved so as to be arranged uniformly with respect to the optical receiver 9.

  That is, the cable support portions 14a to 14c formed on the curved surface fixing base 14 are curved toward the optical receiver 9 as shown in FIG. The leaky optical fibers 5b, 5c, and 5d are fitted into these cable support portions 14a to 14c and supported toward the optical receiver 9.

  In such a configuration, the leaky optical fibers 5b, 5c, 5d connected to each communication partner are supported so as to surround the optical receiver 9 by the curved surface fixing base 14 provided in the optical box 2. In this case, as in the second embodiment, when the leaky optical fibers 5b, 5c, 5d are arranged in the horizontal direction, the leaked light 8b, 8d radiated from the leaky optical fibers 5b, 5d on both sides is converted into the optical receiver 9. Therefore, there is a possibility that a sufficient reception level cannot be obtained.

  On the other hand, in the present embodiment, since the leaky optical fibers 5b, 5c, 5d are supported so as to surround the optical receiver 9, the leaked light 8b, 8c, 8d emitted from the leaky optical fibers 5b, 5c, 5d. Are uniformly incident toward the light receiving surface of the optical receiver 9, and a sufficient reception level can be ensured. When the optical receiver 9 receives the leaked light 8b, 8c, 8d, it converts it into an electrical signal and passes it to the transmission control device 1.

  As described above, according to the present embodiment, the configuration in which the leaky optical fiber is supported using the curved surface fixing base ensures a sufficient reception level without requiring an optical member such as a condenser lens. Can do.

(Fourth embodiment)
Next, a case where the transmission control device of the present invention is applied to an elevator group management system will be described as a fourth embodiment.

  FIG. 4 is a diagram showing a configuration of an elevator group management system according to a fourth embodiment of the present invention, in which a group management control device and each unit control device are connected in a loop by a leaky optical fiber. ing. In FIG. 4, the same parts as those in FIG. 1 in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  The group management control device 21 is a control device for performing group management control of a plurality of elevators. The group management control device 21 includes a transmission control device 1 and an interface unit 23 in addition to a group management control unit 22 composed of a CPU. The group management control unit 22 performs control related to general group management, such as hall call assignment control. The transmission control device 1 is connected to the group management control unit 22 via the interface unit 23.

  On the other hand, the number control device 24 is provided corresponding to the number of each elevator, and controls the operation of the elevator according to a command from the group management control device 21. The machine control device 24 includes a transmission control device 1 and an interface unit 26 in addition to a control unit 25 composed of a CPU. The control unit 25 performs general operation control such as controlling the raising / lowering operation of the car or controlling the opening / closing of the door when landing. The transmission control device 1 is connected to the control unit 25 via the interface unit 26.

  The transmission control device 1 and the optical box 2 are the same as those in FIG. In other words, the optical box 2 is provided with a pair of optical transmitters 4 and optical receivers 9 although not shown here. The optical box 2 houses a plurality of leaking optical fibers 5, one of which is connected to the optical transmitter 4 for data transmission, and the other is an optical receiver 9 for reception. It is arranged near.

  That is, in this system, the group management control device 21 and the elevator control device 24 of each elevator are connected in a loop via a plurality of leaky optical fibers 5 so that data can be transmitted and received with each other by optical signals. It is configured.

  The leaking optical fiber 5 is a special optical fiber formed so as to leak a part of the optical signal passing through it as described above. In this case, if leaked light is emitted from each part of the leaky optical fiber 5, there is a possibility of affecting each device of the elevator. Therefore, it is preferable to devise some material measures on the side surface of the leaking optical fiber 5 so that the leaking light is emitted only at the connection point of each device, that is, the optical box 2.

  In such a configuration, the data transmitted from the number control device 24 is converted into an optical signal by the optical box 2 corresponding to the number control device 24 and then another number control device via the leaked optical fiber 5. 24 and the group management control device 21. Since the identification information of the number controller 24 is added to this data, the receiving side can identify the data transmission source based on the identification information.

  The data output from the machine control device 24 is mainly data indicating the operation state of the elevator such as a hall call and a car call. The group management control device 21 receives data from the machine control device 24 via the optical box 2 corresponding to the group management control device 21, thereby executing a predetermined process relating to the data.

  On the other hand, the data transmitted from the group management control device 21 is converted into an optical signal in the optical box 2 corresponding to the group management control device 21, and then the elevator controller 24 of each elevator through the leaky optical fiber 5. Is transmitted. Since the identification information of the group management control device 21 is added to this data, the receiving side can identify the data transmission source based on the identification information.

  The data output from the group management control device 21 is mainly data for controlling the operation of each elevator such as hall call assignment information. The number control device 24 receives data from the group management control device 21 via the optical box 2 corresponding to the number control device 24, thereby executing a predetermined process related to the data.

  As described above, according to the present embodiment, since the group management control device and each unit control device are connected using the leaky optical fiber to perform bidirectional communication using the optical signal, A group management system with a loop configuration can be realized.

(Fifth embodiment)
Next, the case where the transmission control apparatus of this invention is applied to an elevator apparatus is demonstrated as 5th Embodiment.

  FIG. 5 is a diagram showing a configuration of an elevator apparatus according to a fifth embodiment of the present invention, and shows a state in which a leaking optical fiber is disposed in an elevator hoistway.

  In the figure, 30 is a building, and 31 is an elevator hoistway installed in the building 30. A car 41 is provided in the hoistway 31 so that it can be moved up and down by driving the hoisting machine 42. A rope 43 is wound around the hoisting machine 42, a car 41 is attached to one end of the rope 43, and a counterweight 44 is attached to the other end. Thereby, with the rotation of the hoisting machine 42, the car 41 and the counterweight 44 are lifted and lowered through the rope 43 in a slidable manner.

  The control panel 32 for controlling the elevator is connected to the machine control device 33 through a signal line 34. A converter 36 is connected to the control panel 32 via a signal line 35.

  The converter 36 has a conversion function from an electrical signal to an optical signal and a conversion function from an optical signal to an electrical signal. One end of a leaky optical fiber 37 is connected to the converter 36. In addition, a plurality of optical receivers 39 a to 39 e are cascade-connected to the converter 36 via a signal line 38.

  The leaky optical fiber 37 is provided on the wall of the hoistway 31 along the elevating direction of the car 41. The optical receivers 39a to 39e are provided on the wall of the hoistway 31 and the like at predetermined intervals along the elevating direction of the car 41.

  On the other hand, the car controller 45 installed in the car 41 is provided with a function for converting an electrical signal into an optical signal and a function for converting an optical signal into an electrical signal. One end of a leaky optical fiber 46 is connected to the car controller 45 via a signal line 47. In addition, two optical receivers 48 a and 48 b are cascade-connected to the car controller 45 via a signal line 49.

  The leaky optical fiber 46 is provided on the side surface of the car 41 in the up and down direction so as to face the optical receivers 39a to 39e. The optical receivers 48 a and 48 b are provided above and below the side surface of the car 41 so as to face the leaky optical fiber 37.

  In such a configuration, the control panel 32 that has received a command from the machine control device 33 converts the information to be transmitted to the car 41 into an optical signal by the converter 36, and transmits it to the leaking optical fiber 37 in the hoistway. Send it out. The information includes video information, announcement information, and the like in addition to control information related to driving of the car 41.

  The optical signal sent from the converter 36 to the leaky optical fiber 37 travels through the leaky optical fiber 37 with a predetermined refractive index, but a part leaks from the side surface of the leaky optical fiber 37. 50 in the figure indicates the leaked light. The leaked light 50 is received by the car-side optical receiver 48 a or receiver 48 b while the car 41 is moving, and is sent to the car controller 45. The car controller 45 converts this into an electrical signal and processes it.

  On the other hand, information transmitted from the car 41 to the control panel 32 is converted into an optical signal by the car controller 45 and then transmitted to the leaky optical fiber 46. The information includes a car call and an emergency call.

  The optical signal sent from the car controller 45 to the leaky optical fiber 46 travels through the leaky optical fiber 46 with a predetermined refractive index, but a part leaks from the side surface of the leaky optical fiber 46. 51 in the figure shows the leaked light. The leakage light 51 is received by one of the optical receivers 39 a to 39 e on the hoistway 31 side during the movement of the car 41 and sent to the converter 36. The converter 36 converts this into an electrical signal and passes it to the control panel 32.

  As described above, according to the present embodiment, since the control panel and the car controller are connected in a non-contact manner using a leaky optical fiber, various transmission cables such as a tail cord are not required. Information can be freely transmitted and received.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various forms can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

FIG. 1 is a diagram showing a configuration of a data transmission apparatus using a leaky optical fiber according to the first embodiment of the present invention. FIG. 2 is a diagram partially showing a configuration in the optical box in the data transmission apparatus according to the second embodiment of the present invention. FIG. 3 is a diagram partially showing a configuration in an optical box in a data transmission apparatus according to the third embodiment of the present invention. FIG. 4 is a diagram showing the configuration of an elevator group management system according to the fourth embodiment of the present invention. FIG. 5 is a diagram showing a configuration of an elevator apparatus according to the fifth embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Transmission control apparatus, 2 ... Optical box, 3 ... Transmission signal line, 4 ... Optical transmitter, 5a-5d ... Leakage optical fiber, 6a-6d ... Leakage light, 7a, 7b ... Shielding body, 8b-8d ... Reception Leaking light, 9 ... optical receiver, 10 ... received signal line, 11 ... fixed base, 11a-11c ... cable support, 12 ... condensing lens, 13a-13d ... condensed leaked light, 14 ... curved surface Fixed base, 14a to 14c ... Cable support part, 21 ... Group management control device, 22 ... Control part, 23 ... Interface part, 24 ... No. Machine control device, 25 ... Control part, 26 ... Interface part, 30 ... Bill, DESCRIPTION OF SYMBOLS 31 ... Hoistway, 32 ... Control board, 33 ... Unit control apparatus, 34 ... Signal line, 35 ... Signal line, 36 ... Converter, 37 ... Leak optical fiber, 38 ... Signal line, 39a-39e ... Optical receiver, 41 ... Ride car, 42 ... Hoisting machine, 43 ... Rope, 4 ... counterweight, 45 ... car controller, 46 ... leaky optical fiber, 47 ... signal line, 48a, 48b ... optical receiver, 49 ... signal line, 50 ... leakage light, 51 ... leakage light.

Claims (10)

It consists of a transmission control device that controls the transmission of data using optical signals, and an optical box connected to this transmission control device,
The light box
An optical transmitter that converts the data transmitted from the transmission control device into an optical signal and transmits the optical signal;
A first leaking optical fiber connected to the optical transmitter for transmitting the converted optical signal to a plurality of communication partners;
A plurality of second leaky optical fibers connected to each of the communication partners;
An optical receiver that receives leaked light individually radiated from the second leaky optical fiber as an optical signal for reception, converts the optical signal into an electrical signal, and passes the electrical signal to the transmission control device. A data transmission apparatus characterized by that.   2. The data transmission apparatus according to claim 1, wherein the optical receiver is a photodiode.   2. The data transmission apparatus according to claim 1, wherein the optical receiver comprises a photomultiplier. The light box
2. The data transmission according to claim 1, further comprising a shield disposed so as to cause the optical receiver to receive leakage light emitted from a specific portion of each of the second leakage optical fibers. apparatus. The light box
A fixing base for fixing the second leaky optical fibers together in one piece;
2. The condenser lens according to claim 1, further comprising: a condensing lens that condenses the leaked light emitted from each of the second leaky optical fibers fixed by the fixing base and applies the leaked light to the optical receiver. Data transmission equipment.   The fixed base has a plurality of support portions for supporting the second leaky optical fibers side by side at a predetermined interval, and the light intensity of the leaked light of the second leaky optical fibers with respect to the optical receiver 6. The data transmission apparatus according to claim 5, wherein the step of each of the support portions is adjusted so that the distance is substantially constant. The light box
The second leaky optical fibers are fixed together as one, and the leaked light radiated from them is uniformly directed toward the light receiving surface of the optical receiver toward the optical receiver. The data transmission apparatus according to claim 1, further comprising a fixed base that is curved. In an elevator group management system comprising a group management control device that performs group management control of a plurality of elevators, and a plurality of unit control devices that are provided corresponding to each of the elevators and that control the operation of the elevator,
Connect the group management control device and each unit control device in a loop through a plurality of leaky optical cables,
Transmission of data from the group management control device to each unit control device, or transmission of data from each unit control device to the group management control device via the respective leaky optical cables respectively connected thereto Performed in
An elevator group management system, wherein leakage light emitted from each of the leakage light cables is received as reception data on the receiving side. A light box is provided at each connection point of the group management control device and each unit control device,
The light box
An optical transmitter for converting data transmitted from the device into an optical signal;
A first leaking optical fiber connected to the optical transmitter for transmitting the converted optical signal to a plurality of communication partners;
A plurality of second leaky optical fibers connected to each of the communication partners;
An optical receiver that receives the leaked light individually radiated from the second leaky optical fiber as a receiving optical signal, converts the optical signal into an electrical signal, and passes it to the device. A featured elevator group management system. In an elevator apparatus equipped with a car that moves up and down in the hoistway and a control panel that controls the operation of the car,
A first leaky optical fiber provided in the hoistway along the raising / lowering direction of the car and optically transmitting information to be transmitted from the control panel to the car;
A second leaky optical fiber that is provided on a side surface of the car along the ascending / descending direction of the car and optically transmits information to be transmitted from the controller of the car to the control panel;
Leaked light radiated from the second leaky optical fiber is received as reception data provided at predetermined intervals in the hoistway so as to face the second leaky optical fiber. A first optical receiver to be passed to the control panel;
Provided on the side surface of the car so as to face the first leaky optical fiber, and receives the leaked light emitted from the first leaky optical fiber during the movement of the car as reception data. An elevator apparatus comprising: a second optical receiver for passing to a controller of the car.

Images