JPS61136886A - Signal transmitter for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an elevator signal transmission device for transmitting signals between a common control panel inside an elevator machine room and elevator equipment outside the elevator machine room.

[Technical background of the invention and its problems]

Generally, the elevator is the first. Second. It is composed of a third wiring system. In FIG. 9, the elevator hoistway 10
The elevator car 12 inside is the hoisting machine 1 in the machine room 14.
It moves up and down according to the operation in step 1. The display panel 13 installed at the entrance of each hall has a hall call device including a hall call registration getan, etc., and the control panel 15 installed in the elevator machine room z4 is connected to the hoistway wiring system (first wiring system). )zg. This wiring system 16 includes car position, turn, direction light display signals, and hall call registration. Contains the tongue lamp display signal.

The control panel 15 and the heel 12 are electrically connected by a moving cable wiring system (second wiring system) 17. This wiring system 17 is used for car position, direction light display signals, and car call input signals. Includes tongue/lamp signals and various operation switch signals.

Further, the control panels 15 in the machine room 14 are electrically connected to each other by a machine room wiring system (third wiring system) not shown.

Conventionally, in the signal lines of the first to third wiring systems described above, one signal line is wired for each signal. For this reason, as buildings have become taller in recent years and the number of floors that elevators stop on has increased, an increase in the number of signal lines (specifically cables) will complicate the wiring process, which is a problem. do not have. In particular, mobile cable wiring systems have the following problems.

■ As the number of signals increases, the size of the cable increases, making it difficult to improve its bending characteristics as the car moves up and down.

■ In response to the digitalization of signals, it becomes difficult to balance requirements such as electromagnetic shielding with bending characteristics.

As a solution to these problems, consideration is being given to using optical fiber cables as moving cables and the like. However, since the moving cable of the elevator is bent every time the elevator goes up and down, high reliability is required regarding this bending.

Additionally, optical fiber quesors generally have a problem in that loss increases at low temperatures. Furthermore, since optical fiber cables require expensive optical branching connectors to branch optical signals, controlled equipment such as hall getans, lamps, position indicator lamps, lanterns, and chimes are distributed in each hall, such as in elevators. In the system, there is no cost advantage due to optical serial transmission. In addition, in the case of serial transmission using a normal cable that does not use light, a modem is required on the controlled device side, which further increases the cost of the entire system. In addition, the serial signal from the optical fiber cable is generally transferred to a microcombi-system using a synchronous/asynchronous serial data transfer circuit USART (
Univsrsal ayt+ahronous/an
tisythchranousreC@1ver/lr
ansm1ttsr), but the more data that is transmitted, the more the microprocessor is prioritized for data processing. May cause adverse effects.

[Purpose of the invention]

The present invention has been made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide an elevator signal transmission device that eliminates the need for signal lines for controlling elevator equipment that are connected to AC power distribution lines. .

[Summary of the invention]

In order to achieve the above object, the present invention is made as follows. That is, the first invention connects the AC power source of the common control panel inside the elevator machine room and the elevator equipment corresponding to each hall outside the elevator machine room with AC power lines, and connects at least both ends of each AC power line. 1st each. A second transmitter/receiver is connected, and an address setting device for identifying the hall is connected to each end of the AC power line to which the elevator equipment is connected.
The present invention is characterized in that a signal line for controlling the elevator equipment by transmitting and receiving a high-frequency modulated signal superimposed on the AC power line is removed.

The second invention connects the AC power source of the common control panel inside the elevator machine room and the elevator equipment corresponding to each hall outside the elevator machine room with AC power lines, and connects the AC power source directly to the receiving end of each AC power line. Connect each filter,
A first and a second transmitter/receiver are connected to at least both ends of each AC power line, and an address setting device for identifying the hall is connected to each end of the AC power line to which the elevator equipment is connected. The present invention is characterized in that a signal line for controlling the elevator equipment by transmitting and receiving a high-frequency modulated signal superimposed on the alternating current power line and thereby controlling the elevator equipment is removed.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings. FIG. 1 is a conceptual diagram of the apparatus of the present invention, and shows an example in which there are three elevators, but the elevator is not limited to this, and any number of elevators may be used. In the figure, 21 is a commercial AC power supply, 22A to 22C are no-fuse breakers installed in each elevator unit, 22D is a no-fuse breaker for group management, and 231 to 23C or 23D is installed in each elevator unit or group. (hereinafter referred to as low-pass filter), 241-24D, 251-
25D is an AC power supply superimposed harmonic signal transmitter/receiver (hereinafter referred to as a transmitter/receiver), and if 24A to 240 are transmitters, 2
5A to 25D are used in combination as a receiver.

The low-pass filters 23 to 23D each consist of a capacitor 231 and an inductance 232 as shown in FIG.
/2 and the nominal impedance is KX cutoff frequency f1, and this characteristic is K fk 5 as shown in FIG. That is, only the low frequency ψt==Q~1 shown in FIG. 3 is passed without attenuation. Therefore, the transceivers 241 to 24D, 25 in FIG.
The harmonic modulation signals received between 1 and 250 are cut off by low-pass filters 231-23D, respectively.

FIG. 4 is a schematic diagram showing an embodiment of the elevator signal transmission device of the present invention. 26 is a group management microcomputer that instructs the hall lamps to turn on or off; 27;
is the output register of this microcomputer 26, 28
1 is a hall rung corresponding to hall i, 29 is a black signal generator of the transceiver 25D1, 301 is an amplifier corresponding to hall Bc which amplifies the output F of the transceiver 25D1, and 311 is installed in hall l. 331 is a clock signal generator of the transceiver 25Di, and 341 is a demodulation circuit corresponding to Hall 1. Similarly, the hall lamp controller 32 corresponding to the hall k has a transmitter/receiver z50.
1 amplifier 30k for hall lamp 28.

The address setter 31 includes one clock, and the signal generator 33 includes one demodulation circuit 34k.

FIG. 5 shows the above transmitter/receiver 24D, 25D1.25D.
It is a professional diagram showing the specific configuration of, for example, a 24D of the K. That is, 241 has a serial data input terminal SDI and an input circuit that outputs serial data input from this terminal, 242 a serial/parallel converter that converts this serial data into parallel data, and 243 this serial data terminal. A demodulation circuit that regenerates the parallel data from the parallel converter 242 into the originally sent signal, 244 a logic circuit that performs logical processing on the output of this demodulation circuit 243, and 246 the above-mentioned serial-to-parallel converter 24.
a parallel-to-serial converter that converts parallel data of 2 into serial data;
245 is a modulation circuit that outputs the output of this parallel-to-serial converter 246 or the above-mentioned serial-to-parallel converter 242 onto a carrier wave via a serial data output terminal SDO, and 247 is a start terminal ST and a reset terminal R8.
T, a timing circuit that further has an answer back signal terminal DR and controls the input circuit 241; 248 is an oscillation circuit that has an output terminal 08CI l0SC; AO"
")"* is an address terminal, and Fo-wp3 is a function setting terminal.

In the circuit configured as shown in FIG.
, When outputting a lamp lighting signal, output register 2
7 to output the address of the hall lamp controller 321 to the address terminal AoNA of the transmitter/receiver 240.
Rung lighting data to function setting terminals F, ~F3
and a transmission start signal are output to the start terminal ST, respectively.

Here, the operation of the transmitter/receiver 24D will be explained, and the operating states of this LSI include the following standby state,
311 for sending and receiving states! There are similar conditions.

(a) Standby state In this state, the LSI is on standby, and at this time, the serial data input terminal SDI, start terminal B
It accepts input to T and, in principle, does not accept other states. In principle, it automatically returns to the standby state from any other state, and it unconditionally returns to the standby state when the RESET terminal R8T)'CIJ signal is applied.

(b) Transmission state When a start signal is input to the start terminal ST of L8I in the standby state, the system is activated and the transmission operation is started. 1 is added to the data set by the address terminals 0 to AI and the function setting terminals F and .about.F. All bits of data are modulated and serially output from the serial data output terminal SDO. Also, to prevent malfunction, the same data of all bits is output again, and then automatically returns to the standby state. FIG. 7 is a flowchart showing the operation in the above-described transmission state.

(c) Reception state When data is input to the serial data input terminal SDI of the LSI in the standby state, the system is activated and reception operation is started. First, to check the input data, the header is checked, the nobility is checked, and the data is matched twice. If there is an error, the system returns to the standby state. Furthermore, it checks that the set address matches the address in the received data, and if they do not match, it returns to the standby state. If they match, the received data is sent to address terminal Ao4A, function setting terminal Fo.
Output to %F, answer, back signal terminal DRJ
Output C@H'. The method for returning to standby mode varies depending on the operating mode. Figure H8 is a flowchart showing the operation in the above-mentioned reception state.

FIG. 6 is a time chart showing the operation of the transceiver Z4D shown in FIG.

It can be understood that since the frequency is modulated at 120 kHz and transmitted and received, it can be completely separated from the power supply frequency of 50 or 60 Hz.

Next, as shown in FIG. 7, the operation after all bits of data are transmitted twice from the serial data output terminal SDO will be described. That is, all bits of data are harmonic data superimposed on the AC power supply 21, and this harmonic data is transmitted to the hall lamp controller 32'l of FIG.
It is commonly received by all 32. The harmonic data is input to the demodulation circuit 34k, and simultaneously input to the 7th real data input terminal 8DI of the transceiver 250.
As shown in the figure, the internal system starts up at 5 and checks whether the hall rung address of the floor in the address setter 31 and the received address match or do not match.If they do not match, the system goes into standby mode, and if the addresses match, A signal is output to the function setting terminals F6 to F3 of the transmitter/receiver 250, and the signal is output to the hall lamp 28k via the amplifier 30k.
lights up. 1. What has been described above is an example of signal transmission between the common block and the hall lamp, but it is also possible to open the main control panel and car interior operation panel that are thrown into the elevator machine room.

According to the embodiment described above, an AC power line is used for signal exchange between elevator equipment, and a high frequency modulation signal is superimposed on the AC power to perform elevator signal transmission, so an optical fiber cable is used. There are no problems in using it, and there is no need for signal lines to control elevator equipment. This allows for stable signal transmission even when the objects to be controlled are distributed over halls, cars, monitoring panels, etc. Also, at the receiving end of the AC power supply 21, there are low frequency harmonics 23A to 23.
C is installed, it is possible to prevent interference between high frequency signals. In other words, even if multiple elevators are installed, there is only one AC power supply, so if each elevator simply superimposes a control signal on the AC power line, the signals will mix between each elevator. .

〔Effect of the invention〕

According to the present invention described above, it is possible to provide an elevator signal transmission device that completely eliminates the need for signal lines for controlling elevator equipment connected to AC power distribution lines.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram showing the schematic configuration of the elevator signal transmission device of the present invention, and FIGS. 2 and 3 are the configuration and characteristics of the constant-type low-pass filter shown in FIG. 1. Figure 4 shows each
The figure is a block diagram showing one embodiment of the elevator signal transmission device of the present invention, FIG. 5 is a block diagram showing the specific configuration of the transceiver shown in FIG. 4, and FIG. 6 is the operation of the transceiver shown in FIG. 4. FIG. 7 and FIG. 8 are flowcharts to explain the operation of the transmitter/receiver in FIG. This is a diagram for DESCRIPTION OF SYMBOLS 10... Hoistway, 12... Car, 13... Display panel, 15... Control panel, 16... Hoistway wiring system, 1
7... Mobile cable wiring system, 21... AC power supply,
221~22D... No fuse breaker, 23A~
23D... Definitely shaped waver, 24A to 24D. 25A to 25D...Transmitter/receiver, 26...Group control microcontroller 2! L-taper, 27... Output register, 28
1.28k...Hall lamp, 29,331°33k
...Clock signal generator, 301.30k...Amplifier, 311.31k...Address setter, 321.3
2k...Hall lamp controller, 341.34k
...Demodulation circuit. Figure 2 Figure 2 Figure 3 Figure 5 Figure 6 Figure 7

Claims (2)

[Claims] (1) Connect the AC power source of the common control panel inside the elevator machine room and the elevator equipment corresponding to each hall outside the elevator machine room using AC power lines, and connect the first and second AC power lines to at least both ends of each AC power line. 2 transceivers are connected, and an address setting device for identifying the hall is connected to each end of the AC power line to which the elevator equipment is connected, and a high frequency modulated signal is connected to the AC power line. A signal transmission device for an elevator, characterized in that a signal line for superimposing transmission and reception and thereby controlling the elevator equipment is removed. (2) Connect the AC power supply of the common control panel inside the elevator machine room and the elevator equipment corresponding to each hall outside the elevator machine room with AC power lines, and install a low-pass filter at the receiving end of each AC power line. and a first and second transmitter/receiver are connected to at least both ends of each AC power line, respectively, and an address for identifying a hole at each end of the AC power line to which the elevator equipment is connected. A signal transmission device for an elevator, characterized in that a setting device is connected to the signal line for transmitting and receiving a high-frequency modulated signal superimposed on the AC power line, thereby controlling the elevator equipment.