JPH0248385A - Signal transmitter for elevator - Google Patents

Abstract

PURPOSE:To make improvements in reliability and universality with a structure of low cost by installing plural pieces of transmitting and receiving circuits in one signal transmitting host controller, and performing signal transmission control over a systematic bus line. CONSTITUTION:An elevator controller 1 connected to a network transmission controller 17 is connected to each of floor input-output terminal units 4a-4c via a transmitter-receiver circuit 2a and also to each of cage-in-out input-output terminal units 6, 13 via a bus line 3b, by a signal transmitting host controller 2, respectively. Accordingly, signal transmission is performable at separate timing each, and when this signal transmission is not carried out with one side of the bus line 3a or 3b, the other side signal transmission is performable, thus transmission efficiency and flexibility are improved. Thus, improvements in reliability and universality are promotable without entailing an increase in cost.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevator signal transmission device, and particularly to a computer-controlled elevator control system that performs control using multiple data transmission lines (bus lines). The present invention relates to a signal transmission device suitable for.

[Conventional technology]

With the enrichment of elevator services, car position indicators and hall call devices are being installed at each platform.
The number of wires between the elevator control device and the destination floor call registration device or guide display device installed inside the car or at the landing has increased, creating problems in terms of wiring space and installation workability.

Therefore, in order to reduce the number of wires, a method was proposed in which a microcomputer (hereinafter abbreviated as "microcomputer") was installed on each floor and in the car, and data was transmitted serially using this system, such as in Japanese Patent Laid-Open No. 194943/1983. being done.

[Problem to be solved by the invention]

The above conventional technology uses a pair of transmission lines with a bus type transmission line, and uses a centralized control device installed in a control device in a machine room, with terminals installed on each floor, terminals installed in a passenger car, and monitoring devices located relatively far away. It is a configuration that drives panel terminals, and electrically insulates and separates each bus line system (hall bus line, 9-car bus line, monitoring board bus line, etc.), and the number of connectable terminals and transmission using the bus method. Distance (JP-A-61-
No. 194943 deals with transmission using an optical fiber using electric-to-optical conversion, which does not take into consideration the problem of increasing costs, and has the following problems.

1. When a central control device installed in one machine room is connected to each floor, each floor, a monitoring panel, etc. via a transmission control device using a bus method using a pair of transmission lines (one system of transmission lines), for example, If a terminal installed on any floor fails, especially if the bus line is short-circuited due to failure of the signal transmission drive element of the bus line, all terminals connected to this bus line will be unable to communicate with the host and signal. You will no longer be able to take classes.

In other words, if this failure mode occurs, signal transmission between the cars will also become impossible.

For the safety of passengers, it is necessary to bring the elevator to an emergency stop and prevent the elevator from restarting until signal transmission to the car is resumed. Therefore, if one terminal at the platform fails, passengers will be stranded.

2. Also, if the hall terminal installed on each floor and the terminal installed in the car are excited by the same bus line, the transmission line will branch in the machine room or above the hoistway, and when viewed from the branch point, This means that two transmission lines are connected in parallel, and the characteristic impedance of the transmission line becomes 1/2.

That is, waveform distortion occurs due to reflection from impedance discontinuities in the transmission path, leading to a decrease in reliability of signal transmission.

3. If the bus line to the monitoring panel that is wired from the elevator machine room to the outside is connected to the bus line to which the hall terminal or car terminal that controls elevator operation is connected, it may be affected by external noise. Noise can easily enter the bus line of the monitoring panel, leading to a decrease in the reliability of signal transmission as in item 2. Moreover, if optical communication is implemented to prevent this, a problem will arise that will lead to an increase in costs.

An object of the present invention is to provide a bus-based signal transmission system with a structure in which an independent bus line can be driven by a single signal transmission host control device, thereby improving signal transmission efficiency and transmission path reliability at low cost. It is an object of the present invention to provide a signal transmission device for an elevator that can improve system expandability and standardize the system, and minimize system downtime in the event of a failure.

In other words, in the signal transmission system for the bus direction, the input/output is distributed in two locations on each floor, inside the two-seater car, above the car, in the elevator-mechanical room, or in the elevator-remote control center (monitoring room or reception). By driving bus lines with terminal devices separated and independent for each system by one or a minimum number of signal transmission host control devices, redundancy is improved by preventing the entire system from going down due to any terminal failure, and the effects of external noise are improved. By electrically insulating the bus line, which is susceptible to external noise, it is possible to reduce the impact of external nozzles on the entire system. Alternatively, with the signal transmission method using the bus method, there is no need to consider restrictions on the number of terminals or distance restrictions on branch bus lines, and it becomes possible to support a flexible system configuration with respect to system expandability and versatility.

Furthermore, in the prior art described above, as shown in FIG. 15, the master signal transmission host 200.degree. The device is large because it is required for each floor 4a to 4a+N.

In addition to the problem of being expensive, as shown in FIG.
01b, the main processor (not shown) in the elevator control unit 1 transfers the common information to the respective masters in step 35 of FIG.
As shown at 0°350', the same process was performed multiple times, which was wasteful.

Therefore, the present invention solves the above problems by improving the transmission processing time, especially the processing time of the main processor in the elevator control device, and reducing the load factor of the main processor. Now provides signal transmission equipment.

[Means to solve the problem]

The above object is to provide a system in which elevator control is divided into a signal transmission host control device and an input/output terminal control device, in which a plurality of transmitting circuits and a plurality of A receiving circuit is provided, and each transmitting/receiving circuit performs signal transmission control of an electrically isolated systematic bus line.

[Effect]

A plurality of transmitter/receiver circuits connected to one host controller for signal transmission are connected to all bus lines, and each transmitter/receiver circuit is connected to all bus lines, except for transmitting common data to all terminal devices. The configuration is such that only the transmitting boat for which a permission signal has been obtained transmits a signal, and similarly, only the receiving boat for which permission has been obtained performs a receiving operation.

Plus, multiple central control devices! ! In a control system having a (host control device), signal transmission control can be performed in parallel on multiple independent common transmission lines (bus lines) or transmission lines, so one common transmission line (first bus line) A plurality of centralized control devices can be connected to the line), and each can perform signal transmission with the same group of distributed control devices at different timings. Furthermore, during the period when there is no transmission with the first transmission line (bus line), the above-mentioned centralized control device performs signal transmission with the distributed control device connected to the second transmission line, thereby improving transmission efficiency. Flexibility can be improved.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 14.

FIG. 1 is a hardware configuration diagram showing an embodiment of a signal transmission host control device of an elevator-signal transmission device according to the present invention. FIG. 1 shows a case where the present invention is applied to an elevator system having service floors from BIF to 3F (however, 3F is omitted).
The elevator control device 1 is connected to a signal transmission host control device 2, and is further connected to a transmitting/receiving circuit 2a and a bus line (
Input/output terminal devices (hereinafter abbreviated as terminals) 4a to 4 installed on each floor or each layer through serial data transmission line) 3a
connected to c. At the same time, it is also connected to a terminal 6° 13 installed inside the cab inside the passenger car through the transmitting/receiving circuit 2b and the bus line 3b.

The signal transmission host control device 2 connects each terminal 48 to 4c, 6
．． 13 one after another to exchange information specific to each floor, such as call buttons and their response lights.

Terminals 4a to 4c serving as floor stations are connected to hall operation panels 5a to 5c.

Then, each terminal 4a to 4c detects whether or not the call button has been pressed, and when polled for the result,
The data is serially transmitted to the signal transmission host control device 2 through the dual-port RAM 301 as shown in the detailed circuit in FIG. transmit information to.

Next, the elevator control device 1 performs a registration process for car calls and hall calls, and in reverse order as described above, each terminal 4a
-4c, and controls the response lights of the hall operation panels 58-5c.

However, if the response light lighting control method described above is used alone, the response light lighting delay will be about 0.1 seconds, giving the user a sense of discomfort. Local control that transmits terminal specification data from the elevator control device 1 to each input/output terminal device corresponding to the button, and drives an output for turning on a response light corresponding to the call button input for a predetermined period on each terminal side. The above-mentioned lighting delay problem is solved by doing this.

As mentioned above, the embodiment shown in FIG. 1 shows the case of an elevator that serves a total of four floors, from the first underground floor (BIF) to the third floor above ground (3F). .

In addition, in this embodiment, the parking switch (
PAK) 16 and an information display DT that can indicate full occupancy, etc.
An indicator 7a whose light source is an LED with a is installed at the top of the elevator hall, and these devices are connected to a BIF input/output terminal device i4a for input/output control.

By the way, the first floor is a lobby with many users. Therefore, we have created an operation panel (hereinafter referred to as port type indicator) 5b that registers the destination floor directly at the platform and also indicates the position of the leading car of the elevator, and a slightly larger lamp type indicator 7.
b and a speaker 15 for audio guidance. Note that the audio reproduction circuit 14 can be omitted if it is incorporated into the small terminal device 4 whose details are shown in FIG.

On the other hand, since the second and third floors are general floors, the information display 8a
Normally, only the heel position and service direction are displayed, so in BIF, Fig. 5 (a)
In the IF, one set of input/output terminals is used for each floor, as shown in FIG. 3(b), but it is also possible to use one set for each second floor. In particular, in general hall call registers connected to elevator group management control equipment,
Since there are fewer signal lines, one set per six floors can be standard.

The transmission path from the elevator signal transmission host control device W2 to the terminals 6 and 13 in the car is connected by a bus 3b including a tail cord. In addition, bus 3 to the stop here
The reason why it is separated from a is to prevent malfunctions due to reflection or the like.

As shown in Fig. 3, the terminal 6 in the car uses a medium-sized terminal device 6 with many input/output points, and is used for car calls and closing buttons (CL).
O8E) (7) Also automatic (AOUT).

It takes in manual and normal (NOMAL) signals as well as signals such as car weight detection and landing level, and drives the in-car indicator 10 installed in the car upper part, including the information display DIO which can also display the time. It has become.

On the other hand, the terminal 13 on the car does not have many interfaces with the outside, as does the medium-sized terminal 6, but it does not have many interfaces with the outside, but it does provide control parameters for outputting opening/closing control commands L4 and brake signals L2 to the door drive device 11. It is necessary to be able to receive a large number of signals from the elevator control device 1.

In this terminal 13, the opening command is on line L1, the signal from the passenger detection device 12 using a photoelectric device or an ultrasonic sensor is on line L5, and the door opening/closing speed and position is on line L3.
This allows the device to not only control input/output circuits but also control door opening/closing, making it a multi-functional terminal.

As a result, data transmission can be performed at low cost, and compared to when the door opening/closing control device is independent, there is no need to separately adjust the specifications that determine the speed and current using Dip-8W, trimmer, etc., and the terminal specifications Data can be converted into data. ■ Elevator - On-site adjustment data can be centrally managed using the control device 1 (no need for readjustment even if the terminal is replaced).

(2) The elevator control device 1 can provide door opening/closing control commands to the door drive device 11 according to the situation through sophisticated judgment.

Benefits such as:

The elevator control device 1 is a group management control device.

Maintenance equipment, monitoring panels, terminal equipment for remote monitoring systems, receiving terminals for information input/registration control systems, etc., and network transmission control equipment i! 17 and a transmission line 18 for bus connection. This makes it easy to set up a group management system.

According to the above explanation, the input/output terminal device with bus type transmission line 4,
By using 6.13, even if the configuration of the elevator control system changes, especially the operation equipment and guidance equipment at the landing, or even if the number of floors increases or decreases, it can be standardized without developing new hardware. The person concerned will understand that it is possible to create a system by combining highly reliable and inexpensive hardware.

FIG. 2 shows a signal transmission host control device 2 connected to the elevator control device 1. Dual Portrum (hereinafter referred to as DP)
It is a hardware configuration diagram of a RAM (abbreviated as RAM) 301 and a transmission/reception port.

In this embodiment, the DPRAM 301 is used to
A CPU (not shown) in the control device 1 and a CPU 207 in the signal transmission host control device 2 are asynchronously coupled via a bus 107.

The CPU 207 in the signal transmission host control device 2 reads the basic specifications and management specifications for signal transmission control stored in the CPU section in the elevator control device 1 from the DPRAM 301, and determines the transmission control form.

Also, at the same time, the bus lines 3a and 3 are
It receives the control information of the terminal connected to b and sends it to the serial communication interface (hereinafter abbreviated as S) 208. Then, the 5I 208 simultaneously outputs data to each terminal device from the transmission output terminal TX to the A transmission circuit 202 and the B transmission circuit 205. Although this figure shows a case where there are two transmitting circuits, A and B, it is also possible to add three or four circuits.

Here, depending on the data content of the signal output from the terminal TX of the 5I 208, the CPU 207 transmits a transmission circuit operation permission signal from the parallel interface (hereinafter abbreviated as PI) 210, and the reception permission signal control circuit (TX, RX control circuit) 304. A transmission circuit 202 or B via
It is given to the transmitting circuit 205. If the data transmitted from the terminal TX is common to the terminals connected to the bus lines 3a and 3b, the TX and RX control circuit 3
04 to A transmitting circuit 202. Permission to transmit a signal is granted to the B transmitting circuit 205, and the bus line 3a.

Data is simultaneously output to 3b. In addition, if the data sent from the terminal TX is, for example, data necessary only for the terminal connected to the bus line 3a, the TX and RX control circuit 304 sends a transmission permission signal to the A transmission circuit 202 as a command from the CPU 207. A transmission prohibition signal is given to the B transmission circuit 205. Therefore, during this period, the bus line 3b is in an empty state.Only during this period, the bus line 3b is in an empty state.
A dependent station) can also perform a selecting sequence on other terminals (dependent stations) to transmit signals between terminals (dependent stations), improving signal transmission efficiency per bus line. be able to.

Further, as shown in FIG. 2, for the signal transmission host control device 2, by separating the transmitting and receiving circuit into two circuits and electrically insulating them like the bus lines 3a and 3b, for example,
If a failure occurs in the terminal connected to the bus line 3a, a failure in the bus driver that short-circuits the bus line, or if the transmission control capability of the terminal becomes disabled and signals are continuously sent from the terminal, the bus Although signal transmission is disabled to the line 3a, the bus line 3b is not affected at all. When the bus lines for the landing system and the car system are configured in the same system, as in the conventional example system, if one terminal at the landing area experiences a failure mode like the one described above, the signal transmission between the cars will also be interrupted. To be damaged,
This could lead to the entire elevator system going down, resulting in an emergency stop of the elevator and even stranding passengers. This approach significantly reduces the redundancy, reliability, and serviceability of the elevator system.

However, in the case where a plurality of bus lines are provided for one signal transmission host control device 2 as in the embodiment of the present invention, even if the hall system bus line 3a goes down, the passenger car system Therefore, at this time, the elevator cannot send or receive information to the hall, so it is not possible to display a hall call indicator, etc.
Since signal transmission between cars is possible, elevator
operation can be maintained.

For example, in response to such a failure mode of the hall-based bus line, it is possible to respond to such a failure mode by implementing a configuration in which the elevators are stopped at each floor, thereby minimizing the deterioration of service to passengers.

Next, if we consider the bus line configuration of the prior art described above from the perspective of transmission waveforms, we will consider the reliability of the transmission waveforms.

The following problem occurs in system scalability.

By adopting this method, all of these problems can be solved.

(A) Hall bus line 3a and car bus line 3b
If both are configured using the same bus line, there will always be a branch point in the transmission path. At this branch point, the characteristic impedance of the transmission line becomes continuous, and a reflected wave is generated relative to the transmitted wave, which causes waveform distortion of the transmitted wave and reduces the reliability of signal transmission.

As in the present invention, by separating the transmitting/receiving circuit and the bus line for one signal transmission host control device circuit, the bus line for the hall system and car system can be separated without leading to a significant increase in cost. , there are no branch points in the transmission path, and highly reliable waveform transmission with little waveform distortion is possible.

Furthermore, according to the present invention, bus lines with different characteristic impedances such as twisted spare cables and coaxial cables can be connected at the same time using one signal transmission host control device.

Wiring can be selected according to the type of terminal device, transmission distance, and wiring environment.

(B) Reducing the influence of noise The influence of extraneous noise is the most inherent problem in signal transmission. This problem cannot be avoided for transmission lines that run over long distances and in diverse environments. Therefore, in signal transmission between the elevator and the control equipment in the machine room, there is no need to worry about unexpected noise being added to the transmission path, but signal transmission between the machine room and the monitoring panel installed in the building monitoring center outside the machine room, etc. In this case, if the transmission line is installed in parallel with a high-voltage power supply line in a duct inside a building, it will be affected by unexpected noise.

When the signal transmission path between the control panels in the machine room and the transmission path between the control panel and the monitoring panel outside the machine room are in the same system and the transmission is controlled by the same signal transmission host control device, 1. When the present invention is applied, the following can be achieved. You can get an effect like this. For example, the bus line 3a in FIG. 1 is used as a signal transmission path in the machine room.
By using b as a signal transmission path with the monitoring panel outside the machine room, the bus line 3a is not affected by the unexpectedly large noise induced on the bus line 3b outside the machine room, and therefore the signal The influence of external noise on transmission can be suppressed as much as possible, and the reliability of the signal transmission system can be improved without being affected by external noise between control panels in the machine room, halls, cars, etc.

(C) System expandability When performing bus-based signal transmission using pulse transformers 1 For example, connecting n pulse transformers to a bus means connecting pulse transformers with a primary inductance of exactly 1/n. It will be the same as what you did. As described above, when the primary inductance decreases, the sag of the rectangular wave signal waveform increases. In this way, in bus systems using pulse transformers, there is a limit to the number of transmission devices that can be connected to the bus.For example, when the transmission speed is about 50 bits/second, several to The limit is considered to be a few people.

Therefore, if one terminal is installed for each floor of the platform on one bus line, only a few terminals can be installed for each floor. Therefore, in an elevator system with more than 10 floors, it is necessary to add a new host control device for transmission of signals and to add another bus line, which leads to a significant increase in cost. However, when the transmitting and receiving circuits are separated into a plurality of systems in one transmission host control device as in the present invention, the number of terminals driven by one transmission host control device becomes twice the number of transmitting and receiving circuits set. Therefore, system expansion can be handled by simply adding a transmission path without adding a new transmission host control device, so that there is no significant cost increase. One specific example of this embodiment is shown in FIG.

In addition, after we have delivered the product to the customer, we receive a request from the customer for additional audio and display guidance to be installed at the hall, and if we wish to add hall terminal equipment, we may need to rework it, such as extending the transmission line that has been wired. (This will reduce the reliability of the transmission line.) Or add a new host control device for the signal transmission line, and
System bus lines will be laid out.

However, when the present invention is applied, system expansion can be easily accommodated in the same way as described above.

Furthermore, by providing a plurality of transmitting/receiving circuits in one signal transmission host control device as in the present invention, a signal received at an arbitrary receiving port can be transmitted from another transmitting port, thereby becoming a repeater in signal transmission. It can also be used as This allows it to be used as a signal amplifier in long-distance transmission or as a converter for transmission lines with different characteristic impedances.

(D) Improving transmission processing time In the configuration shown in FIG. 6 (in order to simplify the explanation, the case is shown in which the sending/receiving port 2c is not connected), first, the shared memory 301 has the configuration shown in FIG. Such information is stored by the main processor within the elevator control unit 1.

That is, the information area 330 common to the car and each floor
(car position, etc.), information area 331 regarding the car
and information areas 332 to 33 for each floor from the 1st floor to the Nth floor
2+N, and the microcomputer 2M of the signal transmission device 200 in FIG. 6 reads out the information in these information areas, converts it into the serial transmission signal 3T in FIG. 8, and outputs it. This transmission signal 3T is transmitted to the transmission line 3 via the transmission/reception circuits 2a and 2b.
A and 3b are output simultaneously.

On the other hand, the car terminal 600 or the floor terminals 4a to 4a+N
The information transmitted from the transmitting/receiving circuit 2a or the transmitting/receiving circuit 2b is input to the microcomputer 2M as a received signal 3R via the transmission path 3a or 3b.

The relationship between these series of transmitted and received signals will be explained with reference to FIG. First, in period To, when the signal transmission device 200 outputs information common to the car and each floor, the car terminal 600 and each floor terminal 4a to 4a+N transmit this information to the transmission path 3a or the transmission path 3b, respectively. Receive via. Next, in period T1, the signal transmission device 200
When the information regarding the car is output from the car terminal 600, the car terminal 600 receives this and outputs the car information (car and call information, etc.) to the transmission line 3b during the period Tz as a response. During this period, since there is no signal on the transmission line 3a, each floor terminal 48 to 4a+N performs independent work such as input/output processing. Subsequently, when the information for the first floor is output from the signal transmission host control device 2 in period T3, the floor terminal 4a on the first floor receives this and transmits the information for the first floor in period T8 as a response. It outputs to path 3a. Afterwards, transmission and reception are repeated in the same manner up to the Nth floor, but each floor terminal 4
During the response period (T4...TM) from a to 4a+N, there is no signal on the transmission line 3b, so the first car terminal performs its own work such as input/output processing. The signal transmission host control device 2 thereafter repeats transmission and reception of T o ''TM.

FIG. 9 shows the elevator control system [
This is a process required by the main processor in L. That is, in step 390, information common to each vehicle and each floor is stored in the information area 330 of the shared memory 301, and in step 3
At step 91, information regarding the car is stored in the information area 331 of the shared memory 301, and information received from the car terminal is read from the same area, similarly at step 392.
The information on each floor is stored in the information areas 332 to 332+N, and the information received from the terminals on each floor is read from the same areas.

According to this embodiment, the main processor of the elevator control device 1 only needs to store information common to the passenger and each floor terminal in one shared memory, which reduces the amount of processing and makes the device more compact. is measured.

FIG. 10 is a diagram showing the system configuration of one embodiment of the present invention, in which a group management system for three elevators having service floors from 81st to 8th floors (in this figure, service floors 1 to 4F) is used.
This figure shows a case where the present invention is applied to a building (the other floors are omitted). In FIG. 10, the group management host microcomputer IG built in the operation system group management control device 10M is connected to the group management I10 transmission control device i! M17H1
Input/output terminal devices (hereinafter referred to as terminals) 401 to 4C3, 4dl to 4d3 and buses (common data transmission paths) 3b1 to 3b3, which are connected to ~M17H3 and interface with floor installed equipment for two floors. It is connected. Further, a network transmission control device M17C1 having two transmitting and receiving circuits for one transmission control device is connected to the group management host microcomputer IG, and the group management control device 10S of the intelligent processing system (standby system) is connected to the group management host microcomputer IG. Network transmission control bag [517C1, control bag for each unit! ! 10 a 1-1
Network transmission control bag for 0a3 too! ! 17 a 1~
17a3 is incorporated. a of these transmission devices,
b. The two transmitting/receiving circuits and the maintenance terminal device 10 shown in FIG. Transmission circuits a and b of the built-in transmission device 17U1゜17H1
are bus-connected through transmission lines L17a and L17b, which are wired in a double system.

In addition, in FIG. 10, a group management control device 1 consisting of two systems is shown.
The transmission control devices M17G2, 517C2゜17H3 connect between the 0S and IOM and the maintenance terminal device 10H via the bus line LIOG, and the status of group management control or learning and acquired knowledge data of the group management control devices 10M and IO3 is established. Alternatively, it performs an elevator operation survey and communicates group management control data between the two systems.

Further, the group management control device 10s is a group management control device 10M.
It has the same configuration as the group management host microcomputer IS, the network transmission control device 317C1, and the group management data transmission device 8.
17C2 and group management equipment 10 transmission control device 817 H1
~517H3 are connected to buses 3bl~3b3 via bus lines L17H1~L17H3, and have functions such as backup for the group management control device 10M. These backup operations can be automatically switched based on the self-diagnosis results of the microcomputer IG and the failure diagnosis results from the hardware circuit. On the other hand, each unit control device 1
0a1 to 10a3 are network transmission control devices 17a1 to 17a3 each having two transmission/reception circuits for each machine microcomputer lal to 1a3 and one transmission control device connected thereto.
17a3 and elevator I10 transmission control device 2al~
It consists of 2a3. In addition, I10 for elevators
The transmission control devices 2a1 to 2a3 are connected to the buses 3b 1 to 3b.
Each elevator via 3-terminals 4cl to 4 on each floor for each
Connect to c3, 4dl to 4d3. Furthermore, bus 3al~
As shown in FIG. 1, it is connected to a terminal installed in the driver's panel or the like via 3a3.

The three elevators with the above configuration - the unit control device 10al and the group management control device 10M in the group management system
The control data transmission between them will be explained with reference to the time chart of FIG.

Elevator - Worker/○ Transmission control device 2al is bus 3a
Data is periodically and sequentially sent and received to and from the terminals 4cl and 4dl and the car's own terminal via the terminals 1 and 3bl using a polling selection method.

At that time, the I10 for the elevator shown in Fig. 10 is installed on the hall side.
From the transmission control device 2al to the terminal 4cl via the bus 3bl
, Hall lanterns 8al, 8bl connected to 4dl,
8cl, 8dl lighting control signal and chime (not shown)
Control signals such as the following are sent out from the terminals 4cl and 4dl, and the hall operation panels (hereinafter referred to as hall buttons) 5al, 5bl, and 5cl are connected to the terminals 4cl and 4dl in the reverse order as described above.
The input signal of y5dl is sent to the machine microcomputer via the DPRAM of the elevator I10 transmission control device 2al.

At the same time, the group management equipment/○transmission control device M17H1 of the group management control device 10M has a terminal 4cl on the bus 3bl,
Hall buttons 5al, 5bl, 5cl sent from 4dl
, 5dl is received in the form of eavesdropping, and this signal is input to the host microcomputer IG, where hall button registration processing is performed. As a result, the host microcomputer IG returns an output signal (response lamp lighting signal) to the group management I10 transmission control device M17H1 and the hall buttons 5a1, 5bl, and 5cl. In addition, the host microcomputer IG sends service floor assignment information to the three elevators from the network transmission control device M17C:1 to the network transmission control device M17C:1 of each car control device 10a1 to 10a3 via the bus L17a. Send to 17a3.

As shown in time chart L3a in FIG. 11(c),
During the transmission period from each floor terminal, signals are not sent to the elevator I10 transmission control system [72a1] and bus 3al, which is unopened at the inner end of the car, so bus 3al is in an empty state, but when the The data is also provided to the transmission line of the car, allowing the same guidance as in the hall to be displayed on the in-car display and the guidance to the stop floor using the hall call button.

Next, since the elevator I10 transmission control device 2al transmits and receives data to and from the car's own terminal via the bus 3al in the same manner as on the hall side, this time period tZc is
Contrary to the above, the bus 3bl becomes vacant. This bus 3
Group management control device during the time when BL is free! Hall buttons 5 a 1, 5 b 1, 5 are call input signals learned through the DPRAM of the transmission control device M 17 Hl before the 10M or 10S host microcomputer IG or IS.
c Transmit the official response command output signal for 1,5dl (for example, response light blinking lighting signal or notification command code of [Service not available]) from the control device M17H1 to the terminal 4.
cl, 4dl via bus 3bl.

As a result, the bus 3bl can be used efficiently for the time tMH, thereby shortening the time per cycle required for the elevator elevator 10 transmission control device 2al to perform polling selection with the terminals 4cl, 4dl and the car's own terminal. be able to. As a result, when operating the hall button,
To quickly control the lighting of a response light of a hall button without making a user feel a delay in response time.

In addition, in the embodiment, one set of terminals 4c and 4d is installed on the second floor, but compared to the case where one terminal is not provided for each floor, this is because the elevator I10 transmission control device 2al is connected to the car terminal and The time required per cycle for polling selection with the hall terminal can be reduced by an amount equivalent to 1/2 of the time tZH. Furthermore, when one set of terminals is installed on each floor from the 3rd to the 6th floor and applied to a high-floor elevator, the above method prevents the data communication between the elevator I10 transmission control device and the terminal from increasing in time and speeds up the data communication. There is an effect that it can be done.

In the above bus configuration, the bus L17a includes the group management control device 10M, IOS, and the machine control devices 10a1 to 10a.
Elevator operation control data is transmitted and received between the transmission and reception circuits of the network transmission devices built in each of 3, and on the bus L17b, the maintenance terminal device 10H and UCBIOU, the group management control device 10M, IOS, and the machine control device 10 are transmitted and received.
Information data (maintenance data, display data, etc.) is transmitted and received using another transmitting/receiving circuit built in the same network transmission control device as described above in a1 to 10a3.

As shown in the time chart L17a (control system data transmission) and L17b (information system data transmission) in FIG. device 10
H. Even if an abnormality occurs in the UCBIOU or erroneous information sheet data is sent onto the bus, the elevator operation control device is not affected.

In addition, the bus L1 for transmitting and receiving elevator operation control data
When a failure such as a wire breakage occurs in 7a, elevator operation control can be continued by sending elevator operation control data onto the information system bus L17b. However, in this case, the transmission right is not transferred to the UCBIOU and the maintenance terminal device 10H, but only monitoring (examination) is performed.

Furthermore, in this system configuration, the group management control unit [1!10M and its backup function, etc.] controls the response light lighting of hall buttons (5a1, etc.) and controls elevator service floor assignment for generated hall calls. If an abnormality occurs in both of the group management control devices 10S and the elevator operation control data is no longer sent to the machine control device (10a1, etc.),
The abnormality is detected by the machine microcomputer (LAL, etc.) in
Controls the lighting of response lights for hall buttons (581, etc.).

At the same time, the machine microcomputer (1a1, etc.) transmits the input information of the hall button (5a1, etc.) to the network transmission control device (
17a 1, etc.) on the bus L17a and transmitted to other machines. As a result, the group management control device 10M, I
It is possible to minimize the deterioration of elevator service in response to the occurrence of an abnormality in O8.

As described above, according to the present system configuration, (a) input/output control of the hall buttons (581, etc.) can be speeded up.

(b) By installing one set of terminals (401, etc.) on the 2nd to 6th floors, it becomes easier to accommodate higher floor elevators.

(c) Elevator - It is possible to improve the backup function against abnormalities in equipment related to operation control.

Effects such as this can be obtained.

Next, a case where the signal transmission device of the present invention is applied to a two-elevator management system (hereinafter abbreviated as Duplex) will be described using FIG. 12.

The elevator control microcontroller units 1al and la2 installed in the Isao Unit 1 and NcZ unit control panels are the parts that have the unit control function, the hall call assignment control of the Duplex elevator, distributed standby control management operation control, and pattern operation. It consists of a management control section that has the function of controlling the two elevators in association with each other. As mentioned above, the control functions of each machine are exactly the same in terms of hardware and software, and the management control function is distributed to each machine control device.

In the Duplex elevator having the above configuration, the communication ports 200al of the car control panels 10al and 10a2.

200a2, 200bl, and 200b2 have a configuration in which one signal transmission host control device according to the present invention has a plurality of transmitting/receiving circuits, and each includes a control microcomputer section 1al,
o F1a11a1 communication port 2 connected to 1a2
00al is a terminal installed in the car (not shown)
Terminal 5 installed in the hall and bus line 3cl connecting
al, 5bl and Na Z unit control unit @L Oa 2
A bus line 3el connecting the communication ports 200+)2 is connected. Furthermore, the communication port 200al is equipped with I1 for medium-rise odd-numbered floors, which is applied when the number of floors increases.
0 bus line 3cl and I10 bus line 3dl for high-rise odd-numbered floors can be connected.In this case, an expansion communication port 2b is installed and the 1 communication port 200a3 is connected to the middle-rise even-numbered floor I10 bus line 3c2a. , communication port 200
A4 corresponds to the I10 bus line 3d2a for high-rise even-numbered floors to which it can be connected.

The communication port 200a2 also has a bus line L that connects the communication port 200b2 of the control device 10a2 of the Nα2 machine.
Terminal 5a2 installed in the hall of No. 17 and Nα2,
A bus line 3a5 connecting 5b2 is connected. N1
Communication port 200bl of Unit 12.

200b2 is also connected to the bus line in the same way as the NQI machine.

In the Duplex elevator configured as described above, data transmission processing is performed at the timing shown in FIG. 13. Also, as mentioned above, Na3.

Although the control device of Nα No. 2 has the same management control function, in this explanation, it is assumed that the control device of Shai No. 1 shares the management control function.

In this configuration, bus line L for communication between each machine
17, the communication port 200a2 of the Nα1 car becomes the control station, and when communicating with the terminals installed in the 1st car and each hall, the communication port 200al of the Nα1 car and the communication port 200bl of the Isao No.2 car are controlled. It becomes a station.

The signal transmission host controllers, which are these control stations, exchange data with each terminal through the respective bus lines using a polling selection method.

First, a synchronization signal (13th
81) shown in the figure is sent out, the communication port 20
A hauling thefting sequence is executed from the Pal of 0al to the car terminal (not shown) through the bus line 3cl.

At this time, the transmission port is cut off so that no signal is sent to the bus line 3a4. At the same time, NIIL receives synchronization signal S1 to start communication with the car terminal.
Elevator No. 2 - control microcomputer section 1a2 is also Nα1
Similarly to the car No. 1, the hauling thefting sequence is executed with the car terminal (not shown). Similarly, at this time, the transmission port is cut off so that no signal is sent to the bus line 3a5. During this period, Pa6 of the communication port 200a2 of the Nn1 machine sends a synchronization signal S1 to start communication, and then sends commands related to the running control of the 1llIl12 machine, and the communication port 200 of the Nα2 machine receives the instructions.
From Pb6 of b2, signals such as the first position in the elevator driving direction and finally a communication end signal for the car are sent back to Pa6 of communication port 200a2 of Nα1 car.

And Ha has elevator operation management control function.
When the elevator control microcomputer unit 1al of the No. 1 elevator detects that Pal of the communication port 200al and Pa6 of the communication port 200a2 have completed the above-mentioned predetermined communication, it advances to the next sequence.

Then, in the next period, when the communication start synchronization signal S2 with each terminal installed in the hall is sent from the communication port Pa6 of the communication port 200a2 of the Nα 1 machine in the same way as above, the communication ports 200a 1 and 200a2 of each machine Each terminal functions as a control station and executes a hauling selecting sequence in order to exchange data from each hall terminal. At this time, Pa5 of the communication port 200a2 of the Nα1 machine receives the push button input signal sent from the hall terminal (5a2, 5b2, etc.) of the NCL machine No. 2 from the bus line 3a5 to the communication port Pb3 of the communication port 200b1 in the form of eavesdropping. There is. In this way, by configuring the bus line 3a5 connected to the hall of No. 2 car No. 1 to be connected to the hall of No. 1 car, the hall push button input information of No. 2 car can be duplicated.
The microcomputer section 1al of the Nα1 machine control device having the management control function of the x elevator can be obtained immediately. However, bus line 3a5 is connected to communication port 20 of Nα1 machine.
If it is not connected to 0a2, the hall push button information is first input to the communication port 20ob1 of the Nα2 machine, and then the operation control microcomputer section 1a2 reads this information and sends it to the communication port 200b2. The communication port 200b2 that received the signal sends the signal to the communication port 200a2 of the Nα1 machine through the bus line L17.

Finally, the operation control microcomputer lal of the Nα1 machine receives this information.

Therefore, by adopting this method in the Duplex elevator, the operation control microcomputer section with the management control function of No. Management control can be performed quickly and accurately, and the serviceability of the elevator can be improved.

For one communication control microcomputer according to the present invention.

By applying a configuration in which a plurality of transmitting/receiving ports are provided, a convenient configuration can be obtained without increasing the scale and complexity of the Duplex elevator system, and without increasing costs. However, if this configuration is not adopted, each machine will require four communication ports and four microcomputers for controlling this communication, but by applying the present invention, the number of microcomputers for communication control can be reduced. This means that the bus lines can be used effectively and efficiently without significantly increasing the number of bus lines.

In addition, by constructing a Duplex elevator system like a single-unit configuration, even if the power to NL12 is cut off or the control equipment malfunctions, Nα2
The hall terminal of the machine is connected to Nα1 through bus line 3d2.
Since it is connected to the communication port of the No. 1 car, even if a passenger operates the push button of the Ha Z car, the information can be transferred to the control microcomputer section of the &1 car.

Therefore, there is an advantage that it is possible to respond to a power cut-off or failure of the control device of the &2 machine without degrading the serviceability of the elevator.

〔Effect of the invention〕

According to the present invention described above, the reliability of the system is improved compared to the signal transmission method using a bus line.

Flexible support for expandability and versatility can be achieved at low cost. That is, a plurality of transmission circuits and reception circuits are provided for one signal host control device of an elevator control system, and signal transmission control is performed using a separate bus line with each transmission and reception circuit electrically insulated. By doing so, the following effects can be obtained.

By electrically insulating and separating the car system and hall system bus lines for one signal transmission host control device, the reliability and versatility of the system can be improved without a large increase in cost.

In addition, group control elevators and Duplex elevators
In this case, it is possible to effectively utilize bus lines without significantly increasing the number of signal transmission host control devices, so it is possible to support large-scale systems without significantly increasing costs. The effect of this can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a hardware configuration diagram showing an embodiment of a signal transmission host control device of an elevator signal transmission device of the present invention, and FIG. 2 is a signal transmission host connected to the elevator control device of FIG. A hardware configuration diagram showing an embodiment of the control device, a dual port RAM, and a transmitting/receiving port. Figures 3 and 4 are configuration diagrams each showing an embodiment of the input/output terminal device in Figure 1. Figure 5 is a diagram showing an embodiment of the input/output terminal device in Figure 1. 6 is a diagram showing an example of the application of the present invention to a high-dark elevator, and FIGS. 7, 8, and 9 are explanations of operation, respectively. Fig. 10 is a system configuration diagram of a group control elevator to which the present invention is applied, Fig. 11 is a time chart in signal transmission, and Fig. 12 is a Dupl to which the present invention is applied.
A system configuration diagram of an ex elevator, FIG. 13 is a time chart for signal transmission, and FIG. 14 is a diagram showing a transmission line in which the transmission circuit of the transmission device incorporated in the multi-function interface terminal device is wired in a multiplex system. FIG. 15 is a configuration diagram showing a conventional example, and FIGS. 16 and 17 are operation explanatory diagrams of the conventional example. DESCRIPTION OF SYMBOLS 1... Elevator control device, 2... Host control device for signal transmission, 2a, 2b... Transmission/reception circuit, 3a. 3b... bus line (signal transmission line), 4a to 4c...
- Floor input/output terminal equipment, 58-5c...Hall operation panel. 6... In-car input/output terminal device, 11... Door drive device, 12... Passenger detection device, 13... Car ball input/output terminal device, 200... Signal transmission device, 202, 20
5... Transmission circuit, 203, 206... Receiving circuit, 3
01...DPRAM, 304...Transmission, reception permission signal receiving circuit, IG, Is...Group management host microcomputer,
10M. 10S... Group management control device, 10al to 10a3...
・Each unit control device, lal~1a3...Each unit microcomputer, 2a1~2a3...I10 transmission for elevator'
:, A-5 Ko---Ho, 17 yen, 114 sheep diagram (B No. 8 diagram (b)) No. q mouth @1st! Cha Tinter Hiroboo--Gukoichi 4th tree

Claims (1)

[Scope of Claims] 1. In a system in which elevator control is divided into a signal transmission host control device and an input/output terminal device, a plurality of transmitting circuits and a plurality of transmitting circuits are provided for one signal transmission host control device. 1. A signal transmission device for an elevator, characterized in that a plurality of receiving circuits are provided, and each of the transmitting and receiving circuits performs signal transmission control of an electrically isolated systematic bus line. 2. The elevator signal transmission device according to claim 1, wherein the plurality of transmitting circuits are configured so that the same signal can be transmitted at once by a centralized control device. 3. The plurality of transmitting circuits transmit data only from the transmitting circuit designated by the central control device, and do not transmit data to transmission lines connected to other transmitting circuits whose transmission is cut during this period. 2. The elevator signal transmission device according to claim 1, wherein data transmission permission is granted only between the input/output terminal devices connected to the transmission path. 4. The plurality of receiving circuits are configured to receive data only from transmission lines connected to the receiving circuits specified by a receiving port control signal from a central control device. Elevator signal transmission device. 5. The elevator according to claim 1, wherein at least one set of transmitting/receiving circuits among the plurality of transmitting/receiving circuits transmits/receives information regarding the car, and another set of transmitting/receiving circuits transmits/receives information regarding the hall. signal transmission equipment. 6. The elevator control system is used to switch the operation and control of elevators installed at floor entrances and exits, cars, elevators, building supervisor rooms, and front desks, and various displays and displays.
An elevator control system comprising a functionally distributed control device that controls each device that performs guidance, and one or more centralized control devices that perform data transmission control with these devices and control the operation and guidance of the elevator. , a plurality of transmitting circuits and receiving circuits are connected in parallel to one signal transmission device connected to the central control device, and a plurality of transmitting circuits and receiving circuits are provided, electrically insulating and separating the central control device and the function distributed control device. A signal transmission device for an elevator, characterized in that it is formed of multiple transmission lines, thereby shortening the length of the transmission line and preventing the entire elevator system from going down.