JPS62218375A - Group controller 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] [Objective of the invention] (Industrial application field) The present invention is capable of coping with peak demand even in the transmission system connecting the group control device and the group control device and each unit control device. This invention relates to a group management control device for elevators.

(Prior art) With the advent of microcomputers, elevators! !
i-control devices have undergone major changes. In other words, conventional elevator control devices used many relay control circuits, so as the elevator capacity increases, the number of relays increases. There were many things I didn't like. However, by introducing a microcomputer, which is characterized by its small size and high performance, into the elevator control system, the above problems have not only been solved, but also the design and development of control functions has been made easier. As a result, he has made significant contributions, including the diversification and diversification of elevator control.

Microcomputers are used in elevator control equipment,
It is used in a number of elevator control devices that exclusively control elevators and group management devices that comprehensively manage multiple elevators. The above-mentioned group control device is a system that is used to respond to hall calls from the halls of each floor in order to improve elevator operating efficiency and improve service to elevator users when multiple elevators are installed in parallel. A microcomputer is used to rationally and quickly select the most suitable elevator to respond to a hall call, and to quickly assign the elevator to respond to the hall call.Hall call assignment control and control during fires, earthquakes, etc. It performs operational control and dispatch control that promotes improved service when dispatched.

An elevator system using such a group management device conventionally has a configuration as shown in FIG. In the figure, H is a hall-call registration device that registers hall call signals, G is a group management device that performs group management as described above, and C1 to C.
Reference numeral 8 represents a machine control device that controls each individual elevator.

In the system shown in FIG. 8, when a hall call is generated by pressing a hall button on a certain floor, this hall call is registered in the hall call registration device H. A newly generated hall call is input from the hall call registration device MH to the group management device G, and the microcomputer in the group management device G records, for example, the car position and car call registration status of each car.

The optimal elevator that can arrive at the floor of the new hall call in the shortest time is selected, taking into account the operating conditions and other factors. Then, an allocation output is performed to the selected elevator car control device, and registration for the hall call is performed. Based on this registration, the car control device provides service in response to the floor where the hall call has occurred.

(Problem to be solved by the invention) By the way, an important function of elevator group management control is the traffic demand in the building, which is the demand during morning work.

There are services for demand during lunch time, demand when leaving work when returning home, demand during normal times in the morning and afternoon, demand during off-peak hours at night, etc. This service detects what type of demand is based on clock conditions and car load conditions, and performs elevator operation appropriate for each demand.

For example, in the case of demand at work, standard floor withdrawal, advance designation,
Departure interval control is implemented to improve transportation capacity on the standard floor compared to other floors, and during the latter half of the lunch period,
In order to increase the transportation capacity on the dining room floor, controls are being implemented such as forcibly stopping two or more elevators on the dining floor.

In such group management, the group management control [l has a system clock in the device, determines peak demand (e.g. demand at work and demand at lunch time, etc.) based on clock conditions and car load conditions, and then Since the group control device G issues commands to each unit control device C1, to C8 to carry out group control control operations that meet the demand, the communication between the group control device or the group control device G and each unit control device C1, to C8 is If the transmission equipment between them breaks down, each unit control unit C1, to C8 will have a peak demand determination function (for example, a clock and a simple group management function in each unit control unit).
Because there was no system, each unit was unable to operate its elevators in accordance with peak demand.

Therefore, the purpose of this invention is to determine the peak in each unit control device even when the main group control device or the transmission system connecting the group control device and each unit control device fails, and to perform peak operation suitable for the peak demand. An object of the present invention is to provide an elevator group management control device that can perform the following operations.

[Structure of the Invention] (Means for Solving the Problems) That is, in order to achieve the above object, the present invention puts a plurality of elevators into service for a plurality of floors, and each elevator is provided with a single elevator. In addition to installing and controlling a machine control device that performs υ control, a predetermined evaluation calculation related to the time required for each elevator to respond to a hall call that occurs is performed, the optimal elevator is selected, and the elevator is In an elevator group management control device that performs group management control by providing a group management device that assigns and responds to the corresponding front symbol machine control device,
Each of the unit control devices has a clock circuit that obtains time information and monitors abnormalities in the control by the group control device, and when an abnormality is found, it is checked based on the time information of this clock circuit whether or not it is within a predetermined traffic demand time. , a special operation function has been added that allows the vehicle to operate in a preset driving mode corresponding to the specified traffic demand period, and to operate in response to calls outside of the specified traffic demand period. Configure.

(Operation) In this configuration, the m@'II on each unit side monitors the control by the group management device, and as long as the group management control can be executed without any abnormality, the group management control is performed under the group management device. Ru. However, once an abnormality is detected, each unit control device
It checks whether or not it is a predetermined traffic demand time according to the output of the built-in clock circuit, and if it is a predetermined traffic demand time, it starts driving in a preset driving mode, and then responds to a new hall call. I will serve you. Furthermore, if the vehicle is out of the predetermined traffic demand time period, so-called selective collective operation is performed in which service is provided in response to the occurrence of a call. This makes it possible to provide services that meet traffic demand even if group management control becomes unavailable during times of traffic demand, and it is possible to avoid service disruptions caused by the inability to manage groups, which was the case in the past, and to improve reliability and service. .

(Example) The present invention provides a clock circuit and a simple group management control function, which is a special operation function, in each unit control unit, so that when group management is impossible, each unit control device can handle peak operation demand. Peak operation demand here refers to cases where elevator demand is especially large, such as JWF1 operation and lunchtime operation), and special operation that matches peak demand is implemented.
This makes it possible to realize an elevator group management control device that prevents extreme deterioration of liver function even in abnormal situations.

Specifically, even when the group control device fails or the serial transmission device between the group control device and each unit control device breaks down, the clock circuit and simple group control function in each unit control device allow each unit control device to Detects peak demand (data on the start and end time periods during dispatch and lunch are set in ROM (read-only memory) and determined only by the clock. At that time, the clock is not ONL on Sundays), Out! For J hour demand, standard floor pullback operation, advance designation (doors are opened on the standard floor and hall lanterns are flickered to guide passengers), departure interval control (if there are more than a certain number of passengers, the departure time is shorten the number of passengers, and depart immediately when the train is full) for each aircraft.
If it is lunch time, the load will be within a certain value (
For example, if the load is below 60% (a value that still allows a considerable number of people to board the train), control will be implemented to forcibly stop the cafeteria floor regardless of whether or not there is a hall call. To detect peak demand for each unit control device and to perform simple peak operation even in an abnormal situation such as failure of a serial transmission device between control functions to suppress decline in liver function.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.

FIG. 1 is a block diagram showing the configuration of this device.

In the figure, 1A and 1H are machine control devices for controlling each elevator provided corresponding to each of elevators A @ machine to H, and each machine control device! IA,
~1H includes a microcomputer for controlling each elevator (under 12, the microcomputer is simply referred to as a microcomputer) 4A, ~4H, a clock circuit (8181:1) that provides time information necessary for group control. 1 second can be read a) 7A, ~7H1 Serial transmission interface circuit 3A that controls data transmission between machine control microcomputers 4A, ~4H in each elevator @ machine control device.

~ 3H, and low-speed serial transmission interface circuit 8
A, ~8H, 9A, ~9H are provided, and are composed of these. Furthermore, the above symbol machine control microcomputer 4A, ~
4H each has a unit control function S and an auxiliary group control 111 function G.
, high-speed serial transmission control section 3A.

~ Control WJ function for 3H, low speed serial transmission section 8A.

It has a control function for ~8H.

In addition, each machine control device IA is connected by a high-speed serial transmission bus 2 (hereinafter referred to as SS bus) for data transmission for up to one day. 10 is a hall call registration device, and this hall call registration device @10 includes a low-speed serial transmission bus 13 (hereinafter referred to as LS bus), the same interface circuit 8I, each machine control device IA, and an interface circuit for the LS bus in 1H. 8A.

The registered hall call information is read into each car control device IA and ~1H via ~8H.

Here, the above-mentioned auxiliary group system m+i function G is group management@
Equipment failure group management device and each unit control device 1A, ~ 1H
This is a special operation mode execution function for peak demand services that is activated when group management cannot be performed due to a failure of the LS bus 13 or SS bus 2 that connects the bus.

In this mode, time information is read from the clock circuits 7A and 7H corresponding to each car. For example, if the time is morning dispatch time, the car is moved to the standard floor, and after giving a command to open the door for a predetermined time, The car operates to service the floor where the car is called, and also performs preset special operations such as forcing a stop on the dining room floor during the lunch hour.

In addition, such special operations are not performed during normal hours, and so-called selective collective operations are performed in which each hall call or car call is responded to on an as-needed basis.

11A, ~IIH are car call registration devices for registering destination floors, and these car call registration devices 11A, ~1
1H is installed in each elevator car and has a floor button that commands the destination floor. By pressing this floor button, the information of the pressed floor button is transferred to the LS bus. Interface circuits 8J to 8Q, corresponding machine control device 1
The LS bus interface circuits 9A, 9H, and 18 provided in A and 1H are read into the corresponding machine control devices IA and 1H via the buses 13.

Next, referring to Fig. 2, the number 1 control microcomputer 6A, ~6H1, high-speed serial transmission interface circuit (SS10) 3A, ~3H, and low-speed serial transmission interface circuit (LSIO1) 8A, 8H in the machine control device are shown in Fig. 2. will be explained in more detail.

As shown in the block diagram of Figure 2, the microcomputer 6 for machine control
A (~6H) is a CPU (central processing unit; processor) 17 that controls various arithmetic operations according to programs, a random access memory (hereinafter referred to as RAM) 20 that is used for storing program work areas and data, etc. It consists of a storage and read-only memory (ROM 21), which are connected to a system bus 23.

In addition, high-speed serial interface circuit (SSIO) 3A
(~3H), H that performs high-speed data link
DLC controller (commercially available high-speed data link controller) 18, traffic controller for high-speed transmission control (for high-speed serial transmission bus control)
19 is also connected to the system bus 23 of the microcomputer for controlling the previous symbol machine, and at the same time, several control signals (mainly command commands and interrupt signals) are transmitted between the CPU 17 for controlling the machine and the HDLC controller 18, and between the HDLC controller 18 and the traffic controller (This is a method often used in normal serial transmission, so it will not be particularly explained here) and is connected to a high-speed transmission bus (SS bus) 2 via a bus driver and a bus receiver.

Also, low-speed series interface circuit (LS rOl)
8 is a CPLJ24 for low-speed serial transmission, and a serial communication unit (
SCU) 25, an input buffer 28 that temporarily stores input data from a low-speed serial transmission bus, an output buffer 29 that temporarily stores and outputs output data, a RAM 30 used for a program work area, data storage, etc., and a transmission program. It consists of a stored ROM 31, which is connected to an LS bus (system bus for low-speed serial transmission) 32 (different from the system bus 23 in the machine control microcomputer) and at the same time, the serial communication unit 2.
5 is connected to the low-speed serial transmission bus 13 via a line driver 26 and a line receiver 27.

The above configuration constitutes one control device.

Further, in FIG. 1, 12 is the machine control device IA.

It is a group management device that performs group control for ~1H, and has a group control microcomputer 4G, a clock circuit 7G, a high-speed serial transmission circuit 3G, and a low-speed serial transmission circuit 8G, and has each machine number control unit 1.
A, to 1H are connected by an 8-speed serial transmission bus 2 and a low-speed serial transmission bus 13.

FIG. 3 shows a transmission flowchart on the main station side (group management device 12) of the LSI01.

The effect will be explained.

In FIG. 3, when the program is started, the main station sets the first address assigned to the hole in the counter connected to the LS bus 13 (ST1).
, and outputs the address to the transmission line (ST2).

Next, check whether the signal is an output or an input (ST3), and if it is an output, output the data to the transmission line (5T4), if it is an input, input the data from the transmission line (5T5). Check whether each remote station (other than the main station) connected to the last address has been completed.

As a result, if it is not the final address, the process moves to ST7, where the address counter is incremented by one, and the process returns to symbol x 2 and the same process is repeated cyclically thereafter. If it is the final address, return to symbol x1 and S
Repeat the procedure from T1.

Figure 4 shows the remote station (machine controller IA, ~
1H side). To explain the operation according to the diagram, first, the remote station
1, the address is input from the signal line. Then 5T
22, checks whether the data is sent to itself or not using this address data, and if it is an address other than itself, returns to symbol Y1, and if it is its own address, it returns to 5T23.
to go into. Here, it is checked whether it is an output or not, and if it is an output, it enters 5T24 and outputs the data to the transmission line. Further, if it is determined that the input has occurred in 5T23, data is input from the transmission line and the process returns to symbol Y1. Thereafter, this process is repeated cyclically.

Next, flowcharts of the high-speed serial transmission line are shown in FIGS. 5 and 6.

FIG. 5 is a transmission flowchart when outputting 5SI03A, -3H, and 3GM. When this is executed, for example, by a command from the group control device 12, the system first enters 5T31, and finally, 5SI03A.

~ Each station of 3H and 3GM sets the mode for simultaneous broadcast communication. Here, the simultaneous broadcast communication is a method of transmitting data from one station to all other stations. In this embodiment, when a data transmission command is issued from the group control bag [12] , car call information, hall call information, 1 allocation information, and other information transmission commands), all other stations connected to SS bus 2 (control devices for each elevator from elevator A to elevator H)
Each receives an interrupt, then enters 5T32 and judges whether it is its turn to output data or not.As a result of that judgment, if it is not its turn, it returns to symbol z1, and when it is its turn to output data, it returns to symbol z1. Proceed to symbol Z2.

Then, it enters 5T33 and outputs the transmission data here,
Next, the program enters 5T34 and checks whether data output has ended normally. As a result, if it ends normally, it returns to symbol z1, and if it ends abnormally for some reason, it returns to symbol z2.
Go back and retransmit the data. (In this flowchart, the number of data transmissions at the time of abnormal termination is not directly related to the present invention, so it will not be particularly illustrated or explained.)

FIG. 6 is a flowchart at the time of data input of each station 5SI03A to 31-1.3GM. That is,
Each station checks whether the data currently being output to the SS bus 2 is the data it should take (this is automatically detected by the traffic controller 19 in Figure 2). If the data is stored in the RAM, if not, the process returns to symbol z3 without doing anything, and the same process is repeated thereafter.

In this way, this device has a built-in microcomputer with group control auxiliary function in each unit control unit IA and ~1H, and each unit control unit is provided with a communication means, and normally performs group control. The device 12 is made to function as a main station, and the main station periodically sends and receives information necessary for group control by broadcast communication to each unit control device that becomes a remote station, and each remote station transmits the respective information. Transmit to main station.

In this way, information necessary for group control is exchanged between each station.

In the present invention ia, normally, under the control of the group control device 12, a new hall call is learned through the above-mentioned broadcast communication,
The most suitable service machine for the newly generated hall call is selected from each machine control device MIA, to 1H, and is provided for service.

Next, the detection of a failure in the group management device 12 of the present invention or the serial transmission device between the group management device 12 and each car control device IA, ~1H, and the processing of each car control device IA, ~1H at the time of failure are described in the seventh section.
This will be explained using the flowchart shown in the figure.

That is, each machine control II device IA, ~1H has a program of 5TA for the machine control microcomputer 4A~4H when the power is turned on.
Execute from RT, initialize the RAM area, and then proceed to symbol R3P1.

Symbol R3P1 checks for an abnormality in the group microcomputer in the group management device 12 (here, this is done by reading and determining whether the group microcomputer's watchdog timer is on or not with each machine control microcomputer, so it will not be explained in detail. ), then the group control device 12 and each machine control device ff!
Check the failure status of the series transmission equipment between fIA and ~1H, and if there is an abnormality, it is a failure of the group control unit 12 or the serial transmission equipment. It reads the time information from the internal clock (7A, ~7H), and if it is in a predetermined peak time period (for example, dispatch time and lunch time), it switches to the dispatch or lunch demand operation mode and dispatches. If the car position is other than the standard floor, a pull-back command is output to the standard floor, and the car is pulled back to the standard floor. Also, when approaching the standard floor in the ascending direction and decelerating, it issues an advance command, flickers the hall lantern, disables the door open button for a certain period of time, and opens the door. Furthermore, when a passenger gets on the train and presses the button for the desired floor to generate a car call, the door is closed after a certain period of time and the car call is answered.

Next, when there is a demand for lunch, a forced stop command is issued to the cafeteria floor before the car passes the cafeteria floor (previously set in the ROM and stored in the microcomputer for the sub-side of each machine).

As described above, the present invention provides a clock in each machine control unit in group management control that allows each machine control unit to perform optimal service based on the current response and call registration situation under the control of the group management unit. When a failure occurs in the group management device with a circuit and simple group management function, or in the serial transmission device between the group management control device and each @tsubo control device, when this is detected on the side of each unit control device, each unit control device side Based on the time information of the clock circuit, each independently determines whether or not it is the peak driving demand time.
Peak operation R If it is the required time period, it will be suitable for the peak demand i Easy peak operation 1 For example, if the demand is at work in the morning, it is for that, or if there is demand at lunch time, it is for that purpose. This makes it possible to realize an elevator group management control device that can prevent extreme deterioration of service to the floor in demand even in the event of an abnormality.

[Effects of the Invention] As described above, according to the present invention, there is provided an elevator group control device that can cope with high traffic demand even when group control is impossible, and that can improve service and obtain high reliability. Can be provided.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a group management system showing one embodiment of the present invention, Fig. 2 is a block diagram showing an example of the configuration within the unit control device of the present invention, and Figs. 3 to 7 show the operation of this device. FIG. 8 is a flowchart for explaining the configuration of a group management system for explaining a conventional example. IA, ~1H... Unit control device, 2... High speed serial transmission bus, 3A, ~3H... Interface circuit for high speed serial transmission, 4A, ~4H... Unit control microcomputer, 5
A, ~5H... Common RAM, 7A, ~7H... Clock circuit, 8A, ~8H... Interface circuit for low-speed serial transmission, 9A, ~9H... Interface circuit for low-speed serial transmission, 10. ...Hall call registration device, 11
A, ~11H... Car call registration device, 12... Fresh management device, 13... LS bus, 17... CPLI for main control, 18... HDLCDMA controller... Traffic controller, 20...・Random access memory (RAM), 21 ・Read only memory (ROM), 22 ・・DMA controller (
direct access), 23...system bus, 8A
...Low-speed serial transmission interface circuit, 24...
- CPU for low-speed serial transmission, 25... Serial communication unit (SCtJ), 26... Line driver, 27... Line receiver -128... Input buffer, 29... Output buffer, 30...・RAM
131...ROM. Applicant's representative Patent attorney Takehiko Suzue, 5: 3 mouth [1°: 14 Figure i, "r 5 Figure Li) 6 Figure F1) 71.

Claims (1)

[Claims] Multiple elevators are put into service for multiple floors, each elevator is equipped with a unit control device that controls a single elevator, and each elevator responds to hall calls that occur. Elevator group management is performed by providing a group management device that performs predetermined evaluation calculations related to the time required for the elevator, selects the most suitable elevator, and assigns and responds to the front symbol machine control device corresponding to that elevator. In the control device, each unit control device has a clock circuit that obtains time information and monitors abnormalities in the control by the group control device, and when an abnormality is detected, the time information of this clock circuit is used to determine whether it is within a predetermined traffic demand time. This is a special operation in which the system checks whether the vehicle is running or not, and if it is within a specified traffic demand period, it operates in a preset driving mode corresponding to that time period, and if it is outside the specified traffic demand period, it operates in response to a call that occurs. An elevator group management control device characterized by additional functions.