JPS60252575A - Method of modernizing control system of lift group - 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 The present invention relates to a method for modernizing a lift group control system by modifying a group control system that controls the operation of a lift group and connecting it to an existing lift specification control system.

When modernizing an older lift fleet, it is desirable to change the control system one lift at a time (several in large lift fleets) with as little loss of lift service as possible. If you do this,
An undesirably long waiting time due to a reduction in the transportation capacity of the lift group due to the disconnected lifts is avoided.

Since decoupling is completely unavoidable, the modernization process will proceed in stages, the first of which will be aimed at improving the efficiency of group control.
We will use various equipment provided by new technologies and apply them in such a way that there will be no reduction in transport capacity within the building during the transition to the new system, while at the same time maximizing the improvement in transport capacity obtained as a result of the change. It is best to apply it so that

Known methods use conventional control systems designed for new buildings and control systems for lift groups one at a time.
Take one or more lifts out of service and modernize them in stages. In such a method, all changes in the control of one lift are carried out at once, or in the case of several lifts, in whole or in part in parallel. It is therefore understood that the new group control system will be installed in parallel and connected to the old control system to control the modernized lift.

This method presents several drawbacks.

The available transport capacity within a building is significantly reduced during the modification, for example in a group of four lifts, two lifts are usually disconnected at a time, reducing the transport capacity by half. It should be noted that this phase, in which transport capacity is significantly reduced, generally lasts several months.

Furthermore, the above method has the significant disadvantage that, in the case of large lift groups where the changeover must be carried out in more than one stage, the transition period during which the entire lift group is controlled by two group control systems becomes longer. It has its drawbacks. This gives rise to several drawbacks.

First, such a transition period results in incomplete coordinated control, resulting in reduced capacity and increased waiting times compared to controlling the same number of available lifts with one group control system. Secondly, in this situation it would be wasteful to temporarily connect both groups of control systems together due to technical differences, so each floor is usually provided with two sets of paging points, so that passengers To be sure, both systems are generally pressed, causing both group control systems to launch the lift to that floor, resulting in even lower transport capacity and longer waiting times.

Control systems specifically designed for modernization and associated modernization methods are also known in the art. These are based on replacing the old group control system with a new microcomputer system containing a high performance microcomputer to which the input and output data required to control all of the old lifts are directly connected.

For this purpose, the control system contains a large number of voltage adapters, for example up to 1000 adapter units in a medium-sized lift fleet. In order to minimize the effort required for modification, older lift specification control and regulation equipment is being modified to allow the required signals to be exchanged between the old and new systems.

This approach has the disadvantage that modernization beyond 5 is difficult. That is, when replacing the control system of a lift with one of new technology, the various connections to the group control system, which have already been changed once, need to be changed again. This is because the adapter circuits for the various signals are adapted to the structural and operational principles applied in the era to control systems implemented with relays, transistors or logic circuits.

Apart from the fact that in older systems the voltages are higher and often alternating voltages, the principle of operation is significantly different due to the use of electro-mechanical accessories such as floor selectors. Maintaining the signal voltage and data definitions of the old control system design in the new system is technically problematic, requires extra costs, and creates problems in the field of service, spare parts and training in long-term operation. . Attempting to solve these problems forces designers to make compromises that prevent them from taking advantage of all the benefits offered by modern technology.

Other significant disadvantages of modernization-only systems are that their traffic performance is limited and their flexibility to changes required by changing regulations is limited. It is clear that improved systems of this type have not yet optimized call distribution, so the deficiencies of the basic system remain largely intact. The call distribution principle is complex and slow to develop, so that the system's operating principles can only be improved once computers can be easily adapted to improve the operating principles of legacy systems already in use. The improvement lies in, for example, recognizing traffic conditions and excessive waiting times and performing replenishment operations accordingly.

In order to eliminate the above-mentioned drawbacks, in the method of the invention a matching computer is connected for each lift between the new group control system and the device for controlling the various functions of the lift, and by this matching computer The present invention is characterized in that a lift specification signal is transmitted to the control device of the lift and the group control system.

The method according to the invention has the advantage that the modification of the entire lift group can be carried out in stages, the first stage of which mainly concerns the group control system, and that most of the work can be carried out in advance as preliminary work. can get. The transition to a disconnection control system can be carried out quickly, and since only one group control system is used during the transition, there is no reduction in transport capacity due to parallel systems.

Further modernization work is usually required after several years in practice.

In a lift provided with an intelligent and variable group control system according to the invention, this work is directed primarily to the control device of the lift itself, for example to improving the control of old drives and improving the shaft arrangement. Generally, these operations are extremely time consuming, but with the present invention such modernization can be carried out under the control of a single group control system during the operation.

In an advantageous embodiment of the method according to the invention, at least a portion of the matching computer is used to supplement the existing signals of the lift or to form these signals themselves by generating them from other signals by logical operations.

The formation of such additional signals is often required for efficient operation of new group control systems - these additional signals can be easily formed by the matching computer according to the invention.

In a further advantageous embodiment of the method according to the invention, at least a part of the matching computer also performs the functions of lift control, thereby replacing the original control device for controlling the functions of the lift.

In a further advantageous embodiment of the method of the invention, the lift group matching computer is arranged to communicate with the group control system via two separate data transfer buses.

The invention will be explained in detail with reference to the drawings.

The typical equipment of a lift group using old technology, shown in block diagram form in Figure 1, is a matching unit 1 for calls coming from each floor, a distribution unit 2 for calls coming from each floor, and a Above call pokun se soto 3 and 4
and five identical lifts 5, the lift section consisting of a special lift control unit 6 and associated special control functions such as a generator 8 and a floor selector 9. The main components of the lift itself are a counterweight 10, a motor 11, and a car 12.

In applying the modernization process of the present invention, work begins by installing both a new group control computer and a matching computer in the engine compartment. These units are small and the connection between the matching computer and the group control combination is in the so-called series mode, requiring only a few connections and risking interference even over relatively long distances. These installations are easy as they are not permanent.

In the next step, a test program and a terminal are used to perform a second run of the group control computer, after which
Take the machine lift out of service and connect the matching computer to the old control system.

This task is accomplished by simply connecting most signals to the terminal strips of the old control system. Some signals will need to be connected directly to the relay circuit in parallel with the old relay by cutting the old signal path and inserting contacts. Once this is completed, the lift is started under the new group control computer, after which the next lift is connected in the same manner, and so on, all lifts are connected to the new lift control system.

FIG. 2 shows that a new group control computer 13 and matching computer 14 have been installed and the connection is partially terminated so that the matching computer 14 can follow the operation of the old lift control but cannot exert control on the old lift control. 2 shows a book diagram of a modernization stage in which there is no modernization (this state is indicated by a traffic light direction arrow 15). At this stage, one of the two sets of pushbuttons is connected to the new control computer 13, as shown in FIG.

FIG. 3 shows the end state of an example of the modernization method according to the invention, in which the lift group 5 can be run under the new group control computer, and this state can be changed to 2 without representing the path of the signal. This is indicated by the directional arrow 16, and in this state the other core call button (3) is also connected to the new group control computer 13. At this stage, the transfer of the lifts to the new control is accomplished with very simple wiring operations that can be carried out with minimal delay for each lift.

FIG. 4 shows the end state of another example of the modernization method of the invention, in which each lift 5 is equipped with a new lift specification control unit 17 having two parts: a power control 18 and a lift control 19. The lift control unit 19 is a computer 2 that replaces the matching computer 14 that controlled the lift in the pre-modernization process.
It has 0.

Figure 5 shows the change in lift carrying capacity when applying conventional modernization methods. For example, consider a group of six lifts that is divided into three parts. In the figure, level 21 represents the transportation capacity of the old lift group,
Level 22 shows the state when the second lift is disconnected for repair, level 23 shows the state when the repaired first lift is put back into service, and level 24
shows the condition when the repaired second lift is put into use again. Modernization continues in the same manner for the next pair of lifts, with the final result of the modernization process being level 25.

FIG. 6 shows the change in the carrying capacity of the lift when modernization is carried out according to the method of the invention.

In the six-lift group, only the group control will be modernized initially. Level 26 shows the carrying capacity of the old lift fleet, and interval 27 shows the situation when lifts are disconnected from the old system and connected to the new system one at a time. Level 28 indicates a state between two different examples. If desired, modernization can continue after any period of time to achieve a control system such as that in Figure 4, where level 29 is the state when the first lift is disconnected for subsequent modernization. , level 30 represents the end of the modernization of the first lift, level 31 represents the modernization of the next lift, and so on.

When evaluating the effectiveness of modernizing lift control systems to improve lift service, it is natural to consider the characteristics of the old system as a key factor. It will be clear to those skilled in the art that the levels in Figures 5 and 6 represent the progress of the work and that significant differences may occur in practice, and that the examples shown in Figures 5 and 6 are useful for improving service and time. It is clear that this shows representative conditions for both.

FIG. 7 is a block diagram showing the configuration of a group control system according to an example of the present invention.
A matching computer (FIG. 3) was provided with an old lift control unit 34, with dual connections from the group control computer to the matching computer using two separate connection links 35 and 36. There is. The control computers 32 and 33 are connected to an external call connection line 38 via an external call matching unit 37.

The group control computer shown in FIG. 7 reads the signals coming from the floor via an external call matching unit 37.

This computer makes optimal calculations for call distribution based on these signals and data regarding location, car calls coming through other data transfer links 36, and lift status data, after which the group control computer A reservation call is sent to each matching computer via the data link 36 of the matching computer.

FIG. 8 shows the basic design of the matching computer. The matching computer includes a computer CPU 45,
A car call matching unit 39, a voltage matching unit 40 for matching signals of lift drive modules, a relay matching unit 41, a car call line 42, a large drive control signal line 42, and an output drive control signal line. Equipped with 44.

The matching computer 14 reads the required signals from the car call matching unit 39 and the lift drive module signal matching unit 40, compiles these signals into one table, and sends this to the group III il computer 32, which is used for matching. Sent when polling a computer.

The group control computer provides instructions to its drive control module using each separate relay in the relay matching unit 41 when informing the matching computer which of the calls from the floor to service after the optimization calculations.

During the run, the matching computer 14 also reads the floor selector which cooperates with the old drive module and maintains the lift position information from the matching unit 43. The matching computer may combine this position data with information received from the call button in the car and the group control computer to determine, for example, when to begin deceleration. At this point, the matching computer issues a deceleration command to the lift drive via the relay matching unit 41. When the lift is stopped, the matching computer also issues a command to the door control via the same relay matching unit, thereby activating the door control to open the lift door. Door opening is confirmed via matching computer 43 by polling the "door oven" contact of the door control.

On the basis of other data, for example data regarding the traffic situation received from the group control computer, the matching computer 14 can also carry out actions to improve the quality of operation in the case of individual lift control to the extent possible, e.g. Door control can be improved. The door opening time is changed according to messages regarding the traffic status from the group control computer. It is possible to lengthen the door opening time on one floor and shorten the opening time on other floors based on the assumption that there will be only people getting off and no one getting on. It will be apparent to those skilled in the art that the matching computer can perform several other auxiliary tasks that improve the performance of the lift group, and these will not be discussed in detail as they are not important to the understanding of the invention. do not.

When operated as described above, the actual main task of the machine notching computer is to adapt and make it compatible with the lift control technology of the new II model. The machine notching computer accomplishes this task while assembling the essential information from the original lift controller as described above and converting this information to binary code data.

This information is sent to the group control computer in order of acceptance, ie when the group control computer requests it. In this way, the group control controller and controller will be able to send and receive data as if it were a lift control unit with modified lift specifications belonging to the system, and this point is the gist of the present invention.

The additional task of the matching computer is, for example, to read the internal signals of the old control system from the matching unit 40 and to combine these signals with the basic signals already present in the store to provide the missing data in the group control protocol. It is about making it happen.

The central processing unit 45 of a combination computer used in a matching computer is, for example, a CPU board, and a memory board, two data transfer channel boards, and a power pack are used as auxiliary devices. The CPU hoard of the matching computer CPU performs the actual control operations and makes various decisions using programs stored on the memory board and information received from the group control computer via the data transfer bus hoard.

In certain functions, the CPU board uses auxiliary utility circuits that include a number of auxiliary circuits, such as circuits that provide a desired time delay for door control. The design and operation of this type of computer is consistent with common computer technology and is well known to those skilled in the art, and is not within the scope of the present invention.

Those skilled in the art will understand that the present invention is not limited to the above-mentioned examples;
Obviously, various modifications are possible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating the equipment of a lift group using the prior art; FIG. 2 shows a modernization of the lift group of FIG. 1 in accordance with an example of the present invention, with the new control system J. FIG. 3 is a block diagram showing the state in which the modernization shown in FIG. 2 has been advanced to the final stage; FIG. 4 is a block diagram showing the state in which the modernization shown in FIG. A block diagram showing the modernized final state of the group; Figure 5 is a diagram showing changes in transport capacity of the lift group when modernization is carried out in the conventional manner; Figure 6 is a block diagram showing the modernization in accordance with the method of the present invention. FIG. 7 is a block diagram of a group control system according to an example of the present invention, and FIG. 8 is a block diagram showing the basic configuration of a matching computer. 1...Matsuchinko unit 2...Distribution unit 3.4...Call button 5...
Lift 6... Lift control unit 8... Generator 9... Floor selector 10... Counterweight 11... Motor 12... Car 13... New group control computer 14... Matching computer 1'5.16... Signal direction arrow 17... New specification control unit 18... Power control section 19... Lift control section 20
...Matching computer 32.33...Group control computer 34...Old lift control units 35, 36...Connection link 37...External call matching unit 38...External call connection line 39. ...Car call matching unit 1. 40... Voltage matching unit 41... IJ L, +7 matching unit 42.
...Car call line 43...Large drive control signal line

Claims (1)

[Claims] 1. In modernizing the group control system that controls the operation of the lift group and connecting it to the existing lift specification control system, in modernizing the control system of the lift group, a new group control system is installed for each lift. A matching computer (14) is connected between the system (13) and the device (6゜7.8.9) that controls the functions of the lift, and the matching computer (13)
) D, the lift specification signal is sent to the control bag W of the lift,
(6, 7, 8, 9) and the group control computer (13
) A method for modernizing a control system of a RIF I group, characterized in that: 2. The method according to claim 1, wherein at least a part of the matching computer (14) also performs a lift control function to control the functions of the lift. A method for modernizing a control system of a lift group, characterized by replacing the. 3. In the method according to claim 1 or 2,
At least a part of the matching computer (14) generates the signals required by the group control computer (13) by supplementing existing lift signals or by forming these signals themselves from other signals by theoretical calculations. How to modernize the control system of the lift group, characterized by the occurrence of problems. 4. The method according to any one of claims 1 to 3, wherein a matching computer (
14) A method for modernizing a lift group control system, characterized in that it is arranged to communicate with said group control system (13) by two separate data transfer buses (35, 36).