JPS6013946B2 - Group control elevator system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a group control elevator system that uses a system processing unit to allocate hall calls or pseudo calls to optimal cars.

In recent years, as buildings have become taller, elevators have become faster, the number of elevators has increased, and elevator services have become more sophisticated, the conventional control devices using relays or hard-wired logic control devices using many ICs have been replaced. A software-based group control elevator system using a system processing unit is adopted, achieving sophisticated control that was not possible with conventional equipment. For example, a system that allocates calls generated in a hall to the optimal car that provides the best elevator service based on the car position of each elevator in the group, the presence or absence of a car call, or the car status (stopped, running, number of passengers, etc.); There is a method in which a pseudo call is generated at a floor position extracted so that the current and near future elevator service is distributed evenly to all floors or all waiting customers, and the pseudo call is assigned to the optimal car.

The above-mentioned complex centralized management of group elevators can be easily achieved using software by using a system processing unit, but in order to reduce the role played by the system processing unit and downsize the hardware, general In this system, a system processing unit simply allocates calls, each elevator control device stores the allocated calls, and responds to the allocated calls and performs individual entrainment control.

Even in that case, in order to simplify hardware and software, the system processing unit usually does not receive an answer back from the elevator control unit when allocating calls. Therefore, if there is a failure in the transmission line of the call assignment signal and the calls assigned by the system processing unit are not transmitted satisfactorily to the elevator control unit, or if there is a failure in the assigned call storage circuit in the elevator control unit and the system processing unit Even if the calls to be assigned are not stored in the elevator control device, the system processing device will not be able to detect these failures and the group elevator will not only not carry out the calls requested by the system processing device, but also cause the elevator service to fail. The drawback was that it was extremely deteriorating. In order to improve these shortcomings, the system processing unit receives answerback from each elevator control device, or constantly selects the optimal car from the ever-changing car position and car condition of each elevator and changes the allocation. Methods have been proposed, but in the former case, the scale of both hardware and software becomes large, and in the latter case, the optimal car may not change when there are few movements of cars, such as during quiet hours at night, so it is not reliable. It wasn't the method. The present invention provides a method that can detect the above-mentioned failures at any time and prevent deterioration of elevator service without increasing the scale of hardware and software even if such failures occur. It is something to do. An embodiment of the present invention in which three elevators are installed together to service one Kaga floor building will be described below.

FIG. 1 shows the basic signal flow of the annexed elevator control system. 1 to 3 and 11 to 13 are the control devices and cars of the attached elevators of Units 1 to 3, and the hall call registration device 30 (partially not shown) installed at each floor Hataba (not shown) is activated. 40 is a hall call memory device which memorizes the hall call from the hall call registration signal stamp when the hall call is called, and erases the memory when any car stops in response to the hall call; It shows a system processing unit that is centrally managed.

AI to A3 (subscripts 1 to 3 indicate elevators 1 to 3, respectively, and will be used in the following explanation) are car position signals, ascending or descending operation signals, and cage status signals (stop, run, car call) of each elevator. , number of passengers), etc., is transmitted from each elevator control device 1 to 3 to the system processing device 40.

BI to B3 are assignment signals and cancellation signals for assigned hall calls and assigned pseudo calls, and are transmitted from the system processing device 40 to each elevator control device 1 to 3. C is a hall call signal stored in the hall call storage device 20, and D is a hall call deletion signal, which is transmitted between the system processing device 40 and the hall call storage device 20. FIG. 2 shows the allocated call storage area of the system processing unit 40.
~M3 is the assigned call memory area for elevators 1 to 3,
1 to 10 correspond to floor positions. For example, if the 8th floor ascending hall call is assigned to elevator No. 1, MI-
Similarly, descending hall calls or pseudo calls are also stored in the corresponding floor positions of the assigned elevator call storage areas MI to M3. In FIG. 2, a common storage area is used to store hall calls and pseudo calls, but separate storage areas may be used for ascending hall calls, descending hall calls, and pseudo calls. FIG. 3 shows the allocated call elapsed time storage area of the system processing unit 40, where MTI to MT3 correspond to the allocated call elapsed time storage areas for elevators 1 to 3, and 1 to 10 correspond to floor positions. , stores the elapsed time from the allocation time to the present for each allocated call shown in FIG.

(The symbol 'IT' at the position of MTI-8 indicates the elapsed time.
) Since known hardware or software can be applied to the time calculation method, the explanation will be omitted.

With reference to FIGS. 1 to 3, a case will be described in which, for example, an 8th floor ascending hall call is assigned to the No. 1 elevator by the system processing device 40.

In Fig. 1, when a waiting customer on the 8th floor activates the hall call registration device 30 and issues an ascending hall call, 3
The hall call registration signal is transmitted through the path of oH2o, stored in the hall call storage device 201, and transmitted through the path of the 8th floor ascending hall call signal 2oS4o.・-"△L-
÷ 40 - direction, 2△shita No. 1 to 3 units 3 A3 Since the elevator car information signal is being transmitted, the system processing unit 4 can control the elevator control unit 1 in the optimal way.
Assign to one of ~3.

For example, if elevator No. 1 is the optimal car,
The 8th floor ascending hall call assignment signal is 1 on the 4o daytime 1 route.
It is transmitted to the elevator control device 1 of the car.

At the same time, the system processing unit 4 stores it in the MI-8 position of the allocated call storage area in FIG. 2, and calculates the elapsed time in the MT package-8 position of the allocated call elapsed time storage area in FIG. Start. Now, if the transmission line is normal and the No. 1 elevator control device 1 is normal, the No. 1 elevator control device 1 in FIG. The car 11 is brought to the eighth floor and stopped by a method (not shown).

The No. 1 elevator control device 1 erases the 8th floor ascending hall call that it had stored (not shown), and at the same time performs system processing using the No. 1 elevator elevator car information signal transmitted through the route 13,040. The device 40 transmits the hall call cancellation signal through the path 4oD2o, and the hall call storage device 20
The 8th floor ascending hall call that he had memorized will be erased.

On the other hand, the system processing unit 40 erases the memory of the position of MI-8 in the allocated call storage area of FIG. 2, and finishes the elapsed time calculation of the position of MTI-8 in the allocated call elapsed time storage area of FIG. do. Thereafter, hall calls are assigned to elevators Nos. 1 to 3 in the same manner, and the elevators respond to the calls and take them there, thereby realizing smooth elevator service. The same is true for bringing elevators by assigning pseudo calls. Next, if a failure occurs in the transmission line, or if the elevator control device fails and the assignment signal is not stored, or if the elevator cannot be taken, a situation occurs in which the assignment call is not answered for a long time. Let me explain the case. However, the process of registering the hall call and allocating the hall call to the No. 1 elevator is the same as described above, and a description thereof will be omitted. In Figure 1,
The No. 1 elevator control device 1 does not receive the allocation signal when the transmission line is out of order, and when the No. 1 elevator control device 1 is out of order, it cannot store the allocation signal or cannot carry the car 11. cannot reach the 8th floor. (Even if the arrival of car 11 to the 8th floor is delayed for some reason, the operation described below is performed.) The elapsed time calculation at the position of MTI-8 in the assigned call elapsed time storage area in FIG. When the process progresses and a predetermined period of time has elapsed, the system processing unit 40 refers to the elapsed time memory of MTI-8 and detects this as some sort of trouble has occurred due to the No. 1 aircraft getting stuck outside the elevator W. Then, an assigned call cancellation signal is transmitted to the No. 1 elevator control device 1 via the path 4oBII, and at the same time, the memory of the location of MI-8 in the assigned call storage area in FIG. Ends the elapsed time calculation in the allocated call elapsed time storage area. Thereafter, by selecting and allocating the optimum car from the elevators excluding the No. 1 elevator for the 8th floor up hall call, it is possible to suppress the deterioration of the service for the 8th floor up hall call, which had a long response time. Needless to say, down hall calls and pseudo calls are also detected as being answered for a predetermined period of time and canceled in the same manner as above. Furthermore, if the predetermined time period for detecting unanswered calls to assigned hall calls or pseudo calls is changed depending on the traffic demand of group elevators or individual elevators, more fine-grained service improvement can be realized. .

FIG. 4 is a diagram showing an embodiment of the present invention in which the predetermined time is changed depending on traffic demand, and the same parts as in FIG. 1 are designated by the same reference numerals.

In FIG. 4, 41 is an assignment circuit "B1a" which selects and assigns the most suitable elevator based on the operating direction, car position, car condition, etc. of each car when the hall call signal C is input.
-B3a is the allocation signal for the first to third machines; 42 is a counting circuit that counts and outputs the elapsed time since the input of the allocation signal B1a for the first machine (the number machine is not shown). ), 43 is a relay contact that is turned on when traffic demand is slow, 44 is a relay contact that is turned on when traffic demand balances, 45 is a relay contact that is turned on when traffic demand is peak, V, ~V3 are the above-mentioned A reference value corresponding to a predetermined time; 46 is a comparator that outputs a signal B1b for canceling the allocation to the first machine when the output of the counting circuit 42 exceeds the reference; 47;
When the first car arrives at the floor in response to the assigned hall call, it sends the set signal RS and the hall call clear signal D.
This is a response detection circuit that outputs . In the above configuration,
Assuming that it is now the peak time of traffic demand, the contact 45 is closed and the predetermined time is set by the reference value V3.

Here, a hall call for a certain floor occurs, and the allocation circuit 411
If this is assigned to Unit 1, as mentioned above, 4
The allocation signal B1a is transmitted to the first elevator control device 11 through the oBII path, and the counting circuit 42 counts the elapsed time from that point. When the No. 1 car responds to the hall call within a predetermined time and stops, the response detection circuit 47 outputs the hall call deletion signal D, the hall call is deleted, and the counting circuit 42 is activated by the reset signal RS. IJ is set.

If the failure occurs within the specified time due to a failure in the control device or transmission line, etc.
If the No. 1 machine does not respond, the comparator 46 outputs a cancellation signal B1b, thereby canceling the assignment to the No. 1 machine. At this time, if the reference value is set as V, V2 < V3, the predetermined time will be short during off-peak hours when the traffic volume is low and the unanswered time is relatively short, and during peak times when the traffic volume is high and the unanswered time is relatively long. The predetermined time can be set longer, that is, the predetermined time can be set in accordance with changes in traffic demand, and reliable detection of failures and improvement in driving efficiency can be achieved at the same time. From the above description, it is clear that according to the present invention, it is possible to prevent deterioration of elevator service by a simple method, and also to detect failures in transmission lines and elevator control devices.

[Brief explanation of drawings]

FIG. 1 shows the basic signal flow of the annexed elevator control system. FIG. 2 shows the allocated call storage area. Third
The figure shows the allocated call elapsed time storage area.
FIG. 4 is a diagram showing an embodiment of the present invention in which the predetermined time is changed according to traffic demand. 1 to 3...
Units 1 to 3 elevator control device, 11 to 13...
・1 to 3 elevator cars, 20...Hall call storage device, 30...Hall call registration device,
40...System processing unit, AI~A3...
...Elevator car information signal for Units 1 to 3, BI to B3
....1 to 3 elevator assignment signal and cancellation signal, C.....Hall call signal, D.....Hall call cancellation signal, Day...Hall call registration signal, M.
I to M3... 1 to 3 elevator allocation call storage area, MTI to MT3... 1 to 3 elevator allocation call elapsed time storage area. Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 Install multiple elevators serving multiple floors, and use a system processing device to select the optimal car for each hall call and assign the hall call, or select a floor extracted by a predetermined method. generate a pseudo call to the location,
In a group control elevator system that selects the most suitable car for a given call and assigns the pseudo call, when the car to which the hall call or the pseudo call is assigned does not respond to the call for a predetermined period of time, the car that has already been assigned The group management elevator system is characterized in that the allocation of the already-completed hall call or the pseudo-call to the allocated car is canceled, and the predetermined time is changed according to traffic demand.