JPS6256071B2 - - Google Patents

Description

[Detailed description of the invention]

This invention relates to an improvement in a device for automatically stopping an elevator. Conventionally, when an elevator car has answered all the calls it should have answered and becomes empty, it automatically shuts down after a specified period of time by turning off the power to some of the control devices, the lights and ventilation fans inside the car, etc. A so-called automatic hibernation operation is performed to save power. Then, if a call to answer occurs during the pause, and the call is on your own floor, open the door immediately,
If it is on another floor, it will start up and start the service. These time relationships are shown in FIG. 1. In other words, assuming that the car becomes empty at time t ₁ , the power is turned off at time t ₂ , and the service starts due to a call at time t ₃ , then T ₀₁ is the period from when the car becomes empty until the power is turned off. In the specified time, T ₀₂ is the idle time of the car, and T ₀₀ is the duration from when the car becomes empty until the next activation. However, the shorter the predetermined time T ₀₁ for the automatic pause operation is, the longer the pause time T ₀₂ becomes, increasing the power saving effect. →Driving→
Because the cycle of stopping and then running becomes more frequent, the lifespan of control device parts and lighting equipment is shortened, and maintenance problems also occur. Conversely, the longer the specified time T ₀₁ is set, the more times the device will be restarted within the specified time T ₀₁ and the fewer times the power will be turned off, which will prevent shortening of the life of the appliance, but the longer the down time T ₀₂
becomes shorter and the power saving effect does not increase. Therefore, it has been proposed to vary the specified time T ₀₁ depending on the time of day in an attempt to increase the power saving effect without significantly impairing the life of the appliance. However, in general, for a while (for example, one year) after the building is completed,
Traffic conditions within a building change, and in a rental office building, traffic conditions may change significantly even several years after construction is completed, so it is important to set the optimal specified time T ₀₁ in advance. That is difficult.
Furthermore, it is a heavy burden for the staff member to change the specified time T ₀₁ , and this is also difficult. This invention improves the above-mentioned problem by detecting the duration of the empty car state and estimating the idle state of the car by setting different provisional specified times for each, and then estimating the idle state of the car based on the above-mentioned provisional condition that is optimal for the evaluation formula. Provides an automatic elevator stop device that automatically performs the optimal automatic stop operation even if the traffic situation in the building changes by selecting a specified time and setting it as the regular specified time. The purpose is to Hereinafter, an embodiment in which the present invention is applied to a case where one car is installed in a six-story building will be described with reference to FIGS. 1 to 8. In Fig. 2, 1 is a specified time setting circuit which is composed of an electronic computer such as a microcomputer and sets and outputs a specified time signal 1a corresponding to the specified time T ₀₁ , and 2 is a central processing that constitutes the specified time setting circuit 1. 3 is a read/write memory (hereinafter referred to as RAM) that stores data such as calculation results, 4 is a read-only memory (hereinafter referred to as ROM) that stores programs and fixed value data,
5 is an input circuit that constitutes a converter for taking input signals into CPU 2; 6 is an output circuit that constitutes a converter for outputting signals from CPU 2; 7;
7a to 7c are the outputs of the control circuit 7, and 7a to 7c are the outputs of the control circuit 7. 7b is a stop signal which is "H" when the car is stopped and "L" when it is running; 7b is a door open/close signal which is "H" when the car door is closed and "L" when it is open; 7c is a call signal which is "H" when there is a call to answer, and "L" when there is no call to answer, and 8 is a time signal emitted from a clock (not shown). In Figures 3 and 4, STOP is the stop signal 7a
When is “H”, it is “1” and when it is “L”, it is “0”
DOOR is the door opening/closing data which is "1" when the door opening/closing signal 7b is "H" and "0" when it is "L", and CALL is "1" when the call signal 7c is "H". Call data becomes "0" when the signal is "L", TIME is time data representing time signal 8, FREE is "1" when the car is empty and in standby state, and "0" otherwise. The standby state flag, TZ, is a time zone flag that is ``1'' when a predetermined time zone (for example, 15:00 to 16:00) is reached, and ``0'' otherwise. ", the flag at the end of the time period, TX is the empty car state duration data that represents the time from when the car becomes empty until the service starts again, I is the counter, and LVL is the automatic stop during the above predetermined time period. Optimal prescribed time for T ₀₁
, VALUE is the specified time data output to the control circuit 7, DVI is the optimum evaluation value data for the optimum specified time data LVL, and T(1) to T(5) are the above-mentioned predetermined time periods, respectively. Cumulative downtime data representing the cumulative value of downtime _T02 when assuming that the prescribed time _T01 for automatic downtime in is set to predetermined values LV(1) to LV(5) (described later), N (1) to N(5) are pause count data representing the number of automatic pause operations when assuming that the specified time T ₀₁ is set to predetermined values LV(1) to LV(5) (described later); LV(1) to LV(5) are 60 seconds, 120 seconds, and 180 respectively
Specified time data for temporary settings set as seconds, 240 seconds and 300 seconds, LVX is specified time data for automatic suspension in time zones other than the above specified time zone (180 seconds), A and B are In the constant value data in the evaluation formula for determining the optimal prescribed time, A is a coefficient (set to 1) by which the cumulative pause time is multiplied, and B is a coefficient (set to 50) by which the number of pauses is multiplied. In Fig. 5, 10 indicates the input signal from the input circuit 5.
Input program to be loaded into RAM3 and set.
11 is a time period detection program that detects the predetermined time period and immediately after its end according to the time data TIME, and 12 detects the duration T ₀₀ of the empty car state in the predetermined time period and detects the assumed specified time.
A state calculation program for estimating the cumulative pause time and number of pauses for T ₀₁ ; 13 a regulation time setting program for selecting and setting the optimum regulation time T ₀₁ in the above-mentioned predetermined time period; 14 a regulation time data set; This is an output program that is output via the output circuit 6. In FIGS. 6 to 8, 20 to 24 are operating procedures of the time zone detection program 11, and 30 to 4
1 is the operation procedure of the state calculation program 12, 50-
Reference numeral 58 indicates the operating procedure of the specified time setting program. Next, the operation of this embodiment will be explained. The programs 10 to 14 are executed in this order once per second. A. Operation of the input program 10 This is just a program that takes input signals from the input circuit 5 into the RAM 3, so a detailed explanation will be omitted. For example, when the car is stopped, the stop signal 7a is "H"; Input circuit 5
The stopped data STOP is set to "1" in RAM3. B. Operation of the time zone detection program 11 In step 20, it is determined whether a predetermined time zone has arrived. If the time data TIME is between 15:00 and 16:00, the process proceeds to step 21, where the time zone flag TZ is set to "1". ”, the time zone end flag TZE is set to “0”. Time data in step 20
If TIME is other than 15:00 to 16:00, proceed to step 22, and if the time zone flag TZ is "1", proceed to step 24, and set the time zone flag TZ to "0".
Then, the time zone end flag TZE is set to "1". Therefore, after the next one second, the process proceeds from step 20 to step 22 and step 23, and both the time zone end flag TZE and the time zone flag TZ are set to "0". In other words, the time zone flag TZ is "1" while entering the predetermined time zone, and is "0" otherwise.
1 immediately after the above predetermined time slot selection is canceled
For only seconds, the flag TZE at the end of the time period is "1"
It will be set as follows. C. Operation of the state calculation program 12 In step 30, the state of the time zone flag TZ is determined, and if it is "0" (other than 15:00 to 16:00), the process proceeds to step 31, and then the time zone end flag TZE is determined. If is "0", the process proceeds to step 32, where cumulative downtime data T(1) to T(5) and downtime number data N(1) to N are initialized for calculation in the above-described predetermined time period. (5), the standby state flag FREE and the empty car state duration data TX are all set to "0"
Set to . When the time zone flag TZ becomes "1", the process proceeds from step 30 to step 33, where it is determined whether the car is empty. The basket is empty (STOP and DOOR are both "1",
CALL is "0"), the process advances from step 33 to step 34, and the standby state flag FREE is set to "1". In addition, empty car state duration data TX
is accumulated for a time corresponding to the calculation cycle of programs 10 to 14, that is, for one second. In this way, while the car is empty, the empty car state duration time data TX is incremented by 1 second each time in step 34. When a call to be answered is issued, the call data CALL is set to "1", so the process proceeds from step 33 to step 35. Immediately after a call occurs, the wait state flag is still FREE.
remains set to "1", so step 36
Proceed to. In steps 36 to 41, the specified time T ₀₁ for automatic suspension is assumed to be the specified time data LV(1) to LV(5) for temporary setting for the empty car state duration time data TX calculated in step 34. This is a procedure for estimating the automatic pause operation in each case, and adding up the cumulative pause time and number of pauses in each case. first,
In step 36, counter I is initialized to one.
Then, the calculations in steps 37 to 40 are performed until I=5. If the empty car state duration data TX is shorter than the specified time data LV(1) in step 37, the car has not reached the point where it automatically pauses, so the cumulative pause time T(I) and the number of pauses data N
(I) does not change. Empty car state duration data
When TX>regular time data LV(I), it is expected that the car will automatically stop, so the process advances to step 38. Here, the cumulative downtime data T(I) is “TX
−LV(I)” seconds, and the number of pauses data N(I)
increases only once. When the calculation at I=5 is completed, the process proceeds from step 39 to step 41, where the standby state flag FREE is reset to "0" and the empty car state duration time data TX is also set to zero (seconds).
will be reset to Therefore, in the next calculation after one second, the standby state flag FREE is "0", so the process goes from step 33 to step 35 to exit, and the calculations in steps 36 to 41 are not performed. In this way, the state calculation program 12 detects the empty car state duration T ₀₀ and calculates the cumulative downtime and the number of downtimes for the assumed specified time, respectively. D. Operation of the specified time setting program 13 In step 50, the state of the time zone flag TZ is judged, and if it is "1" (15:00 to 16:00), the process proceeds to step 58, where the above is set as the specified time data VALUE. Optimum prescribed time data LVL for a predetermined time slot (this is the optimal prescribed time set by the previous day's calculation, which is 60 seconds) is set. In this way, automatic suspension operation is performed in a predetermined time period using the optimum specified time data LVL. On the other hand, the state calculation program 12 generates prescribed time data LV(1) to LV(5) for each temporary setting.
The cumulative downtime data T(1) to T(5) and the number of downtimes N(1) to N(5) are estimated, respectively. When the predetermined time period ends, the process proceeds from step 50 to step 51, and the specified time data LVX (180 seconds) for a time period other than the predetermined time period is set as the specified time data VALUE. Immediately after the specified time period ends, the time period end flag is displayed.
Since TZE is "1", step 51 → step 5
2 → Proceed to step 53. Steps 53 to 57 are cumulative pause time data T(1) to T(5) and pause count data N calculated by the state calculation program 12.
From (1) to N(5), find the evaluation value representing the saving effect on elevator operating costs, select the provisional setting time data LV(1) to LV(5) that maximizes the evaluation value,
Optimal prescribed time data for a given time period
This is the procedure for setting it as LVL. First, in step 53, the counter I is set to 1, and the optimal evaluation value data is
DVI is set to zero. Then, the calculations in steps 54 to 57 are performed until I=5. In step 54, the cumulative downtime data T(I) for the I-th temporary setting specified time data LV(I) is calculated.
and the number of pauses data N(I), A×T(I)−
BXN(I) is calculated and compared with the optimal evaluation value data DVI. If A×T(I)−B×N(I)≦optimum evaluation value data DVI, the process proceeds to step 56 without doing anything, and if I=5, the counter I is incremented by 1 in step 57. In step 54, A×T(I)-B×N
If (I)>optimum evaluation value data DVI, proceed to step 55, where the evaluation value [A x T (I) - B x N (I)] is reset as the optimum evaluation value data DVI, and the optimum specified time The data LVL is also updated to the provisional time data LV(I). For the specified time data LV(1) to LV(5) for each provisional setting, the cumulative pause time T(1) to T(5) and the number of pauses N(1) to N(5) are as shown in the table below. If it is,
Finally, the optimal evaluation value data DVI is set to 510, and the optimal specified time data LVL is set to LV(2) (120 seconds).

[Table] E Operation of Output Program 14 This program is simply a program that outputs the specified time data VALUE calculated by the specified time setting program 13 to the output circuit 6, so its explanation will be omitted. Note that it is also possible to implement as follows. (a) Applies to cases where the number of elevator cars installed is two or more. In this case, the above-mentioned optimal prescribed time is selected for each car or for a plurality of cars at once. (b) Further subdivide and set the specified time for temporary settings. With this, a more appropriate prescribed time can be set. (C) Set the optimal prescribed time not only for a predetermined time period (3:00 p.m. to 4:00 p.m.) but also for multiple time periods. (d) The width of the time period is not limited to one hour units, but is determined in 30 minute units, two hour units, etc. depending on traffic conditions. (E) This applies not only when setting the specified time for each time zone, but also when setting the specified time according to the season, month, day of the week, holidays, weather, etc. (F) To select the optimal specified time, instead of using only the empty car status data in a predetermined time period one day ago, it is possible to select a predetermined time period in the past (one day ago, two days ago, three days ago, etc.). empty car status data is weighted and used to select the optimal prescribed time. This can reduce the negative impact of temporary changes in traffic conditions on the automatic stop operation. (G) In addition to the empty car status data from the previous day, use the empty car status data detected on the same day to select the optimal predetermined time for a predetermined evaluation formula each time the car becomes empty. do. This makes it possible to perform an appropriate automatic stop operation even in response to temporary changes in traffic conditions. (h) In the example, as a variable representing the hibernation state,
Although the cumulative downtime and the number of downtimes were estimated and linearly combined to evaluate the saving effect on elevator operating costs, the variables and evaluation functions representing the downtime state are not limited to these. Automatic shutdown operations include turning off lights, stopping ventilation fans, shutting off power to some control devices, and stopping motor generators.If the prescribed times for each shutdown are different, separate shutdown times will be set. The evaluation value can be calculated by determining the number of pauses. As explained above, in the present invention, the duration of the empty car state is detected, and the car's pause time or the number of pauses is estimated when different provisional specified times are set for this duration, and these pauses are By selecting a provisional specified time whose time or number of stops is optimal for the evaluation value and setting this as the regular specified time, even if the traffic condition of the building changes, there is no burden on the staff. without any
Optimal automatic stop operation can be performed, and elevator operating costs can be saved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the time relationship of automatic elevator stop operation, FIG. 2 is a block diagram showing an embodiment of an automatic elevator stop device according to the present invention, and FIG. 3 is a RAM of the prescribed time setting circuit of FIG. 1. Figure 4 is a diagram showing the contents of the ROM, Figure 5 is a diagram showing the entire program of the specified time setting circuit, and Figures 6 to 8 are each the time period shown in Figure 5. It is a flowchart of the operation of a detection program, a state calculation program, and a prescribed time setting program. 1... Specified time setting circuit, 1a... Specified time signal, 2... CPU, 3... RAM, 4... ROM, 5
...Input circuit, 6...Output circuit, 7...Control circuit, 7a...Stopping signal, 7b...Door opening/closing signal,
7c...Call signal, 8...Time signal. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. In a car that is configured to automatically turn off the power and put the car to rest after a specified time elapses after the car becomes empty, means for detecting the speed change time after the car becomes empty, and Means for estimating the downtime or the number of times the car stops when different times are set as temporary values of the specified time for the detected duration, and these downtimes or the number of times are set in advance. 1. An automatic elevator stop device characterized by comprising means for selecting a provisional value of the specified time that is optimal for the operating cost evaluation formula and setting it as a regular value of the specified time.