JPH03200681A - Position detection device of elevator floor - Google Patents

Abstract

PURPOSE:To prevent deterioration in riding comfortableness by obtaining a time from a floor value rewriting request of previous time till a rewriting request of this time, thereafter performing rewriting with an error rate if it is a specified time or more while performing floor value measurement operation if it is that or less. CONSTITUTION:This detector is composed of a pulse generator 6 for generating pulses proportional to the moving distance of a cage 1 from the rotation of a motor 5, a circuit 7 for counting these pulses, a microcomputer 8, plates 10 at elevation/descending way corresponding to the positions of respective floors 9, and position detectors 11, 12 provided at the cage 1. Addition is made in counters T1, T2 at every compution cycle to count the time between rewriting demands of floor value, and when an error rate is judged to be out of specified range, the time T1 from the previous rewriting is specified time or less is judged. If it is not the specified time or less the floor value data is rewrited with the error rate, and the counter T1 is set to an initial value 0. If the time T1 is the specified time or less measurement operation is performed when the time T2 from the previous floor value measurement operation is the specified time or more.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevator floor position detection device, and particularly to an elevator floor position detection device suitable for controlling an elevator using a microcomputer. It is.

[Prior Art] Fig. 3 shows a schematic configuration of an elevator floor position detection device that uses a microcomputer to control an elevator running on a plurality of floors, as disclosed in Japanese Patent Application Laid-Open No. 60-197572. . In Fig. 3, 1 is an elevator car, 2 is a counterweight, and 3 is a rope hung around a sheep 4, and a car 1 and a counterweight 2 are attached to the lower ends of the rope 3, respectively. are combined. 5 is an electric motor that drives the sheave 4, 6 is a pulse generator that generates pulses proportional to the moving distance of the car 1 from the rotation of the electric motor 5, 7 is a counting circuit that counts the pulses from the pulse generator 6, and 8 is a A microcomputer that takes in signals from the counting circuit 7 and performs predetermined arithmetic processing, and includes a CPU 8a and a ROM 8b as shown in FIG.

It consists of a RAM 8c, an input port 8d, and an output port 8e. 9 is a floor, lO is a plate provided in the hoistway corresponding to each floor, 11.12 is a position detector provided in car 1, and when car 1 reaches the level position of each floor, each output signal 11a , 12a to the counting circuit 7 and the microcomputer 8, the position detector 11 outputs a signal 10 mm below the level, and the position detector 12 outputs a signal 10 mm above the level. .

FIG. 4 shows a specific configuration diagram of the counting circuit 7 in FIG. The output pulse Ba from the counter CT2 is directly applied to the T terminal of the counter CT2, and a NAND circuit NAND1. The running pulses of the car 1 during each calculation period of the microcomputer 8 are counted and stored in each counter CTI, CT2, and the counted value is In the next loading process, the data is loaded into the CPU 8a via the manual boat 8d. The counting circuit 7 includes R-S flip-flops (hereinafter simply referred to as flip-flops) FFI and FF2, and each set terminal S of each of the flip-flops FFI and FF2 is connected to a NAND circuit NAND2. The outputs of NAND3 are connected to the output signals Lla and 12a of position detectors 11 and 12, respectively.
A NOR circuit N0R1 is provided which takes the logical sum of
The other input of AND2 is supplied with a signal obtained from the NOT circuit N0T3 through a time constant circuit consisting of the NOT circuit N0T2, a resistor R1, and a capacitor C1, and a signal obtained from the NOT circuit N0T3 or the NOT circuit N0T2. The signals obtained through the time constant circuit and the not circuit N0T4. It is added as a two-man power of NAND circuit NAND3 via N0T5. As a result, the NAND circuit NAND2. NAND3
When the flip-flops FF1 and FF2 are set by the output of , a counting stop is applied to the counter CT2.

If the count value obtained from the counting circuit 7 having such a configuration is taken into the microcomputer 8 and the settlement process shown in FIG. 7 is performed, the level position of each floor can be accurately determined.

That is, the position detectors 11 and 12 are for detecting the floor level position (for example, floor surface 1 (1++r@)), but the actual operating point is, for example, from floor surface 10m11 to floor path 3.
It continues to operate up to 00 degrees. Therefore, in this invention, the level value that takes into consideration the floor travel of 300 m+s for each floor, that is, 300 mm below the floor, is FLHD (1), and the level value that takes into account 300 tara above the floor is FLHU (1).
) is written to the RAM 8c of the microcomputer 8, and basically based on these values, [FLHD (1)
+FLHU (I)] By performing the calculation ÷2, the level position of each floor is determined, and this is stored in the RAM 8c to be used for selector correction, remaining distance calculation, etc.

Next, the operation of writing level position data for each floor will be explained based on the flowchart of FIG.

Before explaining the operation, FIG. 6 will be described. Figure 6(a)
is the level value on each floor of the N stop, taking into account, for example, 300 degrees below the floor, from the lowest floor to the highest floor, and stores it in RAM 8.
FLHD (0) to FLH from address 0 to address N-1 of c
D (N-1), and is shown in Figure 6(b).
) is a level value that takes into account 300 mm above the floor and is stored as FLHU (0) to FLHU (N-1) in addresses 0 to N-1 of RAM8c, corresponding to the lowest floor to the highest floor. Furthermore, Fig. 6(e) is similar to Fig. 6(a).
), (b) and set the actual level position from address 0 to address N-1 of RAM8c as FLHL (0
) to FLHL (N-1).

First, car 1 is stopped at the lowest floor. At this time, the level position corresponding to the lowest floor is [FLHD (0) + FLHU
(0)] ÷2, and the resulting level position is set as FLHL (0) as shown in Fig. 6(c).
Store it in address 0 of RAM8e.

Next, the car 1 is operated upward, and the pulses generated from the pulse generator 6 as the car runs are counted by the counters CTI and CT2, so that the total distance traveled by the car is +111J L
, the count value DPI of the counter CTI and the count value DPI of the counter CT2 are calculated by manual processing shown in step 200 of FIG.
The count value DP2 is taken into the microcomputer 8, and in the next step 201, the microcomputer 8 sends out a reset signal RESET to reset each counter CTI, CT2 and flip-flop FFI.

Reset FF2. When this reset process is completed, the process moves to the next step 202, and it is determined whether or not the car 1 is traveling upward. If "NO", the write process is not performed.

Also, if it is determined that the vehicle is traveling upward, proceed to the next step 203.
In step 111, it is determined whether or not the signal 12a of the position detector 12 rises, and if the result is rYEsJ, the microcomputer 8 moves to step 204, and then detects the position corresponding to 300 m+a below the floor of the floor. R to write the value
Process I+l so that it becomes the floor address of AM8c,
Then, in the next step 205, FLHD (1)←F
Performs SY+DP2 processing.

That is, the counted value DP2 of the counter CT2 is added to the car current position FSY, which is the cumulative addition of the calculated value DPI of the counter CTI taken in every calculation cycle of the microcomputer 8 and the distance traveled by the previous car. And this is FL
It is written as HD (1) to the address of RAM 8c corresponding to the first floor. Further, in step 206, as the car 1 moves up, FSY-FSY+DP1 is processed, and the count value DPI of the counter CT1 is taken in every calculation cycle of the microcomputer 8, and the current value of the car is cumulatively added.

On the other hand, if the determination in step 203 above is r NOJ,
Proceeding to step 207, it is determined whether the signal 11a of the position detector 11 is falling. If “NO” at this time,
Proceeding to step 206, cumulative addition processing of the current value of the car is performed. Also, if it is determined as rYESJ, step 208
Then, the process of FLHU (I)-FSY-DP2 is executed.

That is, the current position value FSY of the car cumulatively added by the microcomputer 8 is added to the counted value D of the counter CT2.
P2 is added and written as FLHU(1) to the address of the RAM 8c corresponding to the first floor.

When writing of data corresponding to 300 mm above the floor is completed, proceed to step 209 and write FLHL (
1)-[FLHD (1)+FLHU (1) The processing of ko÷2 is executed. That is, 300 points above and below the floor on the first floor.
The average value of the level values with +um taken into account is determined, and this is stored at address 1 of the RAM 8c as an accurate level position value.

By repeating the processes from step 200 to step 209 in the same way until the top floor, the floor height value corresponding to the level position of each floor of the N-stop building is written to RAM8c as shown in FIG. 6(a). It will be.

FIG. 8 shows a flowchart for rewriting the floor height value. The outline of the operation is that the current position while stopped within the level is recognized as the starting position, the current position while stopped within the level after traveling is recognized as the stopped position, and the amount of movement, which is the difference between the stopped position and the starting position, is calculated. The error rate is determined from the difference with the floor height value, and if the error rate is outside a predetermined range, the floor height value is multiplied by the error rate to rewrite the floor height value. That is, if the elevator is stopped within the level in steps 101 and 102, FLAGI is set in step 103.
Check the condition. If the level is not stopped in step 102, the process moves to step 115. FLAGl is 1 in step 103
Otherwise, the process moves to step 104 to set the starting position. If FLAG2 is not 1 in step 104, the starting position has not been set, so step 1 is performed to set the starting position.
05, change current position to departure position s syc and departure floor 5FLR
and store it in the RAM8c as
Set FLAG2 to 1. If the elevator is not stopped in step +01, it is assumed that it is running, and in step 107, FLAG 1 is set to 1 in order to recognize the front and back of the elevator. If FLAG 1 is 1 in step 103, it is assumed that the vehicle is stopped within the level after traveling, and the process moves to step 108 to set a stopping position. FLAG2 is 1 in step 108
If not, since the starting position has not been set, the process moves to step 11B without performing the process of calculating the error rate. F in step 108
If LAG2 is 1, follow step 1 to set the stop position.
At step 09, the current position is stored in the RAM 8e as the stop position ESYC and the stop floor EFLR. In step 110, ESYC and s
syc is stored in the RAM 8c as the movement amount DST1, and in step 111, the floor high value difference DST2-FLHL (E
FLR) −FLHL (SFLR) and RAM
Store in 8c.

In step 112, the error rate P-DST is calculated from DSTl and DST2.
I/DST2 is determined, and in step 113 P is outside the predetermined range (P
>1+a or P<1-a). If it is not outside the predetermined range, the process moves to step 115. If it is outside the predetermined range, the floor height value data in FIG. 6 is rewritten in step 114.

FLHD (n)-FLHD (n)XPFLHU (
n)-FLHU (n)xpFLHL (n)-FLH
L (n) Further, in step (116), the state of FLAGl is set to other than 1, for example 0, for the next voice calculation. As described above, the error between the amount of movement of the elevator and the floor height value is grasped every time the elevator runs, and if the error becomes large to a certain extent, the floor height value data is updated.

[Problem to be solved by the invention] In the conventional floor height value rewriting method, even if the floor height value is garbled due to a RAM abnormality, the floor height value is multiplied by the error rate determined from the incorrect floor height value, so it is difficult to obtain an accurate floor height value. There was a problem that I couldn't get it.

This invention was made to solve the above-mentioned 1718 points, and aims to provide an elevator floor position detection device that does not rewrite the floor height value with an abnormal error rate.

[Means for Solving the Problems] An elevator floor position detection device according to the present invention includes a means for generating a pulse proportional to the moving distance of a car, and a means for generating a pulse proportional to the moving distance of a car, and a means for generating pulses proportional to a moving distance of a car, and a means for generating pulses proportional to a moving distance of a car. a position detector provided in the car that generates a position signal when In addition, there is a means for determining the level position of each floor by calculating the data of the lower operating point and storing this in a storage means, and an error in the level position of the moving distance of the car due to changes in pulse amount over time, etc. A means of expressing the amount as an error rate with respect to the level position, by multiplying the error rate by the data of the upper and lower operating points and the level position, the upper,
means for detecting a request to rewrite data at the lower operating point and level position; means for counting the time from the previous rewriting request to the current rewriting request; Equipped with means for adopting a method of rewriting the data of the upper and lower operating points and level position by multiplying by the data of the level position, and means for adopting a method of measuring the floor height value by running the elevator if the time is less than a predetermined time. It is.

[Operation] The elevator floor position detection device according to the present invention determines the error rate that is considered to be abnormal, and in the case of abnormality, prevents the floor height value from being rewritten using the error rate.

[Embodiment of the Invention] This invention considers that errors in elevator movement and floor height values due to changes over time for each lobe do not occur until a certain amount of time has elapsed. If the time is longer than a predetermined time, a rewrite process is performed based on the error rate, and if it is less than a predetermined time, a floor height measurement operation is performed.

An embodiment of the present invention will be described below with reference to the drawings. 1st
．． FIG. 2 is a flowchart showing an example of the operation according to the present invention. As the configuration diagram showing the elevator floor position detection device is shown in FIG. 3, the explanation will be omitted. Further, the operation of the elevator floor position detecting device is the same as that of the conventional example, so a description thereof will be omitted.

Next, the operation of this embodiment will be explained.

FIG. 1 shows a flowchart of writing level position data to RAM according to the present invention. As for the operation, since the same reference numerals are attached to the same parts as in the conventional example, the explanation will be omitted, and only the differences from FIG. 7 will be explained. That is, in step 210, the time between rewrite requests is counted.
Counters Tl and T2 are set to an initial value O upon completion of data writing.

FIG. 2 shows a flowchart for rewriting the floor high price according to the present invention. Regarding the operation, since the same reference numerals are attached to the same operation parts as in the conventional example, the explanation will be omitted, and only the steps 401 and the parts indicated by A, which are different from FIG. 8, will be explained. That is, in step 401, the counter T
1 and T2 are added to count the time between requests to rewrite the floor value. If it is determined in step 113 that the error rate P is outside the predetermined range, it is determined in step 415 whether the time T1 since the previous rewriting is less than the predetermined time. If the time is less than the predetermined time, the floor height value data is rewritten according to the error rate in step 41B, and the initial value 0 is set in the counter T1 in step 417. If it is determined in step 415 that the time T1 is less than the predetermined time, then in step 418 it is determined whether the time T2 from the previous floor height measurement operation is less than the predetermined time. If the time is less than the predetermined time, the floor height measurement operation shown in FIG. 1 is called in step 419. If it is determined in step 418 that the time T2 is less than the predetermined time, then in step 420 a process for disabling restart is called and the floor price data update process is ended.

[Effects of the Invention] As described above, according to the present invention, the time from the previous floor high value rewriting request to the current rewriting request is obtained, and if it is more than a predetermined time, replacement processing is performed based on the error rate, and if it is less than the predetermined time, the floor value is replaced. Since the method is based on high value measurement operation,
Because the floor height value is not rewritten with an abnormal error rate, deterioration of ride comfort due to driving with the wrong floor height value can be avoided, and driving when the device is abnormal can be avoided by making it impossible to restart. This has the effect of providing a highly safe elevator.

[Brief explanation of drawings]

1 and 2 are flowcharts showing the operation of an embodiment of the present invention, FIG. 3 is an overall configuration diagram of the elevator floor position detection device, and FIG. 4 is a detailed diagram of the counting circuit of the elevator floor position detection device. FIG. 5 is a schematic configuration diagram of the microcomputer in FIG. 3, and FIG. 6(a) to (C
) is an explanatory diagram of the RAM, FIG. 7 is a flowchart for writing level position data to the RAM, and FIG. 8 is a flowchart for rewriting floor height values. In the figure, (1) is the basket, (2) is the counterweight,
(3) is the main rope, (4) is the sheave, (5> is the induction motor, (
6> is a pulse generator, (7) is a counting circuit, (8) is a microcomputer, (9) is a floor, (1O) is a plate, and (11) and (12) are position detectors. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A floor position detection device for controlling an elevator running on a plurality of floors by a microcomputer, the device generating a pulse proportional to the moving distance of a car;
A position detector installed in the car that generates a position signal when facing a plate installed in the hoistway corresponding to each floor, a readable and writable storage means, and upper and lower operating points of the position detector for each floor. means for storing in the storage means, means for calculating the level position of each floor by calculating the data of the upper and lower operating points stored in the storage means, and storing this in the storage means;
Means for expressing the amount of error in the moving distance of the car with respect to the level position due to changes over time in the amount of pulses, etc. as an error rate with respect to the level position; Means for detecting a request to rewrite the data of the lower operating point and level position, means for counting the time from the previous rewrite request to the current rewrite request, and if the above time is longer than a predetermined time, the error rate is Means for adopting a method of rewriting the data of the upper and lower operating points and level positions by multiplying the data of the operating points and level positions, and means for adopting the method of measuring floor height values by running the elevator if the above-mentioned time is less than a predetermined time An elevator floor position detection device comprising: