JPH085601B2 - Elevator floor position detector - Google Patents

Description

The present invention relates to an elevator floor position detecting device,
In particular, the present invention relates to a floor position detecting device for an elevator, which is suitable for controlling the elevator using a microcomputer.

[Prior Art] FIG. 3 shows a schematic configuration of an elevator floor position detecting device disclosed in Japanese Patent Laid-Open No. 60-197572, which controls an elevator running on a plurality of floors by a microcomputer. . In FIG. 3, reference numeral 1 is an elevator car, 2 is a counterweight, 3 is a rope wound around a sheave 4, and a car 1 and a counterweight 2 are connected to both hanging ends of the rope 3, respectively. ing. 5 is an electric motor for driving the sheave 4, 6 is a pulse generator for generating a pulse proportional to the moving distance of the car 1 from the rotation of the electric motor 5, 7 is a counting circuit for counting the pulses from the pulse generator 6, and 8 is A microcomputer that takes in a signal from the counting circuit 7 and performs a predetermined arithmetic processing, as shown in FIG.
It is composed of a CPU 8a, a ROM 8b, a RAM 8c, an input port 8d and an output port 8e. 9 is a floor, 10 is a plate provided in the hoistway corresponding to each floor, 11 and 12 are position detectors provided in the car 1, and when the car 1 reaches the level position of each floor, the output signal 11a , 12a are sent to the counting circuit 7 and the microcomputer 8.

FIG. 4 shows a concrete configuration of the counting circuit 7 in FIG. 3, which is provided with counters CT1 and CT2 composed of a 4-bit binary circuit, and a pulse generator 6 is provided at the T terminal of this counter CT1. The output pulse 6a from is directly applied, and is also applied to the T terminal of the counter CT2 via the NAND circuit NAND1 and the NOT circuit NOT1. , The traveling pulses of the car 1 during each operation cycle of the microcomputer 8 are counted and stored, and the counted value is taken into the CPU 8a via the input port 8d in the next taking process. The counting circuit 7 includes RS flip-flops (hereinafter simply referred to as flip-flops) FF1 and FF2, and the output terminals of the NAND circuits NAND2 and NAND3 are connected to the set terminals S of the flip-flops FF1 and FF2, respectively. NOR circuit NO that takes the logical sum of the output signals 11a and 12a of the position detectors 11 and 12
R1 is provided and the output signal of this NOR circuit NOR1 is output to the knot circuit NO.
It is used as one input of the NAND circuit NAND2 via T3, and the signal obtained from the NOT circuit NOT3 is input to the other input of this NAND circuit NAND2.
The signal extracted through the time constant circuit composed of C1 is added, and the signals obtained through the knot circuit NOT3 or the NOT circuit NOT2 and the time constant circuit are input to the NAND circuit NAND3 through the NOT circuits NOT4 and NOT5, respectively. To add as. This makes the NAND circuit
When the flip-flops FF1 and FF2 are set by the outputs of NAND2 and NAND3, the counter CT2 is stopped. In other words, the counter CT1 is the count value during each operation cycle period, while the counter CT1 is
In (2), the count operation up to the operation of the position detector can be accurately obtained by stopping the counting operation each time the output signal of the position detector 11 or 12 rises or falls.

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

That is, the position detectors 11 and 12 are for detecting the level position of the floor (for example, 10 mm before the floor), but as an actual operating point, the position detector 11 is 300 mm before the floor of each floor. It keeps moving up to 10mm. The position detector 12 continues to operate from 10 mm in front of each floor to 300 mm in floor passage. Therefore, this conventional technique is based on each floor (I
The floor value of 300 mm below the floor) is the lower operating point data F
LHD (I), a level value indicating 300 mm above the floor of each floor (I floor) is written to RAM8c of the microcomputer 8 as upper operating point data FLHU (I), and basically, based on these values, [FLHD (I) + FLHU (I)] ÷ 2 to calculate the level position data of each floor, that is, the center of the common operating range (10 mm below the floor to 10 mm above the floor) of the position detectors 11 and 12, and obtain this. Modify the selector by storing it in RAM8c,
This is provided for calculation of the remaining distance.

Next, write the level position data of each floor
A description will be given based on the flowchart in the figure.

Before explaining the operation, FIG. 6 will be described. FIG. 6 (a) shows each floor of N stops, for example, below the floor of the floor.
The level value FLHD showing 300 mm corresponds to from the lowest floor to the highest floor, and FLHD (0) to FLHD from 0 to N-1 of RAM8c
FIG. 6B shows the level value FLHU indicating 300 mm above the floor from the lowest floor to the highest floor from the address 0 of RAM8c to N-. FLHU at No. 1
(0) to FLHU (N-1),
Further, FIG. 6 (c) shows level position data calculated by taking the average value of the values of FIGS. 6 (a) and (b) from FLHL (0) to FLHL (N) from address 0 to address N-1 of RAM8c. -1) is stored as.

First, the car 1 is stopped at the bottom floor. At this time, the level position data corresponding to the lowest floor is [FLHD (0) + FLHU
(0)] / 2, and the level position data obtained as a result is FLHL (0) as shown in FIG.
Store at address 0 of c.

Next, the car 1 is moved up and the traveling distance of the car is measured by counting the pulses generated from the pulse generator 6 with the traveling of the car by the counters CT1 and CT2, and the writing arithmetic processing program of the microcomputer 8 is started. By the input processing shown in the procedure 200 of FIG. 7 accompanying the above, the count value DP1 of the counter CT1 and the count value DP2 of the counter CT2 are fetched into the microcomputer 8, and the reset signal RESET is sent from the microcomputer 8 in the next procedure 201. Each counter CT
1, CT2 is reset and flip-flops FF1, F
Reset F2. When this reset process is completed, the routine proceeds to the next step 202, where it is determined whether or not the car 1 is traveling upward, and if "NO", the write process is not performed. Further, when it is determined that the vehicle is climbing, in the next step 203,
It is determined whether or not the signal 11a of the position detector 11 has risen, that is, whether or not the lower operating point has been reached, and the result is "YE
If it is "S", the microcomputer 8 shifts to the step 204, and it is set to 300 mm below the floor of the floor, that is, the floor address of the RAM 8c at which the value corresponding to the lower operating point should be written.
+1 processing, and in the next step 205, FLHD
(I) ← Perform FSY + DP2 processing. That is, the count value D of the counter CT2 fetched in each operation cycle of the microcomputer 8
P2 and the car current position FSY obtained by cumulatively adding the mileage of the car before this are added, and this is written as FLHD (I) in the address of the RAM 8c corresponding to the I floor.

In addition, in step 206, the FSY
← The process of FSY + DP1 is performed, the count value DP1 of the counter CT1 is taken in every operation 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 “NO”, then step 2
The process moves to 07 and it is determined whether or not the signal 12a of the position detector 12 has fallen. That is, it is determined whether or not the upper operating point has been reached. If "NO" at this time, the process proceeds to step 206 to perform the cumulative addition process of the current car value. If it is determined to be “YES”, the process proceeds to step 208 and FLHU (I) ← FSY + DP.
Execute the process of 2.

That is, the count value DP2 of the fetched counter CT2 is added to the current position value FSY of the car cumulatively added by the microcomputer 8, and this is set as FLHU (I), which corresponds to the floor I of the RAM 8c.
Write in the address.

When the writing of the data corresponding to the upper operating point 300 mm above the floor, that is, the upper operating point, is completed, the process proceeds to step 209, and FLHL (I) ← [FLHD (I) + FLHU (I)] / 2 The process is executed. That is, the average value of the level values indicating 300 mm above and below the floor on the I floor is obtained, and this is stored as accurate level position data in the I address of the RAM 8c.

By repeating the processing from step 200 to step 209 to the uppermost floor in the same manner, the upper and lower operating point data and level position data of each floor of the N-stopped building are written in the RAM 8c as shown in FIG. It will be. Hereinafter, the upper and lower operating point data and the level position data are collectively referred to as a floor height value.

FIG. 8 shows a flowchart of rewriting when the floor height value is deviated. The outline of the operation is to recognize the current position when the vehicle is stopped within the level as the starting position, recognize the current position where the vehicle is stopped within the level after traveling as the stopping position, and determine the movement amount that is the difference between the stopping position and the starting position. The error rate is calculated from the floor height difference (height between the departure floor and the stop floor), and if the error rate is outside the 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, the state of FLAG1 is checked in step 103. If the level is not stopped in step 102, the process proceeds to step 115. If FLAG1 is not 1 in step 103, the process proceeds to step 104 to set the starting position. FLAG2 is 1 in step 104
If it is not, the departure position has not been set and the current position is set in step 105 in order to set the departure position SSYC and departure floor S
Store as FLR in RAM8c and FLA in step 106 for setting recognition
Set 1 to G2. If the elevator is not stopped in step 101, FLAG1 is set to 1 in step 107 in order to recognize that the elevator is running and before and after running. FLAG1 is 1 in step 103
If so, it is determined that the vehicle is stopped within the level after traveling, and the process proceeds to step 108 to set the stop position. FLAG in step 108
If 2 is not 1, since the starting position has not been set, the process for obtaining the error rate is not performed and the process proceeds to step 116. FL in step 108
If AG2 is 1, the current position is stored in the RAM 8c as the stop position ESYC and the stop floor EFLR in step 109 to set the stop position. In step 110, the difference between ESYC and SSYC is set as the movement amount DST1 in RAM
Stored in 8c, and in step 111, floor height difference DST2 = FLHL (EFLR) −FLHL (SFLR) from EFLR and SFLR based on floor height in FIG.
Is stored in RAM8c. In step 112, the error rate P = DST1 / DST2 is calculated from DST1 and DST2, and in step 113 P is outside the predetermined range (P
> 1 + α or P <1-α) is determined. If it is not outside the predetermined range, the process proceeds to step 115. If it is outside the predetermined range, the floor height value in FIG. 6 is rewritten in step 114.

FLHD (n) = FLHD (n) × P FLHU (n) = FLHU (n) × P FLHL (n) = FLHL (n) × P where n = 0 to the number of floors-1.

In step (115), the state of FLAG2 is set to other than 1, for example, 0 for the next calculation. In step (116), the state of FLAG1 is set to a value other than 1, for example, 0 for the next calculation.
As described above, the error between the moving amount of the elevator and the floor height value is grasped every time the vehicle travels, and the floor height value is updated when the error increases to some extent.

[Problems to be Solved by the Invention] In the conventional floor height rewriting method, the floor height value is multiplied by an error rate obtained from an incorrect floor height value even if the floor height value changes due to an abnormality in RAM. There was a problem that was not obtained.

The present invention has been made to solve the above problems, and an object thereof is to obtain a floor position detecting device for an elevator that does not rewrite the floor height value with an abnormal error rate.

[Means for Solving the Problem] The floor position detecting means for an elevator according to the present invention is a floor position detecting device for controlling an elevator running on a plurality of floors by a microcomputer, and is for moving a car. It shows that the traveling position of the car is at a predetermined distance from the floor above and below each floor based on the signal from the pulse generator that generates the moving distance pulse proportional to the distance and the position detector installed in the car. The upper and lower operating point signal generating means for generating the upper operating point signal and the lower operating point signal, and the upper and lower operating point signals for the readable and writable storage means for storing the data necessary for the microcomputer to perform control. The cumulative value of the moving distance pulse when it is generated is stored as the upper and lower operating point data of each floor, and the average value of the upper operating point data and the lower operating point data is stored. Seeking,
Corresponding to the writing means to be stored in the storage means as the level position data of each floor, the movement amount obtained from the stop position and the starting position every time the elevator travels in the normal operation, and the stop position stored in the storage means. The error rate that is the ratio of the difference between the level position data and the level position data corresponding to the starting position is calculated. If this error rate is outside the predetermined range, it is stored, and the lower operating point data and the level position data are stored. And a rewriting means for rewriting to a value obtained by multiplying the error rate by counting the time from the previous rewriting request of the upper and lower operating point data and the level position data to the present rewriting request, and if the above time is a predetermined time or more, rewriting The upper and lower operating point data and the level position data are rewritten by means, and if the above time is less than a predetermined time, the writing means moves up and down. It is intended to update the storage of data and level position data.

[Operation] In the present invention, the time from the previous rewriting request of the upper and lower operating point data and the level position data to the present rewriting request is obtained, and if the time is more than the predetermined time, the upper and lower operating point data and the level position are determined by the error rate. The data is rewritten, and if it is less than the predetermined time, it is rewritten by the floor height measurement operation, so the floor value, that is, the upper and lower operating point data and the level position data are rewritten with the error rate calculated based on the abnormal RAM data. Never.

[Embodiment] In the present invention, for example, the error between the amount of movement of the elevator that has changed due to the change with time of the rope and the floor height value does not occur until a certain amount of time elapses. To find the time to
If the time is longer than a predetermined time, the floor height value is rewritten according to the error rate, and if the time is shorter than the predetermined time, all the position data are newly updated.

An embodiment of the present invention will be described below with reference to the drawings. First
1, FIG. 2 is a flow chart showing an operation example according to the present invention. A structural diagram showing the floor position detecting device of the elevator uses FIG. 3, and therefore its explanation is omitted. Further, the operation of the floor position detecting device of the elevator is the same as that of the conventional example, and therefore its explanation is omitted.

 Next, the operation of this embodiment will be described.

FIG. 1 shows a flow chart of writing level position data to a RAM according to the present invention. With respect to the operation, the same operation parts as those in the conventional example are denoted by the same reference numerals, and therefore the description thereof will be omitted and only the difference from FIG. 7 will be described. That is, in step 210, the counters T1 and T2 for counting the time between rewrite requests are set to the initial value 0 at the end of data writing.
Set to.

FIG. 2 shows a flowchart for rewriting the floor price according to the present invention. With respect to the operation, the same reference numerals are given to the same operation parts as those of the conventional example, and therefore the description thereof will be omitted and only the parts indicated by steps 401 and A different from FIG. That is, in step 401, counters T1 and T2
Is added and the time between rewrite requests for the floor price is counted. If it is determined in step 113 that the error rate P is outside the predetermined range, then in step 415 it is determined whether the time T1 from the previous rewriting is less than the predetermined time. If not less than the predetermined time, step 416
At step 417, the floor height value is rewritten according to the error rate, and the initial value 0 is set to the counter T1 at step 417. If it is determined in step 415 that the time T1 is less than the predetermined time, in step 418 it is determined whether the time T2 from the previous floor height measurement operation is less than the predetermined time. If it is not 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, in step 420 the process for disabling the restart is called and the process of updating the floor price data ends.

The process of step 416 is the same as the process of step 114 in FIG.

Also, by making it impossible to restart in step 420,
Avoid running when the equipment is abnormal. Therefore, according to this embodiment, a highly safe elevator can be obtained.

[Effects of the Invention] As described above, according to the present invention, the time from the previous rewriting request of the upper and lower operating point data and the level position data to the present rewriting request is obtained. , The lower operating point data and the level position data are rewritten, and if the time is less than the predetermined time, it is rewritten by the floor height measurement operation. There is an effect that it is possible to avoid deterioration of riding comfort due to traveling at an incorrect floor height value without rewriting with the error rate calculated in.

[Brief description 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 an elevator floor position detecting device, and FIG. 4 is a detail of a counting circuit of the elevator floor position detecting device. And FIG. 5 is a schematic configuration diagram of the microcomputer in FIG. 3, FIG.
7C is an explanatory diagram of the RAM, FIG. 7 is a flowchart for writing the level position data to the RAM, and FIG. 8 is a flowchart for rewriting the floor height value. In the figure, 1 ... basket, 2 ... counterweight, 3 ...
Rope, 4 ... Sheave, 5 ... Induction motor, 6 ... Pulse generator, 7 ... Counting circuit, 8 ... Microcomputer, 9 ... Floor, 10 ... Plate, 11, 12 ... Position detection It is a vessel. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A floor position detecting device for controlling an elevator traveling on a plurality of floors by a microcomputer, the pulse generating means generating a moving distance pulse proportional to a moving distance of a car, and the car. The upper and lower operating point signals and the lower operating point signal indicating that the traveling position of the car is a point at a predetermined distance from the floor above and below the floor based on the signal from the position detector provided in The cumulative value of the moving distance pulse when the upper and lower operating point signals are generated in the operating point signal generating means and the readable / writable storage means for storing the data necessary for the microcomputer to control is shown at each floor. It is stored as the upper and lower operating point data of the floor, and the average value of the upper operating point data and the lower operating point data is calculated and used as the level position data of each floor. The writing means to be stored in the storage means, the amount of movement obtained from the stop position and the starting position each time the elevator travels in normal operation, and the level position data corresponding to the stop position stored in the storage means. And an error rate which is a ratio with the difference value of the level position data corresponding to the starting position, and if this error rate is outside a predetermined range, it is stored and the lower operating point data and the level position data have the above error. And a rewriting means for rewriting to a value obtained by multiplying the rate by counting the time from the previous rewriting request of the upper and lower operating point data and the level position data to the present rewriting request. The upper and lower operating point data and level position data are rewritten by the A floor position detecting device for an elevator, characterized by updating storage of data and level position data.