JP2008044680A - Control device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately land a car at a target floor with the displacement of the car due to a variation in the load on the car taken into account. <P>SOLUTION: This control device of an elevator counts pulse signals output from a rotation detector 20, and sets the pulse count value as a reference pulse for each floor position detected by a floor detection part 22. Based on the load on the car 13 detected by a load detection part 26, the reference pulse is corrected and stored in a position storage part 24 with the amount of the displacement of the car produced by the load on the car taken into account. Since the position of the car can be accurately detected by using the reference pulse for each floor stored in the car position storage part 24 during the actual operation of the elevator, the car 13 can be accurately landed at a desired floor at a predetermined speed without a step. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator control device, and more particularly to an elevator control device that initially sets the relationship between a floor position of a car and a pulse.

  FIG. 11 is a block diagram showing the configuration of a conventional elevator control apparatus. Reference numeral 11 in the figure denotes a hoisting machine that rotates by driving a motor. A car 13 and a counterweight 14 move in a lifting manner through the hoistway via a rope 12 wound around the hoisting machine 11.

  A rotation detector 20 such as a pulse encoder is attached to the rotating shaft of the hoisting machine 11. The pulse detector 21 detects a pulse signal output from the rotation detector 20 in conjunction with the operation of the car 13. On the other hand, the floor detection unit 22 detects the floor position of the car 13 based on a signal from a landing sensor (not shown) installed for each floor.

  The reference pulse setting unit 23 counts the pulse signals detected by the pulse detection unit 21 and uses the pulse count value when the floor position of the car 13 is detected by the floor detection unit 22 as a reference for the floor. Set as a pulse. The reference pulse set by the reference pulse setting unit 23 is stored in the car position storage unit 24 for each floor.

  FIG. 12 is a diagram illustrating an example of the car position storage unit 24. In this example, a reference pulse (pulse count value) when the car 13 is moved from the first floor to the second floor, the third floor,... In the UP direction is stored.

  During the elevator operation, the speed control unit 25 detects the position of the car 13 based on the reference pulse stored in the car position storage unit 24 and generates a speed command necessary for movement from the position to the destination floor. And output to the hoisting machine 11.

  By the way, the reference pulse is initially set in accordance with the movement of the elevator car 13 when the elevator is installed. At that time, the load on the car 13 is basically zero and fixed. However, during the actual elevator operation, passengers get on the car 13, so that the rope 12 is expanded and contracted by the loaded load at that time, and the actual position of the car 13 and the position obtained by the reference pulse are There is a gap between them. As a result, there is a problem that the car 13 cannot accurately land on each floor and a so-called step is generated.

  In an elevator, even if such a level difference is slight, for example, it becomes a large obstacle for traveling of a wheelchair, and therefore it is required to accurately land without a level difference.

Conventionally, in Patent Document 1, for example, the number of pulses generated when traveling a predetermined length is set as a reference pulse, and the number of pulses generated while the car actually traveled the predetermined length and the reference It is known that when the pulse does not match, the reference pulse is corrected according to the difference at that time.
JP-A-56-75369

  However, in the above-mentioned Patent Document 1, the load on the car is not considered in correcting the reference pulse. For this reason, there is a problem that if the car position is shifted due to a change in the loaded load of the car, the car cannot be accurately landed on the destination floor.

  The present invention has been made in view of the above points, and provides an elevator control device capable of accurately landing a car on a destination floor in consideration of a shift in car position due to a change in the load of the car. For the purpose.

  The elevator control apparatus according to the present invention is an elevator control apparatus in which a car moves in a hoistway together with a counterweight via a rope wound around a hoisting machine, and is output in conjunction with the operation of the car. The pulse detection means for detecting the pulse signal to be detected and the pulse signal detected by the pulse detection means are counted, and the pulse count value when the car is landed on each floor is set as a reference pulse for the floor. Based on the reference pulse setting means, the load detection means for detecting the load on the car, and the load on the car detected by the load detection means, the reference pulse set by the reference pulse setting means is used. Correction means that corrects the deviation of the car position caused by the load, and a reference pattern that has been corrected by the correction means. Constituted by and a speed control means for landing the target floor the cab by using a scan.

  According to the present invention, it is possible to accurately land the car on the destination floor in consideration of a shift in the car position due to a change in the load on the car.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of an elevator control device according to a first embodiment of the present invention. Reference numeral 11 in the figure denotes a hoisting machine that rotates by driving a motor. A car 13 and a counterweight 14 move in a lifting manner through the hoistway via a rope 12 wound around the hoisting machine 11.

  Here, the elevator control apparatus in the present embodiment includes a pulse detection unit 21, a floor detection unit 22, a reference pulse setting unit 23, a car position storage unit 24, a speed control unit 25, a load detection unit 26, and a pulse correction unit 27. Is provided.

  A rotation detector 20 such as a pulse encoder is attached to the rotating shaft of the hoisting machine 11. The pulse detector 21 detects a pulse signal output from the rotation detector 20 as the hoisting machine 11 rotates. The floor detection unit 22 detects the floor position of the car 13 (that is, the position where the car 13 has landed on each floor) using, for example, a landing sensor (not shown) installed on each floor.

  The reference pulse setting unit 23 counts the pulse signals detected by the pulse detection unit 21 and uses the pulse count value when the floor position of the car 13 is detected by the floor detection unit 22 as a reference for the floor. Set as a pulse.

  In addition, the load detection unit 26 detects the loaded load of the car 13. Specifically, a load sensor (not shown) is installed at the bottom of the car 13, and the load detection unit 26 detects the current load load based on the signal of the load sensor.

  The pulse correction unit 27 includes a first correction table 27a in which a relationship between the load load and the pulse correction value is set in advance. The pulse correction unit 27 reads a pulse correction value corresponding to the loading load of the car 13 detected by the load detection unit 26 from the first correction table 27a, and corrects the reference pulse based on the pulse correction value. . The configuration of the first correction table 27a will be described later with reference to FIG.

  The reference pulse corrected by the pulse correction unit 27 is stored in the car position storage unit 24 in association with the loaded load for each floor. The speed control unit 25 reads a reference pulse corresponding to the loaded load of the car 13 from the car position storage unit 24, and moves the car to a target floor at a predetermined speed based on the reference pulse.

  In such a configuration, a method for initially setting the relationship between the car position and the reference pulse when, for example, installing an elevator will be described.

  First, in a state where the loading load of the car 13 is set to a predetermined value, the car is operated in the UP direction from the lowest floor, and the pulse signal output from the rotation detector 20 is detected by the pulse detector 21 during that time, and the reference is made. This is given to the pulse setting unit 23. The reference pulse setting unit 23 sequentially counts the pulse signals from the pulse detection unit 21, and for each floor position detected by the floor detection unit 22, the pulse count value at that time is used as the reference pulse for the floor. Set as.

  On the other hand, the load on the car 13 is detected by the load detection unit 26 and applied to the pulse correction unit 27. The pulse correction unit 27 reads out a corresponding pulse correction value from the first correction table 27a based on the loaded load of the car 13 detected by the load detection unit 26.

  FIG. 2 is a diagram illustrating an example of the first correction table 27a.

  In this example, the number of pulses obtained when the loading rate is 0% (expressed as Pulse) is used as a reference, and when the loading rate is 50%, the first correction value (expressed as Padd1) is added to or subtracted from the Pulse. It is shown that the second correction value (expressed as Padd2) is added to or subtracted from the Pulse when the loading rate is 100%. The loading rate here refers to the case where the maximum load that can be loaded on the car 13 is 100%. The loading rate of 50% is half of the maximum value, and the loading rate of 0% means no loading. It is.

  The correction values of Padd 1 and 2 are experimentally obtained in advance in consideration of the expansion / contraction rate of the rope 12 with respect to the loaded load. In this case, whether the correction value is added or subtracted depends on the characteristics of the support mechanism such as the rope 12. Normally, when the load is increased, the rope 12 is extended and the car 13 is lowered from a predetermined position, so that the correction value is subtracted from Pulse.

  It should be noted that correction values other than the loading ratio shown in FIG. 2 are interpolated by calculation. That is, for example, when the loading rate is 25%, Padd1 / 2 is obtained as a correction value, and when the loading rate is 75%, (Padd2-Padd1) / 2 is obtained as a correction value.

  When the pulse correction value corresponding to the load on the car 13 is obtained from the first correction table 27a in this way, the pulse correction unit 27 sets the reference pulse setting unit 23 based on the pulse correction value. The corrected reference pulse is corrected. The corrected reference pulse is stored in the car position storage unit 24 in association with the loaded load at that time.

  Such setting processing is repeated by changing the loading load of the car 13. As a result, the car position storage unit 24 stores the reference pulse of each floor in association with the load as shown in FIG.

  FIG. 3 shows an example of corrected reference pulses for a loading rate of 0%, a loading rate of 50%, and a loading rate of 100%. For example, if a reference pulse of “0” on the first floor, “200” on the second floor, and “300” on the third floor is obtained on the basis of a loading ratio of 0%, these reference pulses are corrected at a loading ratio of 50%. The value “10” is added, and the correction value “20” is added to these reference pulses at a loading rate of 100%.

  Note that reference pulses other than the loading rate shown here are interpolated by calculation in the same manner as described above.

  As described above, when the reference pulse for each floor is initially set in the car position storage unit 24, the reference pulse is corrected in consideration of the shift of the car position due to the change in the load on the car 13. Thus, thereafter, during actual elevator operation, the speed control unit 25 can accurately detect the current car position using the reference pulse of each floor corresponding to the loaded load of the car 13 at that time. The car 13 can be accurately landed on the destination floor at a predetermined speed without a step. During operation, the speed control unit 25 is provided with information on the loaded load of the car 13 detected by the load detecting unit 26, and a reference pulse corresponding to the current loaded load is stored in the car position. Read from unit 24.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  In the second embodiment, the reference pulse is corrected in consideration of the load on the car and the driving direction.

  FIG. 4 is a block diagram showing a configuration of an elevator control device according to the second embodiment of the present invention. The basic configuration is the same as that in FIG. 1 in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  The difference from the configuration of FIG. 1 is that an operation direction determination unit 28 is added to the apparatus, and a pulse correction unit 27 is provided with a second correction table 27b instead of the first correction table 27a. That is. The driving direction determination unit 28 determines the driving direction of the car 13 based on a driving command given from the outside. The second correction table 27b stores a pulse correction value for each driving direction.

  FIG. 5 is a diagram showing an example of the second correction table 27b.

  Based on the number of pulses (represented as Pulse) obtained when the loading rate is 0%, pulse correction values when the loading rate is 50% and when the loading rate is 100% are stored for each operation direction. In the example of FIG. 5, when the loading rate is 50%, the first correction value (expressed as Padd1) is added to or subtracted from the Pulse in the upward operation, and the third correction value ( It is shown that addition and subtraction is expressed as “Padd3”. Further, when the loading rate is 100%, the second correction value (expressed as Padd2) is added to or subtracted from the Pulse in the upward operation, and the fourth correction value (Padd4 is expressed as the Pulse in the downward operation. ) Is added and subtracted. The loading rate here refers to the case where the maximum load that can be loaded on the car 13 is 100%. The loading rate of 50% is half of the maximum value, and the loading rate of 0% means no loading. It is.

  The correction values of Padd 1 to 4 are experimentally obtained in advance for each operation direction in consideration of the expansion / contraction rate of the rope 12 with respect to the load. In this case, whether the correction value is added or subtracted depends on the characteristics of the support mechanism such as the rope 12. Normally, when the load is increased, the rope 12 is extended and the car 13 is lowered from a predetermined position, so the correction value is subtracted from Pulse.

  Note that correction values other than the loading ratio shown in FIG. 5 are interpolated by calculation. That is, for example, Padd1 / 2 is determined as a correction value for an upward operation at a loading rate of 25%, and Padd3 / 2 is determined as a correction value for a downward operation. Further, if the loading ratio is 75% and the operation is in the upward direction, (Padd2-Padd1) / 2 is determined as a correction value, and if the operation is in the upward direction, (Padd4-Padd3) / 2 is determined as the correction value.

  In such a configuration, the loading load of the car 13 detected by the load detection unit 26 and the driving direction of the car 13 determined by the driving direction determination unit 28 are given to the pulse correction unit 27. The pulse correction unit 27 obtains a pulse correction value corresponding to the loading load and the driving direction of the car 13 from the second correction table 27b shown in FIG. 5, and corrects the reference pulse based on the pulse correction value. Store in the car position storage unit 24. Such setting processing is repeated by changing the loading load and the driving direction of the car 13.

  Thus, thereafter, during the operation of the elevator, the speed control unit 25 accurately detects the current car position using the reference pulse of each floor corresponding to the loaded load and the driving direction of the car 13 at that time, The car 13 can be accurately landed at a predetermined speed on the destination floor without a step. During operation, the speed control unit 25 is given the load of the car 13 detected by the load detection unit 26 and the information of the operation direction determination unit 28, so that the current load load and the operation direction are indicated. Correspondingly, the reference pulse is read from the car position storage unit 24.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  In the third embodiment, a rotation detector is installed on a rotating body that is directly connected to the movement of the car. Specifically, the rotating body is a governor.

  FIG. 6 is a block diagram showing a configuration of an elevator control device according to the third embodiment of the present invention. The basic configuration is the same as that in FIG. 1 in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  The difference from the configuration of FIG. 1 is that a rotation detector 30 is installed in the governor 31. The governor 31 is a device for adjusting the driving speed of the car 13, and is called a governor. A car 13 is attached to the governor 31 via a governor rope 32, and rotates with the operation of the car 13. A rotation detector 30 is attached to the rotating shaft of such a speed governor 31. The rotation detector 30 includes a pulse encoder or the like, and outputs a pulse signal as the speed governor 31 rotates.

  The pulse signal output from the rotation detector 30 is detected by the pulse detector 21 and supplied to the reference pulse setting unit 23. On the other hand, the loading load of the car 13 detected by the floor detection unit 22 is given to the reference pulse setting unit 23.

  The reference pulse setting unit 23 sequentially counts the pulse signals from the pulse detection unit 21, and for each floor position detected by the floor detection unit 22, the pulse count value at that time is used as the reference pulse for the floor. Set as. The reference pulse of each floor set by the reference pulse setting unit 23 is corrected by the pulse correction unit 27 according to the loaded load of the car 13 in the car position storage unit 24 as in the first embodiment. Remembered. Such a reference pulse setting process is repeated by changing the loading load of the car 13. Thereby, the car position storage unit 24 stores the reference pulse of each floor in association with the loaded load.

  As described above, even when the rotation detector 30 is installed in the governor 31 and the pulse signal output from the rotation detector 20 is counted to set the reference pulse for each floor, the load on the car 13 can be increased. By correcting the reference pulse accordingly, the same effect as in the first embodiment can be obtained. Further, by installing the rotation detector 30 in the governor 31, it is possible to reliably obtain a pulse signal that matches the movement of the car 13, so that the car position can be detected more accurately.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.

  The fourth embodiment is a combination of the second embodiment and the third embodiment. That is, in the configuration in which the car position is detected using a rotation detector installed on a rotating body that is directly connected to the movement of the car, the driving direction of the car is taken into account for correction of the reference pulse.

  FIG. 7 is a block diagram showing a configuration of an elevator control device according to the fourth embodiment of the present invention. In FIG. 7, a driving direction determination unit 28 is added to the configuration of FIG. 6, and a second correction table 27b is provided in the pulse correction unit 27 instead of the first correction table 27a.

  The driving direction determination unit 28 determines the driving direction of the car 13 based on a driving command given from the outside. As shown in FIG. 5, the second correction table 27b stores a pulse correction value for each driving direction. The pulse correction unit 27 reads out a pulse correction value corresponding to the loading load and operation direction of the car 13 from the second correction table 27b, and corrects the reference pulse based on the pulse correction value.

  In such a configuration, the pulse signal output from the rotation detector 30 is detected by the pulse detector 21 and provided to the reference pulse setting unit 23. On the other hand, the loading load of the car 13 detected by the floor detection unit 22 is given to the reference pulse setting unit 23.

  The reference pulse setting unit 23 sequentially counts the pulse signals from the pulse detection unit 21, and for each floor position detected by the floor detection unit 22, the pulse count value at that time is used as the reference pulse for the floor. Set as. The reference pulse of each floor set by the reference pulse setting unit 23 is corrected by the pulse correction unit 27 according to the loaded load and the driving direction of the car 13 in the same manner as in the second embodiment, and the car position It is stored in the storage unit 24.

  Such a reference pulse setting process is repeated by changing the loading load and operation direction of the car 13. As a result, the car position storage unit 24 stores the reference pulse of each floor in association with the loaded load and the driving direction.

  As described above, even when the rotation detector 30 is installed in the governor 31 and the pulse signal output from the rotation detector 30 is counted to set the reference pulse for each floor, By correcting the reference pulse in accordance with the driving direction, the same effect as in the second embodiment can be obtained.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described.

  In the fifth embodiment, the car position is detected using two rotation detectors.

  FIG. 8 is a block diagram showing a configuration of an elevator control device according to the fifth embodiment of the present invention. The basic configuration is the same as that in FIG. 1 in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  1 differs from the configuration of FIG. 1 in that a rotation detector 30 is provided separately from the rotation detector 20, and a pulse comparison unit 40 that compares the pulse outputs of the two rotation detectors 20 and 30 is provided. It is that.

  The rotation detector 20 outputs a pulse signal as the hoisting machine 11 rotates. On the other hand, the rotation detector 30 is used in the third embodiment, and outputs a pulse signal as the speed governor 31 rotates. A car 13 is attached to the governor 31 via a governor rope 32 and rotates as the car 13 is operated.

  The two rotation detectors 20 and 30 individually output pulse signals in conjunction with the operation of the car 13. The pulse comparison unit 40 compares the pulse signals output from the two rotation detectors 20 and 30 and outputs the comparison result to the pulse detection unit 21.

  Specifically, for example, the number of pulses per unit time obtained from the rotation detector 20 and the number of pulses per unit time obtained from the rotation detector 30 are averaged and output. Alternatively, only one of the rotation detectors 20 and 30 may be selected and output. For example, normally, a relatively accurate pulse signal from the rotation detector 30 is selected and output, and when the rotation detector 30 malfunctions for some reason (for example, no pulse is output), the rotation detector 20 It may be switched to a pulse signal.

  Further, when the error between the number of pulses obtained from the rotation detector 20 and the number of pulses obtained from the rotation detector 30 is greater than or equal to a predetermined value, the operation can be stopped to deal with an abnormal state.

  The pulse detector 21 detects the pulse signal output as the comparison result of the pulse comparator 40 and supplies it to the reference pulse setting unit 23. On the other hand, the loading load of the car 13 detected by the floor detection unit 22 is given to the reference pulse setting unit 23.

  The reference pulse setting unit 23 sequentially counts the pulse signals from the pulse detection unit 21, and for each floor position detected by the floor detection unit 22, the pulse count value at that time is used as the reference pulse for the floor. Set as. The reference pulse of each floor set by the reference pulse setting unit 23 is corrected by the pulse correction unit 27 according to the loaded load of the car 13 in the car position storage unit 24 as in the first embodiment. Remembered. Such a reference pulse setting process is repeated by changing the loading load of the car 13. Thereby, the car position storage unit 24 stores the reference pulse of each floor in association with the loaded load.

  According to such a configuration, in addition to the same effects as those of the first embodiment, the use of the two rotation detectors 20 and 30 enables more accurate detection of the car position. The 13 landing accuracy can be further increased.

  The configuration of the fifth embodiment may be combined with the second embodiment to correct the reference pulse in consideration of the driving direction of the car 13.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described.

  In each of the above embodiments, a table in which a correction value is set in advance when the reference pulse is corrected is used. In the sixth embodiment, the correction value is calculated based on a predetermined arithmetic expression. .

  FIG. 9 is a block diagram showing the configuration of the elevator control apparatus according to the sixth embodiment of the present invention. The basic configuration is the same as that in FIG. 1 in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  A difference from the configuration of FIG. 1 is that a pulse calculation correction unit 50 is provided in place of the pulse correction unit 27. The pulse calculation correction unit 50 calculates a pulse correction value corresponding to the loaded load of the car 13 detected by the load detection unit 26 using the following equation of motion of the spring.

F = k · x (1)
F is a force and is expressed by load × gravity acceleration. k is a spring constant and corresponds to the expansion / contraction rate of the rope 12 here. x is a length, which corresponds to a correction value here. Therefore, a pulse correction value corresponding to the current loaded load is obtained from the above equation (1) as x = F / k.

  The pulse calculation correction unit 50 corrects the reference pulse of each floor using the pulse correction value thus obtained and stores it in the car position storage unit 24. This is repeated by changing the load on the car 13. Thereby, the car position storage unit 24 stores the reference pulse of each floor in association with the loaded load.

  Thus, if the correction value corresponding to the loaded load of the car 13 is obtained by calculation, the trouble of searching the table can be saved each time, and the correction value for the current loaded load can be accurately calculated in real time. There is an advantage that the reference pulse can be corrected.

  The configuration of the sixth embodiment may be combined with the second embodiment to correct the reference pulse in consideration of the driving direction of the car 13. In this case, the above equation (1) is used by further multiplying by a coefficient value corresponding to the driving direction of the car 13.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described.

  In the seventh embodiment, the pulse correction value is limited so as not to exceed a predetermined limit value.

  FIG. 10 is a block diagram showing a configuration of an elevator control device according to the seventh embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the structure of FIG. 9 in the said 6th Embodiment, and the description shall be abbreviate | omitted.

  A difference from the configuration of FIG. 9 is that a pulse correction limit unit 51 is added. The pulse correction limit unit 51 has a function of suppressing the pulse correction value obtained by the pulse calculation correction unit 50 within a limit value range when the pulse correction value exceeds a predetermined limit value.

  According to such a configuration, even if an abnormal pulse correction value exceeding the limit value is output from the pulse calculation correction unit 50 due to, for example, a calculation error of the pulse calculation correction unit 50, it is within the limit value range. By suppressing the reference pulse, it is possible to prevent the reference pulse from being largely erroneously corrected.

  In addition, not only the pulse calculation correction unit 50 but also the output of an inappropriate pulse correction value can be suppressed when the load detection unit 26 malfunctions for some reason.

  Note that a configuration in which no correction is performed when an abnormal pulse correction value exceeding the limit value is output may be used. In this case, the deviation of the car position cannot be eliminated, but it is preferable that the correction is not performed rather than the landing accuracy of the car 13 is significantly lowered by an inappropriate reference pulse.

  The pulse correction limit unit 51 may be applied to a configuration using a correction table as in the other embodiments. In this way, when an inappropriate pulse correction value is output due to some malfunction, it can be prevented.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various forms can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

FIG. 1 is a block diagram showing a configuration of an elevator control device according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a first correction table provided in the elevator control apparatus according to the embodiment. FIG. 3 is a diagram illustrating an example of a car position storage unit provided in the elevator control device according to the embodiment. FIG. 4 is a block diagram showing a configuration of an elevator control device according to the second embodiment of the present invention. FIG. 5 is a diagram illustrating an example of a second correction table provided in the elevator control device according to the embodiment. FIG. 6 is a block diagram showing a configuration of an elevator control device according to the third embodiment of the present invention. FIG. 7 is a block diagram showing a configuration of an elevator control device according to the fourth embodiment of the present invention. FIG. 8 is a block diagram showing a configuration of an elevator control device according to the fifth embodiment of the present invention. FIG. 9 is a block diagram showing the configuration of the elevator control apparatus according to the sixth embodiment of the present invention. FIG. 10 is a block diagram showing a configuration of an elevator control device according to the seventh embodiment of the present invention. FIG. 11 is a block diagram showing the configuration of a conventional elevator control apparatus. FIG. 12 is a diagram showing an example of a car position storage unit provided in a conventional elevator control device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Hoisting machine, 12 ... Rope, 13 ... Ride car, 14 ... Counter weight, 20 ... Rotation detector, 21 ... Pulse detection part, 22 ... Floor detection part, 23 ... Reference pulse setting part, 24 ... Car position Storage unit 25 ... Speed control unit 26 ... Load detection unit 27 ... Pulse correction unit 27a ... First second correction table 27b ... Second correction table 28 ... Running direction determination unit 30 ... Rotation Detectors 31 ... governor 32 ... governor rope 40 ... pulse comparison unit 50 ... pulse calculation correction unit 51 ... pulse correction limit unit

Claims (8)

In an elevator control device in which a car moves in a hoistway together with a counterweight via a rope wound around a hoisting machine,
Pulse detection means for detecting a pulse signal output in conjunction with the operation of the car;
Reference pulse setting means for counting pulse signals detected by the pulse detection means, and setting a pulse count value when the car has landed on each floor as a reference pulse for the floor;
Load detecting means for detecting the load of the car,
Correction means for correcting the reference pulse set by the reference pulse setting means in consideration of the deviation of the car position caused by the loading load based on the loading load of the car detected by the load detection means;
An elevator control apparatus comprising: speed control means for landing the car on a destination floor using a reference pulse corrected by the correction means. A rotation detector installed in the hoisting machine,
2. The elevator control device according to claim 1, wherein the pulse detection means detects a pulse signal output from the rotation detector as the hoisting machine rotates. Equipped with a rotation detector installed on the rotating body directly connected to the movement of the car,
2. The elevator control device according to claim 1, wherein the pulse detection means detects a pulse signal output from the rotation detector as the rotating body rotates. Driving direction determination means for determining the driving direction of the car is provided,
2. The elevator control apparatus according to claim 1, wherein the correction means corrects the reference pulse in consideration of the driving direction of the car determined by the driving direction determination means. A first rotation detector installed in the hoist and a second rotation detector installed in a rotating body directly connected to the movement of the car;
Pulse comparison means for comparing the pulse signal output from the first rotation detector and the pulse signal output from the second rotation detector;
2. The elevator control device according to claim 1, wherein the pulse detection means detects a pulse signal output as a comparison result from the pulse comparison means. A table means in which the relationship between the loading load and the pulse correction value is set in advance,
2. The elevator control device according to claim 1, wherein the correction means reads out a pulse correction value corresponding to the load on the car from the table means, and corrects the reference pulse based on the pulse correction value. .   2. The elevator control device according to claim 1, wherein the correction means obtains a pulse correction value corresponding to the load on the car based on a predetermined arithmetic expression.   2. The elevator control apparatus according to claim 1, further comprising limit means for setting a predetermined limit value to the corrected reference pulse obtained by the correction means.

Images