JP2605990B2 - Elevator control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device, and more particularly to an elevator control device that controls an elevator using a weighing device.

[0002]

2. Description of the Related Art In recent years, with respect to elevator control devices, electronic and electric control devices as sub-systems have been improved due to the development of microelectronics and power electronics. The performance of machines and mechanisms has also been improved due to the development of mechatronics.However, high-efficiency worm gears, helical gears, etc. have been adopted for elevator hoists to further promote power and energy savings. It has become to. Elevators using these hoisting machines are equipped with a weighing device to control the load on the elevator car side at the time of starting, running, and landing, that is, from no load to rated load with high performance.

The function of this weighing device is to first detect the load in the car, add the load equivalent to the motor torque in advance, and provide the ride comfort at the time of starting, running, landing, and landing. The goal is to improve accuracy. The scale that plays this role is called a start scale. Next, the second is to manage the operation of the elevator according to the load in the car. For example, if passengers are overloaded in the elevator car, this is warned to the passengers, and a change in the car assignment in the multi-cars or through the hall according to the percentage of passengers in the car. A balance that plays this role is called a management balance.

As a conventional elevator control apparatus of this type, there is a technique disclosed in Japanese Patent Laid-Open Publication No. Hei 1-331385 . FIG. 5 is an overall configuration diagram showing a conventional elevator control device.

In the drawing, 11 is a sheave, 12 is a rope wound around the sheave 11, 13 is a counterweight which is a counterweight, and 14 is a rope via a shackle spring (not shown) at the tip of the rope 12. The car frame connected to 12, 15 is a car room located in the car frame 14, 16 is an anti-vibration rubber supporting the car room 15, 17 is an anti-vibration rubber 16
And a weighing device arranged in parallel, and outputs a predetermined signal 17a. Reference numeral 18 denotes a cable such as a power line or a signal line that supplies power to the elevator car and transmits / receives a signal, 19 denotes a driving motor for driving the sheave 11, 20 denotes a power converter for driving the motor 19, and 21 denotes control and control of the elevator. It is a microcomputer that forms the core of operation management, and outputs a torque command 21 a to the power converter 20. Reference numeral 22 denotes a top floor, reference numeral 23 denotes a center floor which is a center position of the entire ascent / descent process, and reference numeral 24 denotes a bottom floor.

In this type of elevator control device, the weight of the cab 15 and the weight of passengers and luggage in the cab 15 are detected by the weighing device 17. This weighing device 17 usually has a plurality of contacts, and when a passenger rides in the car room 15 and the vibration-proof rubber 16 bends, some of the contacts are turned on in accordance with the amount of bending. . These multiple contacts are, for example, 25% of the rated load capacity (rated load), 50% of the rated load.
%, 75%, 110%, etc. Then, a signal 17a is output to the microcomputer 21 from each of these contacts.

[0007] The microcomputer 21 functions as a core of control and operation management of the elevator, and issues a command for registering a hall button and a car button, turning on and off. In addition to controlling the opening and closing of the doors of the elevator doors and the operation of starting / running / stopping the elevator car, a torque command 21 appropriate for running the elevator to the power converter 20 for driving the motor 19 is provided.
give a.

[0008] In the elevator control device having the above configuration,
For example, when a passenger is excessively loaded in the car cabin 15 and exceeds the rated load capacity, the 110% contact point of the weighing device 17 is turned on, and when the signal 17a is output to the microcomputer 21, the microcomputer 21 A warning such as a buzzer is issued to passengers in the car, or a command to open an elevator door is issued.

[0009]

In the conventional elevator control device as described above, the load in the car is discretely detected by a plurality of contacts of the weighing device 17. Therefore, continuous detection was not possible, and the detection accuracy was not good.

Further, the conventional weighing device 17 disposed under the car can accurately detect that the floor in the car is biased even if the weigher outputs the weight of the cab as an analog output. However, due to the distribution of people in the car, partial weighting occurred, and it was not possible to expect accuracy.

Further, in a highly efficient hoisting machine, the unbalanced torque of the sheave shaft has been a major factor in deteriorating riding comfort . The unbalanced torque of the sheave shaft includes not only the torque corresponding to the load in the car, but also the rope unbalance weight between the car and the counterweight, and the torque corresponding to the weight of the cable 18. The weighing device 17 could not detect the rope unbalance, the weight of the cable 18, and the like. In addition, the cable 18 actually used
Had a built-in power line and signal line to the elevator car, which was quite heavy. Therefore, at the time of startup, the output of the conventional weighing device 17 only detects the load in the car, and the unbalanced torque of the sheave shaft cannot be accurately compensated only from this output. For this reason, at the time of startup, the weight of the rope 12 and the cable 18 was not compensated, and the riding comfort was not good. Further, for the same reason, the riding comfort at the time of landing is not good, and the landing accuracy is not good.

SUMMARY OF THE INVENTION Accordingly, it is a first object of the present invention to provide an elevator control device having a weighing function capable of continuously and accurately detecting a load in a car which is a weight in the car. (Rope 12 and cable 18 minutes), that is, the provision of an elevator control device having a weighing function capable of continuously and accurately detecting a load of a sheave side weight corresponding to an unbalanced torque viewed from a sheave. The subject of the.

[0013]

An elevator control apparatus according to the present invention is mounted on an elevator car and a car.
Gross weight of passengers and cables on the car
And your weight detection means may detect, and the current position detection means of the car to detect the current position of the elevator car, the d
Load the load in the elevator car with two or more different predetermined values
And the car is stopped at a predetermined position at each load.
Or when traveling at a certain speed
Scale reference that detects and stores the output value of the car weight detection means
Value storage means and two or more different points in the ascent / descent process
When the car is stopped at a fixed position or at a fixed speed
Of the car weight detecting means when traveling at the position of
From the difference in the values, the car weight
The output value of the car weight detecting means is obtained by using the respective values of the stroke difference weighing value storing means for obtaining and storing the change, the weighing reference value storing means, the stroke difference weighing value storing means, and the current position detecting means of the car. And an in-cage balance correction calculating means. The elevator control device according to the invention of claim 2 is:
For passengers and cars in the elevator car and car
Cage weight detection hand that detects the total weight of hanging cables
A step, a car current position detecting means for detecting a current position of the elevator car, and a load in the elevator car of 2
Of different types and different values.
When the car is stopped at a fixed position or at a fixed speed
The output of the car weight detecting means when traveling at the position of
Weighing reference value storage means for detecting and storing values, and
The car has been stopped at two or more different locations
Or when traveling at a certain speed at a predetermined position,
Movement of the car position based on the difference between the detection values of the car weight detection means
Process of calculating and storing the change in car weight that changes with time
Differential weighing value storage means and a motor for raising and lowering the elevator car, which is fixed at two or more predetermined positions at different elevation strokes
Detecting the torque command value when traveling at speed
Using the values of the travel difference torque value storage means for storing the difference, the balance reference value storage means, the travel difference balance value storage means, the current position detection means of the car, and the travel difference torque value storage means, the weight of the car is calculated. And a sheave-side balance correction calculating means for correcting the output value of the detecting means.

[0014]

According to the first aspect of the present invention, the car weight detecting means is provided.
Passengers and cars in elevator car and car at
Detects the total weight of cables hanging on the
The current position of the elevator car is detected by the position detecting means,
Two kinds of loads in the elevator car are stored by the weighing reference value storage means.
At least different values for each load.
When the car is stopped at the position
The output value of the car weight detection means when traveling
Detect and store. In addition, the ascending / descending
Stop the car at two or more different points in the journey
Or when traveling at a certain speed at a predetermined position
Of the car position from the difference between the detected values of the car weight detecting means.
Find and memorize changes in car weight that change with movement
You. And the weighing reference value storage means and the stroke difference weighing value storage means.
By correcting the output value of the car weight detecting means using the values of the current position detecting means of the car and the car, these function as a control balance and can accurately detect the load in the car which is the load in the car. . In the invention of claim 2, the weight of the car
Passengers boarding the elevator car and car with detection means
And the total weight of cables hanging on the basket
The current position of the elevator car by the current position detecting means of
Detected and stored in the elevator car by the scale reference value storage means.
The load is set to two or more different predetermined values, and each load is
When the car is stopped at the specified position
Of the car weight detecting means when traveling at a predetermined position with
The output value is detected and stored. Also, a stroke difference weighing storage means
At two or more different locations in the ascent / descent process
When you stop, or run at a certain speed at a predetermined position
From the difference between the detection values of the car weight detection means
Finding the change in car weight that changes as the position moves
Remember. Further, the elevator is stored in the stroke difference torque value storage means.
Two points with different motor up-and-down strokes
The torque finger when traveling at a certain speed
Each of the quotations is detected and the difference is stored. Furthermore,
The weighing reference value storage means, the stroke difference weighing value storage means,
Using the values of the position detection means and the stroke difference torque value storage means
Then, the output values of the car weight detecting means are corrected, and these function as a starting balance, and the sheave side load, which is the weight difference between the car side and the counterweight side viewed from the sheave, can be accurately detected.

[0015]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram showing an elevator control device according to one embodiment of the present invention, and FIG. 2 is an overall configuration diagram showing an elevator control device according to one embodiment of the present invention. In the drawings, the same reference numerals and symbols as those of the above-described conventional example indicate the same or corresponding components as those of the above-described conventional example.

In FIG. 1, reference numeral 1 denotes a load detecting means. The load detecting means 1 comprises a car load detecting means 1A and a sheave side load detecting means 1B. 1a is a control weighing signal which is an output of the in-car load detecting means 1A, and 1b is a starting weighing signal which is an output of the sheave side load detecting means 1B. 2
Is a car weight detecting means for detecting the weight of the elevator car,
Reference numeral 3 denotes a scale reference value storage means for determining and storing a zero point and a gain of the car weight detection means 2, and 4 is a stroke difference weight value storage means. The difference between the values of the floor and the lowest floor is detected and stored. 5 is a car current position detecting means for detecting the current position of the elevator car, and 6 is a stroke unbalanced torque detecting means.
Of the torque command 21a at the highest floor and the lowest floor is detected and stored. Reference numeral 8 denotes an in-car weighing correction calculating means for applying a correction for outputting the management weighing signal 1a (a signal for detecting a load in the car). Reference numeral 9 denotes a sheave-side balance correction calculating means for performing a correction for outputting a start-up balance signal (a signal for detecting an unbalanced weight viewed from the sheave 11) 1b.

FIG. 2 is an overall configuration diagram showing an elevator control apparatus according to one embodiment of the present invention, and corresponds to FIG. 5 of a conventional example. The main difference from the conventional example is that a weighing device 25 is provided above the elevator car instead of the weighing device 17. Also, a signal 25 which is the output of the weighing device 25
a is an analog value (continuous value), which can measure the total weight of the car frame 14, the cab 15, the passengers in the car, and the cables 18.

The microcomputer 21 shown in FIG.
Has a configuration as shown in FIG. FIG. 3 is a block diagram showing a microcomputer of the elevator control device of FIG.

In the figure, 31 is a central processing unit C
PU and 32 are input ports, and 33 is an output port. 3
4 is a ROM which is a read-only memory; 35 is a RAM which is a readable and writable memory; 36 is an E ² ROM which is a nonvolatile memory which is writable and erasable by electric signals; This is a bus that is an information transmission route. 32a is a switch for writing the weighing value when no load is applied to the car in the E ² ROM 36,
32b is E ² RO the balance value when the car balanced load
A switch for writing to M36, 32c is a switch for floor height writing operation for making the elevator measure the floor height. The signal 25a of the weighing device 25 is an analog signal,
Analog-to-digital conversion at input port 32 and CP
The RAM 35 or the E ² ROM 36
Is stored in

The elevator control apparatus of this embodiment is configured as described above, and detects the load in the car (control weighing value) and the load on the sheave side (starting weighing value). The control weighing value K (Zn, α) is calculated by the expression of a term relating to detection of the control weigher described later, and the activation weighing value S (Zn, α) is similarly calculated by the expression of the term relating to detection of the activation weighing (stop). During)
Alternatively, it can be calculated by an equation (during running). Where Zn is the car position and α is the car load
Indicates the rate.

Here, the principle of this scale detection will be described. First, a case of a one-to-one roping elevator as shown in FIG. 2 will be described. In this case, the conditions are set as follows: Wcar ··· Car weight (car frame + cab weight) L ··· Rated load capacity Z ··· Car position wc measured from the lowest floor Z): Weight of cable detected by scale ε: Unbalanced weight of cable included in counter weight wr (Z): Weight of ropes and cables detected by motor (motor shaft) V (Z, γ), car position Z, weighing value at load factor γ (reference γ = car load / rated load L) ZB ... ··· Constant where car position indicates the lowest floor ZC ····· Constant where car position indicates the center floor ZT ····· Constant where car position indicates the highest floor However, wc (Z) and wr (Z) The car is linear with respect to car position Z.

When the elevator is installed, the following values are set. At the time of installation and maintenance, the coordinator loads NL (no load in the car) and BL (balance load in the car) on the car, and stops the car at the center floor of the hoistway. At this time, when the switches 32a and 32b in FIG. 3 are pressed, the weighing output value at that time is automatically written into the E ² ROM 36, and the weighing value is as follows. V (ZC, 0) = Wcar + wc (ZC)... The weighing value when the car position is the center floor and the load is NL V (ZC, β) = Wcar + βL + wc (ZC). , The weighed value when the load is BL, where β is the counter weight ratio. These V (Z
C, 0) and V (ZC, β) are E
² Stored in the ROM 36.

Next, detection of the control balance will be described. As described above, the management weigher has a function of measuring only the load in the car, that is, the weight of the passenger in the car. First, a value detected in advance is measured during the floor height writing operation. This is done during stops on the top floor and the bottom floor.
The weighing value at the top floor and the lowest floor at a certain load γL is as follows: V (ZB, γ) = Wcar + γL + wc (ZB) V (ZT, γ) = Wcar + γL + wc (ZT) Therefore, the stroke difference is calculated as follows: V (ZT, γ) −V (ZB, γ) = wc (ZT) −wc (ZB) ≡ C (constant) (where ≡ is a symbol with = written below △ ) Is a substitute for
"Means to define") . Note that this stroke difference weighing value may be measured with an arbitrary load.

Now, it is assumed that a load of αL is loaded in the car on the nth floor. The weighed value at this time is: V (Zn, α) = Wcar + αL + wc (Zn) Then, the control weight to be detected is αL, and if this is K (α), K (α) = αL = V (Zn, α) −Wcar−wc (Zn) = V (Zn, α) − [ Wcar + wc (ZC)]-[wc (Zn) -wc (ZC)]. In this equation, the weighing value corresponding to Wcar + wc (ZC) is V (ZC, 0), and wc (Zn) -wc
(ZC) is a linear expression related to Zn. That is, from wc (Zn) = {C / (ZT-ZB)}. Times. (Zn-ZC) + wc (ZC), it follows that wc (Zn) -wc (ZC) = {C / (ZT-ZB)}. Times. (Zn -ZC). Therefore, K (Zn, α) = V (Zn, α)
−V (ZC, 0) − {C / (ZT−ZB)} × (Zn−
ZC)...

V (Zn, α) is the weighing value at the current time, V (ZC, 0) is the weighing value when the load is NL at the center floor, and {C / (ZT−ZB)} × (Zn-ZC) is a cable correction amount, and this value is obtained by calculation.
Since V (ZC, 0) and C have already been written in the E ² ROM 36, the remainder is calculated by the CPU 31.

Next, detection of the starting scale will be described. As described above, the starting balance has a function of detecting the load on the sheave side, that is, the unbalanced weight between the car side and the counterweight side as viewed from the sheave shaft. First, a value detected in advance is measured during the floor height writing operation. This is performed while traveling near the top floor and the bottom floor. Note that these values are unbalanced portions of the ropes and cables viewed from the motor shaft.
Motor torque command value TM during constant running with a certain load γL
The weighing value at the top floor and the bottom floor of TM is: TM (ZB, γ) = [{(γ−β) L + wr (ZB) −ε} / η] + wlos TM (ZT, γ) = [｛(γ−β ) L + wr (ZT) -ε｝ / η] + wlos. In addition, car side weight = Wcar + γL, weight side weight =
W car + βL + ε. Η is efficiency, wlos is running
Line loss. Then, the load factor γ = car passenger weight / rated load weight (L). For example, if the load factor is 0.5, it indicates that half of the rated load capacity is loaded in the car. Here, γL indicates the passenger weight in the car. Thus, stroke difference torque value, TM (ZT, γ) -TM (ZB, γ) = {wr (ZT) -wr (ZB)} / η ≡ R ( constant), and a constant regardless of the basket in the load Become.

Now, it is assumed that a load of αL is loaded in the car on the nth floor. The weighed value at this time is: V (Zn, α) = Wcar + αL + wc (Zn) = [Wcar + βL + wc (ZC)] + [(α−β) L + wr (Zn) −ε] + [wc (Zn) −wc ( ZC)]-[wr (Zn)-[epsilon]]. Here, Wcar + βL + wc (ZC) = V (Z
C, β).

Now, as an assumption 1, it is assumed that the efficiency η is 1 and the running loss wlos is 0. Then, the starting weighing value is set to S (Zn
, Α), S (Zn, α) ≒ (α−β) L + wr (Zn) −ε, so that S (Zn, α) = V (Zn, α) −V (ZC, β) − [ wc (Zn) -wc (ZC)] + [wr (Zn)-[epsilon]]. In this equation, wc (Zn) -wc (ZC) is a linear equation relating to Zn, and as described in the above-mentioned control weighing section, wc (Zn) -wc (ZC) = {C / (ZT-ZB). )｝ × (Zn-ZC). Also, wr (Zn) -ε is a linear expression related to Zn.
It is.

Here, as assumption 2, wr (Z
C) = ε. That is, the counter weight is set so that the car position is perfectly balanced at the center floor with the car internal load βL. At this time, S (ZC, β) = 0 and the motor can actually detect wr (Z
Instead of n), it is wr (Zn) -ε. At this time, w
r (Zn)-[epsilon] = {R / (ZT-ZB)} * (Zn-Z
C). Therefore, S (Zn, α) = V (Zn, α) −V (ZC, β) − {C / (ZT−ZB) × (Zn−ZC)} + {R / (ZT−ZB)} × ( Zn−ZC)... V (Zn, α) is the weighed value of the current time,
V (ZC, β) is a weighing value when the car position is the center floor and the load is βL, and {C / (ZT−ZB)} × (Zn−ZC)
Is the weight of the cable, {R / (ZT-ZB)} ×
(Zn-ZC) is the unbalance of the rope & cable.

Next, the starting weighing value during running will be described. This starting scale is also used during traveling (for landing correction).

Now, it is assumed that the car starts from the nth floor with an internal load of αL and the car is traveling on the s floor. The weighing value at this time is as follows: V (Zn, α) = Wcar + αL + wc (Zn) while stopping at the nth floor, and assuming that the vehicle stops at the sth floor, V (Zs, α) = Wcar + αL + wc (Zs). Therefore, V (Zs, α) −V (Zn, α) = wc (Zs) −wc (Zn) = {C / (ZT−ZB)} × (Zs−Zn), and V (Zs, α) = V (Zn, α) + {C / (ZT−ZB)} × (Zs−Zn) Starting from the n-th floor, the starting weighing value while traveling on the s-th floor is: S (Zs, α) = V (Zs, α) −V (ZC, β) − {C / (ZT−ZB)} × (Zs−ZC) + {R / (ZT−ZB)} × (Zs−ZC) = V (Zn, α) + {C / (ZT−ZB)} × (Zs−Zn) −V (ZC, β ) − {C / (ZT−ZB)} × (Zs−ZC) + {R / (ZT−ZB)} × (Zs−ZC). Therefore, S (Zs, α) = V (Zn, α) −V (ZC, β) − {C / (ZT−ZB)} × (Zn−ZC) + {R / (ZT−ZB)} × ( Zs−ZC)... V (Zn, α) is the start time (when stopped)
V (ZC, β) is the weighed value when the car position is at the center floor and the load is βL. Also, {C / (ZT−ZB)} × (Zn−ZC) is the weight of the cable at the start time (when stopped), and {R / (ZT−ZB)} × (Zs−ZC) is the current time. Unbalanced rope and cable.

As described above, the control weighing value K (α) is given by the equation, and the starting weighing value S (Zn, α) is given by the equation (during stop).
Or by the formula (during running).

The elevator can perform a floor height writing operation for measuring the floor height of the building. In this operation, the elevator always stops at the lowest floor and the highest floor. Therefore, at the time of this stop, V (ZB, γ), V (ZT, γ), TM (Z
T, γ) and TM (ZB, γ) are stored in the E ² ROM 36.

Based on the above principle, the equations, equations, and equations are shown in FIG.
The microcomputer 21 calculates the control weighing value and the starting weighing value. In addition, V (ZC, 0) and C in the equation,
Since V (ZC, β), C and R in the formulas are values unique to each elevator, they are stored in the E ² ROM 36 of the microcomputer 21 in FIG.
No data is lost when the power is turned off.

In order to obtain the control weighing value and the starting weighing value without using the elevator control device of this embodiment, the following expression is used.
The formula, C and R of the formula are calculated by the designer at the time of product shipment,
It is necessary to write data in the ROM 34, the E ² ROM 36, and the like. Further, since C and R are different for each elevator, a great deal of time and labor is required. However, in this embodiment, the control weight and the start weight can be obtained by the calculation by the microcomputer 21.
Extremely efficient.

By the way, in the above-described embodiment, the one shown in FIG.
I mentioned the case of one-to-one roping elevator,
Scale detection can be performed in the same manner even in an elevator of a roping other than the one-to-one roping. FIG. 4 is a schematic diagram showing elevators of various roping types.

In FIG. 4, (a) shows an elevator of one-to-one roping, (b) shows an elevator of two-to-one roping, and (c) shows an elevator of special roping.

For example, even in a two-to-one roping elevator (FIG. 4B), the scale can be detected in the same manner as in the one-to-one roping elevator. However, 2 to 1
The condition setting in the case of a roping elevator is the same as the car weight Wcar of the condition setting of the one-to-one roping elevator.
Is (1/2) Wcar, and the rated load capacity L is (1/2) L
The cable weight wc (Z) detected by the scale is set to the rope & cable weight wc (Z) detected by the scale, and the others are the same. That is, the car position Z, the unbalance weight ε of the cable included in the counterweight, the weight wr (Z) of the ropes and cables detected by the motor, the car position Z, and the weighing value V at the load factor γ (Z, γ), a constant ZB where the car position indicates the lowest floor, a constant ZC where the car position indicates the center floor, a constant ZT where the car position indicates the highest floor, assumption 1 and assumption 2 remain unchanged.

As a result, as in the case of the one-to-one roping elevator, the control weighing value and the starting weighing value are detected also in the two-to-one roping elevator.

The one-to-one roping and the two-to-one
Not only in the case of a roping elevator, but also in FIG.
In the elevator with special roping as described above, the control weighing value and the starting weighing value are similarly detected.

As described above, the elevator control apparatus according to this embodiment uses the passengers in the elevator car and the car.
And the cage that detects the total weight of the cables hanging on the cage
The weight detecting means 2 detects the current position of the elevator car.
The current position detecting means 5 of the car to be outgoing and the elevator
Set your internal load to two or more different predetermined values, and
When the car stops at a given position under load, or
The weight of the car when traveling at a certain speed at a certain position
Scale reference value storage means for detecting and storing the output value of the detection means
3 and predetermined positions at two or more different points in the ascent / descent process
When the car stops, or at a certain speed
Whether the difference between the detected values of the car weight detecting means when traveling
Calculate the change in car weight that changes as the car position moves.
A stroke difference weighing value storage means 4 for storing the weighing reference value
Storage means 3, stroke difference storage means 4, car current position detection
Using the respective values of the means 5, the output of the car weight detecting means 2
A car comprising a car balance correction calculating means 8 for correcting the value
It has an internal load detecting means 1A.

Therefore, the in-car load detecting means 1A can accurately detect the in-car load, which is the weight of the passengers in the elevator car. The function of detecting this is a function as a management scale. As a result, it is possible to detect that the passenger is overloaded on the elevator car, and to issue a warning to the passenger. Further, when the passengers are full, it is possible to prevent the passengers from getting on any more so that they do not respond to the passenger call (the hall passage function). Furthermore, it is possible to optimally assign a plurality of elevators managed in a group. That is, it is extremely important in terms of safety and operation of the elevator. Naturally, the more accurate the detection accuracy, the higher the safety and the higher the operation efficiency.

The elevator control apparatus according to the present embodiment includes a passenger and a car who are in the elevator car and car.
Cage weight detection that detects the total weight of cables that fall on the car
Detecting means 2 and detecting the current position of the elevator car
A car current position detecting means 5;
Set the load to two or more different predetermined values, and
When the car is stopped at a predetermined position
The car weight detection hand when traveling at a predetermined position in degrees
Scale reference value storage means 3 for detecting and storing the output value of the stage;
A car at a predetermined position at two or more different points during the elevating process
When the vehicle stops, or when traveling at a certain speed
From the difference in the detected values of the car weight detecting means
Determine and record the change in car weight that changes as the position moves.
Travel difference balance storage means 4;
3, travel difference weighing storage means 4, car current position detection means 5
The output value of the car weight detecting means 2 is supplemented by using the values of
In addition to the correcting means 8 for correcting the balance in the car,
Storage means 3, travel difference value storage means 4, car current position detection
Each output value of the output means 5 and the elevator car are raised and lowered
Check the torque command value at a specific position during the motor up / down stroke.
The output value of the stroke difference torque value storage means 6 to be output and stored is used.
There are, sea for correcting the output value of the car weight detecting means 2
Detects the sheave load provided with the weigh balance correction calculation means 9
And a sheave-side load detecting means 1B.

Accordingly, the sheave side load detecting means 1B can accurately detect the sheave side load, which is the weight difference between the elevator car side and the counterweight side as viewed from the sheave. The function of detecting this is a function as a start-up scale. As a result, a torque for correcting the unbalance weight is generated in the motor in advance at the time of starting, and the starting shock can be eliminated. Also, the landing accuracy can be improved.

As described above, in the elevator control apparatus of this embodiment, the load detecting means 1 is constituted by the in-car load detecting means 1A functioning as a control weigher and the sheave side load detecting means 1B functioning as a starting weigher. ing. Although both the control weigher and the starting weigher have different functions, both are necessary functions for detecting the load of the elevator. The basis of these two weighing operations is the weighing device 25.
The signal 25a is calculated by the signal 25a. It should be noted that, even with the conventional analog output weighing device 17 disposed under the car, if the eccentric load in the car can be ignored, the output 17a can be adopted as a control weighing value without any correction. it can. However, if the eccentric load in the car cannot be neglected, it is preferable to arrange the weighing device 25 on the car as shown in FIG.

For this reason, in this embodiment, the load in the car, which is the weight in the car, and the load on the sheave (the rope 12
And the cable 18 minutes), that is, both the load and the sheave side weight corresponding to the unbalanced torque viewed from the sheave can be detected continuously and accurately. Then, the sheave side weight, that is, the weight including the car frame 14, the rope 12, and the cable 18 can be detected, and by correcting the detected value according to the position of the elevator car, the rope 12 can be detected.
In addition, the weight of the power line and the signal line to the elevator car built in the cable 18 is always considered, and the unbalanced amount is appropriately reflected in the motor torque command. As a result, the ride comfort is improved, the ride comfort at the time of landing is good, and the elevator with good landing accuracy can be controlled.

Further, since the weighing device 25 of the elevator control device of this embodiment is disposed on the car, the total weight of the car frame 14, the cab 15, the passengers, luggage, cables and the like in the car is reduced. It is possible to accurately detect even if partial load is applied to the floor in the car. Also, this weighing device 25
Only needs to detect the displacement of the rope shackle spring,
Manufacturing cost is low.

Further, since there is no need for the designer to calculate and adjust the zero point and gain of the weighing device 25 itself at the time of shipment from the factory, the production efficiency is extremely high.

In the above-described embodiment, the description has been made mainly on the elevator of one-to-one roping. However, the present invention is not limited to the elevator of this type of roping, but may be applied to an elevator of two-to-one roping or an elevator of another special roping. ,
Available as well.

[0050]

As described above, the elevator control apparatus according to the first aspect of the present invention can be mounted on an elevator car and a car.
Detects total weight of passengers and cables hanging on car
Car weight detecting means, and the current position of the elevator car
Current position detecting means for detecting the position of the car;
The load in the car is set to two or more different predetermined values, and
When the car is stopped in place at various loads, or
Or when traveling at a certain speed at a predetermined position,
Weighing reference value storage that detects and stores the output value of the weight detection means
Means and predetermined positions at two or more different points in the ascent / descent process
When the car is stopped at a predetermined position or at a constant speed
Difference between the detected values of the car weight detecting means when traveling
Changes in car weight that change as the car position moves
A stroke difference weighing value storage means for obtaining and storing
Mean value storage means, travel difference weighing value storage means, current car position detection
Using the values of the output means, the
Correct the output value of the weight detection means to detect the load in the car.
Things. Therefore, the load detection means in the car
And the load in the car, which is the weight of the passengers in the elevator car
Can be accurately detected. Therefore, this
It can detect passengers overloading the elevator car,
Optimal allocation of multiple elevators controlled in groups
And the more accurate the detection accuracy, the higher the safety,
Operation efficiency also improves.

According to a second aspect of the present invention, there is provided an elevator control apparatus, comprising: a passenger and a passenger in an elevator car;
Cage weight detection that detects the total weight of cables that fall on the car
Output means, current position detection means for detecting the current position of the elevator car, and load in the elevator car
Are two or more different predetermined values, and for each load
When the car is stopped at a predetermined position, or at a constant speed
When traveling at a predetermined position, the car weight detecting means
Scale reference value storage means for detecting and storing output values,
Stop the car at two or more different points in the journey
Or when traveling at a certain speed at a predetermined position
Of the car position from the difference between the detected values of the car weight detecting means.
Find and store the change in car weight that changes with movement
Travel difference weighing value storage means, and a motor for raising and lowering the elevator car at a predetermined position at two or more points having different lifting strokes.
Detects torque command values when traveling at a constant speed
And a stroke difference torque value storage means for storing the difference.
The weighing reference value storage means, the stroke difference weighing value storage means,
Of the current position detecting means and the stroke difference torque value storing means
, The car weight is detected by the sheave-side balance correction calculation means.
Sheave that corrects the output value of the means and detects the sheave side load
By the side load detecting means functioning as a starting scale,
Sheave, which is the weight difference between the basket side and the counterweight side as seen from the sheave
Since the side load can be detected accurately, the
Take both loads unbalanced continuously,
Moreover, it can detect with high accuracy, and these are the motor torque commands.
Is reflected properly, and riding comfort when driving and landing is improved.
In addition, elevator control with good landing accuracy can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an elevator control apparatus according to one embodiment of the present invention.

FIG. 2 is an overall configuration diagram showing an elevator control device according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a microcomputer of the elevator control device of FIG. 2;

FIG. 4 is a schematic diagram showing elevators of various roping types.

FIG. 5 is an overall configuration diagram showing a conventional elevator control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Load detection means 1A Car load detection means 1B Sheave side load detection means 2 Car weight detection means 3 Weighing reference value storage means 4 Stroke difference weighing value storage means 5 Current car position detection means 8 In-car balance correction calculation means 9 Sheave Side balance correction calculation means 21 Microcomputer

Claims (2)

(57) [Claims] (1) The passenger is in an elevator car or car.
Detecting the total weight of cables hanging on passengers and cars
Car weight detecting means, car current position detecting means for detecting the current position of the elevator car, and two or more different predetermined loads in the elevator car.
And stop the car at the specified position at each load
Or when traveling at a certain speed at a predetermined position
Detecting and storing the output value of the car weight detecting means.
Weighing reference value storage means and a car at a predetermined position at two or more different points in the ascent / descent process
When the vehicle stops, or when traveling at a certain speed
From the difference in the detected values of the car weight detecting means
Determine and record the change in car weight that changes as the position moves.
A stroke difference weighing value storage means for憶, the balance reference value storage means, stroke difference weighing value storage unit, by using the values of the current position detecting means of the car, the car for correcting the output value of the car weight detecting means A control device for an elevator, comprising: a balance correction calculating unit. 2. The vehicle is in an elevator car and a car.
Detecting the total weight of cables hanging on passengers and cars
Car weight detecting means, car current position detecting means for detecting the current position of the elevator car, and two or more different predetermined loads in the elevator car.
And stop the car at the specified position at each load
Or when traveling at a certain speed at a predetermined position
Detecting and storing the output value of the car weight detecting means.
Weighing reference value storage means and a car at a predetermined position at two or more different points in the ascent / descent process
When the vehicle stops, or when traveling at a certain speed
From the difference in the detected values of the car weight detecting means
Determine and record the change in car weight that changes as the position moves.
A stroke difference weighing value storage means for憶, different lifting stroke of the motor for elevating the elevator car
When driving at a fixed speed at two or more specified locations
A difference torque value storage means for detecting each of the torque command values of the above and storing the difference, a weighing reference value storage means, a stroke difference weighing value storage means, a car current position detection means, and a stroke An elevator control device comprising: a sheave-side balance correction calculating means for correcting an output value of the car weight detecting means using a value of the difference torque value storing means.