JP7132438B2 - elevator equipment - Google Patents

Description

The present invention relates to an elevator device equipped with a position detection device.

In the elevator device, the landing door and the car door are opened and closed in conjunction with each other. At this time, a position detection device is used to detect the position at which the door can be opened. This position detection device is composed of an object to be detected installed in the hoistway and a position detector (sensor) installed in the car to detect the object to be detected. For example, a photoelectric sensor and a light shielding plate are used as the position detecting device.

Such a position detecting device is applied to a safety device for preventing the car from moving from a position where the door can be opened while the door is open.

Techniques described in Patent Literatures 1 and 2 are known as conventional techniques relating to such a position detection device.

In the technique described in Patent Document 1, a patterned magnet is attached to the lower part of the threshold of the door on the landing side, and a sensor arranged under the car detects the position where the door can be opened and closed.

In the technique described in Patent Document 2, when the position detector for detecting the object to be detected provided on each floor fails, a pulse generator (governor encoder) provided in the governor mechanism is used to determine the position at which the door can be opened. to detect

JP-A-11-246139 WO2017/168619

However, in the technique described in Patent Document 1, when an abnormality occurs in the position detection device, the position at which the door can be opened cannot be detected, the reliability of the elevator operation control decreases, and it is difficult to continue the operation of the car. Become.

Further, in the technique described in Patent Document 2, when the position detector fails, a pulse generator is used instead of the position detector. The reliability of the position where the door can be opened is lowered.

SUMMARY OF THE INVENTION Accordingly, the present invention provides an elevator apparatus equipped with a position detection device capable of detecting a door openable position with high reliability.

In order to solve the above problems, an elevator system according to the present invention includes a position detection device for detecting the position of a car in a hoistway, an elevator controller for controlling the operation of the car, and based on the output of the position detection device. , and a safety controller independent of the elevator controller, which outputs a signal indicating whether or not the door is in a door-openable position used for control by the elevator controller, wherein the position detection device is located in the hoistway. a first position detector having a first detectable body provided at a position corresponding to the floor position; and a first position detector for detecting the first detectable body; a second position detection unit that detects an absolute position in the road, and the safety controller detects a second position based on a database that stores data on positions where the door can be opened and the output of the second position detection unit. and if the abnormality determination unit determines that there is no abnormality, whether the output of the second position detection unit is within the data range of the possible door opening position Based on the determination result, a signal indicating whether or not the door is at the position where the door can be opened is outputted. and a door openable position output section for outputting the output signal of the first position detection section.

According to the present invention, the door openable position can be detected with high reliability.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram of the elevator apparatus which is one Embodiment. It is a block diagram showing a functional configuration of a safety controller in the embodiment. 4 is a time chart showing an example of the output signal of the first position detector during measurement operation; 4 is a time chart showing an example of output signals of a first position detector and a second position detector; It is a block diagram of DB21 (database). 7 is a flowchart showing DB creation processing executed by a possible door opening position creating unit; 7 is a flow chart showing a process of setting possible door-floor positions executed by a door-openable position creating unit; 9 is a flowchart showing abnormality determination processing of the second position detector executed by the abnormality determination unit; It is a figure which shows an example of the temporal change of the measurement result of a floor position.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same reference numbers denote the same components or components with similar functions.

FIG. 1 is an overall configuration diagram of an elevator apparatus that is one embodiment of the present invention.

As shown in FIG. 1, a sheave 104 and a deflection sheave 105 are provided in the upper part of the hoistway in the building. The main rope 101 is wound around the sheave 104 and the deflector 105 . A car 100 and a counterweight 113 are connected to one end and the other end of the main rope 101, respectively. A car 100 and a counterweight 113 are suspended in the hoistway by such a main rope 101 .

Main rope 101 is linearly driven when sheave 104 is rotationally driven by electric motor 106 powered by power converter 108 . As a result, the car 100 and the counterweight 113 move up and down in opposite directions to each other in the hoistway. In this case, the car 100 moves between floors in the hoistway. When the car 100 lands on the destination floor and stops, the car door 112 provided on the car 100 and the landing door 111 provided on the landing 115 are mechanically engaged. As a result, both the car door 112 and the landing door 111 are driven to open and close by a door driving device (not shown) provided in the car 100 .

A pulse generator 107 is also attached to the electric motor 106 . A pulse generator 107 generates a pulse signal according to the rotation of the electric motor 106 . As the pulse generator 107, for example, a rotary encoder or a resolver can be applied. A pulse signal output from the pulse generator 107 is input to the elevator controller 109 . The elevator controller 109 counts the pulse signals to calculate the speed of the motor 106, the equivalent position of the car 100 in the direction of travel in the hoistway, the distance traveled, and the like.

Here, the "equivalent position and movement distance" mean the vertical position and movement distance of the car obtained from the amount of rotational displacement of the electric motor 106 indicated by the count value of the pulse signal output by the pulse generator 107. is doing.

A first position detector 1 is provided on the car 100 at a predetermined distance from the car 100 in the direction in which the car 100 is raised and lowered. Detectable objects 2 detected by a first position detector 1 are provided in the hoistway so as to correspond to positions where the door can be opened on each floor. Therefore, when the car 100 is positioned at a position where the door can be opened, the detected object 2 is detected by the first position detector 1 .

Here, as the first position detector 1, a photoelectric sensor, a magnetic sensor, a high-frequency magnetic field sensor, or the like can be applied. In addition, various detection objects 2 (for example, shielding plates (light, magnetism)) are applied according to the sensor to be applied.

An output signal from the first position detector 1 is input to the safety controller 110 . The safety controller 110 is a controller that constitutes the safety system of the elevator, and controls braking of the car 100 by braking operation and power shutdown independently of the elevator controller 109 . The safety controller 110 has a CPU (Central Processing Unit) for executing processing as a main component, and also has a watchdog timer for detecting CPU abnormalities and a circuit for monitoring power supply abnormalities. It should be noted that processing abnormality of the CPU may be detected by duplicating the CPUs and comparing the processing operations of the CPUs.

The car 100 is further provided with a second position detector 3 at a predetermined distance from the car 100 in the ascending/descending direction of the car 100 . An output signal from the second position detector 3 is input to the safety controller 110 . In the hoistway, an elongated (tape-shaped, rope-shaped, ribbon-shaped, slender rod-shaped, etc.) object 4 to be detected by the second position detector 3 is suspended.

The elongated detection object 4 has absolute position information in the vertical direction in the hoistway along its longitudinal direction, for example, height information from the reference floor. This absolute position information is obtained by varying the electromagnetic properties, optical properties, mechanical shapes and properties, geometric pattern shape of the surface, etc. along the longitudinal direction of the object 4 to be detected. is continuously set to On the other hand, a magnetic sensor, a magnetostrictive sensor, an optical sensor, an image sensor, or the like is applied as the second position detector 3 that detects the absolute position information set on the detected object 4 .

The detected body 4 extends along the height direction in the hoistway from the top to the bottom in the hoistway. Absolute position information is continuously set in the detected object 4 from the portion located at the top of the hoistway to the portion located at the bottom of the hoistway and the portion therebetween. Thereby, the absolute position of the car 100 (for example, the height of the position of the car 100 from the reference floor) can be continuously detected within the movable range of the car 100 .

Other means for detecting the absolute position of the car in the hoistway include a rotary encoder installed on a governor with a governor rope, an absolute encoder with a toothed belt and gears suspended in the hoistway, and a camera image in the hoistway. can be applied to position detection by

FIG. 2 is a block diagram showing the functional configuration of the safety controller in this embodiment. In the figure, the inside of the dashed line corresponds to the safety controller 110 (FIG. 1). Note that in the present embodiment, the CPU functions as each part by executing a predetermined program.

The functions of the safety controller 110 will now be described with reference to other drawings (FIGS. 3-8).

The door-openable position generating unit 20 shown in FIG. 2 determines the position where the door of the car 100 can be opened ( hereinafter referred to as "door-openable position") is created as an absolute position from the reference plane of the lower part of the hoistway, and the created door-openable position is stored in a DB (database) 21.

When the elevator installation is completed, if the object 2 to be detected (FIG. 1) is displaced due to an earthquake or the like, the DB 21 is configured so that positional displacement occurs between the object 2 to be detected and the floor surface of the building due to aging of the building. Created when it occurs. At this time, an elevator operation control system (not shown) executes a position measurement operation (hereinafter referred to as a “measurement operation”) for creating the DB 21 . Further, when the safety controller 110 receives a door-openable position creation command for commanding creation of the DB 21 from the elevator operation control system side, the safety controller 110 executes a process of creating the DB 21 . In this measurement operation, the car 100 is moved to the lowest floor and then moved from the lowest floor to the highest floor at a predetermined speed lower than the rated speed.

FIG. 3 is a time chart showing an example of the output signal of the first position detector 1 during measurement operation.

While the first position detector 1 is detecting the object 2 to be detected, the output signal is in the ON state. Therefore, the ON state period indicates that the position of the car 100 is the door-openable position. In the present embodiment, the time at the center of the period in which the output signal of the first position detector 1 is in the ON state (hereinafter referred to as "ON period") (in the figure, the time width before and after is equal to A time), the floor of the car and the floor of the landing coincide. For example, when the object to be detected 2 is a light or magnetic shielding plate, such an output signal is obtained by making the height of the shielding plate correspond to the range of positions where the door can be opened, and the center of the height direction of the shielding plate being the landing position. It is obtained by installing a shielding plate so as to correspond to

Since the measurement operation is performed at a constant speed during position measurement, the output signal waveform of the first position detector 1 is be symmetrical.

Next, an overview of the process of creating the DB 21 using the output signals of the first position detector 1 and the second position detector 3 in the door-openable position generator 20 will be described.

FIG. 4 is a time chart showing an example of output signals of the first position detector 1 and the second position detector 3. FIG.

When the door-openable position generator 20 of the safety controller 110 detects the ON edge of the output signal of the first position detector 1 (at the time when the first position detector 1 starts detecting the detectable object 2), The output value ("A" in FIG. 4) of the second position detector 3 at this time is stored. After that, when the door-openable position generator 20 detects the OFF edge of the output signal of the first position detector 1 (at the time when the first position detector 1 finishes detecting the detected object 2), The output value (“B” in FIG. 4) of the second position detector 3 at is stored.

As shown in FIG. 3, the center of the ON period of the output signal of the first position detector 1 is the time when the floor of the car and the floor of the landing coincide. (A+B)/2 is calculated as the position where the floor surface and the floor surface of the landing coincide (hereinafter referred to as "floor position"). Based on the floor position ((A+B)/2), the door-openable position creating section 20 sets the width C of the door-openable position in the car elevation direction. That is, the door-openable position creation unit 20 calculates (A+B)/2±C, and by setting these as the upper and lower limits of the door-openable position, the door can be opened with a length of 2C centered on the floor position. Set position. Note that the width C is stored in the safety controller 110 in advance.

The door-openable position creating unit 20 performs the above-described processing on each floor, and creates the DB 21 of possible door-openable positions for each floor from the bottom floor to the top floor.

FIG. 5 is a configuration diagram of the DB 21. As shown in FIG. Note that the DB 21 is stored in a storage device (not shown) included in the safety controller 110 .

The DB 21 stores floors, the center position of the first position detector 1 calculated from the output values (A, B, . . . ) of the second position detector 3 on each floor (the above-mentioned floor position), It contains the data of the upper limit and lower limit of the position where the door can be opened by adding/subtracting the width (α, β) of the position where the door can be opened to/from the central position. Along with these data, the DB 21 may also include the output values (A, B, . . . ) of the second position detector 3 on each floor.

It should be noted that, as shown in FIG. 5, the width at which the door can be opened may be changed according to the floor.

A door-openable position output unit 22 shown in FIG. is determined and output to the elevator controller 109 (FIG. 1) or the like. The door-openable position output unit 22 refers to the DB 21 and outputs the door-openable position when the determination result of the abnormality determination unit 23 is not "abnormal". Further, when the judgment result of the abnormality judging section 23 is "abnormal", the door-openable position output section 22 outputs the output signal of the first position detector 1 as data indicating the door-openable position. At this time, since the second position detector 3 is abnormal, the elevator controller 109 (FIG. 1) uses the output signal of the first position detector 1 to execute degenerate operation.

Here, degraded operation means operating at a lower speed than normal (during service operation), operating with a more restricted floor range than normal (during service operation), and moving to the nearest floor. and so on.

The abnormality determination unit 23 is calculated from the output value of the second position detector 3 at each of the ON edge and OFF edge of the output signal of the first position detector 1 during normal operation (during service operation). When the size of the difference between the floor position data stored in the DB 21 and the floor position data stored in the DB 21 exceeds an allowable value, it is determined that the second position detector 3 is abnormal. Then, the abnormality determination section 23 outputs "abnormality" to the door-openable position output section 22 as the determination result.

It should be noted that the smaller the allowable value of the difference, the higher the detection sensitivity of abnormality and the earlier detection becomes possible, but the number of degeneracy operations increases. The number of times is reduced. Therefore, the allowable value of the difference is appropriately set in consideration of both the detection sensitivity and the frequency of degeneration operation.

Such a difference is caused by displacement of the object 2 to be detected due to an earthquake, displacement between the object 2 to be detected and the floor of the building due to secular change of the building, and It occurs with the expansion and contraction of the object 4 to be detected, which depends on the temperature and humidity. Therefore, an abnormality of the position detection means can be detected based on the magnitude of the difference.

Next, the DB creation processing executed by the possible door opening position creation unit 20 will be described.

FIG. 6 is a flowchart showing a DB creation process executed by the possible door opening position creating unit. In addition, unless otherwise specified in the following description, the entity that executes each process is the door-openable position creation unit 20 (FIG. 2).

First, at step 300, it is determined whether or not a door-openable position creation command from the outside (elevator operation control system) is ON. If the door-openable position creation command is OFF ("N" (NO) in step 300), the DB creation process ends (step 301).

If the door-openable position creation command is ON (“Y” (YES) in step 300), it is determined in step 302 whether the output of the first position detector 1 is ON. When the output of the first position detector 1 is OFF ("N" in step 302), in step 303, it is determined that the position of the car 100 is not the initial position (measurement operation start position). After outputting the abnormality to (elevator operation control system), the DB creation process is terminated (step 304).

Here, in the present embodiment, in the measurement operation, the elevator operation control system sets the initial position of the car 100 to the lowest floor (floor landing position) and causes the car 100 to travel toward the top floor. The elevator operation control system may set the initial position to the top floor and move the car 100 toward the bottom floor.

When the output of the first position detector 1 is ON ("Y" in step 302), in step 305, the output value of the second position detector 3 is stored in the DB 21 as the lowest floor position. do.

Next, in step 306, it waits until the first position detector 1 is turned off (waits for execution of DB creation processing).

Further, in step 307, the process waits until the output of the first position detector 1 is turned ON again, that is, until the next door openable position is detected.

When the output of the first position detector 1 is turned ON again ("Y" in step 307), the output value of the second position detector 3 is stored in step 308, and then in step 309, the Wait until the output of one position detector 1 is turned off. At the timing of turning OFF ("Y" in step 309), in step 310, the output value of the second position detector 3 is stored again.

Next, in step 311, from the stored output value of the second position detector 3, the center of the range of positions where the door can be opened (“center” in FIG. 5), that is, the floor position is calculated. The floor position obtained is stored in DB21. Further, by adding or subtracting a predetermined value (α, β in FIG. 5) of the width of the position where the door can be opened to/from the calculated floor position, the upper and lower limits of the range of positions where the door can be opened are calculated and stored in the DB 21. .

After that, in step 312, the floor N is increased by one floor. That is, the next DB 21 creation target floor is set. Next, in step 313, it is determined whether or not the external door-openable position creation command is OFF, and if it is not OFF ("N" in step 313), the above-described processing is repeatedly executed. If it is OFF ("Y" in step 313), in step 314, the output value of the second position detector 3 is stored in the DB 21 as the floor position of the top floor, and then the process ends (step 315). ).

In the present embodiment, the timing at which the door-openable position creation command is turned off is when the elevator operation control system moves the car 100 to the top floor, and when the car 100 reaches the top floor and stops. .

Next, a description will be given of the process by which the door-openable position output unit 22 (FIG. 2) sets the door-floor possible position used for control.

FIG. 7 is a flow chart showing the process of setting possible door floor positions executed by the possible door open position creation unit. Unless otherwise specified in the following description, it is the door-openable position output unit 22 (FIG. 2) that executes each process.

First, at step 400, it is determined whether there is an abnormality notification (determination result output) from the abnormality determination unit 23. FIG. If there is an abnormality notification ("Y" in step 400), in step 401, the output of the first position detector 1 is output as the door-openable position, and then in step 402, the second position Output a notification indicating that the detector 3 has failed. Elevator controller 109 (FIG. 1) executes a degeneracy operation upon receiving notification that second position detector 3 is out of order.

In this embodiment, the elevator controller 109 normally uses the door-openable position detected by the second position detector 3 to control the operation of the car. If detected, the first position detector 1 is used to detect the position at which the door can be opened, so that the operation of the car 100 can be continued, albeit in a degenerate operation.

If there is no notification of abnormality from the abnormality determination unit 23 ("N" in step 400), in step 404, the output of the second position detector 3 is within the range of possible door opening positions in the DB 21 (in FIG. between the "upper limit" and "lower limit" of the door), and if the output of the second position detector 3 is within the range of the position where the door can be opened (Y in step "404"), the door can be opened The position is output as ON (door openable) (step 405). If the output of the second position detector 3 is outside the range of the door-openable position ("N" in step 404), the door-openable position is output as OFF (door cannot be opened) (step 406).

When the moving car 100 is to land on the floor, according to the above-described step 405, the car 100 moves in the hoistway and reaches the upper limit (in the case of downward movement) within the range of positions where the door can be opened. ) or reaches the lower limit (in the case of upward movement), the door-openable position output unit 22 outputs an ON signal indicating that the door can be opened. When the elevator controller 109 receives this ON signal, the elevator controller 109 acquires the data of the width of the door openable position (corresponding to α and β in FIG. 5) of each floor stored in the storage device of the controller itself or the safety controller 110. , the remaining distance (=width of the position where the door can be opened) to the landing position (=floor position) is grasped. The elevator controller 109 decelerates the car 100 according to the remaining distance and stops it at the floor position.

Further, when the moving car 100 is to land on the floor position, according to step 401 described above, the car 100 moves in the hoistway and moves to the upper limit (downward) within the range of the door-openable position. ) or reaches the lower limit (in the case of upward movement), the output of the door-openable position output unit 22, that is, the output signal of the first position detector 1 (see FIG. 3) is turned OFF (the door cannot be opened). ) to the ON state (door openable). When receiving such an output signal ON edge, the elevator controller 109 detects the remaining distance to the landing position (=door open position) because the dimension of the detected object 2 is preset according to the width of the position where the door can be opened. possible position width) can be grasped. The elevator controller 109 may grasp the remaining distance by acquiring the data of the width of the door openable position of each floor stored in the storage device of the controller itself. The elevator controller 109 decelerates the car 100 according to the remaining distance and stops it at the floor position.

Next, the abnormality determination processing of the second position detector executed by the abnormality determination section 23 will be described.

FIG. 8 is a flow chart showing the abnormality determination processing of the second position detector executed by the abnormality determination section. In addition, unless otherwise specified in the following description, it is the abnormality determination unit 23 (FIG. 2) that executes each process.

First, in step 500, it is determined whether or not the ON edge of the output of the first position detector 1 has been detected. 506).

When the ON edge of the output of the first position detector 1 is detected ("Y" in step 500), the position A', which is the output of the second position detector 3, is stored in step 501. Next, in step 502, it waits until the OFF edge of the output of the first position detector 1 is detected.

If the OFF edge of the output of the first position detector is detected ("Y" in step 502), then in step 503 the position B', which is the output of the second position detector 3, is stored.

Next, in step 504, the floor position (A+B)/2 which has already been measured and stored in the DB 21 is compared with the floor position (A'+B')/2 measured this time. That is, it is determined whether the magnitude of the difference between (A+B)/2 and (A'+B')/2 is greater than a predetermined allowable value .delta., and if the difference is greater than the set value .delta. "Y"), and outputs a notice of abnormality of the second position detector 3 (output of determination result) to the door-openable position output unit 22 (step 505).

In step 504, the floor position measurement results are accumulated each time, and based on the tendency of the floor position change, abnormality of the second position detector 3 is judged and the timing of occurrence of abnormality is determined. You can predict. Therefore, means for predicting the occurrence of an abnormality will be described.

FIG. 9 is a diagram showing an example of temporal changes in floor position measurement results. This example shows the result of plotting the measurement result of the floor position on a certain floor in chronological order. In FIG. 9, the vertical axis represents floor position, and the horizontal axis represents time.

The abnormality determination unit 23 measures the floor position each time the car 100 passes through the floor, including the floor position (A+B)/2 measured initially, and stores the floor position in a storage device (not shown). Then, from the accumulated floor position data before the current time and the currently measured floor position data, the tendency of the time change of the deviation of the floor position from (A+B)/2 is estimated. Based on the estimated trend, the abnormality determination unit 23 predicts the time when the floor position deviation reaches the allowable value δ in the future, and outputs the predicted time to the elevator operation control system such as the elevator controller 109 .

The time at which the floor position deviation reaches the allowable value δ can be output to the elevator operation control system side as described above, so that the maintenance worker can acquire it as operation information. Therefore, by performing a measurement operation for measuring the floor position at the time of inspection before reaching the expected time, the output value of the second position detector 3 is affected by aging factors (for example, the object 4 elongation and compression of the building itself over time) can be compensated for. As a result, it is possible to suppress the deviation of the position where the door can be opened due to the deviation of the floor position data, and the position deviation of the car when landing when the floor position data in the safety controller 110 is used for the landing control. can be done.

The door-openable position data output by the door-openable position output unit 22 ( FIG. 2 ) is used for controlling the elevator controller 109 and other safety functions 24 included in the safety controller 110 . These safety functions include, for example, UCMP (Unintended Car Moving Protection) and ETSD (Emergency Terminal Speed-limiting Device), which detect the position of the car and the door switch A door open detection value and a car speed detection value are used.

According to the above-described embodiment, the safety controller 110 sets the output of the first position detector as the door-openable position used for elevator control when an abnormality occurs in the second position detector 3 . As a result, the door-openable position can be set with high reliability. Further, even if the second position detector 3 malfunctions, the car 100 can be retracted and the car door 112 can be opened and closed at the door-openable position.

In addition, while the car 100 is being operated for measurement, the safety controller 110 detects the second The output value of the position detector 3 is obtained, and the obtained output value is used to calculate the floor position (floor landing position) of each floor and the range of possible door opening positions, and set in the DB 21 . Therefore, at the time of installation, work for setting the floor position and the door openable position to the safety controller 110 and the elevator operation control system (elevator controller 109, etc.) is reduced. Also, the work of resetting the floor position and the door-openable position is likewise reduced.

Furthermore, from the output value of the second position detector 3 acquired according to the output (ON edge and OFF edge) of the first position detector 1, the range of the floor position (landing position) and the door openable position is calculated, even if the output value of the second position detector 3 fluctuates due to aging of the object to be detected 4 for detecting the absolute position of the car 100 or aging of the building, the influence thereof is compensated. , the floor position and the door openable position can be reliably set.

In the embodiments described above, the safety controller 110 and the elevator operation control system (including the elevator controller 109) each have independent position sensing devices. That is, the safety controller 110 includes a first position detector 1 and an object to be detected 2, and a second position detector 3 and an elongated object to be detected 4, while the elevator controller 109 includes a rotary encoder or the like. of pulse generator 107 . However, the elevator controller 109 acquires from the safety controller 110 data on the floor position and the door openable position used for control (for example, landing control). The position detection is not limited to such a form. For example, as an independent position detection device, the safety controller 110 is provided with the second position detector 3 and the detected object 4, and the elevator controller 109 is provided with a pulse detector such as a rotary encoder. The safety controller 110 and the elevator controller 109 may share the first position detector 1 and the detected object 2 together with the generator 107 . In this case, the first position detector 1 and the object to be detected 2 are used in the safety controller 110 to set the above-described floor position and door openable position, and in the elevator controller 109 normal control (floor landing control). etc.).

Further, the DB creation processing shown in FIG. 6 is executed not only during elevator installation but also during maintenance. For example, when the first position detector and the detected object 2 are displaced due to an earthquake or the like, the installation position is returned to the original position, and then the DB creation process is executed. The DB creation process is also executed when the abnormality determination unit 23 determines that there is an abnormality. As a result, the reliability of the data on the floor position and door openable position stored in the DB 21 is improved.

In addition, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Moreover, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

For example, the elevator system may be of the machine room-less type, where the hoist and controller are installed within the hoistway.

In addition, when a plurality of elevators arrive and depart at one landing, as a degenerate operation, the elevator in which an abnormality has occurred may be stopped, and the service operation may be continued with a smaller number of elevators than usual.

1 First Position Detector 2 Detected Object 3 Second Position Detector 4 Detected Object 20 Possible Door Open Position Creation Unit 21 DB (database) 22 Possible Door Open Position Output Unit 23 Abnormality Determination unit 100 car 104 sheave 105 deflection wheel 106 electric motor 107 pulse generator 108 power converter 109 elevator controller 110 safety controller 111 landing door 112 car door 113 counterweight 115 landing

Claims (10)

a position detection device that detects the position of the car in the hoistway;
an elevator controller that controls operation of the car;
a safety controller independent of the elevator controller, which outputs a signal indicating whether or not the door is in a position where the door can be opened, which is used for control by the elevator controller, based on the output of the position detection device;
In an elevator device comprising:
The position detection device is
A first position detection unit having a first detection object provided at a position corresponding to a floor position in the hoistway, and a first position detector for detecting the first detection object When,
a second position detection unit that detects the absolute position of the car in the hoistway;
has
The safety controller is
a database storing data of the door openable position;
an abnormality determination unit that determines whether there is an abnormality in the second position detection unit based on the output of the second position detection unit;
When the abnormality determination unit determines that there is no abnormality, it is determined whether the output of the second position detection unit is within the data range of the door openable position, and based on the determination result, When the signal indicating whether or not the door is at the door-openable position is output, and the abnormality determination unit determines that there is an abnormality, the first signal indicating whether or not the door-openable position is present. a door openable position output unit that outputs an output signal of the position detection unit;
An elevator device comprising: The elevator apparatus according to claim 1, wherein
The safety controller further:
According to the output signal of the first position detection unit, the output value of the second position detection unit is obtained, and based on the obtained output value, the door can be opened with reference to the floor position. An elevator apparatus, comprising: a door-openable position creation unit that calculates a position and stores the data of the calculated door-openable position in the database. The elevator apparatus according to claim 2,
The door-openable position generating section acquires the output value of the second position detection section according to the ON edge and the OFF edge of the output signal of the first position detection section, and based on the output value and calculating the floor position, and calculating the range of the door-openable position based on the calculated floor position and a predetermined width of the door-openable position. The elevator apparatus according to claim 2,
An elevator apparatus, wherein the elevator controller operates the car at a speed lower than the rated speed. The elevator apparatus according to claim 1, wherein
The abnormality determination unit stores a floor position calculated based on the output of the second position detection unit acquired in response to the output signal of the first position detection unit, and the floor position stored in the database. An elevator apparatus, wherein the presence or absence of an abnormality in the second position detector is determined by comparing the floor position data with the floor position data. In the elevator apparatus according to claim 5,
The elevator apparatus, wherein the abnormality determination unit determines whether or not there is an abnormality in the second position detection unit based on a difference between the calculated floor position and the floor position data. . The elevator apparatus according to claim 1, wherein
The elevator apparatus, wherein the abnormality determination unit accumulates the calculated floor positions in chronological order, and predicts when the abnormality will occur based on the accumulated data. The elevator apparatus according to claim 1, wherein
The elevator apparatus, wherein the elevator controller causes the car to degenerate based on the output signal of the first position detection section when the abnormality determination section determines that there is an abnormality. The elevator apparatus according to claim 1, wherein
The safety controller further:
When it is determined that there is an abnormality, the output value of the second position detection unit is acquired according to the output signal of the first position detection unit, and the floor position is determined based on the acquired output value. An elevator apparatus, comprising: a door-openable position creation unit that calculates the door-openable position as a reference and stores the data of the calculated door-openable position in the database. An elevator apparatus according to claim 9, wherein
An elevator apparatus, wherein the elevator controller operates the car at a speed lower than the rated speed.

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