CN113874310B - Elevator installation - Google Patents

Abstract

The present invention provides elevator equipment capable of detecting an openable door position with high reliability. The elevator equipment includes a position detection device and a safety controller that outputs a signal indicating whether the door can be opened. A position detection unit (1), and a second position detection unit (3) for detecting absolute positions, the safety controller has a database (21) for storing data on openable positions; an abnormality determination unit for judging the abnormality of the second position detection unit (23); With the door-openable position output part (22), it outputs the judgment result indicating whether the door-openable position is in the range of the data of the openable position based on the output of the second position detection part under the condition of no abnormality If there is an abnormality, the output signal of the first position detection part is output as a signal indicating whether the door can be opened.

Description

elevator equipment

technical field

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

Background technique

In elevator equipment, hall doors are opened and closed in conjunction with car doors. At this time, in order to detect the position where the door can be opened, a position detection device is used. The position detection device is composed of a detection object installed in the hoistway and a position detector (sensor) installed in the car to detect the detection object. For example, as a position detection device, a photoelectric sensor and a light shield are used.

Such a position detection device is applied to a safety device that prevents the car from moving from a door-openable position in a door-open state.

The techniques described in Patent Documents 1 and 2 are known as prior art related to such a position detection device.

In the technique described in Patent Document 1, modularized magnets are attached to the lower portion of the sill of the door on the landing side, and a sensor arranged below the car detects a position where the door can be opened and closed.

In the technology described in Patent Document 2, when the position detector for detecting the object installed on each floor fails, the pulse generator (speed governor encoder) installed in the speed governor mechanism is used to detect Openable position.

prior art literature

patent documents

Patent Document 1: Japanese Patent Application Laid-Open No. 11-246139

Patent Document 2: International Publication No. 2017/168619

Contents of the invention

The problem to be solved by the invention

However, in the technology described in Patent Document 1, when an abnormality occurs in the position detection device, the door-openable position cannot be detected, the reliability of the operation control of the elevator is reduced, and it is difficult to continue the operation of the car.

In addition, in the technology described in Patent Document 2, when the position detector fails, a pulse generator is used instead of the position detector. reduced sex.

Therefore, the present invention provides elevator equipment having a position detection device capable of detecting a door-openable position with high reliability.

Technical solutions for solving problems

In order to solve the above-mentioned problems, the elevator apparatus of the present invention includes: a position detection device for detecting the position of the car in the hoistway; an elevator controller for controlling the operation of the car; and a safety controller independent of the elevator controller, which is based on the position detection The output of the device outputs a signal indicating whether it is a door-openable position, and the door-openable position is used for the control of the elevator controller. The position detection device includes: a first position detection part, which has a position corresponding to the floor ground position arranged in the hoistway. The first detected object of the position and the first position detector for detecting the first detected object; and the second position detection part for detecting the absolute position of the car in the hoistway, the safety controller includes: saving the data of the openable door position the database; the abnormal judgment part, which judges whether the second position detection part has abnormality based on the output of the second position detection part; and the door-openable position output part, which judges the second Whether the output of the position detection part is within the range of the data of the door-openable position, and output a signal indicating whether it is the door-openable position based on the judgment result, and output the first position detection when the abnormality judgment part judges that there is an abnormality. The output signal of the part is used as a signal indicating whether the door can be opened.

Invention effect

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

Description of drawings

Fig. 1 is an overall configuration diagram of elevator equipment according to one embodiment.

FIG. 2 is a block diagram showing the functional configuration of the safety controller in the embodiment.

Fig. 3 is a timing chart showing an example of an output signal of a first position detector during a measurement operation.

FIG. 4 is a timing chart showing an example of output signals of a first position detector and a second position detector.

Fig. 5 is a structural diagram of DB21 (database).

FIG. 6 is a flowchart showing a DB creation process executed by a door-openable position creation unit.

FIG. 7 is a flowchart showing a process of setting a door-openable position executed by a door-openable position generation unit.

8 is a flowchart showing abnormality determination processing of the second position detector executed by the abnormality determination unit.

FIG. 9 is a diagram showing an example of a temporal change in the measurement result of the floor ground position.

Detailed ways

Embodiments of the present invention will be described below using the drawings. In each figure, parts with the same reference numerals indicate the same constituent elements or constituent elements having similar functions.

Fig. 1 is an overall configuration diagram of elevator equipment according to one embodiment of the present invention.

As shown in FIG. 1 , a sheave 104 and a guide wheel 105 are provided on the upper part of the hoistway in a building. The main rope 101 is wound around the sheave 104 and the guide pulley 105 . To one end and the other end of the main rope 101, the car 100 and the counterweight 113 are respectively connected. The car 100 and the counterweight 113 are suspended in the hoistway by such main ropes 101 .

When the sheave 104 is rotationally driven by the electric motor 106 powered by the power converter 108, the main rope 101 is linearly driven. As a result, the car 100 and the counterweight 113 move up and down in mutually opposite directions in the hoistway. In this case, the car 100 moves between a plurality of floors in the hoistway. When the car 100 stops at the destination floor, the car door 112 provided in the car 100 mechanically engages with the hall door 111 provided in the hall 115 . Accordingly, the car door 112 and the hall door 111 are simultaneously driven to open and close by a door driving device (not shown) provided in the car 100 .

In addition, a pulse generator 107 is installed in the motor 106 . The pulse generator 107 generates a pulse signal according to the rotation of the motor 106 . In addition, as the pulse generator 107, for example, a rotary encoder, a synchronous resolver, or the like can be applied. The pulse signal output from the pulse generator 107 is input to the elevator controller 109 . The elevator controller 109 calculates the speed of the motor 106, the equivalent position and moving distance of the car 100 in the moving direction in the hoistway, and the like by counting the pulse signals.

Here, the "equivalent position and moving distance" refer to the position and moving distance of the car in the up-down direction obtained from the rotational displacement of the motor 106 represented by the count value of the pulse signal output by the pulse generator 107. .

On the car 100 , a first position detector 1 is provided at a predetermined distance from the car 100 in the ascending and descending direction of the car 100 . In the hoistway, the object 2 to be detected by the first position detector 1 is installed corresponding to the door-openable position of each floor. Therefore, when the car 100 is located at the door-openable position, the object 2 to be detected 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 objects to be detected 2 (for example, a shutter (optical, magnetic)) are applied according to the sensor used.

The output signal of the first position detector 1 is input to the safety controller 110 . The safety controller 110 is a controller constituting the safety system of the elevator, and controls braking of the car 100 by braking operation and power cut off independently of the elevator controller 109 . The safety controller 110 has a CPU (Central Processing Unit: Central Processing Unit) that executes processing as a main component, and also includes a watchdog timer for detecting CPU abnormalities and a circuit for monitoring power supply abnormalities. In addition, CPUs may be duplexed, and processing abnormalities of the CPUs may be detected by comparing the processing operations of the CPUs with each other.

The second position detector 3 is provided on the car 100 at a predetermined distance from the car 100 in the ascending and descending direction of the car 100 . The output signal of the second position detector 3 is input to the safety controller 110 . In addition, in the hoistway, a long-shaped (belt-shaped, rope-shaped, ribbon-shaped, elongated rod-shaped, etc.) object 4 to be detected is suspended by the second position detector 3 .

The elongated object 4 has, along its longitudinal direction, absolute position information in the vertical direction in the hoistway, for example, height information from a reference floor. This absolute position information is continuously set for the subject 4 by varying the electromagnetic characteristics, optical characteristics, mechanical shape and properties, surface geometric pattern shape, etc. along the longitudinal direction of the subject 4 . In this regard, as the second position detector 3 that detects the absolute position information set for the subject 4, a magnetic sensor, a magnetostrictive sensor, an optical sensor, an image sensor, or the like is applied.

The object 4 to be detected extends from the top to the bottom of the hoistway so that its longer direction is along the height direction in the hoistway. Furthermore, absolute position information is continuously set for the object 4 to be detected from the top portion in the hoistway to the bottom portion in 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 .

As a solution for detecting the absolute position of the car in the hoistway, in addition to this, a rotary encoder installed on the speed governor equipped with a speed governor cable, a toothed belt suspended in the hoistway, and a belt with Absolute encoders for gears, position detection using camera images inside the hoistway, etc.

FIG. 2 is a block diagram showing the functional configuration of the safety controller in this embodiment. In the figure, the inside of the dotted line corresponds to the safety controller 110 (FIG. 1). In addition, in this embodiment, the CPU realizes the functions of each unit by executing a predetermined program.

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

The door-openable position generating unit 20 shown in FIG. 2 generates a door-openable position of the car 100 in the hoistway based on the output signals of the first position detector 1 and the second position detector according to the absolute position from the reference plane of the lower part of the hoistway. As for the data of the position (hereinafter referred to as "the door-openable position"), the generated door-openable position is stored in the DB (database) 21 .

Such a DB 21 is installed between the object 2 and the building floor when the object 2 ( FIG. 1 ) deviates due to an earthquake or the like when the installation of the elevator is completed. Generated when a positional deviation occurs, etc. At this time, an operation for position measurement (hereinafter referred to as "measurement operation") for generating DB 21 is executed by an elevator operation control system (not shown). In addition, when the safety controller 110 receives a door-openable position generation command for instructing generation of DB21 from the elevator operation control system side, it executes the process of generating DB21. In this measurement operation, after the car 100 has moved to the lowermost floor, it is moved from the lowermost floor to the uppermost floor at a predetermined speed lower than the rated speed.

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

When the first position detector 1 detects the object 2, the output signal becomes ON. Therefore, the period in the ON state indicates that the position of the car 100 is a door-openable position. In the present embodiment, at the center time 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") (the time width before and after the figure is the same time as A), the car floor Consistent with the landing ground. Such an output signal can be obtained by making the height of the shutter correspond to the range of the door-openable position and the center of the height direction of the shutter corresponding to the stop position when the object 2 to be detected is, for example, a light shield or a magnetic shield. Obtained by setting the shutter.

In addition, since the measurement operation is performed at a constant speed in position measurement, the output signal waveform of the first position detector 1 is symmetrical with respect to the timing when the positions of the car floor and the hall floor are aligned at each floor.

Next, the outline|summary of the process which uses the output signal of the 1st position detector 1 and the 2nd position detector 3 in the door openable position generation part 20 to generate|occur|produce DB21 is demonstrated.

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

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 (the time when the first position detector 1 starts detecting the detected object 2), it stores the first position at that time. Two output values of the position detector 3 ("A" in FIG. 4). Afterwards, when the door-openable position generator 20 detects the OFF edge of the output signal of the first position detector 1 (the time when the first position detector 1 finishes detecting the object 2), it stores the second position detected at that time. The output value of device 3 ("B" in Fig. 4).

As shown in FIG. 3 , the center of the ON period of the output signal of the first position detector 1 is the moment when the car floor coincides with the hall floor, so the door-openable position generator 20 calculates (A+B)/2 as the car floor The position where the ground is consistent with the landing ground (hereinafter referred to as "floor ground position"). Then, the door-openable position generator 20 sets the width C of the door-openable position in the ascending and descending direction of the car on the basis of the floor ground position ((A+B)/2). That is, the door-openable position generation unit 20 calculates (A+B)/2±C as the upper and lower limits of the door-openable position, thereby setting the door-openable position with a length of 2C around the floor position. In addition, the width C is stored by the security controller 110 in advance.

The door-openable position generating unit 20 performs the above-mentioned processing for each floor, and generates the DB 21 of the door-openable positions for each floor from the lowest floor to the uppermost floor.

Fig. 5 is a structural diagram of DB21. In addition, DB21 is stored in a storage device (not shown) included in the security controller 110 .

DB21 includes floors, the center position of the first position detector 1 (the above-mentioned floor ground position) calculated from the output value (A, B, ...) of the second position detector 3 on each floor, and the center position plus The data of the upper limit and lower limit of the door openable position obtained by subtracting the amplitude (α, β) of the door openable position. In addition, DB21 may also contain the output value (A, B, . . . ) of the second position detector 3 at each floor together with these data.

In addition, as shown in FIG. 5, the width|variety which can open a door can be changed according to a floor.

The door-openable position output unit 22 shown in FIG. 2 determines the door-openable position based on the DB21 and the judgment result output of the abnormality judgment unit 23 that judges whether the second position detector 3 is abnormal as described later, and outputs the door-openable position to the elevator controller. Device 109 (Figure 1) and so on. When the judgment result of the abnormality judgment part 23 is not "abnormal", the door openable position output part 22 refers to DB21, and outputs a door openable position. In addition, the door-openable position output unit 22 outputs the output signal of the first position detector 1 as data indicating the door-openable position when the determination result of the abnormality determination unit 23 is “abnormal”. 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 perform retraction operation.

Here, the retracted operation means to operate at a lower speed than normal (during service operation), to operate with a limited floor range than normal (during service operation), to move to the nearest floor, and the like.

During normal operation (service operation), the abnormality determination unit 23 calculates the floor surface value based on the output value of the second position detector 3 at each time of the ON edge and OFF edge of the output signal of the first position detector 1 . When the size of the difference between the position and the floor ground position data stored in DB 21 exceeds the allowable value, it is determined that the second position detector 3 is abnormal. Then, the abnormality determination unit 23 outputs “abnormality” to the door-openable position output unit 22 as a determination result.

In addition, the smaller the allowable value of the difference, the higher the detection sensitivity of the abnormality and the earlier it can be detected, but the number of retraction operations increases, and the larger the allowable value, the lower the detection sensitivity of abnormality, but the number of retraction operations increases. reduce. Therefore, the allowable value of the difference is appropriately set in consideration of both the detection sensitivity and the frequency of retraction operations.

Such a difference is due to the positional deviation of the detected body 2 caused by the earthquake, the positional deviation between the detected body 2 and the building ground due to the annual change of the building, and the second position detector 3 depending on the well. The expansion and contraction of the object 4 due to the temperature and humidity in the tunnel are generated. Therefore, an abnormality of the position detection means can be detected based on the magnitude of the difference.

Next, the DB generation process performed by the door openable position generation part 20 is demonstrated.

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

First, in step 300, it is judged whether the door-openable position generation command from the outside (elevator operation control system) is ON. When the door openable position creation command is OFF (NO in step 300), the DB creation process is ended (step 301).

When the door-openable position generation command is ON (YES in step 300), in step 302, it is judged whether the output of the first position detector 1 is ON. When the output of the first position detector 1 is OFF ("No" 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), and the external (elevator operation control) After the system) outputs an abnormality, the DB creation process ends (step 304).

Here, in this embodiment, during the measurement operation, the elevator operation control system sets the initial position of the car 100 to the lowest floor (parking position), and drives the car 100 to the uppermost floor. In addition, the elevator operation control system may set the initial position to the uppermost floor and drive the car 100 to the lowermost floor.

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

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

Furthermore, in step 307, it waits until the output of the 1st position detector 1 turns ON again, that is, the next door openable position is detected.

When the output of the first position detector 1 becomes ON again ("Yes" in step 307), in step 308, the output value of the second position detector 3 is stored, and then in step 309, wait until the first position detector The output of 1 turns OFF. At the timing of turning off (YES in step 309), in step 310, the output value of the second position detector 3 is stored again.

Next, according to the stored output value of the second position detector 3, in step 311, calculate the center of the range of the door-openable position ("center" in Fig. 5), that is, the floor ground position, and calculate the calculated floor ground position Save to DB21. Also, the upper and lower limits of the range of door-openable positions are calculated by adding and subtracting predetermined values (α, β in FIG. 5 ) of the door-openable position range to the calculated floor and ground positions, and stored in DB21.

After that, in step 312, the floor N is increased by one floor. That is, the next DB21 creation target floor is set. Next, in step 313, it is judged whether the door-openable position generation command from the outside is OFF, and when it is not OFF ("No" in step 313), the above-mentioned processing is repeatedly executed. If it is OFF (YES in step 313), in step 314, the output value of the second position detector 3 is stored in DB 21 as the uppermost floor floor position, and the process ends (step 315).

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

Next, the processing of setting the door-openable position for control by the door-openable position output unit 22 ( FIG. 2 ) will be described.

FIG. 7 is a flowchart showing a process of setting a door-openable position executed by a door-openable position generation unit. In addition, unless otherwise specified in the following description, the main body that executes each process is the door openable position output part 22 (FIG. 2).

First, in step 400, it is judged whether or not an abnormality notification has been received from the abnormality judging unit 23 (judgment result output). In the case of receiving an abnormal notification ("Yes" 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 output indicates that the second position detector 3 Notification that a failure has occurred. When the elevator controller 109 ( FIG. 1 ) receives the notification that the second position detector 3 has failed, it executes the retraction operation.

In this embodiment, the elevator controller 109 usually uses the door-openable position detected by the second position detector 3 to execute the operation control of the car, but when an abnormality of the second position detector 3 is detected, the first The position detector 1 detects the door-openable position, whereby the operation of the car 100 can be continued despite the retraction operation.

In the case of not receiving the abnormality notification from the abnormality judging section 23 ("No" in step 400), in step 404, it is judged whether the output of the second position detector 3 is within the range of the door-openable position of DB21 (Fig. 5 between the "upper limit" and "lower limit"), if the output of the second position detector 3 is within the range of the door-openable position (Yes in step "404"), the door-openable position is set to ON (the door can be opened) And output (step 405). In addition, if the output of the second position detector 3 is outside the range of the door-openable position ("No" in step 404), the door-openable position is set to OFF (door cannot be opened) and output (step 406).

In the case where the moving car 100 is to be parked at the position on the floor, according to step 405 above, the car 100 moves in the hoistway and reaches the upper limit (in the case of moving downward) or the lower limit ( When moving upward), the door-openable position output unit 22 outputs an ON signal indicating that the door can be opened. When the elevator controller 109 receives the ON signal, it acquires the data of the range (corresponding to α, β of Fig. 5 ) of the door-openable position of each floor saved in the controller or the storage device of the safety controller 110, and obtains the parking position (=floor ground position) remaining distance (=range of door openable position). According to the remaining distance, the elevator controller 109 decelerates the car 100 to stop at the floor position of the floor.

In addition, in the case where the moving car 100 is to stop at the floor position, according to the above-mentioned step 401, the car 100 moves in the hoistway and reaches the upper limit of the range of the door-openable position (in the case of moving downward) or At the lower limit (when moving upward), the output of the openable position output unit 22, that is, the output signal of the first position detector 1 (refer to FIG. 3 ) changes from the OFF state (the door cannot be opened) to the ON state (the door can be opened). . When receiving such an output signal ON edge, because the size of the detected body 2 is preset corresponding to the range of the door-openable position, the elevator controller 109 can know the remaining distance (=the door-openable position) to the stop position. amplitude). In addition, the elevator controller 109 can also obtain the remaining distance by acquiring data on the width of the door-openable position of each floor stored in the storage device of the controller. According to the remaining distance, the elevator controller 109 decelerates the car 100 to stop at the floor position of the floor.

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

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

First, in step 500, it is determined whether the ON edge of the output of the first position detector 1 has been detected, and if the ON edge has not been detected ("No" in step 500), the processing is ended (step 506).

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

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

Next, in step 504, the measured floor position (A+B)/2 stored in the DB 21 is compared with the floor position (A'+B')/2 measured this time. That is, it is judged whether the magnitude of the difference between (A+B)/2 and (A'+B')/2 is greater than the prescribed allowable value δ, and if the difference is greater than the set value δ ("Yes" in step 504), , the abnormality notification (judgment result output) of the second position detector 3 is output to the door-openable position output unit 22 (step 505).

In addition, in step 504, the measurement results of each floor ground position may be accumulated, and the abnormality of the second position detector 3 may be judged or the timing of the abnormality may be predicted based on the tendency of the change of the floor ground position. Then, a method of predicting the occurrence of an abnormality will be described.

FIG. 9 is a diagram showing an example of a temporal change in the measurement result of the floor ground position. This example is the result obtained by plotting the measurement results of the floor ground positions in a certain floor in chronological order. Wherein, in FIG. 9 , the vertical axis represents the floor position, and the horizontal axis represents time.

The abnormality determination unit 23 includes the initially measured floor floor position (A+B)/2, and measures the floor floor position every time the car 100 passes the floor, and accumulates it in a storage device not shown. Then, based on the accumulated floor-ground position data before the present time and the currently-measured floor-ground position data, the temporal variation tendency of the deviation of the floor-ground position compared to (A+B)/2 is estimated. Based on the estimated tendency, the abnormality judgment unit 23 predicts the time when the deviation of the floor ground position in the future will reach the allowable value δ, and outputs the predicted time to the elevator operation control system such as the elevator controller 109 .

The timing at which the deviation of the floor floor position reaches the allowable value δ is output to the elevator operation control system side as described above, and can be acquired by maintenance workers as operation information. Thereby, by performing the measurement operation for measuring the floor ground position during maintenance before the predicted time, it is possible to correct the factors over the years relative to the output value of the second position detector 3 (e.g., the elongation of the object 4). , the building's own years of compression, etc.) to compensate for the impact. Thereby, it is possible to suppress the deviation of the door-openable position due to the deviation of the floor ground position data, and the position deviation of the car when the floor ground position data in the safety controller 110 is used for the parking control, etc. .

In addition, the door-openable position data output by the door-openable position output unit 22 ( FIG. 2 ) is used not only for the control of the elevator controller 109 , but also for other safety functions 24 included in the safety controller 110 . This safety function is, for example, UCMP (Unintended Car Moving Protection) or ETSD (Emergency Terminal Speed-limiting Device: terminal layer deceleration device), etc., in addition to the position detection value of the car, the door opening detection of the door switch is also used. value and the speed detection value of the car.

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

In addition, the safety controller 110 makes the car 100 perform measurement operation, and at the same time obtains the output of the second position detector 1 corresponding to the output of the first position detector 1 installed in the hoistway at a position corresponding to the floor ground position and the door-openable position. 3, use the obtained output value to calculate the floor ground position (parking position) and the range of the door-openable position of each floor, and set it in DB21. Therefore, at the time of installation, the work of setting the floor floor position and the door-openable position to the safety controller 110 and the elevator operation control system (elevator controller 109, etc.) is lightened. In addition, the work of resetting the floor floor position and the door-openable position is also lightened.

Furthermore, since the floor position (parking position) and the range of the door-openable position are calculated based on the output value of the second position detector 3 acquired correspondingly to the output (ON edge and OFF edge) of the first position detector 1, even if The output value of the second position detector 3 fluctuates due to the yearly change of the detected object 4 for detecting the absolute position of the car 100 or the yearly change of the building, and its influence can also be compensated to reliably set the floor. ground position and door-openable position.

In the above embodiments, the safety controller 110 and the elevator operation control system (including the elevator controller 109 ) respectively have independent position detection devices. That is, the safety controller 110 includes the first position detector 1 and the object to be detected 2, the second position detector 3 and the elongated object to be detected 4, while the elevator controller 109 includes a pulse generator such as a rotary encoder. device 107. However, the elevator controller 109 acquires the data of the floor ground position and the openable door position for control (for example, parking control, etc.) from the safety controller 110 . In addition, it is not limited to such a position detection method, for example, as an independent position detection device, the safety controller 110 is equipped with the second position detector 3 and the detected object 4, and the elevator controller 109 is equipped with a rotary encoder, etc. The pulse generator 107, and the first position detector 1 and the object to be detected 2 are shared by the safety controller 110 and the elevator controller 109. In this case, the first position detector 1 and the detected object 2 are used in the safety controller 110 to set the above-mentioned floor ground position and the door-openable position, and are used in the elevator controller 109 for normal control (parking and parking). control, etc.).

In addition, the DB generation process shown in FIG. 6 is performed not only at the time of elevator installation but also at the time of maintenance. For example, when the position of the first position detector and the object 2 is displaced due to an earthquake or the like, the DB creation process is executed after returning the installation position to the original position. In addition, even when the abnormality determination unit 23 determines that it is abnormal, the DB creation process is executed. This improves the reliability of the data of the floor ground position and the openable door position stored in DB21.

In addition, this invention is not limited to the said embodiment, Various modification examples are included. For example, the above-mentioned embodiments have been described in detail to explain the present invention in an easy-to-understand manner, and are not limited to having all the configurations described. In addition, other configurations can be added, deleted, or substituted for part of the configurations of the respective embodiments.

For example, the elevator equipment may be of a machine room-less type in which a hoisting machine and a control device are installed in a hoistway.

In addition, when a plurality of single elevators depart and arrive at one hall, the single elevator in which an abnormality occurs can be stopped as a retreat operation, and the service operation can be continued with a smaller number of single elevators than usual.

Explanation of reference signs

1 first position detector, 2 object to be detected, 3 second position detector, 4 object to be detected, 20 door-openable position generation unit, 21DB (database), 22 door-openable position output unit, 23 abnormality judgment unit, 100 car Car, 104 rope pulley, 105 guide wheel, 106 electric motor, 107 pulse generator, 108 power converter, 109 elevator controller, 110 safety controller, 111 floor station door, 112 car door, 113 counterweight, 115 floor station .

Claims (10)

1. An elevator device, comprising: A position detection device for detecting the position of the car in the hoistway; an elevator controller controlling operation of the car; and a safety controller independent of the elevator controller, which outputs a signal indicating whether it is a door-openable position for control by the elevator controller based on the output of the position detection device, The elevator installation is characterized in that: The position detection device includes: a first position detection unit having a first detected object provided at a position corresponding to a floor ground position in the hoistway; and a first position detector for detecting the first detected object; and a second position detection unit that detects the absolute position of the car within the hoistway, The safety controller includes: a database storing the data of the door-openable positions; an abnormality judging section that judges whether or not the second position detecting section has an abnormality based on an output of the second position detecting section; and A door-openable position output unit that determines whether the output of the second position detection unit is within the range of the data of the door-openable position when the abnormality determination unit determines that there is no abnormality, and based on output the signal indicating whether it is the door-openable position as a result of the judgment, and output the output signal of the first position detection unit as an indication of whether it is the door-openable position when the abnormality determination unit judges that there is an abnormality. The signal for the door open position. 2. Elevator installation as claimed in claim 1, characterized in that: The safety controller further includes a door-openable position generation unit that acquires an output value of the second position detection unit corresponding to the output signal of the first position detection unit, and based on the acquired output value calculating the door-openable position based on the floor ground position, and saving the calculated data of the door-openable position in the database. 3. Elevator installation as claimed in claim 2, characterized in that: The door-openable position generation unit acquires the output value of the second position detection unit corresponding to the ON edge and the OFF edge of the output signal of the first position detection unit, and calculates the output value based on the output value. the floor ground position, and calculate the range of the door openable position based on the calculated floor ground position and the specified range of the door openable position. 4. Elevator installation as claimed in claim 2, characterized in that: The elevator controller operates the car at a speed lower than a rated speed. 5. Elevator installation as claimed in claim 1, characterized in that: The abnormality determination unit compares the floor floor position calculated based on the output of the second position detection unit acquired in accordance with the output signal of the first position detection unit with the stored in the database. The floor ground position data are compared to determine whether there is an abnormality in the second position detection unit. 6. Elevator installation as claimed in claim 5, characterized in that: The abnormality determination unit determines whether or not the second position detection unit is abnormal based on a magnitude of a difference between the calculated floor ground position and the floor ground position data. 7. Elevator installation as claimed in claim 1, characterized in that: The abnormality determination unit accumulates the calculated floor ground positions in chronological order, and predicts a time when an abnormality occurs based on the accumulated data. 8. Elevator installation as claimed in claim 1, characterized in that: The elevator controller causes the car to retract based on the output signal of the first position detection unit when the abnormality determination unit determines that there is an abnormality. 9. Elevator installation according to claim 1, characterized in that: The safety controller further includes a door-openable position generation unit that acquires an output value of the second position detection unit in accordance with the output signal of the first position detection unit when it is determined that there is an abnormality, The door-openable position based on the floor ground position is calculated based on the acquired output value, and the calculated data of the door-openable position is stored in the database. 10. Elevator installation as claimed in claim 9, characterized in that: The elevator controller operates the car at a speed lower than a rated speed.

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