JP7229188B2 - Elevator system and car localization method - Google Patents

Description

TECHNICAL FIELD The present invention relates to an elevator system and a car position specifying method, and is suitable for application, for example, to an elevator system and a car position specifying method for specifying the position of an elevator car.

A remote monitoring system that detects elevator abnormalities uses information from the control device that controls the elevator to detect abnormalities in the position of the car, abnormal speed of the car, and failure to confine the car. Notifications are sent to the control center, terminals of maintenance personnel, etc. Further, in the remote monitoring system, the current position of the elevator car is specified by acquiring the position information of the car output from the control device that controls the elevator.

However, in the case of an elevator that cannot use the control information output from the elevator control device, such as an old-fashioned relay type elevator, the control information cannot be collected. For this reason, a remote monitoring system for remotely monitoring the operation of an elevator cannot collect elevator control information including the floor where the car is stopped, and cannot grasp the current position of the car. Therefore, a technique of specifying the position of the car from the output value of an external air pressure sensor, an external acceleration sensor, or the like is used instead of the control information output from the control device (see Patent Document 1).

The car position specifying device described in Patent Document 1 detects the movement and current position of the car from the output values of the air pressure sensor and the acceleration sensor, and counts the number of times the door of each floor is opened and closed by the acceleration sensor. The car position specifying device sets a reference floor based on the number of times the door is opened and closed, and corrects the air pressure for detecting the floor when the air pressure on the reference floor fluctuates.

Here, the detection of the current position of the car using the external sensor has the problem that the position of the car cannot be reliably detected after the elevator recovers from the power outage.

In this regard, in the car position specifying device described in Patent Document 1, after the elevator recovers from the power failure, the acceleration sensor detects the running and stopping of the elevator, and when the measurement of the air pressure on all floors is completed, the floor By performing the process of updating the air pressure for detecting the floor, it is possible to detect the position of the car after recovery from a power outage.

JP 2019-199347 A

In the technique described in Patent Document 1, in order to detect the position of the car after recovery from the power failure, the car needs to stop on all floors after recovery from the power failure. However, elevators are used for a wide variety of purposes, and there are cases where elevators do not stop on all floors, such as not stopping on specific floors. In that case, it becomes impossible to detect the position of the car after recovery from the power failure state.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above points, and intends to propose an elevator system or the like capable of appropriately detecting the position of a car.

In order to solve such a problem, the present invention provides an elevator system comprising an identifier provided in a hoistway of an elevator, and a detector provided in a car of the elevator for detecting the identifier, , a storage unit for storing the height of the floor of the elevator, an air pressure measuring unit provided in the car for measuring air pressure at a height where the identifying object detected by the detecting unit is, and the identifying object. a calculation unit for calculating the air pressure of each floor of the elevator based on the air pressure at a certain height and the height of the floor stored in the storage unit; and each floor calculated by the calculation unit and a specifying unit for determining the position of the car from the air pressure measured by the air pressure measuring unit.

In the above configuration, when an identifying object provided in the hoistway is detected, the air pressure at a certain height of the identifying object is measured, and the measured air pressure and the height of the floor stored in the storage unit are combined. Based on this, the atmospheric pressure of each floor is calculated. According to the above configuration, by detecting the identifying object, the position of the car can be identified by comparing the measured air pressure with the calculated air pressure of each floor. , the position of the car can be easily detected.

ADVANTAGE OF THE INVENTION According to this invention, a highly reliable elevator system etc. can be implement|achieved.

It is a figure showing an example of composition concerning an elevator system by a 1st embodiment. It is a figure which shows an example of the installation aspect of the magnet by 1st Embodiment. It is a figure showing an example of composition concerning a position pinpointing device by a 1st embodiment. FIG. 7 is a diagram showing an example of a flowchart relating to atmospheric pressure calculation processing according to the first embodiment; FIG. 7 is a diagram showing an example of a flowchart relating to atmospheric pressure correction processing according to the first embodiment; FIG. 4 is an image diagram showing the relationship between calculated atmospheric pressure and actual atmospheric pressure according to the first embodiment; FIG. 7 is a diagram showing an example of a flowchart relating to abnormality detection processing according to the first embodiment;

One embodiment of the present invention will be described in detail below with reference to the drawings. In this embodiment, a technique for detecting the position of an elevator car will be mainly described.

In the elevator system shown in the present embodiment, for example, an identifier capable of identifying the predetermined floor is provided on a predetermined floor of the elevator, and the identifier is detected by a sensor provided in the car. The position of the car can be easily detected.

Here, any floor can be adopted as the predetermined floor. As the predetermined floor, a floor through which the car frequently passes is suitable. Furthermore, the predetermined floor is preferably a floor where the car stops frequently. The number of predetermined floors may be one or may be plural. In the present embodiment, the uppermost floor (top floor), the middle floor (intermediate floor), and the lowest floor (lowest floor) are given as examples of the predetermined floors. However, it is not limited to this.

Further, the identifier is an object capable of identifying a predetermined floor, such as a magnet, an RF (Radio Frequency) tag, a slit, a marker, or the like. Examples of the sensor include a magnetic sensor when the identifier is a magnet, an RF compatible scanner and reader/writer when the identifier is an RF tag, and a photoelectric sensor and an identifier when the identifier is a slit. is a marker, an image sensor is used. In this embodiment, a magnet is used as an example of an identifier, but the identifier is not limited to this.

In the following description, when the same type of elements are described without distinguishing between them, common parts (parts excluding the branch numbers) of the reference numerals including the branch numbers are used to distinguish between the same types of elements. In some cases, reference signs with branch numbers are used. For example, when describing the magnets without distinguishing them, they are described as "magnet 107", and when describing each magnet separately, they are described as "magnet 107-1", "magnet 107-2", and so on. may be described.

(1) First Embodiment In FIG. 1, 100 indicates an elevator system according to the first embodiment as a whole. FIG. 1 is a diagram showing an example of the configuration of an elevator system 100. As shown in FIG.

Elevator system 100 comprises elevator car 101 , hoist 102 , counterweight 103 , pulley 104 , main rope 105 , locator 106 and magnet 107 .

The hoist 102 is a device for raising and lowering the car 101 . The counterweight 103 is a weight that reduces the load when the car 101 is raised and lowered. A pulley 104 is a pulley for avoiding contact between the car 101 and the counterweight 103 . The main rope 105 is a rope that connects the car 101 and the counterweight 103 . The position specifying device 106 is installed on the car of the car 101 and detects the magnet 107 to specify the position (floor, altitude, etc.) of the car 101 . In addition, below, the case where the position identification apparatus 106 identifies the floor of the car 101 is mentioned as an example, and is demonstrated.

A magnet 107-1 for detecting the top floor is installed on the top floor. Intermediate floors are provided with magnets 107-2 for intermediate floor detection. A magnet 107-3 for detecting the lowest floor is installed on the lowest floor.

FIG. 2 is a diagram showing an example of how the magnet 107 is installed.

The top floor detection magnet 107-1 is installed near the landing door 201-1 on the top floor in the hoistway where the car 101 ascends and descends so that the N pole side is on the hoistway side. The top floor detection magnet 107-1 is installed at a position closest to the position specifying device 106 when the car 101 stops at the top floor.

Intermediate floor detection magnet 107-2 is divided into intermediate floor detection magnet 107-2A installed so that the N pole side faces the hoistway side, and intermediate floor detection magnet 107-2A installed so that the S pole side faces the hoistway side. , and the magnet 107-2B. The intermediate floor detection magnet 107-2A and the intermediate floor detection magnet 107-2B are installed near the landing door 201-2 on the intermediate floor in the hoistway. Intermediate floor detection magnet 107-2A and intermediate floor detection magnet 107-2B are installed at positions closest to position specifying device 106 when car 101 stops at an intermediate floor.

The lowest floor detection magnet 107-3 is installed near the landing door 201-3 of the lowest floor in the hoistway in which the car 101 ascends and descends so that the south pole side is on the hoistway side. The lowest floor detection magnet 107-3 is installed at a position closest to the position specifying device 106 when the car 101 stops at the lowest floor.

Note that the installation position of the magnet 107 is an example, and is not limited to the position shown in FIG. For example, the magnet 107 may be installed on the top of the landing door 201, may be installed on the side of the landing door 201, or may be installed at another position.

FIG. 3 is a diagram showing an example of the configuration of the position specifying device 106. As shown in FIG.

The position specifying device 106 includes a storage section 301 , a detection section 302 , an air temperature measurement section 303 , an air pressure measurement section 304 and a computer section 305 .

The storage unit 301 is, for example, a storage device such as a ROM (Read Only Memory) or HDD (Hard Disk Drive), and stores information related to the car 101 . The storage unit 301 stores, for example, the elevations of all floors in association with each floor.

The detection section 302 is composed of an N pole detection section 302-1 and an S pole detection section 302-2. The N-pole detection unit 302-1 is, for example, a magnetic sensor that detects the N-pole of the magnet 107, and the magnet 107-1 for detecting the top floor and the magnet 107 for detecting the middle floor installed in the hoistway. -2A is detected. The south pole detection unit 302-2 is, for example, a magnetic sensor that detects the south pole of the magnet 107, and detects the middle floor detection magnet 107-2B and the lowest floor detection magnet 107-3.

The air temperature measuring unit 303 is, for example, an air temperature sensor, and measures (detects) the air temperature around the car 101 .

The atmospheric pressure measurement unit 304 is, for example, an atmospheric pressure sensor, and measures (detects) the atmospheric pressure around the car 101 .

The computer unit 305 is, for example, a computer, and includes a CPU (Central Processing Unit) 310 , a memory 320 and a communication interface 330 .

The functions of the computer unit 305 (the calculation unit 321, the identification unit 322, etc.) may be realized, for example, by the CPU 310 reading a program into the memory 320 and executing it (software), or by hardware such as a dedicated circuit. It may be realized, or it may be realized by combining software and hardware. Also, part of the functions of the computer section 305 may be implemented by another computer that can communicate with the computer section 305 .

Calculation unit 321 calculates car 101 based on information from storage unit 301, N pole detection unit 302-1, S pole detection unit 302-2, air temperature measurement unit 303, and air pressure measurement unit 304. Calculates (estimates) the air pressure that will be detected by the air pressure measurement unit 304 when the vehicle stops at each floor.

The calculation unit 321 determines where the car 101 stops on the top floor, the middle floor, or the bottom floor from the information (measurement values) from the detection unit 302-1 for the N pole and the detection unit 302-2 for the S pole. to detect whether When only the N-pole magnet 107 is detected, the calculator 321 detects only the N-pole magnet 107 on the top floor, and when the S-pole magnet 107 is detected, the middle floor and S-pole magnet 107 only The floor is discriminated by the combination of the detected N pole magnet 107 and S pole magnet 107, such as the lowest floor when it is detected.

Further, the calculation unit 321 stores the air pressure (atmospheric pressure data) for each floor used to detect the position of the car 101 in a predetermined storage area (storage unit 301, memory 320, other computer, etc.). It has a storage function and a reference data storage function for storing the air pressure and temperature when the car 101 arrives at the top floor, middle floor, and bottom floor in a predetermined storage area.

The identification unit 322 compares the air pressure measured by the air pressure measurement unit 304 with the air pressure for each floor calculated by the calculation unit 321, and selects the floor where the air pressure is closest to the floor where the car 101 is currently located. Identify (detect) as a floor. For example, the atmospheric pressure measured by the atmospheric pressure measurement unit 304 is "1009.75 (hPa)", the atmospheric pressure on the first floor calculated by the calculation unit 321 is "1010.00 (hPa)", and the calculation unit If the atmospheric pressure of the second floor calculated in 321 is "1009.70 (hPa)", the identification unit 322 identifies the floor on which the car 101 is currently located as the second floor.

Next, a process for calculating the air pressure for each floor (atmospheric pressure calculation process) for identifying the position of the car 101 will be described with reference to the flowchart shown in FIG.

FIG. 4 is a diagram showing an example of a flowchart relating to atmospheric pressure calculation processing. The atmospheric pressure calculation process indicates the process after the position specifying device 106 is powered on and the position specifying device 106 is activated. The atmospheric pressure calculation process is executed at a predetermined timing (for example, periodically until the process of step S404 or step S408 is performed).

In step S401, when the power is turned on, the position specifying device 106 uses the N pole detection unit 302-1 and the S pole detection unit 302-2 to detect the top floor installed in the hoistway. Whether the magnet 107-1, the magnet 107-2 for detecting the middle floor, or the magnet 107-3 for detecting the bottom floor is detected for the first time (the top floor, the middle floor, or the bottom floor is detected for the first time). or not). If the position specifying device 106 determines that the magnet 107 has been detected for the first time, the process moves to step S402, and if it determines that the magnet 107 has not been detected for the first time, the process moves to step S405.

In step S402, the position specifying device 106 stores the air temperature measured by the air temperature measurement unit 303 and the air pressure measured by the air pressure measurement unit 304 for each detected floor (detection floor). For example, if the detected floor is the lowest floor, the position specifying device 106 stores the measured temperature and atmospheric pressure in association with the lowest floor.

In step S403, the position specifying device 106 uses the air temperature measured by the air temperature measurement unit 303, the air pressure measured by the air pressure measurement unit 304, and the altitude of each floor stored in advance in the storage unit 301 by a maintenance tool (not shown) to Calculate the atmospheric pressure of each floor.

Here, the position specifying device 106 calculates the atmospheric pressure of each floor using a altimeter formula that indicates the relationship between atmospheric pressure, temperature, and altitude, for example, the following (Equation 1).

P = P0 x ((1-0.0065 x h) / (T + 0.0065 x h + 273.14)) ^5.257 ... (Formula 1)
P: pressure, P0: sea level pressure, h: altitude, T: temperature

More specifically, first, the position specifying device 106 substitutes the measured temperature (T) and atmospheric pressure (P) and the altitude (h) of the detection floor stored in the storage unit 301 into (Equation 1) to obtain the sea level Calculate the atmospheric pressure (P0). Next, for each floor, the position specifying device 106 calculates the measured air temperature (T), the calculated sea level pressure (P0), and the altitude (h) of the floor stored in the storage unit 301 (formula 1) to calculate the atmospheric pressure of each floor. Here, the temperature is assumed to be constant on all floors, and the measured temperature (T) is used.

In step S404, the position specifying device 106 performs settings such as storing the calculated air pressure of each floor in order to specify the floor based on the calculated air pressure. Based on the settings, the position specifying device 106 compares the air pressure measured by the air pressure measurement unit 304 with the air pressure of each floor calculated by the calculation unit 321, and identifies the floor of the car 101. can be done.

In step S405, the position specifying device 106 detects the magnets 107 installed on the floors other than the floor detected in step S401 by the N pole detection unit 302-1 and the S pole detection unit 302-2. (Whether a floor other than the first detected floor is detected) is determined. If the position specifying device 106 determines that the magnet 107 installed on another floor has been detected, the process proceeds to step S406, and if it determines that the magnet 107 installed on another floor has not been detected. , the atmospheric pressure calculation process ends.

In step S406, the position specifying device 106 stores the air temperature measured by the air temperature measurement unit 303 and the air pressure measured by the air pressure measurement unit 304 for each detected floor (detection floor). For example, if the detected floor is an intermediate floor, the position specifying device 106 stores the measured temperature and atmospheric pressure in association with the intermediate floor.

In step S407, the position specifying device 106 calculates the air pressure of each floor from the straight line connecting the air pressure stored in step S402 and the air pressure stored in step S406.

Note that when there are three or more floors to be detected, the process of step S407 may or may not be performed. When the process of step S407 is performed, the position specifying device 106 obtains an approximate straight line by, for example, the least-squares method to calculate the atmospheric pressure of each floor.

In step S408, the position specifying device 106 performs settings such as storing the calculated air pressure of each floor in order to specify the floor based on the calculated air pressure. Based on the settings, the position specifying device 106 compares the air pressure measured by the air pressure measurement unit 304 with the air pressure of each floor calculated by the calculation unit 321, and identifies the floor of the car 101. can be done.

Here, the atmospheric pressure of each floor calculated in step S403 is calculated based on the assumption that the temperature is constant on each floor based on the floor detected in step S401 and the temperature and atmospheric pressure at that time. value. Therefore, there may be deviation from the actual atmospheric pressure of each floor (see FIG. 6).

In consideration of this point, in the elevator system 100, when the air pressure on two floors can be measured, by recalculating the air pressure on each floor from the measured air pressure difference, the calculation result can be more accurately reflected to the actual air pressure. bring closer.

In other words, the atmospheric pressure changes with changes in the environment such as temperature even at the same altitude. Therefore, it is preferable to perform a process (atmospheric pressure correction process) for correcting the atmospheric pressure for each floor used to detect the position of the car 101 as the atmospheric pressure changes.

FIG. 5 is a diagram showing an example of a flowchart relating to atmospheric pressure correction processing. The atmospheric pressure correction process is performed at a predetermined timing (for example, periodically, at a pre-specified time). For example, by performing atmospheric pressure correction processing all the time, when the atmospheric pressure changes, the atmospheric pressure is corrected immediately, and erroneous detection of the position of the car 101 can be prevented.

In step S501, position specifying device 106 detects magnet 107 detected in step S401 or step S405 by N pole detection unit 302-1 and S pole detection unit 302-2 (atmospheric pressure (whether or not the floor on which the measurement was performed has been detected). If the position identifying device 106 determines that the floor on which the air pressure was measured has been detected, the process proceeds to step S502, and if it determines that the floor on which the air pressure was measured has not been detected, the air pressure correction process exit.

In step S502, the position specifying device 106 compares the first atmospheric pressure measured in step S402 or step S405 with the current atmospheric pressure measured by the atmospheric pressure measurement unit 304 to determine whether the difference in atmospheric pressure is equal to or greater than a threshold value. determine whether or not If the position identifying device 106 determines that the difference in atmospheric pressure is equal to or greater than the threshold, the process proceeds to step S503, and if it determines that the difference in atmospheric pressure is less than the threshold, the atmospheric pressure correction process ends.

In step S503, the position specifying device 106 performs the atmospheric pressure calculation process shown in FIG.

Due to changes in air temperature, etc., the amount of change in air pressure on the detected floor is 50 of the difference in air pressure between the floors before and after the detected floor (for example, when an intermediate floor is detected in FIG. 6, the 3rd and 5th floors are applicable). %, the measurement process using the position of the car 101 will be affected. Therefore, a predetermined value smaller than 50% (for example, 30%) is set as the threshold. For example, the atmospheric pressure on the detection floor is 1009.10 (hPa), the atmospheric pressure on the third floor is 1009.40 (hPa), the atmospheric pressure on the fifth floor is 1008.80 (hPa), and the predetermined value is 30%. , the threshold is 0.09 (hPa). If the threshold for the 3rd floor and the threshold for the 5th floor are different, the smaller threshold is used.

According to the above-described processing, even if the air pressure changes due to environmental changes such as temperature, the change in air pressure can be detected and the air pressure of each floor can be corrected. can be done.

Further, since the elevator system 100 can reliably detect the predetermined floor on which the magnet 107 is provided, it is possible to detect changes in atmospheric pressure on the same floor. Therefore, it is possible to reliably update the atmospheric pressure for floor detection due to changes in the atmospheric pressure.

FIG. 6 is an image diagram showing the relationship between the atmospheric pressure calculated by the position specifying device 106 and the actual atmospheric pressure.

FIG. 6 shows an example of a graph 601 that connects the air pressure of each floor calculated from the air pressure and temperature of the lowest floor and the altitude of each floor, and a graph 602 that shows the actual air pressure. As shown in FIG. 6, the calculated atmospheric pressure of each floor may deviate from the actual atmospheric pressure of each floor. preferred. For example, the atmospheric pressure of each floor calculated based on the atmospheric pressure of a predetermined floor may be corrected to the actual atmospheric pressure by measuring the atmospheric pressure on some or all floors other than the predetermined floor. Further, for example, when the air pressure of each floor calculated based on the air pressure of a predetermined floor is calculated based on the air pressure of another floor different from the predetermined floor, the air pressure of the predetermined floor and the air pressure of the other floors Other atmospheric pressures may be calculated and corrected from the floor atmospheric pressure.

Next, processing for detecting an abnormality in an elevator (abnormality detection processing) will be described using the flowchart shown in FIG.

FIG. 7 is a diagram showing an example of a flowchart relating to abnormality detection processing. The abnormality detection process is executed at a predetermined timing (for example, periodically, at a pre-specified time).

In step S<b>701 , the position specifying device 106 measures air pressure using the air pressure measurement unit 304 .

In step S702, the position specifying device 106 calculates the height of the car 101 based on the measured atmospheric pressure. For example, the position identifying device 106 calculates the altitude corresponding to the measured atmospheric pressure on the straight line calculated in step S407. Note that the position specifying device 106 may calculate the position of the car 101 in the hoistway (for example, the height from the bottom of the hoistway) based on the altitude.

In step S<b>703 , the position specifying device 106 stores the calculated height of the car 101 in the memory 320 .

In step S704, the position specifying device 106 determines whether the car 101 has passed through a predetermined range. If the position specifying device 106 determines that the car 101 has passed through the predetermined range, the process proceeds to step S705, and if it determines that the car 101 has not passed through the predetermined range, the abnormality detection process ends. do.

The position specifying device 106 determines whether or not the predetermined range has been passed based on information indicating a predetermined height range. For example, the memory 320 stores information indicating a predetermined height range (upper limit height and lower limit height) for each floor. Note that each predetermined height range includes the magnets 107 of each floor. In this case, when the elevator car 101 is ascending, the position specifying device 106 determines that the elevator car 101 has passed through the predetermined range when the height of the elevator car 101 exceeds the upper limit height. When 101 is descending, it is determined that the predetermined range has been passed if the height is below the lower limit.

In step S705, the position specifying device 106 determines whether or not the magnet 107 is detected. If the position identifying device 106 determines that the magnet 107 is detected, it ends the abnormality determination process, and if it determines that the magnet 107 is not detected, the process proceeds to step S706.

Although illustration is omitted, when the detection unit 302 detects the magnet 107 at an appropriate timing up to step S704, the position specifying device 106 transmits information (detection information) indicating that the magnet 107 has been detected. The detected information is stored in the memory 320 and erased at an appropriate timing after the determination in step S705 is finished.

In step S706, the position specifying device 106 outputs information regarding the abnormality of the elevator. For example, the position specifying device 106 notifies the magnet 107 or the detection unit 302 that there is an abnormality (failure state) via the communication interface 330 to the outside (elevator control device, control center terminal, maintenance staff terminal, etc.). Output.

In this way, in the abnormality detection process, even though the position specifying device 106 detects that the car 101 has passed the height at which the magnet 107 is supposed to be installed, the magnet 107 cannot be detected. , detachment of the magnet 107 , failure of the detection unit 302 , etc., and notifies the failure state to the outside via the communication interface 330 .

According to the present embodiment, for example, a magnet is installed on the floor that serves as a reference for detecting the position of the car, and the installed magnet is detected by a magnetic sensor installed in the car, thereby recovering from the power failure state. Even in this case, it is possible to easily detect the position of the car. Further, for example, changes in air pressure due to environmental changes such as air temperature can be detected, and the air pressure of each floor required for floor detection can be easily updated, thereby preventing erroneous detection of the position of the car.

(2) Supplementary Notes The above-described embodiments include, for example, the following contents.

In the above-described embodiment, the case of applying the present invention to an elevator system was described, but the present invention is not limited to this, and can be widely applied to various other systems, devices, methods, and programs. can.

Further, in the above-described embodiment, the position specifying device 106 is installed on the car 101, but the present invention is not limited to this. It may be installed below, or may be installed on the side of the car 101 . In this case, the installation position of the magnet 107 is provided at a position corresponding to the position specifying device 106 .

Further, in the above-described embodiment, the position specifying device 106 includes the storage unit 301 and the temperature measurement unit 303, but the present invention is not limited to this, and the position specifying device 106 includes the storage unit 301 and The air temperature measurement unit 303 may not be provided. In this case, the storage unit 301 and the air temperature measurement unit 303 are provided at arbitrary places and are provided so as to communicate with the position specifying device 106 . For example, the storage unit 301 may be provided in a control center. Also, for example, the air temperature measurement unit 303 may be provided in the hoistway.

Further, in the above-described embodiment, a case has been described in which the floor is discriminated by the combination of the detected N-pole magnet 107 and the S-pole magnet 107, but the present invention is not limited to this. The floor may be determined based on the number, or the floor may be determined based on the arrangement of the detected magnets 107 . As for the arrangement of the magnets 107, for example, the magnets 107 are provided only on the left side on the top floor, on both sides on the middle floor, and only on the right side on the bottom floor.

Further, in the above-described embodiment, in steps S401, S405, and S501, the case of determining whether or not the detection unit 302 has detected the magnet 107 was described, but the present invention is not limited to this, It may be determined whether or not the detection unit 302 has detected the magnet 107 at a predetermined time and/or with a predetermined intensity (for example, whether or not the car 101 has stopped at the detected floor).

In the above description, information such as programs, tables, and files that implement each function is stored in a memory, hard disk, SSD (Solid State Drive), or other storage device, or recorded on an IC card, SD card, DVD, or the like. You can put it on the medium.

The embodiments described above have, for example, the following characteristic configurations.

An identifier (for example, magnet 107) provided in the hoistway of the elevator, and a detector (for example, detector 302) provided in the car (for example, car 101) of the elevator to detect the identifier. and a storage unit (e.g., elevator system 100) that stores the height of the floor of the elevator (elevation, height in the hoistway calculated based on the elevation, etc.) ( For example, a storage unit 301) and an air pressure measurement unit (for example, air pressure measurement unit 304), and based on the atmospheric pressure at the height of the identifying object and the height of the floor stored in the storage unit, calculate the atmospheric pressure of each floor of the elevator (see step S403, for example). The position of the car is obtained from the calculation unit (for example, the calculation unit 321), the air pressure of each floor calculated by the calculation unit, and the air pressure measured by the air pressure measurement unit (see step S404, for example). and a specifying unit (eg, specifying unit 322).

In the above configuration, when an identifying object provided in the hoistway is detected, the air pressure at a certain height of the identifying object is measured, and the measured air pressure and the height of the floor stored in the storage unit are combined. Based on this, the atmospheric pressure of each floor is calculated. According to the above configuration, by detecting the identifying object, the position of the car can be identified by comparing the measured air pressure with the calculated air pressure of each floor. , the position of the car can be easily detected.

For example, the calculation unit calculates , based on the air pressure of a predetermined floor, the air temperature in the elevator, and the altitude stored in the storage unit, a altimeter formula showing the relationship between air pressure, temperature, and altitude. is used to calculate the atmospheric pressure of each floor of the elevator. The air temperature in the elevator may be measured by an air temperature measuring unit provided in the car, or may be measured by an air temperature measuring unit provided in the hoistway of the elevator, It may be measured by an air temperature measuring unit provided on each floor of the elevator.

Further, specifying the position of the car may be specifying the floor on which the car is located (for example, stopped), or specifying the altitude at which the car is located. It may be In addition, the position (current position) of the car 101 corresponding to the measured air pressure is calculated by creating a graph connecting the calculated air pressure on each floor or creating a graph connecting the measured air pressure on two floors. It may be specified.

For example, the calculation unit calculates the atmospheric pressure, the temperature, and the altitude based on the atmospheric pressure of the predetermined floor, the temperature in the elevator, and the altitude of the predetermined floor stored in the storage unit. The atmospheric pressure at sea level is calculated using a altimeter formula that indicates the relationship between the above Calculate the atmospheric pressure of each floor using the height measurement formula.

The identifier is provided near the landing in the hoistway of the floor where the car is likely to pass, and when the detector detects the identifier, the air pressure measured by the air pressure measurement unit is used as a basis. Then, the calculation unit calculates the air pressure corresponding to the height of each floor stored in the storage unit, and updates the air pressure for each floor stored in the storage unit (see step S503, for example).

In the above configuration, the identifier is provided near the landing in the hoistway of the floor where the car is likely to pass. It is possible to update the air pressure for each floor that is stored.

Another identifier is provided on another floor different from the predetermined floor, and the atmospheric pressure measurement unit measures the atmospheric pressure around the car when the detector detects the other identifier. (See step S406, for example), and the calculation unit measures the atmospheric pressure of the other floor calculated when the predetermined floor is detected, and measures the atmospheric pressure when the other floor is detected. The air pressure measured by the unit is corrected (see step S406, for example).

In the above configuration, when another identifying object provided on another floor is detected, the air pressure of the other floor is measured, and when the air pressure of the predetermined floor is detected, the air pressure of the other floor is calculated. Since the barometric pressure is updated to the actual measured barometric pressure, the position of the car can be determined more accurately.

Note that the identifiers may be provided on a plurality of floors in addition to other floors. In this case, since the air pressures of the plurality of floors are updated to the actually measured air pressures, the position of the car can be specified more accurately.

Further, the atmospheric pressures of the other floors may be corrected based on the atmospheric pressure of the predetermined floor and the atmospheric pressure of the other floors. In this case, the position of the car can be specified more accurately because the accuracy of the air pressure on the other floors is improved.

The identifiers are magnets and have different polarities depending on where they are installed (see FIG. 2, for example).

In the above configuration, the identifier is a magnet, and the position where it is installed is identified by the polarity of the magnet, so the identifier can be easily installed.

When the detecting unit does not detect the identifying object within a predetermined height range, a communication interface (for example, , communication interface 330) (see, for example, FIG. 7).

In the above configuration, when an abnormality is detected in the identification object or the detection unit, the fact that there is an abnormality in the identification object or the detection unit is output. , it is possible to reduce the time required to deal with the abnormality.

Moreover, the above-described configurations may be appropriately changed, rearranged, combined, or omitted within the scope of the present invention.

100...Elevator system, 101...Car, 106...Positioning device, 107...Magnet.

Claims (4)

An elevator system comprising: a magnet provided in a hoistway of an elevator; and a detection unit provided in a car of the elevator for detecting the magnet,
a storage unit that stores the height of the floor of the elevator;
an air pressure measurement unit provided in the car for measuring the air pressure at a certain height of the magnet detected by the detection unit;
a calculation unit that calculates the air pressure of each floor of the elevator based on the air pressure at a certain height of the magnet and the height of the floor stored in the storage unit;
a specifying unit that obtains the position of the car from the atmospheric pressure of each floor calculated by the calculating unit and the atmospheric pressure measured by the atmospheric pressure measurement unit;
with a communication interface and
Determining whether the car has passed through a predetermined range based on information indicating a predetermined height range including the magnet and the position of the car obtained by the identifying unit,
When it is determined that the car has passed through the predetermined range, determining whether the detection unit has detected the magnet in the predetermined height range,
When the detection unit does not detect the magnet in the predetermined height range, the communication interface outputs that there is an abnormality such as the magnet falling off in the height range ,
The magnets are provided on three floors, the top floor, the middle floor, and the bottom floor, and have different polarities corresponding to the installed floors,
wherein the detection unit comprises a detection unit for N poles and a detection unit for S poles,
elevator system. The calculating unit detects whether the car is on the highest floor, the intermediate floor, or the lowest floor from the information from the N-pole detecting unit and the S-pole detecting unit, and The atmospheric pressure measured by the atmospheric pressure measurement unit is associated with the detected floor and stored in the storage unit, and based on the atmospheric pressure associated with the detected floor and the atmospheric pressure associated with a different detected floor in the past, Calculate the air pressure corresponding to the height of each floor, and update the air pressure for each floor stored in the storage unit;
The elevator system according to claim 1 . Determine whether or not the pressure difference between the first atmospheric pressure measured on the detected floor and the current atmospheric pressure measured on the detected floor is greater than or equal to the threshold, and if the difference is greater than or equal to the threshold , the atmospheric pressure measuring unit stores the current atmospheric pressure in association with the detected floor in the storage unit, and stores the atmospheric pressure associated with the detected floor and the atmospheric pressure associated with a different past detected floor; Calculate the air pressure corresponding to the height of each floor based on
The elevator system according to claim 1 . A car position specifying method for specifying the position of the car based on the fact that a detection unit provided in the car of the elevator detects a magnet provided in the hoistway of the elevator,
An air pressure measurement unit provided in the car measures the air pressure at a certain height of the magnet detected by the detection unit,
A position specifying device calculates the air pressure of each floor of the elevator based on the air pressure at the height where the magnet is and the height of the floor stored in the storage unit,
The position specifying device obtains the position of the car from the calculated air pressure of each floor and the air pressure measured by the air pressure measurement unit,
The position specifying device determines whether the car has passed through the predetermined range based on the information indicating the predetermined height range including the magnet and the obtained position of the car. judge,
When the position specifying device determines that the car has passed through the predetermined range, the detection unit determines whether the magnet has been detected in the predetermined height range,
If the detection unit does not detect the magnet within the predetermined height range, the position specifying device determines that there is an abnormality such as the magnet coming off from the height range. Output by the communication interface of the specific device ,
The magnets are provided on three floors, the top floor, the middle floor, and the bottom floor, and have different polarities corresponding to the installed floors,
wherein the detection unit comprises a detection unit for N poles and a detection unit for S poles,
Car locating method.

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