JP7171837B1 - elevator system - Google Patents

Abstract

An object of the present invention is to perform highly reliable data transmission between a parent device and a child device without using a repeater even if the hoistway is long. An elevator system according to one embodiment includes a sensor installed in at least a car or a counterweight for detecting shaking at the installation location, and measurement data indicating the intensity of the shaking detected by the sensor. a communication terminal for wirelessly transmitting to the elevator controller; The communication terminal has storage means for storing measurement data obtained by the sensor, a first transmission rate, and a second transmission rate having a larger amount of data per unit time than the first transmission rate. During normal operation, small-capacity data required for normal operation is transmitted to the elevator control device at the first transmission rate, and at the time of maintenance and inspection after an earthquake occurs, the transmission rate is switched to the second transmission rate, and the storage means and communication control means for transmitting the measurement data stored in the elevator control device to the elevator control device. [Selection drawing] Fig. 2

Description

Embodiments of the present invention relate to elevator systems.

When the building shakes due to an earthquake or the like, the car is guided to the nearest floor by an earthquake control operation device, the door is opened, and passengers are loaded and unloaded. An elevator system equipped with such an earthquake control operation device is equipped with an S-wave sensor and a P-wave sensor. S-wave sensors and P-wave sensors are installed, for example, in a machine room located in the upper part of a building, a pit in a hoistway, or the like.

In the elevator system described above, automatic diagnostic operation is performed as necessary to diagnose whether there is any damage or malfunction in various devices. From the viewpoint of safety, the automatic diagnostic operation is performed only when the output (gal value) from the S-wave sensor or P-wave sensor when an earthquake occurs is less than a predetermined reference value. If the output from the S-wave sensor or P-wave sensor exceeds the reference value even once, inspection work is performed by maintenance personnel.

Here, in addition to the S-wave sensor and P-wave sensor for automatic diagnostic operation, for example, an acceleration sensor is installed in the car or counterweight to detect shaking according to the seismic capacity of each elevator, and the operation rate of automatic diagnostic operation is calculated. A system aimed at improvement is being considered. The acceleration sensor is battery-driven and wirelessly connected to the elevator controller via a communication terminal.

JP 2018-93485 A

In the system described above, the communication terminal, which is a child device, is installed in a moving object such as a car or a counterweight. Elevator control devices are usually installed at the top of the hoistway, so if the car is near the bottom floor, for example, the communication terminal (handset) on the car side and the communication terminal on the elevator control device side ( distance from the main unit), which affects wireless data transmission. The same is true for the counterweight. Therefore, it is necessary to perform data transmission via a repeater as necessary. However, the use of a repeater is costly, so it is desirable to transmit data without using a repeater.

The problem to be solved by the present invention is to provide an elevator system capable of performing highly reliable data transmission between a parent machine and a child machine without using a repeater even if the hoistway is long. be.

An elevator system according to one embodiment includes a sensor installed in at least a car or a counterweight for detecting vibration at the installation location, and measurement data indicating the strength of the vibration detected by the sensor to an elevator control device. and a communication terminal that transmits by radio. The communication terminal comprises storage means for storing measurement data obtained by the sensor, a first transmission rate with a long communication distance , and a data amount per unit time with a communication distance shorter than the first transmission rate. has a second transmission rate with a large number of data, transmits small-capacity data necessary for normal operation to the elevator control device at the first transmission rate during normal operation, and transmits the second data at the time of maintenance and inspection after an earthquake. and a communication control means for switching the transmission rate to , and transmitting the measurement data stored in the storage means to the elevator control device.

FIG. 1 is a diagram showing a schematic configuration example of an elevator system according to a first embodiment. FIG. 2 is a block diagram showing the functional configuration of a communication terminal used as a child device (slave) in the same embodiment. FIG. 3 is a diagram showing the relationship between the first transmission rate and the second transmission rate in the same embodiment. FIG. 4 is a block diagram showing the functional configuration of a communication terminal used as a parent device (master) in the same embodiment. FIG. 5 is a flow chart showing processing operations upon detection of shaking of the communication terminal in the embodiment. FIG. 6 is a flow chart showing processing operations upon detection of shaking of the communication terminal according to the second embodiment. FIG. 7 is a diagram for explaining the relationship between radio intensity and position information in the third embodiment. FIG. 8 is a flow chart showing processing operations upon detection of shaking of the communication terminal according to the third embodiment.

Embodiments will be described below with reference to the drawings.
The disclosure is by way of example only, and the invention is not limited by what is described in the following embodiments. Modifications that can be easily conceived by those skilled in the art are naturally included in the scope of the disclosure. In order to make the explanation clearer, in the drawings, the size, shape, etc. of each part may be changed from the actual embodiment and shown schematically. Corresponding elements in multiple drawings may be denoted by the same reference numerals and detailed descriptions thereof may be omitted.

(First embodiment)
FIG. 1 is a diagram showing a schematic configuration example of an elevator system according to a first embodiment. In the example of FIG. 1 , an elevator control device 10 for controlling the entire elevator and a hoisting machine 17 are provided in the upper machine room 1 . In addition, in a machine room type elevator that does not have a machine room, the elevator control device 10 and the hoisting machine 17 are arranged in the upper part of the hoistway 2 .

The elevator control device 10 includes a control board 11 for controlling the entire elevator, and a communication terminal CM functioning as a master. As shown in FIG. 1, a car 12 and a counterweight 13 are provided in the hoistway 2, and are supported by guide rails 14a to 14d so as to be vertically operable.

Guide rails 14 a and 14 b are guide rails for the car 12 , and guide rails 14 c and 14 d are guide rails for the counterweight 13 . The car 12 is slidably attached to guide rails 14a and 14b via guide shoes 15a and 15b. The counterweight 13 is slidably provided on guide rails 14c and 14d via guide shoes 15c and 15d.

The car 12 is provided with an acceleration sensor S1 for detecting (measuring) the shaking of the car 12 and a communication terminal CS1 functioning as a slave (child device). The acceleration sensor S1 and the communication terminal CS1 are connected by wire and used as a sensor device (also referred to as a sensor terminal) having a wireless communication function.

Similarly, the counterweight 13 is provided with an acceleration sensor S2 for detecting (measuring) the swing of the counterweight 13 and a communication terminal CS2 functioning as a slave. The acceleration sensor S2 and the communication terminal CS2 are connected by wire and used as a sensor device having a wireless communication function. The communication terminals CS1 and CS2 are communicably connected to a communication terminal CM, which is a master. The communication terminal CS1 and the acceleration sensor S1 may be housed in the same housing. The communication terminal CS2 and the acceleration sensor S2 may be housed in the same housing.

Further, an S-wave sensor SS is provided in the upper machine room 1, and a P-wave sensor PS is provided in the pit 3, in order to detect (measure) shaking when an earthquake occurs. The S-wave sensor SS and the P-wave sensor PS are connected to the elevator control device 10 by wire.

The car 12 is connected to one end of the main rope 16, and the counterweight 13 is connected to the other end of the main rope 16. - 特許庁The main rope 16 is wound around a main sheave 18 a attached to the rotating shaft of the hoisting machine 17 . 18b is a deflecting sheave.

The hoist 17 includes a motor 19 for rotating the main sheave 18a. When the motor 19 of the hoisting machine 17 is driven by a drive instruction from the elevator control device 10, the main sheave 18a rotates in a predetermined direction, and the car 12 is lifted and lowered together with the counterweight 13 via the main rope 16. Operate. A position detector (pulse generator) 20 is installed on the main sheave 18a. The position detector 20 detects how much and in which direction the main sheave 18a has rotated, thereby detecting the amount of movement of the car 12 associated with the ascending/descending operation.

The car 12 is provided with a car control device 21 and a door control device 22 . The car control device 21 and the door control device 22 are connected to the elevator control device 10 (control board 11).

The car control device 21 performs driving control of lighting equipment and air conditioning control in the car 12 according to instructions from the elevator control device 10 . Further, the car control device 21 transmits information about the operation panel 4 provided in the car, specifically, information about the destination floor button and the door open/close button pressed by the passenger to the elevator control device 10 and the door control device 22 . output to

The door control device 22 controls the opening and closing of the doors of the car 12 according to instructions from the elevator control device 10 and the car control device 21 . The door control device 22 is connected to a motor 23 for opening and closing the door of the car 12, and drives the motor 23 to control opening and closing of the door.

A hall call button 6 and a hall control device 30 are provided in the hall 5 of each floor where the car 12 lands. The hall call button 6 is a button for registering the position (floor) of the hall where the passenger gets on the car 12 and the destination direction (upward/downward). The hall control device 30 is connected to the elevator control device 10 (control board 11 ) and outputs information registered by the hall call button 6 to the elevator control device 10 .

Next, the configuration of the communication terminal CS used as a child device (slave) will be described with reference to the functional block diagram of FIG. The communication terminal CS1 installed in the car 12 and the communication terminal CS2 installed in the counterweight 13 have the same functional units. Here, the communication terminal CS2 installed in the counterweight 13 will be described as a representative example, and the description of the communication terminal CS1 will be omitted. In the following description, the communication terminal CS2 will be basically described as a representative example, and the description of the communication terminal CS1 will be omitted.

Communication terminal CS2 is connected to acceleration sensor S2. The communication terminal CS2 inputs acceleration data (measurement data) indicating the strength of the swing of the counterweight 13 detected by the acceleration sensor S2, and wirelessly sends data to the communication terminal CM, which is a master (parent device), at a predetermined timing. It has the ability to send.

The acceleration sensor S2 may be a two-axis acceleration sensor capable of detecting at least lateral vibration (horizontal vibration). It may be a sensor. The horizontal axis is called x-axis and y-axis, and the vertical axis is called z-axis.

As shown in FIG. 2, communication terminal CS2 includes battery 100, power supply control section 101, input section 103, storage section 104, radio strength measurement section 105, and communication control section .

Battery 100 is rechargeable or replaceable, and is used as a power source for communication terminal CS2 and acceleration sensor S2. The power supply control unit 101 supplies the power of the battery 100 to each functional unit including the communication control unit 106 in the communication terminal CS2 and to the acceleration sensor S2.

The input unit 103 receives input of acceleration data from the acceleration sensor S2 at a detection period T that defines a time interval for detecting the vibration of the counterweight 13 in advance. The storage unit 104 stores the acceleration data input through the input unit 103 in chronological order. From the viewpoint of power saving, in the normal operation mode, the detection cycle T is set to the long cycle T1 for normal measurement. On the other hand, when a certain shake (a shake equal to or greater than the first threshold TH1) is detected, the detection cycle T is set to a shorter time interval than the long cycle T1 in order to increase the number of samples of acceleration data. It is switched to the short period T2 for detailed measurement.

The radio strength measuring unit 105 measures the radio strength (radio field strength) between the communication terminal CS2 as a child device and the communication terminal CM as a master device. Specifically, the radio strength measurement unit 105 obtains the radio strength (dBm) from the power when the communication terminal CM receives the radio signal transmitted from the communication terminal CM.

The communication control unit 106 controls communication between the communication terminal CS2, which is a child device, and the communication terminal CM, which is a master device. The communication control unit 106 has a first transmission rate R1, which is a standard transmission rate, and a second transmission rate R2, which has a larger amount of data per unit time than the first transmission rate R1. During normal operation, the transmission rate is set to the first transmission rate R1, and is switched to the second transmission rate R2 during maintenance and inspection after an earthquake. "At the time of normal driving" is when the car 12 is driving on each floor with passengers on board. "During maintenance and inspection" means, for example, when the operation of the elevator is stopped due to the occurrence of an earthquake and maintenance personnel are inspecting the car 12 and the counterweight 13 .

FIG. 3 shows the relationship between the first transmission rate R1 and the second transmission rate R2.
In this embodiment, wireless communication is performed between the parent device and the child device using, for example, radio waves in the sub-gigahertz frequency band (920 MHz band). The first transmission rate R1 has a transmission speed of 50 kbps, for example, and although the amount of data per unit time is small, the communication distance is long and the current consumption is small. On the other hand, the second transmission rate R2 has a transmission speed of 200 kbps, for example, and although the amount of data per unit time is large, the communication distance is short and the current consumption is large. If radio waves in the sub-gigahertz frequency band are used, radio communication over several kilometers is theoretically possible, but the hoistway 2 has many obstacles and the radio wave environment is poor. For this reason, packet errors are likely to occur when the parent and child devices are separated by a certain distance or more.

The content of communication between master and slave units is roughly divided into two types: "small-capacity data in units of several bits, such as abnormal failure signals" and "large-capacity data, such as acceleration data measured at the time of an earthquake." . In wireless communication, lowering the transmission rate enables long-distance communication, but it takes time when large-capacity data such as acceleration data is to be transmitted.

Here, in this system, when an earthquake does not occur, only small-capacity data such as an abnormal failure signal is exchanged between the master unit and the slave unit. Therefore, during normal operation without an earthquake, if the transmission rate is lowered, the communication distance can be secured, and even if the hoistway is long, data can be transmitted without using a repeater. Further, when the transmission rate is lowered, the current consumption of the child device can be suppressed, so the replacement cycle of the battery, which is the power source of the child device, becomes longer, and maintainability is improved.

On the other hand, when an earthquake occurs, it is necessary to quickly analyze the acceleration data measured at that time and restore the operation of the elevator. Therefore, during maintenance and inspection after an earthquake, the transmission rate is raised more than during normal operation. As a result, a large amount of acceleration data can be sent in a short period of time. Also, during maintenance and inspection, the position of the slave unit can be arbitrarily adjusted, so that the acceleration data can be reliably transmitted while the radio intensity is stable at a predetermined value or higher.

Next, the configuration of the communication terminal CM used as a parent device (master) will be described with reference to the functional block diagram of FIG.

The communication terminal CM is wirelessly connected to the communication terminals CS1 and CS2 functioning as slaves. Also, the communication terminal CM is connected to the control board 11 by wire. As shown in FIG. 4, the communication terminal CM includes a power supply control section 201, a communication control section 202, a reply control section 203, an output section 204, and the like.

The power supply control unit 201 supplies power supplied from the control board 11 to each functional unit. Since the power supply control unit 201 receives power from the control board 11, unlike the power supply control unit 101 in the communication terminals CS1 and CS2, all functional units included in the communication terminal CM are supplied with power. Always supply the required power.

Communication control unit 202 receives various signals transmitted by communication terminals CS1 and CS2 functioning as slaves. Specifically, the communication control unit 202 receives the acceleration data transmitted from the communication terminals CS1 and CS2, the battery replacement request transmitted when the battery is insufficient, and the like, and determines the identification code attached to these signals. together with the response control unit 203 and the output unit 204 . Reply control unit 203 transmits an acknowledgment for notifying that the signal has been received normally to communication terminals CS1 and CS2 via communication control unit 202 . The output unit 204 receives various signals and identification codes via the communication control unit 202 and outputs them to the control board 11 .

The control board 11 is provided with various functions related to elevator operation control. To simplify the explanation below, the elevator control device 10 is assumed to perform various functions.

For example, when a high-gal earthquake is detected by a seismic sensor (S-wave sensor SS or P-wave sensor PS), the elevator control device 10 holds (latches) the high-gal detection signal and releases it from the outside. Equipped with a function to stop the operation of the elevator until it is operated. The elevator controller 10 also acquires acceleration data detected by the acceleration sensors S1 and S2 from the communication terminals CS1 and CS2 when an earthquake occurs, and performs processing such as sending the acceleration data to a monitoring center (not shown) for analysis. conduct.

Next, the operation of this system will be explained.
FIG. 5 is a flow chart showing processing operations upon detection of shaking of the communication terminal CS2 in the first embodiment. The processing operation of the communication terminal CS1 provided in the car 12 is also the same.

In the communication terminal CS2, the input unit 103 inputs acceleration data indicating the intensity of shaking detected by the acceleration sensor S2 for each preset detection cycle T. The input acceleration data are sequentially stored in the storage unit 104 . During normal operation, the first transmission rate R1 is set by communication control section 106 provided in communication terminal CS2 (steps ST11-ST12).

As shown in FIG. 3, the first transmission rate R1 has characteristics that the amount of data per unit time is small, but the communication distance is long. During normal operation, only small-capacity data such as an abnormal failure signal is sent between the parent and child devices. Therefore, for example, even if the counterweight 13 is located near the lowest floor and away from the elevator control device 10, if the amount of data is small, the elevator control device 10 (specifically, the elevator control device 10) is transmitted at the first transmission rate R1. 10 can be reliably sent to the parent communication terminal CM).

When an earthquake occurs, the vibration of the counterweight 13 is detected by the acceleration sensor S2, and acceleration data indicating the strength of the vibration is stored in the storage unit 104 (step ST13). The acceleration data detected at this time is important for checking the state of the elevator due to the earthquake, and must be sent to the elevator control device 10 as soon as possible. However, since the data volume is large, it takes time to transmit at the first transmission rate R1, and packet errors may occur during transmission.

During maintenance and inspection after an earthquake, the communication control unit 106 switches from the first transmission rate R1 to the second transmission rate R2. Specifically, when a seismic sensor (S-wave sensor SS or P-wave sensor PS) detects a shaking equal to or greater than a certain value, the elevator control device 10 stops the operation of the elevator and, via the communication network, to report the abnormality to a monitoring center (not shown). The monitoring center dispatches maintenance personnel to the site in response to this notification. In addition, the elevator control device 10 sets the communication terminals CS1 and CS2 of the slave units to the maintenance and inspection mode through the communication terminal CM of the master unit. When the maintenance and inspection mode is set (Yes in step ST14), the communication control unit 106 switches from the first transmission rate R1 to the second transmission rate R2 (step ST15), and performs the following operations when an earthquake occurs. Measured acceleration data is sent to the elevator controller 10 . The same processing is executed in the communication terminal CS1 installed in the car 12 as well.

As shown in FIG. 3, the second transmission rate R2 has characteristics such that the amount of data per unit time is large, but the communication distance is short. Therefore, it is preferable to perform wireless communication as close as possible to the communication terminal CM of the parent device. Therefore, when transmitting data, communication control section 106 confirms the radio strength measured by radio strength measuring section 105 (step ST16). If the radio intensity is stable at a certain value or more (Yes in step ST16), the communication control section 106 determines that stable radio communication can be performed near the communication terminal CM of the parent device. Then, the acceleration data stored in the storage unit 104 is transmitted to the elevator control device 10 at the second transmission rate R2 (step ST17).

If the data transmission is not completed (No in step ST18), the communication control section 106 sends the remaining data to the elevator at the second transmission rate R2 at the timing when the wireless strength reaches or exceeds the predetermined value again. It is transmitted to the control device 10 (steps ST16-ST19).

On the other hand, if the radio strength is less than a certain value (No in step ST16), the communication control section 106 turns on a lamp (not shown) provided in the communication terminal CS to indicate that the radio strength is weak. A warning is issued (step ST19). In response to this warning, maintenance personnel performs a predetermined operation to adjust the position of the counterweight 13 so as to bring it closer to the elevator control device 10 (step ST20).

The above-mentioned "predetermined operation" means, for example, maintenance personnel operating the elevator control device 10 to raise and lower the car 12 and the counterweight 13, or accessing the elevator control device 10 from a mobile terminal (not shown). , raising and lowering the car 12 and the counterweight 13 by wireless operation. If the radio intensity becomes equal to or higher than a certain value as a result of this position adjustment (Yes in step ST16), communication control section 106 transmits the acceleration data stored in storage section 104 to elevator control device 10 at second transmission rate R2. transmit (steps ST17-ST18).

As described above, according to the first embodiment, by switching the transmission rate between during normal operation and during maintenance and inspection after an earthquake, the first transmission rate that prioritizes the communication distance is used during normal operation. Data necessary for operation can be reliably sent to an elevator control device without using a repeater. On the other hand, during maintenance and inspection after an earthquake occurs, the acceleration data detected at the time of the earthquake can be sent to the elevator control device in a short period of time using the second transmission rate giving priority to the amount of data. At this time, by adjusting the position, the acceleration data is sent in a state where the radio intensity is stable at a certain value or higher, thereby preventing packet errors and realizing highly reliable data transmission.

(Second embodiment)
Next, a second embodiment will be described.
In the first embodiment, the transmission rate is switched between normal operation and maintenance inspection. On the other hand, in the second embodiment, the transmission rate is switched between normal times when an earthquake does not occur and when an earthquake occurs.

Since the basic configuration of the communication terminal CS2 is the same as that of FIG. 2, the processing operation of the communication terminal CS2 will be explained here using FIG.

FIG. 6 is a flow chart showing processing operations upon detection of shaking by the communication terminal CS2 according to the second embodiment. The processing operation of the communication terminal CS1 provided in the car 12 is also the same.

In normal times when no earthquake has occurred, the first transmission rate R1 is set by the communication control section 106 provided in the communication terminal CS2 (steps ST21-ST22). The above-mentioned "normal time" includes the case where the elevator is operating normally without an earthquake or the case where the elevator is in recovery operation.

When an earthquake occurs, the vibration of the counterweight 13 is detected by the acceleration sensor S2, and acceleration data indicating the strength of the vibration is stored in the storage unit 104 (step ST23). As described above, the acceleration data detected when an earthquake occurs is important for checking the state of the elevator due to an earthquake, and should be sent to the elevator control device 10 as soon as possible.

Here, during operation of the elevator, the radio intensity varies depending on the positions of the car 12 and the counterweight 13 . Therefore, when transmitting data, communication control section 106 confirms the wireless strength measured by wireless strength measuring section 105 (step ST24). If the radio intensity is stable at a certain value or more (Yes in step ST24), the communication control section 106 determines that stable radio communication can be performed near the communication terminal CM of the parent device. and switches to the second transmission rate R2 (step ST25). After switching to the second transmission rate R2, communication control section 106 transmits the acceleration data stored in storage section 104 to elevator control device 10 (step ST26).

If the data transmission is not completed (No in step ST27), the communication control section 106 transmits the remaining data to the elevator at the second transmission rate R2 at the timing when the wireless strength reaches or exceeds the predetermined value again. It is transmitted to the control device 10 (steps ST24-ST26).

On the other hand, if the radio intensity is less than the predetermined value (No in step ST23), the communication control unit 106 waits for data transmission until the counterweight 13 comes close to the elevator control device 10 due to operation of the elevator. (step ST28). When the counterweight 13 approaches the elevator control device 10 and the radio intensity is stabilized at a certain value or higher (Yes in step ST24), the communication control section 106 reads the acceleration data stored in the storage section 104. It is transmitted to the elevator control device 10 at the second transmission rate R2 (steps ST25-ST27).

As described above, according to the second embodiment, the transmission rate is switched between normal times when an earthquake does not occur and when an earthquake occurs. By transmitting the acceleration data at the second transmission rate, the same effect as in the first embodiment can be obtained.

(Third embodiment)
Next, a third embodiment will be described.
In the second embodiment described above, the transmission rate is switched to the second transmission rate R2 based on the radio strength when an earthquake occurs. On the other hand, in the third embodiment, the transmission rate is switched to the second transmission rate R2 based on the position information of the car 12 or the counterweight 13 when an earthquake occurs.

FIG. 7 is a diagram for explaining the relationship between radio intensity and position information in the third embodiment. A communication terminal CM, which is a parent device, is installed in the elevator control device 10 . Communication terminals CS1 and CS2, which are child devices, are installed in a car 12 and a counterweight 13, respectively.

The wireless strength between the parent and child devices increases as the child device approaches the parent device and weakens as the child device separates from the parent device. Therefore, if the car 12 and the counterweight 13 are moved up and down by experiments, etc., and a range is determined in which the radio intensity is equal to or higher than a certain value, the car 12 or the counterweight 13 is within the range. Sometimes it may be possible to switch to the second transmission rate R2. In the example of FIG. 7, a range of h1 is defined in the downward direction from the installation position of the parent device. If the car 12 or the counterweight 13 is positioned within this range h1, a radio intensity greater than or equal to a certain value can be obtained.

FIG. 8 is a flow chart showing processing operations upon detection of shaking of the communication terminal CS2 in the third embodiment. The processing operation of the communication terminal CS1 provided in the car 12 is also the same.

In normal times when no earthquake has occurred, the first transmission rate R1 is set by the communication control section 106 provided in the communication terminal CS2 (steps ST31-ST32). The above-mentioned "normal time" includes the case where the elevator is operating normally without an earthquake or the case where the elevator is in recovery operation.

When an earthquake occurs, the vibration of the counterweight 13 is detected by the acceleration sensor S2, and acceleration data indicating the strength of the vibration is stored in the storage unit 104 (step ST33). As described above, the acceleration data detected when an earthquake occurs is important for checking the state of the elevator due to an earthquake, and should be sent to the elevator control device 10 as soon as possible.

Here, during operation of the elevator, the radio intensity varies depending on the positions of the car 12 and the counterweight 13 . Therefore, when transmitting data, the communication control unit 106 acquires position information indicating the position of the counterweight 13 on the hoistway from the elevator control device 10 (step ST34). 7 is determined (step ST35).

As described above, h1 is defined as the range in which the wireless strength between the parent device and the child device is equal to or greater than a certain value. Therefore, if the counterweight 13 is positioned within the range h1 (Yes in step ST35), the communication control section 106 determines that stable wireless communication can be performed near the communication terminal CM of the parent device. and switch to the second transmission rate R2 (step ST36). After switching to the second transmission rate R2, the communication control section 106 transmits the acceleration data stored in the storage section 104 to the elevator control device 10 at the second transmission rate R2 (step ST37).

If the data transmission has not been completed (No in step ST38), the communication control section 106 acquires the position information again, and transmits the remaining data at the timing when the counterweight 13 enters the range h1. 2 to the elevator controller 10 at a transmission rate R2 of 2 (steps ST34 to ST38).

On the other hand, when the counterweight 13 is outside the range h1 (No in step ST35), the communication control unit 106 transmits data until the counterweight 13 comes close to the elevator control device 10 due to operation of the elevator. (step ST39). When the counterweight 13 approaches the elevator control device 10 and the radio intensity is stabilized at a certain value or more (Yes in step ST35), the communication control section 106 reads the acceleration data stored in the storage section 104. It is transmitted to the elevator control device 10 at the second transmission rate R2 (steps ST36-ST38).

As described above, according to the third embodiment, the transmission rate is switched between normal times when an earthquake does not occur and when an earthquake occurs. By transmitting the acceleration data at the second transmission rate when near the base unit, the same effect as in the first embodiment can be obtained.

According to at least one embodiment described above, there is provided an elevator system capable of performing highly reliable data transmission between the master unit and the slave unit without using a repeater even if the hoistway is long. be able to.

It should be noted that although several embodiments of the invention have been described, these embodiments are provided by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1... Upper machine room, 2... Hoistway, 3... Pit, 4... Operation panel, 5... Hall, 6... Hall call button, 10... Elevator control device, 11... Control board, 12... Car, 13... Counter weight , 14a to 14d guide rail 15a to 15d guide shoe 16 main rope 17 hoisting machine 18a main sheave 18b deflection sheave 19 motor 20 position detector 21 car control Device 22 Door control device 23 Motor 30 Hall control device 100 Battery 101 Power supply control unit 103 Input unit 104 Storage unit 105 Wireless intensity measurement unit 106 Communication control Section, CM, CS1, CS2... communication terminal, PS... P wave sensor, SS... S wave sensor, S1, S2... acceleration sensor.

Claims (7)

A sensor is installed at least on the car or the counterweight to detect shaking at the installation location, and a communication terminal wirelessly transmits measurement data indicating the intensity of the shaking detected by the sensor to the elevator control device. In an elevator system with
The above communication terminal
a storage means for storing measurement data obtained by the sensor;
A first transmission rate with a long communication distance and a second transmission rate with a shorter communication distance and a larger amount of data per unit time than the first transmission rate, and the first transmission during normal operation data necessary for normal operation is transmitted to the elevator control device at the same transmission rate, the transmission rate is switched to the second transmission rate during maintenance and inspection after an earthquake occurs, and the measured data stored in the storage means is transmitted to the elevator control device. and communication control means for transmitting to the elevator system. The communication control means is
When the radio strength between the communication terminal and the elevator control device stabilizes at a predetermined value or more by adjusting the position of the car or the counterweight, the measurement data is transmitted at the second transmission rate. 2. The elevator system according to claim 1, wherein the information is transmitted to an elevator controller. A sensor is installed at least on the car or the counterweight to detect shaking at the installation location, and a communication terminal wirelessly transmits measurement data indicating the intensity of the shaking detected by the sensor to the elevator control device. In an elevator system with
The above communication terminal
a storage means for storing measurement data obtained by the sensor;
It has a first transmission rate with a long communication distance and a second transmission rate with a shorter communication distance than the first transmission rate and a larger amount of data per unit time, and during normal times when an earthquake does not occur A small amount of data necessary for normal operation is transmitted to the elevator control device at the first transmission rate, the transmission rate is switched to the second transmission rate when an earthquake occurs, and the measurement data stored in the storage means is transmitted to the elevator control device. and communication control means for transmitting to the device. The communication control means is
4. The elevator system according to claim 3, wherein switching to the second transmission rate is performed based on radio strength between the communication terminal and the elevator control device. The communication control means is
5. The elevator system according to claim 4, wherein said measurement data is transmitted to said elevator control device at said second transmission rate when said radio intensity is stable at a predetermined value or more. The communication control means is
4. The elevator system according to claim 3, wherein the transmission rate is switched to the second transmission rate based on the positional information of the car or the counterweight. The communication control means is
When the car or the counterweight is positioned within a range in which the radio intensity between the communication terminal and the elevator control device is equal to or greater than a predetermined value, the measured data is transmitted to the elevator at the second transmission rate. 7. The elevator system according to claim 6, wherein the information is transmitted to a control device.

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