CN110606418A - Elevator system - Google Patents

Abstract

The invention provides an elevator system, which can send the output from a sensor arranged on a counterweight to an elevator control device without arranging a new power supply device on the counterweight. According to one embodiment, an elevator system comprises: a car disposed in the hoistway; a counterweight connected to the car via a rope; a sensor provided in the counterweight and measuring the sway of the counterweight; a1 st communication terminal which is provided in the counterweight, is connected to the sensor by wire, and functions as a slave unit when communicating with another communication terminal; and a2 nd communication terminal which is communicably connected to the 1 st communication terminal and functions as a master, wherein the 1 st communication terminal is provided with a power supply device, and power is supplied to the 1 st communication terminal by the power supply device.

Description

Elevator system

The application is based on Japanese patent application 2018-114472 (application date: 2018, 6 and 15), and enjoys the priority of the application. This application incorporates by reference the entirety of this application.

Technical Field

Embodiments of the present invention relate to an elevator system.

Background

In an elevator system, when a building shakes due to an earthquake or the like, a car is guided to the nearest floor by a control operation device at the time of the earthquake, and a door is opened to allow passengers to exit the elevator. An elevator system provided with a control operation device during an earthquake is provided with an S-wave sensor and a P-wave sensor for detecting the shaking of a building and a car. The S-wave sensor and the P-wave sensor are installed in, for example, a machine room, a hoistway pit, or the like located in an upper part of a building.

In such an elevator system, when the sway is stopped, an automatic diagnosis operation is performed as necessary to diagnose whether or not various devices constituting the elevator system are damaged or defective. From the viewpoint of safety, the automatic diagnosis operation is performed only when the outputs (gamma values) from the S-wave sensor and the P-wave sensor are equal to or less than a predetermined reference value at the time of occurrence of an earthquake. The reference value is set based on endurance limits of various devices constituting the elevator system, and maintenance work is performed by a maintenance worker even when the output from the S-wave sensor or the P-wave sensor exceeds the reference value once.

In an elevator system including the above-described earthquake operation control device, an acceleration sensor may be provided in addition to the S-wave sensor and the P-wave sensor in order to further ensure safety. Like the S-wave sensor and the P-wave sensor, the acceleration sensor detects the sway of the building and the car and measures the gamma value. The acceleration sensor is installed in, for example, a machine room, a car, a counterweight, etc., located in an upper part of a building.

On the other hand, in order to take the output from the acceleration sensor into the elevator control device, a new wiring device for connecting the acceleration sensor and the elevator control device is required. Therefore, there is a problem that the acceleration sensor must be installed in a place where a new wiring device can be installed. In order to eliminate such a problem, a technique of transmitting an output from an acceleration sensor to an elevator control device by wireless communication has been proposed.

However, in order to utilize the above-described technology, when a communication terminal is provided near the acceleration sensor, a power supply for driving the communication terminal is required. In particular, when the acceleration sensor is provided on the counterweight, a new power supply device (power supply line) needs to be provided on the counterweight because the counterweight generally does not have a power supply device. In this case, there are disadvantages that not only a large cost is required, but also it is not preferable from the viewpoint of safety.

Disclosure of Invention

An object of an embodiment of the present invention is to provide an elevator system capable of transmitting an output from a sensor provided in a counterweight to an elevator control device without providing a new power supply device in the counterweight.

According to one embodiment, an elevator system comprises: a car disposed in the hoistway; a counterweight connected to the car via a rope; a sensor provided in the counterweight and measuring a sway of the counterweight; a1 st communication terminal provided in the counterweight and connected to the sensor by wire, the communication terminal functioning as a slave unit when communicating with another communication terminal; and a2 nd communication terminal communicably connected to the 1 st communication terminal and functioning as a master, wherein the 1 st communication terminal is provided with a power supply device, and power is supplied to the 1 st communication terminal by the power supply device.

Drawings

Fig. 1 is a diagram showing a schematic configuration example of an elevator system according to an embodiment.

Fig. 2 is a block diagram showing an example of a functional configuration of a communication terminal that functions as a slave unit according to this embodiment.

Fig. 3 is a block diagram showing an example of a functional configuration of a communication terminal functioning as a master according to this embodiment.

Fig. 4 is a block diagram showing an example of a functional configuration of the elevator control board according to this embodiment.

Fig. 5 is a block diagram showing an example of a functional configuration of the operation control unit according to the embodiment.

Fig. 6 is a flowchart showing an example of the operation of the communication terminal functioning as the slave unit according to this embodiment.

Fig. 7 is a flowchart showing an example of the operation of the communication terminal functioning as the base unit according to this embodiment.

Fig. 8 is a flowchart showing an example of an operation related to life and death monitoring of the communication terminal functioning as the slave unit according to the embodiment.

Fig. 9 is a flowchart showing an example of an operation related to life and death monitoring of the communication terminal functioning as the master according to this embodiment.

Fig. 10 is a flowchart showing an example of the operation of the elevator control device according to this embodiment.

Fig. 11 is a flowchart showing an example of the operation of the elevator control device according to this embodiment.

Fig. 12 is a diagram showing a schematic configuration example of an elevator system according to modification 1 of the embodiment.

Fig. 13 is a diagram showing a schematic configuration example of an elevator system according to modification 2 of this embodiment.

Fig. 14 is a diagram showing a schematic configuration example of an elevator system according to modification 3 of the embodiment.

Detailed Description

Hereinafter, embodiments will be described with reference to the drawings. The disclosure is merely an example, and the present invention is not limited to the contents described in the following embodiments. Variations that can be readily envisioned by one skilled in the art are, of course, within the scope of the disclosure. In order to make the description more clear, in the drawings, the dimensions, shapes, and the like of the respective portions may be schematically shown by being modified from those of the actual embodiment. In the drawings, corresponding elements are denoted by the same reference numerals, and detailed description thereof may be omitted.

[ System constitution ]

Fig. 1 is a diagram showing a schematic configuration example of an elevator system according to an embodiment. In the elevator system shown in fig. 1, an elevator control device 10 that controls the entire elevator is provided in the upper machine room. The elevator control device 10 includes an elevator control board 11 for controlling the entire elevator, and a communication terminal CM functioning as a master (master). As shown in fig. 1, a car 12 and a counterweight 13 are provided in a hoistway, and supported by guide rails 14a to 14d so as to be capable of moving up and down. The guide rails 14a and 14b are guide rails for the car 12, and the guide rails 14c and 14d are guide rails for the counterweight 13. The car 12 is disposed between guide rails 14a, 14b for the car 12, and is slidably attached to the guide rails 14a, 14b via guide shoes 15. The counterweight 13 is slidably attached to guide rails 14c and 14d for the counterweight 13 via guide shoes 15.

The car 12 is provided with an acceleration sensor S1 for detecting (measuring) the sway of the car 12, and a communication terminal CS1 functioning as a slave machine (slave machine). The acceleration sensor S1 is connected to the communication terminal CS1 by wire. Similarly, the counterweight 13 is provided with an acceleration sensor S2 for detecting (measuring) the sway of the counterweight 13, and a communication terminal CS2 functioning as a slave. The acceleration sensor S2 is connected to the communication terminal CS2 by wire. The communication terminals CS1, CS2 are communicably connected to the communication terminal CM.

In order to detect (measure) the sway during the occurrence of an earthquake, an S-wave sensor SS is provided in the upper machine room, and a P-wave sensor PS is provided in the hoistway pit. Both the S-wave sensor SS and the P-wave sensor PS are connected to the elevator control device 10 by wires.

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. The main rope 16 is wound around a main sheave 18a, and the main sheave 18a is attached to a rotation shaft of the hoist 17. 18b are deflector sheaves. The hoist 17 is provided in the upper machine room together with the elevator control device 10, and includes a motor 19 for rotating the main sheave 18 a. When the motor 19 of the hoisting machine 17 is driven in response to a drive instruction from the elevator control device 10, the main sheave 18a rotates in a predetermined direction, and the car 12 ascends and descends in a bucket manner together with the counterweight 13 via the main rope 16. A position detector (pulse generator) 20 is provided on the main sheave 18 a. The position detector 20 detects the amount of movement of the car 12 associated with the raising and lowering operation by detecting in which direction the main sheave 18a is rotated.

The car 12 is provided with a car control device 21 and a door control device 22. Both the car control device 21 and the door control device 22 are connected to the elevator control device 10 (elevator control board 11), and the car control device 21 performs drive control and air conditioning control of the lighting devices in the car 12 in accordance with instructions from the elevator control device 10. The car control device 21 outputs information on an operation panel operated by a passenger, specifically, information on a destination floor button and a door opening/closing button pressed by the passenger to the elevator control device 10 and the door control device 22. The door control device 22 controls opening and closing of doors of the car 12 stopped at the waiting hall in accordance with 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 controls the opening and closing of the door by driving the motor 23.

A hall call button and a hall controller 30 are provided in the hall at each floor where the car 12 stops. The hall call button is a button for registering the position and destination direction of the hall where the passenger gets on the car 12. The hall call button is connected to the hall control device 30. The hall controller 30 is also connected to the elevator controller 10 (elevator control board 11), and outputs information on the hall call button pressed by the passenger to the elevator controller 10.

[ functional constitution: communication terminal (Slave machine) ]

Next, a functional unit included in the communication terminal CS functioning as a slave will be described with reference to a functional block diagram of fig. 2. Since the communication terminal CS1 provided in the car 12 and the communication terminal CS2 provided in the counterweight 13 have the same functional parts, a description will be given here using the communication terminal CS2 as a representative example, and a description of the communication terminal CS1 will be omitted.

The communication terminal CS2 is connected to the acceleration sensor S2 provided in the counterweight 13 by a wire, for example. Further, the communication terminal CS2 is connected to the communication terminal CM functioning as a host computer by wireless using the antenna a 2.

As shown in fig. 2, the communication terminal CS2 includes a power supply control unit 101, an input unit 102, a storage unit 103, a detection cycle switching unit 104, a power supply determination unit 105, a power life determination unit 106, a communication control unit 107, and the like.

The power supply control unit 101 supplies power to each function unit based on a rechargeable battery or an exchangeable battery (these may be collectively referred to as "power supply device") provided independently of the communication terminal CS 2. However, the power supply control unit 101 does not always supply power to the communication control unit 107, but supplies power only when receiving a power on command output from the power supply determination unit 105. The power supply control unit 101 periodically outputs remaining amount information indicating the remaining amount of the battery or the battery to the power life determination unit 106.

The input unit 102 receives input of measurement data indicating the gamma values measured by the acceleration sensor S2 at predetermined detection periods. The input measurement data is stored in the storage unit 103. The storage unit 103 is a storage medium that stores the measurement data input to the input unit 102 in time series.

The detection cycle switching unit 104 reads (acquires) the measurement data each time the measurement data is stored in the storage unit 103, and determines whether or not the gamma value indicated by the read measurement data is equal to or greater than the 1 st threshold. The detection cycle switching unit 104 changes (switches) the detection cycle to a shorter detection cycle than the current detection cycle when it is determined that the gamma value indicated by the read measurement data is equal to or greater than the 1 st threshold. The 1 st threshold is a value set for a gamma value indicated by measurement data, and is an index for determining whether the detection cycle is longer than the current cycle or shorter than the current cycle, and is set to, for example, 50[ Gal ].

The power supply determination unit 105 outputs a power-on command instructing the communication control unit 107 to supply power to the power supply control unit 101 when receiving a result that the gamma value indicated by the measurement data is equal to or greater than the 1 st threshold value as a result of the processing performed by the detection cycle switching unit 104. Here, the power supply determination unit 105 acquires the result of the processing executed by the detection cycle switching unit 104 and outputs the power on command based on the acquired result of the processing, but the present invention is not limited to this, and the power supply determination unit 105 may read out the measurement data each time the measurement data is stored in the storage unit 103, determine by itself whether or not the gamma value indicated by the read measurement data is equal to or greater than the 1 st threshold value, and output the power on command to the power supply control unit 101 when the gamma value indicated by the measurement data is equal to or greater than the 1 st threshold value.

The power supply life determination unit 106 determines whether or not the remaining amount of the power supply indicated by the remaining amount information is smaller than a predetermined value when receiving an input of the remaining amount information periodically output from the power supply control unit 101. The power supply life determination unit 106 instructs the communication control unit 107 to output a power supply replacement request for urging charging of the storage battery or replacement of the battery to a maintenance worker when it is determined that the remaining amount of the power supply indicated by the input remaining amount information is smaller than a predetermined value.

As shown in fig. 2, the communication control unit 107 includes an operation availability determination unit 107a, a fixed-cycle notification unit 107b, a replacement request output unit 107c, and the like.

The operation availability determination unit 107a reads the latest measurement data (in other words, the measurement data indicating the gamma value determined to be equal to or greater than the 1 st threshold value by the detection cycle switching unit 104) from among the plurality of measurement data stored in the storage unit 103 when power is supplied from the power supply control unit 101, and determines whether or not the gamma value indicated by the read measurement data is equal to or greater than the 2 nd threshold value. The operation availability determining unit 107a transmits a signal indicating whether or not the gamma value indicated by the read measurement data is equal to or greater than the 2 nd threshold value, specifically, a1 st signal indicating that the gamma value is equal to or greater than the 2 nd threshold value or a2 nd signal indicating that the gamma value is smaller than the 2 nd threshold value, to the communication terminal CM functioning as a master via the antenna a2 together with the identification code of the communication terminal CS 2. The 2 nd threshold is a shock-proof reference value set based on the endurance limit of the guide rails 14c and 14d for the counterweight 13, and is set to 600[ Gal ], for example.

The fixed-cycle reporting unit 107b reads, from the storage unit 103, measurement data (maximum measurement data) indicating the maximum gamma value among the plurality of pieces of measurement data received and input during a fixed period, and transmits the read maximum measurement data to the communication terminal CM via the antenna a2 together with the identification code of the communication terminal CS 2. The fixed period includes a plurality of detection periods, and for example, a detection period of N times (N is a positive integer) corresponds to a fixed period of one time.

The replacement request output unit 107c transmits the power replacement request together with the identification code of the communication terminal CS2 to the communication terminal CM via the antenna a2 in accordance with the instruction from the power life determination unit 106.

[ functional constitution: communication terminal (host) ]

Next, a functional unit included in the communication terminal CM that functions as a master will be described with reference to a functional block diagram of fig. 3. The communication terminal CM is connected to communication terminals CS1 and CS2 functioning as slaves by radio using an antenna a 1. The communication terminal CM is connected to the elevator control board 11 by a wire.

As shown in fig. 3, the communication terminal CM includes a power supply control unit 201, a communication control unit 202, a return control unit 203, an output unit 204, and the like.

The power supply control unit 201 supplies power supplied from the power supply control unit in the elevator control board 11 to each function unit. Since the power supply control unit 201 receives power supply from the elevator control board 11, power is always supplied to all the functional units included in the communication terminal CM, unlike the power supply control unit 101 in the communication terminals CS1 and CS 2.

The communication control unit 202 receives various signals and various requests transmitted from the communication terminals CS1 and CS2 functioning as slaves via the antenna a 1. Specifically, the communication controller 202 receives the 1 st signal and the 2 nd signal transmitted from the operation availability determining unit 107a in the communication terminals CS1 and CS2, the maximum measurement data transmitted from the fixed-cycle notifying unit 107b, the power supply replacement request transmitted from the replacement request output unit 107c, and the like via the antenna a 1. The received 1 st signal and 2 nd signal are output to the reply control section 203 and the output section 204 together with the identification codes attached to these signals. The received maximum measurement data and power supply replacement request are output to the output unit 204 together with the identification code added to these pieces of information.

When receiving an input of the 1 st or 2 nd signal output from the communication control unit 202 together with the identification code, the reply control unit 203 transmits (replies) a response (positive response) notifying that the 1 st or 2 nd signal is normally received to the communication terminal CS identified by the identification code added to the 1 st or 2 nd signal having received the input via the communication control unit 202 and the antenna a 1.

The output unit 204 outputs a signal indicating that the communication terminal CS and the self-terminal CM recognized by the identification code added to the input maximum measurement data normally operate to the elevator control board 11 when the input of the maximum measurement data output from the communication control unit 202 is received at regular intervals together with the identification code. The output unit 204 determines whether or not the gamma value indicated by the maximum measurement data is equal to or greater than the 3 rd threshold value when the input of the maximum measurement data output from the communication control unit 202 is received together with the identification code at regular intervals, and outputs a status signal indicating whether the acceleration sensor S connected to the communication terminal CS identified by the identification code is in operation or in stop (in other words, a status signal indicating whether or not an abnormality occurs in the acceleration sensor S) to the elevator control board 11 based on the determination result. The 3 rd threshold is a value set for determining whether the acceleration sensor S is operating or stopped, and for example, a gamma value detected during normal operation (normal operation) corresponds to the value. Specifically, the 3 rd threshold is set to 30[ Gal ], for example.

The output unit 204 outputs the 1 st signal or the 2 nd signal, the power supply replacement request, and the like to the elevator control board 11 together with the identification code added thereto when receiving the input.

[ functional constitution: elevator control base plate

Next, a functional unit included in the elevator control board 11 will be described with reference to a functional block diagram of fig. 4. The elevator control board 11 is connected to a communication terminal CM functioning as a master machine by a wire. The elevator control board 11 is connected to the car control device 21, the door control device 22, and the hall control device 30 by wires.

As shown in fig. 4, the elevator control board 11 includes an input/output control unit 11a, an operation control unit 11b, a position control unit 11c, a motor control unit 11d, a communication control unit 11e, a power supply control unit 11f, and the like.

The input/output control unit 11a is an input interface that receives input of various signals and various requests transmitted from the communication terminal CM functioning as a host, and has a function of outputting the input various signals and various requests to other functional units.

The operation control unit 11b has a function of controlling the operation of the entire elevator based on various signals and various requests sent from the input/output control unit 11 a.

The position control unit 11c has a function of detecting the current position of the car 12 based on the movement amount of the car 12 detected by the position detector 20. The motor control unit 11d has a function of controlling the operation of the motor 19.

The communication control unit 11e transmits and receives various kinds of information to and from the car control device 21, the door control device 22, and the hall control device 30 connected by wire. The power supply control unit 11f has a function of supplying power to each functional unit included in the elevator control board 11 and supplying power to the communication terminal CM functioning as a master.

[ functional constitution: operation control part

Further, a functional unit included in the operation control unit 11b included in the elevator control board 11 will be described with reference to the functional block diagram of fig. 5.

As shown in fig. 5, the operation control unit 11b includes a terminal abnormality determination unit 301, a sensor abnormality determination unit 302, a controlled operation control unit 303, a power supply replacement notification unit 304, and the like.

The terminal abnormality determination unit 301 determines whether or not abnormality occurs in the communication terminals CS1, CS2 and the communication terminal CM based on the presence or absence of input of a vital/dead signal output from the input/output control unit 11a at regular intervals. When it is determined that an abnormality occurs in at least one of the communication terminals CS1, CS2, and CM (the possibility is high), the terminal abnormality determination unit 301 notifies the maintenance person of the abnormality and outputs a prohibition signal for prohibiting the automatic diagnostic operation of the car 12 to the controlled operation control unit 303.

The sensor abnormality determination unit 302 determines whether or not abnormality has occurred in the acceleration sensors S1 and S2 based on the state signal output from the input/output control unit 11a at regular intervals. When it is determined that an abnormality has occurred in at least one of the acceleration sensors S1 and S2 (the possibility is high), the sensor abnormality determination unit 302 notifies the maintenance person of the abnormality and outputs a prohibition signal for prohibiting the automatic diagnostic operation of the car 12 to the controlled operation control unit 303.

The controlled operation control unit 303 controls the controlled operation of the car 12 at the time of occurrence of an earthquake. Specifically, the controlled operation controller 303 determines whether or not the automatic diagnosis operation is possible based on the 1 st or 2 nd signal corresponding to the communication terminal CS1 and the 1 st or 2 nd signal corresponding to the communication terminal CS2, which are output from the input/output controller 11a, and performs the automatic diagnosis operation when it is determined that the automatic diagnosis operation is possible. The controlled operation control unit 303 prohibits the automatic diagnosis operation when an input of a prohibition signal is received from the terminal abnormality determination unit 301 or the sensor abnormality determination unit 302.

Upon receiving the input of the power supply replacement request output from the input/output control unit 11a, the power supply replacement notifying unit 304 notifies the maintenance worker that it is necessary to charge the storage battery of the communication terminal CS identified by the identification code attached to the power supply replacement request or replace the battery of the communication terminal CS.

Although not shown in fig. 5, the operation control unit 11b may further include an operation state determination unit that determines whether or not the car 12 is moving based on various information transmitted from the car control device 21, the door control device 22, the hall control device 30, and the like.

[ action: communication terminal (Slave machine) ]

Here, an example of the operation of the communication terminal CS2 functioning as a slave will be described with reference to the flowchart of fig. 6. Note that, here, as in fig. 2, a description will be given of a representative example of communication terminal CS2, and a description of communication terminal CS1 that operates similarly will be omitted.

First, the input unit 102 receives input of measurement data indicating the gamma values measured by the acceleration sensor S2 in accordance with a preset detection cycle (step ST 1). The input measurement data is written and stored in the storage unit 103.

Next, when new measurement data is stored in the storage unit 103, the detection cycle switching unit 104 reads the new measurement data from the storage unit 103, and determines whether or not the gamma value indicated by the read measurement data is equal to or greater than the 1 ST threshold (step ST 2). Although described above, the 1 st threshold is a value set as an index for determining whether the detection cycle is changed to a cycle longer than the current cycle or to a cycle shorter than the current cycle.

As a result of the processing at step ST2, when it is determined that the gamma values indicated by the measurement data are smaller than the 1 ST threshold (no at step ST2), the detection cycle switching unit 104 determines whether or not an input of measurement data indicating gamma values determined to be smaller than the 1 ST threshold is continuously received for the 1 ST time from the past to the present (step ST3), in the same manner as this time. As a result of this processing, when it is determined that the input of the measurement data is not continued for the 1 ST time (no in step ST3), the series of operations here is ended, and communication terminal CS2 is in a standby state until the next detection cycle comes, that is, until the next measurement data is input from acceleration sensor S2. In addition, the 1 st time is generally set to a time (for example, 10 minutes) at which the earthquake ends including a aftershock when the earthquake occurs.

On the other hand, as a result of the processing at step ST3, when it is determined that the input of the measurement data continues for the 1 ST time (yes at step ST3), the detection cycle switching unit 104 changes the detection cycle in which the input of the measurement data is received from the acceleration sensor S2 to a detection cycle longer (slower) than the current detection cycle (step ST4) so that the possibility of the detection of an earthquake or a aftershock accompanying the earthquake is low, and ends the series of operations, and the communication terminal CS2 is placed in a standby state until the next detection cycle arrives, that is, until the next measurement data is input from the acceleration sensor S2.

As a result of the processing at step ST2, when it is determined that the gamma value indicated by the measurement data is equal to or greater than the 1 ST threshold (yes at step ST2), the detection cycle switching unit 104 changes the detection cycle in which the input of the measurement data is received from the acceleration sensor S2 to a detection cycle shorter (faster) than the current cycle, so that the possibility of detecting an earthquake or a aftershock accompanying the earthquake is high (step ST 5).

Next, the power supply determination unit 105 outputs a power supply on command to the power supply control unit 101 when receiving the result that the gamma value indicated by the measurement data is not less than the 1 ST threshold value as the processing result of the step ST2 of the detection cycle switching unit 104. The power supply control unit 101 starts supplying power to the communication control unit 107 in accordance with the power on command from the power supply determination unit 105 (step ST 6).

Next, the operation availability determination unit 107a included in the communication control unit 107 reads the latest measurement data stored in the storage unit 103 (in other words, reads measurement data indicating a gamma value determined to be equal to or greater than the 1 ST threshold value in the processing of step ST2), and determines whether or not the gamma value indicated by the read measurement data is equal to or greater than the 2 nd threshold value (step ST 7). Although described above, the 2 nd threshold is a shock-proof reference value set based on the endurance limit of the guide rails 14c and 14d for the counterweight 13.

As a result of the processing at step ST7, when it is determined that the gamma value indicated by the measured data is smaller than the 2 nd threshold value, that is, when the gamma value is equal to or larger than the 1 ST threshold value and smaller than the 2 nd threshold value (no at step ST7), the operation availability determining unit 107a transmits the 2 nd signal indicating that the measured gamma value is smaller than the earthquake-resistant reference value to the communication terminal CM functioning as the master through the antenna a2 (step ST8) so that the possibility of damage or failure is low in the guide rails 14c and 14d for the counterweight 13, and proceeds to the processing at step ST10 described later.

As a result of the processing at step ST7, when it is determined that the gamma value indicated by the measured data is equal to or greater than the 2 nd threshold value (yes at step ST7), the operation availability determination unit 107a transmits the 1 ST signal indicating that the measured gamma value is equal to or greater than the vibration-proof reference value to the communication terminal CM functioning as the master machine via the antenna a2, assuming that there is a high possibility of damage or failure (e.g., bending of the guide rail) to the guide rails 14c and 14d for the counterweight 13 (step ST 9).

Next, the operation availability determination unit 107a determines whether or not a response indicating that the 1 ST or 2 nd signal is normally received by the communication terminal CM is received (step ST 10). As a result of this processing, when it is determined that a response is received from the communication terminal CM (yes in step ST10), the power supply control unit 101 stops the power supply to the communication control unit 107 (step ST11), and ends a series of operations herein, and the communication terminal CS2 is put into a standby state until the next detection cycle comes, that is, until the next measurement data is input from the acceleration sensor S2.

On the other hand, as a result of the processing at step ST10, when it is determined that the response from the communication terminal CM has not been received (not received) (no at step ST10), the operation availability determination unit 107a determines whether or not a predetermined time has elapsed since the transmission of the 1 ST or 2 nd signal (step ST 12). The elapsed time from the transmission of the 1 st signal or the 2 nd signal is counted by an internal clock, not shown, provided at the communication terminal CS 2. As a result of this processing, when it is determined that the predetermined time has elapsed (yes at step ST12), the processing at step ST11 is executed, and the communication terminal CS2 does not receive a response and ends a series of operations therein. Thereafter, the communication terminal CS2 is put on standby until the next detection cycle, that is, until the next measurement data is input from the acceleration sensor S2.

When it is determined that the predetermined time has not elapsed as a result of the processing at step ST12 (no at step ST12), the operation availability determination unit 107a retransmits the 1 ST or 2 nd signal to the communication terminal CM via the antenna a2 (step ST13), and thereafter, the processing at step ST10 is executed again.

According to the series of operations described above, the communication terminal CS2 supplies power to the communication control unit 107 only when the gamma value measured by the acceleration sensor S2 is equal to or greater than the 1 st threshold value, and therefore, energy can be saved and the life of the battery or the battery installed independently can be extended. In addition, when the gal values measured by the acceleration sensor S2 are successively smaller than the 1 st threshold value for the 1 st time, the communication terminal CS2 changes the detection cycle to be longer than the current one, so that the number of times of receiving the input of the measurement data from the acceleration sensor S2 can be reduced. That is, the number of times the process of step ST1 and the additional processes are executed is reduced, and therefore, energy can be saved accordingly, and the life of the battery or the battery installed independently can be extended.

[ action: communication terminal (host) ]

Next, an example of the operation of the communication terminal CM functioning as a master will be described with reference to the flowchart of fig. 7.

First, the communication control unit 202 determines whether or not a signal transmitted from the communication terminal CS, specifically, a1 ST or 2 nd signal, is received together with the identification code (step ST 21). As a result of this processing, when it is determined that the signal from the communication terminal CS has not been received (no at step ST21), the processing at step ST21 is executed again.

On the other hand, when determining that the signal from the communication terminal CS has been received as a result of the processing at step ST21 (yes at step ST21), the communication controller 202 outputs the received signal to the reply controller 203 and the output unit 204 together with the identification code (step ST 22).

When receiving an input of the 1 st or 2 nd signal output from the communication control unit 202, the reply control unit 203 instructs the communication control unit 202 to reply a reply for transmitting a normal reception of the signal to the communication terminal CS identified by the attached identification code. In response to the instruction from reply control unit 203, communication control unit 202 transmits a response to communication terminal CS via antenna a1 (step ST 23).

When receiving the input of the 1 ST or 2 nd signal output from the communication control unit 202, the output unit 204 outputs the signal to the elevator control board 11 (step ST24), and ends the series of operations here.

[ actions related to life and death monitoring: communication terminal (Slave machine) ]

Next, an example of an operation related to life and death monitoring of the communication terminal CS2 functioning as a slave will be described with reference to the flowchart of fig. 8. Note that, here, as in fig. 2 and 6, a description will be given of a representative example of communication terminal CS2, and a description of communication terminal CS1 that operates similarly will be omitted.

First, the input unit 102 receives input of measurement data indicating the gamma values measured by the acceleration sensor S2 in a predetermined detection cycle (step ST 31). The input measurement data is written and stored in the storage unit 103.

Next, the input unit 102 determines whether or not the gamma value indicated by the input measurement data exceeds the gamma value (maximum value) indicated by the maximum measurement data stored in the storage unit 103 (step ST 32). As a result of this processing, if it is determined that the current gamma value does not exceed the maximum value (no at step ST32), the processing at step ST34 described later is executed.

On the other hand, as a result of the processing at step ST32, if it is determined that the current gamma value exceeds the maximum value (yes at step ST32), the input unit 102 updates the value of the maximum measurement data stored in the storage unit 103 to the current gamma value (step ST 33).

Next, the power supply determination section 105 determines whether or not the 2 nd time (here, "the 2 nd time" is equal to "the fixed period") has elapsed since the end of the last fixed period (step ST 34). The elapsed time since the end of the last fixed period is counted by an internal clock or the like, not shown, provided at communication terminal CS 2. As a result of this processing, when it is determined that the 2 nd time period has not elapsed (no in step ST34), the series of operations herein is ended, and communication terminal CS2 enters a standby state until the next detection cycle comes or the 2 nd time period elapses.

On the other hand, as a result of the processing at step ST34, when it is determined that the 2 nd time has elapsed (yes at step ST34), the power supply determination unit 105 outputs a power supply on command to the power supply control unit 101. When receiving the power supply instruction, the power supply control unit 101 starts supplying power to the communication control unit 107 in accordance with the power supply instruction (step ST 35).

Next, the fixed-period reporting unit 107b included in the communication control unit 107 reads the maximum measurement data stored in the storage unit 103, and transmits the maximum measurement data together with the identification code of the communication terminal CS2 to the communication terminal CM via the antenna a2 (step ST 36).

Then, the fixed-period reporting unit 107b resets the maximum measurement data stored in the storage unit 103 (step ST37), the power supply control unit 101 stops the supply of power to the communication control unit 107 (step ST38), and the series of operations are ended, and the communication terminal CS2 is in a standby state until the next detection period comes or the 2 nd time elapses.

[ actions related to life and death monitoring: communication terminal (host) ]

An example of the operation of the communication terminal CM functioning as a master related to life and death monitoring will be described with reference to a flowchart of fig. 9.

First, the output unit 204 determines whether or not the input of the maximum measurement data (in other words, the maximum measurement data transmitted from the communication terminal CS at regular intervals) output from the communication control unit 202 at regular intervals is input (step ST 41). As a result of this processing, when it is determined that the maximum measurement data has not been input (no in step ST41), the communication terminal CM ends the series of operations here.

On the other hand, when it is determined that the maximum measurement data has been input as a result of the processing at step ST41 (yes at step ST41), the output unit 204 outputs a vital/dead signal indicating that the communication terminal CS and the self-terminal CM are operating normally to the elevator control board 11 (step ST 42).

Next, the output unit 204 determines whether or not the gamma value indicated by the maximum measurement data received as input is equal to or greater than the 3 rd threshold (step ST 43). As a result of this processing, when it is determined that the gamma value indicated by the maximum measurement data is equal to or greater than the 3 rd threshold value (yes at step ST43), the output unit 204 executes the processing of step ST46 described later after determining that the acceleration sensor S connected to the communication terminal CS is not abnormal, that is, the acceleration sensor S is operating normally (step ST 44).

On the other hand, as a result of the processing at step ST43, when it is determined that the gamma value indicated by the maximum measurement data is smaller than the 3 rd threshold value (no at step ST43), the output unit 204 executes the processing at step ST46 described later after determining that the acceleration sensor S connected to the communication terminal CS is highly likely to be abnormal (in other words, the acceleration sensor S is highly likely to be stopped) (step ST 45).

Then, the output unit 204 receives the processing result of step ST44 or ST45, outputs a state signal indicating the current state of the acceleration sensor S to the elevator control board 11 (step ST46), and ends the series of operations here.

[ action: elevator control device

Further, an example of the operation of the elevator control device 10 will be described with reference to the flowchart of fig. 10.

First, the elevator control device 10 determines whether or not at least one of the high gamma, the low gamma, the extra low gamma, and the P-wave is detected based on input from various sensors, not shown, provided in the upper machine room and the hoistway (step ST 51). The high gamma, low gamma, extra low gamma, and P-wave are all indicators for determining whether or not an earthquake has occurred. The high, low, and extra-low gags are detected by an S-wave sensor, and for example, when an earthquake of 200[ Gal ] or more is detected in a building having a height of 60m or less, the high gag is detected. Low Gal is detected when an earthquake above 150[ Gal ] and less than 200[ Gal ] is detected in the building, and extra low Gal is detected when an earthquake above 80[ Gal ] and less than 150[ Gal ] is detected in the building. Further, the P-wave (initial inching) is detected by a P-wave sensor.

As a result of the processing at step ST51, if it is determined that any one of the high gamma, the low gamma, the extra low gamma, and the P wave is not detected (no at step ST51), the elevator control device 10 executes the processing at step ST79 described below, and ends the series of operations here.

On the other hand, as a result of the processing at step ST51, if it is determined that at least one of the high gal, the low gal, the extra low gal, and the P wave is detected (yes at step ST51), the elevator control device 10 determines whether the car 12 is moving (step ST 52). In the determination of whether or not the car 12 is moving, for example, the determination result of an operation state determination unit, not shown, included in the operation control unit 11b in the elevator control board 11 is used.

As a result of the processing at step ST52, if it is determined that the car 12 is not moving, that is, is stopping (no at step ST52), the elevator control device 10 executes the processing at step ST68 described later in a state where the car 12 is stopped at the stop floor (step ST 53).

On the other hand, as a result of the processing at step ST52, if it is determined that the car 12 is moving (yes at step ST52), the elevator control device 10 determines whether the car 12 can stop at the nearest floor within a predetermined time (for example, within 10 seconds) (step ST 54). In the determination of whether or not the car 12 can stop at the nearest floor within a predetermined time, information indicating the current moving speed of the car 12, information indicating the current position of the car 12, information indicating the distance from the current position to the nearest floor, and the like are used.

As a result of the processing at step ST54, if it is determined that the car 12 can stop at the nearest floor within the predetermined time (yes at step ST54), the elevator control device 10 performs the processing at step ST68 described later after stopping the car 12 at the nearest floor (step ST 55). On the other hand, as a result of the processing at step ST54, if it is determined that the car 12 cannot stop at the nearest floor within the predetermined time (no at step ST54), the elevator control device 10 immediately stops the car 12 (step ST 56).

Next, the elevator control device 10 determines whether the car 12 is stopped between floors (between floors) (step ST 57). In the determination of whether or not the car 12 is stopped between floors, for example, information indicating the current position of the car 12 detected by the position control unit 11c in the elevator control board 11 is used.

As a result of the processing at step ST57, if it is determined that the car 12 is not stopped at an inter-floor level, that is, accidentally stopped at the nearest floor level (no at step ST57), the processing at step ST68, which will be described later, is executed. On the other hand, as a result of the processing at step ST57, if it is determined that the car 12 is stopped between floors (yes at step ST57), the elevator control device 10 determines whether or not all of the high gal, the low gal, the extra low gal, and the P-wave are not detected (step ST 58).

As a result of this processing, if it is determined that at least one of the high gal, the low gal, the extra low gal, and the P wave is detected, that is, if it is not detected (no in step ST58), the processing in step ST58 is repeatedly executed until all of the high gal, the low gal, the extra low gal, and the P wave are not detected. On the other hand, as a result of the processing at step ST58, if it is determined that all of the high gal, the low gal, the extra low gal, and the P-wave are not detected (yes at step ST58), the elevator control device 10 determines whether or not the high gal is detected in the processing at step ST51 (step ST 59).

As a result of the processing at step ST59, when it is determined that the high gamma is not detected (no at step ST59), the elevator control device 10 moves the car 12 in a direction in which the car 12 is separated from the counterweight 13 and stops the car 12 at the nearest floor, so that the possibility of damage or malfunction occurring in various devices constituting the elevator system is low (step ST60), and then executes the processing at step ST68, which will be described later.

On the other hand, as a result of the processing at step ST59, if it is determined that gaging is detected (yes at step ST59), the elevator control device 10 determines whether or not an earthquake-time low-speed switch is installed in the elevator system (step ST 61). Information on the presence or absence of the earthquake low-speed switch is stored in advance in a memory, not shown, in the elevator control device 10.

As a result of this processing, if it is determined that the earthquake-time low-speed switch is not mounted (no in step ST61), the elevator control device 10 determines whether or not the 1 ST signal is output from the communication terminal CM. More specifically, the elevator control device 10 determines whether or not an input of at least one of the 1 ST signal to which the identification code of the communication terminal CS1 is added and the 1 ST signal to which the identification code of the communication terminal CS2 is added is received from the communication terminal CM (step ST 62).

As a result of the processing at step ST62, when it is determined that the input of at least one 1 ST signal outputted from the communication terminal CM is accepted (yes at step ST62), the elevator control device 10 is configured to execute the processing at step ST70 described later after stopping the car 12 at the nearest floor, so that there is a high possibility of damage or malfunction to the guide rail 14 supporting the car 12 and/or the counterweight 13 provided with the communication terminal CS identified by the identification code added to the 1 ST signal (step ST 63).

On the other hand, as a result of the processing at step ST62, when it is determined that the input of the 1 ST signal from the communication terminal CM is not received (no at step ST62), the elevator control device 10 moves the car 12 in a direction in which the car 12 is separated from the counterweight 13 so that there is a low possibility that damage or trouble occurs in various devices constituting the elevator system, and performs the processing at step ST68 described later after stopping the car 12 at the nearest floor (step ST 64).

As a result of the processing at step ST61, if it is determined that the earthquake-time low-speed switch is attached (yes at step ST61), the elevator control device 10 determines whether or not the earthquake-time low-speed switch and the door-closing button of the operation panel disposed in the car 12 are simultaneously operated (step ST 65). In addition, in the determination of whether or not the low-speed switch and the door-closing button are simultaneously operated at the time of an earthquake, information on an operation panel operated by a passenger and the like output from the car control device 21 are used.

As a result of this processing, when it is determined that the earthquake-time low-speed switch and the door-closing button are not simultaneously operated (no at step ST65), the processing at step ST65 is repeatedly executed until the earthquake-time low-speed switch and the door-closing button are simultaneously operated. In this case, for example, a broadcast may be broadcast from a speaker, not shown, in the car 12, which is desired to operate the low-speed switch and the door-closing button at the same time during an earthquake.

As a result of the processing at step ST65, when it is determined that the low-speed switch and the door-closing button are simultaneously operated during an earthquake (yes at step ST65), the elevator control device 10 moves the car 12 at a low speed in a direction in which the car 12 is separated from the counterweight 13 while the low-speed switch and the door-closing button are pressed during an earthquake (step ST 66). The elevator control device 10 determines whether the car 12 stops at the nearest floor (step ST 67). As a result of this processing, when it is determined that the car 12 has not stopped at the nearest floor (no at step ST67), the processing at steps ST65 and ST66 described above is executed again.

On the other hand, as a result of the processing at step ST67, when it is determined that the car 12 has stopped at the nearest floor (yes at step ST67), the elevator control device 10 opens the doors of the car 12 for a predetermined time (step ST68), and when a passenger is present in the car 12, the passenger is taken out of the elevator.

The processing of steps ST51 to ST68 described above is a series of processing for stopping the car 12 at the nearest floor and for taking passengers off the elevator when an earthquake occurs. The subsequent processes are a series of processes from the time when the passenger gets off the elevator to the time when the car 12 is restored.

First, after the processing at step ST68, the elevator control device 10 determines whether or not an abnormality has occurred in the communication terminals CS1 and CS2 connected to the acceleration sensors S1 and S2, respectively, and the communication terminal CM included in the elevator control device 10 and functioning as a master (step ST 69). In the determination of whether or not the abnormality occurs in the communication terminals CS1, CS2 and the communication terminal CM, the determination is performed based on the determination result of the terminal abnormality determination unit 301.

As a result of the processing at step ST69, if it is determined that there is no input of a vital signal from the communication terminal CM and there is a high possibility that an abnormality occurs at any one of the communication terminals (yes at step ST69), the elevator control device 10 prohibits the automatic diagnosis operation for returning the car 12, and executes the processing at step ST78 described later after the car 12 is brought into the operation suspended state (step ST 70).

On the other hand, as a result of the processing at step ST69, if it is determined that there is an input of a vital/dead signal from the communication terminal CM and no abnormality has occurred at any of the communication terminals (no at step ST69), the elevator control device 10 determines whether or not an abnormality has occurred in the acceleration sensors S1 and S2 (step ST 71). In the determination of whether or not abnormality occurs in the acceleration sensors S1 and S2, the determination is made based on the determination made by the sensor abnormality determination unit 302 and the result of detection by the position control unit 11C.

If it is determined as a result of the processing at step ST71 that there is a high possibility that an abnormality occurs in at least one of the acceleration sensors S1 and S2 (yes at step ST71), the processing at step ST70 is executed. On the other hand, as a result of the processing at step ST71, when it is determined that no abnormality has occurred in acceleration sensors S1 and S2 (no at step ST71), elevator control device 10 determines whether or not input of at least one of signal 1 to which the identification code of communication terminal CS1 is added and signal 1 to which the identification code of communication terminal CS2 is added is received (step ST 72). As a result of this processing, when it is determined that the input of at least one 1 ST signal has been received (yes in step ST72), the elevator control device 10 executes the processing of step ST70 so that there is a high possibility of damage or failure to the guide rail 14 that supports the car 12 and/or the counterweight 13 provided with the communication terminal CS identified by the identification code added to the 1 ST signal.

On the other hand, as a result of the processing at step ST72, if it is determined that the input of the 1 ST signal, that is, the input of the 2 nd signal to which the identification codes of the communication terminals CS1 and CS2 are added is not received (no at step ST72), the elevator control device 10 determines whether or not either the high gamma or the low gamma is detected in the processing at step ST51 (step ST 73). As a result of this processing, if it is determined that neither the high nor low gamma is detected (no at step ST73), the processing at step ST79 described later is executed.

As a result of the processing at step ST73, if it is determined that either the high or low gamma is detected (yes at step ST73), the elevator control device 10 determines whether or not the 3 rd time has elapsed since the detection of the high or low gamma (step ST 74). The 3 rd time is set as a time when the rope sway stops when the earthquake occurs. As a result of this processing, if it is determined that the 3 rd time period has not elapsed (no at step ST74), the processing at step ST74 is repeatedly executed until the 3 rd time period has elapsed.

On the other hand, as a result of the processing at step ST74, if it is determined that the 3 rd time has elapsed (yes at step ST74), the elevator control device 10 starts the earthquake-time automatic diagnosis operation of the car 12 (step ST 75).

Next, the elevator control device 10 determines whether or not the automatic diagnosis operation is ended at the time of the earthquake (step ST 76). Further, whether or not the automatic diagnosis operation at the time of earthquake is ended is determined based on whether or not an end signal output at the time of end of the diagnosis operation is input. As a result of this processing, when it is determined that the earthquake-time automatic diagnosis operation has not ended (no at step ST76), the processing at step ST76 is repeatedly executed until the earthquake-time automatic diagnosis operation ends.

As a result of the processing at step ST76, when it is determined that the automatic diagnosis operation at the time of earthquake has ended (yes at step ST76), the elevator control device 10 temporarily returns the car 12, and thereafter performs the temporary return operation (step ST 77).

Even when the car 12 is temporarily returned to operation, the maintenance worker needs to travel to the site to perform the inspection work. Therefore, the maintenance work by the maintenance worker is started. When the maintenance work by the maintenance person is started, the elevator control device 10 determines whether or not the maintenance work by the maintenance person is ended (step ST 78).

As a result of this processing, when it is determined that the inspection work has not been completed (no at step ST78), the processing at step ST78 is repeatedly executed until it is determined that the inspection work by the maintenance worker is completed.

On the other hand, when it is determined that the inspection work is finished (yes in step ST78), the elevator control device 10 completely restores the car 12, and thereafter performs a normal operation (step ST79), and ends the series of operations.

An elevator system according to one embodiment includes a communication terminal CS2 functioning as a slave, and a unique power supply device is provided in the communication terminal CS 2. Accordingly, the communication terminal CS2 can be provided on the counterweight 13 without providing a new power supply device (power supply line) or the like on the counterweight 13.

Further, since the communication terminal CS2 supplies power to the communication control unit 107 for communicating with another communication terminal (specifically, the communication terminal CM) only when the gamma value measured by the wired acceleration sensor S2 is equal to or greater than the 1 st threshold value, energy can be saved and the life of the power supply device installed independently can be extended.

Further, when the 1 st continuous time of the gamma values measured by the acceleration sensor S2 is shorter than the 1 st threshold value, the communication terminal CS2 changes the detection cycle in which the input of the measurement data is received from the acceleration sensor S2 to be longer than the current cycle, and therefore, the number of times the input of the measurement data is received can be reduced. In other words, since power consumption required for receiving the input of the measurement data can be reduced, energy can be saved, and the life of the power supply device installed independently can be extended.

Further, as described above, since communication terminal CS2 has various functions for extending the life of the power supply device, the number of times that the maintenance worker replaces the power supply device can be reduced, and the burden on the maintenance worker can also be reduced.

According to the above-described embodiment, it is possible to provide an elevator system capable of transmitting an output from a sensor provided in a counterweight to an elevator control device without providing a new power supply device in the counterweight.

In addition, since the elevator system can execute various processes shown in fig. 10 and 11, when an earthquake occurs, the elevator system can quickly recover with sufficient consideration given to safety.

In the present embodiment, as shown in fig. 1, a case is illustrated in which the communication terminal CS1 is provided on the car 12, the communication terminal CS2 is provided on the counterweight 13, and the communication terminal CM capable of communicating with the communication terminals CS1 and CS2 is provided in the upper machine room. Hereinafter, an installation layout different from that of fig. 1 will be described with reference to fig. 12 to 14.

[ 1 st modification ]

Fig. 12 is a diagram showing a schematic configuration example of an elevator system according to modification 1 of the present embodiment. The elevator system shown in fig. 12 is different from the elevator system shown in fig. 1 in that a communication terminal CM functioning as a master machine is not provided in the upper machine room, but is provided in the car 12 instead of the communication terminal CS 1. The communication terminal CM is connected by wire to an acceleration sensor S1 provided on the car 12.

In this case, although the wiring device 100 for connecting the communication terminal CM and the elevator control device 10 is newly required, the number of communication terminals CS functioning as slaves can be reduced by one, and cost reduction can be achieved. However, in this case, it is necessary to mount at least functional units corresponding to the input unit 102, the storage unit 103, the operation availability determination unit 107a, and the fixed-period reporting unit 107b included in the communication terminal CS in the communication terminal CM. Further, the communication terminal CM may further include a functional unit corresponding to the detection cycle switching unit 104.

According to this modification, the same effects as those of the above embodiment can be obtained.

[ modification 2 ]

Fig. 13 is a diagram showing a schematic configuration example of an elevator system according to modification 2 of the present embodiment. The elevator system shown in fig. 13 is similar to the configuration shown in fig. 12, and is different from the elevator system shown in fig. 1 in that a communication terminal CM functioning as a master is not provided in the upper machine room, but is provided in the car 12 instead of the communication terminal CS 1. The elevator system shown in fig. 12 is different in that the communication terminal CM is not directly connected to the elevator control device 10, but is indirectly connected to the elevator control device 10 via the car control device 21.

In this case, the number of communication terminals CS functioning as slaves can be reduced by one, and a new wiring device 100 for connecting the communication terminal CM and the elevator control device 10 is not necessary, so that cost reduction can be achieved. More specifically, although the wiring device 200 for connecting the communication terminal CM and the car control device 21 is newly required, the wiring device can be a simpler wiring device than the wiring device 100 extending to the upper machine room, and therefore, a lower cost can be achieved. However, in this case, it is also necessary to mount at least functional units corresponding to the input unit 102, the storage unit 103, the operation availability determination unit 107a, and the fixed-period reporting unit 107b included in the communication terminal CS in the communication terminal CM. In this case, the communication terminal CM may further include a functional unit corresponding to the detection cycle switching unit 104.

According to this modification, the same effects as those of the above-described embodiment can be obtained as in modification 1.

[ modification 3 ]

Fig. 14 is a diagram showing a schematic configuration example of an elevator system according to modification 3 of the present embodiment. The elevator system shown in fig. 14 is similar in arrangement layout to the elevator system shown in fig. 1, but is different from the elevator system shown in fig. 1 in that an acceleration sensor S3 wired to the communication terminal CM is provided in the elevator control device 10 provided in the upper machine room.

The acceleration sensor S3 is a sensor for detecting (measuring) the shake of the upper machine room.

In this case, the acceleration sensor S3 is added as a new device, and therefore, although it costs more than the elevator system shown in fig. 1, it is possible to determine whether damage or failure has occurred in the main sheave 18a, the deflector sheave 18b, and the motor 19 based on the gamma value measured by the acceleration sensor S3, and therefore, it is possible to further ensure safety. In this case, it is also necessary to mount at least functional units corresponding to the input unit 102, the storage unit 103, the operation availability determination unit 107a, and the fixed-period reporting unit 107b included in the communication terminal CS in the communication terminal CM. In this case, the communication terminal CM may further include a functional unit corresponding to the detection cycle switching unit 104.

According to this modification, as in the case of the 1 st and 2 nd modifications, the same effects as those of the above-described embodiment can be obtained, and it is possible to more accurately determine whether or not the automatic diagnosis operation for performing the provisional resumption operation is possible.

In the present embodiment, the description has been given assuming that the sensors wired to the communication terminals CS1 and CS2 are only acceleration sensors, but other sensors such as, for example, sound sensors may be further wired to the communication terminals CS1 and CS 2.

While several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the scope equivalent thereto.

Claims (5)

1. An elevator system is provided with:

a car disposed in the hoistway;

a counterweight connected to the car via a rope;

a sensor provided in the counterweight and measuring a sway of the counterweight;

a1 st communication terminal provided in the counterweight and connected to the sensor by wire, the communication terminal functioning as a slave unit when communicating with another communication terminal; and

a2 nd communication terminal communicably connected to the 1 st communication terminal and functioning as a master,

the 1 st communication terminal is provided with a power supply device, and power is supplied to the 1 st communication terminal by the power supply device.

2. The elevator system of claim 1,

the 1 st communication terminal includes:

an input unit for receiving input of measurement data indicating the sway measured by the sensor in the 1 st cycle;

a communication control unit for transmitting the input measurement data to the 2 nd communication terminal; and

a power supply control unit for controlling power supply from the power supply device to the units,

the power supply control unit is configured to supply power to the input unit at all times, and to supply power to the communication control unit when a measurement value indicated by the measurement data received as input is equal to or greater than a1 st threshold value.

3. The elevator system of claim 2,

the power supply control unit supplies power to the communication control unit so as to transmit a power supply replacement request for urging a maintenance worker to replace the power supply device to the 2 nd communication terminal when the remaining amount of the power supply device is smaller than a predetermined value.

4. The elevator system of claim 2,

the 1 st communication terminal changes the cycle of receiving the input of the measurement data to a cycle longer than the 1 st cycle when the measurement value indicated by the received measurement data is continuously smaller than the 1 st threshold for a predetermined period.

5. The elevator system of claim 2,

the 1 st communication terminal changes a cycle of receiving the input of the measurement data to a cycle shorter than the 1 st cycle when the measurement value indicated by the measurement data received is greater than or equal to the 2 nd threshold value which is greater than the 1 st threshold value.