JP2008143656A - Elevator remote monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator remote monitoring system stably reporting monitoring data related to the operation state of an elevator. <P>SOLUTION: The elevator remote monitoring system is provided with an elevator monitoring device 6 reporting the monitoring date related to the obtained operation state of the elevator to a remote monitoring center through a radio network terminal 7 and a radio network. The radio network terminal can establish communication with a plurality of base stations connected to the radio network. The elevator monitoring device comprises a monitoring data reporting means 12 for establishing communication with a suitable base station about each predetermined time leaned and selected, and reporting the monitoring data; a learning data collecting means 12 collecting recognizing information, a radio wave state, and the communication quality of the base station establishing the communication whenever reporting the monitoring data and storing that as learning data; and a leaning means 14 analyzing the stored leaning data and selecting a suitable base station again. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator remote monitoring system that monitors the operation state of an elevator at a remote location.

The radio wave condition changes every moment due to the use situation of other wireless network terminals around the installation site of the elevator remote monitoring system and the influence of noise, so even if the radio wave condition is good at the time of connection, the radio wave condition May get worse.
When trying to connect to a wireless network in a place where the service areas of multiple base stations overlap, one base station is the closest to the installation location and the signal strength is strong, but the radio wave condition changes greatly at certain times. . Since the other base station is far away from the other base station, the radio wave intensity is weaker than the radio wave from one base station, but the fluctuation of the radio wave condition is small in any time zone.
Originally, there is a risk of communication failure if the radio wave condition deteriorates in the middle of a time zone when the radio wave condition changes greatly. Even if the radio wave intensity is small, stable communication is possible by connecting to the other base station. Need to do.
Therefore, an elevator remote monitoring system that can confirm the radio wave condition of the PHS near the installation site has been proposed (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-314083

  However, in communication between the PHS terminal and the base station, the radio wave level, the number of occurrences of communication errors, the number of PHS terminals connected to the base station, and the communication speed with the base station are constantly changing, and only the radio wave state is confirmed. When a base station that establishes communication is selected, there is a problem that communication may be interrupted in the middle due to changes in other states.

  An object of the present invention is to provide an elevator remote monitoring system in which monitoring data related to an elevator operating state is stably reported.

  The elevator remote monitoring system according to the present invention is a remote monitoring system comprising an elevator monitoring device for reporting monitoring data relating to an elevator operating state to be acquired to a remote monitoring center via the wireless network terminal. Can establish communication with a plurality of base stations connected to the wireless network, and the elevator monitoring device can communicate with the optimum base station for each predetermined time zone selected by learning. The monitoring data reporting means for establishing the communication and reporting the monitoring data at the time, and collecting the identification information, the radio wave condition and the communication quality of the base station that established the communication each time the monitoring data is reported and storing it as learning data Learning data collection means, and learning means for analyzing the accumulated learning data and reselecting the optimum base station.

  The effect of the elevator remote monitoring system according to the present invention is that the learning data composed of the radio wave condition and communication quality from the base station used every time the monitoring data is reported is accumulated, and the most stable using the accumulated learning data By defining a base station that can perform communication, it is possible to perform communication that is more stable on average than when a base station is selected only from the radio wave condition.

Embodiment 1 FIG.
FIG. 1 is a block diagram of an elevator remote monitoring system according to Embodiment 1 of the present invention.
As shown in FIG. 1, the elevator remote monitoring system according to the first embodiment of the present invention includes a remote monitoring center 2 installed at a remote location away from the site where the elevator 1 is installed, and a site where the elevator 1 is installed. Remote monitoring device 3 installed in the network, and a wireless network 4 for connecting the remote monitoring center 2 and the remote monitoring device 3 to each other.

The remote monitoring device 3 reports the monitoring data of the elevator 1 to the remote monitoring center 2 periodically or when an abnormality occurs in the elevator 1. The time point at which the monitoring data is reported is hereinafter referred to as “report time point”.
The remote monitoring device 3 collects the operation state of the elevator from the elevator control device 5, generates and transmits monitoring data, and wirelessly reports the monitoring data to the remote monitoring center 2 via the wireless network 4. A network terminal 7 is provided.
The wireless network 4 is composed of two base stations 9a and 9b that are connected to the public network 8 and are connected to the public network 8 and perform wireless communication with the wireless network terminal 7. Note that although two base stations that can be connected to the wireless network terminal 7 have been described as examples, the present invention is not limited to this.
The remote monitoring center 2 is connected to the public network 8.

FIG. 2 is a diagram illustrating the arrangement of the remote monitoring device 3 and the base stations 9a and 9b.
The base stations 9a and 9b capable of wireless communication with the remote monitoring device 3 are installed as shown in FIG. Since the remote monitoring device 3 is installed at a position included in both the service area 21 of the base station 9a and the service area 22 of the base station 9b, it can communicate with either the base station 9a or the base station 9b. .

FIG. 3 is a functional block diagram of the elevator monitoring apparatus 6 according to Embodiment 1 of the present invention.
The elevator monitoring device 6 is a monitoring data acquisition unit 11 that acquires monitoring data related to the operation state of the elevator 1 from the elevator control device 5, and the monitoring data is remotely transmitted via the wireless network terminal 7, the base stations 9 a and 9 b, and the public network 8. The monitoring data reporting means 12 for reporting to the monitoring center 2, the identification information of the base stations 9a and 9b with which communication was established when reporting the monitoring data, the current time, and the received electric field as the radio state of the radio network terminal 7 when reporting Learning data collection means 13 that collects the strength and throughput as reported communication quality and stores it in the learning data table 15, and analyzes the learning data in the learning data table 15 to obtain the optimum base stations 9a and 9b. Learning means 14 for updating 16, a memory 17 provided with a learning data table 15 and a base station table 16, Counting a equipped with a clock IC18.

In the learning data table 15, as shown in FIG. 4, a sheet is prepared for each time slot in which one day is divided by a predetermined time. In this sheet, the identification information of the base stations 9a and 9b, the received electric field strength and the throughput are stored as one row. When the identification information, the received electric field strength, and the throughput of the base stations 9a and 9b for one row are collectively expressed, it is referred to as learning data.
As shown in FIG. 5, the base station table 16 stores the optimum identification information of the base stations 9a and 9b for each time zone.

The monitoring data acquisition unit 11 acquires monitoring data related to the operation state of the elevator 1 from the elevator control device 5 at a predetermined period or when an abnormality occurs in the elevator.
When the time reaches the reporting time, the monitoring data reporting unit 12 inquires the wireless network terminal 7 and collects a list of currently connectable base stations 9a and 9b, and adds the base station table 16 to the collected list of base stations 9a and 9b. It is determined whether the most suitable base stations 9a and 9b in the current time zone are included.
The monitoring data reporting means 12 establishes communication with the base stations 9a and 9b optimal for the radio network terminal 7 when the optimal base stations 9a and 9b are included in the list, and transmits the monitoring data to the remote monitoring center. 2, when the base stations 9 a and 9 b are not included in the list, the wireless network terminal 7 is inquired about the received field strength of the radio waves from the base stations 9 a and 9 b. Commands are established to establish communication with the large base stations 9a and 9b and to transmit monitoring data.

  When the base station 9a, 9b is designated and receives a monitoring data transmission command, the wireless network terminal 7 establishes communication with the designated base station 9a, 9b, and sends the monitoring data to the remote monitoring center 2. Send. At this time, the radio network terminal 7 measures the received electric field strength of radio waves from the base stations 9a and 9b with which communication has been established, and calculates the throughput when transmitting the monitoring data. It should be noted that the throughput at the time of transmission of monitoring data may be calculated by the elevator monitoring device 6.

Each time the learning data collection unit 13 reports monitoring data, the learning data collection unit 13 identifies the base stations 9a and 9b establishing communication from the monitoring data reporting unit 12, the received electric field strength and throughput from the radio network terminal 7, and the current time from the clock IC 18 Collect time.
The learning data collection means 13 stores the identification information, the received electric field strength, and the throughput of the base stations 9a and 9b collected on a sheet in which learning data is stored in the current time zone.

Each time learning data is stored, the learning means 14 determines whether or not the number of learning data stored in the sheet storing the learning data is equal to or greater than a predetermined number.
The learning means 14 ends without learning when the number of learning data is less than the predetermined number, and reads the learning data stored in the sheet when the number of learning data is the predetermined number or more, and receives the received electric field strength and throughput. The base station 9a, 9b having the highest evaluation is determined as an optimal base station in the time zone using an evaluation function with a variable.
Further, the learning means 14 stores the identification information of the base stations determined as the optimum base stations 9a and 9b in the column of the identification information of the base station in the corresponding time zone in the base station table 16. In this way, the base station table 16 stores optimal base station identification information for each time period.

  Next, the operation of the elevator remote monitoring system according to the first embodiment of the present invention will be described with reference to FIG. FIG. 6 is a flowchart showing an operation procedure of the elevator remote monitoring system according to the first embodiment of the present invention.

In step S <b> 11, monitoring data regarding the operating state of the elevator 1 is acquired from the elevator control device 5 at a predetermined period or when an abnormality occurs in the elevator 1.
In step S12, the wireless network terminal 7 is inquired to collect a list of currently connectable base stations 9a and 9b.
In step S13, it is determined whether or not the collected base stations 9a and 9b include an optimum base station in the current time zone of the base station table 16, and the optimum base stations 9a and 9b are included in the list. If YES in step S14, the process advances to step S14. If the list does not include the optimum base stations 9a and 9b, the process advances to step S17.

In step S <b> 14, a command is established to establish communication with the base stations 9 a and 9 b that are optimal for the wireless network terminal 7 and to transmit monitoring data to the remote monitoring center 2.
In step S15, the wireless network terminal 7 establishes communication with the designated base stations 9a and 9b and transmits monitoring data to the remote monitoring center 2.
In step S16, the radio network terminal 7 measures the received electric field strength of radio waves from the base stations 9a and 9b with which communication has been established, calculates the throughput when monitoring data is transmitted, and proceeds to step S21.

In step S17, the radio network terminal 7 is inquired about the received electric field strength of radio waves from the base stations 9a and 9b to obtain it.
In step S18, the wireless network terminal 7 is instructed to establish communication with the base stations 9a and 9b having the highest received electric field strength and to transmit monitoring data.
In step S19, the wireless network terminal 7 establishes communication with the designated base stations 9a and 9b and transmits monitoring data to the remote monitoring center 2.
In step S20, the radio network terminal 7 measures the received electric field strength of radio waves from the base stations 9a and 9b with which communication has been established, calculates the throughput when monitoring data is transmitted, and proceeds to step 19.

In step S21, identification information of the base stations 9a and 9b for establishing communication from the monitoring data reporting unit 12, the received electric field strength and throughput from the radio network terminal 7, and the current time from the clock IC 18 are collected.
In step S22, the identification information, the received electric field strength, and the throughput of the base stations 9a and 9b collected in a sheet in which learning data is stored in the current time zone are stored.

In step S23, it is determined whether or not the number of learning data stored in the sheet in which the learning data is stored is equal to or greater than a predetermined number. When the number of learning data is less than the predetermined number, the process ends. When is greater than or equal to the predetermined number, the process proceeds to step S24.
In step S24, the learning data stored in the sheet is read out, and the base station 9a, 9b having the highest evaluation using the evaluation function having the received electric field strength and the throughput as variables is determined as the optimum base station 9a, It is determined as 9b.
In step S25, the base station identification information determined as the optimum base stations 9a and 9b is stored in the base station identification information column of the corresponding time zone in the base station table 16.

In general, in communication between a PHS terminal as a wireless network terminal and a base station, the radio wave state, the number of occurrences of communication errors, the number of connected PHS terminals, or the communication speed with the base station changes from moment to moment. If the base station is selected based on the above, the radio wave condition may be instantaneously good, and the radio wave condition may deteriorate in the middle and communication may be interrupted.
On the other hand, by analyzing past learning data as in the present invention and selecting the optimal base station, the radio wave condition is not the best at the present time, but if the past history is taken into account, the radio wave condition will be until communication is interrupted. A base station that can perform stable communication without deteriorating can be selected.

Such an elevator remote monitoring system accumulates learning data consisting of radio wave conditions and communication quality from the base station used every time monitoring data is reported, and can perform the most stable communication using the accumulated learning data. By defining the base station, it is possible to perform communication that is more stable on average than when the base station is selected only from the radio wave condition.
In addition, since a learning function is added to the elevator monitoring apparatus, it can be used continuously without being affected by the model change of the wireless network terminal.

Embodiment 2. FIG.
FIG. 7 is a functional block diagram of an elevator monitoring apparatus according to Embodiment 2 of the present invention.
The elevator remote monitoring system according to the second embodiment of the present invention is different from the elevator remote monitoring system according to the first embodiment except for the elevator monitoring device 6B, and the other parts are the same. Description is omitted.
As shown in FIG. 7, the elevator monitoring apparatus 6B according to the second embodiment is different from the elevator monitoring apparatus according to the first embodiment in that an initial value preparation means 19 is added, and the rest is the same. The same reference numerals are attached to the same parts, and the description is omitted.

When the elevator 1 is newly installed, the initial value preparation means 19 is operated at a predetermined period, for example, for a predetermined period, for example, every one hour, for reporting every hour, for example, before full-scale operation. Note that one week is given as an example of the predetermined period, but the present invention is not limited to this, and a period of one day or more may be appropriately determined.
The initial value preparation means 19 inquires and obtains the received electric field strength of radio waves from the base stations 9a and 9b that are currently connectable to the wireless network terminal 7 every time the reporting time is reached, and based on the obtained data, A command is established to establish communication with the base stations 9a and 9b having a high received electric field strength and to transmit test data.

  When the base stations 9a and 9b are designated and a command to transmit test data is received, the wireless network terminal 7 establishes communication with the designated base stations 9a and 9b and transmits the test data to the remote monitoring center 2 Send to. At this time, the radio network terminal 7 measures the received electric field strength of radio waves from the base stations 9a and 9b with which communication has been established, and calculates the throughput when transmitting test data.

The initial value preparation means 19 collects the identification information of the base stations 9a and 9b that establish communication, the received electric field strength and throughput from the radio network terminal 7, and the current time from the clock IC 18 each time the test data is transmitted.
The initial value preparation means 19 stores the base station identification information, the received electric field strength, and the throughput collected in a sheet in which learning data is stored in the current time zone.

Further, the initial value preparation means 19 reads the learning data stored in each sheet when the learning data collection and storage in a predetermined period is completed, and uses an evaluation function using the received electric field strength and the throughput as variables. The most highly evaluated base stations 9a and 9b are selected as the optimum base stations 9a and 9b in the time zone.
Further, the initial value preparation means 19 stores the identification information of the base station selected as the optimum base station 9a, 9b for each time slot in the base station identification information column of the corresponding time slot in the base station table 16. .

  In this way, learning data is collected over a predetermined period using test data before actual operation is started, and optimum base stations 9a and 9b for each time zone are collected using the collected learning data. Since the base station table 16 is selected, the base stations 9a and 9b can be selected based on the learning data immediately after the operation is actually started.

Embodiment 3 FIG.
FIG. 8 is a block diagram of an elevator remote monitoring system according to Embodiment 3 of the present invention.
The elevator remote monitoring system according to the third embodiment of the present invention is different from the elevator remote monitoring system according to the first embodiment in the remote monitoring center 2C and the elevator monitoring apparatus 6C. The same reference numerals are given and description thereof is omitted.
The remote monitoring center 2C according to the third embodiment collects learning data stored in the learning data table 15 from the elevator monitoring device 6C periodically monitored remotely by the remote monitoring center 2 according to the first embodiment. Features have been added.
When the elevator monitoring apparatus 6C according to the third embodiment is newly installed, the remote monitoring center 2C is inquired of learning data accumulated by the other elevator monitoring apparatus 6C immediately after activation. When there is learning data related to the base stations 9a and 9b existing in the vicinity of the inquired elevator monitoring device 6C, the remote monitoring center 2C transmits the learning data to the inquired elevator monitoring device 6C.

  Thus, since the elevator monitoring apparatus 6C newly installed at the site can obtain the learning data stored in the remote monitoring center 2C immediately after startup, the load for storing the learning data in the elevator monitoring apparatus 6C is reduced. be able to.

It is a block diagram of the elevator remote monitoring system concerning Embodiment 1 of this invention. It is a figure which shows an example of arrangement | positioning of a remote monitoring apparatus and a base station. It is a functional block diagram of the elevator monitoring apparatus concerning Embodiment 1 of this invention. It is a data structure figure of the learning data table concerning Embodiment 1 of this invention. It is a data structure figure of the base station table concerning Embodiment 1 of this invention. It is a flowchart which shows the procedure of operation | movement of the elevator remote monitoring system concerning Embodiment 1 of this invention. It is a functional block diagram of the elevator monitoring apparatus concerning Embodiment 2 of this invention. It is a block diagram of the elevator remote monitoring system concerning Embodiment 3 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Elevator, 2 and 2C Remote monitoring center, 3 Remote monitoring device, 4 Wireless network, 5 Elevator control device, 6, 6B, 6C Elevator monitoring device, 7 Wireless network terminal, 8 Public network, 9a, 9b Base station, 11 Monitoring Data acquisition means, 12 Monitoring data reporting means, 13 Learning data collection means, 14 Learning means, 15 Learning data table, 16 Base station table, 17 Memory, 18 Clock IC, 19 Initial value preparation means, 21, 22 Service area.

Claims (3)

In a remote monitoring system comprising an elevator monitoring device that reports monitoring data related to the operating state of an elevator to be acquired to a remote monitoring center via a wireless network terminal and a wireless network,
The wireless network terminal can establish communication with a plurality of base stations connected to the wireless network,
The elevator monitoring device establishes communication with the optimal base station for each predetermined time period selected by learning, and reports the monitoring data by monitoring data reporting means for reporting the monitoring data. Each time the identification information of the base station that established the communication, radio wave condition and communication quality are collected and stored as learning data, learning data collecting means, and the accumulated learning data is analyzed to reselect the optimal base station And an elevator remote monitoring system characterized by comprising learning means.   The elevator monitoring device transmits test data to the remote monitoring center at the time of reporting in a predetermined period over a predetermined period before newly started operation and communicates every time the test data is transmitted. The initial value preparation means for collecting the identification information, radio wave state and communication quality of the established base station and storing it as learning data, analyzing the stored learning data after a predetermined period of time and selecting the optimum base station The elevator remote monitoring system according to claim 1. The remote monitoring center collects learning data from the elevator monitoring device that is regularly remotely monitored, and when there is an inquiry about learning data from the newly installed elevator monitoring device, the newly installed remote monitoring center Reply with learning data about the base station near the elevator monitoring device,
2. The elevator remote monitoring according to claim 1, wherein when the elevator monitoring device is newly installed, the remote monitoring center inquires of the remote monitoring center whether or not there is learning data accumulated by the other elevator monitoring device immediately after startup. 3. system.

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