KR20130116392A - Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality - Google Patents

Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality Download PDF

Info

Publication number
KR20130116392A
KR20130116392A KR1020120021935A KR20120021935A KR20130116392A KR 20130116392 A KR20130116392 A KR 20130116392A KR 1020120021935 A KR1020120021935 A KR 1020120021935A KR 20120021935 A KR20120021935 A KR 20120021935A KR 20130116392 A KR20130116392 A KR 20130116392A
Authority
KR
South Korea
Prior art keywords
mobile terminal
psi
time synchronization
time
psi system
Prior art date
Application number
KR1020120021935A
Other languages
Korean (ko)
Inventor
이상훈
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020120021935A priority Critical patent/KR20130116392A/en
Publication of KR20130116392A publication Critical patent/KR20130116392A/en

Links

Images

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/052—Linking several PLC's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/10—Details of telephonic subscriber devices including a GPS signal receiver

Abstract

The present invention relates to a method for synchronizing the time of a PLC system, and when a mobile terminal having a GPS function enters a certain distance from the PL system, the wireless terminal recognizes and connects to each other through a short range wireless communication function. The mobile terminal transmits the time information obtained through the GPS function to the PI system, and the PI system updates its time based on the time information received from the mobile terminal. Time synchronization can be performed even when the PSI system cannot connect to the management computer, enabling accurate and cost effective time synchronization.

Description

Method for Time Synchronization of Programmable Logic Controller System Using Mobile Device with Built-In GPS Functionality}

The present invention relates to a method of synchronizing the time of a programmable logic controller (PLC) system, and in particular, it is possible to perform the time synchronization of the PSI system using a mobile terminal having a GPS function.

The PI system is equipped with various functions such as numerical operation, logic operation, sequencing control, timer, counter, etc., and has a memory to store computer programs and data. Special computer that can be controlled.

The PSI system replaces the existing industrial control panel functions of relays and can easily cope with the addition and change of equipment.

Such a system needs to be time synchronized for various purposes, and time synchronization is important to accurately record event records or alarms of several independently operated systems.

To this end, conventionally, a method using communication with a management computer, a method in which each PSI system includes a GPS module, and the like are used.

However, there is a problem that the method of performing time synchronization through communication with the management computer is not applicable to the off-line PSI system, so that each PSI system has a GPS module (receiver + antenna). There is a problem that the method is not a small additional cost.

Accordingly, the present invention has been made to solve the above problems, to perform the time synchronization of the PSI system using a mobile terminal with a built-in GPS function, it is possible to perform more convenient and accurate time synchronization The purpose is.

In order to achieve the above object, the time synchronization method of the PSI system using a mobile terminal with a built-in GPS function according to the present invention, a mobile terminal having a GPS function and a short-range wireless communication function, and a short-range wireless communication function Establishing a connection by recognizing each other including the PI system; Transmitting, by the mobile terminal, time information obtained through the GPS function to the PSI system using the short range wireless communication function; And receiving, by the PI system, time information from the mobile terminal, and updating its time based on the received time information.

The PSI system may authenticate the mobile terminal and terminate the connection if it is not authenticated.

The mobile terminal may transmit authentication information to the PSI system, and the PSI system may perform authentication by comparing authentication information received from the mobile terminal with preset authentication information.

The mobile terminal may display a list of recognized devices on the screen, and may process the user to select a PSI system to establish a connection.

According to the present invention, each PSI system updates its time by performing short-range wireless communication with a mobile terminal located within a certain distance.

Therefore, the time synchronization can be performed even in a situation where the PIEL system cannot be connected to the management computer.

It is not necessary to provide a separate GPS device for each PSI system, and it is possible to perform time synchronization of several PSI systems using a single mobile terminal, thereby enabling cost-effective time synchronization.

In addition, the use of GPS reference time allows the PSI system to perform precise time synchronization.

1 is a configuration embodiment in which a mobile terminal and a PSI system interoperate with each other,
2 is an embodiment of a time synchronization method according to the present invention;
3 is an example of a user interface screen that allows an administrator to select a target for time synchronization;
4 is an example of a method of authenticating a mobile terminal with a PSI system.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a state in which the mobile terminal 13 and the PSI system 15 interoperate with each other using short-range wireless communication.

The mobile terminal 13 may be various types of devices that are mobile and have a built-in near field communication module 13-1 and a GPS module 13-2. Specific examples of the mobile terminal 13 may include a manager's smartphone or tablet computer.

Signals received from the GPS satellites 11 through the GPS (Global Positioning System) module 13-2 include time information as well as position information.

Since the mobile terminal 13 is frequently exposed to an environment capable of receiving GPS satellite signals, it is possible to continuously maintain accurate time information.

The mobile terminal 13 and the PSI system 15 both have short-range wireless communication modules 13-1 and 15-1, and should be modules using the same short-range wireless communication method. Wireless communication methods used by the short range wireless communication modules 13-1 and 15-1 may be various, and examples thereof include Bluetooth.

Referring to FIG. 2, an embodiment of performing time synchronization of the PSI system 15 using the mobile terminal 13 according to the present invention will be described.

When the mobile terminal 13 enters a certain distance from the PSI system 15, the mobile terminal 13 and the PSI system 15 recognizes each other through the short-range wireless communication module (13-1, 15-1) Make a connection (S21).

In step S21, the procedure in which the mobile terminal 13 and the PSI system 15 recognize and connect to each other is determined according to a wireless communication method used by the short range wireless communication modules 13-1 and 15-1. It can be applied in various ways.

For example, when the wireless communication method is Bluetooth, the near field wireless communication modules 13-1 and 15-1 of the mobile terminal 13 and the PSI system 15 transmit a request message for requesting connection to the other party, and send the message. The received short range wireless communication modules may be connected to each other by transmitting an acknowledgment message.

In addition, the short range wireless communication modules 13-1 and 15-1 of the mobile terminal 13 and the PSI system 15 may set conditions regarding channels to exchange data with each other in the process of establishing a connection.

When a connection is established between the mobile terminal 13 and the PSI system 15 through step S21, the mobile terminal 13 acquires time information obtained from the GPS satellite 11 through its GPS module 13-2. By using the short-range wireless communication module 13-1 to transmit to the PSI system 15 (S22).

At this time, it may be transmitted periodically until the connection is terminated for accurate reception of time information, or may continue to be transmitted until a response indicating that time information is correctly received from the PSI system 15 is received.

Upon receiving the time information transmitted by the mobile terminal 13 in step S22, the PSI system 13 updates its time based on the received time information (S23).

Meanwhile, since a short range wireless communication module such as Bluetooth is employed in various devices, various devices may not exist to perform time synchronization with the mobile terminal 13 around the place where the PSI 15 is located.

In this regard, the mobile terminal 13 may display information about each recognized device on the screen, and process the manager to select a PSI system to establish a connection.

3 shows an example of a user interface screen 30 that allows an administrator to select a target for time synchronization, and a list of various devices around the mobile terminal 13 is displayed.

The administrator checks and selects a check box of the PSI system to perform time synchronization among the check boxes 31, 32, and 33 provided in each item, and then clicks the time synchronization button 34. Then, the mobile terminal 13 establishes a connection with the corresponding PI system and transmits time information to the corresponding PI system.

Since the PSI 15 is also important for security, time synchronization can be configured to be performed only by an authorized mobile terminal or an administrator.

In this case, the PSI system 15 does not establish a connection with the mobile terminal 13 when the authentication is not successful, terminates the connection, or ignores the time information received from the mobile terminal 13. Do not perform time synchronization via.

The method of authenticating the counterpart of the PSI system 15 to perform time synchronization may be variously configured as necessary.

As a specific example, authentication information may be used. For this purpose, the PI system 15 may maintain authentication information for identifying legitimate authority, and such authentication information may be set in advance by an administrator.

Examples of the authentication information may include information that can uniquely identify the mobile terminal, such as a media access control (MAC) address of the mobile terminal, and information that can be arbitrarily set by an administrator, such as an administrator ID and password.

Referring to FIG. 4, an example in which the PSI 15 performs time synchronization only with an authorized mobile terminal based on the authentication information will be described.

The PSI system 15 requests authentication information to the connected mobile terminal 13 (S41), and the mobile terminal 13 transmits authentication information to the PSI system 15 (S42).

In other words, if the authentication information is a MAC address, the mobile terminal 13 confirms and transmits it. If the authentication information is an administrator's ID and password, the mobile terminal 13 receives the input from the administrator or transmits the corresponding information previously input by the administrator.

Upon receiving the authentication information from the mobile terminal 13, the PSI system 15 compares the predetermined authentication information with the received authentication information (S43), and if they match with each other, the authentication is successful. Perform the procedure (S44, S45).

However, if the comparison result in step S43 does not match each other, time synchronization through the corresponding mobile terminal is not performed (S46).

It is to be understood that the present invention is not limited to the above-described embodiment, and that various changes and modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. to be.

11: GPS satellite 13: mobile terminal
13-1,15-1: Near field communication module
13-2: GPS Module 15: Fielcy System

Claims (4)

A mobile terminal having a GPS function and a short range wireless communication function and a PSI system having a short range wireless communication function recognize and connect to each other;
Transmitting, by the mobile terminal, time information obtained through the GPS function to the PSI system using the short range wireless communication function; And
And receiving the time information from the mobile terminal by the PI system and updating its time based on the received time information. The method of claim 1,
And the PSI system authenticates the mobile terminal and terminates the connection if the PSI system is not authenticated. 3. The method of claim 2,
The mobile terminal transmits authentication information to the PSI system, and the PSI system performs authentication by comparing authentication information received from the mobile terminal with preset authentication information. Synchronization method of the Pelsi system using a mobile terminal. The method of claim 1,
The mobile terminal displays a list of recognized devices on the screen, and processes the user to select a PSI system to establish a connection, the time synchronization method of the PSI system using a mobile terminal with GPS.
KR1020120021935A 2012-03-02 2012-03-02 Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality KR20130116392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120021935A KR20130116392A (en) 2012-03-02 2012-03-02 Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120021935A KR20130116392A (en) 2012-03-02 2012-03-02 Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality

Publications (1)

Publication Number Publication Date
KR20130116392A true KR20130116392A (en) 2013-10-24

Family

ID=49635458

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120021935A KR20130116392A (en) 2012-03-02 2012-03-02 Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality

Country Status (1)

Country Link
KR (1) KR20130116392A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160071739A (en) * 2014-12-12 2016-06-22 (주)에이텍티앤 Payment System capable of Active Time Synchronization and Control Method for the same
US9485083B2 (en) 2013-11-20 2016-11-01 Electronics And Telecommunications Research Instit Method and apparatus for time synchronization between nodes
KR20170104305A (en) * 2016-03-07 2017-09-15 엘에스산전 주식회사 Relay and synchronization system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9485083B2 (en) 2013-11-20 2016-11-01 Electronics And Telecommunications Research Instit Method and apparatus for time synchronization between nodes
KR20160071739A (en) * 2014-12-12 2016-06-22 (주)에이텍티앤 Payment System capable of Active Time Synchronization and Control Method for the same
KR20170104305A (en) * 2016-03-07 2017-09-15 엘에스산전 주식회사 Relay and synchronization system

Similar Documents

Publication Publication Date Title
AU2019344067B2 (en) Wireless access credential system
US8923817B2 (en) Mobility device security
US10493955B1 (en) Internet of vehicles system performing connection authentication through a public network and connection method
CN107483715A (en) The method and system of terminal and equipment communication, terminal, storage medium
RU2014129938A (en) SYSTEMS AND METHODS OF REMOTE MONITORING OF MEDICAL DEVICES
TWI548282B (en) Driving recorder with communication module and method thereof
EP3862899A1 (en) Information communication apparatus, authentication program for information communication apparatus, and authentication method
CN105471815A (en) Internet-of-things data security method and Internet-of-things data security device based on security authentication
US9742810B2 (en) Network node security using short range communication
JP2014032667A (en) Method and system for authenticating user in remote access to at least one automobile system of automobile
US20150372995A1 (en) Asset guardian
KR20130116392A (en) Method for time synchronization of programmable logic controller system using mobile device with built-in gps functionality
US20150142937A1 (en) Method and system for remote equipment data installation
JP2014207549A (en) Position information origination device, and authentication system therefor
KR20150081387A (en) Certification System and Method For User
CN113841185A (en) System and method for a doorbell device to initiate a state change of an access control device and/or control panel in response to two-factor authentication
JP5960181B2 (en) Network authentication method for securely verifying user identification information using user location information
KR102271329B1 (en) Method for Accessing Network by using Near Field Communication
TW201531144A (en) Wireless bidirectional data transmission system and transmission method thereof
KR101576039B1 (en) Network authentication method for secure user identity verification using user positioning information
KR20160009955A (en) Method for connecting wireless terminal to vehicle
US20210345106A1 (en) Communication control device and communication control system
KR102271332B1 (en) Method for Accessing Network by using Bluetooth
KR102090818B1 (en) Certification Method For User
CN116546523A (en) Network configuration method, system and storage medium

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application