KR101775393B1 - Control Unit for Security and Safety Management in Electric Power Facility - Google Patents

Abstract

The present invention relates to a control unit capable of managing security by allowing a permitted worker to access an unmanned power transmission and distribution facility, and efficiently managing the safety of workers by identifying the position where the workers work and making a warning in the event of a dangerous situation. Since the present invention is installed in the unmanned power transmission and distribution facility, which is managed at a low cost through a simple method, the present invention is capable of controlling the access of an unpermitted person by controlling a locking device for the facility entrance; accurately identifying positions of permitted workers as well as their movement directions and speed; enabling the workers to identify positions of the workers in the facility on their own by displaying the positions on a worker terminal for each of the workers to secure the safety of the workers; and enabling a manager to accurately identify and control the positions of the workers. Moreover, if a worker approaches a dangerous zone in the facility, the present invention sends a warning signal to the worker. If there is work which has to be done by a group of workers, the entrance is opened only when every worker arrives, and also, even if some of the workers leave the work, a warning is made so that the workers are forced to comply with safety regulations and accidents, caused as the workers disobey the rules, are prevented.

Description

[0001] The present invention relates to a control unit for security and safety management,

The present invention relates to an apparatus and a method for controlling the unauthorized transmission and distribution facilities by controlling access to only an authorized worker so that the authorized worker can access the apparatus, And a control unit for efficiently managing the safety of workers, such as issuing a danger warning when it is set.

Generally, in the transmission and distribution facilities such as transmission line, distribution line or switchboard, special high pressure or super special high voltage of tens of thousands of volts or hundreds of thousands of volts is applied, so the area where transmission and distribution facilities are installed is an extremely dangerous area always followed by the risk of electric shock accident. Therefore, special care is required when entering or leaving the transmission / distribution facility or near the transmission / distribution facility or working in the transmission / distribution facility.

In other words, it is necessary to strictly control the entry and exit of unauthorized persons in transmission and distribution facilities, and even if it is a professional worker who is authorized to enter and leave, There should be enough people in and out together. In addition, various terminals and cable heads with high voltage are required to have strict safety management such as prohibiting access within a certain distance. In case of performing dangerous and special precautions such as live ship construction, the risk of accidents is high, so the work is carried out based on the first set of safety regulations.

However, due to the lack of proper manpower and inappropriate practices such as on-the-spot response to the field, these safety regulations are often not kept properly, so it is dangerous to carry out dangerous work alone or with insufficient personnel.

Particularly, in case of electric power lines or coaxial lines where underground transmission and distribution lines are installed, it is necessary to control access, but it is necessary for the operators themselves as well as the managers to know where the workers are located. However, It is necessary to install expensive facilities such as a location measurement sensor network and a separate line construction for this purpose. Therefore, even if such a monitoring device is installed, a separate management staff is required to operate the facility There were many realistic problems.

Accordingly, in the present invention, access control of transmission and distribution facilities is controlled using an Internet of Things (IOT) technology based on Bluetooth low energy (BLE) which is economical, easy to construct and easy to manage, And to provide a control unit capable of tracking the position of the worker within the work area. Here, BLE technology is a technology that overcomes the disadvantages of inefficient power consumption in existing Bluetooth technology, and wireless connection of two-way communication between various devices ensures long-term battery life. The product development phase also provides seamless compatibility with smartphones, a rich user interface and the benefits of quick and easy connectivity. Recently, BLE technology has been applied to major smartphone new products along with major operating systems such as iOS, Android, and Windows. In recent years, beacon technology has emerged as a simple signal generating device that transmits its own unique identifier information (ID), and a variety of object internet technologies using the same are emerging.

A beacon using BLE technology is a simple signal generator that sends its own unique identifier information (ID or UUID), which uses a Bluetooth 4.0-based protocol to transmit signals to nearby devices using low power Bluetooth (BLE) . The beacon transmits a beacon signal at a predetermined time interval. The beacon signal includes various codes of the beacon and the intensity of the beacon signal transmitted from the beacon, that is, the transmission signal strength (Tx Power) Code. Although the unique identification code of the beacon may be somewhat different depending on the standard proposal company or the manufacturer, the unique identification code in Apple's i-beacon standard includes a header, a universal user identification code called a universally unique identifier (UUID), a major ID and a minor ID It contains the Tx Power that it sends, that is, the transmitted signal strength. Even if Google's Eddie Stone Beacon standard is applied, it is not much different. In the Ediston beacon, UID is an identifier corresponding to the UUID of the eyebone, and Instance is an identifier corresponding to the Major ID and Minor ID of the eye beacon.

The advantage of beacons is that they can be used with less worry about the power consumption of the devices because of the low power wireless communication. In addition, existing NFC can operate within 10cm, while beacons can cover up to tens of meters. Some products are even recognizable at distances well over 100 meters. The beacon can also transmit a generic unique identifier specified by a specific app or OS using Bluetooth low power proximity detection. Therefore, a mobile device equipped with a BLE protocol module can identify a beacon for transmitting a beacon by checking the unique identifier transmitted from the beacon. The beacon transmitting signal strength (TX power) transmitted from the beacon and the intensity (Received Signal Strength Indicator, abbreviated as RSSI), the physical distance between the receiver and the beacon can be confirmed using the signal distance characteristic.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in an effort to solve the above problems, and it is an object of the present invention to provide an apparatus and a method for controlling unauthorized access to an unauthorized person by controlling a non- Not only precisely grasps the work location of the worker who is authorized to enter and leave, but also displays the current position of the worker on the screen of the worker terminal possessed by each worker so that the worker can accurately position his or her own position in the transmission and distribution facility And to provide a security and safety management control unit of a transmission and distribution equipment capable of accurately ascertaining and controlling the current position of workers in a manager's viewpoint.

In addition, if an operator is approaching or approaching a hazardous area in a transmission / distribution facility, a danger warning signal can be sent to the worker. In case of dangerous work requiring work with a set of workers, In addition, the security and safety management of transmission and distribution facilities that can prevent the occurrence of safety accidents due to non-compliance with the safety regulations by enforcing the safety regulations in such a way that, for example, And to provide a unit.

In order to achieve the above object, the security and safety management control unit of the transmission and distribution equipment according to the present invention is installed in an unmanned transmission and distribution facility, and controls the locking and unlocking device for the entrance and exit of the transmission and distribution facility, A safety determination unit for determining a risk and a safety state of the worker; and a control unit for controlling the operation of the worker terminal based on the BLE signal transmitted from the outside of the doorway And a communication unit for exchanging signals with the operator terminal and the management server through a wired or wireless communication network, the access control unit comprising: When receiving an opening request signal for the entrance / If the number of the terminal identification codes received by the base BLE receiving unit and the respective terminal identification codes are the same as the identification code information previously transmitted from the management server, the control unit controls the push-button unit to open the entrance, Or if at least one of the terminal identification codes or the terminal identification codes is different from the identification code information, the terminal transmits an authentication light signal including the terminal identification codes to the management server, And the position determination unit controls each of the position identification codes transmitted from the plurality of position signal beacons spaced apart from each other at a predetermined position in the transmission / The worker terminal receives the location identification code And calculating the approach distance between the worker terminal and each of the position signal beacons using the transmission signal strength and the received signal strength for each of the position identification codes and transmitting the current position, Wherein the safety judging unit receives the risk identification code transmitted by the danger signal beacon installed in the hazardous area in the transmission and reception equipment and transmits the risk identification code together with the received signal strength for the risk identification code, Calculates the approach distance between the worker terminal and the beacon signal using the transmission signal strength and the received signal strength for the risk identification code, calculates the movement direction and the movement speed of the worker terminal, An image that is in close proximity to the beacon or within a predetermined distance from the beacon of the beacon And transmits the position identification code and the received signal strength to the worker terminal when the worker terminal approaches the danger signal beacon at a predetermined speed or more, determines that the worker is in a dangerous state and generates a danger warning signal, When the number of the terminal identification codes is smaller than the number of the terminal identification codes, the safety warning signal is generated and the communication unit determines the current position, the moving direction, and the moving speed calculated by the position determination unit, And transmits the generated warning message to the server and the operator terminal so that the warning message or the safety warning signal is displayed on the display screen together with the drawing of the transmission / Or to generate a safety alarm It characterized in that it is preferable.

Further, in addition to the above-described features, the position determination unit may determine the current position to be the first position signal beacon located at the shortest first approach distance of the approach distance and the first position signal beacon, From the first position signal beacon to the second position signal beacon located at the second shortest distance from the first position signal beacon, and when the first approach distance is equal to or greater than a predetermined distance, From the first positional signal beacon and the second positional signal beacon from the first positional signal beacon and the second positional distance from the second positional signal beacon, and determines whether or not the first approach distance is equal to or greater than the predetermined distance , Wherein the first approach distance and the second approach distance are at the same time more distant or simultaneously approaching than before the approach distance calculation The first position signal beacon is calculated to a position away from the first position signal beacon by a first approach distance to the opposite side of the second position signal beacon.

Further, in addition to the above-described features, the transmission and distribution facility security and safety management control unit according to the present invention is characterized in that the position determination unit determines that the moving direction is the same as the first approach distance and the second approach distance And when the first approach distance is closer to the first position signal beacon and the second approach distance is closer to the first position signal beacon, the second approach distance is closer than before the approach distance calculation, From the first position signal beacon to the second position signal beacon when the first approach distance and the second approach distance are simultaneously more distant than before the approach distance calculation, And the position determining unit calculates the moving speed in a direction away from the opposite side, When the first approach distance is within the predetermined distance at the start time of the unit time and / or the end time of the unit time, the value obtained by dividing the value obtained by varying the first approach distance during the unit time by the unit time The first approach distance is greater than the first distance when the first approach distance exceeds the predetermined distance at the start time of the unit time and the end time of the unit time, Wherein the second approach distance is calculated by dividing the absolute value of the changed value by 2, and then dividing the absolute value by the unit time and calculating the value as the transmission / distribution facility security and safety management control unit.

As described above, the transmission and distribution facility security and safety management control unit according to the present invention uses the location identification code, the transmission signal strength and the received signal strength transmitted from a plurality of location signal beacons installed in the transmission and distribution facility, It is possible to measure the current position of the worker's terminal as well as the moving direction and the moving speed by using the measured distance. Therefore, it is possible to install the equipment for locating the worker in the transmission and distribution facilities inexpensively and easily.

That is, in the transmission and distribution facility security and safety management control unit, it is possible to accurately grasp the current position, the moving direction and the moving speed of the worker terminal by using the object Internet based beacon which can be configured at low cost, Therefore, the present invention can be implemented easily at an economical cost without using a sensor network or a CCTV using an expensive position sensor or the like.

In addition, the transmission and distribution facility security and safety management control unit according to the present invention can control access to unauthorized persons by controlling a locking device for the entrance and exit of the transmission and distribution equipment, and can send only authorized workers to enter and exit. It has the effect of enhancing the security of transmission and distribution facilities which are important facilities but operated unmanned.

In addition, since the worker is identified using the terminal identification code transmitted from the worker terminal carried by the worker, the worker can be authorized in advance or requested in the field, thereby allowing the authorized worker to access the worker and control the unauthorized person It is effective.

It is possible to strictly comply with the safety regulations such as the case where all the personnel are all turned on and the locking device of the door is opened, .

In addition, when the authorized worker requests opening of the door, there is an effect that the confirmation of the authorized workforce can be automatically confirmed by the control unit using the terminal identification code, When the worker changes his / her workforce to work, he / she can force the worker to be approved for the change of personnel without opening the door of the door.

In addition, since the present position of the worker is displayed on the screen of the worker's terminal to each worker, the worker can accurately grasp his / her position in the transmission and distribution facility by himself or herself so that workers can quickly cope with an emergency such as an accident In addition, since it is possible to quickly and accurately search for the desired work position, the work efficiency can be improved.

In addition, when the number of worker terminals in the worker is smaller than the number of authorized worker terminals when passing through a door, some workers are required to issue a safety alarm because they think that some of them are deviating during the work. There is an effect that can be prevented. In the present invention, when the number of the worker terminals transmitting the respective location identification codes and the received signal strength is smaller than the number of the terminal identification codes, it is determined as a safety rule violation state and a safety warning signal is transmitted to the worker terminal and the management server .

In addition, when the worker terminal is close to the hazardous area in the transmission and distribution facility or the worker terminal located within a predetermined distance from the dangerous area approaches the dangerous area at a certain speed or more, it is determined that the worker is in a dangerous state, Terminal, and management server, it is effective to prevent workers' safety accidents because workers are in danger zone or danger warning is issued when workers are approaching danger zone quickly.

In addition, since the management server can display the current position, the moving direction, and the moving speed of the worker terminal together with the drawing of the transmission and distribution equipment on the display device, the manager can accurately grasp and control the current position of the worker It is possible to respond promptly in the event of an emergency such as an accident.

In the present invention, since the distance between the worker terminal and the position signal beacon is calculated, and the unique position decision logic is used to calculate the current position, the movement direction and the movement speed of the worker terminal, the beacon distance measurement error is overcome It is possible to measure the accurate current position, the moving direction and the moving speed.

In addition, the unique decision logic used herein can calculate the distance between the worker terminal and the position signal beacon, the current position of the worker terminal, the movement direction, and the movement speed, even if the interval between the beacon and the beacon is not constant .

1 is an overall system configuration diagram including a transmission and distribution facility security and safety management control unit according to the present invention.
2 shows an example of a configuration of a unique identification code transmitted by a beacon included in the present invention.
3A to 3E illustrate the concept of calculating the current position and the moving direction of the worker terminal in the present invention.
4A to 4C illustrate a concept of calculating a current position of a worker terminal in consideration of a beacon distance measurement error in the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. Accordingly, those skilled in the art can easily implement the technical idea of the present invention. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments belong. Although the terms used in the present invention are selected as general terms that are widely used at present, there are some terms selected arbitrarily by the applicant in specific cases. In this case, since the meaning is described in detail in the description part of the present invention, It is to be understood that the present invention should be grasped as a meaning of a term other than the term.

It is to be understood that the expressions "first", "second", "first" or "second", among other descriptions of various embodiments, may modify various elements of the embodiments, but do not limit the elements. For example, the representations do not limit the order and / or importance of the components. The representations may be used to distinguish one component from another.

It should be noted that the terms such as " comprising " or " may include " may be used in describing the embodiments to indicate the presence of the inventive function, operation, or element, Not limited. Also, in the description of the various embodiments, terms such as "comprise" or "have ", and the like, specify that the presence of stated features, integers, But do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

The terminology used in the description of the various embodiments is used only to describe a specific embodiment and is not intended to limit the embodiments. The singular expressions include plural expressions unless the context clearly dictates otherwise.

The operator terminal described in various embodiments includes various electronic devices capable of wireless communication, such as smart phones, tablet PCs, mobile phones, videophones, electronic book readers, laptop PCs, netbook computers, PDAs, And other similar devices.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described with reference to the drawings. 1 is a schematic diagram of an overall system including a security and safety management control unit of a power transmission and distribution facility according to the present invention. As shown in FIG. 1, the security and safety management control unit of the transmission and distribution equipment according to the present invention is installed in the transmission and distribution facility 10 operated by an unmanned person. However, the present invention is applicable to underground facilities such as an underground power line or a coaxial cable where transmission and distribution lines and facilities are installed, a circuit breaker or a transformer for transmission and distribution, and the like. It is possible to exert the optimum effect when it is applied to an area where access control to an unattended person such as an installed area or a switchboard is required and the safety management of the worker is required. Especially, it is very effective when it is applied to underground electric power facilities such as a transmission and distribution facility where dangerous areas exist everywhere and it is difficult to grasp the work position of workers while many workers are working.

As shown in FIG. 1, the security and safety management control unit 100 of the transmission and distribution equipment according to the present invention includes a BLE receiver 130, a position signal beacon 300, a beacon signal 600, a worker terminal 200, It is preferable to install the server 400 in a system including the server 400. It is installed in a proper place in the transmission and distribution facility 10 and controls the locking device 120 for the entrance 150 of the transmission and distribution facility 10 to control the non- A position determination unit 102 for determining the position of the worker terminal 200 carried by workers authorized to enter and exit, a safety determination unit 102 for determining the risk and safety state of the workers, A BLE reception unit 104 for receiving a terminal identification code received and transmitted by the BLE receiver and a communication unit for exchanging signals with the worker terminal 200 or the management server 400 through a wired or wireless communication network 105) Castle it is preferable to. Data communication with the worker terminal 200 through the wireless communication network 500 and data communication with the management server 400 through a wireless communication network 500 or a wired communication network .

The BLE receiver 130 is installed outside the entrance 150 of the transmission and distribution facility 10 and receives the terminal identification code to be transmitted as the BLE signal of the worker terminal 200, To the mobile terminal. The BLE receiver 130 and the BLE receiver 104 may be wired or wirelessly connected in some cases.

The position signal beacons 300 are spaced apart from each other at predetermined positions in the transmission and distribution equipment 10 so that the position beacons 300 continuously transmit their own position identification codes including transmission signal strength at predetermined time intervals, It is preferable that the worker terminal 200 be installed at intervals such that at least two or more of the position identification codes can always be received. The hazard signal beacon 600 is installed in the hazardous area in the transmission and distribution facility 10 so that the hazard identification code including the transmitted signal strength is continuously transmitted at predetermined time intervals, The beacon 600 may be installed in each of the hazardous areas. If the dangerous area is wide, it is also possible to provide a plurality of the danger beacons 600 in one dangerous area. The position signal beacon 300 and the danger signal beacon 600 may use beacons conforming to the standard of the normal beacons, that is, the beacons conforming to the standard of the beacons or the ediston beacons, or may use other standard or nonstandard beacons. Do. Since the location signal beacon 300 and the danger signal beacon 600 need only transmit a unique identification code including the transmission signal strength of the location signal beacon 300 and the danger signal beacon 600, As described above, the low power Bluetooth (BLE) standard is used so that even if the battery built-in beacon is used, it can be used for many years without replacing the battery. However, underground power stations and other transmission and distribution facilities are provided with permanent power sources that can be used for illumination or other purposes, so it is desirable to supply power through permanent power sources.

It is preferable that the operator terminal 200 enable wireless data communication through the communication unit 105 of the control unit 100 and the wireless communication unit 500. The wireless data communication with the communication unit 105 It is preferable to independently transmit the terminal identification code as a BLE signal at a constant time interval. The BLE reception unit 104 receives the terminal identification code transmitted as the BLE signal through the BLE signal receiver 130 installed outside the entrance 150 as described above. After the worker terminal 200 passes through the entrance 150 and enters the transmission / distribution facility 10, the location signal beacon 300 receives a location identification code transmitted from the location signal beacon 300, And transmits the location identification code and the risk identification code to the communication unit 105 together with the received signal strength for each of the location identification code and the hazard identification code.

The management server 400 is installed in a place where a remote manager of the transmission and distribution facility 10 works and is connected to the communication unit 105 of the control unit 100 and the wireless communication unit 500 or the wired communication unit ) So that data communication is possible.

Here, the terminal identification code transmitted by the worker terminal 200 as a BLE signal, the location identification code transmitted by the location signal beacon 300, and the danger identification code transmitted by the danger signal beacon 600, Means the unique identification code of the beacon. The beacon transmits a BLE signal at a predetermined time interval. The BLE signal includes information on various codes of the BLE and information on the intensity of the beacon signal transmitted by itself, i.e., the transmission signal strength (Tx Power) , This is called a unique identification code. As shown in FIG. 2, the unique identification code 700 generally includes a header 710, a universal user identification code 720 called a Universally Unique IDentifier (UUID) ), A Major ID 730, and a Minor ID 740, as well as a Tx Power, i.e., a transmission signal strength, The configuration of FIG. 2 is an embodiment to which Apple's i-beacon standard is applied. Even if Google's Edistone beacon standard is applied, it is not so different. In the Ediston beacon, UID is an identifier corresponding to the UUID of the eyebone, and Instance is an identifier corresponding to the Major ID and Minor ID of the eye beacon. However, the present invention will be described as an example of Apple's i-beacon for the sake of convenience, but does not preclude the application of Google's Edistone beacons or other standard proposals.

Since the worker terminal 200 is assumed to have a plurality of workers, the terminal identification code must be assigned to each worker terminal 200 so that the worker terminal 200 can be identified. The location signal beacon 300 is transmitted to the transmission / The risk identification beacon 600 may be a plurality of dangerous beacons 600, since the location identification code is also provided to be able to be identified for each position signal beacon 300, The same is true for each identification. The universal user identification code 720 may be unified according to the type of each identification code such as the terminal identification code, the location identification code, and the risk identification code, although the universal user identification code 720 may be differently assigned to identify each identification code. , And it is also desirable to identify the mutual identification among the same identification code types by changing the major ID 730 or the minor ID 740. If the universal user identification code 720 is unified according to the type of each identification code, not only the system construction and management and the creation of the related program become easy, but also the identification and calculation speed become faster. For example, when there are a plurality of transmission and distribution facilities 10 to be managed by one remote management site, when a universal identification code of a location identification code is assigned to each transmission and distribution facility 10 in a unified manner, It is possible to easily distinguish the transmission and distribution equipment 10.

When the opening / closing control unit 101 receives an opening request signal for the entrance 150 from the worker terminal 200, the entrance control unit 101 determines the number of terminal identification codes sent from the BLE receiver 130, that is, The number of terminal identification codes transmitted from the worker terminal 200 carried by workers waiting in front of the doorway and the number of the terminal identification codes are equal to the identification code information previously transmitted from the management server 400 It is preferable to control the locking device 120 so that the entrance 150 is opened. Workers can be several people, depending on the type of work they are doing. The task of checking or repairing a special high-voltage or ultra-high voltage transmission and distribution facility is an extremely dangerous task, and of course many workers will participate. If there are multiple operators, it is preferable to receive an open request signal from one of the operator terminals 200 since it is not necessary to receive an open request signal from all the operators. However, it is preferable that means for transmitting a BLE signal is mounted on all of the worker terminals 200, so that each of the worker terminals 200 transmits the respective terminal identification codes and confirms all of them.

Upon receipt of the open request signal, the access control unit 101 determines that the identification code information has not been received from the management server 400 in advance, or that the number of terminal identification codes sent from the BLE receiver 130 If at least one of the terminal identification codes differs from the number in the code information or each of the terminal identification codes sent by the BLE receiver 130 is different from the terminal identification code in the identification code information, However, it is desirable to let the remote administrator approve and release some of them, since some of them are not authorized or authorized workers and unauthorized workers are mixed. In this case, the terminal identification code received by the BLE receiving unit 104 is transmitted to the management server 400 through the communication unit 105 in the authorization request signal, and the management server 400 transmits an approval approval signal It is preferable to control the keying device to open the doorway only when it is received through the communication unit 105. [

If the operator enters the inside of the transmission and distribution facility 10 after the entrance control unit 101 opens the entrance 150, the operator terminals 200 receive the location signal from the location signal beacons 300 Lt; RTI ID = 0.0 > 1 < / RTI > The number of the position signal beacons 300 installed in the transmission and distribution equipment 10 may be several to several tens or more depending on the size and environment of the transmission and distribution equipment 10. [ Preferably, the installation interval of the position signal beacon 300 is set at an interval at which the worker terminal 200 can receive the position identification code from at least two position signal beacons 300. The operator terminals 200 transmit the respective received signal strengths of the respective position identification codes and the respective position identification codes received by the operator terminals 200 to the control unit 100. At this time, 102 calculates an approach distance between the worker terminal 200 and each of the position signal beacons 300 using the respective transmission signal strengths and the respective received signal strengths for the respective position identification codes, The moving direction and the moving speed of the mobile terminal 200 are calculated and transmitted to the management server 400 and the worker terminal 200 through the communication unit 105. [

The method of calculating the approach distance between the operator terminal 200 and each of the position signal beacons 300 uses the principle that the signal intensity decreases and the RSSI value decreases as the distance increases, RSSI) and transmission signal strength (Tx Power). Since the formula for calculating is usually RSSI = -10n log d + Tx Power, it is also possible to calculate the distance d as d = 10 ^ ((Tx Power RSSI) / (10 * n)). Where n is a value related to the propagation loss and n is 2 in a space free of obstacles. The current position, moving direction, and moving speed calculation of the worker terminal 200 will be described later.

Meanwhile, the safety determination unit 103 receives the hazard identification code transmitted by the risk signal beacon 600 located near the dangerous area in the transmission / distribution facility 10, The access distance between the worker terminal 200 and the beacon 600 is calculated using the transmission signal strength and the received signal strength for the risk identification code, The moving direction and the moving speed of the worker terminal 200 are calculated from the approach distance, the moving direction, and the moving speed. If the worker terminal 200 is in proximity to the danger signal beacon 600, When the worker terminal 200 within a predetermined distance from the signal beacon 600 approaches the beacon 600 at a predetermined speed or more, It is preferable to self to send a hazard warning signal is determined to be in a critical state to the operator terminal 200 and the management server 400. The calculation of the distance between the operator terminal and the beacon of the danger signal uses the known method described above while calculating the distance between the beacon and the beacon 300. When the operator terminal 200 receives the beacon 600 , It is possible to determine whether the distance between the operator terminal 200 and the beacon 600 continuously decreases or not. In case of the speed at which the worker terminal 200 moves toward the beacon 600, it is possible to calculate the variation value, that is, the reduced distance, by dividing the unit time by the unit time. Here, the proximity distance refers to a distance before the dangerous state to the operator, that is, a distance to which an alarm can be issued to the operator with a certain allowance depending on the type of the dangerous zone or the field conditions, But it is a distance that can approach the near distance soon considering the moving speed. It is preferable that the predetermined distance or the proximity distance is determined to be an appropriate distance according to the site conditions.

If the number of the worker terminals 200 transmitting the position identification codes and the received signal strength is less than the number of the terminal identification codes, the safety determination unit 104 determines that the safety rules are violated, It is preferable to transmit a warning signal to the worker terminal 200 and the management server 400 through the communication unit 105. This allows a person working in the transmission and distribution facility 10 to open the door 150 It is possible to prevent a situation in which the number of persons is different from the authorized number at the time of the request, thereby preventing a safety accident caused by a shortage of working personnel. That is, it is effective to prevent a part of the worker from deviating once the door is opened after meeting the authorized personnel only when entering the entrance.

Meanwhile, the management server 400 transmits the identification code information including the terminal identification codes for the worker terminals 200 carried by all the workers to / from the transmission / distribution facility 10 to the remote manager And receives the authorization request signal from the remote controller when receiving the authorization request signal from the access control unit 101. The control unit 200 receives the authorization request signal from the remote controller, And displays the current position, the moving direction, and the moving speed received from the position determining unit 103 on the display device (not shown) along with the drawing of the transmission and distribution equipment, When the danger warning signal or the safety warning signal is received from the safety determination unit 104, the warning is displayed on the display device (not shown) It is preferred, In this way, the remote manager in the remote control of all working conditions within the transmission and distribution equipment 10 and can be monitored, it is possible to react quickly when accidents or other emergency situation.

The worker terminal 200 transmits the open request signal received from the operator to the entrance control unit 101 through the communication unit 105 and transmits the current position received from the position determination unit 103 to When the danger warning signal or the safety warning signal is received from the safety judgment unit 104, the alarm is issued so that the operator can recognize the danger warning signal or the safety warning signal. By doing so, the workers can easily and precisely grasp where they are working in the transmission and distribution facility 10, thereby promptly and accurately coping with a safety accident or an emergency situation, It is possible to easily and quickly access the apparatus, thereby improving the working efficiency.

Hereinafter, a preferred method for calculating the current position of the worker terminal 200 by the position determination unit 103 in the security and safety management control unit of the transmission and distribution apparatus according to the present invention will be described with reference to FIG.

Generally, distance measurement between a beacon and a beacon receiving terminal is relatively accurate at a close distance, but the error becomes worse as the distance becomes longer. In addition to the development of beacon technology, positioning techniques using beacons continue to evolve, so distance measurement errors are constantly improved, but errors must be considered when measuring beacons. Therefore, in the transmission and distribution facility security and safety management control unit according to the present invention, the distance between the position signal beacon 300 and the worker terminal 200 is calculated using a known method, but the current position of the worker terminal 200 The present invention provides an original decision algorithm capable of calculating a current position by minimizing a distance calculation error between the position signal beacon 300 and the worker terminal 200. [ That is, the current position of the worker terminal 200 is calculated according to the following determination method.

First, the position determination unit 103 finds the shortest approach distance among a plurality of position distinction codes received from the worker terminal 200 and a plurality of approach distances calculated from the received signal strengths, And a position signal beacon 300 corresponding to the position signal beacon is identified as a first position signal beacon, and a second short distance from the plurality of approach distances is found as a second approach distance, The beacon 300 is identified as a second position signal beacon.

3A and 3E, if the first access distance and the second approach distance are farther or closer to each other than before, the worker terminal 200 passes through the door 150 to the first position signal beacon 300a Or is in a state of being away from the last position signal beacon 300c. It is preferable that the position determining unit 103 continuously calculates the plurality of access distances and determines the distance from the position determining unit 103 through comparison with the previous calculation.

3A, the first access distance is a distance d1 between the worker terminal 200 and the first position signal beacon 300a when the first position signal beacon 300a is approaching the first position signal beacon 300a , And the second approach distance will be d2 which is the distance between the worker terminal 200 and the second position signal beacon 300b. (The third approach distance will be d3, which is the distance between the worker terminal 200 and the third position signal beacon 300c. However, in the present invention, the third approach distance or more is not used.) Therefore, d1 and d2 are close to each other State. Since the distance d2 as the second approach distance is longer than the distance s1 between the first position signal beacon and the second position signal beacon, the error is relatively large compared to d1. Therefore, since the reliability of d1 at a relatively short distance is high, it is preferable to discard d2 and use d1. That is, the current position of the worker terminal 200 is a first approach distance from the first position signal beacon 300a, which is the first position signal beacon, to the second position signal beacon 300b, which is the second position signal beacon 300b, d1 as the current position of the worker terminal 200. [

If the first approach distance and the second approach distance are both away from the last position signal beacon 300c as shown in FIG. 3E, the first approach distance will be d3, and the second approach distance will be d2 The second position signal beacon 300b is shifted from the third position signal beacon 300c, which is the first position signal beacon, to the second position signal beacon 300b, which is the second position signal beacon, As the current position of the worker terminal 200.

However, if it is not the case above, that is, if the first approach distance and the second approach distance are not simultaneously moved away from or closer to each other than before, then the first position signal beacon from the first position signal beacon The current location is the distance away.

As shown in FIG. 3B, if the first approach distance and the second approach distance are not simultaneously moved away from or close to each other, the worker terminal 200 transmits the first position signal beacon 300a and a second position signal beacon 300b which is the second position signal beacon. In this state, that is, in the state of FIG. 3B, if there is a movement of the worker terminal 200, the second approach distance will be increased when the first approach distance is decreased, and the second approach distance This is because the distance will increase. 3B, the current position of the worker terminal 200 is on s1 between the first position signal beacon 300a and the second position signal beacon 300b, . The reason why only d1 is used is that as the distance becomes shorter, the reliability of the distance measurement error of the beacon increases as described above.

3C shows a case where the worker terminal 200 is located between the first position signal beacon 300a and the second position signal beacon 300b but is closer to the second position signal beacon 300b. In this case, the first position signal beacon is the second position signal beacon 300b, the first approach distance is d2, the second position signal beacon is the first position signal beacon 300a, and the second approach distance is d1.

Figure 3d shows the spacing s2 between the second position signal beacon 300b and the third position signal beacon 300b than the spacing s1 between the first position signal beacon 300a and the second position signal beacon 300b. The worker terminal 200 is located between the first position signal beacon 300a and the second position signal beacon 300b, but d3 is the second approach distance. In this case, since the first approach distance and the second approach distance are farther away from each other or close to each other, the current position of the worker terminal 200 is the second position signal beacon 300b to the opposite side of the third position signal beacon 300c, which is the second position signal beacon, to the current position of the worker terminal 200 by the first approach distance d2.

If the first approach distance and the second approach distance are equal to or greater than the second approach distance, it is determined that the first approach distance and the second approach distance are equal to or less than the first approach distance from the first position signal beacon, The first position signal beacon and the second position signal beacon are separated from each other by the first position signal beacon between the first position signal beacon and the second position signal beacon, The present position determination algorithm can advantageously determine the current position accurately even if the interval between the position signal beacons 300 is not constant.

Hereinafter, a method for determining the current position of the worker terminal 300 in a case where the distance measurement error must be considered because the distance between the position signal beacons 300 is long using FIG. 4 will be described.

As described above, the distance measurement error increases as the distance between the beacon signal receiver and the beacon increases. The distance that can be measured within the allowable tolerance range varies depending on the maker or type of beacon, but it may be several meters or less in some cases. Therefore, in the present invention, when the first approach distance is equal to or greater than a predetermined distance, that is, when the error exceeds the allowable distance, the position determination method is changed in consideration of the allowable distance. Here, since the predetermined distance varies depending on the type of beacon as described above, it is a number determined in consideration of the type of beacon and installation environment.

As shown in FIG. 4A, even if the distance s1 between the two position signal beacons 300a and 300b is wide, if the first approach distance (d2 in this case) is within the predetermined distance, The first approach distance is used to determine the current position. However, when both of the first approach distance and the second approach distance exceed the predetermined distance, the first position signal beacon is separated from the first position signal beacon by the first approach distance and the second position signal beacon is separated from the second position signal beacon by the second approach distance As shown in FIG.

FIG. 4B shows a case where the distance s1 is shorter than the distance s1 between the two position signal beacons 300a and 300b even when the first approach distance and the second approach distance are combined due to the distance measurement error. In the case of FIG. 3C, The sum of the first approach distance and the second approach distance due to the measurement error is calculated to be longer than the interval s1 between the two position signal beacons 300a and 300b. In both cases, the position determining unit 103 determines whether the first position signal beacon 300b, which is the first position signal beacon and the second position signal beacon 300b, (P) at a position distanced by the second approach distance d1 from the worker terminal 300a to the current position of the worker terminal 200. [

A method for calculating the moving direction of the worker terminal 200 will now be described with reference to the result of calculating the approach distance between the worker terminal 200 and the position signal beacon 300 It is preferable that the first approach distance and the second approach distance are closer to each other or the first approach distance is closer to the previous calculation and the second approach distance is closer to the first position signal beacon Do. That is, since the first approach distance and the second approach distance are close to each other as shown in FIG. 3A or FIG. 3D, the first position signal beacon 300a, which is the first position signal beacon, (In the case of FIG. 3D). As shown in FIG. 3C, when the first approach distance approaches and the second approach distance increases, the first approach distance d2 gradually approaches and the second approach distance d1 corresponds to It is getting farther away. Therefore, it is calculated in a direction approaching the second position beacon signal 300b which is the first position beacon signal.

However, if the second approach distance is closer than before the approach distance calculation but the first approach distance is distant, the approach direction is calculated toward the second position signal beacon. 3B, the second approach distance d2 is gradually approaching, and the first approach distance d1 is gradually decreasing. Therefore, the worker terminal 200 may transmit the second position signal It is determined to approach the second position signal beacon 300b which is the beacon.

On the other hand, when the first approach distance and the second approach distance are more distant from the first position signal beacon than before the approach distance calculation, the direction is away from the first position signal beacon and away from the second position signal beacon, which corresponds to the case of FIG. 3E . 3E, since the first approach distance d3 and the second approach distance d2 are gradually distanced from the third position signal beacon 300c, which is the first position signal beacon, It is determined to move to the opposite side of the second position signal beacon 300b which is the position signal beacon.

When the movement direction of the worker terminal 200 is grasped in this way, it is determined which position and where the worker terminal 200 is moving by using the above-described determination result of the current position of the worker terminal 200 Lt; / RTI >

Meanwhile, the position determining unit 103 calculates the moving speed of the worker terminal 200 by calculating a variation value per unit time, which is a known speed calculating method. However, since the distance measurement error of the beacon described above must be considered, the value obtained by dividing the value of the first approach distance by the unit time is calculated only when the error is within the predetermined distance, which is the allowable error range of the beacon.

That is, when the first approach distance is within the predetermined distance at the start time of the unit time and / or the end time of the unit time, the value obtained by dividing the value obtained by varying the first approach distance during the unit time by the unit time When the first approach distance exceeds the predetermined distance at the start time of the unit time and at the end time of the unit time, the absolute value of the changed value of the first approach distance during the unit time, The second approach distance is calculated by dividing the absolute value of the changed value by 2 and then dividing the absolute value by the unit time. That is, when the error is out of the error range, the error can be reduced by using the average of the values measured in the two beacons.

While the present invention has been described with reference to the above examples, it is to be understood that the present invention is not limited to those precise embodiments, and various modifications may be made without departing from the scope of the present invention. Therefore, the examples disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10 transmission and distribution equipment
100 control unit
101 Access control unit 102 Position determination unit
103 Safety judging unit 104 BLE receiving unit
105 communication unit 120
130 BLE Receiver 150 Door
200 operator terminal
300 position signal beacon
400 Management Server
500 wireless communication network
600 beacon signaling danger

Claims (3)

An entrance control unit installed in an unmanned power transmission and distribution facility for controlling entrance and exit of an unauthorized person by controlling a locking device for the entrance and exit of the transmission and distribution equipment, a position determination unit for determining the position of a worker terminal carried by the access permitted worker, A BLE reception unit for receiving a terminal identification code transmitted from the worker terminal in a BLE signal outside the doorway, and a BLE reception unit for receiving a signal from the operator terminal and the management server through a wired or wireless communication network, As a transmission and distribution equipment security and safety management control unit
Wherein the access control unit controls the number of terminal identification codes received by the BLE receiving unit and the identification code information previously transmitted from the management server to each of the terminal identification codes when receiving an opening request signal for the entrance from the worker terminal When the identification code information is not present or when at least one of the terminal identification codes or the terminal identification codes is different from the identification code information, Transmits the authentication light signal including the terminal identification code to the management server and controls the locking device to open the door only when an approval approval signal is received from the management server,
When the operator terminal receives each of the position identification codes transmitted by the plurality of position signal beacons spaced apart from each other at predetermined positions in the transmission and distribution facility and transmits the position identification codes together with the received signal strength for the position identification code Calculating an approach distance between the operator terminal and each of the position signal beacons using the transmission signal strength and the received signal strength for each of the position identification codes, calculating a current position, a moving direction, and a moving speed of the operator terminal,
Wherein the safety judgment unit receives the risk identification code transmitted by the risk signal beacon installed in the hazardous area in the power transmission and distribution facility together with the received signal strength for the risk identification code when the worker terminal receives the risk identification code, Calculating an approach distance between the operator terminal and the beacon using the transmitted signal strength and the received signal strength and calculating a moving direction and a moving speed of the operator terminal to determine whether the operator terminal is close to the beacon of the danger signal When the worker terminal located within a predetermined distance from the beacon of the danger signal approaches the beacon of the beacon at a predetermined speed or more toward the beacon of danger, it is determined that the worker is in a dangerous state and generates a danger warning signal, And transmitting the received signal strength to the worker terminal If less than the number of the terminal identification code, generates a safety alert signal is determined by safety rules violation state,
Wherein the communication unit transmits the current position, the movement direction, and the movement speed calculated by the position determination unit to the management server and the worker terminal, so that the communication unit is displayed on the display screen together with the drawing of the transmission / And transmits the risk warning signal or the safety warning signal to the operator terminal and the management server in case of occurrence of the danger warning signal or the safety warning signal to generate a critical alarm or a safety alarm. The method according to claim 1,
Wherein the position determination unit determines the current position by using the first position signal beacon located at the first shortest distance of the approach distance and the second position signal beacon located at the second shortest distance of the approach distance, The first position signal beacon is calculated from the first position signal beacon at a position distant from the first position signal beacon by the first approach distance, and when the first approach distance is a predetermined distance or more, And when the first approach distance and the second approach distance are closer to each other or at the same time than before the approach distance calculation, the first approach distance is equal to or greater than the predetermined distance Regardless of whether the first position signal beacon is a first position signal beacon, Greater transmission and distribution facilities security, characterized in that for calculating the position apart and the safety control unit 3. The method of claim 2,
Wherein the position determining unit determines the moving direction based on whether the first approach distance and the second approach distance are closer to each other than before the approach distance calculation or when the first approach distance is closer and the second approach distance is farther, Beacon and calculates a direction approaching the second position signal beacon when the second approach distance is closer to the beacon than before the calculation of the approach distance but when the first approach distance is distant, When the first approach distance and the second approach distance are simultaneously distant from the first position signal beacon,
Wherein the position determining unit determines the moving speed as a value at which the first approach distance is changed during the unit time when the first approach distance is within the predetermined distance at the start time of the unit time and / When the first approach distance exceeds the predetermined distance at the start time of the unit time and the end time of the unit time, the first approach distance for the unit time is calculated as a value obtained by dividing the first approach distance Wherein the absolute value of the changed value is calculated by adding the absolute value of the changed value of the second approach distance during the unit time, dividing the absolute value by 2, and dividing the absolute value by the unit time again. unit

Images