KR102412115B1 - System and method for managing a safety of woking site - Google Patents

Abstract

Various embodiments of the present invention relate to a workplace safety management system. According to various embodiments of the present disclosure, a work site safety management system includes: a live line detection unit for detecting a live line at a work site; a first sensor unit for detecting the state of the switchboard installed at the work site; a second sensor unit for detecting a leakage current of an electric line installed at the work site; and a control unit that calculates the risk of electric shock Q of the work site according to Equation 1 below based on the sensor data received from the live wire detection unit, the first sensor unit, and the second sensor unit. . Other embodiments may be possible.

Description

SYSTEM AND METHOD FOR MANAGING A SAFETY OF WOKING SITE

The present invention relates to a work site safety management system and method, and more particularly, to a system and method capable of calculating the degree of risk for various accidents that may occur at the work site based on various types of sensor data detected at the work site. it's about

In general, a large number of workers are deployed in various fields to perform work at work sites such as construction, and safety accidents occur very frequently, so safety management for workers is very important.

However, since there are very few managers who manage many workers, there is a limit to the manager's ability to accurately grasp all work situations occurring at the work site and prevent safety accidents in advance.

In particular, since the occurrence rate or risk of safety accidents increases at large construction sites where heavy equipment is used a lot and chemicals are located, a system capable of efficient safety management is more needed.

For example, as factors that can cause electric shock are scattered throughout the workplace, electric shock accidents account for the largest proportion of industrial accidents. In particular, live wires, leakage currents, or abnormal status of switchboards occurring at work sites are the main causes of electric shock accidents. In addition, various types of safety accidents such as suffocation and explosion due to leakage of toxic gas may occur at work sites in addition to electric shock accidents. However, in the past, there was a problem in that it was not possible to prevent safety accidents by detecting only a few specific safety accidents and only rectifying the accidents that have already occurred, by comprehensively managing various types of safety accidents and informing workers in advance of risks.

KR 10-1866677

The present invention has been devised to solve the above problems, and by fusing sensor data collected from various locations on the job site to calculate various risks that may occur at the job site, a system that can warn workers of danger in advance; and The purpose is to provide a method.

According to various embodiments of the present disclosure, a work site safety management system includes: a live line detection unit for detecting a live line at a work site; a first sensor unit for detecting the state of the switchboard installed at the work site; a second sensor unit for detecting a leakage current of an electric line installed at the work site; and a control unit that calculates the risk of electric shock Q of the work site according to Equation 1 below based on the sensor data received from the live wire detection unit, the first sensor unit, and the second sensor unit. .

According to the present invention as described above, it has various effects as follows.

According to the present invention as described above, it has various effects as follows.

According to the present invention, by fusion of sensor data collected from various locations of the work site, it is possible to calculate the degree of risk associated with the work site and inform the operator in advance.

In addition, according to the present invention, by providing a degree of risk, electric shock accidents can be prevented and industrial safety and work safety can be improved.

1 is a block diagram illustrating a workplace safety management system according to an embodiment of the present invention.
2 is a flowchart illustrating a method for safety management at a work site according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. And, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of the functions of the present invention, which may vary according to the intention or custom of the user or operator. Therefore, the definition should be made based on the content throughout this specification.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings as follows. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only this embodiment allows the disclosure of the present invention to be complete and the scope of the invention to those of ordinary skill in the art completely It is provided to inform you.

Various embodiments of the present document may be implemented as software (eg, a program) including instructions stored in a machine-readable storage medium (eg, a computer). The device is a device capable of calling a stored command from a storage medium and operating according to the called command, and may include an electronic device (eg, a server) according to the disclosed embodiments. Instructions may include code generated or executed by a compiler or interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium does not include a signal and is tangible, and does not distinguish that data is semi-permanently or temporarily stored in the storage medium.

According to an example, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product may be distributed in the form of a machine-readable storage medium (eg, compact disc read only memory (CD-ROM)) or online through an application store (eg, Play Store™). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

Each of the components (eg, a module or a program) according to various embodiments may be composed of a singular or a plurality of entities, and some sub-components of the aforementioned sub-components may be omitted, or other sub-components may be It may be further included in various embodiments. Alternatively or additionally, some components (eg, a module or a program) may be integrated into a single entity to perform the same or similar functions performed by each corresponding component prior to integration. According to various embodiments, operations performed by a module, program, or other component are sequentially, parallel, repetitively or heuristically executed, or at least some operations are executed in a different order, are omitted, or other operations are added. can be

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components.

The switchboard used in this specification is a concept including a high voltage switchboard, a low voltage switchboard, a distribution board, a motor control board, and the like.

1 is a block diagram illustrating a workplace safety management system according to an embodiment of the present invention.

Referring to FIG. 1 , a work site safety management system 10 according to an embodiment of the present invention may be communicatively connected to an electronic device 30 used by a worker working at a work site or used by a manager through a network. Through this, the work site safety management system 10 may notify the operator and the manager of the degree of risk of various accidents that may occur at the work site. Networks may include wireless networks and wired networks. For example, the network may be a short-range communication network (eg, Bluetooth, WiFi direct, or infrared data association (IrDA)) or a telecommunications network (eg, a cellular network, the Internet, or a computer network (eg, LAN or WAN)). have.

In an embodiment, the work site safety management system 10 may calculate the degree of risk for various safety accidents that may occur at the work site, and for this purpose, the control unit 100, the live wire detection unit 200, and the first sensor It may include a unit 300 , a second sensor unit 400 , a third sensor unit 500 , a fourth sensor unit 600 , and a fifth sensor unit 700 . For example, the workplace safety management system 10 calculates the risk of electric shock, the risk of suffocation, the risk of explosion, and other risks, and through this, it is possible to provide workers and managers with the possibility of occurrence of individual types of risks occurring in the workplace. In addition, the workplace safety management system 10 calculates the workplace risk by synthesizing the risk of electric shock, the risk of suffocation, the risk of explosion and other risks, and through this, the risk of the workplace can be comprehensively provided to workers and managers. This level of risk at the work site can increase the effectiveness of the overall safety management of the work site.

In an embodiment, the control unit 100 may be disposed at the work site to control overall operations of each component capable of detecting various situations. To this end, the controller 100 may perform data communication through each of the components and an internal network. Here, the internal network may be a CAN communication method or an RS485 communication method in which the multi-master function is supported.

In an embodiment, the control unit 100 may be communicatively connected to the electronic device 30 using an external network through a communication unit (not shown). Here, the external network uses any one of Ethernet communication method, CDMA communication method, RS485 communication method, WiFi communication method, Bluetooth communication method, PLC (Power Line Communication) communication method, Zigbee communication method, or a plurality of communication methods. can In addition, for this purpose, the communication unit may transmit and receive data between each other by performing wired or wireless communication using the above communication methods.

In one embodiment, the control unit 100 via a network through the live wire detection unit 200, the first sensor unit 300, the second sensor unit 400, the third sensor unit 500, the fourth sensor unit 600 ) and the fifth sensor unit 700 , and may receive sensor data obtained in each configuration. For example, the control unit 100 may continuously receive sensor data streams from various sensor units and the live wire detection unit 200 . Here, the sensor data stream may be a data set according to the passage of time of sensor data received from a plurality of sensors included in the sensor unit. For example, the sensor data stream may include live wires at the job site, items related to the status of the switchboard 20, gas causing suffocation, explosion hazard factors, illuminance, odor, temperature, leakage current of the power line, etc. And it is not limited thereto, and may further include sensor data related to various situations.

In one embodiment, the control unit 100 may store the sensor data stream sensed in real time by each sensor unit and the live wire detection unit 200 in a storage unit (not shown). For example, the sensor data stream may be stored for each time period. Accordingly, various conditions of the work site can be checked for each time period.

In one embodiment, the control unit 100 may calculate various risk levels related to the work site by analyzing the collected sensor data, and may provide this to the operator and the manager. A detailed operation related thereto will be described later with reference to FIG. 2 .

In an embodiment, the controller 100 may transmit the calculated risk levels to the electronic device 30 used by the operator or manager. Also, the controller 100 may transmit all sensor data streams as raw data to the electronic device 30 used by the manager for data backup.

In one embodiment, the electronic device 30 is, for example, an integrated management server (server), a smartphone (smartphone), a tablet PC (tablet personal computer), a mobile phone (mobile phone), a video phone, an e-book reader ( e-book reader), desktop PC (desktop PC), laptop PC (laptop PC), netbook computer, workstation, PDA (personal digital assistant), PMP (portable multimedia player), MP3 player, It may include at least one of a mobile medical device, a camera, and a wearable device.

Meanwhile, although not shown in the drawings, the work environment safety management system 10 may further include a display unit, and the control unit 100 may display a screen for monitoring a situation related to a risk level of the work environment through the display unit.

In an embodiment, the live wire detection unit 200 may detect a live wire at a work site. For example, the live wire detection unit 200 detects a line or equipment to which a voltage is applied and an electric field generated in the vicinity, and may transmit the sensed electric field signal to the controller 100 .

In an embodiment, the live wire detection unit 200 may be attached to the body of a worker at a work site. That is, the live wire detection unit 200 may be configured as a wearable type, and may include a sensor capable of detecting an electric field. Accordingly, the plurality of live wire detection units 200 may detect whether a live wire is present in the moving radius of the plurality of workers.

In an embodiment, the switchboard 20 installed at the work site may supply electric power supplied from the outside to the electrical equipment installed at the work site through a power line (eg, a cable, a bus bar, etc.). Here, the electric equipment may mean a load equipment receiving power or a consumer. To this end, the switchboard 20 may include a switchgear, a transformer, and a power distribution unit. For example, the switchboard 20 may receive high-voltage power through a switchgear, may step-down the voltage to a low voltage through a transformer, and may supply power to each consumer through the distribution unit.

In an embodiment, the first sensor unit 300 may be disposed on the switchboard 20 to monitor the internal condition of the switchboard 20 and the condition of electrical equipment connected to the switchboard 20 .

In an embodiment, the first sensor unit 300 may detect the state of the switchboard 20 installed at the work site, and for this purpose, the current sensor 310, the smoke sensor 320, the arc sensor 330, and the temperature A sensor 340 may be included.

In one embodiment, the current sensor 310 is composed of a zero current transformer and its peripheral circuit, detects the leakage current of the power flowing in the power line inside the switchboard 20 and transmits it to the control unit 100 have. In addition, the current sensor 310 is composed of a shunt resistor and its peripheral circuit, detects the operating current of the power applied from the input terminal of the power terminal to the output terminal through the power line, and transmits the checked abnormal current to the control unit 100. have.

In an embodiment, the smoke sensor 320 may detect smoke generated inside the switchboard 20 . The smoke sensor may be utilized for the purpose of monitoring the switchboard 20 fire. For example, when smoke is detected through the smoke sensor 320 , the control unit 100 may determine that a fire has occurred in the switchboard 20 and determine that a dangerous situation has occurred.

In one embodiment, the arc sensor 330 may perform arc detection. As the power equipment inside the switchboard 20 deteriorates in insulation, the initial minute partial discharge signal may develop into an arc. Accordingly, this arc signal can be detected as an optical signal by the arc sensor. For example, the arc sensor may be a light receiving sensor. The arc can be generated tens of times or more per second, and the arc sensor 330 can be configured to detect the number of occurrences of the arc and the location of the arc.

이상인 경우에는 제어부(100)는 배전반(20)에 화재가 발생한 것으로 판단할 수 있다. 이러한 온도는 주로 고온에 의해 이상 현상이 유발되는데, 과전류나 과전압 등에 의해 고온 현상이 발생할 수 있다.In an embodiment, the temperature sensor 340 may detect the temperature of the switchboard 20 and transmit the detected temperature to the controller 100 . The temperature sensor 340 may be installed in the switchboard 20 . For example, the temperature measured through the temperature sensor 340 is about 70

In this case, the controller 100 may determine that a fire has occurred in the switchboard 20 . An abnormal phenomenon is mainly caused by a high temperature at such a temperature, and the high temperature phenomenon may occur due to an overcurrent or an overvoltage.

In an embodiment, the second sensor unit 400 may detect a leakage current of an electric line installed at a work site. For example, leakage current can be largely divided into capacitive leakage current and resistive leakage current, and most of the disasters caused by leakage current are caused by resistive leakage current. The second sensor unit 400 may use an Igr method, a phase difference measurement method, or a leakage current measuring device to measure a resistive leakage current generated at a work site.

In an embodiment, the third sensor unit 500 detects gas at the work site, and for this purpose, it may include a hydrogen sulfide sensor 510 , a carbon monoxide sensor 520 , and an oxygen sensor 530 .

In one embodiment, the hydrogen sulfide sensor 510 is a gas detection sensor and may serve to detect the concentration of hydrogen sulfide. The gas detection sensor can be divided into a method using silicon oxide and a semiconductor type gas sensor. For example, when power is applied in the silicon oxide method, the sensor temperature rapidly increases and the resistance of the semiconductor sensor rapidly decreases. As the temperature rises, oxygen gas is adsorbed, and the resulting free electrons in the conduction band are captured by the oxygen gas, increasing the resistance of the sensor. This makes it possible to measure the concentration of oxygen or another gas (hydrogen sulfide).

In an embodiment, the carbon monoxide sensor 520 may be used for monitoring a fire in the switchboard 20 , accurately determine a fire situation, and confirm whether or not the fire is extinguished in a closed state. For example, the carbon monoxide sensor may measure a change in carbon monoxide generated during carbonization of a power line (eg, a cable) inside the switchboard 20 . In the power line, carbonization occurs before ignition due to deterioration and partial discharge, and in order to measure the concentration of carbon monoxide generated at this time to alert the state of carbonization, the carbon monoxide sensor 520 uses a measurement technology of 0 to 800 PPM band. It is preferable to analyze whether or not carbonization is used.

In one embodiment, the oxygen sensor 530 is a gas sensor and may serve to detect the concentration of oxygen. The gas detection sensor can be divided into a method using silicon oxide and a semiconductor type gas sensor. For example, when power is applied in the silicon oxide method, the sensor temperature rapidly increases and the resistance of the semiconductor sensor rapidly decreases. As the temperature rises, oxygen gas is adsorbed, and the resulting free electrons in the conduction band are captured by the oxygen gas, increasing the resistance of the sensor. Thanks to this, the concentration of oxygen can be measured.

In an embodiment, the fourth sensor unit 600 may detect an explosion hazard at a work site, and may include a flammable gas sensor 610 and a flame sensor 620 for this purpose.

In an embodiment, the flammable gas sensor 610 may detect a flammable gas at a work site. Here, flammable gas is a substance with a lower explosive limit concentration of 13% or less, or a difference of 12% or more between the lower limit and upper limit of the explosive limit concentration, which is a gaseous substance at a pressure of 20°C at 1 atmosphere. Hydrogen, acetylene, methane, butane, propane, city gas , LPG and ammonia.

In an embodiment, the flame sensor 620 may detect a flame generated at a work site. For example, when a flame is detected through the flame sensor 620 , the controller 100 may determine that a fire has occurred at the work site as a dangerous situation.

In an embodiment, the fifth sensor unit 700 may detect illuminance, temperature, or smell at a work site, and may include an illuminance sensor 710 , an odor sensor 720 , and a temperature sensor 730 for this purpose. .

In one embodiment, the illuminance sensor 710 may detect the illuminance of the workplace. For example, the illuminance sensor 710 may be a CDS sensor. The CDS sensor is an illuminance sensor that has a property of decreasing resistance when the surroundings are bright and increasing resistance when it is dark.

In an embodiment, the odor sensor 720 may detect a surrounding volatile organic compound. For example, the smell sensor 720 may be a VOCs sensor. When the volatile organic compound is detected through the smell sensor 720 , the control unit 100 may determine that a dangerous situation has occurred at the work site. This is to prevent an accident by preventing a welding operation or an operation using a fire, etc. from proceeding in the vicinity of the area where the volatile organic compound is detected. In addition, when the amount of the volatile organic compound is measured through the odor sensor 720 to measure more than a level harmful to the human body, the controller 100 may determine that a dangerous situation has occurred.

이상인 경우에는 제어부(100)는 작업 현장에 화재가 발생한 것으로 판단할 수 있다.In an embodiment, the temperature sensor 730 may detect the temperature of the work site and transmit the detected temperature to the control unit 100 . The temperature sensor 730 may be installed at various locations on the job site. For example, the temperature measured through the temperature sensor 730 is about 70

In this case, the control unit 100 may determine that a fire has occurred at the work site.

2 is a flowchart illustrating a method for safety management at a work site according to an embodiment of the present invention. The operations of FIG. 2 may be performed by the controller 100 of FIG. 1 . Meanwhile, the operations of FIG. 2 are not limited to the order illustrated in FIG. 2 , and operations 21 to 23, operations 24 to 26, and operation 27 may be individually performed. Also, the sensor data receiving operations 21 and 24 may be performed separately.

Referring to FIG. 2 , in an embodiment, the control unit 100 may receive sensor data from the live wire detection unit 200 , the first sensor unit 300 , and the second sensor unit 400 in operation 21 . . For example, the sensor data includes a resistive leakage current (I _rl ), a line current (I _lc ), a line current (I _lc ) of the switchboard 20, the temperature of the switchboard 20, whether the smoke sensor 320 operates, It may include whether the arc sensor 330 operates and the leakage current of the electric line.

In an embodiment, in operation 22, the control unit 100 determines a live wire risk (U), a wire current risk (E ₁ ), and a temperature risk (E ₂ ) according to at least one of sensor data, Equation 2 below, and preset criteria. ) and the risk of leakage current (E ₃ ) can be calculated.

[Equation 2]

Here, I _rl is the resistive leakage current, I _lc is the line current, I _high is the allowable current, T _high is the maximum reference temperature, T _now is the current temperature of the switchboard, and T _low is the minimum reference temperature.

For example, the live wire risk (U) is U=1 when both the resistive leakage current and the line current are 0, and U=0 when the resistive leakage current or the line current is sensed in the live wire state. That is, the score of the live wire risk (U) is 1 in the normal state in which no live wire is detected, and 0 in the detected dangerous state.

For example, the line current risk (E ₁ ) is E ₁ =0 when the line current exceeds the allowable current, and E when the line current (I _lc ) is between 0 and the allowable current (I _high ) in the above equation ₁ = 1 That is, the score of the line current risk (E ₁ ) is 1 in the normal state and 0 in the dangerous state.

For example, the temperature hazard (E ₂ ) is when the temperature (T _now ) exceeds the threshold, E ₂ =0, and is within the normal range (between the lowest reference temperature (T _low ) and the maximum reference temperature (T _high )). E ₂ =1. That is, the score of the temperature hazard (E ₂ ) is 1 in the steady state and 0 in the critical state.

For example, the risk of leakage current (E ₃ ) is E ₃ =0 when leakage current exceeds the standard value, and E ₁ =1 when within the normal range (0≤I _rl ≤1[mA[]]. That is, leakage current The score of risk (E ₃ ) is 1 in the steady state and 0 in the risk state.

For example, the smoke risk (S _smk ) is S _smk = 0 when the smoke sensor 320 is activated, and S _smk = 1 when the smoke sensor 320 is not activated. That is, the score of the smoke risk (S _smk ) is 1 in the normal state and 0 in the dangerous state.

For example, the arc hazard (S _ark ) is S _ark = 0 when the arc sensor 330 operates, and S _ark = 1 when the arc sensor 330 does not operate normally. That is, the score of the arc hazard (S _ark ) is 1 in the normal state and 0 in the critical state.

In one embodiment, the control unit 100, in operation 23, based on the sensor data received from the live wire detection unit 200, the first sensor unit 300, and the second sensor unit 400, the risk of electric shock ( Q) can be calculated according to Equation 1 below.

[Equation 1]

Here, S _sa is the fire risk, S _smk is the smoke risk, S _ark is the arc risk, U is the live wire risk, E ₁ is the line current risk, E ₂ is the temperature risk, and E ₃ is the leakage current risk.

For example, the fire risk (S _sa ) may have a score multiplied by the smoke risk (S _smk ) and the arc risk (S _ark ), and only when both the smoke risk (S _smk ) and the arc risk (S _ark ) are in a dangerous state. The score of the fire hazard (S _sa ) is 1 and 0 otherwise.

For example, when the risk of electric shock Q is calculated according to Equation 1 according to each situation, it may have a score of 0 to 4 according to various cases as shown in Table 1 below. If the score of the risk of electric shock (Q) is 4, it is a normal state, not a dangerous state, and as the score goes to 0, it is a dangerous state. For example, if the electric shock risk (Q) score is 3, it may be a caution level, if it is 2, it may be a warning level, if it is 1, it may be a danger level, and if 0, it may be an evacuation level. On the other hand, in the table, X is a case in which the corresponding item does not exist, and O is a case in which the corresponding item exists.

Case1 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q X normal normal normal X X One 3 0 4 U=1 E1=1 E3=1 E2=1 S=1 S=1 Case2 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O normal normal normal X X 0 3 0 3 U=0 E1=1 E3=1 E2=1 S=1 S=1 Case3 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O abnormal normal normal X X 0 2 0 2 U=0 E1=0 E3=1 E2=1 S=1 S=1 Case4 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O normal abnormal normal X X 0 2 0 2 U=0 E1=1 E3=0 E2=1 S=1 S=1 Case5 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O normal normal abnormal X X 0 2 0 2 U=0 E1=1 E3=1 E2=0 S=1 S=1 Case6 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O abnormal abnormal normal X X 0 One 0 One U=0 E1=0 E3=0 E2=1 S=1 S=1 Case7 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O abnormal normal abnormal X X 0 One 0 One U=0 E1=0 E3=1 E2=0 S=1 S=1 Case8 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O normal abnormal abnormal X X 0 One 0 One U=0 E1=1 E3=0 E2=0 S=1 S=1 Case9 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O abnormal abnormal abnormal X X 0 0 0 0 U=0 E1=0 E3=0 E2=0 S=1 S=1 Case10 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O - O X 0 0 One One U=0 S=1 S=1 Case 11 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O - X O 0 0 One One U=0 S=1 S=0 Case 12 live wire
situation line current leak
electric current temperature performance
sensor arc
sensor U E1, E2, E3 total Ssa Q O - O O 0 0 1+1 0 U=0 S=0 S=0

In an embodiment, the controller 100 may transmit an alarm corresponding to the risk of electric shock Q to the live wire detector 200 or the electronic device 30 used by the operator. For example, the notification may include one or more of visual information, tactile information, and auditory information. The generation of the notification may be generated through a lamp, a motor, and a speaker (not shown) that may be provided in the work site, the switchboard 20 or the live wire detection unit 200, and may cause the lamp to flicker or vibration by the motor. or by generating a warning sound by a speaker, it is possible to recognize that a dangerous situation has occurred to an operator or the like. Also, the control unit 100 may transmit a warning message to the electronic device 30 possessed by the operator or manager to recognize that a dangerous situation has occurred.

For example, caution, warning, danger, and evacuation, which are grades of the risk of electric shock (Q), may be distinguished through a difference in the size of a warning sound generated through a speaker or may be distinguished through adjustment of an interval at which a warning sound is generated. For example, in the case of caution, the interval at which a warning sound is generated is narrow compared to the danger, or in the case of caution, the intensity of the warning sound is made smaller than the danger, so that each stage of caution, warning, and danger can be distinguished. . Also, for example, caution, warning, danger, and evacuation, which are grades of the risk of electric shock (Q), may be displayed in green, blue, yellow, and red respectively through LEDs.

As described above, the workplace safety management system 10 of the present invention calculates the risk of electric shock (Q) by fusion of various sensor data according to a preset standard or equation, and informs workers and workers of safety accidents at the workplace. can be prevented

In an embodiment, the controller 100 may receive sensor data from the third sensor unit 500 , the fourth sensor unit 600 , and the fifth sensor unit 700 in operation 24 . For example, sensor data may include hydrogen sulfide concentration (D _s ), carbon monoxide concentration (D _co ), oxygen concentration (D _o ), flammable gas concentration (D _f ), and VOC concentration (D _v ) at any one location on the job site. , illuminance (L _now ) and temperature (T _now ) may include.

In one embodiment, the control unit 100 in operation 25, the risk of hydrogen sulfide (Es), the risk of carbon monoxide (E _co ), the risk of oxygen deficiency (E _o ) according to at least one of sensor data, Equation 4 and preset criteria. ), flammable gas risk (E _f ), flame risk (E _p ), odor risk (E _v ), illuminance risk (E _L ), and temperature risk (E _t ) can be calculated. Meanwhile, each of the reference values described below may be a boundary value at which a corresponding item, for example, hydrogen sulfide, can actually affect humans.

[Equation 4]

where D _s is the hydrogen sulfide concentration, D _ref1 is the first reference value, D _co is the carbon monoxide concentration, D _ref2 is the second reference value, D _o is the oxygen concentration, D _ref3 is the third reference value, D _f is the flammable gas concentration, D _ref4 is the fourth reference value, D _v is the VOC concentration, D _ref5 is the fifth reference value, L _now is the illuminance, L _low is the lowest illuminance value, L _high is the maximum illuminance value, T _now is the temperature, T _low is the lowest temperature and T _high is the maximum temperature.

For example, according to Equation 4, the hydrogen sulfide risk (E _s ) is 1 in a steady _state , and E _s is 0 when the hydrogen sulfide concentration (D _s ) exceeds the first reference value (D _ref1 ). That is, the score of the hydrogen sulfide hazard (E _s ) is 1 in the steady state and 0 in the critical state.

For example, according to Equation 4, the carbon monoxide risk (E _co ) is 1 in a steady state, and E _co is 0 _when the carbon monoxide concentration (D _co ) exceeds the second reference value (D _ref2 ). That is, the score of the carbon monoxide risk (E _co ) is 1 in the normal state and 0 in the dangerous state.

For example, according to Equation 4, the risk of oxygen deprivation (E _o ) is 1 in a steady state, and E _o is ₀ when the oxygen concentration (D _o ) exceeds the third reference value (D _ref3 ). That is, the score of the risk of oxygen starvation (E _o ) is 1 in the normal state and 0 in the critical state.

For example, according to Equation 4, the flammable gas hazard (E _f ) is 1 in a steady state, and E _f is 0 when the flammable gas concentration (D _f ) exceeds the fourth reference value (D _{ref4 )} . . That is, the score of the flammable gas hazard (E _f ) is 1 in the normal state and 0 in the dangerous state.

For example, according to Equation 4, the flame risk (E _p ) is _{equal to 1 in a normal state, and E p =} 0 when a flame is detected. That is, the score of the flame hazard (E _p ) is 1 in the steady state and 0 in the critical state.

For example, according to Equation 4, the odor risk E _v is 1 in a normal state, and E _v is 0 when the VOC concentration D _v exceeds the fifth reference _value D _ref5 . That is, the score of the odor risk (E _v ) is 1 in the normal state and 0 in the dangerous state.

For example, according to Equation 4, the illuminance risk E _L is 1 in a normal state, and E _L is 0 when the illuminance _{L now} is out of the reference range. That is, the score of the illuminance risk (E _L ) is 1 in the normal state and 0 in the dangerous state.

For example, according to Equation 4, E _t is 1 in the temperature risk (E _t ) in a steady state, and E _t is 0 when the temperature (T _now ) is out of the reference range. That is, the score of the temperature hazard (E _t ) is 1 in the steady state and 0 in the critical state.

In one embodiment, the control unit 100, in operation 26, based on the sensor data received from the third sensor unit 500, the fourth sensor unit 600, and the fifth sensor unit 700, the risk of suffocation at the job site (Q ₁ ), the risk of explosion (Q ₂ ) and other risks (Q ₃ ) may be calculated according to Equation 3 below. for example,

[Equation 3]

where E _s is the hydrogen sulfide hazard, E _co is the carbon monoxide hazard, E _o is the oxygen deficiency hazard, E _f is the flammable gas hazard, E _p is the flame hazard, E _v is the odor hazard, E _L is the illuminance hazard, E _t is the temperature is the risk

For example, the risk of asphyxiation (Q1) may be Q1=3 if any of the factors hydrogen sulfide, carbon monoxide, or oxygen starvation occur. That is, hydrogen sulfide, carbon monoxide or oxygen deficiency can directly inflict fatal harm to the operator, so when any one occurs, the control unit 100 may provide a notification according to the evacuation grade, which is the highest grade among the electric shock risk (Q) grades.

For example, the explosion hazard (Q2) is Q2=3 when any of the flammable gas or flame factors occur, and can be 4 or 5 depending on the illuminance and temperature. In addition, since an explosion by flammable gas or flame may lead to a large-scale fatal accident, the control unit 100 may provide a notification according to the evacuation grade, which is the highest grade among the electric shock risk (Q) grades when any one occurs.

For example, the other risk (Q3) may have a value of 0 to 3 depending on the illuminance, temperature, or smell. Illuminance, temperature and odors are likely to pose a danger to the operator's body, so warnings can also be issued by three Yongin. For example, the control unit 100 may provide a notification based on the caution, warning, danger, and evacuation level of the electric shock risk (Q).

In this way, the workplace safety management system 10 of the present invention fuses various sensor data according to preset standards or equations to calculate the suffocation risk (Q1), the explosion risk (Q2) and other risks (Q3), and the operator It is possible to prevent safety accidents at the workplace by notifying the workers and the workers.

In an embodiment, in operation 27, the control unit 100 may calculate the workplace risk (R) according to Equation 5 below.

[Equation 5]

Here, Q is the risk of electric shock, Q1 is the risk of suffocation, Q2 is the risk of explosion, and Q3 is the other risk.

That is, the control unit 100 may calculate a grade by synthesizing the risk of electric shock (Q), the risk of suffocation (Q1), the risk of explosion (Q2) and other risks (Q3), and may provide this to the operator and the manager. In other words, the risk of electric shock (Q) is the lower the number, the more dangerous, and the risk of suffocation (Q1), explosion hazard (Q2), and other hazard (Q3) are higher as the number is higher. can be high, and can provide notifications accordingly. For example, if the risk of electric shock (Q) is the highest grade of 0.1 (the denominator, so the score is changed from 0 to 0.1), the risk of suffocation (Q1) is 3, and the risk of explosion (Q2) is 3, the workplace risk (R) is 60, and it can be judged that the work site is dangerous enough to have to be closed.

As described above, the work site safety management system 10 of the present invention can calculate the risk by fusing sensor data obtained using various sensors disposed at various locations of the work site, the switchboard 20, the electric line, etc., and the operator It is possible to prevent safety accidents at the work site in advance by providing the level of risk as a notification to and to the manager.

According to various embodiments of the present disclosure, a work site safety management system includes: a live line detection unit for detecting a live line at a work site; a first sensor unit for detecting the state of the switchboard installed at the work site; a second sensor unit for detecting a leakage current of an electric line installed at the work site; and a control unit that calculates the risk of electric shock Q of the work site according to Equation 1 below based on the sensor data received from the live wire detection unit, the first sensor unit, and the second sensor unit. .

According to various embodiments, the first sensor unit may include a current sensor, a smoke sensor, an arc sensor, and a temperature sensor.

According to various embodiments, the control unit may include the live wire risk (U), the wire current risk (E1), the temperature risk (E2) and the The leakage current risk (E3) can be calculated.

According to various embodiments, the live wire detector may be attached to the body of a worker at the work site, and the control unit may transmit an alarm corresponding to the risk of electric shock Q to the live wire detector or an electronic device used by the worker. have.

According to various embodiments of the present disclosure, a work site safety management system includes a third sensor unit for detecting gas at the work site; a fourth sensor unit for detecting the risk of explosion at the work site; a fifth sensor unit for detecting illuminance, temperature, or smell at the work site; And based on the sensor data received from the third sensor unit, the fourth sensor unit, and the fifth sensor unit, the suffocation risk (Q1), the explosion risk (Q2) and other risks (Q3) of the work site are calculated by the following math a control unit that calculates according to Equation 3; including

According to various embodiments, the third sensor unit includes a hydrogen sulfide sensor, a carbon monoxide sensor, and an oxygen sensor, the fourth sensor unit includes a flammable gas sensor and a flame sensor, and the fifth sensor unit includes an illuminance sensor, an odor sensor, and a temperature It may include a sensor.

According to various embodiments, the control unit is the hydrogen sulfide risk (Es), the carbon monoxide risk (Eco), the oxygen deficiency risk (Eo), the risk of flammable gas according to at least one of the sensor data, Equation 4 and preset criteria (Ef), flame risk (Ep), odor risk (Ev), illuminance risk (EL), and temperature risk (Et) can be calculated.

According to various embodiments, the control unit may transmit an alarm corresponding to the suffocation risk (Q1), the explosion risk (Q2), and the other risk (Q3) of the work site to the electronic device used by the worker at the work site.

According to various embodiments of the present disclosure, a work site safety management system includes: a live line detection unit for detecting a live line at a work site; a first sensor unit for detecting the state of the switchboard installed at the work site; a second sensor unit for detecting a leakage current of an electric line installed at the work site; a third sensor unit for detecting gas at the work site; a fourth sensor unit for detecting the risk of explosion at the work site; a fifth sensor unit for detecting illuminance, temperature, or smell at the work site; and performing a workplace risk (R) based on sensor data received from the live wire detection unit, the first sensor unit, the second sensor unit, the third sensor unit, the fourth sensor unit, and the fifth sensor unit. It may include; a control unit that calculates according to Equation (5).

According to various embodiments, the control unit calculates the risk of electric shock (Q), risk of suffocation (Q1), risk of explosion (Q2) and other risks (Q3) according to the sensor data, Equation 1 and Equation 3 below. can

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims described below, but also all modifications equivalently or equivalent to the claims described below are said to be within the scope of the spirit of the present invention. will be.

10: Work site safety management system
20: switchboard 30: electronic device
100: control unit 200: live wire detection unit
300: first sensor unit 400: second sensor unit
500: third sensor unit 600: fourth sensor unit
700: fifth sensor unit

Claims (10)

A live wire detection unit for detecting a live wire at the job site;
a first sensor unit for detecting the state of the switchboard installed at the work site;
a second sensor unit for detecting a leakage current of an electric line installed at the work site; and
and a control unit for calculating the risk of electric shock (Q) of the work site according to Equation 1 below based on the sensor data received from the live wire detection unit, the first sensor unit, and the second sensor unit Worksite safety management system.
[Equation 1]

Here, S _sa is the fire risk, S _smk is the smoke risk, S _ark is the arc risk, U is the live wire risk, E ₁ is the line current risk, E ₂ is the temperature risk, and E ₃ is the leakage current risk.
According to claim 1, wherein the first sensor unit workplace safety management system, characterized in that it comprises a current sensor, a smoke sensor, an arc sensor and a temperature sensor.
According to claim 1, wherein the control unit is the live wire risk (U), the wire current risk (E ₁ ), the temperature risk (E ₂ ) according to at least one of the sensor data, the following Equation 2 and preset criteria And the leakage current risk (E ₃ ) Work site safety management system, characterized in that for calculating.
[Equation 2]

Here, I _rl is the resistive leakage current, I _lc is the line current, I _high is the allowable current, T _high is the maximum reference temperature, T _now is the current temperature of the switchboard, and T _low is the minimum reference temperature.
The method of claim 1, wherein the live wire detection unit is attached to the body of an operator at the work site, and the control unit transmits an alarm corresponding to the risk of electric shock Q to the live wire detection unit or an electronic device used by the operator. Work site safety management system, characterized in that.
a third sensor unit for detecting gas at the work site;
a fourth sensor unit for detecting the risk of explosion at the work site;
a fifth sensor unit for detecting illuminance, temperature, or smell at the work site; and
Based on the sensor data received from the third sensor unit, the fourth sensor unit, and the fifth sensor unit, the suffocation risk (Q ₁ ), the explosion risk (Q ₂ ), and other risks (Q ₃ ) of the work site Work site safety management system, characterized in that it comprises a control unit that is calculated according to the following Equation (3).
[Equation 3]

where E _s is the hydrogen sulfide hazard, E _co is the carbon monoxide hazard, E _o is the oxygen deficiency hazard, E _f is the flammable gas hazard, E _p is the flame hazard, E _v is the odor hazard, E _L is the illuminance hazard, E _t is the temperature is the risk
The method of claim 5, wherein the third sensor unit comprises a hydrogen sulfide sensor, a carbon monoxide sensor and an oxygen sensor,
The fourth sensor unit includes a flammable gas sensor and a flame sensor,
The fifth sensor unit workplace safety management system, characterized in that it comprises an illuminance sensor, an odor sensor and a temperature sensor.
According to claim 5, wherein the control unit is the risk of hydrogen sulfide (E _s ), the risk of carbon monoxide (E _co ), the risk of oxygen deficiency (E _o ), A workplace safety management system, characterized in that the flammable gas risk (E _f ), flame risk (E _p ), odor risk (E _v ), illuminance risk (E _L ), and temperature risk (E _t ) are calculated.
[Equation 4]

where D _s is the hydrogen sulfide concentration, D _ref1 is the first reference value, D _co is the carbon monoxide concentration, D _ref2 is the second reference value, D _o is the oxygen concentration, D _ref3 is the third reference value, D _f is the flammable gas concentration, D _ref4 is the fourth reference value, D _v is the VOC concentration, D _ref5 is the fifth reference value, L _now is the illuminance, L _low is the lowest illuminance value, L _high is the maximum illuminance value, T _now is the temperature, T _low is the lowest temperature and T _high is the maximum temperature.
The method of claim 5, wherein the control unit transmits an alarm corresponding to the suffocation risk (Q ₁ ), the explosion risk (Q ₂ ), and other risks (Q ₃ ) of the job site to the electronic device used by the worker at the job site Work site safety management system, characterized in that.
A live wire detection unit for detecting a live wire at the job site;
a first sensor unit for detecting the state of the switchboard installed at the work site;
a second sensor unit for detecting a leakage current of an electric line installed at the work site;
a third sensor unit for detecting gas at the work site;
a fourth sensor unit for detecting the risk of explosion at the work site;
a fifth sensor unit for detecting illuminance, temperature, or smell at the work site; and
Based on the sensor data received from the live wire detection unit, the first sensor unit, the second sensor unit, the third sensor unit, the fourth sensor unit, and the fifth sensor unit, the following mathematics Work site safety management system, characterized in that it comprises a control unit calculated according to Equation 5.
[Equation 5]

Here, Q is the risk of electric shock, Q ₁ is the risk of suffocation, Q ₂ is the risk of explosion, and Q ₃ is the risk of other risks.
The method of claim 9, wherein the control unit is an electric shock risk (Q), suffocation risk (Q ₁ ), explosion risk (Q ₂ ) and other risks (Q ₃ ) according to the sensor data, Equation 1 and Equation 3 below. Work site safety management system, characterized in that for calculating the.
[Equation 1]

Here, S _sa is the fire risk, S _smk is the smoke risk, S _ark is the arc risk, U is the live wire risk, E ₁ is the line current risk, E ₂ is the temperature risk, and E ₃ is the leakage current risk.
[Equation 3]

where E _s is the hydrogen sulfide hazard, E _co is the carbon monoxide hazard, E _o is the oxygen deficiency hazard, E _f is the flammable gas hazard, E _p is the flame hazard, E _v is the odor hazard, E _L is the illuminance hazard, E _t is the temperature is the risk

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