KR20220067553A - Safety management systems and methods for confined space workers - Google Patents

Abstract

The present invention relates to a safety management system and method for confined space workers, and more specifically, to a safety management system and method for confined space workers, which primarily determine whether safety equipment is equipped by determining whether the numerical information in a first RFID tag attached to the safety equipment of a worker in a confined space matches the information input by a manager, secondarily determine whether an authorized worker is possessed through whether or not the second RFID tag is possessed to permit access to the confined work space only by the authorized workers equipped with the safety equipment, and not to allow unauthorized workers to enter even though the safety equipment is insufficient or the safety equipment is complete.

Description

Safety management systems and methods for confined space workers

The present invention relates to a system and method for safety management of workers in a confined space, and more particularly, to a safety equipment for a worker in a confined space, an RFID tag to which unique numerical information is assigned is attached, the numerical information is counted, and the counted numerical value By judging whether the information matches the entry standard numerical information value entered by the administrator, only legitimate workers who are equipped with safety equipment can enter, while workers without safety equipment are denied entry and a seal that generates a notification signal at the same time. It relates to a space worker safety management system and method.

According to the announcement by the Ministry of Employment and Labor, 150 people were injured due to suffocation in the past five years from 2014 to 2018, of which 76 (51%) died. reported. The suffocation disaster belongs to a high risk of death of workers due to suffocation of harmful gases or oxygen deficiency in confined spaces such as wastewater treatment plants, manholes, septic tanks, and livestock excreta treatment plants as the weather becomes hotter. Therefore, according to the safety work procedures of the Ministry of Labor and the Occupational Safety and Health Agency, although warnings about the dangers of working in confined spaces, measurement of oxygen and harmful gas concentrations in the working environment in confined spaces, wearing safety equipment, and sufficient ventilation during work are presented, As the above procedures are not followed, suffocation disasters continue to occur.

As a part of preventing the occurrence of the suffocation disaster, there is disclosed a prior document relating to an access control system for workers using an electronic tag. Korean Patent Application Laid-Open No. 10-2006-0101405 (published on September 22, 2006) relates to an access control system through double inspection of a user's helmet and safety equipment using an electronic tag. More specifically, a reader is installed on the door. By doing so, access is permitted only when the electronic tag information attached to the worker's helmet and safety equipment is recognized at the same time, and the reader is installed in the work space, which is a dangerous area, thereby monitoring the worker's wearing of a hard hat and safety equipment. . However, the system has only been disclosed that the door is opened when it is determined that there are two or more signals on the principle that the tag of the safety helmet and safety equipment are recognized at the same time, but the principle for the standard setting and judgment of the safety equipment completion of the operator is not disclosed. There is a problem in that it is not possible to accurately determine the completion or not.

On the other hand, Korea Patent Publication No. 10-0943757 (published on February 23, 2010) relates to an access management system and method, and includes an RFID sensor, an infrared sensor sensor, and an access authentication controller. More specifically, the RFID detection unit generates an RFID detection signal according to detection of whether or not tag information transmitted from an RFID tag worn by an occupant is received, and the infrared sensor detection unit generates an RFID detection signal according to whether an infrared signal generated from the entrant's body is received or not. An infrared detection signal is generated, and the access authentication control unit authenticates the entry or exit of the entrant according to the presence or absence of unauthorized entrants determined by comparing the coefficients of the RFID detection signal and the infrared detection signal transmitted from each of the RFID detection unit and the infrared sensor detection unit. do. However, there is a problem in that the access management system only permits the access of the authorized person wearing the proper RFID tag, and cannot grant the access by determining whether the safety equipment is complete.

Korean Patent Publication No. 10-2006-0101405 (published on September 22, 2006) Korean Patent Publication No. 10-0943757 (published on February 23, 2010)

The closed space worker safety management system and method of the present invention are to solve the above problems, and the safety equipment of the closed space worker is attached with a first RFID tag to which unique numerical information is assigned, so that the numerical information is counted and counted. Enclosed space worker safety, which determines whether or not the entered numerical information matches the entry standard numerical information value entered by the administrator, and whether or not safety equipment is complete. To provide a description of the management system and method.

In addition, by possessing a second RFID tag including affiliation information and safety training completion certification information, the worker permits access only to legitimate workers among those who are equipped with safety equipment, and disallows access to unjust workers. At the same time, it is intended to provide a technology related to a system and method for safety management of workers in confined spaces that generate an incomplete notification signal.

Additionally, through the process of comparing and judging whether numerical information counted from the RFID tag attached to the safety equipment and the administrator's access standard numerical information match, information on incomplete safety equipment can be notified through the failure notification signal. We intend to provide a technology related to a system and method for safety management of workers in confined spaces that can be

In order to solve the above problems, the system and method for safety management for workers in a confined space of the present invention include: a first RFID tag attached to one or more safety equipment worn by the worker, and to which unique numerical information is assigned for each safety equipment; a second RFID tag carried by the worker and storing information of a legitimate worker; an infrared sensing unit for detecting an infrared signal generated from the body of the worker and generating an operation signal for a closed space worker safety management system; By receiving the operator safety management system operation signal generated from the infrared detection unit, numerical information of the first RFID tag transmitted from the first RFID tag is sensed to generate a first RFID detection signal including the numerical information, and the an RFID sensing unit detecting second RFID tag information transmitted from the second RFID tag and generating a second RFID detection signal including the tag information; a manager control unit including an access standard numerical information input unit for storing numerical access standard information input by an administrator, and an access standard numerical information signal transmitting unit for generating a signal corresponding to the access standard numerical information; Receives the first RFID detection signal and the access standard numerical information signal, counts the numerical values included in the first RFID detection signal, and determines whether the counted numerical information and the numerical information included in the access standard numerical information signal match In case of a match, the second RFID detection signal is received and analyzed to allow the worker to enter and exit, and if it does not match, an access control unit that disallows the worker from entering.

As an example of the present invention, the access control unit may include: a counting module that receives a first RFID detection signal generated from the first RFID detection unit and counts numerical information included in the first RFID detection signal; By judging whether the numerical information of the counted first RFID detection signal transmitted from the counting module and the numerical information of the entry standard numerical information signal match, if they match, a safety equipment complete detection signal is transmitted. a complete determination module for transmitting a defect detection signal; a failure notification module for receiving a safety equipment failure detection signal from the completeness determination module and transmitting a failure notification signal; and when receiving a safety equipment inadequacy detection signal from the completeness determination module, lock and drive the access restriction device installed in the entry part, and when receiving a safety equipment complete detection signal from the completeness determination module, the second RFID detection signal may include a;

As an example of the present invention, the RFID sensing unit includes a first RFID reader to detect whether tag information of a first RFID tag to which unique numerical information is assigned for each safety device has been received, and the received first RFID tag information a first RFID detection unit that transmits a detection signal; and a second RFID sensing unit for detecting whether tag information of a second RFID tag in which information of a legitimate worker is stored, including a second RFID reader, is received, and transmitting a detection signal of the received second RFID tag information; may include have.

As an example of the present invention, when receiving the safety equipment complete detection signal from the completeness determination module, the access control device control module receives the second RFID detection signal transmitted from the second RFID detection unit, and a legitimate operator It may be to control the locking or opening operation of the access limiting device according to whether the worker is a legitimate worker by collating and analyzing the information database.

As an example of the present invention, the failure notification module may include one or more failure notification devices that generate a visual or audible alarm according to the generated failure notification signal.

The present invention may provide a closed space worker safety management device having the closed space worker safety management system as another example.

As another example, the present invention may provide a method for managing an operator entering an entry part of a closed workspace. The method of managing a worker entering the entry part of the sealed work space includes: inputting, by a manager, entry standard numerical information; detecting an infrared signal generated from the body of the operator; receiving and detecting tag information of a first RFID transmitted from a first RFID tag attached to one or more safety equipment worn by the worker, and to which unique numerical information is assigned for each safety equipment; determining whether the operator is fully equipped with safety equipment by counting the numerical information assigned in the sensed first RFID tag information and comparing it with the numerical information input by the operator; and if the counted first RFID numerical information and the access standard numerical information do not match, disallowing the worker, if they match, determining whether the worker is a legitimate entrant or not, and determining whether to allow the entry; Containing a characterized in that

As an example of the present invention, the disallowing step may include comparing the counted first RFID numerical information and the access standard numerical information and generating a notification according to the detection of an entry of an operator with insufficient safety equipment when there is a discrepancy; and locking and driving the access limiting device of the entry unit.

As an example of the present invention, the step of determining whether or not the worker is a legitimate entry and exit may include detecting the second RFID reception signal when a worker equipped with safety equipment enters or not, and the operator has receiving and detecting the second RFID tag information; determining whether the worker equipped with the safety equipment is a legitimate operator equipped with safety equipment by comparing the detected second RFID tag information with the legitimate operator database; when the determination result is inconsistent, generating a notification according to the detection of entry of an unjust worker, and locking the access control device; and opening and driving the access limiting device when the determination result is the same.

As an example of the present invention, generating the notification may include generating a visual or audible alarm.

In the closed space worker safety management system and method of the present invention, only legitimate workers who are equipped with safety equipment in the enclosed space can enter, while workers with insufficient safety equipment disallow entry and at the same time generate an incomplete notification signal, There is an effect to prevent suffocation accidents of workers by notifying information about insufficient safety equipment through a notification signal.

In addition, the closed space worker safety management system optionally further includes a display module, so that it is possible to grasp in real time the risk level of the confined space through the operator status of the closed space and the measured oxygen and harmful gas concentrations, so that the manager located outside the closed space It facilitates work and risk management and has the effect of preventing further damage by suppressing reckless rescue activities in the event of a suffocation accident.

1 is a conceptual diagram of a closed space worker safety management system according to an embodiment of the present invention. FIG. 1 (a) shows a case of a legitimate worker fully equipped with safety equipment, and FIG. 1 (b) shows a case of a worker lacking safety equipment. it is one drawing
2 is a view showing the configuration of a closed space worker safety management system according to an embodiment of the present invention.
3 is a view showing the detailed configuration of the access control unit of the present invention.
4 is a block diagram illustrating a method for safety management of workers in a closed space according to an embodiment of the present invention.
5 is a block diagram illustrating a method for determining whether safety equipment is complete according to the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature used herein is those well known and commonly used in the art.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or precedent of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

As used herein, terms such as “comprises,” “comprises,” or “has” refer to the presence of, and refer to, a feature, number, step, operation, component, part, or combination thereof described in the specification. It does not exclude the possibility that other features, figures, steps, operations, components, parts, or combinations thereof not present or may be added.

In the closed space worker safety management system 10 which is an example of the present invention, the workers A and U are safety equipment 100 for safely working in a closed work space, and the safety helmet 110 and the gas measurement sensor 120 ) and an air respirator 130, etc., the present invention is characterized in that it includes the first RFID tag 200 attached to each safety equipment and to which unique or different numerical information is assigned. In addition, in order to set a criterion for determining whether the safety equipment 100 is complete, the present invention includes a manager control unit 500 to which entry standard numerical information is input by the manager (S). The inputted access standard numerical information can be compared and analyzed with numerical information in the tag information included in the first RFID tag 200 in the access control unit 600 to determine whether safety equipment is complete or not. In case of insufficient safety equipment, entry is not allowed, and an incomplete notification signal is generated to remind the awareness of wearing safety equipment and prevent suffocation accidents during work.

Hereinafter, the closed space worker safety management system 10 of the present invention will be described in detail with reference to FIGS. 1 to 3 .

1 is a conceptual diagram of a closed space worker safety management system 10 according to an embodiment of the present invention, in which FIG. 1 (a) is a case of a legitimate worker (A) equipped with safety equipment, and FIG. It is a diagram showing the case of an insufficient operator (U).

The enclosed space worker safety management system 10 of the present invention installed at the entrance to the enclosed work space is attached to one or more safety equipment 110 , 120 , 130 worn by the worker, and unique numerical information for each safety equipment is provided. an assigned first RFID tag (210, 220, 230); a second RFID tag 240 possessed by the workers (A, U) and storing legitimate worker information; an infrared detection unit 300 for detecting an infrared signal generated from the body of the worker (A, U) and generating an operation signal for a closed space worker safety management system; By receiving the operator safety management system operation signal generated from the infrared sensing unit 300, numerical information of the first RFID tag transmitted from the first RFID tag is detected, and a first RFID detection signal including the numerical information is generated. an RFID detection unit 400 that detects second RFID tag information transmitted from the second RFID tag and generates a second RFID detection signal including the tag information; a manager control unit 500 including an access standard numerical information input unit for storing numerical access standard information input by an administrator (S) and an access standard numerical information signal transmitter for generating a signal corresponding to the access standard numerical information; Receives the first RFID detection signal and the access standard numerical information signal, counts the numerical values included in the first RFID detection signal, and determines whether the counted numerical information and the numerical information included in the access standard numerical information signal match In the case of a match, the second RFID detection signal transmitted by the second RFID tag is additionally received and analyzed to permit the worker's entry, and if it does not match, the access control unit 600 for disallowing the worker's entry; includes; do.

Referring to Figure 1 (a), the first RFID tag (210, 220, 230) is attached to the safety equipment (110, 120, 130) is complete before entering the closed work space, the information of a legitimate operator is stored The worker A carrying the second RFID tag 240 passes through the infrared detection unit 300 and the RFID detection unit 400 . When it is determined by the access control unit 600 as a legitimate worker who is fully equipped with safety equipment, the access restriction device module 640 is driven open to enter the sealed work space.

The safety equipment 100 is not limited as long as it is equipment that can prevent suffocation accidents of workers in a closed work space, and typically, a hard hat 110, a gas measurement sensor 120, and an air respirator 130 may be used. , Preferably, as the gas measuring sensor 120, a gas measuring sensor capable of transmitting the measured harmful gas concentration by wire or wireless may be used.

The first RFID tag 200 is a member including numerical information in tag information as an index that can be recognized by dividing by safety equipment to check whether safety equipment is complete or not and to provide information on incomplete safety equipment. The numerical information may be any numerical value, character, special character, or a mixture thereof, and is not limited to the notation format and number of characters thereof. As an example, the first RFID tags 210 and 220 to which unique or different numerical information '1', '3' or '5' is assigned to the hard hat 110 , the gas measurement sensor 120 , and the air respirator 130 , respectively. , 230) may be attached.

Accordingly, the manager (S) selects the listed safety equipment (110, 120, 130) deemed necessary as an example, and numerical information of the first RFID tags (210, 220, 230) unique to the safety equipment. These are input to the manager control unit 500 as access standard numerical information. The manager (S) may input '1' assigned to the hard hat, '3' assigned to the gas measurement sensor, and '5' assigned to the air respirator into the manager control unit 500 .

The second RFID tag 240 is an index for distinguishing eligible workers under the management supervision of the manager S, and information of a legitimate worker is stored, and the worker holding the second RFID tag 240 is an access control unit (600) can be judged as a legitimate worker. The qualified worker as the legitimate worker may be a person belonging to a affiliation subject to the management and supervision of the manager S as described above, and preferably belonging to the affiliation subject to the supervision of the manager S and in a closed working space. It may be a person who has completed safety training including work procedures, equipment operation procedures, and accident response procedures. Therefore, the access restriction according to the possession of the second RFID tag can prevent a worker not belonging to the manager from entering and exiting. It is possible to prevent the entry of persons who cannot use the equipment.

Finally, the access control unit 600 determines whether the numerical information of the access standard input by the manager S matches the numerical information of the wearer's first RFID tag 200 as a first step, and as a second step, the right operator It is determined whether the worker is permitted to enter or not by determining whether the second RFID tag 240 in which information is stored is possessed. A legitimate worker (A) who is fully equipped with safety equipment is permitted to enter the closed work space by driving the access limiting device module 640 of the access control unit 600 to open, but the worker U without safety equipment is an access limiting device 640 is driven to lock the entry is not allowed.

2 is a view showing the configuration of a closed space worker safety management system according to an embodiment of the present invention.

The infrared detection unit 300 includes an infrared detection sensor 310 that detects an infrared signal generated from the operator's body and an infrared detection information signal that generates a signal to operate the RFID detection unit 400 in the enclosed space worker safety management system. and a transmitter 320 .

The infrared detection unit 300 serves to start the detection step of the worker safety management system of the present invention by operating the RFID detection unit 400 in the idle state according to the entry of the operator.

The RFID detection unit 400 includes a first RFID reader 410 to detect whether or not the received tag information of the first RFID tag 200 to which unique numerical information is assigned for each safety equipment is received. a first RFID detection unit 411 for transmitting a detection signal of RFID tag information; and a second RFID reader 420 to detect whether the tag information of the second RFID tag 240 in which the information of a legitimate worker is stored, and whether or not the tag information is received, and to transmit a detection signal of the received second RFID tag information. part 421;

The RFID sensing unit 400 transmits information on wearing safety equipment through the first RFID tag 200 and operator information through the second RFID tag 240 to the access control unit 600 .

The manager control unit 500 includes an access standard numerical information input unit 510 in which the access standard numerical information input by the administrator is stored; and an access standard numerical information signal transmitter 520 for generating a signal corresponding to the access standard numerical information.

The manager control unit 500 inputs and stores numerical information of safety equipment that an operator must wear according to safety management rules by a wired or wireless known data transmission method through the access standard numerical information input unit 510, The numerical information is transmitted to the access control unit 600 through the access standard numerical information signal transmitting unit 520 . As the input method of the numerical information of the safety equipment, numerical information of the first RFID tag attached to each safety equipment may be individually input, or a arithmetic operation value of the numerical information may be input. As an example, the method of individually inputting numerical information of the first RFID tag attached to each safety device is '1' assigned to the hard hat 110, as shown in FIG. 1(a), and the gas measurement sensor 120 ) and '5' assigned to the air respirator 130 are inputted in an arbitrary order. Accordingly, the numerical information of the first RFID tag input and stored in the access standard numerical information input unit 510 may be ‘1’, ‘3’ and ‘5’.

The access control unit 600 receives the first and second RFID detection signals and the access standard numerical information signal transmitted from the first and second RFID detection units 411 and 421 and the access standard numerical information signal transmitting unit 520 . do.

As a first step, the access control unit 600 determines whether the numerical information of the access standard and the numerical information of the first RFID detection signal match, and when there is a discrepancy, operates the incomplete notification device 631 and locks the access restriction device It is controlled so that the operator is not allowed to enter. On the other hand, if they match, the legitimate operator information stored in the second RFID detection signal is collated and analyzed with the legitimate operator information database 700 as a second step. As a result of the analysis, if there is a discrepancy, the incomplete notification device 631 is operated and the access control device is controlled to lock and drive so that the worker is not allowed to enter. .

3 is a view showing the detailed configuration of the access control unit 600 of the present invention.

The access control unit 600 includes a counting module 610 that receives the first RFID detection signal generated from the first RFID detection unit 411 and counts numerical information included in the first RFID detection signal; By judging whether the numerical information of the counted first RFID detection signal transmitted from the counting module 610 and the numerical information of the entry standard numerical information signal match, if they match, a safety equipment complete detection signal is transmitted. is a complete determination module 620 for transmitting a safety equipment deficiency detection signal; a failure notification module 630 for receiving a safety equipment failure detection signal from the completeness determination module 620 and transmitting a failure notification signal; And when receiving the safety equipment inadequacy detection signal from the complete determination module 620, lock and drive the access restriction device 641 installed in the entry part, and receive the safety equipment complete detection signal from the complete determination module 620 In the case of receiving and analyzing the second RFID detection signal, the access control device control module 640 for opening and driving the access restriction device 641; includes.

In the counting method of the counting module 610 of the present invention, numerical information of the first RFID tag attached to each safety device may be individually counted, or the numerical information may be counted by arithmetic operations. As an example, the method of individually counting the numerical information of the first RFID tag attached to each safety device is '1' assigned to the hard hat 110 and the gas measurement sensor 120 as shown in FIG. 1(a). It means a case of counting the number of '3' assigned to '3' and '5' assigned to the air respirator 130, respectively, without performing arithmetic operations. Accordingly, the numerical information of the first RFID tag counted by the counting module may be '1', '3' and '5'.

The complete determination module 620 is a counting module 610 that individually counts the numerical information of the access standard transmitted from the access standard numerical information signal transmitting unit 520 and the numerical information of the first RFID tag attached to each safety equipment. It is judged whether the safety equipment of the operator is complete by comparing whether the delivered numerical information is consistent. As a result of the above determination, if they match, a safety equipment complete detection signal is transmitted to the access control device control module 640, and if they do not match, a safety equipment deficiency detection signal is transmitted to the insufficient notification module 630 and the access restriction device control module ( 640).

The failure notification module 630 includes one or more failure notification devices 631 that generate a visual or audible alarm according to the failure notification signal.

As an example of the failure notification device 631 for generating the visual alarm, a warning light displaying a single color or multiple colors or a display panel displaying characters may be used as a known means.

The audible alarm may be used without limitation as long as it is a known means for generating an alarm sound.

The safety equipment inadequacy detection signal transmitted from the completeness determination module 620 may additionally accompany numerical information of the first RFID tag causing the inconsistency determination result. Accordingly, the failure notification module 630 may receive the numerical information and provide insufficient safety equipment information along with a visual or audible alarm through the failure notification device 631 .

The inadequacy notification module 630 is an alarm informing that the safety equipment is insufficient when receiving a safety equipment deficiency detection signal as a result of determining whether the safety equipment is complete through the first RFID tag 200 of the completeness determination module 620 . causes In addition, when the illegal operator detection signal is received as a result of determining whether the worker is a legitimate worker through the second RFID tag 240 of the access control device control module 640, an alarm indicating that the worker is an illegal worker is generated.

When receiving the safety equipment complete detection signal from the completeness determination module 620, the access control device control module 640 receives the second RFID detection signal transmitted from the second RFID detection unit 421, It is compared and analyzed with the legitimate worker information database 700 to determine whether the worker equipped with the safety equipment is a legitimate worker. As a result of the determination, if the legitimate worker information in the database 700 matches, a legitimate worker detection signal is transmitted to control the access limiting device 641 to open and drive, and if it does not match, the illegal operator detection signal is insufficient It transmits to the notification module 630 and the access control device control module 640 to control to generate an alarm and lock the access control device 641, respectively.

The legitimate worker information database 700 may include information of a person belonging to a affiliation subject to the management and supervision of the manager (S), preferably a work procedure in a closed work space, equipment operation procedure, accident response procedure, etc. It may include information of persons who have completed safety education, including

The access limiting device 641 is to directly restrict the worker's entry, such as a blocking bar type and a slide door type, or is provided in a closed compartment door such as a lock type to indirectly restrict the worker's entry. However, it is not limited to the above-described example.

Also, the access limiting device control module 640 may further include an open driving count recording device (not shown) for counting the number of open driving of the access limiting device 641 and storing the counted number of times.

As another example of the present invention, a display module (not shown) capable of receiving information via wire or wireless may be further provided.

The display module may receive and display the open driving number information stored in the open driving number recording device (not shown) of the access restriction module 640 to indicate the number of workers put into the work.

In addition, the display module receives and displays the harmful gas concentration information measured from the gas measurement sensor 120 provided by the operator to accurately determine the harmful gas concentration in the work environment and determine whether to continue the work, and In the event of a suffocation accident, it is possible to prevent additional damage due to reckless rescue activities.

The present invention may provide a closed space worker safety management device having the closed space worker safety management system as another example.

On the other hand, the present invention can provide a method for performing the safety management of the closed space worker based on the closed space worker safety management system. Hereinafter, a method for performing safety management of the closed space worker will be described.

The method of managing a worker entering the entry part of the enclosed work space of the present invention comprises the steps of: an administrator inputting numerical information on entry standards; detecting an infrared signal generated from the body of the operator; receiving and detecting tag information of a first RFID transmitted from a first RFID tag attached to one or more safety equipment worn by the worker, and to which unique numerical information is assigned for each safety equipment; determining whether the operator is fully equipped with safety equipment by counting the numerical information assigned in the sensed first RFID tag information and comparing it with the numerical information input by the operator; and if the counted first RFID numerical information and the access standard numerical information do not match, disallowing the worker, if they match, determining whether the worker is a legitimate entrant or not and determining whether to allow the access; includes .

According to an embodiment of the present invention, in the step of disallowing the worker from entering, when there is a discrepancy by comparing the counted first RFID numeric information and the entry standard numeric information, a notification is generated according to the detection of the entry of the worker with insufficient safety equipment. making; and locking and driving the access limiting device of the entry unit.

According to an embodiment of the present invention, the step of determining whether or not the worker is a legitimate entry/exit permitting step is performed by detecting the second RFID reception signal when a worker equipped with safety equipment enters or not, and receiving and detecting second RFID tag information; determining whether the worker equipped with the safety equipment is a legitimate operator equipped with safety equipment by comparing the detected second RFID tag information with the legitimate operator database; when the determination result is inconsistent, generating a notification according to the detection of entry of an unjust worker, and locking the access control device; and opening and driving the access limiting device when the determination result is the same.

In an embodiment of the present invention, generating the notification may include generating a visual or audible alarm.

Hereinafter, the present invention will be described in more detail with reference to Figs.

4 is a block diagram illustrating a method for safety management of workers in a closed space according to an embodiment of the present invention.

In step S101 , the administrator preemptively inputs the numerical information of the access standard into the numerical input of the access standard information input unit 510 . It is preferable that the manager's input of numerical information on access standards in step S101 is performed with the highest priority under the manager's safety management plan. After the detection step (S103), it may be performed before the first RFID signal detection step (S105).

Step S103 is a step of detecting an infrared signal generated from the operator's body. By detecting the infrared signal, the following first RFID tag signal detection step (S105) is started.

Step S105 is a step of receiving and detecting the tag information of the first RFID transmitted from the first RFID tag attached to one or more safety equipment worn by the operator and assigned numerical information unique to each safety equipment.

Step S107 is a step of counting the numerical information allocated in the detected first RFID tag information and comparing it with the numerical information input by the operator, and step S109 is a step of determining whether the operator is equipped with safety equipment according to whether or not it matches. is a step

If it is determined that the counted first RFID numerical information and the access standard numerical information do not match in step S109, step S111 is a step of generating a notification, step S113 is a step of locking and driving the worker's access restriction device to be.

When the counted first RFID numerical information and the entry standard numerical information match in step S109 and it is determined that the information is complete, step S115 is a step of receiving and detecting the second RFID tag information possessed by the operator, and confirming whether the safety equipment is complete This is the pre-step to check whether the worker is a legitimate worker or not. The second RFID tag information includes information on a qualified person who can work in the closed workspace, and the information on the eligible person may include safety education certification information as well as employee affiliation information. Therefore, in step S115, even if the person equipped with safety equipment is judged to be complete in step S109, it may be a worker belonging to another company who cannot work in the closed work space, or it may be a worker who has not completed safety training, so access is restricted is a step to

Step S117 is a step of comparing the detected second RFID tag information with a legitimate worker database, and step S119 is a step of determining whether a legitimate worker is a valid worker according to the match.

When it is determined that the second RFID tag information and the database do not match and it is determined that the worker is an unjust worker, steps S111 and S113 are performed.

If the second RFID tag information and the database match and it is determined that the worker is a legitimate worker, step S121 is a step of opening and driving the access control device. Qualified workers, fully equipped with safety equipment, are permitted to enter the enclosed work space.

5 is a block diagram illustrating a method for determining whether safety equipment is complete according to the present invention.

Step S201 is a step of receiving the entry standard numerical information input by the administrator.

An example of the step S201 is '1' assigned to the hard hat 110 by the manager as shown in FIG. If '5' is input in any order, individual numerical information of '1', '3' or '5' can be received.

Step S203 is a step of counting numerical information allocated in the sensed first RFID tag information.

As an example of the step S203, as shown in FIG. Numerical information '1', '3' or '5' may be counted and received.

The step S205 is a step of comparing the counted first RFID numerical information and the entry standard numerical information, and the step S207 is a step of determining whether they match through the comparison.

As an example of the step S205, the access standard numerical information '1', '3' or '5' input by the administrator in an example of the step S201 and the hard hat 110, the gas measurement sensor ( 120) and the numerical information '1', '3' or '5' allocated to the first RFID tags 210 , 220 , 230 attached to the air respirator 130 are determined to match.

If there is a match between the first RFID numerical information counted in step S207 and the entry standard numerical information, it is identified as a worker fully equipped with safety equipment (S209), and when there is a discrepancy, it is recognized as an operator with insufficient safety equipment (S211).

According to an example of the step S205, since the counted first RFID numerical information and the entry standard numerical information match, it is confirmed that the operator is fully equipped with safety equipment.

On the other hand, if applied to the worker not wearing the air respirator 130 shown in Fig. 1 (b) according to a series of procedures described as an example of a method for determining whether the worker is fully equipped with safety equipment, the determination result of step S207 is an air respirator ( Since the numerical information '5' allocated to the first RFID tag 230 attached to 130) does not match the access standard numerical information, it will be recognized as an operator with insufficient safety equipment (S211).

As described above, the present invention has been described with reference to the embodiments shown in the accompanying drawings, which are only exemplary, and various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand that Therefore, the technical protection scope of the present invention should be defined by the following claims.

10: Confined space worker safety management system
A: A legitimate worker fully equipped with safety equipment
U: Workers without safety equipment
S: Manager
100: safety equipment
110: hard hat
120: gas measurement sensor
130: air respirator
200: first RFID tag to which unique numerical information is assigned for each safety device
210: first RFID tag to which numerical information '1' is assigned
220: first RFID tag to which numerical information '3' is assigned
230: first RFID tag to which numerical information '5' is assigned
240: second RFID tag in which information of a legitimate worker is stored
300: infrared detection unit
310: infrared detection sensor
320: infrared detection information signal transmitter
400: RFID detection unit
410: first RFID reader
411: first RFID detection unit
420: second RFID reader
421: second RFID detection unit
500: admin control
510: entry standard numerical information input unit
520: access standard numerical information signal transmitter
600: access control
610: counting module
620: complete judgment module
630: insufficient notification module
631: incomplete notification device
640: access control device control module
641: access control device
700: Authorized worker information database

Claims (6)

In the system for managing the safety of a worker who enters the entry part installed in the closed working space entry,
a first RFID tag attached to one or more safety equipment worn by the worker and to which unique numerical information is assigned to each safety equipment;
a second RFID tag possessed by the worker and storing information of a legitimate worker;
an infrared detector for detecting an infrared signal generated from the body of the worker and generating an operation signal for a closed space worker safety management system;
By receiving the operator safety management system operation signal generated from the infrared sensing unit, numerical information of the first RFID tag transmitted from the first RFID tag is sensed to generate a first RFID detection signal including the numerical information, and an RFID sensing unit detecting second RFID tag information transmitted from the second RFID tag and generating a second RFID detection signal including the tag information;
a manager control unit including an access standard numerical information input unit for storing numerical access standard information input by an administrator, and an access standard numerical information signal transmitter for generating a signal corresponding to the access standard numerical information;
Receives the first RFID detection signal and the access standard numerical information signal, counts the numerical values included in the first RFID detection signal, and determines whether the counted numerical information and the numerical information included in the access standard numerical information signal match an access control unit that receives and analyzes the second RFID detection signal if they match, and permits the worker to enter;
A closed space worker safety management system comprising a.
According to claim 1,
The access control unit,
a counting module for receiving a first RFID detection signal generated from the first RFID detection unit and counting numerical information included in the first RFID detection signal;
By judging whether the numerical information of the counted first RFID detection signal transmitted from the counting module and the numerical information of the entry standard numerical information signal match, a safety equipment complete detection signal is transmitted if they match. a complete determination module for transmitting a defect detection signal;
a deficiency notification module for receiving a safety equipment deficiency detection signal from the completeness determination module and transmitting a failure notification signal; and
When receiving the safety equipment inadequacy detection signal from the completeness determination module, the locking operation of the access restriction device installed in the entry section is performed, and when receiving the safety equipment complete detection signal from the completeness determination module, the second RFID detection signal A closed space worker safety management system comprising a; an access control device control module that receives and analyzes the access control device to open and drive the access control device.
3. The method of claim 2,
The RFID sensing unit,
A first RFID sensing unit including a first RFID reader to detect whether tag information of a first RFID tag to which unique numerical information is assigned for each safety device has been received, and to transmit a detection signal of the received first RFID tag information ; and
and a second RFID detection unit for detecting whether tag information of a second RFID tag in which information of a legitimate worker is stored, including a second RFID reader, is received, and transmitting a detection signal of the received second RFID tag information. A closed space worker safety management system with
4. The method of claim 3,
The access control device control module,
When receiving the safety equipment complete detection signal from the completeness determination module, the second RFID detection signal transmitted from the second RFID detection unit is received, collated with and analyzed with a legitimate operator information database to determine whether the operator is a legitimate operator A closed space worker safety management system, characterized in that controlling the locking or opening operation of the access restriction device according to the
5. The method according to any one of claims 2 to 4,
The insufficiency notification module is a closed space worker safety management system, characterized in that it includes one or more incomplete notification devices for generating a visual or audible alarm according to the generated failure notification signal.
6. The method according to any one of claims 1 to 5,
A closed space worker safety management device having the closed space worker safety management system.

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