KR20230036738A - Suffocation accident prevention system - Google Patents

Abstract

The present invention relates to a suffocation accident prevention system, which can improve worker safety, comprising: a gas concentration measuring device including a gas concentration measuring means, a first warning means, and a first display means; a repeater including a second communication means, a second display means, and a second storage means; and a management device including a third communication means and a third warning means.

Description

Suffocation accident prevention system {Suffocation accident prevention system}

The present invention relates to a system for preventing suffocation, and more particularly, to a system for preventing oxygen concentration or hydrogen sulfide or propane by continuously monitoring the working environment of a worker working in an enclosed work space not only inside the work space but also outside the work space. It is about a suffocation accident prevention system that can improve the safety of workers from flammable or toxic gases such as butane, and can easily prevent accidents and identify causes of accidents through measurement, storage, and management of gas concentrations by work space. .

In general, an accident occurring in an enclosed work space may cause suffocation of a worker due to gas leakage and damage to property due to an explosion of combustible gas. In industrial sites, various harmful gases that are harmful to the human body are frequently generated, and the safety of workers is frequently threatened due to oxygen deficiency that is less than the worker can tolerate. In addition, since the explosion of combustible gas causes enormous damage to property and human life, it is necessary to prepare countermeasures against gas leakage and lack of oxygen.

In general, when the oxygen concentration is lowered to 18% or less in the air, it may pose a threat to the safety of workers, and when the oxygen concentration is lower than 10%, it is very dangerous because it leads to death. In addition, toxic gases such as hydrogen sulfide can irritate workers' mucous membranes, such as eyes, nose, and throat, and cause headaches, dizziness, and breathing difficulties when inhaled, and can even lead to death in the case of high concentration inhalation.

In order to prevent the risk of suffocation in an enclosed work space, the operator performs work while carrying a gas leak detector, and the gas leak detector is provided with an alarm generating means such as an alarm or vibration to notify the operator This is disclosed. Korean Patent Registration No. 10-1098434 (Registration date: 2011.12.19.) is characterized in that an abnormal situation such as gas leakage can be notified to a worker through a gas leak detector that can be attached to the worker's helmet. However, when an emergency occurs due to lack of oxygen or toxic gas, there may be a case in which danger occurs without a worker having time to deal with it. In other words, when a worker arrives at a work space in a situation where toxic gas is already prevalent in a closed work space due to gas leakage or lack of oxygen due to gas leakage before work, there is a situation where the worker is in danger due to toxic gas outside the normal range. However, with the above technology, there is a problem in that it is difficult to predict the situation of the workspace before work. In addition, in the case of an enclosed work space, there is a characteristic that the degree of leakage of a specific gas and oxygen deficiency develops similarly for each work space, so it is necessary to predict the dangerous situation of the work space in advance by predicting this. It can only cope with dangerous situations, but there is a limit to the trend of gas concentration by space and time and the prediction of dangerous situations. In the case of Korean Registered Patent Publication No. 10-1039416 (registration date: 2011.05.31.), it includes a technology that can inform a dangerous situation inside the work space in the form of an alarm by forming an auxiliary body outside, but the above The technology also has limitations in that data for predicting the risk of each work space or analyzing the cause in case of an accident cannot be accumulated and managed, and there is a problem in not being able to determine the gas leakage state of the work space before work.

KR 10-1098434 B1 2011.12.19. KR 10-1039416 B1 2011.05.31.

The present invention was created to solve the problems of the prior art, and according to the present invention, the gas concentration in the closed work space is detected in advance so that the safety of the work space is confirmed, and not only the workers inside the work space but also the work Safety is doubled by allowing the manager who manages the outside of the space and the management device to be notified of the gas concentration inside the work space, and the risk level is measured for each work space through the hourly trend of gas concentration by work space, and accident prevention is ensured. It relates to a system for preventing suffocation, characterized in that it can be achieved.

To achieve the above object, a system for preventing suffocation of the present invention includes a gas concentration measuring means for measuring a gas leaked into a closed working space; a first storage means for storing the gas concentration measured by the gas concentration measuring means, the measurement time, and the location of the work space; a first communication means for transmitting gas concentration, measurement time, and location information data of the work space to the repeater; a first warning means for notifying a worker of danger through an alarm, vibration, or alarm operation when the gas concentration measured by the gas concentration measurement means is out of a normal range; And a first display means for displaying the measured gas concentration; receiving gas concentration, gas concentration measurement time and work space location information data from the gas concentration measuring device, and transmitting the data to a management device a second communication means; a second display means for displaying the gas concentration and measurement time; And a second storage means for collecting and storing the gas concentration, measurement time and workspace location information data received from the gas concentration meter; and receiving gas concentration, measurement time and workspace location information data from the repeater a third communication means; Web-based monitoring means for integrated storage, management, and display of gas concentration, measurement time, and location information data for each work space; When the gas concentration of each work space is out of the normal range, a third alarm means for notifying the manager of the location and dangerous situation of the work space in which a dangerous situation has occurred through driving an alarm and an alarm, characterized in that it consists of a management device comprising: do.

In addition, the gas concentration measuring device further includes auxiliary gas concentration measuring means withdrawable from the gas concentration measuring device, wherein the auxiliary gas concentration measuring means is connected to the gas concentration measuring device through a lead line, and the auxiliary gas concentration measuring means is It is characterized in that the gas concentration in the work space can be measured in advance by being extended from the lead line and inserted into the work space.

In addition, the repeater is formed at a position of 0.5 to 5 m from the work space to indicate that the work space is under construction, and further includes a second alarm means for generating an alarm or alarm so that the gas concentration in the work space is within a normal range. In the case of deviation, it is characterized in that an alarm or warning light is driven to notify the danger.

In addition, the management device integrates management of data transmitted from one or more repeaters, and is capable of grading and managing the risk level for each work space through real-time measurement, monitoring, and cumulative management of the measured gas concentration for each work space. to be

According to the present invention, it is possible to detect gas leakage or lack of oxygen in the work space before work, and the safety of the operator can be improved through a repeater and a management device formed outside the work space.

In addition, according to the present invention, by accumulating and managing gas concentration data for each work space, the risk level for each work space can be predicted, and the cause of the accident can be easily identified through cause analysis when an accident occurs.

1 is a view showing connections and detailed components of a gas concentration meter, repeater, and management device constituting the asphyxia prevention system of the present invention.
Figure 2 is a view showing that the management device in the asphyxia prevention system of the present invention can manage the repeater and gas concentration meter for each work space.
Figure 3 is a view showing that the gas concentration meter inside the working space of the system for preventing suffocation according to the present invention and an external repeater can communicate.
Figure 4 is a view showing a gas concentration meter applied to the suffocation prevention system of the present invention.

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

Figure 1 is a view showing the connection and detailed components of the gas concentration meter 100, repeater 200 and management device 300 constituting the asphyxia prevention system of the present invention, Figure 2 is the management device 300 It is a diagram showing that it is possible to receive and manage gas concentration related data for each work space received from the relay 200 . The gas concentration meter 100 is portable by a worker, and is designed to be movable after being carried in a portable place such as a waist or a helmet when a worker enters a work space.

The gas concentration measuring device 100 includes a gas concentration measuring unit 110 capable of measuring the gas concentration in the working space. The measurable gas basically includes oxygen required for breathing by workers, and may include combustible gases such as propane, butane, and methane. In addition, toxic gases such as hydrogen sulfide and acetylene may be included. In the case of oxygen, when the concentration of oxygen falls below 18%, which is the concentration required for respiration, an alarm can be issued to promote the safety of workers. There may be. In addition, by storing the range of gas concentrations prescribed by laws related to gas safety in the gas concentration meter, when the concentration of the corresponding gas is measured out of the normal range, the first alarm means 140 can be operated.

According to the present invention, the time at which the gas concentration is measured and the position of the working space can be measured and stored through the gas concentration measuring instrument 100. In the case of the gas concentration measurement time, it can be stored through a process such as setting the work start time in a state where the gas concentration meter 100 is turned on before the worker enters the work space, and the location information of the work space In this case, a recognizable serial number can be given to each work space, and then the serial number of the work space can be stored in the gas concentration measuring instrument 100.

In the first storage means 120 formed inside the gas concentration meter, the concentration of the gas to be measured, the measurement time of the gas concentration, and the location information data of the corresponding work space may be stored, and the data may be stored in the first communication means 130 ), it can be transmitted to the second communication means 210 formed in the repeater 200 at a short distance. The transmission of the data is performed in real time, and through the real time transmission, the safety of workers can be improved by allowing the dangerous situation inside the work space to be directly displayed on the repeater.

Data related to the inside of the workspace is also transmitted in real time to the management device 300 to be described later through the repeater 200, so the safety of the worker can be double-protected. That is, the safety of the workers inside the work space is further improved by allowing the manager of the management device 300 to identify a dangerous situation in the work space and notify other workers located outside the work space of the danger.

The gas concentration meter 100 is provided with a first display unit 150 so that the operator can instantly know the gas concentration in the work space while carrying the gas concentration meter 100 . The gas concentration is displayed in real time on the first display unit 150, and the transition of the gas concentration is displayed in a graph form according to selection, so that a dangerous situation can be detected in advance. That is, when the gas concentration is expected to be out of the safe range through the trend of the graph, the worker can be allowed to exit the workspace in advance, and the trend of the graph is displayed in the repeater 200 and the management device 300, respectively. The formed second display means 220 and the monitoring means 320 are also displayed so that the danger can be predicted by other workers and/or managers outside the work space even when the worker inside the work space cannot predict the dangerous situation. do.

The present invention is basically capable of measuring the oxygen concentration in order to maintain the worker's stable breathing, and selects and manages a gas expected to leak according to the characteristics of each work space. That is, by further providing a gas selection means (not shown) in the gas concentration meter 100, the first display means 150 having a size limitation is appropriately utilized by selecting and displaying a gas expected to leak for each work space. make it possible The selection of expected leakage gas for each work space is made possible through the data accumulated in the management device 300, or the characteristics of the region where the work space is located can be considered.

The gas concentration measuring device 100 further includes an auxiliary gas concentration measuring means 160 separately from the gas concentration measuring means 110 . The auxiliary gas concentration measuring means 160 is connected to the main body of the gas concentration measuring instrument 100 through a lead line 170, and has the same function as the gas concentration measuring means 110. That is, the auxiliary gas concentration measuring means 160 enables the measurement of the oxygen concentration required for breathing by the worker, the concentration of combustible gas such as propane, which may explode in case of leakage, and/or the concentration of toxic gas such as hydrogen sulfide. The auxiliary gas concentration measuring means 160 is for measuring the oxygen concentration and/or the concentration of leaked gas before the worker enters the work space and performs work, and the safety of the worker is ensured by determining whether the work space is safe in advance. make it possible to improve

Since it is common for a worker's work space to reach 5 to 10 m vertically from the ground, if a worker enters without detecting gas that has already leaked, it may be in danger. Conventionally, a method of sampling and measuring a portion of the air inside the workspace is taken, but there is a possibility that the concentration of leaked gas contained in the air sampled may not be accurate depending on the depth of the workspace, and the sample is collected according to the lapse of time after sampling. There is a limit in that the concentration of the leaked gas according to the time difference between the time and the time of measurement does not match. In the present invention, by drawing the auxiliary gas concentration measuring means 160 from the gas concentration measuring instrument using the lead wire 170 and entering the working space, the leakage gas or oxygen concentration inside the working space can be measured in real time, If necessary, by continuously positioning the auxiliary gas concentration measuring means 160 inside the working space for a predetermined time, the oxygen concentration and/or the selected gas concentration are measured in advance so that the risk can be predicted.

The repeater 200 receives and displays the data transmitted from the gas concentration meter 100, and retransmits the received data to the management device 300 again. Data transmitted from the gas concentration meter 100 may include gas concentration, measurement time, and location information of a corresponding work space, and the data is displayed through the second display unit 220 . In addition, the repeater 200 further includes a second storage means 230 for storing the data received from the gas concentration meter 100, and when the oxygen concentration or the selected gas concentration is out of the normal range, an alarm or warning is issued. By providing the driving second warning means 240, other workers or passers-by outside the work space can recognize the danger through the second warning means 240 and immediately take measures for the safety of the workers.

The repeater 200 of the present invention enables communication with the gas concentration meter 100 by wire or wireless, but preferably wireless communication so that the operator's work is not disturbed by the wire. Due to the fact that the work space is generally formed underground, the gas concentration meter 100 and the repeater 200 are formed close to each other. That is, the repeater 200 is formed at a close distance of 0.5 to 5 m from the entrance of the work space, so that mutual communication can be made smoothly. Therefore, the strength of the signal between the gas concentration meter 100 and the repeater 200 does not need to be maintained particularly strong, and preferably, any one of Bluetooth, UWB, ZigBee, or Wi-Fi method is selected to enable mutual communication. .

The repeater 200 can also be used as a safety standing signboard to notify whether or not the work space is working. That is, by displaying 'under construction' or 'at work' on the second display means 220 formed in the repeater 200, it is possible to call attention to vehicles or passers-by passing through the work space. By embedding a GPS device for location recognition in the repeater 200, the location can be double-recognized through the GPS device in addition to the location information data received from the gas concentration meter 100. The position information of the gas concentration meter 100 may be input by the operator, but if the input data by the operator and the position information acquired through the GPS device of the repeater 200 are different, the GPS of the repeater 200 is preferentially Allows location information by the device to be adopted. That is, due to the possibility of an error in position information input by an operator, the position information obtained through the GPS device of the repeater 200 is preferentially adopted and managed. When the location information data input through the gas concentration meter 100 and the location information data input through the GPS device of the repeater 200 are different, the management device 300 determines the position input from the GPS device of the repeater 200. Adopt and manage information data.

The communication between the gas concentration meter 100 and the repeater 200 adopts a short-distance wireless communication method, but the communication between the repeater 200 and the management device 300 adopts and uses a communication method applicable to a relatively long distance. . It is not necessary to limit the communication method between the repeater 200 and the management device 300 to the wireless communication method, but the repeater 200 is not fixed for each work space, but the characteristics of being moved to another work space as needed and used Considering this, it is preferable to use a wireless communication method such as CDMA, W-CDMA, or TDMA.

The second communication means 210 formed in the repeater 200 of the present invention includes a short-distance wireless communication device for communication with the gas concentration meter 100 and a relatively long-distance wireless communication device for communication with the management device 300. By doing so, the data obtained from the gas concentration meter 100 can be safely transmitted to the management device 300. As described above, since the gas concentration meter 100 is located inside the work space, it is difficult to directly transmit the acquired data over a long distance. According to the present invention, the relay 200 serves as a relay for transmitting the data obtained from the gas concentration meter 100 to the management device 300, so that work space data such as gas concentration is smoothly transferred to the management device 300. can be sent

The management device 300 receives gas concentration, gas measurement time, and location information data of the workspace from the repeater 200 through the third communication means 310, and stores the received data through the monitoring means 320. , management and display, and when the gas concentration in the work space is out of the normal range, the location and dangerous situation of the work space can be notified to the manager through the driving of the third alarm means 330 such as an alarm and/or an alarm. The management device 300 is characterized in that it integrates and manages gas concentrations inside work spaces distributed in wide-area workplaces. That is, the management device 300 of the present invention includes two or more gas concentration detection devices for each work space including a gas concentration measuring device 100 and a repeater 200 installed in close proximity to the gas concentration measuring device 100. management to enable integrated management. In general, in the case of a county unit workplace, 20 to 30 workers are scattered and work, and if each worker simply carries only the gas concentration meter 100, there is a possibility that an emergency response cannot be made. In the reality that 40 to 50 people die of suffocation every year, it is necessary to form a wide-area suffocation prevention system through mutual communication between workers and management devices.

The present invention is characterized by improving the safety of workers inputted for each work space through systematization of the gas concentration meter 100, the repeater 200, and the management device 300 for integrated management thereof. That is, the management device 300 of the present invention receives and stores the oxygen concentration and / or gas concentration measured in real time for each work space, and continuously manages them, thereby predicting the risk according to the hourly trend of the oxygen and / or gas concentration and to prevent accidents by suffocation. The management device 300 of the present invention measures the risk level of each work space by cumulatively managing the gas concentration by work space, and promotes safety by providing information to alert workers working in the high-risk work space. make it possible According to the present invention, even when a suffocation accident occurs in a work space, the gas that causes suffocation is estimated through the trend of oxygen concentration and/or gas concentration that has been measured and accumulated from before and the cause is analyzed, thereby preventing the recurrence of the accident. You will have the effect you can do. In addition, according to the present invention, it is possible to improve the safety of workers by identifying gas leakage or lack of oxygen in the work space before work, and by accumulating and managing data of oxygen concentration and / or gas concentration for each work space, Risk becomes predictable.

Although preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it should be understood that the scope of the present invention extends to those within the scope substantially equivalent to the embodiments of the present invention. Various modifications and implementations are possible by those skilled in the art to which the invention pertains without departing from the spirit of the invention.

100: gas concentration measuring device 110: gas concentration measuring means
120: first storage means 130: first communication means
140: first alarm means 150: first display means
160: auxiliary gas concentration measuring means 170: lead line
200: repeater 210: second communication means
220: second display means 230: second storage means
240: second alarm means 300: management device
310: third communication means 320: monitoring means
330: third alarm means

Claims (2)

Gas concentration measuring means for measuring the gas leaking into the closed working space; a first storage means for storing the gas concentration measured by the gas concentration measuring means, the measurement time, and the location of the work space; a first communication means for transmitting gas concentration, measurement time, and location information data of the work space to the repeater; a first warning means for notifying a worker of danger through an alarm, vibration, or alarm operation when the gas concentration measured by the gas concentration measurement means is out of a normal range; and a first display means for displaying the measured gas concentration; a gas concentration measuring device comprising;
a second communication means for receiving gas concentration, measurement time, and workspace location information data from the gas concentration measuring instrument and transmitting the data to a management device; a second display means for displaying the gas concentration and measurement time; And second storage means for collecting and storing the gas concentration, measurement time, and work space location information data received from the gas concentration meter;
third communication means for receiving gas concentration, measurement time, and workspace location information data from the repeater; Web-based monitoring means for integrated storage, management, and display of gas concentration, measurement time, and location information data for each work space; When the gas concentration of each work space is out of the normal range, a third alarm means for notifying the manager of the location and dangerous situation of the work space in which a dangerous situation has occurred through driving an alarm and an alarm, characterized in that it consists of a management device comprising: suffocation prevention system.
According to claim 1,
The repeater,
It is formed at a position of 0.5 ~ 5m from the work space to indicate that the construction of the work space is in progress, but further includes a second alarm means for generating an alarm or warning light so that when the gas concentration in the work space is out of the normal range, an alarm or warning light A choking accident prevention system, characterized in that for notifying the danger by driving.

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