KR102631879B1 - the system for gas inspection and managing safety of gas inspection site - Google Patents

Abstract

The gas inspection and gas inspection site safety management system according to an embodiment of the present invention includes a portable gas detector that detects a target gas present inside the inspection space and outputs gas information about the target gas based on the detected information; a server that generates an inspection report related to the target gas using the gas information, and a server disposed outside the inspection space and outputting visual information associated with the gas information and sound information associated with the gas information using the gas information. Includes gas information output.

Description

Gas inspection and gas inspection site safety management system {the system for gas inspection and managing safety of gas inspection site}

The present invention relates to gas inspection and gas inspection site safety management system.

In general, accidents caused by gases occur in closed spaces or, even if not closed, in spaces where outdoor air circulation is poor. Accordingly, spaces vulnerable to gas leaks (hereinafter referred to as 'vulnerable spaces') are inspected periodically or frequently for gas leaks.

The common method for such inspection work was to have a worker carrying gas inspection equipment carry out the work in a vulnerable space and record the detection value of the inspection equipment at the same time. This method makes continuous and accurate recording difficult because the worker carrying it frequently moves and enters vulnerable spaces. In general, periodic and continuous inspection of vulnerable spaces was accompanied by the preparation of reports according to a preset format. Conventionally, reports were written by workers who completed inspections by hand or through electronic data processing.

Because the preparation of reports relied on human manual work, omissions and/or errors in reports often occurred. Omissions and/or errors in these reports made it difficult to obtain accurate information about the site. As a result, it has become difficult to determine whether there is a gas leak at the site and/or whether site redevelopment is necessary due to it, and as a result, the risk of a gas accident has increased.

Additionally, exposure to harmful gases for a certain period of time can cause various symptoms such as dizziness, disorientation, vomiting, mucous membrane damage, lung damage, and suffocation. Additionally, exposure to harmful gases is as follows: If the worker and the inspector are the same person, if the gas leaks, the inspector is exposed to the harmful gas, and depending on the degree of gas leakage, the internal situation of the vulnerable space is notified and a warning is given against moving inside. and/or were difficult to stop. Additionally, in cases where the inspector briefly left the area outside of the vulnerable space outside of the inspection cycle, it was sometimes difficult to issue a warning and/or restrict access in a timely manner.

Therefore, while work is in progress in a vulnerable space, inspection is carried out continuously, harmful gases are automatically detected and recorded according to the designated inspection cycle, and even if an inspector in a vulnerable space is exposed to harmful gas, the worker is not isolated and is rescued. It was necessary to notify the outside world of the presence of workers so that this could be done.

The problem to be solved by the present invention is to provide a gas inspection and gas inspection site safety management system that can prevent human accidents in gas leak situations.

In addition, the problem to be solved by the present invention is a separate wired and/or wireless external device that is installed on site and can automatically notify the outside of the vulnerable space by sound and visual when a leak of harmful gas is detected. The purpose is to provide a display device.

In addition, the problem to be solved by the present invention is to provide a device that can detect the internal harmful gas condition from the outside by measuring the gas condition in advance before entering a vulnerable space to confirm safety. is to provide.

In addition, the problem to be solved by the present invention is to provide a gas inspection and gas inspection site safety management system that can automatically generate related reports when gas inspection is performed.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The gas inspection and gas inspection site safety management system according to an embodiment of the present invention to solve the above problem detects the target gas present inside the inspection space and provides gas information about the target gas based on the detected information. A portable gas detector that outputs, a server that generates an inspection report related to the target gas using the gas information, and a server disposed outside the inspection space and using the gas information to provide visual information and the gas information associated with the gas information. It includes a gas information output device that outputs related sound information.

The gas information includes type information of the target gas and concentration information of the target gas, and the gas information output unit outputs a natural language corresponding to the type information as the visual information on the screen, and displays the color of the natural language. It can be set differently based on the concentration information.

The gas information includes type information of the target gas and concentration information of the target gas, and the gas information output is a projector that projects an image output based on the type information and the concentration information on an external display surface. may include.

The gas information includes type information of the target gas and concentration information of the target gas, and the gas information output unit compares the concentration of the target gas according to the concentration information with a preset reference value to determine the target gas. If the density is higher than the above standard value, the sound information can be output.

The gas information output device is connected to the portable gas detector by wire to receive the gas information, and the server can receive the gas information through the gas information output device.

The target gas includes a first gas and a second gas, and the portable gas detector is operated at a first temperature to chemically react with the first gas and senses electrical changes due to the chemical reaction with the first gas. It may include a first semiconductor gas sensor and a second semiconductor gas sensor that operates at a second temperature to chemically react with the second gas and senses electrical changes due to the chemical reaction with the second gas.

The portable gas detector has a first mode in which the first semiconductor gas sensor is in the ON state and the second semiconductor gas sensor is in the OFF state, and the first mode in which the semiconductor gas sensor is in the OFF state and the second mode is in the OFF state. The semiconductor gas sensor can provide a second mode in which it is turned on.

The target gas includes volatile organic compounds (VOCs), hydrogen sulfide, ammonia, and combustible gases, and the portable gas detector is used in factory mode used in factories, manhole mode used in areas around manholes, farm mode used in farms, and It provides a fire mode used in a fire occurrence area, and includes a first semiconductor gas sensor that reacts with volatile organic compounds, a second semiconductor gas sensor that reacts with hydrogen sulfide, a third semiconductor gas sensor that reacts with ammonia, and a combustible gas sensor. It includes a fourth semiconductor gas sensor that reacts, and when the factory mode is selected, only the first semiconductor gas sensor is operated, and when the manhole mode is selected, only the second semiconductor gas sensor is operated, and the farm When the mode is selected, only the third semiconductor gas sensor can be operated, and when the fire mode is selected, only the fourth semiconductor gas sensor can be operated.

The portable gas detector includes a plurality of semiconductor gas sensors, and the server may include a gas determination algorithm that determines the type of the target gas based on the sensing values of each of the plurality of semiconductor gas sensors. .

The gas determination algorithm can be learned to determine the type of the target gas based on changes in sensing values over time for each of the plurality of semiconductor gas sensors.

The portable gas detector may further include a main body, a probe head that detects the target gas and outputs the gas information, and a cable connecting the probe head and the main body.

The probe head may include an image acquisition unit that acquires image information of the inspection space.

The portable gas detector is connected to enable wireless communication with a user terminal of a user using the portable gas detector, and outputs connection status information for communication with the user terminal, and the gas information output unit outputs the connection status information. is received, and when the connection status information indicates that communication between the portable gas detector and the user terminal is possible, inspector information indicating that the user exists inside the inspection space can be output.

Other specific details of the invention are included in the detailed description and drawings.

According to embodiments of the present invention, there are at least the following effects.

Real-time information about the space where gas inspection is performed can be obtained from the outside.

A report on gas inspection can be written without omission.

It can be manufactured at a low price using a relatively inexpensive semiconductor gas sensor.

By using an algorithm to distinguish gases, it is possible to distinguish various gases even if a sensor with low gas selectivity is used.

The effects according to the present invention are not limited to the contents exemplified above, and further various effects are included in the present specification.

1 is a diagram for explaining components of a gas inspection and gas inspection site safety management system according to an embodiment of the present invention.
Figure 2 is a block diagram of a gas inspection and gas inspection site safety management system according to an embodiment of the present invention.
Figure 3 is a diagram schematically expressing the use of a portable gas detector and gas information output device according to an embodiment of the present invention.
Figure 4 is a graph recording changes in sensing values of a plurality of semiconductor gas sensors under exposure to ammonia gas.
Figure 5 is a graph recording changes in sensing values of a plurality of semiconductor gas sensors under exposure to methanol gas.
Figure 6 is a graph recording changes in sensing values of a plurality of semiconductor gas sensors under exposure to acetone gas.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

Additionally, embodiments described in this specification will be described with reference to cross-sectional views and/or schematic diagrams that are ideal illustrations of the present invention. Accordingly, the form of the illustration may be modified depending on manufacturing technology and/or tolerance. Additionally, in each drawing shown in the present invention, each component may be shown somewhat enlarged or reduced in consideration of convenience of explanation. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the 'inspection report' referred to may be report data generated according to a specific format. A specific format may mean a format established to meet the standards of the submission destination to which the report is submitted. For example, an inspection report may include information identifying the area where the audit was conducted, information identifying the person who performed the inspection, and information about the gases detected. At this time, the information about the detected gas may include information about the type of the detected gas and the concentration of the gas type. As an example, information about the detected gas may be included in the inspection report in the form of a table in which the measured concentration is classified according to the type of gas.

Hereinafter, the 'user' referred to may be a user who uses a portable gas detector, user terminal, and/or gas information output device. Additionally, a user may refer to a person who uses a server to manage gas inspection and other components of the gas inspection site safety management system according to an embodiment of the present invention, or to monitor the inspection process.

Hereinafter, the 'inspection space' mentioned may refer to a space where gas inspection is performed using a portable gas detector. For example, the inspection space may be a closed space or a space with poor ventilation with the outside air.

Hereinafter, the present invention will be described with reference to drawings for explaining a gas inspection and gas inspection site safety management system according to an embodiment of the present invention.

1 is a diagram for explaining components of a gas inspection and gas inspection site safety management system according to an embodiment of the present invention. Additionally, Figure 2 is a block diagram of a gas inspection and gas inspection site safety management system according to an embodiment of the present invention.

As shown in Figures 1 and 2, the gas inspection and gas inspection site safety management system according to an embodiment of the present invention includes a server (1), a gas information output device (3), a portable gas detector (2), and a user terminal. It can be configured including (4).

The server 1 may be a computing device that receives data from other components of the gas inspection and gas inspection site safety management system according to one embodiment, and records and/or processes the received data.

Additionally, the server 1 can provide an inspection report writing function and a gas type determination function. At this time, the former will be described below, and the latter will be described later.

For the inspection report writing function, the server 1 may include a report writing program that identifies information necessary for writing an inspection report from the received information and generates an inspection report based on this.

The report writing program can receive a draft report written according to a preset format from the user. The report writing program can generate an inspection report by modifying the recorded draft report based on the identified information.

More specifically, the draft report may include spaces for entering inspector information, inspection location information, and gas information.

Inspector information and/or inspection location information may be input into the user terminal 4 and received from the server 1. Gas information can be output from the portable gas detector (2) and received by the server (1).

The server 1 that has received the inspector information, inspection location information, and gas information can fill in the information shown in the received information in the blank spaces of the draft report. For example, a draft report may include a table with fields in which information about the inspector, inspection location, and gas can each be entered.

The report writing program can identify the inspector's identification information (name, employee number, etc.) from the inspector information and enter the identified information in the related field. Additionally, the report writing program can identify the inspection space from the inspection location information and enter the identified information into the related field. Additionally, the report writing program can identify the type and concentration of gas from the gas information and enter them in the respective fields.

The gas information output device 3 may be an information transmission unit placed outside the inspection space so that gas information inside the inspection space can be recognized from the outside. For this purpose, the gas information output device 3 may be configured to include a transmitter/receiver unit 330, a visual information output unit, and a sound information output unit 320.

The transmitting and receiving unit 330 may be configured to transmit and receive data with the server 1 and the portable gas detector 2. For example, the transceiver 330 may be provided to receive examiner information, inspection location information, and gas information from the portable gas detector 2 and transmit them to the server 1. Additionally, the transceiver 330 can receive a control signal for controlling the gas information output device 3 from the server 1.

The visual information output unit may be a component that outputs visual information. This visual information may be related to received gas information or may be related to a control signal of the server 1. More specifically, the visual information output unit may include an electronic signboard 312 and a projector 314 to output visual information in a visual manner.

First, the electronic signboard 312 may be a component that outputs visual information on the screen. This visual information may be related to received gas information or may be related to a control signal from the server 1.

The visual information output on the screen may be pre-recorded in the visual information output unit and loaded upon receipt of matching information. And/or, the visual information output on the screen may be included in the information received from the server 1. And/or, the visual information output unit may include a text information generation program that generates text information based on the received information, and the text information generated by the text information generation program may be displayed on the electronic signboard 312.

Meanwhile, the projector 314 may be a component that outputs visual information on an external display surface. As an example, the projector 314 is configured similarly to a beam projector and can project an image onto an external display surface (wall, floor, etc.).

The image may be pre-recorded in the visual information output unit and loaded upon receipt of matching information. And/or, the image may be included in the information received from the server 1. And/or, the visual information output unit may include an image generation program that generates an image based on the received information, and the projector 314 may project the image generated by the image generation program.

The sound information output unit 320 may be a component that outputs sound information. This sound information may be related to received gas information or may be related to a control signal from the server 1.

The sound information may be pre-recorded in the sound information output unit 320 and loaded upon receipt of matching information. And/or, sound information may be included in the information received from the server 1. And/or, the sound information output unit 320 may include a sound information generation program that generates sound information based on the received information.

The sound information output unit 320 may be configured to output sound information in a way that can be recognized auditorily. To this end, the sound information output unit 320 may include a speaker that outputs sound according to the sound information to the outside.

The portable gas detector 2 may be a sensing unit configured to detect a target gas. Here, target gas may refer to gas aimed at sensing. As an example, the portable gas detector 2 according to this embodiment includes volatile organic compounds (VOCs; first gas), hydrogen sulfide (second gas), ammonia (third gas), and combustible gas (fourth gas). It can be designed to detect target gases. However, this is merely an illustrative list and the present invention is not limited thereto.

Preferably, the portable gas detector 2 can be designed to be easily portable. For example, the portable gas detector 2 may be provided with a handle so that the tester can easily carry it (see FIG. 1).

The portable gas detector 2 may include a main body 200 and a probe head 250.

The main body 200 includes a handle and can be configured to sense the target gas inside the test space while placed in the test space by the user. Although not shown, ventilation holes may be formed in the housing constituting the main body 200 to allow air in the inspection space to be sucked in and discharged. Additionally, a suction unit that suctions external air through a ventilation hole may be disposed inside the main body 200.

Additionally, the main body 200 may be configured to detect a target gas and output gas information based on this. For this purpose, a gas sensor 230 and an information processing unit 240 may be built into the main body 200.

The gas sensor 230 is configured to sense the presence of a target gas in the air of the inspection space introduced into the main body 200. The gas sensor 230 may be configured to include a plurality of semiconductor gas sensors.

A semiconductor gas sensor may be a sensor that detects the presence or absence of a target gas by sensing electrical changes caused by a chemical reaction with the target gas. For example, a semiconductor gas sensor may be provided to sense voltage changes, current changes, electrical conductivity changes, resistance value changes, etc. due to reaction with the target gas and/or adsorption of the target gas.

Additionally, any one semiconductor gas sensor may be set to an operating temperature so that it primarily reacts with a specific gas. At this time, providing gas selectivity to the sensor by setting the operating temperature may utilize the property that the sensitivity to gas of the semiconductor gas sensor varies depending on the operating temperature.

Meanwhile, the gas sensor 230 according to an embodiment of the present invention may include first to fourth semiconductor gas sensors.

For example, a semiconductor gas sensor causes a chemical reaction when gas is exposed to a heated semiconductor contact, and the sensor's output value changes depending on the amount of charge generated. Additionally, the extent of this chemical reaction varies depending on the temperature of the semiconductor contact and the type of gas.

Using these characteristics, the first semiconductor gas sensor can be operated at a first temperature to mainly react with volatile organic compounds (VOCs). Additionally, the second semiconductive gas sensor may be operated at a second temperature to react primarily with hydrogen sulfide. Additionally, the third semiconductor gas sensor may be operated at a third temperature to react primarily with ammonia. Additionally, the fourth semiconductor gas sensor may be operated at a fourth temperature to primarily react with combustible gases.

In addition, it can be operated as a composite gas sensor by combining the output values of the first to fourth types of semiconductor temperature sensors with different contact temperatures. This can be any combination including any one or more of types 1 and 2 or types 1 to 4, and can be operated using a learning algorithm based on data.

The information processing unit 240 may be configured to receive sensed information from the gas sensor 230 and process it into information that can be recognized by the server 1 and/or the gas information output device 3. Specifically, the information processing unit 240 may output gas information using information sensed by the gas sensor 230.

Gas information may include type information and concentration information of the target gas. Each semiconductor gas sensor can transmit its unique identification information and sensing value to the information processing unit 240. The information processing unit 240, which has received the unique identification information and the sensing value, can identify the type of gas based on the unique identification information and determine the concentration based on the sensing value.

For example, when the information processing unit 240 receives unique identification information, it can output the name of the gas that the semiconductor gas sensor matching the unique identification information is set to detect as type information. For example, when the unique identification information matches the first semiconductor gas sensor, the information processing unit may output type information as the name (volatile organic compound) of the first gas.

Additionally, the information processing unit 240 may calculate the concentration of the target gas based on the electrical change value sensed by the semiconductor gas sensor and output concentration information. The calculated concentration information may be transmitted to the server 1 and/or the gas information output device 3 in association with type information.

The input unit 210 is provided in the main body 200 and may be an interface through which various inputs for controlling the portable gas detector 2 are input. For example, the input unit 210 may be formed to allow input for turning on/off the portable gas detector 2, an input for communicating with the server 1, and an input for communicating with the gas information output device 3. You can.

Additionally, the input unit 210 may provide an input for selecting an operating mode of the portable gas detector 2.

Specifically, the portable gas detector 2 according to an embodiment of the present invention can provide a plurality of inspection modes considering the characteristics of the inspection space. As an example, the plurality of inspection modes may include factory mode (first mode), manhole mode (second mode), farm mode (third mode), and/or fire mode (fourth mode).

Factory mode may be a mode with high sensitivity to gases leaking from an environment identical or similar to that of a factory. As an example, factory mode may be a mode targeting volatile organic compounds.

Manhole mode may be a mode with high sensitivity to gas leaking from an environment identical or similar to that around a manhole. As an example, manhole mode may be a mode that targets hydrogen sulfide.

The farm mode may be a mode with high sensitivity to gases leaking from an environment identical or similar to a farm. As an example, farm mode may be a mode targeting ammonia.

The fire mode may be a mode with high sensitivity to gas that requires attention mainly in fire areas. As an example, the fire mode may be a mode targeting combustible gas.

The control unit 220 is built into the main body 200 and may be a processor that controls the portable gas detector 2 according to the input input to the input unit 210. For example, the control unit 220 controls the portable gas detector 2 on/off, controls communication with the server 1, or controls communication with the gas information output device 3 according to the input input through the input unit 210. Communication can be controlled.

Additionally, the control unit 220 may control the first to fourth semiconductor gas sensors on/off according to the operating mode input to the input unit 210.

More specifically, when an input for selecting the factory mode is input to the input unit 210, the control unit 220 controls only the first semiconductor gas sensor to be in the on state (only the first semiconductor gas sensor operates), and the second to The fourth semiconductor gas sensor can be switched to the off state.

Alternatively, when an input for selecting the manhole mode is input to the input unit 210, the control unit 220 controls only the second semiconductor gas sensor to be in the on state (only the second semiconductor gas sensor operates), and the remaining semiconductor gas sensors are operated. can be switched to the off state.

Alternatively, when an input for selecting the farm mode is input to the input unit 210, the control unit 220 controls only the third semiconductor gas sensor to be in the on state (only the third semiconductor gas sensor operates) and other semiconductor gas sensors. can be switched to the off state.

Alternatively, when an input for selecting a fire mode is input to the input unit 210, the control unit 220 controls only the fourth semiconductor gas sensor to be in the on state (only the fourth semiconductor gas sensor operates) and the remaining gas sensors are turned off. state can be switched.

The probe head 250 is connected to the main body 200 and may be a measurement module that inspects an inspection space that is difficult for the main body 200 to enter. For example, if the inspection space itself is narrow, such as inside a manhole, placement of the portable gas detector 2 may be difficult. In this case, the inspector can move the probe head 250 to the inspection space to inspect the presence or absence of the target gas inside the inspection space.

The probe head 250 may be equipped with a separate semiconductor gas sensor (hereinafter referred to as probe gas sensor) for sensing the target gas and a heater unit for changing the operating temperature of the probe gas sensor.

Changes in the operating temperature of the probe gas sensor may be implemented through the input unit 210. To this end, the input unit 210 may be configured to receive an additional temperature setting input that changes the operating temperature of the probe gas sensor. Additionally, the control unit 220 may control the heater unit so that the surrounding temperature of the probe gas sensor corresponds to the temperature according to the temperature setting input.

Meanwhile, the probe head 250 may have a built-in image acquisition unit that acquires image information of the inspection space. Specifically, the image acquisition unit may be configured to image the front area of the probe head 250 and output image information.

Meanwhile, the probe head 250 may be connected to the main body 200 through a cable 253. The cable 253 may be configured to enable winding and unfolding operations. Additionally, the probe head 250 may be connected to the main body 200 through a cable 253 to enable wired communication. Gas information detected by the probe gas sensor and image information by the image acquisition unit may be transmitted to the main body 200 through the cable 253.

Meanwhile, a screen that visually displays gas information and image information may be formed on the main body 200. To this end, the information processing unit 240 can process gas information and image information into information that can be displayed on the screen. As an example, the name of the detected gas and the concentration of the gas may be displayed on the screen. Additionally, real-time images of the inspection space captured by the image acquisition unit may be displayed on the screen.

The user terminal 4 may be an information processing device carried by the examiner. For example, the user terminal 4 may be a smartphone, laptop, personal digital assistant (PDA), etc.

Meanwhile, the user terminal 4 may be connected to the portable gas detector 2, the gas information output device 3, and/or the server 1 to enable wireless communication.

Alternatively, the user terminal 4 is connected to the portable gas detector 2 for wireless communication, the portable gas detector 2 is connected to the gas information output device 3 for communication, and the gas information output device 3 is connected to the server. It can be communicatively connected to (1). Additionally, the user terminal 4 can communicate with the server 1 through the portable gas detector 2 and the gas information output device 3. As an example, the user terminal 4 can communicate with the portable gas detector 2 through Bluetooth, WLAN, etc.

Meanwhile, the portable gas detector 2 periodically transmits a response request to the user terminal 4, and the user terminal 4 can transmit a reply according to the response request to the portable gas detector 2.

If there is a response from the user terminal 4 within a predetermined time after sending a response request, the portable gas detector 2 can output connection status information indicating that the user terminal 4 is in a communication-capable state.

Differently, the portable gas detector 2 may output connection status information indicating that the user terminal 4 is in a non-communicable state if there is no response from the user terminal 4 within a predetermined time after sending a response request.

The portable gas detector 2 transmits the output connection status information to the gas information output device 3, and the gas information output device 3 can output inspector information based on the received connection status information.

At this time, if the portable gas detector 2 and the user terminal 4 can communicate, the gas information output device 3 can output inspector information indicating that the user is inside the inspection space. Differently, when the portable gas detector 2 and the user terminal 4 are unable to communicate, the gas information output device 3 can output inspector information indicating that the user is not present in the inspection space.

Inspector information may be output in a visually recognizable manner by the electronic signboard 312 and/or the projector 314. For example, inspector information may be output in the form of natural language or in the form of a corresponding image.

Therefore, according to the gas inspection and gas inspection site safety management system according to an embodiment of the present invention, even if an accident occurs in which a user loses consciousness in a gas accident situation, the external electronic sign 312 and/or the projector 314 By notifying the user that there is a user inside, it is possible to induce the user to be rescued.

Hereinafter, the use of a gas inspection and gas inspection site safety management system according to an embodiment of the present invention will be described with reference to FIG. 3. Figure 3 is a diagram schematically expressing the use of a portable gas detector and gas information output device according to an embodiment of the present invention. In more detail, FIG. 3 is a diagram schematically showing inspection of an inspection location 5 that is at least partially closed using a portable gas detector 2.

As shown in FIG. 3, the portable gas detector 2 may be placed inside the inspection location 5, and the gas information output device 3 may be placed outside the inspection location 5. At this time, the portable gas detector 2 and the gas information output device 3 can be connected to enable communication through a communication cable 255.

The fact that the portable gas detector (2) and the gas information output device (3) communicate by wire through the communication cable (255) may prevent the transmission of necessary information to the gas information output device (3) due to electromagnetic wave shielding and/or noise. This may have been taken into consideration. At this time, the server 1 does not communicate directly with the portable gas detector 2, but can receive information output by the portable gas detector 2, such as gas information, through the gas information output device 3.

As described above, the gas information output device 3 can output visual information and/or sound information by receiving a control signal from the server 1 and/or gas information from the portable gas detector 2. At this time, in the following description, the text displayed on the screen, the externally projected image (IMG), and the sound output are merely examples to aid understanding, and the present invention is not limited thereto.

More specifically, the control signal of the server 1 may include information to be transmitted to the user, and the electronic sign 312, projector 314, and/or sound information output unit 320 may provide information corresponding to the control signal. Can be printed.

As an example, the electronic signboard 312 can display a message according to a control signal on the screen in natural language. Additionally, the projector 314 may project an image (IMG) according to the control signal to the outside. Additionally, the sound information output unit 320 can output sound according to the control signal to the outside.

In addition, the gas information output device 3 can display the name of the target gas in relation to the concentration on the screen of the electronic signboard 312, based on the type information and concentration information. More specifically, the electronic signboard 312 outputs natural language corresponding to type information on the screen, and can set the color of the text based on density information. For example, if the type information indicates hydrogen sulfide and the concentration information indicates 0.1%, it may be displayed in a form such as “hydrogen sulfide-0.1%”.

Meanwhile, colors according to concentration can be displayed based on the allowable concentration range and dangerous concentration range of the target gas recorded in the gas information output device 3. For example, if the concentration is within the allowable concentration range, it may be displayed in blue, and if it is within the dangerous concentration range, it may be displayed in yellow and/or red.

Additionally, the gas information output device 3 can output an image (IMG) that conveys information about the target gas and its concentration based on the type information and concentration information. This image (IMG) may be projected to the outside by the projector 314.

For example, similar to the case of the electronic signboard 312, an image (IMG) displayed in the form of 'target gas-concentration' may be output and projected to the outside. Alternatively, if the concentration of the target gas is a dangerous concentration, an image (IMG) such as “hydrogen sulfide danger” can be projected to the outside.

Additionally, the gas information output device 3 may output a warning sound through the sound information output unit 320 when the concentration is higher than the upper limit of the allowable concentration range (hereinafter referred to as the standard value). For example, the warning sound may be in the form of "Gas leak, evacuation required" or "Hydrogen sulfide concentration 0.1%", or may be a sound similar to a siren.

Additionally, the gas information output device 3 can display inspector information on the electronic signboard 312 using connection status information. For example, inspector information can be set to always be displayed or to be displayed periodically. For example, the inspector information may be displayed in a manner such as “There is someone inside” or “Mr. Kim is inspecting gas.” At this time, the name of the examiner can be determined by transmitting name information (or examiner information) from the user terminal 4 to the portable gas detector 2 when the user terminal 4 and the portable gas detector 2 are connected through wireless communication. there is. The portable gas detector (2) transmits the name information back to the gas information output device (3), and through this, the gas information output device (3) can determine the name information.

In addition, the gas information output device 3 can output a sound requesting help when the concentration information is greater than the standard value and a user is present inside the inspection space. For example, a call for help may be something like “There is someone inside, please report a gas accident.” In addition, the gas information output device 3 can transmit a message requesting help to the server 1 when the concentration information is greater than the standard value and a user is present inside the inspection space.

Meanwhile, the server 1 may include a gas determination algorithm that determines the type of gas using the sensing values of a plurality of semiconductor gas sensors.

To determine the type of gas, the server 1 may periodically receive gas information from the gas information output device 3. At this time, the gas information may include a sensing value sensed by each of a plurality of semiconductor gas sensors and/or concentration information calculated based on this.

The gas determination algorithm may be an artificial intelligence algorithm learned to determine the type of gas based on changes in sensing values of a plurality of semiconductor gas sensors operating at different temperatures.

When the server 1 receives the sensing value and/or concentration information, it can record it in relation to the time it was received. The gas determination algorithm can determine the type of gas based on changes in recorded sensing values and/or concentration information over time.

Below, with reference to FIGS. 4 to 6, the basis for the judgment of the gas determination algorithm will be described. For convenience of explanation, Figures 4 to 6 will be described first. Figure 4 is a graph recording changes in sensing values of a plurality of semiconductor gas sensors under exposure to ammonia gas. Figure 5 is a graph recording changes in sensing values of a plurality of semiconductor gas sensors under exposure to methanol gas. Figure 6 is a graph recording changes in sensing values of a plurality of semiconductor gas sensors under exposure to acetone gas.

4 to 6 show a semiconductor gas sensor set to have high sensitivity to oxygen gas, a semiconductor gas sensor set to have high sensitivity to carbon monoxide, and a semiconductor gas sensor set to have high sensitivity to hydrogen sulfide, respectively. , it may be a graph recording changes in sensing values and concentrations using a semiconductor gas sensor set to have high sensitivity to volatile organic compounds and a semiconductor gas sensor set to have high sensitivity to combustible gases.

Based on FIGS. 4 to 6, the upper graph may be a graph recording changes in sensing values (voltage changes), and the lower graph may be a graph recording changes in concentration calculated based on the sensing values.

As shown in Figures 4 to 6, when the types of gas are different, the form of the graph by the plurality of semiconductor sensors is completely different. Accordingly, when such sensing values and/or changes in concentration are learned using an artificial intelligence algorithm, it may be possible to determine the type of gas.

Meanwhile, when the gas type determination algorithm determines the type of gas, the server 1 can transmit information on the determined gas (judgment gas information) to the gas information output device 3. The gas information output device 3 can visually announce the determined gas information using the electronic signboard 312 and/or the projector 314. In addition, the gas information output device 3 determines the gas information can be announced audibly using the sound information output unit 320. In addition, the gas information output device 3 can transmit the determined gas information back to the portable gas detector 2, and the portable gas detector 2 can transmit it back to the user terminal 4. When the user terminal 4 receives the determined gas information, it may include an application that notifies the user by displaying the name and concentration of the determined gas on the screen.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

1: Server
2: Portable gas detector
200: main body 210: input unit
220: Control unit 230: Gas sensor
240: Information processing unit 250: Probe head
253: Cable 255: Communication cable
3: Gas information output device
312: electronic sign 314: projector
320: Sound information output unit 330: Transmitter/receiver unit
4: User terminal
5: Inspection location
IMG: image

Claims (13)

A portable gas detector disposed inside the inspection space, detecting a target gas present inside the inspection space, and outputting gas information about the target gas based on the detected information;
a server that generates an inspection report related to the target gas using the gas information; and
It is placed outside, distinct from the inspection space, and is connected to the portable gas detector by wire to receive the gas information so that the gas information can be recognized from the outside, and uses the gas information to detect the time associated with the gas information. A gas inspection and gas inspection site safety management system including a gas information output device that outputs information and sound information associated with the gas information. According to claim 1,
The gas information includes type information of the target gas and concentration information of the target gas,
The gas information output device,
A gas inspection and gas inspection site safety management system that outputs a natural language corresponding to the type information on the screen as the visual information, and sets the color of the natural language differently based on the density information. According to claim 1,
The gas information includes type information of the target gas and concentration information of the target gas,
The gas information output device,
A gas inspection and gas inspection site safety management system including a projector that projects an image output based on the type information and the concentration information onto an external display surface. According to claim 1,
The gas information includes type information of the target gas and concentration information of the target gas,
The gas information output device,
A gas inspection and gas inspection site safety management system that compares the concentration of the target gas according to the concentration information with a preset standard value and outputs the sound information when the concentration of the target gas is higher than the standard value. According to claim 1,
A gas inspection and gas inspection site safety management system in which the server receives the gas information through the gas information output. According to claim 1,
The target gas includes a first gas and a second gas,
The portable gas detector,
a first semiconductor gas sensor that operates at a first temperature to chemically react with the first gas and senses electrical changes due to the chemical reaction with the first gas; and
Gas inspection and gas inspection site safety management, including a second semiconductor gas sensor that operates at a second temperature to chemically react with the second gas and senses electrical changes due to the chemical reaction with the second gas. system. According to clause 6,
The portable gas detector is,
A first mode in which the first semiconductor gas sensor is in an ON state and the second semiconductor gas sensor is in an OFF state,
A gas inspection and gas inspection site safety management system that provides a second mode in which the first semiconductor gas sensor is in an OFF state and the second semiconductor gas sensor is in an ON state. According to claim 1,
The target gases include volatile organic compounds (VOCs), hydrogen sulfide, ammonia, and combustible gases,
The portable gas detector is,
It provides factory mode used in factories, manhole mode used in areas around manholes, farm mode used in farms, and fire mode used in fire areas,
It includes a first semiconductor gas sensor that reacts with volatile organic compounds, a second semiconductor gas sensor that reacts with hydrogen sulfide, a third semiconductor gas sensor that reacts with ammonia, and a fourth semiconductor gas sensor that reacts with combustible gas,
When the factory mode is selected, only the first semiconductor gas sensor operates,
When the manhole mode is selected, only the second semiconductor gas sensor operates,
When the farm mode is selected, only the third semiconductor gas sensor operates,
A gas inspection and gas inspection site safety management system in which only the fourth semiconductor gas sensor is operated when the fire mode is selected. According to claim 1,
The portable gas detector includes a plurality of semiconductor gas sensors,
The server is,
A gas inspection and gas inspection site safety management system including a gas judgment algorithm that determines the type of the target gas based on the sensing values of each of the plurality of semiconductor gas sensors. According to clause 9,
The gas judgment algorithm is,
A gas inspection and gas inspection site safety management system that is learned to determine the type of the target gas based on changes in sensing values over time for each of the plurality of semiconductor gas sensors. According to claim 1,
The portable gas detector,
main body;
A probe head that detects the target gas and outputs the gas information; and
A gas inspection and gas inspection site safety management system further comprising a cable connecting the probe head and the main body. According to claim 11,
The probe head is,
A gas inspection and gas inspection site safety management system comprising: an image acquisition unit that acquires image information of the inspection space. According to claim 1,
The portable gas detector is,
It is connected to enable wireless communication with the user terminal of the user using the portable gas detector, and outputs connection status information for communication with the user terminal,
The gas information output device,
Gas inspection and gas inspection that receives the connection status information and, when the connection status information indicates that communication between the portable gas detector and the user terminal is possible, outputs inspector information indicating that the user exists inside the inspection space. On-site safety management system.

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