KR20200081849A - Emergency broadcasting system linkage type gas detection sensor - Google Patents

Abstract

The present invention relates to a gas detection sensor linked emergency broadcasting system, which installs a plurality of gas detection sensors in the factory, analyzes gas information detected in real time from each gas detection sensor, and sends out a gas generation warning for a location where the gas is generated and an evacuation broadcast for a place which can be safely evacuated in accordance with the location information of an area detected higher than a standard set value to prevent human injury. The gas detection sensor linked emergency broadcasting system comprises: a plurality of gas detection sensor units installed in a certain space to measure and analyze the surrounding gas concentration and transmitting the gas analysis result to the outside including the location of generation; and a plurality of emergency alarm generation units performing an announcement of the location of the generation of the gas and evacuation instructions in accordance with the information received from each gas detection sensor unit.

Description

Emergency broadcasting system with gas detection sensor linkage type gas detection sensor

The present invention relates to an emergency broadcasting system interlocked with a gas detection sensor, and in particular, an emergency broadcasting system interlocked with a gas detection sensor that transmits a gas warning and evacuation broadcast according to the location information of a plurality of gas detection sensors to prevent human injury. It is about.

Hazardous gas leakage accidents are frequently occurring in factories where semiconductor processes are recently performed, and human and property damages have also been followed by such accidents. Since it is difficult for human sensory organs to quickly determine the concentration or type of harmful gas, various sensors for measuring harmful gas are installed in the factory.

However, there are some limitations in the method for detecting the increase in the concentration of harmful gases over a certain level through such a sensor and performing evacuation notification in the factory.

For example, when a hazardous gas leak was detected by a sensor, it was difficult to quickly determine where the gas leaked from the factory, and people inside the factory, which were distributed in multiple layers, generated harmful gas. Even if the location is unknown and an evacuation alert is issued, it is not possible to evacuate to a safe place.

In addition, the conventional emergency broadcasting reproduces the same sound source as a siren, and thus, in a place having a complicated structure, sufficient information for evacuation has not been provided.

The present invention has been devised to solve the above problems, and a plurality of gas detection sensors are installed in the factory, and gas information detected in real time from each gas detection sensor is analyzed to determine the location information of the detected region higher than the reference set value. Accordingly, it is an object of the present invention to provide a gas detection sensor interlocked emergency broadcasting system that prevents human injury by sending an evacuation broadcast to a place where a gas can be safely evacuated and a gas generation warning for a location where a gas has occurred.

The gas detection sensor interlocked emergency broadcasting system according to the present invention for achieving the above object is installed in a certain space to measure and analyze the gas concentration in the vicinity, and transmits the gas analysis results including the generated location to the outside. It characterized in that it comprises a gas detection sensor unit, and a plurality of emergency alarm generating unit for performing a guided broadcast of the gas generation position and evacuation tips in accordance with the information received from each of the gas detection sensor unit.

The gas detection sensor interlocked emergency broadcast system according to an embodiment of the present invention has the following effects.

That is, a number of gas detection sensors are installed in the factory, and gas information detected in real time from each gas detection sensor is analyzed, and gas generation warning and safety of the gas generation location are detected according to the location information of the detected region higher than the reference setting value. It is possible to prevent human damage in advance by sending evacuation broadcasts to places to be evacuated.

1 is a block diagram schematically showing an emergency broadcast system interlocked with a gas detection sensor according to the present invention.
FIG. 2 is a schematic view of a factory in which the gas detection sensor and the emergency alarm generating unit of FIG. 1 are installed.
3 is a block diagram showing the connection relationship between the gas detection sensor unit and the control unit of FIG. 1;
Figure 4 is a table showing the types and exposure standards of the gas concentration is measured in the gas detection sensor linked emergency broadcast system according to the present invention
5 is a view showing a path through which the gas detection sensor units of FIG. 1 perform communication.
Figure 6 is a flow chart for explaining the operation of the gas detection sensor linked emergency broadcast system according to the present invention

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the common knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims. The same reference numerals throughout the specification refer to the same components.

The terminology used herein is for describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein,'comprises' and/or'comprising' refers to the components, steps, operations and/or elements mentioned above, the presence of one or more other components, steps, operations and/or elements. Or do not exclude additions.

1 is a block diagram schematically showing an emergency broadcast system interlocked with a gas detection sensor according to the present invention, and FIG. 2 is a diagram showing a schematic form of a factory in which the gas detection sensor and the emergency alarm generator of FIG. 1 are installed.

In addition, FIG. 3 is a block diagram showing a connection relationship between the gas detection sensor unit and the control unit of FIG. 1.

The gas detection interlocking emergency broadcast system according to the present invention is installed in a certain space, as shown in FIG. 1, measures and analyzes the gas concentration in the surroundings, and detects a number of gases that transmit gas analysis results including the generated location to the outside. It includes a sensor unit 100, and an emergency alert generating unit 200 for conducting announcement of the gas generation location and evacuation tips in accordance with the information received from each of the gas detection sensor unit 100, the gas detection sensor unit 100 includes a gas sensor 110, an analysis unit 120, a display unit 130, an identification unit 140, a communication unit 150, and a power supply unit 160.

Here, the gas sensor 110 is a sensor for measuring the concentration of gas in the surroundings. Looking at the sensing function related to gas concentration measurement, it may include a semiconductor gas detection sensor or an electrochemical gas detection sensor.

The semiconductor-type gas detection sensor can measure gas concentration by using a change in electrical conductivity that occurs when gas particles come into contact with a ceramic semiconductor surface, and the electrochemical sensor is used for oxidation and reduction reactions in which gas particles come into contact with the conductor interface. It is possible to measure the gas concentration through the magnitude of the current generated by it. However, the gas detection sensor is not limited to these methods, and may be configured with various types of gas detection sensors used in the industry.

The types of gas whose concentration is measured by the gas sensor 110 include oxygen, carbon monoxide, hydrogen sulfide, sulfur dioxide, hydrogen, ammonia, chlorine, hydrogen chloride, hydrogen cyanide, ozone, nitrogen monoxide, nitrogen dioxide, hydrogen phosphide, silane, carbon dioxide, hydrocarbon , Butane, and the like.

The analysis unit 120 receives the measured gas concentration from the gas sensor 110 and compares it with a reference set value and outputs the result to the outside.

The display unit 130 receives and displays information about the gas concentration based on the results analyzed through the analysis unit 120.

The identification unit 140 includes unique identification information (ID), and the identification unit 140 transmits identification information to the analysis unit 120 to analyze concentration information measured from the gas sensor 110. The result is sent out together. Therefore, the position where the gas detection sensor unit 100 is installed may be determined by the identification unit 140.

The communication unit 150 is responsible for transmitting information transmitted through the analysis unit 120 to the emergency alert generator 200.

At this time, the communication unit 150 performs communication using RS-422 and RS-485 communication or a LAN composed of a building network. The RS-422 and RS-485 communication is a connection connection method based on the standard of a balanced serial interface, and is used for long-distance communication, and a LAN is used as a communication network bus as a basis.

Here, the communication unit 150 describes RS-422 and RS-485 communication or LAN, but is not limited thereto, and adjacent sensing periods through RF communication, Wi-Fi communication, Bluetooth, and beacon communication. You can also exchange data with each other.

The power supply unit 160 is rechargeable with a lithium-ion battery and serves to supply power required to the gas sensor 110, the analysis unit 120, and the display unit 130.

On the other hand, the power supply unit 160 describes a lithium-ion battery, but is not limited to using commercial power, but also other power sources including a general battery.

When power is supplied from the power supply unit 160 to the gas sensor 110 and the analysis unit 120, the analysis unit 120 reads a previously stored gas concentration set value, that is, a reference set value, and the identification unit 140 Through this, the number of the gas detection sensor unit 100 is recognized.

Meanwhile, a factory where each gas detection sensor unit 100 is installed may be divided into a plurality of sections, as shown in FIG. 2, and the gas detection sensor unit 100 may be installed and operated for each section. Can.

In addition, measurements can be made for different gas types in each section of the plant. Each gas detection sensor unit 100 installed in the factory may perform detection of concentrations for different gas types.

The type of gas whose concentration is to be measured in the factory may be different depending on the process performed in each section in the factory, and each gas detection sensor unit according to the process performed at the installation position of each gas detection sensor unit 100 The types of detection sensors included in (100) may be different.

That is, one gas detection sensor unit 100 may include a plurality of types of detection sensors, and the types of detection sensors included in each gas detection sensor unit 100 are based on the type of gas to be detected at the installed position. It may be different.

On the other hand, a reader (not shown) may be installed between the gas sensor 110 and the analysis unit 120. The reader receives measurement values for gas concentrations from a plurality of gas sensors 110 and the analysis unit. It may serve to transmit to (120).

Here, the reader may receive signals from a plurality of gas sensors through a BLE communication method. In addition, the reader may perform communication with the analysis unit 120 through communication methods such as Wi-fi (Wireless Fidelity), LAN (Local Area Network), and BLE.

The analyzer 120 may serve to analyze the gas concentration received from the gas sensor 110. The analysis unit 120 may perform communication with the gas sensor 110 installed adjacent to the reader.

The analysis unit 120 is equipped with a memory (not shown), and stores the gas concentration measured from the gas sensor 110. At this time, the memory is composed of a non-volatile memory so that the previously stored value is not forgotten even when the power is turned off and then on again.

In FIG. 3, the control unit may collectively perform safety management in the factory through analysis of measured values of gas concentrations detected by the respective gas detection sensor units 100.

Basically, the control unit may perform an evacuation order in the factory when the measured value of a specific gas concentration is out of the reference range by comparing the reference range set for each gas type with the measured value. In this case, the control unit determines whether the measured value of the gas concentration outside the reference range from the gas detection sensor unit 100 configured at any one specific location is different from the gas detection sensor unit 100 installed at another location, An evacuation command may be performed on at least a part of a section in which the corresponding gas detection sensor unit 100 is disposed.

The control unit may manage a reference range for each gas type. For example, the oxygen concentration in the factory may be set as a reference range between 19.5% and 23.5%, and the reference range for harmful gas concentration may be set as TWA, STEL, or the like. Time-weighted average (TWA) is a time-weighted average exposure standard, and refers to a value divided by 8 hours by multiplying the generated time by the measured value of harmful gas based on 8-hour work per day, and short term exposure limit (STEL) is short-term exposure As a standard, when a worker is exposed to hazardous gas for 15 minutes at a time, below this standard means that exposure can be allowed up to 4 times during a working day of 1 day if the exposure interval is 1 hour or more.

For example, TWA for hydrochloric acid in the factory may be set to 1 ppm, and STEL may be set to 2 ppm. In this case, the worker in the factory where the system is operated can work for 8 hours in an environment where the concentration of hydrochloric acid is 1 ppm or less, and when the concentration of hydrochloric acid increases to 2 ppm, it can work only within 15 minutes.

On the other hand, the emergency alarm generating unit 200 is disposed at regular intervals on each floor of the factory so that workers can listen to the alarm broadcast smoothly and promptly evacuate to a section that does not generate gas according to the broadcast. Make it possible to evacuate.

For example, when 10, 11, and 12 of the gas detection sensor units 100 installed on each floor of the factory are detected to be higher than the detected gas concentration compared to the gas detection sensors of other floors, gas is detected on the second floor, which is the detection area information. By conducting an announcement through the emergency alert generator 200 that a leak has occurred, evacuating to a stable area excluding the current detection area by guiding the evacuated floor to people living on each floor, thereby avoiding human damage. It can be prevented.

In addition, since gas detection on the first floor is limited in the amount of space that can be evacuated to the first basement or second basement, gas detection broadcasts and evacuation tips including detection area information are included in the first and second basement floors. Broadcast.

In the embodiment of the present invention, the emergency alert generator 200 selectively broadcasts to each floor, because people who live in the factory when evacuating broadcast through the emergency alert generator 200 at the same time This is to prevent secondary accidents that may occur in one place at the same time.

On the other hand, the emergency alarm generating unit 200 is generally gas is heavier than air and can move downwards, and according to the environment of the factory, it can be transmitted to the upper floor by wind, so gas is broadcast to the detection area and the underground area directly above it. .

In addition, in the embodiment of the present invention, although it is described that the announcement is conducted through the emergency alert generator 200, the present invention is not limited thereto, and the evacuation guidance light (not shown) is provided in addition to the announcement of the emergency alert generator 200. You can guide the evacuation direction in conjunction with. That is, when a fire occurs in the state of blasting due to the leakage of toxic gas and it is difficult to secure a view by smoke, it is possible to guide the evacuation direction to the evacuee through evacuation guidance.

4 is a table showing the types and exposure standards of the gas concentration is measured in the gas detection sensor interlocked emergency broadcast system according to the present invention.

Referring to FIG. 4, gases that can be detected by the gas detection sensor units 100 of the present invention may be classified into a combustible gas, a toxic gas, or a pyrophoric gas, and the types of gases belonging to each category Can vary as indicated in the table. In addition, the gas detection sensor unit 100 may detect concentrations of oxygen and the like, not harmful gases.

Each gas sensor detection unit 100 can detect the measured value of the gas concentration in parts per million (ppm), and the measured value is transmitted to the analysis unit 120 so that the concentration of the corresponding gas is TWA, STEL It can be used to analyze whether it meets the safety standards.

4 shows the TWA and STEL standards for each gas type, and the short-time exposure standard STEL may be set higher than the time-weighted average exposure standard TWA. In addition, if short-term exposure is a gas that can cause fatal damage to workers in the factory, STEL, a short-term exposure standard, may not be set.

FIG. 5 is a diagram illustrating a path through which the gas detection sensor units of FIG. 1 perform communication.

Referring to FIG. 5, a plurality of gas detection sensor units 100 may be installed at a predetermined distance within a factory. According to an embodiment of the present invention, the gas detection sensor units 100 may communicate with each other through a BLE communication method. The distance at which one gas detection sensor unit 100 can perform wireless communication is It may be limited by the performance of the gas detection sensor unit 100. Since the BLE communication method is a communication method developed to save power, accordingly, the distance in which the gas detection sensor unit 100 can perform communication may be limited to a shorter distance than when using the existing Bluetooth communication method.

As shown in FIG. 5, one gas detection sensor unit 100 can directly communicate with the gas detection sensor units 100 located within a certain distance therefrom, and the gas detection sensor unit located outside the predetermined distance ( Communication may be indirectly via gas detection sensor units 100 different from 100).

In this way, by arranging the positions of the gas detection sensor units 100 so as to form a mesh network in which the communication paths of the plurality of gas detection sensor units 100 are configured like a net, they are placed in all regions in the factory. The signal transmitted from the gas detection sensor units 100 may reach the analysis unit 120.

6 is a flow chart for explaining the operation of the gas detection sensor linked emergency broadcast system according to the present invention.

As illustrated in FIG. 6, the gas detection sensor interlocked emergency broadcast system according to the present invention starts gas detection by applying power to each gas detection sensor unit installed at regular intervals in the factory (S110 ).

Subsequently, when power is applied to the gas detection sensor unit, a reference setting value and a number of the sensor unit are read (S120 ).

Here, if the stored reference set value is not between 1000ppm and 4000ppm, it is regarded as having an error in the stored reference set value and outputs a communication requesting the reference set value to the gas sensor controller or computer to store the reference set value again. . As described above, errors in measurement of gas concentration can be minimized by checking whether there is an abnormality in the reference value.

Subsequently, the surrounding gas concentration is detected and transmitted in real time from the gas detection sensor unit (S130).

Subsequently, the gas concentration measurement value detected from the gas detection sensor unit is received and calculated by comparing it with a reference set value (S140).

At this time, when the measured value and the reference set value are higher than the detected value according to the calculated result, gas concentration and gas leaked area information are transmitted to the outside (S150), and if the measured value is lower than the reference set value, the gas continues The detection sensor unit measures gas information.

On the other hand, if it is higher than the measured value and the reference set value detected according to the calculated result, the display unit displays the current measured value and the gas unit ID through communication.

As illustrated in FIG. 6, when the reference set value of the gas that is read while the power is applied to the gas detection sensor unit 100 is different from the previously set reference value, for example, a preset reference set value based on carbon dioxide. This is a value between 1000ppm and 4000ppm. If the lead reference set value is outside the range of the pre-set reference set value, it is regarded as having an error in the reference set value and performs communication requesting the reference set value from the gas sensor control unit or computer. The reference setting value is reset by the control unit again to store the reference setting value.

As described above, errors in measurement of gas concentration can be minimized by checking whether there is an abnormality in the reference value.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can implement the present invention in other specific forms without changing its technical spirit or essential features. You will understand that there is. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: gas detection sensor unit 110: gas sensor
120: analysis unit 130: display unit
140: identification unit 150: communication unit
160: power supply unit 200: emergency neck generating unit

Claims (7)

A plurality of gas detection sensor units installed in a certain space to measure and analyze the gas concentration in the surroundings and deliver the gas analysis results to the outside, including the location of occurrence,
Gas detection sensor interlocked emergency broadcast system comprising a plurality of emergency alarm generating unit for performing the announcement of the gas generation location and evacuation tips in accordance with the information received from each of the gas detection sensor unit. The method of claim 1, wherein the gas detection sensor unit
Gas sensor for measuring the concentration of the surrounding gas,
An analysis unit receiving the measured value of the gas concentration from the gas sensor and comparing it with a reference set value;
And a display unit for displaying information on the gas concentration based on the results analyzed through the analysis unit,
An identification unit for transmitting a unique ID for the gas sensor by the analysis unit,
And a communication unit for transmitting the gas concentration information and location transmitted to the analysis unit to the emergency alert generating unit,
Gas detection sensor interlocked emergency broadcast system comprising a power supply for supplying power to the gas sensor, the analysis unit, the display unit and the communication unit. The method of claim 1, wherein the gas is any one of oxygen, carbon monoxide, hydrogen sulfide, sulfur dioxide, hydrogen, ammonia, chlorine, hydrogen chloride, hydrogen cyanide, ozone, nitrogen monoxide, nitrogen dioxide, hydrogen phosphide, silane, carbon dioxide, hydrocarbon, butane Gas detection sensor interlocked emergency broadcasting system. The emergency detection system according to claim 1, wherein the plurality of emergency alarm generators sequentially broadcast. According to claim 2, The communication unit RS-422 and RS-485 communication or gas detection sensor interlocked emergency broadcast system characterized in that the communication using a LAN consisting of a building network. The emergency broadcasting system according to claim 2, wherein the analysis unit is equipped with a non-volatile memory to store the gas concentration measured from the gas sensor. According to claim 1, Emergency detection system linked to the gas detection sensor, characterized in that to guide the evacuation direction in conjunction with the evacuation guidance light in addition to the announcement of the emergency alarm generating unit.

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