Gas detection system, information management device, and control method and program thereof

Abstract

To provide a gas detection system that identifies a location where a gas detector is used, thereby encouraging response to situations unique to the location of use.SOLUTION: A gas detection system identifies manholes located near a gas detector based on current location information obtained by location information acquisition means provided in the gas detector and the current location information stored in storage means provided in an information management device (step S120), extracts manhole information about the manholes from the storage means (step S130), and displays the manhole information on display means installed in the gas detector to alert a user of the manhole information about the manholes located near the gas detector, thereby reducing the possibility of an accident.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a gas detection system, an information management device, and a control method and program therefor. [Background technology]

[0002] Conventionally, a portable gas alarm transmitter that detects gas concentration using a gas sensor and issues an alarm, and a gas abnormality detection system using the same are known. For example, Patent Document 1 describes a gas abnormality detection system that has a portable gas detector that detects gas concentration and issues an alarm, and a communication mobile terminal to which the gas detector is connected via a connection means and receives the alarm and sends it out as a wireless signal, and that issues an alarm when the gas concentration exceeds a predetermined level when the connection means is not connected, and automatically returns to the original level when the connection means is connected and the gas concentration exceeds the predetermined level, and continues to issue an alarm and self-maintains. In this gas abnormality detection system, when an alarm is issued when the gas concentration exceeds a predetermined level while the gas detector and the communication mobile terminal are connected, the communication mobile terminal continues to issue an alarm to the outside by a wireless signal and this is self-maintained, so that a third party can be continuously notified of the danger, and the third party's help can be easily obtained, ensuring the safety of the operator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-92770 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, although the gas anomaly detection system described in Patent Document 1 can detect anomalies, the determination of whether or not an abnormal state exists may depend on the environment. For example, when detecting gas in a manhole, if an abnormality has been detected in the past, it is known that there is a high possibility that a similar abnormality will occur. However, the gas anomaly detection system described in Patent Document 1 has a problem in that it cannot respond to such site-specific conditions.

[0005] The present invention has been made in consideration of these problems, and has as its main object to provide a gas detection system that is capable of prompting a response to a situation specific to the place of use by identifying the place where the gas detector is used. Another object is to provide a control method and program for the gas detection system that is capable of prompting a response to a situation specific to the place of use. [Means for solving the problem]

[0006] In order to achieve at least one of the above objects, the present invention employs the following means.

[0007] The gas detection system of the present invention comprises: a gas detector including: a gas detection means for detecting a gas; a position information acquisition means for acquiring position information and outputting information relating to a current position as current position information; and a first transmission / reception means for transmitting information including the current position information; an information management device having a second transmitting / receiving means for transmitting and receiving information including the current location information transmitted from the first transmitting / receiving means, and a manhole identifying means for identifying a manhole located near a gas detector based on the current location information; The purpose of this is to provide It is something.

[0008] In this gas detection system, a position information acquisition means provided in the gas detector acquires information relating to the current position of the gas detector as current position information, and transmits the current position information to an information management device via a first transmission / reception means. When the information management device receives the current position information via a second transmission / reception means, a manhole identification means identifies a manhole located near the gas detector based on the current position information. In this way, a manhole near the current position of the gas detector can be identified, and if information about this manhole has been accumulated, information about the manhole can be acquired.

[0009] The information management device of the present invention comprises: a manhole identification means for receiving information including current position information, which is information regarding the current position of a gas detector having a gas detection means for detecting gas, a position information acquisition means for acquiring position information and outputting information regarding the current position as current position information, and a first transmission / reception means for transmitting information including the current position information, and for identifying a manhole located near the gas detector based on the current position information; The purpose of this is to provide It is something.

[0010] When this information management device receives current location information, which is information about the current location of the gas detector, the manhole identification means identifies a manhole located near the gas detector based on the current location information. In this way, it is possible to identify a manhole near the current location of the gas detector, and if information about this manhole has been accumulated, it is possible to obtain the information about the manhole.

[0011] In the gas detection system of the present invention, the information management device may have a storage means for storing manhole information, which is information related to a manhole, and the manhole identification means may identify the manhole based on the current location information and transmit at least a part of the manhole information to the gas detector. In this way, a manhole near the gas detector can be identified based on the manhole location information stored in the manhole information storage means and the current location information, and information related to the manhole can be transmitted. If the manhole information includes, for example, abnormality detection information indicating that an abnormality in gas concentration was detected in a past gas detection, a warning can be issued based on the abnormality detection information to alert the user and reduce the possibility of an accident occurring.

[0012] In the gas detection system of the present invention, the current location information and the manhole information may include latitude and longitude information, which is information related to latitude and longitude, and the manhole identification means may compare the latitude and longitude information included in the current location information with the latitude and longitude information included in the manhole information, and identify a manhole located near the gas detector as a manhole stored in the manhole information when the latitude and longitude information included in the current location information is within a predetermined range from the latitude and longitude information included in the manhole information. In this way, a manhole near the gas detector can be identified based on the latitude and longitude information of the manhole stored in the manhole information storage means and the latitude and longitude information included in the current location information, and information about the manhole can be transmitted. If the manhole information includes, for example, abnormality detection information indicating that an abnormality in gas concentration was detected in a past gas detection, a warning can be issued based on the abnormality detection information to alert the user and reduce the possibility of an accident occurring.

[0013] In the gas detection system of the present invention, the gas detector may have a reporting means for reporting the manhole information when the manhole information is received from the information management device. In this way, information about the manhole can be reported, and if the manhole information includes, for example, abnormality detection information indicating that an abnormality in gas concentration was detected in a past gas detection, the abnormality detection information can be reported to alert the user and reduce the possibility of an accident occurring.

[0014] In the gas detection system of the present invention, the manhole information may be information including abnormality detection information indicating that the gas detection means has detected an abnormality. By doing so, if the manhole information includes abnormality detection information indicating that an abnormality in gas concentration was detected in a past gas detection, the abnormality detection information can be notified to alert the user and reduce the possibility of an accident occurring.

[0015] The gas detection system of the present invention employing this aspect may further comprise a warning means for issuing a warning when the gas detector detects a gas and the concentration of the gas is equal to or higher than a predetermined concentration, the predetermined concentration being determined based on the presence or absence of the abnormality detection information. In this way, if there is an abnormality in the concentration of the gas detected by the gas detector, a warning can be issued to the user. At this time, since it is empirically known that a similar abnormality is likely to occur in a location where an abnormality has occurred in the past, if there is abnormality detection information indicating a location where an abnormality has occurred in the past, the gas concentration for issuing a warning can be changed to alert the user and reduce the possibility of an accident occurring.

[0016] The method for controlling an information management device of the present invention includes the steps of: A control method for an information management device comprising: gas detection means for detecting gas; position information acquisition means for acquiring position information and outputting information relating to a current position as current position information; and first transmission / reception means for transmitting information including the current position information; and manhole identification means for receiving information including current position information which is information relating to a current position of a gas detector having the gas detector, and identifying a manhole located near the gas detector based on the current position information, an information receiving step of receiving information including the current location information; a manhole identifying step of identifying a manhole located near the gas detector based on the position information received in the information receiving step; The purpose is to include It is something.

[0017] In the control method of this information management device, a location information acquisition means provided in the gas detector acquires information relating to the current location of the gas detector as current location information, and transmits the current location information to the information management device via the first transmission / reception means. When the information management device receives the current location information via the second transmission / reception means, a manhole identification means identifies a manhole located near the gas detector based on the current location information. In this way, a manhole near the current location of the gas detector can be identified, and if information about this manhole has been accumulated, information about the manhole can be acquired.

[0018] The program of the present invention is a program for causing one or more computers to execute each step of the control method of the information management device. This program may be recorded in a computer-readable storage medium (e.g., a hard disk, a ROM, a CD, a DVD, a flash memory, etc.), may be transmitted from one computer to another computer via a transmission medium (a communication network such as the Internet or a wired / wireless LAN), or may be transmitted in any other form. In addition, even if it is executed by a device that executes each step of the control method, the device on which the program is executed and the device on which the processing is performed may be different. In either case, by executing this program on one computer or by having multiple computers share and execute each step, it is possible to obtain the same effect as the above-mentioned control method. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is an explanatory diagram showing an outline of the configuration of a gas detection system 20. As shown in FIG. [Diagram 2] FIG. 2 is a block diagram for explaining the electrical connections of gas detection system 20. As shown in FIG. [Diagram 3] FIG. 3 is an explanatory diagram showing an example of the manhole information table 46. [Figure 4] FIG. 4 is a flowchart showing an example of a manhole information extraction processing routine. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Next, the gas detection system 20 will be described in detail as an example of an embodiment of the present invention. The embodiments and drawings described below are intended to illustrate a part of the embodiment of the present invention, and are not intended to limit the present invention to these configurations. Appropriate modifications can be made without departing from the spirit of the present invention. In addition, the same or similar reference numerals are used to designate corresponding components in each drawing. In addition, an example of a method for controlling the gas detection system 20 will be shown to clarify an example of a method for controlling the gas detection system of the present invention.

[0021] In a gas detection system 20 according to an embodiment of the present invention, as shown in FIG. 1, a plurality of gas detectors 30 that detect a plurality of types of gases are electrically connected to an information management device 40 via an electric communication network 10, and information about the gas detected by the gas detector 30 and information about the current location of the gas detector 30 are transmitted to the information management device 40 via the electric communication network 10. When the information management device 40 receives the current location information of the gas detector 30, it identifies a manhole near the gas detector 30 based on the current location information of the gas detector 30, and transmits information about the manhole to the gas detector 30. At this time, the gas detector 30 is provided with a display means 36 (see FIG. 2) that displays information about the manhole, so that the user of the gas detector 30 can be notified of the information about the manhole.

[0022] As shown in FIG. 2, the gas detector 30 includes a gas detection means 32 that detects various gases and outputs information about the gas, a position information acquisition means 34 that acquires current position information, which is information about the current position, a display means 36 that displays various information including manhole information transmitted from the information management device 40, and a first transmission / reception means 38 that transmits information about the gas and current position information to the information management device 40 and receives information about the manhole. In this way, the gas detection means 32 can transmit information about the gas detected by the gas detection means 32 and information about the current position to the information management device 40. On the other hand, when the information management device 40 receives information about the current position of the gas detector 30, it extracts information about a manhole located near the current position of the gas detector 30 based on the manhole information stored in the storage means 44 provided in the information management device 40 and transmits it to the gas detector 30. In this way, the user of the gas detector 30 can obtain information about a manhole near the current position. Note that the information about the manhole here means information including current position information including latitude and longitude information indicating the position of the manhole and abnormality detection information indicating that an abnormality has been detected in the manhole in the past.

[0023] The gas detection means 32 is a known gas detection sensor, for example, a sensor that detects the gas concentrations of oxygen, combustible gas, carbon monoxide, and hydrogen sulfide, as well as temperature and humidity. This gas detection means 32 detects the concentrations, temperature, and humidity of these gases, etc., and outputs them as information related to the gas. The gas information output from the gas detection means 32 is notified to the user by displaying it on the display means 36, and is also transmitted to and stored in the information management device 40 via the first transmission / reception means 38. In this way, the gas information can be notified to the user, and the information can be stored in the information management device 40.

[0024] The position information acquisition means 34 is a known position information acquisition means, for example, a position information acquisition means using a global positioning system (GPS). This position information acquisition means 34 acquires information about the current position based on information received from a GPS satellite, and outputs the information as current position information including latitude and longitude information. In this way, the information management device 40 can identify a manhole close to the current position based on the current position information.

[0025] The display means 36 is a known display means corresponding to the notification means and warning means of the present invention, for example, a liquid crystal display. The display means 36 can notify the user of information by displaying various information including information on gas output from the gas detection means 32, manhole information which is information on the manhole received from the information management device 40 via the first transmission / reception means 38, and information on the concentration of the detected gas, or by displaying a warning based on the concentration of the gas.

[0026] Here, the warning display based on the gas concentration will be described in detail. When the concentration of gas or the like detected by the gas detection means 32 is equal to or higher than a predetermined concentration, the display means 36 displays information to alert the user, such as "Caution" or "Caution for heat stroke." Specifically, for example, when the gas detection means 32 detects a concentration of hydrogen sulfide gas equal to or higher than a predetermined value, the display means 36 displays "Caution for hydrogen sulfide gas poisoning." In this way, the user is notified of the danger.

[0027] In addition, the predetermined value as a criterion displayed on the display means 36 is changed to a second value when the information on the manhole received from the information management device 40 includes abnormality detection information, and when the concentration of gas or the like detected by the gas detection means 32 is equal to or greater than the second value or less, information calling attention to the user is displayed. Specifically, for example, when manhole information including hydrogen sulfide warning information is received from the information management device 40, if the hydrogen sulfide concentration detected by the gas detection means 32 is equal to or greater than the second value, "Caution: Hydrogen sulfide gas poisoning" is displayed. When hydrogen sulfide warning information is included in the manhole information, it means that an abnormality related to hydrogen sulfide has been confirmed in the past in the manhole currently being inspected, and in such cases, the same abnormality is often confirmed empirically, so that the possibility of an accident occurring can be reduced in advance by setting the warning criterion to a value stricter (lower concentration) than the predetermined value. Note that, although the case of hydrogen sulfide has been described here as an example, the same applies to the concentration of oxygen, carbon monoxide, and flammable gas. The predetermined value here is, for example, a concentration indicating a safety standard set forth in the Industrial Safety and Health Act, etc., and is a standard that requires an immediate warning if this standard is exceeded. For example, the oxygen concentration can be 18%, the hydrogen sulfide concentration can be 10 ppm, the carbon monoxide concentration can be 50 ppm, and the combustible gas can be 30% LEL. On the other hand, the second value is a value stricter than the predetermined value, and for example, the oxygen concentration can be 16%, the hydrogen sulfide concentration can be 5 ppm, the carbon monoxide concentration can be 40 ppm, and the combustible gas can be 25% LEL.

[0028] The information management device 40 is a known computer that includes a second transmission / reception means 42 for transmitting and receiving information about gas transmitted from the gas detector 30, information about the current location of the gas detector 30, and the like, a storage means 44 for storing information about manholes, and a control means 50 for extracting manhole information near the gas detector 30 based on the current location information of the gas detector 30 received by the second transmission / reception means 42, and controlling the information management device 40. When the information management device 40 receives the current location information of the gas detector 30 from the gas detector 30 via the second transmission / reception means 42, the control means 50 identifies a manhole located near the gas detector 30 from the storage means 44, obtains information about the manhole, and transmits the manhole information to the gas detector 30. In this way, information about manholes located near the gas detector 30 can be notified to the user of the gas detector 30.

[0029] The storage means 44 is a known storage means, for example, a known magnetic disk such as a hard disk drive, or a flash memory such as a solid state drive. As shown in Fig. 3, the storage means 44 has a manhole information table 46 that stores manhole position information and past manhole information (for example, accident information, information on gas concentrations measured in the past, and abnormality detection information indicating that the gas concentration was abnormal) in association with each other, and stores this information in each column. Specifically, there are provided a coordinate information column in which latitude and longitude information indicating the position of the manhole is stored, an oxygen warning column in which oxygen abnormality detection information which is information regarding the presence or absence of oxygen warning information meaning that the oxygen concentration detected by the gas detector is lower than the standard value is stored, a hydrogen sulfide warning column in which hydrogen sulfide abnormality detection information which is information regarding the presence or absence of hydrogen sulfide warning information meaning that the hydrogen sulfide concentration detected by the gas detector is lower than the standard value is stored, a carbon monoxide warning column in which carbon monoxide abnormality detection information which is information regarding the presence or absence of carbon monoxide warning information meaning that the carbon monoxide concentration detected by the gas detector is lower than the standard value is stored, a combustible gas warning column in which combustible gas abnormality detection information which is information regarding the presence or absence of combustible gas warning information meaning that the combustible gas concentration detected by the gas detector is lower than the standard value is stored, and a heat stroke warning column in which temperature and humidity abnormality detection information which is information regarding the presence or absence of heat stroke warning information meaning that the temperature and humidity detected by the gas detector are lower than the standard values ​​is stored. The manhole position information and past information about the manhole are stored in association with each other in the manhole information table 46. In this way, the location information of the manhole can be stored in association with past information about the manhole, so that by identifying the location of the manhole, information about the identified manhole can be extracted.

[0030] The control means 50 corresponds to the manhole identification means of the present invention. As shown in Fig. 2, the control means 50 is configured as a microprocessor centered on a CPU 51, and includes a ROM 52 in which various programs including a manhole information extraction processing routine for extracting manhole information from the storage means 44 and various control programs for controlling the information management device 40 are stored, a RAM 53 in which various information transmitted from the gas detector 30 is temporarily stored, and an interface 54 (hereinafter referred to as "I / F 54") for transmitting and receiving various signals between the second transmitting / receiving means 42, the storage means 44, etc. are electrically connected via a bus 55. The control means 50 extracts information about a manhole located near the gas detector 30 based on the current position information of the gas detector 30 output from the gas detector 30, and transmits the information to the gas detector 30.

[0031] Next, an operation for extracting information about a manhole located near gas detector 30 will be described using an example of a manhole information extraction processing routine executed by control means 50. This manhole information extraction processing routine is repeatedly executed when current location information of gas detector 30 is received from gas detector 30, and transmits information about the manhole to display means 36 provided in gas detector 30. Note that FIG. 4 is a flow chart showing an example of the manhole information extraction processing routine.

[0032] When a power button (not shown) provided on the gas detector 30 is pressed, power is supplied to the gas detector 30 from a battery (not shown). The power supplied to the gas detector 30 is supplied to a position information acquisition means 34, which acquires latitude and longitude information relating to the current position of the gas detector 30 using a global positioning satellite system (GPS). The power supplied to the gas detector 30 is also supplied to the gas detection means 32, which measures the oxygen concentration, hydrogen sulfide concentration, carbon monoxide concentration, combustible gas concentration, temperature, and humidity to acquire information relating to the gas. This current position information and information relating to the gas are transmitted to the information management device 40 via a first transmission / reception means 38.

[0033] When the CPU 51 provided in the control means 50 of the information management device 40 receives the current location information and the information on the gas from the gas detector 30 (step S110), it temporarily stores the current location information and the information on the gas in the RAM 53. Then, it determines whether or not the latitude and longitude information corresponding to the latitude and longitude information included in the current location information temporarily stored in the RAM 53 is stored in the storage means 44 (step S120), and if it is determined that the information is not stored in the storage means 44, it ends this routine. Specifically, it determines whether or not the latitude and longitude information that is the same as the latitude and longitude information temporarily stored in the RAM 53 or that is included within a predetermined range (for example, within a range of plus or minus 5) is stored in the coordinate information column of the manhole information table 46, and if there is no corresponding latitude and longitude information in the coordinate information column, it determines that the corresponding latitude and longitude information is not stored in the storage means 44.

[0034] On the other hand, when the CPU 51 determines that the coordinate information corresponding to the coordinate information included in the current position information is stored in the storage means 44, it reads out the manhole information from the storage means 44 (step S130). Specifically, when the oxygen warning information, hydrogen sulfide warning information, carbon monoxide warning information, flammable gas warning information, and heat stroke warning information corresponding to the coordinate information in the coordinate column of the manhole information table 46 is stored, the information is read out as manhole information including each of the information as abnormality detection information.

[0035] Next, CPU 51 transmits the manhole information read in step S130 to gas detector 30 (step S140), and ends this routine. The manhole information transmitted to gas detector 30 is displayed by display means 36, so that the user can obtain information about the manhole located at the current position.

[0036] Next, the operation when storing information about a manhole in the storage means 44, particularly the operation when storing the position information of the manhole, will be described. Information about the position information of the manhole is extracted, for example, from coordinate information contained in map data provided by a local government or the like, and stored in the storage means 44. At this time, if the map data provided by the local government or the like is data stored in a plane rectangular coordinate system, it is converted to a latitude / longitude coordinate system and stored in the position information column of the manhole information table 46 included in the storage means 44. In the case of a plane rectangular coordinate system, since there are multiple reference points, by converting to a latitude / longitude coordinate system, the coordinates of the manhole can be specified regardless of the coordinates of any location in Japan.

[0037] Next, the manhole information is stored in a past information column corresponding to the position information column of the manhole information table 46. Specifically, information on accidents that have occurred in the same manhole in the past, information that may lead to accidents, and various information transmitted from the gas detector 30 are stored. Specifically, abnormality detection information and measurement values ​​of oxygen, hydrogen sulfide, nitrogen monoxide, and combustible gases, abnormality detection information and measurement values ​​of temperature and humidity, and other accident information obtained when the gas detector 30 detects gas are stored. In this way, by storing the manhole position coordinates and manhole information in association with each other in the manhole information table 46, past information can be easily referred to, and accidents can be prevented.

[0038] According to the gas detection system 20 of the embodiment described above in detail, a manhole located near the gas detector 30 is identified based on the current location information acquired by the location information acquisition means 34 provided in the gas detector 30 and the current location information stored in the storage means 44 provided in the information management device 40, and manhole information relating to this manhole is extracted from the storage means 44 and displayed on the display means 36 provided in the gas detector 30. In this way, the manhole information of a manhole located near the gas detector 30 is notified to alert the user, thereby making it possible to reduce the possibility of an accident occurring.

[0039] Furthermore, in step S120, by determining whether latitude and longitude information that is the same as or falls within a specified range as the latitude and longitude information temporarily stored in RAM 53 is stored in the coordinate information column of the manhole information table 46, a manhole near the gas detector 30 is identified based on the latitude and longitude information, and the manhole information associated with this manhole is notified to alert the user and reduce the possibility of an accident occurring.

[0040] Furthermore, since the gas detector 30 is provided with a display means 36, manhole information can be displayed on the display means 36 to convey the manhole information to the user, thereby drawing the user's attention and reducing the possibility of an accident occurring.

[0041] Furthermore, since the information stored in the manhole information table 46 of the memory means 44 includes oxygen warning information, hydrogen sulfide warning information, carbon monoxide warning information, and flammable gas warning information, which are stored in association with the coordinate information of the manhole as abnormality detection information, if the abnormality detection information indicating that an abnormality in gas concentration has been detected in a past gas detection is included, the abnormality can be reported to alert the user and reduce the possibility of an accident occurring.

[0042] This display means 36 displays information calling attention when the concentration of gas, etc. detected by the gas detection means 32 is above or below a predetermined value, but if the information about the manhole received from the information management device 40 includes abnormality detection information, the predetermined value is changed to a second value, and information calling attention to the user is displayed when the concentration of gas, etc. detected by the gas detection means 32 is above or below the second value. When an abnormality has been detected in the past, it is often the case that the same abnormality is confirmed empirically, so by setting the warning standard to a value stricter than the predetermined value (lower concentration), it is possible to call attention to the user and reduce the possibility of an accident occurring.

[0043] It goes without saying that the present invention is not limited to the above-described embodiment, and can be embodied in various forms within the technical scope of the present invention.

[0044] For example, in the above-described embodiment, the gas detection means 32 is a known gas detection sensor that detects four types of gas, temperature, and humidity, but is not limited to this as long as it is capable of detecting gas, and may not detect temperature or humidity, and may detect four or more types of gas or less than three types of gas. In any case, gas can be detected in the same manner as in the above-described embodiment.

[0045] In the above-described embodiment, the display means 36 is a liquid crystal display, but is not limited thereto as long as it can notify information, and may be, for example, an organic EL display or an LED display, or may be an audio notification means such as a speaker. Also, it may transmit information to various displays or audio notification means via wireless communication means such as WiFi or BlueTooth (registered trademark). In any case, various information can be notified to the user in the same manner as in the above-described embodiment.

[0046] In the above-described embodiment, the information management device 40 is a known computer, but is not limited to this as long as it has computing power, and may be, for example, a microprocessor, an integrated circuit, etc. In any case, similar to the above-described embodiment, information on manholes can be extracted from the storage means 44, and information on manholes near the gas detector 30 can be notified to the user.

[0047] In the above-described embodiment, the storage means 44 is provided in the information management device 40, but the information management device 40 and the storage means 44 are not limited to this as long as they are capable of transmitting and receiving information, and may be connected to each other by wire or wirelessly, or may be connected via the electric communication network 10 (for example, a cloud drive, etc.). In any case, various information can be stored and extracted in the same manner as in the above-described embodiment.

[0048] In the above-described embodiment, step S140 is executed, but step S140 may be omitted. In this way, a warning is issued only when the gas detector 30 detects an abnormality, so that the occurrence of an accident can be reduced without the user being aware of the manhole information.

[0049] In the above-mentioned embodiment, the first reference concentration is a concentration indicating a safety standard set forth in the Industrial Safety and Health Act, for example, 18% oxygen concentration, 10 ppm hydrogen sulfide concentration, 50 ppm carbon monoxide concentration, and 30% LEL infectious gas, but it is not limited to these concentrations, and may be, for example, 20% oxygen concentration, 5 ppm hydrogen sulfide concentration, 10 ppm carbon monoxide concentration, and 5% LEL infectious gas, or various concentrations based on safety. By doing so, the same effect as the above-mentioned embodiment can be obtained with a safer standard.

[0050] In the above embodiment, for example, the oxygen concentration is 20%, the hydrogen sulfide concentration is 5 ppm, the carbon monoxide concentration is 10 ppm, and the infectious gas is 5% LEL is used as the second reference concentration, but the second reference concentration is not limited to these concentrations and various concentrations can be used as long as they are lower than the first reference concentration. By doing so, the same effect as the above embodiment can be obtained with a safer standard. [Industrial Applicability]

[0051] As shown in the above-mentioned embodiment, the present invention can be used in the field of gas detection, particularly as a gas detector. [Explanation of symbols]

[0052] 10...telecommunications network, 20...gas detection system, 30...gas detector, 32...gas detection means, 34...location information acquisition means, 36...display means, 38...first transmission / reception means, 40...information management device, 42...second transmission / reception means, 44...memory means, 46...manhole information table, 50...control means, 51...CPU, 52...ROM, 53...RAM, 54...interface, 55...bus.

Claims

1. a gas detector including: a gas detection means for detecting gas; a position information acquisition means for acquiring position information and outputting information relating to a current position as current position information; and a first transmission / reception means for transmitting information including the current position information; an information management device having: second transmitting / receiving means for transmitting and receiving information including the current location information transmitted from the first transmitting / receiving means; and manhole identifying means for identifying a manhole located near a gas detector based on the current location information; characterized in that it comprises Gas detection systems.

2. The information management device has a storage means for storing manhole information, which is information relating to a manhole, and the manhole identification means identifies the manhole based on the current location information and transmits at least a part of the manhole information to the gas detector.

10. The gas detection system of claim 1.

3. The current location information and the manhole information include latitude and longitude information, which is information relating to latitude and longitude, The manhole identification means compares the latitude and longitude information included in the current location information with the latitude and longitude information included in the manhole information, and identifies a manhole located near the gas detector as a manhole stored in the manhole information when the latitude and longitude information included in the current location information is within a predetermined range from the latitude and longitude information included in the manhole information.

3. The gas detection system of claim 2.

4. The gas detector is characterized in that it has a notification means for notifying the manhole information when the manhole information is received from the information management device.

4. The gas detection system according to claim 2 or 3.

5. The manhole information is information including abnormality detection information indicating that the gas detection means has detected an abnormality.

5. The gas detection system of claim 4.

6. 6. The gas detection system according to claim 5, a warning means for issuing a warning when the gas detector detects a gas and the concentration of the gas is equal to or higher than a predetermined concentration; Equipped with The predetermined concentration is determined based on the presence or absence of the abnormality detection information. Gas detection systems.

7. a manhole identification means for receiving information including current position information that is information regarding the current position of a gas detector having gas detection means for detecting gas, position information acquisition means for acquiring position information and outputting information regarding the current position as current position information, and a first transmission / reception means for transmitting information including the current position information, and for identifying a manhole located near the gas detector based on the current position information; characterized in that it comprises Information management device.

8. A control method for an information management device comprising: gas detection means for detecting gas; position information acquisition means for acquiring position information and outputting information relating to a current position as current position information; first transmission / reception means for transmitting information including the current position information; and manhole identification means for receiving information including current position information which is information relating to the current position of a gas detector having the gas detection means, and identifying a manhole located near the gas detector based on the current position information, an information receiving step of receiving information including the current location information; a manhole identifying step of identifying a manhole located near the gas detector based on the location information received in the information receiving step; characterized in that it comprises A method for controlling an information management device.

9. 9. A program for executing the method for controlling an information management device according to claim 8 on one or more computers.

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