JP6714457B2 - Detecting device, detecting system, and method for constructing detecting system - Google Patents

Description

The present invention relates to a detection device including a main body capable of installing a detection unit that detects a detection target, a detection system including a plurality of the detection devices, and a method for constructing the detection system.

In the detection device as described above, for example, a detection target is detected as a leakage gas such as methane or hydrogen by the detection unit, and an alarm or the like is issued according to the detection information of the detection unit. Therefore, the detection device is installed in a place where an abnormal state such as a gas leak may occur in various facilities and facilities.

For example, in a plant facility or the like, since an explosion-proof area or the like is set as a detection target area, it is required that the detection device has explosion-proof properties. Therefore, conventionally, there is known a detection device that includes a main body portion having an explosion-proof structure that shuts off from the outside, and has a detection portion installed inside the main body portion (see, for example, Patent Document 1).

In this Patent Document 1, a detection device installed in the explosion-proof area and an output device installed outside the explosion-proof area are connected by wire, and the detection information of the detection unit is sent to an external output device via the wire. It is outputting.

JP, 2001-281196, A

In recent years, it has been required to quickly detect an abnormal state such as gas leakage in equipment, and in order to meet the demand, it is considered to increase the number of detection devices installed.

However, in the detection device described in Patent Document 1, since the detection device installed in the explosion-proof area and the output device installed outside the explosion-proof area are connected by wire, it is possible to increase the number of detection devices installed. The number of wires connecting the detection device and the external output device will also increase. Therefore, in addition to additionally installing the detection device, wired wiring work must be performed, which leads to a complicated configuration and an increase in cost.

In view of this actual situation, a main problem of the present invention is to provide a detection device and a detection system capable of responding to a request to promptly detect an abnormal state such as gas leakage in equipment while simplifying the configuration and reducing the cost. And providing a method for constructing a detection system.

A first characteristic configuration of the present invention is a main body portion having an explosion-proof structure that shuts off from the outside,
A detection unit that detects the detection target,
A wire unit capable of wired communication with the body unit and externally connectable to an external device so that power can be supplied from the body unit;
The detection unit can be installed inside the main body, or configured to be externally connectable to the main body by the wired unit,
A wireless communication unit capable of wirelessly communicating with an external communication device is provided inside the main body unit ,
Inside the main body part, an output part capable of outputting to an externally connected external output device and an output control part for controlling an output state of the output part based on detection information of the detection part are provided. There is a point.

According to this configuration, since the detection unit can be installed inside the main body having the explosion-proof structure, it can have an explosion-proof property as a wireless detection device, and an explosion-proof area such as a plant facility as a detection target area. A wireless sensing device can be installed. When the detection unit is externally connected to the main body, the detection unit can be externally connected by the wired unit while having an explosion-proof property as a detection device. In this case, the wired unit enables the main body unit to supply power to the detection unit, and also enables wired communication between the main body unit and the detection unit. Therefore, the main body can acquire the detection information of the detection unit regardless of whether the detection unit is installed inside or when the detection unit is externally connected by the wired unit, and an abnormality such as a gas leak occurs. The state can be detected. Then, the main body unit can wirelessly communicate the acquired detection information of the detection unit to the external communication device by the wireless communication unit, and detect an abnormal state such as a gas leak even in an external location different from the detection device. be able to.

When increasing the number of detecting devices installed, it is only necessary to increase the number of detecting devices installed without performing wired wiring work for connecting the detecting devices to an external output device. Therefore, it is possible to easily increase the number of detectors installed while simplifying the configuration and reducing the cost, and it is also appropriate for the request to quickly detect an abnormal state such as a gas leak in the facility. I can respond.

According to this configuration, the output control unit controls the output state of the output unit based on the detection information of the detection unit. Therefore, for example, when an abnormal state such as gas leakage is detected from the detection information of the detection unit, the abnormal state is detected. The external output device corresponding to the above can be performed by the external output device. Therefore, for example, when the external output device is a notification device such as a lamp or a buzzer, the user can easily recognize the detection of the abnormal state by the external output from the external output device (report device).

According to a second characteristic configuration of the present invention, a plurality of the output units are provided,
The output control unit is configured to control the output state of the plurality of output units in a state in which the output form of the plurality of output units is different based on the detection information of the detection unit.

According to this configuration, the output control unit changes the output form of the plurality of output units based on the detection information of the detection unit. Therefore, the user can determine the output form of the plurality of output units. It is possible to grasp what kind of information the detection information of the detection unit is. For example, when detecting a two-stage abnormal state of a first abnormal state and a second abnormal state based on the detection information of the detection unit, it is possible to detect the first abnormal state by the output form of the plurality of output units. It is possible for the user to know whether there is the detection or the detection of the second abnormal state. Therefore, the user can appropriately perform the treatment according to the detection information of the detection unit.

In a third characteristic configuration of the present invention, a determination unit that determines a state of the external device is provided inside the main body unit based on information of the external device acquired by wired communication via the wired unit. There is a point.

According to this configuration, an external device used for a purpose other than the detection by the detection unit can be externally connected by the wired unit, but even in such a case, the determination unit can perform the wired communication via the wired unit. The state of the external device can be determined based on the information of the external device acquired by. Therefore, when an external device is externally connected to the main unit, the state of the external device can be properly grasped, and the detection device can be appropriately used for purposes other than the detection of abnormal conditions such as gas leakage ..
A fourth characteristic configuration of the present invention is that the determination unit determines a failure state of the external device externally connected by the wired unit.

A fifth characteristic configuration of the present invention is that another detection unit of a type different from the detection unit that can be installed inside the main body unit can be connected to the wired unit as the external device.

According to this configuration, even if another detection unit of a different type from the detection unit that can be installed inside the main body unit, by connecting the other detection unit to the outside through the wired unit, An abnormal state such as gas leakage can be detected based on the detection information. As a result, not only one type of detection unit but also a plurality of types of detection units can be applied as the detection unit of the detection device, and the detection device is easy to use.

A sixth characteristic configuration of the present invention is a detection system including a plurality of the detection devices according to any one of the first to fifth characteristic configurations described above,
Based on the detection information of the detection unit wirelessly communicated between the wireless communication unit and the external communication device in each of the plurality of detection devices, while determining the detection state in each of the plurality of detection devices, A management device capable of transmitting management control information for managing and controlling each detection device based on the determination result to each of the plurality of detection devices by wireless communication between the external communication device and the wireless communication unit. Equipped,
Each of the plurality of detection devices is configured to be able to control its own operation based on the management control information from the management device.

According to this configuration, the management device acquires the detection information of the detection unit in each of the plurality of detection devices by wireless communication between the wireless communication unit and the external communication device, and among the plurality of detection devices, It is possible to determine which detection device is detecting the abnormal state. The management device can transmit management control information based on the determination result to the detection device by wireless communication between the wireless communication unit and the external communication device, and the detection device that receives the management control information Operations based on the management control information can be performed.

In this way, the management device can cause the detection device to perform an operation based on the management control information by transmitting the management control information while managing the detection state of each of the plurality of detection devices. Therefore, the detection device can perform not only the operation based on the detection information of its own detection unit, but also the operation based on the management control information from the management device. The detection device can also be used for various purposes.

A seventh characteristic configuration of the present invention is a method for constructing a detection system including a plurality of the detection devices according to any one of the first to fifth characteristic configurations described above,
As the plurality of detection devices, a built-in detection device in which the detection unit is installed inside the main body unit is installed, and a non-built-in detection device in which the detection unit is not installed inside the main body unit Is installed with the existing detection device connected to the wired section as the external device,
A management device that can freely communicate information with the plurality of detection devices by wireless communication between the wireless communication unit and the external communication device in each of the plurality of detection devices, and manages the plurality of detection devices. The point is to install.

According to this configuration, the non-built-in detection device is installed in a state in which the existing detection device is connected to the wired portion, so that the existing detection device can be used as it is. In constructing the detection system, not only the built-in detection device is installed, but also the non-built-in detection device is installed. Therefore, the existing detection device can be used as it is to simplify the configuration and reduce the cost. A detection system can be constructed while reducing the number.

In addition, by installing an external communication device and a management device, the management device has multiple detection devices that can be used for different purposes, not only for detecting abnormal conditions such as gas leakage using wireless communication. A useful system that can be managed can be constructed.

Overall schematic diagram of the detection system Detection system control block diagram Control block diagram showing the flow of information in the detection system Diagram showing the display of the detector The figure which shows the detection apparatus in another embodiment.

Embodiments of a detection device according to the present invention, a detection system including a plurality of the detection devices, and a method for constructing the detection system will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the detection system 1 includes a plurality of detection devices 2 and a management device 3 that manages the plurality of detection devices 2. The detection system 1, for example, has a detection device 2 installed in each of a plurality of detection target areas in a plant facility, increases the number of places where an abnormal state such as gas leakage is detected as much as possible, and quickly detects the occurrence of the abnormal state. I am trying.

The detection device 2 is capable of wired communication between the main body portion 21 having an explosion-proof structure that shuts off from the outside, the detection portion 22 that detects a detection target, and the main body portion 21, and is capable of supplying power from the main body portion 21 to an external device. 4 is connected to the outside with a wired section 23. Each of the plurality of detection devices 2 is configured to be supplied with power from the external power supply 8 by the power supply line 7.

In this embodiment, as the detection device 2, an example having a first detection device 2a, a second detection device 2b, and a third detection device 2c is shown. The first detection device 2 a includes the detection unit 22 inside the main body 21, and the external device 4 is not externally connected to the main body 21. The second detection device 2b does not include the detection unit 22 inside the main body unit 21, and the suction-type detection unit 22a as the external device 4 is externally connected to the main body unit 21. The third detection device 2 c is provided with the detection unit 22 inside the main body 21, and the external device 4 is externally connected to the main body 21. As the external device 4, in addition to the suction type detection unit 22a, various detection units such as a temperature detection unit that detects the temperature of the detection target region, a pressure detection unit that detects the pressure of the detection target region, a pump, and the like. Drive equipment can be applied.

In this embodiment, an example in which six detection devices 2 are provided is shown, but the number of detection devices 2 can be changed as appropriate. In FIG. 2, as the detection device 2, the first detection device 2a, the second detection device 2b, and the third detection device 2c are shown one by one, and the other detection devices 2 are omitted.

The main body 21 has an explosion-proof structure, for example, by covering the inside with an explosion-proof cover that blocks the outside. As shown in FIG. 2, inside the explosion-proof structure of the main body portion 21, a plurality of wireless communication portions 24 capable of wireless communication with the external communication device 5, a plurality of output portions 25 capable of external output to the external output device 6, and those. An output control unit 26 that controls the output states of the plurality of output units 25 is provided.

The detection unit 22 targets, for example, a leak gas such as methane or hydrogen, and various types of detection units such as a hot wire semiconductor type and a catalytic combustion type can be applied. Like the wireless communication unit 24 and the like, the detection unit 22 can be installed not only inside the explosion-proof structure of the main body unit 21 but also externally connectable to the main body unit 21 by the wired unit 23.

When the detection unit 22 is externally connected to the main body unit 21, for example, the suction-type detection unit 22a can be externally connected. Even in this case, since the detection information of the detection unit 22 is input to the output control unit 26 via the determination unit 27 and the like, the output is performed as in the case where the detection unit 22 is installed inside the main body unit 21. The control unit 26 is configured to be able to control the output states of the plurality of output units 25 based on the detection information of the externally connected detection unit 22 (suction type detection unit 22a). As a result, another detection unit 22a (suction type detection unit) of a different type from the detection unit 22 (diffusion type detection unit) that can be installed inside the main body unit 21 is connected to the wired unit 23 as the external device 4. It is configured to be possible.

As shown in FIG. 1, the suction type detection unit 22a detects a pump 32 capable of sucking air in a detection target region through a suction passage 31 and a leak gas in the air in the detection target region sucked through the suction passage 31. The target detection sensor 33 is provided. As the detection sensor 33, similarly to the detection unit 22, various types of detection sensors such as a hot wire semiconductor type and a contact combustion type can be applied.

The suction type detection unit 22a sucks air in the detection target area through the suction passage 31 to the installation location of the pump 32 and the detection sensor 33 even if the pump 32 and the detection sensor 33 are installed in a location apart from the detection target area. Therefore, an abnormal state such as gas leakage in the detection target area can be detected. Therefore, for example, it is useful to use the suction type detection unit 22a in order to detect an abnormal state in the detection target region where the risk of gas leakage is high.

The output unit 25 is configured by, for example, a switch unit (electrical contact unit) that connects and disconnects the output of current to the external output device 6, and supplies current to the external output device 6 in the ON state and in the OFF state. The current supply to the external output device 6 is stopped. The external output device 6 is omitted in FIG. 1, but various output devices can be applied. For example, if a notification device such as a lamp or a buzzer is applied, the notification device can notify when the output unit 25 is in the ON state. In this embodiment, three output units 25 are provided, but the number of output units 25 can be changed as appropriate.

The output control unit 26 is configured to control the output state of the output unit 25 by switching whether the output unit 25 is in the ON state or the OFF state. When controlling the output state of the output unit 25, the output control unit 26 controls the output state of the output unit 25 based on the detection information of the detection unit 22, and the external communication device 5 wirelessly communicating with the first control mode. One or both of the second control mode for controlling the output state of the output unit 25 based on the external information of 1.

Inside the explosion-proof structure of the main body 21, a determination unit 27 is provided in addition to the output unit 25, the output control unit 26, and the like. In the second detection device 2b in which the suction type detection unit 22a is connected to the wired unit 23 and in the third detection device 2c in which the external device 4 is connected to the wired unit 23, the main body unit 21 performs wired communication via the wired unit 23. Thus, information on the suction type detection unit 22a and the external device 4 can be acquired. The determination unit 27 is configured to determine the states of the suction-type detection unit 22a and the external device 4 based on the information of the suction-type detection unit 22a and the external device 4 acquired by wired communication via the wired unit 23. Has been done. The determination unit 27 can output information such as a determination result regarding the state of the suction type detection unit 22a and the external device 4 to the output control unit 26, and wireless communication between the wireless communication unit 24 and the external communication device 5. Is configured to be transmittable to the management device 3.

The management device 3 detects the detection state of each of the plurality of detection devices 2 based on the detection information of the detection unit 22 wirelessly communicated between the external communication device 5 and the wireless communication unit 24 of each of the plurality of detection devices 2. Is configured to determine. Then, the management device 3 provides management control information for managing and controlling each detection device 2 based on the determination result of the detection state of each of the plurality of detection devices 2 between the external communication device 5 and the wireless communication unit 24. It is configured to be able to transmit to each of the plurality of detection devices 2 by wireless communication between them.

When information such as the determination result is wirelessly communicated from the determination unit 27, the management device 3 uses the suction-type detection unit 22a connected to the wired unit 23 or the outside based on the information such as the determination result. It also manages the state of the device 4.

The external communication device 5 includes, for example, a gateway 5a and an access point 5b, and is configured to be capable of wirelessly communicating various information with the wireless communication unit 24 of each of the plurality of detection devices 2. By the way, the wireless communication unit 24 in each of the plurality of detection devices 2 not only wirelessly communicates the information of the detection device 2 of itself to the external communication device 5, but also relays the information of the other detection device 2 to the external communication device 2. 5 is configured to be capable of wireless communication.

Hereinafter, the operations of the detection device 2 and the management device 3 when the output control unit 26 executes the first control mode and the second control mode will be described with reference to FIGS. 2 and 3. FIG. 3 shows four detection devices 2 and omits the other detection devices 2. Further, FIG. 3 is for showing the flow of various kinds of information. In the control block diagram of FIG. 2, the three output units 25 are combined into one, and the determination unit 27 is omitted. Only the main part of is shown. In FIG. 3, the detection device 2 located at the second position from the top executes the first control mode, and the detection device 2 located at the top and the detection device 2 located at the third position from the top are the second. It shows a state in which the control mode is executed, the detection device 2 located at the fourth position from the top does not detect an abnormal state such as gas leakage, and does not receive the management control information Q1 from the management device 3. There is.

(First control mode)
When the first control mode is executed, the output control unit 26, based on the detection information P1 of the detection unit 22 as shown in the detection device 2 located second from the top in FIG. Output information P2 for controlling the output state of the output unit 25 is generated, the output information P2 is output to the output unit 25, and the output states of the plurality of output units 25 are controlled. Incidentally, although FIG. 3 omits an example in which the suction type detection unit 22a is externally connected, the output control unit 26 is externally connected in the same manner as when the detection unit 22 is installed inside the main body unit 21. Output information P2 for controlling the output state of the plurality of output units 25 is generated based on the detection information P1 of the suction type detection unit 22a.

For example, the output control unit 26 determines, based on the detection information P1 of the detection unit 22, whether or not the leakage gas concentration is the first abnormal state in which the concentration is equal to or higher than the first set concentration, and the leakage gas concentration is It is determined whether or not the second abnormal state is higher than the second set density which is higher than the first set density. When the output control unit 26 determines that it is in the first abnormal state, the output control unit 26 outputs the output information P2 for switching the first output unit 25a (see FIG. 2) of the plurality of output units 25 to the ON state, and outputs the external information. The output device 6 performs operations such as notification corresponding to the first abnormal state. When the output control unit 26 determines that it is in the second abnormal state, it outputs the output information P2 for switching the second output unit 25b (see FIG. 2) of the plurality of output units 25 to the ON state, The output device 6 performs operations such as notification corresponding to the second abnormal state.

As described above, the output control unit 26 determines whether the first abnormal state or the second abnormal state is in accordance with the concentration of the leaked gas based on the detection information P1 of the detection unit 22, and according to the determination result. Of the plurality of output units 25, the output form of the plurality of output units 25 is changed by changing the output unit 25 that is switched to the ON state. For example, a lamp is connected to the first output unit 25a as the external output device 6, a buzzer is connected to the second output unit 25b as the external output device 6, and the like. By connecting the device 6, the user can easily recognize whether the abnormal state is the first abnormal state or the second abnormal state.

Further, the output control unit 26 determines whether or not the detection device 2 is in a failure state based on the detection information P1 of the detection unit 22 and other information, and determines that the detection device 2 is in a failure state. Then, among the plurality of output units 25, output information P2 for switching the third output unit 25c (see FIG. 2) to the ON state is output, and the external output device 6 notifies the failure state of the detection device 2 by notification. And so on. Accordingly, the user can easily recognize the failure state of the detection device 2 in addition to the first abnormal state or the second abnormal state, and perform appropriate maintenance work such as replacement of the detection device 2. It can be done at the timing.

In addition to outputting the output information P2 to the output unit 25, the output control unit 26 also outputs the state information P3 indicating the state of the detection device 2 by wireless communication between the wireless communication unit 24 and the external communication device 5. It is configured to transmit to the management device 3. The state information P3 indicates from which detection device 2 the information is, and in the detection device 2, the detection information P1 of the detection unit 22 or of the output control unit 26 based on the detection information P1 of the detection unit 22. It includes information indicating the determination result (whether it is the first abnormal state or the second abnormal state), and can also include information indicating whether the detection device 2 is in the failure state.

The management device 3 determines the detection state of the detection device 2 such as whether the detection device 2 detects the first abnormal state or the second abnormal state based on the state information P3. , Manages the detection states of the plurality of detection devices 2. Further, when the state information P3 includes information indicating whether or not the detection device 2 is in a failure state, the management device 3 determines that the detection device 2 is based on the state information P3 from the output control unit 26. It also manages the failure state of the detection device 2 that is in the failure state.

Here, in the second detection device 2b and the third detection device 2c in which the suction type detection unit 22a and the external device 4 are connected to the wired unit 23, the determination unit 27 determines the state of the suction type detection unit 22a and the external device 4. Is determined and the determination result is output to the output control unit 26. Therefore, by executing the first control mode, the output control unit 26 can also control the output state of the output unit 25 based on the determination result of the determination unit 27.

For example, as described above, instead of setting the output unit for externally outputting the failure state of the detection device 2 to the third output unit 25c, the failure state of the suction type detection unit 22a or the external device 4 is externally output. The output unit for doing so can be set to the third output unit 25c. In this case, when the determination unit 27 determines that the suction-type detection unit 22a and the external device 4 are in a failure state, the determination result is output to the output control unit 26, so the output control unit 26 determines the determination unit 27. The output information P2 for switching the third output unit 25c to the ON state is output based on the determination result from the above, and the external output device 6 notifies the suction-type detection unit 22a and the external device 4 of the failure state. And so on. In this way, by setting a part of the plurality of output units 25 as an output unit that performs external output corresponding to the states of the suction-type detection unit 22a and the external device 4, the user can operate the external output device 6 by By the operation, the state of the suction type detection unit 22a and the external device 4 can be grasped.

(Second control mode)
When executing the second control mode, the output control unit 26, as shown by the detection device 2 located at the top and the detection device 2 located at the third position from the top in FIG. The management control information Q1 from the management device 3 is received as external information from the external communication device 5 wirelessly communicated by the wireless communication unit 24. Therefore, the output control unit 26 generates the management output information Q2 for controlling the output states of the plurality of output units 25 based on the management control information Q1 and outputs the management output information Q2 to the output unit 25. , The output states of the plurality of output units 25 are controlled.

The management control information Q1 is information for managing and controlling each of the plurality of detection devices 2 by the management device 3, and, for example, which output unit among the plurality of output units 25 is included in each of the plurality of detection devices 2. It is information indicating whether 25 is switched to the ON state. Therefore, the output control unit 26 selects, based on the management control information Q1 from the management device 3, which one of the plurality of output units 25 is to be switched to the ON state, and selects the selected output unit 25. The management output information Q2 for switching to the ON state is output to the output unit 25, and the external output device 6 connected to the selected output unit 25 performs an operation such as notification.

As a result, by transmitting the management control information Q1 from the management device 3 to the wireless communication unit 24 of the detection device 2, the detection device 2 externally outputs it at the output unit 25, and an operation such as notification by the external output device 6 is performed. It can be performed. For example, the management device 3 may detect the detection target area that is estimated to be in an abnormal state in the future based on the detection status of the abnormal state in the plurality of detection target areas, before the detection device 2 detects the abnormal state. It is possible to perform an operation such as notification by the external output device 6 by outputting the external output from the second output unit 25. Therefore, the user can recognize that there is a possibility of becoming an abnormal state before becoming an abnormal state, and can take measures against the abnormal state in advance.

Further, when executing the second control mode, in addition to the notification of the abnormal state by the external output device 6, the output control section Q of the detection device 2 outputs the output to the outside by the management control information Q1 from the management device 3. Thus, the operation by the external output device 6 can be performed. For example, when the third output unit 25c is set as an external output unit dedicated to the management device, the management control information Q1 from the management device 3 is information indicating that the third output unit 25c is switched to the ON state. As a result, the output control unit 26 outputs the output information P2 for switching the third output unit 25c to the ON state based on the management control information Q1 from the management device 3, and the external output device 6 makes the management device dedicated. The operation of can be performed.

By performing the first control mode in each of the plurality of detection devices 2, the management device 3 uses the state information P3 in each of the plurality of detection devices 2 to detect the detection state or abnormality in each of the plurality of detection devices 2. Manages the state of the state. Therefore, the management device 3 detects which of the plurality of detection devices 2 is in an abnormal state based on the state information P3 of each of the plurality of detection devices 2 acquired by executing the first control mode. It is configured to be able to determine whether or not there is. Then, the management device 3 uses the information to be externally output by the output unit 25 in the related detection device 2e associated with the detection device 2d that is detecting the abnormal state as the management control information Q1. 2e is configured to be transmittable to the wireless communication unit 24.

Since the state information P3 includes information indicating which detection device 2 the information is from and the detection state of the detection device 2, the management device 3 determines which of the plurality of detection devices 2 is selected. It is possible to determine whether the detection device 2 is detecting an abnormal state. In FIG. 3, the management device 3 determines that the second detection device 2 from the top is the detection device 2d in the abnormal state, and is located at the top with respect to the second detection device 2 from the top. The detection device 2 and the detection device 2 located at the third position from the top are associated detection devices 2e associated in advance.

Regarding the association of the detection device 2, for example, the detection device 2 installed within a setting region (within the set distance range) with respect to a certain detection device 2 is set as a detection device 2 related to the certain detection device 2. , The detection device 2 installed on the same floor can be set as the related detection device 2. Further, the detection device 2 installed in the same passage of equipment or the like can be set as the related detection device 2, and the conditions under which the detection devices 2 are associated can be appropriately changed.

The management device 3 externally uses the output unit 25 from the external communication device 5 to the wireless communication unit 24 between the related detection device 2e located at the top and the related detection device 2e located at the third position from the top. The management control information Q1 for outputting is transmitted. In the related detection device 2e located at the top and the related detection device 2e located at the third position from the top, the output control unit 26 executes the second control mode, and based on the management control information Q1. Then, the management output information Q2 is generated and output to the output unit 25, and the output states of the plurality of output units 25 are controlled.

As described above, when an abnormal state such as a gas leak is detected by a certain detection device 2d, not only the detection device 2d that has detected the abnormal state but also the detection device 2e related to the detection device 2d outputs the external output. An operation such as notification by the device 6 can be performed. Therefore, since an operation such as notification by the external output device 6 is performed in the plurality of detection devices 2, the user can easily recognize that the abnormal state is detected. Moreover, since the related detection device 2e performs an operation such as notification by the external output device 6 before the actual detection of the abnormal state, the user is notified in advance that the abnormal state may occur. can do.

Here, when the output unit 25 of the related detection device 2e outputs the output, the output unit 25 of the plurality of output units 25 can be appropriately changed.

For example, when the detection device 2d detects a first abnormal state such as gas leakage, the detection device 2d responds to the first abnormal state by the external output device 6 connected to the first output unit 25a. In addition to performing an operation such as notification, the related detection device 2e can also perform an operation such as notification corresponding to the first abnormal state by the external output device 6 connected to the first output unit 25a. In this case, the management control information Q1 from the management device 3 is used as information for selecting the first output unit 25a as the output unit 25 for external output. As described above, by transmitting the management control information Q1 by the management device 3, the detection device 2d that has detected the abnormal state and the related detection device 2e can have the same output unit 25 for external output. Therefore, the user can easily recognize the occurrence of the abnormal state while distinguishing between the first abnormal state and the second abnormal state.

Further, for example, when the detection device 2d detects a second abnormal state such as a gas leak, the detection device 2d causes the external output device 6 connected to the second output unit 25b to cause the second abnormal state. Perform corresponding notification and other operations. On the other hand, the related detection device 2e can perform an operation such as a notification corresponding to the first abnormal state by the external output device 6 connected to the first output unit 25a. In this case, the management control information Q1 from the management device 3 is used as information for selecting the first output unit 25a as the output unit 25 for external output. In this way, by transmitting the management control information Q1 by the management device 3, it is possible to make the output unit 25 for external output different between the detection device 2d that has detected the abnormal state and the related detection device 2e. Therefore, by connecting different kinds of external output devices 6 to each of the plurality of output units 25, the user can easily recognize the detection of the abnormal state, but which of the detection devices 2 has detected the abnormal state. 2d and which sensing device 2 is the associated sensing device 2e.

As described above, the output control unit 26 can execute one or both of the first control mode and the second control mode, but since the output control unit 26 includes a plurality of output units 25 to be controlled, the output control unit 26 is provided. Is configured such that it is possible to separately set, for each of the plurality of output units 25, either or both of the first control mode and the second control mode.

For example, for the first output unit 25a and the second output unit 25b, the output control unit 26 can execute both the first control mode and the second control mode, and for the third output unit 25c, the output control unit 26. Can be set to be executable only in the first control mode. Further, the setting of the control mode that can be executed by the output control unit 26 can be set separately for each of the plurality of detection devices 2, and one detection device 2 and another detection device 2 may have different setting modes. You can also

As shown in FIG. 4, the main body 21 is provided with a display unit 28 that displays various kinds of information. The display unit 28 includes an output state display unit 29 that displays the output state of the output unit 25, and a device state display unit 30 that displays the detection state and the failure state of the detection device 2. As the output state display unit 29, for the first output unit display unit 29a that displays that the first output unit 25a is in the ON state, and for the second output unit that displays that the second output unit 25b is in the ON state. The display unit 29b and the third output unit display unit 29c for displaying that the third output unit 25c is in the ON state are provided. As the device state display unit 30, a first abnormal state display unit 30a that displays a first abnormal state, a second abnormal state display unit 30b that displays a second abnormal state, and a fault state And a failure state display section 30c for displaying.

When displaying on the output state display unit 29 and the device state display unit 30, by switching between lighting and blinking, the output control unit 26 is executing the first control mode and the output control unit 26 is performing the second control. It is configured to be distinguishable from the case where the mode is being executed.

For example, when the output control unit 26 determines that the output control unit 26 is in the first abnormal state by executing the first control mode, the first output unit display unit 29a and the first abnormal state display unit 30a are turned on. On the other hand, by executing the second control mode, when performing an operation such as a notification corresponding to the first abnormal state based on the management control information Q1 from the management device 3, the first output section display unit 29a. And the 1st abnormal condition display part 30a is blinked. The second output display unit 29b, the third output display unit 29c, the second abnormal state display unit 30b, and the failure state display unit 30c are also lit when displaying in the first control mode, When the display is made in the second control mode, the display blinks.

The first output unit display unit 29a, the second output unit display unit 29b, and the third output unit display unit 29c are displayed when the corresponding output unit 25 is switched to the ON state. The first abnormal state display unit 30a, the second abnormal state display unit 30b, and the failure state display unit 30c can be individually displayed.

For example, when executing the first control mode, the output control unit 26 sets the output state of the output unit 25 based on the determination result of the determination unit 27, not the detection information of the detection unit 22 or the failure information of the detection device 2. At the time of control, only one of the first output display unit 29a, the second output display unit 29b, and the third output display unit 29c is turned on, and the first output unit 29a based on the detection information of the detection unit 22 is controlled. The first abnormal state display unit 30a and the second abnormal state display unit 30b and the fault state display unit 30c based on the fault state are not displayed.

Also, when executing the second control mode, for example, the output control unit 26 performs an operation dedicated to the management device based on the management control information Q1 from the management device 3 separately from the detection of the abnormal state or the failure state. At the time of performing, only one of the first output unit display unit 29a, the second output unit display unit 29b, and the third output unit display unit 29c blinks to detect the first abnormal state based on the detection of the abnormal state. The display unit 30a and the second abnormal state display unit 30b and the failure state display unit 30c based on the failure state are not displayed.

In this way, the output state display unit 29 and the device state display unit 30 can distinguish between the case where the output control unit 26 is executing the first control mode and the case where the output control unit 26 is executing the second control mode. It is possible to display which of the plurality of output units 25 is being switched to the ON state, and the detection state and the failure state of the detection device 2.

Here, each of the plurality of detection devices 2 is configured to be able to output an analog signal to the outside by a signal line 36, as shown by the dotted line in FIG. For example, by connecting the signal line 36 to the management device 3, it is possible for the management device 3 to acquire detection information and status information such as a failure state of each of the plurality of detection devices 2 through wired communication through the signal line 36. can do.

In this case, the management device 3 manages the states such as the detection state and the abnormal state of each of the plurality of detection devices 2 based on the state information acquired by the wired communication via the signal line 36, and the management state thereof. The management control information for controlling and controlling each of the detection devices 2 can be configured to be transmitted to each of the plurality of detection devices 2 by wired communication via the signal line 36. Then, the output control unit 26 in each of the plurality of detection devices 2 controls the output state of the plurality of output units 25 based on the management control information from the management device 3 acquired by wired communication via the signal line 36. be able to.

In this way, when the management device 3 is connected to each of the plurality of detection devices 2 by the signal line 36, the system using the wired communication by the signal line 36, the wireless communication unit 24, and the external communication device 5 are used. It is possible to construct a detection system that is combined with a system using wireless communication. As a result, for example, while operating a system using wired communication as an existing system, it is possible to construct a wireless communication system and evaluate the effectiveness of wireless communication, and a new wireless communication system without stopping the system. Can be moved to. At this time, operations such as maintenance and testing can be performed using the wireless communication system, and the work can be simplified.

Further, by having a system using the wired communication by the signal line 36 and a system using the wireless communication by the wireless communication unit 24 and the external communication device 5, the system using the wired communication is set as a system for normal use, and A system using communication can be used as a backup system. As a result, even if a disconnection occurs due to a disaster such as an earthquake, the detection system can be operated by the system using wireless communication.

(How to build a detection system)
When the above-described detection system 1 is constructed, as the detection device 2, the built-in detection device 2 (the first detection device 2a and the third detection device 2c) in which the detection unit 22 is installed inside the main body 21 is used. In addition to the installation, the non-built-in detection device 2 (second detection device 2b) in which the detection unit 22 is not installed inside the main body 21 and the existing detection device (for example, the suction type detection unit 22a) are externally installed. The device 4 is installed in a state of being connected to the wired part 23. Then, information can be freely communicated with the plurality of detection devices 2 by wireless communication between the wireless communication unit 24 and the external communication device 5 in each of the plurality of detection devices 2, and the plurality of detection devices 2 are managed. The management device 3 is installed.

For example, a detection device is installed in each of a plurality of detection target areas, and the existing detection system in which the plurality of detection devices and the output device are connected to each other by a wired section is replaced to construct the detection system 1 described above. The case will be described.

Not only is the built-in detection device 2 (the first detection device 2a and the third detection device 2c) installed by replacing the existing detection device, but also the built-in detection device 2 (first detection device 2a) is installed in another area. And a third sensing device 2c) can be installed. Therefore, the detection target area can be increased, and an abnormal state such as gas leakage can be detected promptly. When the suction type detection unit 22a or the like is installed as an existing detection device, the suction type detection unit 22a or the like is installed to the non-built-in detection device 2 (second detection device 2b). By externally connecting the detection device, the non-built-in detection device 2 (second detection device 2b) can be installed while using the existing detection device as it is.

The external communication device 5 is installed so as to wirelessly communicate with the wireless communication unit 24 in each of the plurality of detection devices 2, and the wireless communication between the wireless communication unit 24 and the external communication device 5 is used. A management device 3 that manages and controls the plurality of detection devices 2 is installed. As described above, by installing the detection device 2 and the management device 3, each of the plurality of detection devices 2 can detect an abnormal state such as a gas leak, and of course, manages the detection state and the failure state of the plurality of detection devices 2. While being managed by the device 3, the management device 3 manages and controls each of the plurality of detection devices 2 to construct a detection system 1 using wireless communication in which the detection device 2 can be used for purposes other than the detection operation. be able to.

[Another embodiment]
(1) In the above-described embodiment, the detection unit 22 is provided inside the main body unit 21, and the third detection device 2c in which the external device 4 is externally connected to the main body unit 21 is provided. In the device 2c, as shown in FIG. 5, as the external device 4, a pump 35 capable of sucking the air K in the detection target region through the suction passage 34 can be externally connected. Then, by supplying the air K in the detection target area sucked through the suction passage 34 to the detection unit 22 installed inside the main body 21, it is possible to detect an abnormal state such as gas leakage in the detection target area. ..

In this case, as shown in FIG. 2, power is supplied from the main body 21 to the pump 35 (external device 4) by the wired unit 23, and the determination unit 27 sends the status information such as the driving state of the pump 35 to the wired unit. It is acquired by wired communication via the unit 23. The determination unit 27 determines whether or not the driving state of the pump 35 is a normal state based on the state information of the pump 35, and outputs the determination result to the output control unit 26. The output control unit 26 determines from the determination result of the determination unit 27 whether the driving state of the pump 35 is normal. For example, when the output control unit 26 determines from the determination result of the determination unit 27 that the driving state of the pump 35 is abnormal, it is determined that the detection unit 22 is in a failure state in which the concentration of leaked gas in the detection target region cannot be detected. , The third output unit 25c is switched to the ON state, and the external output device 6 performs an operation such as a notification corresponding to the abnormal state of the pump 35. On the other hand, when the output control unit 26 determines from the determination result of the determination unit 27 that the driving state of the pump 35 is a normal state, the output control unit 26 determines that the leakage gas concentration in the detection target region can be detected by the detection unit 22 in a normal state. Given that, it is possible to control the output states of the first output unit 25a and the second output unit 25b based on the detection information of the detection unit 22.

(2) In the above embodiment, in addition to the detection unit 22 installed inside the main body unit 21, another detection unit 22 is externally connected to the first detection device 2a and the third detection device 2c by the wired unit 23. It may be connected, and the other detection unit 22 at this time may be a detection unit 22 having a different sensitivity from the detection unit 22 installed inside the main body unit 21.

For example, if the externally connected detection unit has higher sensitivity, the output control unit 26 determines whether or not it is a preliminary state before the abnormal state, based on the detection information of the externally connected detection unit 22. Thus, the output states of the plurality of output units 25 can be controlled. As a result, when the output control unit 26 determines that the output unit 25 is in the standby state, it can switch the output unit 25 to the ON state. Further, the output control unit 26 determines whether or not it is in an abnormal state by adding the detection information of the detection unit 22 externally connected to the detection information of the detection unit 22 installed inside the main body unit 21. Thus, the output states of the plurality of output units 25 can be controlled.

As described above, in the preliminary state before the abnormal state, the operation such as the notification by the external output device 6 can be performed, and the user can be notified immediately of the abnormal state. Moreover, since the abnormal state occurs after the preliminary state, it is possible to take into consideration the preliminary state when determining the abnormal state, and the abnormal state can be accurately determined.

In addition, the output control unit 26 determines the preliminary state, and wirelessly communicates the determination result between the wireless communication unit 24 and the external communication device 5, so that the management device 3 can detect each of the plurality of detection devices 2. The preliminary state can be managed by acquiring the determination result of the preliminary state. Thereby, for example, when the plurality of detection devices 2 are in the standby state, the management device 3 determines that there is a high possibility that the detection device 2 will be in an abnormal state after that, and causes the output unit 25 of one or more detection devices 2 to perform external output. Information for this purpose can be transmitted to the wireless communication unit 24 of one or more detection devices 2 as management control information.

(3) In the above embodiment, power is supplied from the external power supply 8 to the plurality of detection devices 2 by the power supply line 7, but instead of the power supply from the outside, the main body 21 is replaced by the power supply line 7. By providing a battery inside, each of the plurality of detection devices 2 can be configured to have a built-in battery.

(4) In the above embodiment, the example in which the detection device 2 includes the first detection device 2a, the second detection device 2b, and the third detection device 2c is shown. However, for example, only the first detection device 2a may be used. It is also possible to combine the first detection device 2a and the second detection device 2b, and which of the first detection device 2a, the second detection device 2b, and the third detection device 2c is to be combined can be appropriately changed. Is.

1 Detection System 2 Detection Devices 2a, 2c Built-in Detection Device 2b Non-Built-in Detection Device 3 Management Device 4 External Device 5 External Communication Device 6 External Output Device 21 Main Body 22 Detection Part 23 Wired Part 24 Wireless Communication Part 25 Output Unit 26 output control unit 27 determination unit

Claims (7)

A main body having an explosion-proof structure that shuts off from the outside,
A detection unit that detects the detection target,
A wired unit capable of wired communication with the main unit and capable of externally connecting an external device so that power can be supplied from the main unit,
The detection unit can be installed inside the main body, or configured to be externally connectable to the main body by the wired unit,
A wireless communication unit capable of wirelessly communicating with an external communication device is provided inside the main body ,
Inside the main body unit, an output unit capable of outputting externally to an externally connected external output device, and an output control unit controlling the output state of the output unit based on the detection information of the detection unit are provided. It is sensing device. A plurality of the output units are provided,
The output control unit is configured to control the output state of the plurality of output units in a state in which the output form of the plurality of output units is different based on the detection information of the detection unit. The detection device described . The inside of the said main-body part is provided with the determination part which determines the state of the said external device based on the information of the said external device acquired by wire communication via the said wired part. of the sensing device. The detection device according to claim 3, wherein the determination unit determines a failure state of the external device externally connected by the wired unit . The another detection unit of a type different from the detection unit that can be installed inside the main body unit is configured to be connectable to the wired unit as the external device. Detection device. A detection system comprising a plurality of the detection devices according to claim 1.
Based on the detection information of the detection unit wirelessly communicated between the wireless communication unit and the external communication device in each of the plurality of detection devices, while determining the detection state in each of the plurality of detection devices, A management device capable of transmitting management control information for controlling and controlling each detection device based on the determination result to each of the plurality of detection devices by wireless communication between the external communication device and the wireless communication unit. Equipped,
A detection system in which each of the plurality of detection devices is configured to be capable of controlling its own operation based on management control information from the management device. A method of constructing a detection system comprising a plurality of the detection devices according to claim 1.
As the plurality of detection devices, a built-in detection device in which the detection unit is installed inside the main body unit is installed, and a non-built-in detection device in which the detection unit is not installed inside the main body unit Is installed with the existing detection device connected to the wired unit as the external device,
A management device capable of freely communicating information with the plurality of detection devices by wireless communication between the wireless communication unit and the external communication device in each of the plurality of detection devices, and managing the plurality of detection devices. A method of constructing a detection system that installs.

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