JP5880796B1 - Dosimeter and plant management system - Google Patents

Abstract

A dosimeter for measuring a dose includes an emergency operation unit provided in a housing of the dosimeter, a wireless communication unit that communicates with a monitoring device that monitors the state of the plant, and an operation input to the emergency operation unit. A control unit that causes the wireless communication unit to transmit emergency notification information indicating an emergency to the monitoring device when detected.

Description

  The present invention relates to a dosimeter and a plant management system.

  In Japan, after the Great East Japan Earthquake, there was an amendment to the Reactor Regulation Act on Reactors, which included mandatory measures for serious accidents such as reactor core damage at nuclear power plants (hereinafter referred to as “Severe Accident Countermeasures”). It was enforced. Severe accident countermeasures have newly established standards for dealing with serious accidents and terrorism, and require operators to comply with these standards. In order to cope with serious accidents and terrorism, it is necessary to construct a system that enables smooth reporting and communication.

  If an abnormality occurs in the power generation system or equipment during the operation of the power plant, the duty worker who discovered the abnormality in the operational status reports to the duty manager of the central control room by telephone, etc. (See, for example, Patent Document 1).

JP 2014-146147 A

  When making a report or calling by so-called paging, such as a telephone call to the duty manager of the central control room, the reporter such as the duty staff must move to the place where the handset (handset) is installed. Don't be. In an emergency such as a serious accident or terrorism, it is assumed that the vehicle cannot move or that it must be reported as soon as possible.

  On the other hand, there is an area that is strictly controlled so that articles cannot be freely carried in and out, such as a specific management area such as a radiation management area in a nuclear power plant. In such a specific management area, since it is restricted to bring in devices for reporting or contacting from outside, it is difficult to always carry such devices to workers such as radiation workers. It is.

  Therefore, an object of the present invention is to enable immediate notification of an emergency when an emergency is discovered in a specific management area where articles cannot be carried in and out freely.

A dosimeter according to an embodiment of the disclosure is a dosimeter for measuring a dose, and is an emergency unit provided in a housing of the dosimeter different from the operation unit used for operation of the dosimeter. A transmission / reception unit that transmits and receives data by a predetermined communication method between the operation unit, the dosimeter, and the base station or the relay station, and notifies the monitoring apparatus of dose information at a predetermined sampling period, A transmission / reception unit for notifying the monitoring device of emergency notification information including information indicating an emergency when the emergency operation unit is operated, using the communication method of the predetermined sampling period .

  According to the embodiments of the disclosure, it is possible to immediately notify that an emergency situation has occurred when an emergency situation is found in a specific management area where goods cannot be carried in and out freely.

It is a schematic structure figure of a plant management system concerning this embodiment. It is a figure which shows an example of the area covered by a base station and a repeater. It is an external view of the dosimeter concerning this embodiment. It is an external view of the clip concerning this embodiment. It is a figure which illustrates the appearance (the 1) of protective clothing. It is a figure which illustrates the appearance (the 2) of protective clothing. It is a figure which shows the example (the 1) of mounting | wearing with the dosimeter to the protective clothing of FIG. It is a figure which shows the example (the 2) of mounting | wearing with the dosimeter to the protective clothing of FIG. It is a figure which shows the hardware structural example of the dosimeter which concerns on this embodiment. It is a functional block diagram of the dosimeter concerning this embodiment. It is a figure which shows the hardware structural example of the base station which concerns on this embodiment. It is a figure which shows the hardware structural example of the repeater which concerns on this embodiment. It is a figure which shows the hardware structural example of the monitoring apparatus which concerns on this embodiment. It is a figure which shows the hardware structural example of the plant control apparatus which concerns on this embodiment. It is a sequence chart which shows an example of operation | movement of the plant management system which concerns on this embodiment. It is a functional block diagram of the monitoring apparatus which concerns on this embodiment. It is a figure which shows an example of a visiting area table.

100a, 100b, 100c Dosimeter 102 Confirmation button 104 Upper selection button 106 Lower selection button 108 Clip 110 Screw 112 Auxiliary light emitting diode 113 Light emitting diode 114 Buzzer 116 Emergency button 118 Interface 120 Operation button 122, 124 Hook part 126 Display area 128 Light Spreading unit 130 Case 200 Base station 250 First communication network 300a, 300b, 300c Repeater 400 Monitoring device 402 Optical module 450 Second communication network 500 Plant control device 802 Transmission / reception unit 804 Operation input reception unit 806 Dose information generation unit 808 Emergency processing unit 810 Emergency notification information creation unit

Embodiments will be described below with reference to the drawings.
In all the drawings for explaining the embodiments, the same reference numerals are used for those having the same function, and repeated explanation is omitted.

<Example>
<Plant management system>
FIG. 1 shows an embodiment of a network configuration of a plant management system. Here, an example of a plant is a plant that handles radiation, such as a nuclear power plant. The plant management system includes a base station 200, a plurality of repeaters (300a, 300b, 300c), and a plurality of dosimeters (100a, 100b, 100c). In this embodiment, when an arbitrary repeater is shown among the repeaters (300a, 300b, 300c), it is described as “repeater 300”, and any of the dosimeters (100a, 100b, 100c) is When shown, it is described as “dosimeter 100”.

  In addition, although one base station 200 is illustrated in FIG. 1, the number of base stations 200 may be two or more. Moreover, although the three repeaters 300 are drawn in FIG. 1, the number of the repeaters 300 can be 1-2 or can be four or more. Moreover, although the three dosimeters 100 are drawn in FIG. 1, the number of the dosimeters 100 can be 1-2, or can be four or more.

  The base station 200 covers a first communication area in a predetermined area in the plant, and performs radio communication with the dosimeter 100 located in the first communication area. Furthermore, the base station 200 can perform wireless communication with the dosimeter 100 via the repeater 300 by performing wireless communication with the repeater 300. The base station 200 is connected to a first communication network 250 such as a LAN (Local Area Network) by a wired line such as an optical fiber 252.

  The repeater 300 is located in an area covered by the base station 200 in a predetermined area in the plant, performs radio communication with the base station 200, and cannot be covered in the first communication area covered by the base station 200. The second communication area including the area is covered. Of course, there is also an area where the first communication area and the second communication area overlap.

  FIG. 2 shows an example of an area covered by the base station 200 and the repeater 300. In the predetermined area 50 in the plant, the base station 200 is set to cover a wide area (first communication area) including the area of the central portion of the predetermined area 50, and the repeater 300 is set in the predetermined area 50. It is set to cover an area (second communication area) including an area that cannot be covered depending on the base station 200. Here, the area 50 may be one or a plurality of rooms with a plant, or may be an area of the entire predetermined floor. The repeater 300 is installed at a position where radio communication with the base station 200 is possible, and relays signals between the dosimeter 100 and the base station 200.

  The dosimeter 100 is a device that measures the radiation dose, and is used for managing the total exposure dose of radiation-related workers. The dosimeter 100 measures the radiation dose and transmits it to the monitoring device 400. The dose information transmitted by the dosimeter 100 is transmitted to the monitoring device 400 via the base station 200 or the repeater 300 and the base station 200. Further, the dosimeter 100 is equipped with an emergency button (Call Button), and when the emergency button is depressed, an emergency call is made to the monitoring device 400.

  Workers such as radiation workers are required to wear the dosimeter 100 in the management area. Therefore, a function to notify the monitoring device of an emergency is installed in a dosimeter that is carried even in a plant that generates radiation that cannot be freely carried in and out.

  The monitoring device 400 is connected to the first communication network 250 by a wired line such as an optical fiber 254, and monitors the state of the plant by monitoring the radiation dose included in the dose information transmitted by the dosimeter 100. For example, the monitoring device 400 is installed in a central control room and displays radiation dose information. By monitoring radiation dose information displayed on the monitoring device 400, an abnormality can be found. In addition, the monitoring device 400 is connected to a second communication network 450 such as a LAN and a wired line such as an optical fiber 452, and when an emergency call is made by the dosimeter 100, the emergency call is sent to the second communication network. 450 and the plant control apparatus 500 connected by wire such as an optical fiber 454 are notified. By making an emergency call from the dosimeter 100 to the monitoring device 400, a person who monitors the state of the plant using the monitoring device 400 can immediately know that it is an emergency.

  In response to the emergency notification notified by the monitoring device 400, the plant control device 500 operates an alarm system installed in the area where the dosimeter 100 where the emergency notification is made or operates other alarms other than the alarm system. Operate the system or report to the outside of the plant. Here, the monitoring device 400 and the plant control device 500 are not limited to the LAN, and may be connected by, for example, a dedicated line.

<Hardware Configuration of Embodiment>
Next, the hardware configuration of this embodiment will be described.

<Appearance of dosimeter 100>
FIGS. 3A and 3B are external views of the dosimeter 100 according to the present embodiment, in which (1) is a dosimeter perspective view (part 1), (2) is a dosimeter perspective view (part 2), and (3) is a dosimeter. Perspective views (No. 3) and (4) are dosimeter perspective views (No. 4). The longitudinal direction of the dosimeter 100 will be described as the Z-axis direction, the direction orthogonal to the Z-axis direction in the horizontal plane as the Y-axis direction, and the direction orthogonal to the Z-axis direction and the Y-axis direction will be described as the X-axis direction. Hereinafter, for the convenience of explanation, in the dosimeter perspective view (Part 1), a view from the Y-axis direction is referred to as a front surface, and a surface opposite to the front surface is referred to as a back surface.

  As shown in FIG. 3, the dosimeter 100 includes a housing 130 and a clip 108. Among these, as shown in a dosimeter perspective view (part 1) and a dosimeter perspective view (part 3), an operation button 120 is provided on the left side surface of the housing 130. The operation button 120 includes a confirmation button 102, an upper selection button 104, and a lower selection button 106. The dosimeter 100 is activated by pressing the enter button 102 for a long time. After the dosimeter 100 is activated, an operation such as changing the display content can be selected by pressing the upper selection button 104 or the lower selection button 106, and the upper selection button 104 or the lower selection can be selected by pressing the confirmation button 102. The operation selected by the button 106 can be confirmed.

  Further, as shown in the dosimeter perspective view (No. 2) and the dosimeter perspective view (No. 4), an emergency button 116 is provided on the right side surface of the housing 130. By pressing the emergency button 116, an emergency call is made from the dosimeter 100 to the monitoring device 400. That is, it is possible to make an emergency call to the monitoring device 400 by pressing the emergency button 116 once (one touch). It is also possible to make an emergency call to the monitoring device 400 by pressing and holding the emergency button 116. Until now, it has been impossible to attach an emergency button 116 to the dosimeter 100 or make an emergency call from the dosimeter 100.

  Furthermore, an interface 118 such as a USB (Universal Serial Bus) for connecting the dosimeter 100 to the outside such as a peripheral device is provided on the right side surface of the housing 130. An external power supply can be connected to the interface 118. Thereby, since the dosimeter 100 can be operated by an external power source, the battery of the dosimeter 100 can be made to last longer. This is effective when the dosimeter 100 is installed and used in a plant.

  In addition, as shown in the dosimeter perspective view (part 1), the dosimeter perspective view (part 2), and the dosimeter perspective view (part 3), the housing 130 is provided with a display area 126, When the radiation dose is measured by the meter 100, the dose information is displayed. Further, in a region adjacent to the display region 126 (for example, a region represented by the X-axis direction and the Y-axis direction), a milky white light diffusing unit 128 formed by embossing is provided.

  A light emitting element such as a light emitting diode (LED) 113 is provided below the light diffusing unit 128 (in the Z-axis direction). An auxiliary light emitting element such as an auxiliary light emitting diode (LED) 112 is provided in the left-right direction (Y-axis direction) of the display area 126.

  The light emitting diode 113 emits light when the radiation dose measured by the dosimeter 100 exceeds a preset threshold value. Since the light emitted from the light emitting diode 113 is diffused by the light diffusing unit 128, it appears that the entire light diffusing unit 128 is lit (emitted) when the light emitting diode 113 emits light. Accordingly, the user of the dosimeter 100 can know that the dose of the surrounding radiation has exceeded the threshold without looking at the dose value displayed in the display area 126, and immediately take an appropriate action. be able to.

  The light emitting diode 113 emits light when the emergency button 116 is pushed down. Since the light diffusing portion 128 is provided immediately above the light emitting diode 113, it appears that the entire light diffusing portion 128 is lit (emitted) when the light emitting diode 113 emits light. As a result, it is possible to notify surrounding people that an abnormality has occurred.

  In the present embodiment, the auxiliary light emitting diode 112 has a general window structure immediately above it. The dosimeter 100 is configured so that the light emitted from the auxiliary light emitting diode 112 is not transmitted to the light diffusion unit 128. The auxiliary light emitting diode 112 is used to notify the battery remaining amount and the like.

  Further, as shown in the dosimeter perspective view (Part 1) and the dosimeter perspective view (Part 2), the housing 130 is provided with a buzzer 114, and the dose of radiation measured by the dosimeter 100 is previously measured. Sounds when the set threshold is exceeded. As a result, the user of the dosimeter 100 can know that the dose of ambient radiation has exceeded the threshold, and can take an appropriate action immediately. Further, the buzzer 114 generates a sound when the emergency button 116 is pressed down. As a result, it is possible to notify surrounding people that an abnormality has occurred.

  Further, as shown in the perspective view of the dosimeter (No. 3) and the perspective view of the dosimeter (No. 4), the clip 108 is attached to the housing 130 by being fixed by a fixing jig such as a screw 110. It is done. When the dosimeter 100 is used, the clip 108 is for fixing by hooking on a protective garment. As shown in the dosimeter perspective view (Part 1) -dosimeter perspective view (Part 4), the clip 108 is formed with hooks 122 and 124 such as insertion ports on both the front surface and the back surface. . As a result, the dosimeter 100 is used in a breast pocket or the like of a protective suit, so the hook 122 on the front side of the dosimeter 100 is hooked on the chest pocket, and the dosimeter 100 is accommodated in the chest pocket. Alternatively, the hook 124 on the back side of the dosimeter 100 can be hooked in the breast pocket and used in a state of being accommodated in the breast pocket.

  This will be specifically described.

  FIG. 4 is an external view of the clip 108 according to the present embodiment, (1) is a perspective view of the clip (part 1), (2) is a perspective view of the clip (part 2), and (3) is a perspective view of the clip (part 2). 3) and (4) are clip perspective views (part 4). As described above, the hooks 122 and 124 are integrally formed on the clip 108.

  5 and 6 show an example of the protective clothing 10. The protective clothing 10 is integrally formed in the shape of a tie, and includes a body portion 12, a pair of sleeve portions 14, a pair of legs 16, and a hood 18.

  In the example of FIG. 5, the body portion 12 has a breast pocket 20 a on the outer side, that is, the outer side of the protective clothing 10, and in the example of FIG. 6, the trunk portion 12 has a breast pocket 20 b on the inner side of the protective clothing 10. The hood 18 is formed so as to cover the entire head except for both eyes and nose. Also, a fastener 22 for opening and closing and attaching / detaching is provided from the crotch portion of the body portion 12 to the hood 18.

  The wearing position of the dosimeter 100 is determined at predetermined positions such as the breast pockets 20a and 20b of the protective clothing, and the direction when the dosimeter 100 is worn is also determined. In this embodiment, the direction when the dosimeter 100 is worn is positive when the hook portion 124 on the side fixed by a fixing jig such as the screw 110 is on the human body side.

  FIG. 7 shows an example (part 1) of mounting a dosimeter on the protective clothing 10 of FIG. In the example shown in FIG. 7, the hook 122 is hooked on the breast pocket 20a, and the dosimeter housing 130 is mounted inside the breast pocket 20a.

  FIG. 8 shows an example (part 2) of mounting the dosimeter 100 on the protective clothing 10 of FIG. In the example shown in FIG. 8, the hook 124 is hooked on the breast pocket 20b, and the dosimeter housing 130 is mounted inside the breast pocket 20b.

  Therefore, even when the breast pockets 20a and 20b are formed on either the outer surface or the lining, the dosimeter 100 can be accommodated in the breast pockets 20a and 20b while keeping the dosimeter 100 in a predetermined direction.

<Hardware configuration example of dosimeter 100>
FIG. 9 is a hardware configuration diagram of the dosimeter 100 according to the present embodiment. The dosimeter 100 includes a control unit 152, a storage unit 154, a display unit 156, an operation unit 158, an emergency operation unit 160, a light alarm unit 162, and a sound alarm unit 164. Furthermore, the dosimeter 100 has an address for electrically connecting the dose measuring unit 166, the I / O port 168, the wireless communication unit 170, the positioning unit 172, and each of the above components as shown in FIG. A bus line 180 such as a bus or a data bus is provided.

  The control unit 152 includes a central processing unit (CPU) and the like, and controls the entire dosimeter 100. The storage unit 154 includes a ROM that stores a program used for driving the CPU, a RAM that is used as a work area for the CPU, and the like. The display unit 156 has a display area 126 shown in FIG. 3 and is composed of a liquid crystal display, an organic EL display, and the like and a controller thereof, and displays information such as dose information to a worker so as to be visible. The operation unit 158 includes an operation button 120 (see FIG. 3) provided on the right side surface of the housing 130 of the dosimeter 100, and is used for operating the dosimeter 100.

  The emergency operation unit 160 is a push button such as an emergency button 116 (see FIG. 3) provided on the left side surface of the housing 130 of the dosimeter 100, and is formed without the upper portion of the emergency button 116 protruding from the left side surface. Has been. This can prevent the emergency button 116 from being pushed by mistake.

  The light alarm unit 162 includes a light emitting diode 113 and an auxiliary light emitting diode 112. The light alarm unit 162 performs light alarm by causing the light emitting diode 113 and the auxiliary light emitting diode 112 to emit light. When the light emitting diode 113 is caused to emit light, the light is diffused by the light diffusing unit 128, so that the entire periphery of the display area 126 looks as if it is emitting light. The sound alarm unit 164 is configured by a sound alarm device such as the buzzer 114 and generates an alarm.

  The dose measuring unit 166 is configured by a detector such as a semiconductor detector, and measures the exposure dose. For example, the dose measuring unit 166 measures the dose value by counting the incident radiation and converting the count value into a dose.

  The I / O port 168 includes an interface 118 such as a USB, and is connected to the outside such as a peripheral device.

  The radio communication unit 170 performs radio communication with the base station 200 or the repeater 300. Thus, dose information measured by the dosimeter 100 can be notified to the monitoring device 400, and an emergency call can be made to the monitoring device 400 when the emergency button 116 of the dosimeter 100 is pushed down. Between the dosimeter 100, the base station 200, and the repeater 300, for example, a multi-channel access wireless technology at a predetermined frequency such as 900 MHz or a wireless LAN such as Wi-Fi (Wi-Fi: Wireless Fidelity) can be applied.

  The positioning unit 172 measures the position of the dosimeter 100. For the positioning unit 172, a positioning technology such as a global positioning system (GPS) or a three-point surveying can be applied.

<Functional Configuration of Embodiment>
Next, the functional configuration of this embodiment will be described. FIG. 10 is a functional block diagram of the dosimeter 100 of the present embodiment.

  The dosimeter 100 includes a transmission / reception unit 802, an operation input reception unit 804, a dose information creation unit 806, an emergency processing unit 808, and an emergency notification information creation unit 810. Each of these units operates in response to a command from the CPU of the control unit 152 according to a dosimeter program developed from the ROM of the storage unit 154 to the RAM, and any of the components shown in FIG. It is a function or means realized by this.

  The transmission / reception unit 802 of the dosimeter 100 shown in FIG. 10 is realized by the command from the control unit 152 shown in FIG. 9 and the wireless communication unit 170 shown in FIG. Various data (or information) is transmitted / received to / from the monitoring apparatus 400 via the network 250.

  The operation input receiving unit 804 of the dosimeter 100 is realized by a command from the control unit 152 shown in FIG. 9 and the operation unit 158 and the emergency operation unit 160 shown in FIG. Accept input. For example, when the user depresses one of the operation buttons 120 constituting the operation unit 158 shown in FIG. 9, the operation input receiving unit 804 shown in FIG. 10 receives the operation and operates. . Further, for example, when the user depresses the emergency button 116 constituting the emergency operation unit 160 shown in FIG. 9, the operation input receiving unit 804 shown in FIG. The emergency processing unit 808 is notified that the button 116 has been depressed.

  The dose information creation unit 806 of the dosimeter 100 is realized by the command from the control unit 152 shown in FIG. 9 and the dose measurement unit 166 shown in FIG. 9, and the radiation measured by the dose measurement unit 166. The dose information accompanied with the dose value is generated and input to the transmission / reception unit 802. The transmission / reception unit 802 transmits the dose information input by the dose information creation unit 806 to the monitoring device 400. The dose information creation unit 806 creates dose information accompanied by the radiation dose values measured by the dose measurement unit 166 at a predetermined sampling period of 10 seconds, 1 minute, 10 minutes, or the like.

  The emergency processing unit 808 of the dosimeter 100 is realized by a command from the control unit 152 shown in FIG. 9, and when the operation input receiving unit 804 is notified that the emergency button 116 is pushed down, The total 100 is shifted from the normal mode to the emergency mode. When the emergency processing unit 808 shifts the dosimeter 100 to the emergency mode, the emergency processing unit 808 instructs the emergency notification information creation unit 810 to create emergency notification information. Further, the emergency processing unit 808 displays “Emergency” on the display area 126 of the display unit 156, causes the sound alarm unit 164 to sound an alarm, and causes the light alarm unit 162 to emit light. As a result, it is possible to notify surrounding people of an emergency. Further, a vibrator is mounted on the dosimeter 100, and the emergency processing unit 808 can operate the vibrator. Thereby, the user of the dosimeter 100 can confirm that the dosimeter 100 has shifted to the emergency mode even in a situation where the surrounding sound is loud and it is difficult to hear the sound emitted by the sound alarm unit 164.

  The emergency notification information creation unit 810 of the dosimeter 100 is realized by an instruction from the control unit 152 illustrated in FIG. 9, and when the emergency processing unit 808 instructs to create emergency notification information, Notification information is created and input to the transmission / reception unit 802. The transmission / reception unit 802 transmits the emergency notification information input by the emergency notification information creation unit 810 to the monitoring device 400.

  The emergency notification information stores information of about several tens of bytes, and is accompanied by dosimeter identification information, information indicating an emergency, time information, dose information, and the like. Further, the position information of the dosimeter 100 measured by the positioning unit 172 can be attached.

<Example of Hardware Configuration of Base Station 200>
FIG. 11 is a hardware configuration diagram of the base station 200 according to the present embodiment. The base station 200 includes an optical module 202, an RF module 204, a CPU 206, a memory 208, and a bus line 210 such as an address bus and a data bus for electrically connecting the above components as shown in FIG. It has.

  The optical module 202 converts an electrical signal into an optical signal under the control of the CPU 206, and transmits the optical signal to the monitoring device 400 via the first communication network 250. Further, the optical module 202 converts the optical signal transmitted by the monitoring device 400 into an electrical signal according to control by the CPU 206 and inputs the electrical signal to the CPU 206.

  The RF module 204 converts the baseband signal from the CPU 206 into a radio signal under the control of the CPU 206 and transmits the radio signal to the dosimeter 100 or the repeater 300. Further, the RF module 204 converts a radio signal transmitted from the dosimeter 100 or the repeater 300 into a baseband signal according to control by the CPU 206 and inputs the baseband signal to the CPU 206.

  The CPU 206 controls the entire base station 200, receives dose information and emergency notification information transmitted by the dosimeter 100, and receives dose information and emergency notification information relayed by the repeater 300. Further, the CPU 206 transmits the emergency notification information transmitted by the dosimeter 100 to the monitoring device 400 and transmits the emergency notification information relayed by the relay device 300 to the monitoring device 400. The memory 208 includes a ROM that stores a program used for driving the CPU 206, a RAM that is used as a work area for the CPU 206, and the like.

<Hardware configuration example of repeater 300>
FIG. 12 is a hardware configuration diagram of the repeater 300 according to the present embodiment. The repeater 300 includes an RF module 302, a CPU 304, a memory 306, and a bus line 308 such as an address bus and a data bus for electrically connecting the above components as shown in FIG. .

  The RF module 302 converts the baseband signal from the CPU 304 into a radio signal under the control of the CPU 304 and transmits it to the dosimeter 100. Further, the RF module 302 converts a radio signal transmitted by the dosimeter 100 into a baseband signal according to control by the CPU 304 and inputs the baseband signal to the CPU 304.

  The CPU 304 controls the entire repeater 300, relays the dose information and emergency notification information transmitted by the dosimeter 100 to the base station 200, and transmits a signal transmitted by the base station 200 to the dosimeter 100. . The memory 306 includes a ROM that stores a program used to drive the CPU 304, a RAM that is used as a work area for the CPU 304, and the like.

<Hardware Configuration Example of Monitoring Device 400>
FIG. 13 is a hardware configuration diagram of the monitoring apparatus 400 according to the present embodiment. The monitoring device 400 includes an optical module 402, a CPU 404, a display device 406, a memory 408, and a bus line 410 such as an address bus and a data bus for electrically connecting the above components as shown in FIG. It has. The optical module 402 is an example of a notification unit.

  The optical module 402 converts the optical signal transmitted by the base station 200 into an electrical signal according to control by the CPU 404 and inputs the electrical signal to the CPU 404. The optical module 402 converts an electrical signal into an optical signal according to control by the CPU 404 and transmits the optical signal to the plant control apparatus 500 via the second communication network 450.

  The CPU 404 controls the entire monitoring apparatus 400, receives dose information and emergency notification information transmitted by the base station 200, and transmits the emergency notification information to the plant control apparatus 500. Further, the CPU 404 displays the dose of the dosimeter 100 on the display device 406 based on the dose information. The monitoring device 400 monitors the dose of all dosimeters 100 in the plant.

  The display device 406 displays the dose according to the control of the CPU 404. Thereby, the dose measured by the dosimeter 100 can be monitored.

  The memory 408 includes a ROM that stores a program used for driving the CPU 404, a RAM used as a work area for the CPU 404, and the like.

<Hardware configuration example of plant control device 500>
FIG. 14 is a hardware configuration diagram of the plant control device 500 according to the present embodiment. The plant management apparatus 500 includes an optical module 502, a CPU 504, a memory 506, and a bus line 508 such as an address bus and a data bus for electrically connecting the above-described components as shown in FIG. Yes.

  The optical module 502 converts the optical signal transmitted by the monitoring device 400 into an electrical signal according to control by the CPU 504 and inputs the electrical signal to the CPU 504.

  The CPU 504 controls the entire plant control apparatus 500, identifies the area where the dosimeter 100 that transmitted emergency notification information is located based on the emergency notification information transmitted by the monitoring apparatus 400, and alarms for the identified area Take appropriate measures such as operating the system. For example, the base station 200 or the repeater 300 that covers the area where the dosimeter that transmitted the emergency notification information is located can be specified, and the position can be regarded as the position of the dosimeter 100 and processed. Moreover, when the positional information of the dosimeter 100 of emergency notification information is attached, it can process based on the position.

  The memory 506 includes a ROM that stores a program used to drive the CPU 504, a RAM that is used as a work area for the CPU 504, and the like.

<Operation of plant management system>
FIG. 15 is a sequence chart showing the operation of the plant management system according to the present embodiment. In the example shown in FIG. 15, a case will be described in which the user of the dosimeter 100 b finds an abnormality among the users of the dosimeters 100 a to 100 c and pushes down the emergency button 116. In the normal mode, the dosimeters 100a, 100b, and 100c transmit dose information to the monitoring device 400 at a predetermined sampling period.

  In step S1402, the dose information creation unit 806 of the dosimeter 100a creates dose information and inputs it to the transmission / reception unit 802. The transmission / reception unit 802 transmits the dose information input by the dose information creation unit 806 to the monitoring device 400.

  In step S1404, the dose information creation unit 806 of the dosimeter 100b creates dose information and inputs it to the transmission / reception unit 802. The transmission / reception unit 802 transmits the dose information input by the dose information creation unit 806 to the monitoring device 400.

  In step S1406, the dose information creation unit 806 of the dosimeter 100c creates dose information and inputs it to the transmission / reception unit 802. The transmission / reception unit 802 transmits the dose information input by the dose information creation unit 806 to the monitoring device 400.

  In step S1408, the display device 406 of the monitoring device 400 displays dose information according to control by the CPU 404.

  In step S1410, the dose information creation unit 806 of the dosimeter 100a creates dose information and inputs it to the transmission / reception unit 802. The transmission / reception unit 802 transmits the dose information input by the dose information creation unit 806 to the monitoring device 400.

  In step S1412, the operation input accepting unit 804 of the dosimeter 100b accepts that the emergency button 116 is pushed down by the user.

  In step S1414, the dose information creation unit 806 of the dosimeter 100c creates dose information and inputs it to the transmission / reception unit 802. The transmission / reception unit 802 transmits the dose information input by the dose information creation unit 806 to the monitoring device 400.

  In step S1416, the emergency processing unit 808 of the dosimeter 100b shifts the dosimeter 100b to the emergency mode.

  In step S1418, the emergency notification information creation unit 810 of the dosimeter 100b creates emergency notification information and inputs it to the transmission / reception unit 802. The transmission / reception unit 802 transmits the emergency notification information input by the emergency notification information creation unit 810 to the monitoring device 400.

  In step S1420, the emergency notification information transmitted by the dosimeter 100b is received by the optical module 402 of the monitoring apparatus 400 and input to the CPU 404. The CPU 404 inputs the emergency notification information to the optical module 402 and transmits it to the plant control apparatus 500. The transmission of the emergency notification information to the plant control device 500 may be performed by an input process for the monitoring device 400.

  In step S <b> 1422, the emergency notification information transmitted by the monitoring device 400 is received by the optical module 502 of the plant control device 500. In the plant control apparatus 500, the area where the dosimeter 100b is located is specified based on the identification information of the dosimeter 100b attached to the emergency notification information. For example, the CPU 504 can set the area covered by the base station 200 in which the dosimeter 100b is located or the repeater 300 as the area where the dosimeter 100b is located. In addition, the CPU 504 specifies the position of the dosimeter 100 based on the position information of the dosimeter 100 attached to the emergency notification information.

  In step S1424, the plant control apparatus 500 operates the alarm system based on the position of the dosimeter 100 specified in step 1422.

  In step S1426, the emergency processing unit 808 of the dosimeter 100b causes the display unit 156 to display “Emergency”.

  In step S1428, the emergency processing unit 808 of the dosimeter 100b causes the sound alarm unit 164 to sound.

  In step S1430, the emergency processing unit 808 of the dosimeter 100b causes the light alarm unit 162 to sound.

  In step S1432, the emergency processing unit 808 of the dosimeter 100b vibrates the dosimeter 100.

  Processing can be performed in a different order from the sequence chart shown in FIG. For example, the process of steps S1422-S1424 and the process of steps S1426-S1432 can be executed in parallel. Further, the processes in steps S1426 to S1432 can be performed in different orders, or can be performed simultaneously. Further, the dosimeters 100a and 100c in which the emergency button 116 is not pressed down can continue to notify the dose information. Moreover, the process of step S1402-S1406 can also be transmitted as a response with respect to the dose information notification request | requirement which requests | requires notifying of dose information from the monitoring apparatus 400. FIG.

  According to the plant management system of the present embodiment, an emergency button is provided on the dosimeter, and an emergency call can be made to the monitoring device by depressing the emergency button once. When an abnormality is discovered, the monitoring device can be notified of an emergency, and a higher-level device that supervises a system such as a plant control device can also be notified of an emergency.

<Second embodiment>
In the plant management system according to the present embodiment, the monitoring apparatus 400 that has received the emergency notification information transmits emergency mode transition instruction information that causes the other dosimeters other than the dosimeter that has transmitted the emergency notification information to transition to the emergency mode. The other dosimeters that have received the emergency mode shift instruction information shift to the emergency mode.

  The plant management system according to the present embodiment is different from the plant management system according to the above-described embodiment in the functions of the monitoring device 400.

  A plant management system monitoring apparatus 600 according to the present embodiment will be described.

  FIG. 13 can be applied to the hardware configuration of the monitoring apparatus 600.

<Functional Configuration of Embodiment>
Next, the functional configuration of this embodiment will be described. FIG. 16 is a functional block diagram of the monitoring apparatus 600 of the present embodiment.

  The monitoring device 600 includes a transmission / reception unit 602, a storage / read processing unit 604, a storage unit 606, an emergency notification information analysis unit 608, and an emergency mode transition instruction information creation unit 610. Each of these units operates according to a command from the CPU 404 in accordance with a monitoring device program developed on the RAM from the ROM of the memory 408 shown in FIG. It is a function or means realized by.

  The transmission / reception unit 602 of the monitoring device 600 shown in FIG. 16 is realized by the command from the CPU 404 shown in FIG. 13 and the optical module 402 shown in FIG. Via the base station 200, various data (or information) is transmitted / received.

  The storage / reading processing unit 604 of the monitoring device 600 is realized by the instruction from the CPU 404 shown in FIG. 13 and the memory 408 shown in FIG. 13, and stores various data in the memory 408 or the memory 408. The process which reads the various data memorize | stored in is performed.

  The storage unit 606 of the monitoring device 600 is realized by the memory 408 illustrated in FIG. 13, and stores a visited area DB 6062.

(Area area table)
In the storage unit 606, a visiting area DB 6062 configured by a visiting area table as shown in FIG. 17 is constructed. In this area table, each dosimeter 100 is provided for each piece of identification information such as a dosimeter ID of each dosimeter 100 (in FIG. 17, for convenience of explanation, it is represented by dosimeters 100a, 100b, and 100c). Device information such as the base station 200 and the repeater 300 that are in service is associated with each other and managed. For example, in the located area table shown in FIG. 17, it is indicated that the dosimeter 100a is located in the repeater 300a.

  The emergency notification information analysis unit 608 of the monitoring device 600 shown in FIG. 16 is realized by a command from the CPU 404 shown in FIG. The dosimeter that transmitted the information is identified and input to the emergency mode transition instruction information creation unit 610. Further, the emergency notification information analysis unit 608 can input the location information to the emergency mode transition instruction information creation unit 610 when the location information of the dosimeter 100 is attached to the emergency notification information.

  The emergency mode transition instruction information creation unit 610 of the monitoring device 600 shown in FIG. 16 is realized by the command from the CPU 404 shown in FIG. 13 and receives emergency notification information input by the emergency notification information analysis unit 608. The in-zone device of the transmitted dosimeter is acquired from the in-zone area DB, emergency mode transition instruction information destined for the in-zone device is created and input to the transmission / reception unit 602. The transmission / reception unit 602 transmits the emergency mode transition instruction information input by the emergency mode transition instruction information creation unit 610. In addition, when the position information of the dosimeter 100 is input by the emergency notification information analysis unit 608, the emergency mode transition instruction information creation unit 610 has a base station 200 and a repeater 300 installed in the vicinity of the position. Can be generated, and emergency mode transition instruction information destined for one or both of the base station 200 and the repeater 300 can be created.

  The base station 200 or the repeater 300 that has received the emergency mode transition instruction information broadcasts the emergency mode transition instruction information to an area covered by the base station 200 or the repeater 300.

  The dosimeter 100 that has received the emergency mode shift instruction information transmitted by the base station 200 or the repeater 300 shifts to the emergency mode. Specifically, the emergency mode transition instruction information is received by the transmission / reception unit 802 of the dosimeter 100 and input to the emergency processing unit 808. The emergency processing unit 808 shifts to the emergency mode based on the emergency mode shift instruction information input by the transmission / reception unit 802. The process described above can be applied to the process after shifting to the emergency mode. As a result, the dosimeter located in the vicinity of the dosimeter 100 that has transmitted the emergency notification information can be surely shifted to the emergency mode, and the worker using the dosimeter located in the vicinity is in an emergency state. Can be notified.

  It is also possible to notify the dosimeter located in the area around the area where the dosimeter where the emergency notification information has been transmitted is in place of an emergency without shifting to the emergency mode. As a result, the emergency system can be immediately promoted for the area around the dosimeter that has transmitted the emergency notification information, and only other information can be transmitted to other parts.

  Moreover, when the monitoring apparatus 400 develops emergency information to an alarm system installed in the plant based on the position information of the dosimeter 100 that has transmitted the emergency notification information, the monitoring apparatus 400 provides a difference based on the position information. As described above, it is also possible to notify the plant control apparatus 500. For example, the area around the dosimeter that has transmitted the emergency notification information can be immediately urged to take an emergency system, and the other areas can be notified so as to have a difference such as only transmitting information.

<Third embodiment>
In the plant management system according to the present embodiment, when the emergency button 116 is pressed down, the dosimeter 100 makes an emergency call to the monitoring device 400 and also makes an emergency call to other adjacent dosimeters. is there. For communication between a dosimeter and another adjacent dosimeter, a technique that allows dosimeters such as an ad hoc mode in a wireless LAN to directly communicate with each other can be applied.

  The plant management system according to the present embodiment is different in function of the dosimeter 100 from the plant management system according to the above-described embodiment.

  As a functional block diagram of the dosimeter 100, FIG. 10 can be applied. The emergency notification information creation unit 810 of the dosimeter 100 is realized by an instruction from the control unit 152 illustrated in FIG. 9, and when the emergency processing unit 808 instructs to create emergency notification information, Notification information is created and input to the transmission / reception unit 802. The transmission / reception unit 802 transmits the emergency notification information input by the emergency processing unit 808 to the monitoring device 400 and an adjacent dosimeter. Thereby, since an emergency call can be transmitted and received between dosimeters without going through the base station 200, other dosimeters can be notified quickly of an emergency. For this reason, the notified operator of the other dosimeters can take an appropriate response quickly.

  In the above-described embodiment, the emergency button of the dosimeter has a large natural disaster when, for example, a serious accident or terrorism occurs, an abnormality occurs in a plant other than the plant that handles radiation, or an operator is injured. In case of radioactive contamination, it is used for other emergency situations. By pressing the emergency button once, it is now possible to make an emergency call to the monitoring device. In the above case, when an abnormality is found, the monitoring device can be immediately notified of an emergency, and the plant It is possible to notify a host device that supervises a system such as a device that an emergency has occurred.

  When the situation described above occurs, abnormalities such as operator shaking and injury are assumed, so it is possible to report and contact the monitoring device or higher-level device with one touch instead of complicated operation. The configuration of the embodiment is effective.

  Although the present invention has been described above with reference to specific embodiments and modifications, each embodiment and modification is merely illustrative, and those skilled in the art will recognize various modifications, modifications, alternatives, and substitutions. You will understand examples. For convenience of explanation, an apparatus according to an embodiment of the present invention has been described using a functional block diagram, but such an apparatus may be implemented in hardware, software, or a combination thereof. The present invention is not limited to the above-described embodiments, and various variations, modifications, alternatives, substitutions, and the like are included without departing from the spirit of the present invention.

Claims (13)

A dosimeter for measuring a dose,
An operation unit used to operate the dosimeter;
An emergency operation unit provided in a housing of the dosimeter different from the operation unit;
A transmission / reception unit that transmits and receives data between the dosimeter and a base station or a relay station using a predetermined communication method, and notifies the monitoring device of dose information at a predetermined sampling period, and the emergency operation unit A transmission / reception unit for notifying the monitoring device of emergency notification information including information indicating an emergency when the operation is performed using the communication method of the predetermined sampling period;
A dosimeter characterized by comprising:   2. The dosimeter according to claim 1, wherein the transmission / reception unit transmits the emergency notification information using a base station or a relay station and a frequency used to transmit the dose information at the sampling period.   The emergency operation unit is a push button,
  The operation input to the emergency operation unit is one-touch,
  The dosimeter according to claim 1 or 2, wherein the one-touch is one-time depression or long-pressing of the push button.   The emergency operation unit is a push button formed without protruding from the housing surface of the dosimeter, and the housing surface has an edge protruding around the push button from the surface of the push button. The dosimeter according to any one of claims 1 to 3, wherein:   Hook that hooks the dosimeter on clothes
  The dosimeter according to any one of claims 1 to 4, further comprising: When detecting an operation input to the front Symbol emergency operation section, any one of claim 1, further comprising a controller for shifting to the emergency mode indicating that a state of emergency to the outside of the 5 one Dosimeter as described in section.   The emergency notification information further includes one or more of identification information of the dosimeter, dose information of the dosimeter, or time information. Dosimeter. A positioning unit for measuring the position of the dosimeter;
Dosimeter according to claim 1, further comprising a control unit for transmitting the emergency notification information including location information which is positioning the front Symbol positioning unit. A plant management system having one or a plurality of dosimeters and monitoring device for measuring a dose,
Each of the one or more dosimeters is
An operation unit used to operate the dosimeter;
An emergency operation unit provided in a housing of the dosimeter different from the operation unit;
A wireless communication unit communicating with the monitoring device;
A transmission / reception unit that transmits and receives data between the dosimeter and a base station or a relay station by a predetermined communication method, and notifies the monitoring device of dose information at a predetermined sampling period and performs the emergency operation. A transmission / reception unit for notifying the monitoring device of emergency notification information including information indicating an emergency when the unit is operated by the communication method of the predetermined sampling period;
A plant management system comprising:   The plant management system is based on the emergency notification information transmitted from the dosimeter.
  The plant management system according to claim 9, wherein an alarm system installed in the plant is operated.   The monitoring device
  Based on the emergency notification information, an emergency mode for creating emergency mode transition instruction information for transferring a dosimeter other than the dosimeter that has transmitted the emergency notification information to an emergency mode for notifying an emergency to the outside. A transition instruction information creation unit;
  A transmission / reception unit for transmitting the emergency mode transition instruction information to the other dosimeters;
  The plant management system according to claim 9, further comprising:   When an operation input to the emergency operation unit is detected, based on position information included in the emergency notification information, an area in which the dosimeter that has transmitted the emergency notification information is located is specified, and the area is covered. The plant management system according to claim 9, wherein a base station, a repeater, or both of the base station and the relay station are identified.   When an operation input to the emergency operation unit is detected, the dosimeter that has detected the operation input is different from the dosimeter in addition to causing the wireless communication unit to transmit dose information to the monitoring device. The plant management system according to claim 9, wherein an emergency call is made to the dosimeter.

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