JP2006084325A - Radiation measuring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiation measuring system which can perform monitoring with a proper cycle even when measured values greatly fluctuate and can reduce battery drain. <P>SOLUTION: The radiation measuring system comprises a battery-operated radiation measuring instrument 100 for measuring a radiation dose and a radiation management apparatus 101 for managing the measured value of the measured radiation dose. The system is provided with a processor 6 (or a processor 21) which transmits instructions to a power ON/OFF discriminating control apparatus 9 so that the cycle of a power ON instruction of the radiation measuring instrument 100 is lengthened when the measured value of the radiation dose measured by the radiation measuring instrument 100 is within a predetermined range and that the cycle of the power ON instruction of the radiation measuring instrument 100 is shortened when the measured value exceeds the predetermined range. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a radiation measurement system, and more particularly to a radiation measurement system for measuring a radiation dose around a nuclear power plant or the like.

  Conventionally, in a radiation handling facility such as a nuclear power plant, environmental radiation is monitored (monitored) around the facility for radiation protection of the public. For such monitoring, it has been proposed that a radiation measurement system called an environmental radiation monitor be installed around the facility (see, for example, Patent Document 1).

  Conventionally, since the power consumption of the radiation measuring instrument is relatively large, there are few measuring instruments driven by a battery. Therefore, when the physical quantity is measured remotely, the necessary power source is secured by laying the power cable.

  In recent years, electronic circuits have progressed, and miniaturization, light weight, and low power consumption have been realized, and many types of measuring instruments in various fields are small and portable by battery operation. In addition, it is no longer impossible for portable measuring instruments to have the same performance, characteristics, and functions as before, so it is possible to build a high-performance measuring system that is permanently installed with portable measuring instruments. It has become a situation.

  Furthermore, receiving and transmitting devices such as PHS data communication can be easily obtained at a low price, and remote monitoring can be easily realized by attaching a PHS transmitter to a measuring instrument and connecting a computer to a telephone jack. In this technical environment, portable measuring instruments can be easily installed on-site or on-site, and inexpensive temporary monitoring equipment that does not require wiring work or installation work can be constructed.

  However, with regard to batteries, although large-capacity lithium-ion batteries and the like have appeared, the battery life is not so long for any product, and the capacity to operate the measuring instrument for a long period of time cannot be secured. Is not negligible. Also, in environments where it is difficult for people to approach (under high radiation, toxic gas, darkness, etc.), it is desirable to reduce the number of battery replacement operations as much as possible.

Japanese Patent No. 3153484

  As described above, the conventional measuring instrument has a problem that it is difficult to shift to a battery-powered measuring instrument because the power consumption of the measuring instrument is relatively large. In addition, the battery-driven measuring device has a problem that the life of the battery is not so long in any product, and the capacity for operating the measuring device for a long time cannot be secured.

  For this reason, there is a problem that maintenance work for battery replacement is expensive and it is difficult to replace the battery in environments where it is difficult for humans to access (under high radiation, toxic gas, darkness, etc.). It was.

  The present invention has been made to solve such a problem, and even when the fluctuation of the measured value is severe, it is possible to monitor at an appropriate cycle and to suppress the consumption of the battery. The aim is to obtain a radiation measurement system.

  The present invention is a radiation measurement system comprising a battery-powered radiation measurement device for measuring radiation dose and a radiation management device for managing the measured value of the measured radiation dose, which is measured by the radiation measurement device. When the measured value of the radiation dose is within a predetermined range, the cycle of the power ON command of the radiation measuring device is lengthened, and when the measured value exceeds the predetermined range, the power of the radiation measuring device is turned ON. It is a radiation measurement system provided with a control means for shortening a command cycle.

  The present invention is a radiation measurement system comprising a battery-powered radiation measurement device for measuring radiation dose and a radiation management device for managing the measured value of the measured radiation dose, which is measured by the radiation measurement device. When the measured value of the radiation dose is within a predetermined range, the cycle of the power ON command of the radiation measuring device is lengthened, and when the measured value exceeds the predetermined range, the power of the radiation measuring device is turned ON. Since this is a radiation measurement system equipped with a control means that shortens the command cycle, the measurement value fluctuates significantly in order to control the radiation dose measurement cycle to be longer or shorter according to the measurement variation. Even in the case, it is possible to monitor at an appropriate cycle and suppress battery consumption.

Embodiment 1 FIG.
The radiation measurement system of the present invention includes, for example, a nuclear power plant, a radioisotope manufacturing field, medical treatment using radiation or radioactivity, a research institution, a nuclear fuel reprocessing plant, an industrial field using radiation, weather observation, pollution monitoring, This system can be applied when measuring radiation in a wide range of fields such as chemical plants, civil engineering management, and agriculture.

  1 is a configuration diagram showing the overall configuration of a radiation measurement system according to Embodiment 1 of the present invention. As shown in FIG. 1, in this embodiment, a radiation measuring device 100 that is driven by a battery 1 and measures a radiation dose, and a radiation management apparatus 101 that manages a measured value of the radiation dose measured by the radiation measuring device 100. It consists of and.

  In the present embodiment, as shown in FIG. 1, a battery 1 for driving the radiation measuring device 100, a detector 2 for measuring radiation, and driving of the detector 2 in the radiation measuring device 100. A high-voltage power supply 3 for power supply, an amplifier 4 for amplifying an output signal from the detector 2, and a count rate meter 5 for processing the amplified signal and converting it into a count rate are provided. Furthermore, an arithmetic function for converting the count rate into an engineering value, a comparison function for confirming whether the value converted into the engineering value is within a predetermined range, a function for controlling the power supply based on the result, and a function for transmitting a measurement value A processor 1 (reference numeral 6) is provided. Furthermore, a code converter 1 (symbol 7) that converts the measurement value processed by the processor 1 into a code such as RS-232C is provided. In addition, a radio wave transmitter 1 (symbol 8) that transmits a code signal output from the code converter 1 as a radio wave by a wireless PHS or a telemeter and the power control signal of the processor 1 are received, and the power supply of the battery 1 is distributed. A power ON / OFF identification controller 9 is provided that controls the radio wave receiver 1 (symbol 10) when it receives a data collection command when the command is received.

  In the radiation management apparatus 101, a radio wave receiver 2 (reference numeral 20) for receiving radio waves transmitted from the radiation measuring instrument 100, a processor 2 (reference numeral 21), and a reception signal received by the radio wave receiver 2 are received by the processor 2 ( A code converter 22 for loading into the code 21) is provided. The processor 2 calculates radiation measurement values, graphs daily reports, monthly reports, quarterly reports, annual reports, and data, monitors data processing functions and measurement values that improve monitoring and manageability, and controls the power supply of the radiation measuring instrument 100 Make a control signal to do. In the example of FIG. 1, the code converter 22 and the processor 2 (reference numeral 21) have an integrated configuration. However, the configuration is not limited to this case, and may be configured separately. The radiation management apparatus 101 further includes a power source 23 for driving the radio wave transmitter 2 (symbol 24), the code converter 22, the processor 2 (symbol 21) and the radio wave receiver 2 (symbol 20), and the processor 2. Is provided with a radio wave transmitter 2 (reference numeral 24) that transmits a signal output from the radiometer 100 to the radiation measuring instrument 100.

  The configuration of FIG. 1 includes a code converter 1 (symbol 7) and a radio wave transmitter 1 (symbol 7) that continuously monitor the radiation level by the processor 1 (symbol 6) of the radiation measuring instrument 100 and transfer measured values to the radiation management apparatus 101. 8) a method for controlling ON / OFF of the power supply and the radiation management apparatus 101 to monitor the measured value, and other than the radio wave receiver 1 (reference numeral 10) and the power ON / OFF identification controller 9 of the radiation measuring instrument 100. It is possible to simultaneously realize two systems in which the power sources of the components 2 to 8 are turned on / off. Note that which method is used may be changed by the user as appropriate, or a predetermined condition is defined in advance, and the method is automatically switched when the condition is satisfied. You may set it. Alternatively, as described below, the main monitoring may be performed by the processor 1 and the sub monitoring may be performed by the processor 2.

  The detector 2, the high voltage power supply 3, the amplifier 4, the counting rate meter 5, the processor 1 (reference numeral 6) and the power ON / OFF identification controller 9 of the radiation measuring instrument 100 are turned on and always detected by the detector 2. Monitoring the measured radiation. The radiation measuring instrument 100 transfers the measurement value to the radiation management apparatus 101 at a predetermined cycle.

  Here, the measured value is within a pre-set range that can be taken (for example, the measured value is within ± 4σ of deviation from the central value of the previous day's measured value, or from the central value of the preset indicated value The processor 1 (symbol 6) determines whether or not the deviation is within ± 4σ, and hereinafter collectively referred to as ± 4σ). Does not transfer the data to the radiation management apparatus 101 for data collection, but manages the time with a clock incorporated in the processor 1 (symbol 6) and transfers the data at an appropriate long period (for example, every hour). The code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) are turned on only during the time required for the measurement value transfer (for example, within 30 seconds) in this appropriate long cycle. Transfer the value. The processor 1 (symbol 6) creates this power ON / OFF command and gives it to the power ON / OFF identification controller 9, whereby the power of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is supplied. ON / OFF. As described above, in the present embodiment, the power source of the code converter 1 (symbol 7) having a function necessary for data transfer and the radio wave transmitter 1 (symbol 8) that consumes a relatively large amount of power during a period when data transfer is not performed. Since the battery is turned off, battery consumption can be suppressed. That is, in such a state, the power source of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is turned on only for about 30 seconds per hour. In comparison, battery consumption can be reduced to 1/120 (1/120).

  On the other hand, when the measured value of radiation fluctuates beyond the normal range (for example, ± 4σ or more), the radiation intensity of the measurement object clearly changes, so the transfer cycle should be shortened. The processor 1 (symbol 6) transmits a signal for turning on the power of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) to the power ON / OFF identification controller 9 and performs measurement. A command to transfer the value to the radiation management apparatus 101 is frequently transmitted from the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8), and the change is finely tracked and recorded by the radiation management apparatus 101. .

  The measurement value is also monitored by the processor 2 (reference numeral 21) on the radiation management apparatus 101 side. If the measurement value is within a possible range (for example, within ± 4σ), the processor 2 (reference numeral 21) It is confirmed that the control of the processor 1 (reference numeral 6) on the 100 side is a long cycle. In the event that the control of the processor 1 is in a short cycle (that is, when the measured value transfer frequency is fast), that is, if it is determined that the processor 1 is not operating normally due to some trouble, the radio wave transmitter 2 From (reference numeral 24) to the power ON / OFF identification controller 9 via the radio wave receiver 1 (reference numeral 10), the detector 2, the high voltage power source 3, the amplifier 4, the counting rate meter 5, and the processor 1 ( Reference numeral 6), a command to turn off the power of the code converter 1 (reference numeral 7) and the radio wave transmitter 1 (reference numeral 8) is transmitted. Next, the processor 2 (reference numeral 21) uses its own internal clock to detect the detector 2, the high-voltage power source 3, the amplifier 4, the counting rate meter 5, the processor 1 (reference numeral 6), at an appropriate cycle (for example, every hour). A command to turn on the power of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is supplied from the radio wave transmitter 2 (symbol 24) via the radio wave receiver 1 (symbol 10). In addition to transmitting to the ON / OFF identification controller 9, a command for transferring the measured value of radiation is transmitted. In this case, the power source of the detector 2, the high-voltage power source 3, the amplifier 4, the counting rate meter 5, the processor 1 (symbol 6), the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is turned on for one hour. By turning on for about 30 seconds, it can be suppressed to 1/120 (1/120). In this case, the power of the radio wave receiver 1 (reference numeral 10) and the power ON / OFF identification controller 9 of the radiation measuring device is always turned on, and a command from the processor 2 via the radio wave transmitter 2 (reference numeral 24) can be received. Keep it as

  In this state, if the measured value fluctuates beyond the normal value (for example, ± 4σ or more), the radiation intensity of the measurement object has clearly changed, so the measurement cycle should be shortened. Then, a command is issued from the processor 2 (reference numeral 21), and the power ON / OFF identification controller 9 of the radiation measuring instrument 100 turns on all the power, transfers the measured values to the radiation management apparatus 101 at a high frequency, and changes the changes. Track closely. In addition, information such as the movement of the radiation source around the radiation measuring instrument 100, information on changes in measured values of other devices, information on work contents that affect the measured values around the radiation measuring instrument 100, and the like are known in advance. When the fluctuation of the measurement value can be predicted, such as when the measurement is performed, the user can arbitrarily set the measurement cycle separately for the processor 2 (reference numeral 21) of the radiation management apparatus 101 so as to shorten the measurement cycle. If this is done, it will be more efficient and more convenient.

  When the radiation around the radiation measuring instrument 100 fluctuates rapidly, or when most of the fluctuations cannot be predicted, always measure the radiation and check the indicated value frequently, and the radiation level does not change Although continuous monitoring is performed, the frequency of transmission of measured values is reduced to suppress battery consumption. In this case, if it can be confirmed that the indicated value has not greatly changed (within ± 4σ), the measured value can be determined to have no change in the radiation level. It is not necessary to operate frequently and transmit the measurement value to the radiation management apparatus 101, and appropriate monitoring can be performed by transmitting a radio wave once per hour and transmitting the measurement value.

  That is, the radio wave transmitter 1 (symbol 8) that consumes a large amount of power only needs to be operated once per hour for the time required for transmission of measurement values (about 30 seconds). By turning it on, battery consumption can be suppressed. When the indicated value changes greatly, it is considered that the radiation level around the radiation measuring instrument 100 has changed greatly. Therefore, the power source of the radio wave transmitter 1 (reference numeral 8) is turned ON or continuously turned on in a short cycle. Is turned ON, the measurement value is transmitted to the radiation management apparatus 101, and the data of the surrounding radiation level is collected finely to realize high fidelity data management.

  When the fluctuation of the radiation around the radiation measuring instrument 100 does not change abruptly and the fluctuation can be predicted in advance from information such as work contents, the operation cycle of the radiation measuring instrument 100 is long (once every hour). Etc.). In such a case, a system for effectively suppressing battery consumption is as follows.

  The radio wave receiver 1 (symbol 10) and the power ON / OFF identification controller 9 of the radiation measuring instrument 100 are always turned on to be in an operating state, and the radiation management apparatus 101 performs radiation measurement, for example, once an hour. A command to be transmitted is transmitted through the radio wave transmitter 2 (reference numeral 24). Upon receipt of the command, the radiation measuring instrument 100 receives the detector 2, the high voltage power supply 3, the amplifier 4, the counting rate meter 5, the processor 1 (reference numeral 6), the code converter 1 (reference numeral 7), and the radio wave transmitter 1 (reference numeral 8). Turn on the power of. Next, when a command for measuring radiation is transmitted, the radiation measuring instrument 100 starts measurement, and the measurement result is transferred to the radiation management apparatus 101 via the radio wave transmitter 1 (reference numeral 8).

  This is an effective method for confirming that there is no change in the measured value. Moreover, since there are usually few devices that always operate among the devices of the radiation measuring instrument 100, it is particularly effective in suppressing battery consumption.

  On the other hand, when the measurement value monitored by the radiation management apparatus 101 changes greatly (± 4σ or more), the radio wave receiver 1 (symbol 10) and the power ON / OFF identification controller 9 that are always operating are used as detectors. 2 Turn on the power of other devices. Next, a measurement start command is transmitted after a lapse of a short time after the power supply is established, and the measurement result is transmitted to the radiation management apparatus 101 via the radio wave transmitter 1 (reference numeral 8). Next, if the state in which the measured value has greatly changed continues, a measurement start command is frequently transmitted (for example, every minute), and the instruction variation is traced in detail. In addition, when there is information that may cause a measurement value to change greatly due to a change in the installation environment such as an operation of handling the radiation source near the installation location of the radiation measuring instrument 100, the radiation management apparatus 101 side Therefore, an appropriate measurement cycle can be set in advance.

  As described above, in the present embodiment, in the configuration of FIG. 1, the code converter 1 (symbol 1) that continuously monitors the radiation level by the processor 1 (symbol 6) of the radiation measuring instrument 100 and transfers the measurement value. 7) and a method for controlling on / off of the power source of the radio wave transmitter 1 (symbol 8), and the measured value is monitored by the radiation management device 101, and the radio wave receiver 1 (symbol 10) and the power source of the radiation measuring device 100 are turned on. It is possible to simultaneously realize two systems of a method for turning on / off the power supply of components other than the / OFF identification controller 9. In this configuration, if the measured value is within the normal fluctuation range or within a predetermined instruction value, the cycle of the power ON command of the radiation measuring instrument 100 is lengthened, and a change exceeding the normal fluctuation range or the predetermined instruction value is confirmed. In this case, since the power ON cycle of the radiation measuring instrument 100 is shortened, power consumption can be suppressed. As a result, unnecessary consumption of the battery can be eliminated, and the replacement of the battery during the operation of the system becomes unnecessary or the replacement frequency is reduced. In the case of a secondary battery, it is a radiation measurement system that requires almost no charging during system operation or has achieved a reduction in the number of times of charging. At the same time, the installation of the power line of the radiation measuring instrument can be omitted, the construction cost can be eliminated, and an inexpensive system can be provided.

  In the above description, an example in which the normal possible range has a deviation from the measurement center value or the indicated center value of about ± 4σ has been described. However, the present invention is not limited to this, and may be ± 3σ or ± 5σ, or may be a set value that takes into account equipment drift, temperature characteristics, and the like. Further, the predetermined instruction value is not limited as long as there is a specific criterion such as diverting the management reference value if it exists. As for the indicated central value, an appropriate value may be selected depending on the measurement object such as the average value of the previous day, one week, one month, and one year.

  The measurement cycle (frequency) when a normal fluctuation value or a measured value equal to or greater than a predetermined indicated value is observed is a short cycle. Generally, continuous, every 10 seconds, every minute, etc. are set. If the individuality of the time change of the measured value is known in advance, the measurement cycle may be determined according to the individuality. In general, the long measurement cycle for the case of normal fluctuation value or within the specified indication value is generally about 10 minutes and 1 hour, but the individuality of the measurement object is known, and even longer cycles are necessary for measurement. If there is no obstacle, it is not particularly limited.

  Further, in the above description, the radiation measuring device is used as the application device, but the temperature, humidity, atmospheric pressure, rainfall amount of solar radiation, wind direction, wind speed, NOX, SOX, CL2 gas, pressure, flow rate, flow velocity other than the radiation measuring device are used. All battery-powered measuring instruments that measure physical quantities such as measuring instruments are targeted.

Embodiment 2. FIG.
FIG. 2 is a diagram showing a configuration of a radiation measurement system according to Embodiment 2 of the present invention. In FIG. 2, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted here. In this embodiment, the processor 1 (symbol 6) of the radiation measuring instrument 100 continuously monitors the radiation level and transfers the measured values. The code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol) 8) shows a method for controlling ON / OFF of the power source. The hatched portion in the figure indicates that the power supply is always on. The present embodiment is different from the configuration of FIG. 1 in that none corresponding to the radio wave receiver 1 (reference numeral 10) and the radio wave transmitter 2 (reference numeral 24) shown in FIG. 1 is provided.

  In the present embodiment, as shown in FIG. 2, the detector 2, the high voltage power supply 3, the amplifier 4, the counting rate meter 5, the processor 1 (symbol 6), the power ON / OFF identification controller 9, the battery 1, the cord In the radiation measuring instrument 100 composed of the converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8), the measured value is always monitored by the processor 1 (symbol 6), and the measured value is within a normal fluctuation range or a predetermined range. If it is within the indicated value, the measured value is not transferred to the radiation management apparatus 101, the time is managed by the internal clock of the processor 1 (symbol 6), and the measured value is transmitted to the radiation management apparatus 101 every preset long period. To do. In this case, the powers of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) are turned off except during transmission to suppress battery consumption. At the time of transmission, a signal having a preset measurement cycle (long cycle) is transmitted from the processor 1 (symbol 6) to the power ON / OFF identification controller 9, and the code converter 1 (symbol 7) and the radio wave transmitter 1 are transmitted. The power of (reference numeral 8) is turned on and the measured value is transferred to the radiation management apparatus 101 side.

  On the other hand, when the measured value exceeds a normal fluctuation range or a predetermined instruction value, a signal for setting a measurement cycle (short cycle) preset from the processor 1 (symbol 6) to the power ON / OFF identification controller 9 or A signal for continuously turning on the power is transmitted, the power of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is turned on, and the measured value is transferred to the radiation management apparatus 101 side for detailed monitoring. To do.

  As described above, in the present embodiment, the radiation level is continuously monitored by the processor 1 (symbol 6) of the radiation measuring instrument 100, and a signal is transmitted to the power ON / OFF identification controller 9, whereby a long period is obtained. Alternatively, power ON / OFF of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is controlled in a short cycle. That is, the measured value is constantly monitored by the processor 1 (symbol 6), and if the measured value is within a normal fluctuation range or a predetermined indication value, the measured value is not frequently transferred to the radiation management apparatus 101, and the processor 1 The time is managed by the internal clock (reference numeral 6), and the measured value is transmitted to the radiation management apparatus 101 for each preset long cycle. In this case, the powers of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) are turned off except during transmission to suppress battery consumption. On the other hand, when the measured value exceeds a normal fluctuation range or a predetermined instruction value, a signal for setting a measurement cycle (short cycle) preset from the processor 1 (symbol 6) to the power ON / OFF identification controller 9 or A signal for continuously turning on the power is transmitted, the power of the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is turned on, and the measured value is transferred to the radiation management apparatus 101 side for detailed monitoring. To do. As described above, in the present embodiment, the power of the code converter 1 (symbol 7) having a function necessary for data transfer and the radio wave transmitter 1 (symbol 8) having relatively high power consumption is normally turned off, Since only the necessary minimum can be turned on, power consumption can be suppressed.

Embodiment 3 FIG.
FIG. 3 is a diagram showing a configuration of a radiation measurement system according to Embodiment 3 of the present invention. In FIG. 3, the same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted here. In the present embodiment, the radiation level is monitored by the processor 2 (reference numeral 21) of the radiation management apparatus. The power supply ON / OFF identification controller 9 of the radiation measuring instrument 100 and the power supply of the radio wave receiver 1 (symbol 10) are always ON. Other configurations, that is, the detector 2, the high voltage power supply 3, the amplifier 4, the counting rate meter 5, the processor 1 (reference numeral 6), the code converter 1 (reference numeral 7) and the radio wave transmitter 1 (reference numeral 8) are always OFF. Only when a command for measuring radiation is received from the radiation management apparatus 101, the power is turned on. As described above, in the present embodiment, among the components of the radiation measuring instrument 100, the power on / off of components other than the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is controlled. It shows the method to do. The hatched portion in the figure indicates that the power supply is always on.

  The operation will be described. The measured value is constantly monitored by the processor 2 (reference numeral 21) of the radiation management apparatus 101. When the measured value is within a normal fluctuation range or within a predetermined indicated value, the detector 2, the high-voltage power source 3, and the amplifier of the radiation measuring instrument 100 4, a counting rate meter 5, a processor 1 (symbol 6), a code converter 1 (symbol 7) and a signal for turning off the power of the radio wave transmitter 1 (symbol 8) are sent from the processor 2 (symbol 21) to the radio wave transmitter 2 (Symbol 24) and the power is turned off. Next, the time is managed by the internal clock of the processor 2 (reference numeral 21) of the radiation management apparatus 101, and from the radio wave transmitter 2 (reference numeral 24) with a preset long cycle (for example, once per hour). The power ON signal is transmitted. Since the radio wave receiver 1 (symbol 10) and the power ON / OFF identification controller 9 are always ON and in an operating state, when the power ON signal is received, the power ON / OFF identification controller 9 passes through the power ON / OFF identification controller 9. The power source of the detector 2, the high voltage power source 3, the amplifier 4, the counting rate meter 5, the processor 1 (symbol 6), the code converter 1 (symbol 7) and the radio wave transmitter 1 (symbol 8) is turned on. Next, when a command for measuring radiation is transmitted from the processor 2 (reference numeral 21), the radiation measuring instrument 100 starts measurement, and the measurement result is transferred to the radiation management apparatus 101 via the radio wave transmitter 1 (reference numeral 8). Is done. In this case, since there are few devices that always operate, it is particularly effective in suppressing battery consumption.

  On the other hand, when the measurement value monitored by the radiation management apparatus 101 changes greatly (± 4σ or more), the radiation management apparatus 101 uses the radio receiver 1 (symbol 10) that is always operating and the power ON / OFF identification control. The power source of the detector 2, the high voltage power source 3, the amplifier 4, the counting rate meter 5, the processor 1 (symbol 6), the code converter 1 (symbol 7), and the radio wave transmitter 1 (symbol 8) is connected via the generator 9. A command to turn ON or continuously ON at a preset short cycle is transmitted. Next, the radiation management apparatus 101 transmits a measurement start command after a short time has elapsed after the power supply is established, and the measurement result is transmitted to the radiation management apparatus 101 via the radio wave transmitter 1 (reference numeral 8). . Next, if the state in which the measured value has greatly changed continues, a measurement start command is frequently transmitted (for example, every minute), and the instruction variation is traced in detail. In addition, when there is information that may cause a measurement value to change greatly due to a change in the installation environment such as an operation of handling the radiation source near the installation location of the radiation measuring instrument 100, the radiation management apparatus 101 side Therefore, an appropriate measurement cycle can be set in advance.

  As described above, in the present embodiment, the radiation level is monitored by the processor 2 (reference numeral 21) of the radiation management apparatus 101, and a signal is transmitted to the power ON / OFF identification controller 9, whereby a long period or In a short cycle, the detector 2 of the radiation measuring instrument 100, the high voltage power supply 3, the amplifier 4, the counting rate meter 5, the processor 1 (reference numeral 6), the code converter 1 (reference numeral 7) and the radio wave transmitter 1 (reference numeral 8). Controls power ON / OFF. That is, the measured value is constantly monitored by the processor 2 (reference numeral 21), and if the measured value is within a normal fluctuation range or a predetermined indicated value, the measured value is transmitted from the radiation measuring instrument 100 for each preset long period. And receive. In this case, the detector 2, the high voltage power supply 3, the amplifier 4, the count rate meter 5, the processor 1 (symbol 6), the code converter 1 (symbol 7) and the radio wave transmitter of the radiation measuring instrument 100 except when transmitting the measuring instrument. 1 (symbol 8) is turned off to suppress battery consumption. On the other hand, when the measured value exceeds a normal fluctuation range or a predetermined instruction value, a measurement cycle (short) set in advance from the processor 2 (symbol 21) to the power ON / OFF identification controller 9 of the radiation measuring instrument 100. Period) or a signal to turn on the power continuously, detector 2 of radiation measuring instrument 100, high voltage power supply 3, amplifier 4, counting rate meter 5, processor 1 (symbol 6), code converter 1 (Numeral 7) and the radio wave transmitter 1 (Numeral 8) are turned on and the measured values are transferred to the radiation management apparatus 101 side for detailed monitoring. As described above, in the present embodiment, the radio wave receiver 1 (reference numeral 10) having a function of receiving signals from the power ON / OFF identification controller 9 and the radiation management apparatus 101 having functions necessary for ON / OFF control. It is possible to normally turn on only the other power source and turn off all other components and turn on only the necessary minimum, so that power consumption can be suppressed.

Embodiment 4 FIG.
FIG. 4 is a detailed diagram showing a time series value of measurement values and a time series of data transmission in the system corresponding to the second embodiment (FIG. 2). “A” in the figure is the measurement center value of the previous day, and when there is an indication variation of ± 4σ from this point A, the measurement frequency is changed from “once per hour” to “once per minute”. An example of changing to "" will be described. “B” in the figure indicates a point in time when the measurement value fluctuates beyond the normal range, and “c” in the figure indicates a point in time when the measurement value returns to the normal range. Note that the configuration of the radiation measurement system in the present embodiment is the same as that in FIG. 2 described in the second embodiment, and therefore, the description thereof will be omitted here. “A” will be described as the measurement center value on the previous day, but the present invention is not limited to this.

  Thus, in the present embodiment, the measurement value is continuously monitored by the radiation measuring instrument 100. At this time, as shown in FIG. 4, after the time point “b” when the measured value fluctuates beyond the normal range, the measurement frequency is changed from the normal “once per hour” to “once per minute”. is doing. Further, after the time point “c” when the measured value returns to the normal range, the value is changed from “once per minute” to “once per hour”.

  As described above, in the present embodiment, when the measurement value fluctuates beyond the normal range in the configuration of FIG. 2, the measurement frequency is changed from a normal long cycle (once per hour) to a short cycle (one time per hour). When the measured value is within the normal range, the short cycle (once per minute) is changed to the long cycle (once per hour). Since the measurement frequency can be minimized, power consumption can be suppressed.

Embodiment 5. FIG.
FIG. 5 is a detailed diagram showing a time series value of measured values and a time series of data transmission in a system corresponding to the third embodiment (FIG. 3). “A” in the figure is the measurement center value on the previous day, and when there is an indication variation of ± 4σ from this point A, the communication frequency is changed from “once per hour” to “once per minute”. An example of changing to "" will be described. “B” in the figure indicates a point in time when the measured value fluctuates beyond the normal range. Note that the configuration of the radiation measurement system in the present embodiment is the same as that in FIG. 3 described in the third embodiment, and therefore, the description thereof will be omitted here. “A” will be described as the measurement center value on the previous day, but the present invention is not limited to this.

  Thus, in the present embodiment, the radiation management apparatus 101 continuously monitors the measurement values. At this time, as shown in FIG. 5, after the time point “b” when the measured value fluctuates beyond the normal range, the communication frequency between the radiation measuring device 100 and the radiation management apparatus 101 is set to the normal “1 hour”. It changes from “once” to “once per minute”. Although not shown, when the measured value returns to the normal range, the value is changed from “once per minute” to “once per hour”.

  As described above, in the present embodiment, when the measured value fluctuates beyond the normal range in the configuration of FIG. 3, the communication frequency is changed from a normal long cycle (once every hour) to a short cycle (one time per hour). When the measured value is within the normal range, the short cycle (once per minute) is changed to the long cycle (once per hour). Since the communication frequency can be minimized, power consumption can be suppressed.

Embodiment 6 FIG.
FIG. 6 is a detailed diagram showing a time series value of measurement values and a time series of data transmission in the system corresponding to the third embodiment (FIG. 3). The difference from FIG. 5 is the case where the threshold value of the indicated value exceeds the control reference value (such as a high radiation warning value) in the measurement start command. “H” in the figure is a management reference value, and when there is an instruction variation exceeding the value of H, the communication frequency is changed from “once per hour” to “once per minute”. An example will be described. “D” in the figure indicates a point in time when the measured value fluctuates beyond the management reference value. Note that the configuration of the radiation measurement system in the present embodiment is the same as that in FIG. 3 described in the third embodiment, and therefore, the description thereof will be omitted here.

  Thus, in the present embodiment, the radiation management apparatus 101 continuously monitors the measurement values. At this time, as shown in FIG. 6, after the time point “d” when the measured value fluctuates beyond the control reference value, the communication frequency between the radiation measuring device 100 and the radiation management apparatus 101 is set to the normal “1 per hour”. Times "to" once a minute ". Further, although not shown, when the measured value returns to a value smaller than the management reference value, it is changed from “once per minute” to “once per hour”.

  As described above, in the present embodiment, when the measured value fluctuates beyond the management reference value in the configuration of FIG. 3, the communication frequency is changed from a normal long cycle (once every hour) to a short cycle (1 If the measured value is smaller than the control reference value, change from short cycle (once per minute) to long cycle (once per hour). Since the communication frequency can be minimized, the power consumption can be suppressed.

It is the block diagram which showed the structure of the radioactivity measurement system which concerns on Embodiment 1 of this invention. It is the block diagram which showed the structure of the radioactivity measurement system which concerns on Embodiment 2 of this invention. It is the block diagram which showed the structure of the radioactivity measurement system which concerns on Embodiment 3 of this invention. It is explanatory drawing which showed operation | movement of the radioactivity measurement system which concerns on Embodiment 2 of this invention. It is explanatory drawing which showed operation | movement of the radioactivity measurement system which concerns on Embodiment 3 of this invention. It is explanatory drawing which showed operation | movement of the radioactivity measurement system which concerns on Embodiment 3 of this invention.

Explanation of symbols

  1 battery, 2 detector, 3 high voltage power supply, 4 amplifier, 5 counting rate meter, 6 processor 1, 7 code converter 1, 8 radio wave transmitter 1, 9 power ON / OFF identification controller, 10 radio wave receiver 1, 20 Radio wave receiver 2, 21 Processor 2, 22 Code converter, 23 Power source AC100V / DC, 24 Radio wave transmitter 2, 100 Radiation measuring instrument, 101 Radiation management device.

Claims (3)

A radiation measurement system comprising a battery-powered radiation measurement device for measuring radiation dose and a radiation management device for managing measured values of the measured radiation dose,
When the measured value of the radiation dose measured by the radiation measuring instrument is within a predetermined range, the cycle of the power ON command of the radiation measuring instrument is lengthened, and when the measured value exceeds the predetermined range A radiation measuring system comprising a control means for shortening the cycle of the power ON command of the radiation measuring instrument.   The radiation measuring device includes a detector for measuring a radiation dose, and a radio wave transmitter for transmitting a measured value of the detected radiation dose to the radiation management device, and the control means is provided on the radiation measuring device side. 2. The radiation measurement according to claim 1, wherein the control means controls a cycle of a power ON command of the radio wave transmitter, and the detector is always in a power ON state. system.   The control means is provided on the radiation management apparatus side, and the radiation measuring device includes a detector for measuring a radiation dose, and a radio wave for transmitting a measured value of the detected radiation dose to the radiation management device. A transmitter and a radio receiver for receiving a signal from the control means provided in the radiation management device, the control means controlling a cycle of a power ON command of the detector and the radio transmitter. The radiation measurement system according to claim 1, wherein the radio wave receiver is always in a power-on state.

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