JPH11258346A - Data-collecting system and radiation measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency for collecting data in a radiation measurement system for collecting dose data from a plurality of personal dose meters. SOLUTION: A plurality of base stations 10A and 10B are installed in a radiation handling facility, and each worker (carrying person) carries personal dose meters 100a-118a. The personal dose meters have a function for exchanging data. When two personal dose meters approach, data are exchanged automatically, thus transmitting data being measured by a certain personal dose meter to a base station via one or a plurality of other personal dose meters.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a data collection system and a radiation measurement system, and more particularly to collection of data acquired by a plurality of mobile stations (including personal dosimeters).

[0002]

2. Description of the Related Art A personal dosimeter is used to control the exposure of each worker engaged in a radiation handling facility or the like.
The dose data measured by the personal dosimeter is displayed on a display provided in the personal dosimeter. On the other hand, various proposals have been made for managing dose data from a personal dosimeter by a host device. For example, there has been proposed a system in which a data collection device is provided at an entrance of a facility and individual dose data is read from a personal dosimeter of an operator who has passed near the data collection device.

[0003]

However, there is a possibility that some persons will work for a long time without passing near the data collection device. In such a case, there is a problem that the exposure of each worker cannot be quickly managed. That is, for example, when the data collection device is arranged only at the entrance, it is not possible to manage the dose of the worker until the worker enters the facility in the morning and leaves the evening. This problem can be alleviated by increasing the number of installed data collection devices. However, the number of installed data collection devices is still limited to some extent, and the same problem occurs if the data collection device is not passed in the vicinity.

In a general data collection system, data collection is performed by individually transmitting data from the distributed devices to the data collection device. In particular, a small power type having a small communication area is used. In the above system, there is a problem that data collection is restricted by the positional relationship between each device and the data collection device.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a data collection system and a radiation measurement system capable of improving the efficiency of data collection even when the number of data collection devices installed is limited. Is to provide.

[0006]

In order to achieve the above object, the present invention is a system comprising a plurality of mobile stations and at least one base station, wherein the mobile station has a central station. Transmitting means for transmitting the collected data owned by itself to another mobile station or the base station existing in the communication area, and the other mobile station existing in the communication area. Receiving means for receiving the collected data owned by the station, and data management means for updating the collected data owned by itself based on the collected data from the other mobile station, the base station includes And collecting means for receiving collected data from any of the mobile stations entering an update area centered on the base station, and exchanging the collected data between the mobile stations.

[0007] According to the above configuration, collected data managed by each mobile station (for example, a portable personal dosimeter) is mutually exchanged. Therefore, when a certain mobile station has some data, that data is copied while walking across each mobile station, and finally passed from any mobile station to the base station. Therefore, even if the number of base stations installed is small, data collection efficiency can be improved by data exchange between mobile stations.

[0008] In the above system, there is a possibility that a mobile station that is isolated for a long time without communication with another mobile station or base station may occur. In such a case, for example, a non-collected data is collected using a handy type data logger or the like, or a broadcast for urging data collection is broadcasted by determining such a non-collected state in the host device. it can.

In a preferred aspect of the present invention, the mobile station has data measurement means, and the data management means manages measurement data of the mobile station and measurement data of another mobile station as the collected data. Here, the data measurement means is, for example, a means for measuring radiation. The data management means manages data measured by another mobile station in addition to data measured by its own mobile station.

[0010] In a preferred aspect of the present invention, identification information for identifying a mobile station that has measured the collected data and time information related to measurement of the collected data are added to the collected data.

[0011] In a preferred aspect of the present invention, the data management means updates the collected data based on the identification information and the time information. For example, when there are a plurality of data for the same mobile station, the most recent data is used as the representative data.

[0012] In a preferred aspect of the present invention, there is provided an uncollected data determining means for determining measurement data that has not been collected based on the collected data received by the base station. According to this configuration, it is possible to determine a mobile station that is in an uncollected state and take measures against it. Therefore, preferably, in a preferable aspect of the present invention, a notifying unit for prompting the collection of the uncollected measurement data is provided. Alternatively, preferably, a mobile collection device for collecting the uncollected measurement data is used.

In a preferred aspect of the present invention, the mobile station is carried by at least each worker in the facility, and the base station is installed at least in the vicinity of an entrance in the facility.
Other places, for example, where there are relatively many people,
For example, it is desirable to install a base station in a washroom.

[0014] In a preferred aspect of the present invention, the mobile station is mounted on a mobile, and the base station is installed near a route through which the mobile passes. Here, the moving body is, for example, a vehicle, and a base station, which is a data logger, is installed near a traffic route of the vehicle.

In a preferred aspect of the present invention, the transmitting means of the mobile station makes a call for communication, the receiving means of the mobile station makes a response to a call from another mobile station, and the communication is made by the call and the response. After establishment, the exchange of collected data takes place.

In a preferred aspect of the present invention, the mobile station comprises:
There is means for establishing communication with only one of the plurality of responses.

In order to achieve the above object, the present invention is a system comprising a plurality of personal dosimeters and at least one dose data collection device, wherein the personal dosimeter comprises:
A radiation detector that performs detection of radiation, and a transmission unit that transmits collected data owned by the user to another personal dosimeter or the dose data collection device existing in the communication area centered on the self, Receiving means for receiving collected data owned by the other individual dosimeter from other individual dosimeters existing in the communication area, and dose data and other individual doses measured by the radiation detector owned by the own individual dosimeter Data management means for integrating the dose data measured by the meter and managing the collected data as collected data, and updating the collected data owned by the mobile station based on the collected data from the other mobile station. The dose data collection device includes collection means for receiving collected data from any personal dosimeter that has entered a communication area centered on the dose data collection device; Characterized in that mutually exchange data collected between.

In a preferred aspect of the present invention, the dose data includes identification information for identifying a personal dosimeter that measured the dose data, and measurement time information related to a time when the dose data was measured. Will be added.

In a preferred aspect of the present invention, when the collected data is received from the another personal dosimeter, the data management means updates the latest dose data for each personal dosimeter based on the measurement time information. And only the latest dose data is used as collected data.

In order to achieve the above object, the present invention provides a radiation measuring system including a plurality of portable personal dosimeters, wherein the portable personal dosimeter detects radiation and outputs dose data. And data exchange means for exchanging dose data with other portable personal dosimeters by radio waves or infrared rays.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the concept of a radiation measurement system according to the present invention. This radiation measurement system
For example, the system is installed in a radiation handling facility or the like, and includes one or a plurality of base stations (data loggers) 10A,
OB and personal dosimeters 100a-1 carried by each worker
18a and the management center 12 shown in FIG. The management center 12 is, for example, a communication line 1
4 and a plurality of base stations 10A, 10B, and 10C.

The management center 12 has a personal dosimeter 100
a functions as a host device that manages the exposure dose of each person measured in a to 118a.
2 is connected to a collected data storage device 12A for managing the dose data.

In the system configuration example shown in FIG. 1, the base station 10A is installed at the entrance of a radiation handling facility. Another base station 10B is installed, for example, near the entrance of the washroom. These base stations 10A, 10A
B is, for example, a wall-mounted data logger, which is fixedly installed. Data and messages are exchanged between the personal dosimeters 100a to 118a and the base stations 10A and 10B by communication means such as radio waves or infrared rays.

Each of the personal dosimeters 100a to 118a is carried by one of the carriers 100 to 118 as workers, and functions as a device for measuring individual exposure dose. This personal dosimeter 100a-11
8a has a pen-like form, for example, and
It is used by attaching it to 18 breast pockets.

The facility shown in FIG. 1 has, for example, a plurality of laboratories, and each worker conducts experiments and works in each laboratory. In this case, some laboratories are working only by one person, and some laboratories are conducting experiments by a plurality of workers. Of course, there is a flow of workers between the laboratories and in the passages.

In the system according to the present embodiment,
Each of the personal dosimeters 100a to 118a has a function of exchanging dose data with other personal dosimeters. That is, in addition to the data measured by itself, data measured by another personal dosimeter is also managed. As a result, when the two personal dosimeters approach each other within a certain range, data exchange is automatically performed, and the respective data are shared with each other.

Updating by the personal dosimeter is performed by weak radio waves, which limits the communication range to the vicinity.
For example, updates can be established with other personal dosimeters in the same laboratory. Here, for example, laboratory 5
There is no partner for data exchange with respect to the worker 118 who is working at the station. For example, when the person goes to wash his / her hands, the base station 10B disposed in the vicinity and the personal dose carried by the person Communication with the meter 118a is established, whereby the dose data measured by the personal dosimeter 118a is taken in by the base station 10B.

For example, when only the worker 100 is present in the laboratory 1, the dose data cannot be exchanged in that state, but the worker 112 appears from the laboratory 4 or the like in the laboratory 1. At that time, those dosimeters 112a and 10a
The dose data can be exchanged between 0a. Therefore, each personal dosimeter will take in new dose data every time communication is established with other personal dosimeters, and will collect collected data managed up to that point as needed. Updated or new records added to the collected data. Then, for example, when any worker passes near the base station 10A or 10B, collected data managed therefrom collectively is collected from the personal dosimeter owned by that worker.
Will be passed to.

Here, although rarely, the dose data acquired by any one of the personal dosimeters is stored in the base station 10A.
Or it may not be collected at 10B. In that case, it is automatically determined and the worker is encouraged to collect data by broadcasting in the hall or the like, or the manager 120 carrying the handy logger 120a as shown in FIG. Logging of uncollected dose data is also possible.

According to the above system, for example, even if the communication capability of each personal dosimeter is low, it is possible to efficiently collect the dose data acquired by each personal dosimeter through the distribution of humans. It becomes possible.

FIG. 3 shows the personal dosimeter 100 shown in FIG.
Configuration examples of a to 118a are shown as block diagrams.

The control unit 20 controls the entire personal dosimeter. The control unit 20 has a CPU 38,
The control is actually performed by the PU 38. Control unit 2
0, a transmission / reception unit 22 is connected.
The transmission or reception of radio waves is performed via the transmission line 2. An antenna 24 is connected to the transmitting / receiving unit 22.

The sensor 26 is, for example, a semiconductor detector for measuring radiation. A detection pulse output from the sensor 26 is amplified by an amplifier 28, and then amplified by a pulse height discriminator 30.
Is input to A detection pulse having a certain peak value or more is selected in the peak discriminator 30, and the number of the detection pulses is counted by the counter 32. Counter 32
Are sent to the collection table 34 and managed there. A specific configuration example of the collection table 34 will be described later with reference to FIG.
, Data measured by other personal dosimeters in addition to its own measurement data are collectively managed. This, of course, depends on the number of contacts made with other personal dosimeters. The contents of the collection table 34 are transmitted as radio waves to the other personal dosimeters via the communication unit 36 and the transmission / reception unit 22, and the collected data from the other personal dosimeters is received by the antenna 24 by radio waves. And communication unit 3
6 is stored in the collection table 34.
The process of updating the collection table 34 will be described later.

The control unit 20 is connected to a liquid crystal display 40,
The liquid crystal display 40 displays, for example, dose data. Further, an operation panel 42 is connected to the control unit 20, and various inputs are performed by the operation panel 42. For example, an alarm sound is generated at the speaker 44 when an abnormality occurs.
The control unit 20 is connected to a power supply circuit 48, and the power supply circuit 48 converts a voltage supplied from the battery 46 to a required voltage and supplies it to each circuit.

FIG. 4 shows the collection table 34 shown in FIG.
Is shown. This collection table 3
In 4, the dose data (integrated dose) and the measurement date and time (data transmission date and time) are managed in association with each dosimeter ID. Here, the time is stored to determine which dose data is new when dose data acquired by the same dosimeter later is acquired. Here, the dose data measured by each dosimeter including the own dose data constitutes collected data 200 as a whole, and the collected data 200 is transmitted to another dosimeter. When the collected data is received from another dosimeter, a record is added to the collection table or the dose data and the measurement time are updated as described later.

FIG. 5 shows another example of the transmission / reception method in the personal dosimeter. In this example, transmission and reception are performed by infrared rays. That is, the optical transmission / reception driver 50 is connected to the control unit 20, and the optical transmission / reception driver 50
Is connected to a light emitter 52 and a light receiver 54. Data is transmitted by infrared rays to another personal dosimeter using the light emitter 52, while data from another dosimeter is received via the light receiver 54.

Next, the operation of the personal dosimeter shown in FIG. 3 will be described with reference to FIG.

The operation example shown in FIG. 6 is an example.

In S101, the timer managed by the control unit 20 is reset. In S102, it is determined whether an inquiry from another personal dosimeter or a base station has been received. Here, when it is determined that such an inquiry has not been received, it is determined in S103 whether or not the time measured by the timer has reached a predetermined time. Here, if the fixed time has not elapsed, the process of S102 is repeatedly executed.

If it is determined in S103 that the predetermined time has elapsed, in S104, an inquiry call is made from the personal dosimeter to another personal dosimeter or a base station. If there is a response to the call, it is determined in S105, while if there is no response, it is determined in S106 whether the inquiry call has been executed n times. Here, when it is determined that the inquiry call has been executed the required number of times, the steps from S101 are repeatedly executed. On the other hand, if the inquiry call has not been executed the required number of times, the steps from S104 are not executed. It is executed repeatedly. Incidentally, if it is determined that there is no response in S105, the steps after S101 can be executed immediately.

If it is determined in step S105 that a reply has been received, in step S107, a communication partner is specified. In this case, if there is only one reply, the personal dosimeter or base station that made the reply is specified as the communication destination. On the other hand, if there are multiple reply destinations, any one of them is returned. The destination is specified as the communication destination. In specifying such communication, for example, priority is given to communication with the base station, or a priority is set for each personal dosimeter, and priority is given to a higher priority according to the priority. Control may be performed to perform communication.

Further, the timing of the response from the reception of the inquiry may be set at random, and the first response destination may be specified as the communication destination. When it is detected that the inquiry destination is already communicating with another communication destination, the response may not be transmitted.

In S108, the collected data managed by the personal dosimeter is sequentially transmitted to the communication destination. For example, the transmission is performed for each record constituting the collected data 200 shown in FIG.

In step S109, it is determined whether the communication destination is another personal dosimeter or a data logger (including a handy logger). If it is determined that the communication destination is a data logger, each process from step S101 is performed. Is repeatedly executed, and on the other hand, when it is determined that the personal dosimeter is another personal dosimeter, collected data transmitted from the other personal dosimeter as the communication destination is received (S110). In S111, an update process is performed on the collection table managed by itself. This will be described later.

On the other hand, if there is an inquiry from another personal dosimeter prior to the self inquiry call in S102, it is determined in S102, and S120 is performed.
Then, a reply message is transmitted to the communication destination that made the inquiry. In S121, it is determined whether or not communication has been established with the communication destination. If communication has not been established due to, for example, a response conflict, S10 is executed.
The third and subsequent steps are performed. On the other hand, if it is determined that communication has been established, it is determined in S122 whether the communication destination is another personal dosimeter or a data logger. Here, if it is determined in S122 that the data logger is a data logger, the collected data owned by itself is transmitted to the data logger in S123.

On the other hand, if it is determined in step S122 that the communication destination is another dosimeter, the collection data from the communication destination is first received in step S124, and thereafter, the collection data owned by the self is stored in step S125. It will be transmitted to the communication destination. Then, in S126, S1
An update process for updating the contents of the collection table managed by itself based on the collected data received at 24 is executed.

FIG. 7 shows a specific operation example of the table updating process (S111, S126) shown in FIG.

In S201, data of one record is obtained from the received collected data. Here, the data of one record is the dosimeter I as shown in FIG.
D, dose data, and measurement time.

In S202, it is determined whether or not a personal dosimeter having the same ID exists in the collection table 34 managed by itself. If it is determined that there is no personal dosimeter, the control unit proceeds to S203. It is determined whether or not the storage area for the collection table 34 in the memory of the storage 20 has a free space. In this case, if there is no space, S20
At 4, the oldest record is deleted. And S
In 205, the data for one record acquired in S201 is added to the collection table 34.

On the other hand, when it is determined in S202 that the same ID exists, in S206, the corresponding measurement time in the collection table 34 is compared with the measurement time included in one record acquired in S201. , It is determined whether or not the received record is new. Here, the measurement time is the date and time when the data was sampled.

If it is determined in S206 that the received data is new, in S207 the dose data and measurement time corresponding to the personal dosimeter in the collection table are updated to new data. That is, the data is overwritten. Of course, if it is determined in S206 that the data is old data, the data is not updated.

At S208, it is determined whether or not the next record exists in the received collected data. If the next record exists, each step from S201 is repeatedly executed. finish.

Next, the operation of the base station will be described with reference to FIG.

In S301, the timer managed by the base station is reset, and in S302, it is determined whether or not an inquiry has been received by the base station. Here, if it is determined that such an inquiry has not been received, it is determined in S303 whether a predetermined time has elapsed after resetting the timer. If it is determined that the predetermined time has elapsed, in S304, it is determined. A request call is transmitted from the base station to the personal dosimeter present in the area range, indicating that the collected data is to be transmitted to itself. S3 if there is a response to the request call
In step S306, it is determined whether or not the request call 304 has been made a predetermined number of times. If there is a response during the predetermined number of request calls, S3
At 06, the communication destination is specified. That is, when there are a plurality of replies, one of the personal dosimeters is specified as the communication destination from among the replies. When there is only one reply, the personal dosimeter that has substantially made such a reply is specified as the communication destination. In S307, the collected data transmitted from the personal dosimeter specified as the communication destination is received, and in S308, the collected data received as described above is transmitted to the management center 12 shown in FIG. .

On the other hand, if it is determined in S302 that the inquiry from the personal dosimeter has been received, the process proceeds to S309.
In step S310, it is determined whether or not communication has been established with the personal dosimeter. Here, when it is determined that such communication has been established, the steps after S307 are executed. On the other hand, if it is determined in S310 that the communication has not been established, the steps after S303 are executed.

Therefore, by performing the above operation in each personal dosimeter and each base station, as a result, the administration center 12 collects the dose data acquired by all or almost all the personal dosimeters. And the management center 12 manages the data collected in this way on the collected data storage device 12A. Here, the management center 12
Has a function to identify the personal dosimeter for which dose data has not been collected for a certain period of time, and if there is such uncollected data, the management center 12 automatically starts broadcasting in the building, An operator is instructed to go to the nearest base station to the worker related to the uncollected data. In the case where such uncollected data is determined in the management center 12, the administrator sets the handy logger 120A shown in FIG.
Collect uncollected data by carrying a device.

Next, FIG. 9 shows an example of a system configuration according to another embodiment. In this system, a radiation measurement device 60A is mounted on a vehicle 60, and measurement data is exchanged between the radiation measurement devices 60A. The data exchange is performed in the same manner as in the system shown in FIG. When one of the vehicles 60 runs near the base station 62, the radiation measuring device 60
Communication is automatically established between A and the base station 62, and its own measurement data and other measurement data managed by the radiation measurement device 60A are transmitted to the base station 62 collectively.
The base station 62 is connected to a management center 66 via a telephone line 64, and the management center 66 collectively manages measurement data collected by each base station.
Here, the base station 62 is, for example, a monitoring post arranged near the traveling route of the vehicle 60. Incidentally, when the number of the installed base stations 62 is small, for example, the mobile station 68 for data logging is attached to the data logger vehicle 68.
A may be mounted, and measurement data transmitted from the radiation measurement device 60A mounted on each vehicle 60 by the mobile station 68A may be collected. The transmission of the collected data from the mobile station 68A may be directly transmitted to the management center 66 by using radio waves or a telephone line, but the data is transmitted by bringing the data logger vehicle 68 close to the base station 62. Transmission may be performed.

The data collection system described above can be applied to a data collection system other than the radiation measurement system.

[0060]

As described above, according to the present invention,
Even if the number of installed data collection devices is limited, the efficiency of data collection can be improved.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an embodiment of a radiation measurement system according to the present invention.

FIG. 2 is a diagram showing a relationship between a base station and a management center.

FIG. 3 is a block diagram illustrating a configuration example of a portable personal dosimeter.

FIG. 4 is a diagram showing a specific configuration example of a collection table.

FIG. 5 is a diagram illustrating a configuration example in the case of performing transmission and reception by infrared rays.

FIG. 6 is a flowchart showing the operation of the personal dosimeter.

FIG. 7 is a flowchart showing specific processing contents of the table updating processing shown in FIG. 6;

FIG. 8 is a flowchart showing an operation in the base station.

FIG. 9 is a conceptual diagram showing another embodiment.

[Explanation of symbols]

10A, 10B base station (data logger), 12 management center, 20 control unit, 22 transmission / reception unit, 24 antenna, 26 sensor, 32 counter, 34 collection table, 36 communication unit, 100-118 carrier (worker), 100a ~ 118a Personal dosimeter.

Claims (15)

[Claims] 1. A system comprising a plurality of mobile stations and at least one base station, wherein the mobile station is another mobile station existing within a communication area centered on itself or the base station. To, transmitting means for transmitting collected data owned by itself, receiving means for receiving, from another mobile station existing in the communication area, collected data owned by the other mobile station, Data management means for updating collected data owned by the mobile station based on collected data from another mobile station, and wherein the base station has entered an update area centered on the base station. A data collection system, comprising: collection means for receiving collected data from mobile stations, wherein the mobile stations exchange collected data. 2. The system according to claim 1, wherein the mobile station has data measurement means, and the data management means manages measurement data of the mobile station and measurement data of another mobile station as the collected data. A data collection system characterized by: 3. The system according to claim 2, wherein the collected data is added with identification information for identifying a mobile station that measured the collected data and time information related to the measurement of the collected data. And a data collection system. 4. The data collection system according to claim 3, wherein the data management unit updates the collected data based on the identification information and the time information. 5. The data collection system according to claim 2, further comprising an uncollected data determination unit that determines uncollected measurement data based on the collected data received by the base station. . 6. The data collection system according to claim 5, further comprising a notification unit for prompting the collection of the measurement data that has not been collected. 7. The data collection system according to claim 5, further comprising a mobile collection device for collecting the uncollected measurement data. 8. The data collection system according to claim 1, wherein the mobile station is carried by each worker in the facility, and the base station is installed at least near a doorway in the facility. . 9. The data collection system according to claim 1, wherein the mobile station is mounted on a mobile, and the base station is installed near a route of the mobile. 10. The system according to claim 1, wherein the transmitting means of the mobile station makes a call for communication, and the receiving means of the mobile station makes a response to a call from another mobile station. A data collection system in which collected data is exchanged after communication has been established. 11. The data collection system according to claim 10, wherein said mobile station has means for establishing communication with only one of the plurality of responses from a plurality of responses. 12. A system comprising a plurality of personal dosimeters and at least one dose data collection device, wherein the personal dosimeter mainly includes a radiation detector for detecting radiation and a self-dosimeter. A transmitting means for transmitting collected data owned by itself to another personal dosimeter present in the communication area or the dose data collection device; and other personal dosimeters present in the communication area. Reception means for receiving collected data owned by the individual dosimeters, and managing the collected data by integrating the dose data measured by the own radiation detector and the dose data measured by other personal dosimeters Means for updating the collected data owned by the mobile station based on the collected data from the other mobile station, and the dose data collection device, Radiation measurement, comprising collecting means for receiving collected data from any of the personal dosimeters that have entered the communication area centered on the quantity data collecting device, and exchanging the collected data between the personal dosimeters. system. 13. The system according to claim 12, wherein the dose data includes identification information for identifying a personal dosimeter that measured the dose data, and measurement time information related to a time when the dose data was measured. And a radiation measurement system. 14. The system according to claim 13, wherein said data management means, when receiving collected data from said another personal dosimeter, updates the latest personal dosimeter for each personal dosimeter based on said measurement time information. A radiation measurement system characterized in that dose data is determined and only the latest dose data is used as collected data. 15. A radiation measurement system including a plurality of portable personal dosimeters, wherein the portable personal dosimeter detects radiation and outputs dose data, and another portable personal dosimeter. And a data exchange means for exchanging dose data between radio waves or infrared rays.