JPS6161080A - Radiation monitor device - Google Patents

Abstract

PURPOSE:To obtain an economical, small-sized monitor device which has high reliability, maintainability, and operativity by multiplexing and processing detection signals from plural radiation detectors. CONSTITUTION:The plural radiation detectors 1 are connected to a signal processor 3, and detection signals are converted into digital signal, multiplexed, and supplied to a monitor unit 5, which transmits data on a set voltage, etc., to the detectors 1 through the processor 3. The arithmetic microcomputer 15 of the unit 5 receives and stores successively plural radiation detection signals which are supplied from the detectors 1 through the processor 3, and processes the detection signals variously to obtain specific arithmetic results of the calculation of a radiation level, etc. Further, a microcomputer 17 for display control receives various data supplied from the arithmetic microcomputer 15 and processes them, and a display unit is controlled to display an image plane.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to radiation monitor equipment for detecting and monitoring radiation at various locations, such as in nuclear power plants.

[Technical Field of the Invention] In nuclear power plants, etc., it is necessary to efficiently monitor the radiation level in the surrounding area at all times. A radiation monitoring device as shown is used. In the conventional device shown in FIG. 6, signals detected by a plurality of radiation detectors 1 are separately supplied to monitor modules 51 constituting a monitoring unit 53 in pairs, and each monitor module 51 The radiation levels of each are being measured. The radiation levels thus measured are recorded in the recorder 13 and supplied to the auxiliary relay unit 9, which checks each radiation level and detects various alarms, which are sent to the annunciator. 11 for notification.

By the way, in the conventional radiation monitor installation configured in this way, since the plurality of radiation detectors 1 are connected to the monitor module 51 in a pairwise relationship, the number of wires to the monitoring unit 53 increases. In addition, a plurality of monitor modules 51 in the same number as the radiation detectors 1 are required, which is uneconomical and requires a considerably large space. Furthermore, there are problems with maintenance and operation, such as not being able to easily check the M single-stage fixed value for comparison with the detected radiation level in order to detect abnormalities and generate alarms, and not being able to check the status of each radiation detector. The problem is that it lacks sex.

[Object of the invention] This invention has been made in view of the above, and aims to be economical, compact, highly reliable,
An object of the present invention is to provide a radiation monitoring device that is easy to maintain and operate.

[Summary of the Invention] In order to achieve the above object, the present invention includes a plurality of radiation detection means for detecting radiation, a signal processing means for multiplexing detection signals from the plurality of radiation detection means, and a signal processing means for multiplexing detection signals from the plurality of radiation detection means. arithmetic control means for receiving detection signals from the plurality of radiation detection means supplied through the means, storing the detection signals, and performing predetermined performance processing on the detection signals; and the arithmetic control means. a display control means connected to the arithmetic control means for receiving various signals and processing them for display; input means for inputting control signals and data to the display control means; and displaying the signals from the display control means. The gist is to have a display means for displaying.

[Embodiments of the invention] The present invention will be described in detail below using the drawings.

FIG. 1 shows an embodiment of the present invention.

The radiation monitor device shown in the figure includes a plurality of radiation detectors 1
is connected to the signal processing device 3, and the signal processing device N3 converts the detection signals from the plurality of radiation detection devices N1 into digital signals, multiplexes the signals, and supplies the digital signals to the monitor unit 5.
The monitor unit 5 is configured to be able to transmit data such as set voltage to the radiation detector 1 via the f8 processing device 3.

The monitor unit 5 includes, in addition to an auxiliary relay unit 9, a calculation microcomputer 15, a display control microcomputer 17, a display unit 19, a plurality of function keys 21, a cursor movement key 23, and a data setting as shown in FIG. key 25 and a data setting switch 27. Further, an annunciator 11 and a recorder 13 are connected to the monitor unit 5. The calculation microcomputer 15 sequentially receives and stores a plurality of radiation detection signals from the radiation detector 1 that are sequentially supplied via the signal processing device 3, and performs various calculation processes on the detection signals to determine the radiation level. It performs various calculation controls such as calculating a predetermined calculation result such as calculation of , determining an alarm level by comparing it with a predetermined base level, and outputting an alarm signal. The display control microcombicoater 17 receives various data supplied from the calculation microcomputer 15, that is, the radiation detection signal from the radiation detector 1, calculation result data, alarm signals, etc. Input signals from the movement keys 23, data setting keys 251, and data setting switches 27 are received, and under the control of these input signals, various data from the calculation microcomputer 15 and data from these various keys are displayed on the display unit. 19, and also changes the setting values.

The display unit 19 displays a selected screen under the control of the display control microcomputer 17, and displays the detected radiation level, various setting levels, and the presence or absence of an alarm in detail for each radiation detector 1fjI or for all radiation detectors 1 at the same time. etc. will be displayed. The function keys 21 are keys for achieving display screen selection functions and various display processing functions, and the function contents of each key are displayed at the lower end of the display unit 19 for easy operation. . The cursor movement key 23 is a key for moving the cursor displayed on the display unit 19 up, down, left and right, and is used to change or specify a setting value displayed at the screen position of the cursor on the display unit 19. data to be input next from each key is displayed at the screen position where the cursor is located on the display unit 19.

The data setting keys 25 consist of a numeric keypad or the like, and are used to input various data for setting.

The data setting switch 27 is used to enable the input of various data for setting using the data setting key 25. The data setting switch 27 is used to enable input of various data for setting using the data setting key 25. Data is input and settings are changed.

FIG. 3 shows in detail the connection relationship between the calculation microcomputer 15 and the display control microcombicoater 17 and the functional configuration within each microcombicoater.

As shown in the figure, the operation of transmission and reception between the calculation micro combi coater 15 and the radiation detector 1 is achieved by a calculation control section 37 that performs processing such as various calculations, alarm determination, and alarm output.

Various data calculated by the calculation control unit 37 and radiation detection data received from the radiation detector 1 are stored in a data storage area of the memory 39. The performance control section 37 also outputs a signal to the recorder 13 and an alarm to the annunciator 11. The calculation microcomputer 15 and the display control microcombicoater 17 are connected via a data bus 31.

The display control microcomputer 17 processes input signals from the function keys 21, cursor movement keys 23, data setting keys 25, and data setting switches 27 in a key manual discrimination section 41, and selects a display screen according to the contents. , changes in display contents, changes in setting values, etc. are controlled by the display/setting data set section 43, which is converted into display commands by the display command set section 45, and this command is supplied to the display unit 19 to display the desired information. I am trying to display the following. The calculation microcombicoater 15 and the display control microcomputer 17 are thus connected via the data bus 31, but the calculation microcomputer 15 performs processing such as calculating radiation levels and outputting alarm signals. The display control microcomputer 17 executes processing such as data display and settings, and is completely separated functionally, so even if the display control microcomputer 17 malfunctions, the display control microcomputer If only computer 15 is complete,
The original function of monitoring radiation and generating an alarm in the event of an abnormality has been achieved, making it a highly reliable radiation monitoring device.

Further, the calculation microcomputer 15 and the display control microcomputer 17 each have a data bus 33.
．． It is connected to the diagnostic micro combi coater 29 via 35. The diagnostic microcomputer 29 checks each microcomputer 15.17 and diagnoses whether the microcomputer 15.17 is normal or not. When the display control microcomputer 17 breaks down, the display control microcombicoater 17 is electrically separated from the arithmetic microcombicoater 15 so as not to affect the arithmetic microcomputer 15. It is designed to output the failure status. In addition, the calculation microcomputer 15
, a data bus 31 connecting between the display control microcomputer 17 and the diagnostic microcomputer 29
゜33.35 are each configured with a serial data transmission line, and each microcombicoater can be completely electrically separated by optical transmission using an optical fiber, so each microcomputer can operate independently. Therefore, even if the display control microcombicoater 17, its display section, or key input section becomes defective, the monitoring and calculation functions of the calculation microcomputer 15 will not be affected.

Next, the operation of the radiation monitoring device configured as described above will be explained.

First, the radiation level measurement operation will be explained. Signals detected by the plurality of radiation detectors 1 are sequentially converted into digital signals by the signal processing device 3, multiplexed, and supplied to the calculation micro combi coater 15 of the monitor unit 5. The calculation micro combi coater 15 sequentially sends the received detection signal to the memory 3 via the calculation control unit 37.
At the same time, the calculation control unit 37 calculates the radiation level from the detection signal, stores this radiation level in the memory 39, and further compares the radiation level with a predetermined reference level to determine whether the radiation level is higher than the reference level. Determine whether something exists. When a level higher than the reference level is detected, an alarm signal is generated, and this alarm signal is stored in the memory 39, and this alarm signal is output from the annunciator 11 to notify the operator. Further, the detected data from the free line detector 1 and the calculated free f) ItlA level stored in the memory 39 are outputted to the recorder and recorded.

The detection signals, calculated radiation levels, alarm signals, etc. processed in the calculation microcomputer 15 and stored in the memory 39 in this way are displayed in the display/setting data set section 43 under the control of the display control microcomputer 17. is activated and read out from the memory 39,
It is supplied to a display control microcomputer 17 and displayed on a display unit 19.

In this case, the display screen and display data, such as how to display this data on the display unit 19, are selected by operating the function keys 21, cursor movement keys 23, data setting keys 25, data setting switch 27, etc. It is carried out by key personnel.

Next, such a display operation will be explained with reference to the flowchart of FIG. 4 and the display example of FIG. 5(a)-0).

Under normal conditions and after initializing the device, the display unit 19 automatically displays an all-channel monitoring screen that can monitor all radiation detectors 1, that is, all channels, as shown in No. 5FJ(a). is selected and displayed. In this all-channel monitoring screen, the channel number corresponding to each radiation detector 1 is displayed on the left edge of the screen, and the corresponding monitor level, that is, the measured radiation level, is displayed on the right side of this number, and an alarm is generated. When an alarm occurs, an alarm is displayed on the right side corresponding to the channel where the alarm occurred. Further, functions corresponding to the function keys 21 are displayed on the screen above the function keys 21. In Figure 5 0), the rightmost function key 21 and the second function key 2 from the left
1, "Reset" and "Kaku CH Clear" are displayed, respectively. Therefore, when these function keys 21 are pressed, an alarm reset operation or a screen display for monitoring each channel is performed. In this way, the function keys 21 can be used for multiple purposes by displaying the functions of each key on the display unit 19, and also prevent erroneous operation.

The operation of switching to the screen display for monitoring each channel by pressing the second function key 21 from the left when the screen for monitoring all channels is displayed in this way will be explained using the flowchart in FIG. do.

Now, when the second key from the left of the function keys 21 is pressed and an input is made (step 110), the display control microcomputer 17 stores this key manual power information (step 120) and sends it to the key manual power determination unit 41. supply,
The key information is discriminated by the key human power discriminator 41 and it is determined whether the request is for screen display or setting value change (steps 130, 14).
0>. In this case, the function key 21 is input to switch to the screen display for monitoring each channel, so the process proceeds to step 150 and a selection operation is performed on the display screen. Then, the input key information is analyzed and a corresponding display command is set based on the analysis result. In this case, a command to switch to each channel monitoring screen is set as the display command, and this T1 cloak is supplied to one display unit (step 180.1).
90).

As a result, the display unit 19 displays the image shown in FIG. 5(b).
A screen for monitoring each channel as shown in is displayed.

In this display of FIG. 5(b), the radiation detector 1 of channel 1 is selected, and the radiation level detected by the 11IA detector 1, the measurement location of the radiation detector 1, and the type of radiation detector , the reference setting level for alarm discrimination, etc. are displayed. In addition, in the screen above the function key 21, "ZENCH KANSHI", "SETTICH", [7-
The corresponding function key will be displayed.
21 functions are displayed.

Furthermore, even if an alarm occurs from a channel other than the one being displayed, this can be immediately notified. For example, it can be configured to automatically switch to the all-channel monitoring screen when an alarm occurs, or it can be configured to display an alarm marker or comment on the screen that is being displayed. . Note that the key for "r mode" at the right end of the function keys 21 on the screen shown in FIG. 5(b) is used to specify the operation mode.

When you operate the function key 21 for "Uzen C1-1" on the leftmost screen in FIG. 5 (ω), all channels in FIG. 5(a) are switched to the monitoring screen, and the third " When you operate the function key 21 for "Setting", you can switch to the setting value display/change screen as shown in Figure 5(C).This setting value display/change screen display is as follows.
This is done for each channel, and in this case channel 13 is selected and displayed. Further, on this screen, various setting values such as the lower limit of the radiation level, the radiation level high, the radiation level high/high, the voltage of the high-voltage power supply, and the discrimination level are displayed. Each setting value can be changed by operating the data setting key 25, but for this purpose, the data setting switch 2
It is necessary to turn on 7.

Therefore, when the data setting switch 27 is turned on and the data setting key 25 is operated, this key manual power is set to 4.
In the process of step 140 in the flowchart shown in the figure, it is determined that the setting value changing process is to be performed, and the process proceeds to step 160, where it is checked whether the setting value inputted with the data setting key 25 can be changed. As a result, if the set value can be changed, the process proceeds to steps 170 and 180, where the set value is converted into a display command and supplied to the display unit 19, and the set value shown in FIG. 5(C) is changed. displayed (step 19o).

Furthermore, as shown in Figure 5), the auxiliary relay unit 9 can be removed by adding an alarm sequence display and setting screen to the display unit 19 and providing an alarm output logic circuit to the monitor unit 5. .

Further, in the above embodiment, the data setting switch 27
However, information such as a password may be set, and whether or not the set value can be changed may be determined by manually inputting the password.

[Effects of the Invention] As described above, according to the present invention, detection signals from a plurality of radiation detection means are multiplexed by a signal processing means and supplied to an arithmetic control means formed by, for example, a micro combi coater, This arithmetic and control means performs arithmetic processing, and the result of the arithmetic is displayed on a display by a display control means, which is constituted by a microcomputer separate from the arithmetic and control means, and is displayed via the display control means. Since the setting values and the like can be displayed and changed from the input means, it is economical and compact, has higher reliability, and has significantly improved maintainability and operation v1. Furthermore, since the arithmetic control means and the display control means are constructed independently, even if the display control means fails, the four display control means are connected to each other so as not to affect the processing of detected data. The reliability of the device has been improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a radiation monitoring device showing an embodiment of the present invention, Fig. 2 is a perspective view showing the configuration of a monitor unit used in the radiation monitoring device of Fig. 1, and Fig. 3 is a block diagram of the microphone n combination coater that constitutes the monitor unit in FIG. 2, FIG. 4 is a flowchart showing the display operation of the radiation monitor device in FIG. 1, and FIGS. 5(a) to 5<d
) is a diagram showing a display example of a display unit used for the radiation monitor shown in FIG. 1, and FIG. 6 is a diagram showing the configuration of a conventional radiation monitor device. 1...Radiation detector 3...Signal processing equipment 5...
Monitor unit 15...Microphone n combination coater 17...Display 1111m micro combination coater 19...Display unit Oj: 1 u -ノ ~ノ
-I Lt Lt Go Glass
Min So-ku - Ikkyo

Claims (2)

[Claims] (1) A plurality of radiation detection means for detecting radiation, a signal processing means for multiplexing detection signals from the plurality of radiation detection means, and a plurality of radiation detection means supplied via the signal processing means. an arithmetic control means that receives a detection signal from the computer, stores the detection signal, and performs predetermined arithmetic processing on the detection signal; , a radiation monitor device comprising a display control means for processing to display, an input means for inputting a control signal and data to the display control means, and a display means for displaying the signal from the display control means. . (2) A radiation monitoring device according to claim 1, wherein the calculation control means and the display control means are each constituted by an independent microcomputer.