JPH0557548B2 - - Google Patents
Info
- Publication number
- JPH0557548B2 JPH0557548B2 JP58150173A JP15017383A JPH0557548B2 JP H0557548 B2 JPH0557548 B2 JP H0557548B2 JP 58150173 A JP58150173 A JP 58150173A JP 15017383 A JP15017383 A JP 15017383A JP H0557548 B2 JPH0557548 B2 JP H0557548B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- power supply
- radiation
- dosimeter
- preamplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005855 radiation Effects 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/15—Instruments in which pulses generated by a radiation detector are integrated, e.g. by a diode pump circuit
Description
【発明の詳細な説明】
この発明は、放射線強度または放射線量（一般
的には積算された放射線量を表わすもので、単位
はＲ（レントゲン）またはｍＲ（ミリレントゲン）
である。）を測定し、規定量以上の放射線を被ば
くした場合は警報を発するようにした携帯用放射
線線量計（以下、単に線量計ともいう。）に関す
る。DETAILED DESCRIPTION OF THE INVENTION This invention relates to radiation intensity or radiation dose (generally representing integrated radiation dose, the unit of which is R (roentgen) or mR (milliroentgen).
It is. ) and is designed to issue an alarm if you are exposed to more than a specified amount of radiation (hereinafter also simply referred to as a dosimeter).
一般に、この種の線量計においては、その電源
として一次または二次電池が使用されているが、
該電池が消耗すると計測動作が不能となるばかり
でなく、それ迄に蓄積されたデータが消失して重
大な事故につながるため、長時間の使用に耐え得
る電池を使用するとともに、電池の消耗状態を迅
速に検知できることが望ましいにも拘らず、この
ような場合の対策が何ら施されていないのが現状
である。 Generally, this type of dosimeter uses a primary or secondary battery as its power source.
If the battery runs out, not only will measurement become impossible, but data stored up to that point will be lost, leading to a serious accident. Therefore, use a battery that can withstand long-term use, and monitor the battery's depletion status. Although it is desirable to be able to quickly detect such cases, at present no countermeasures have been taken for such cases.
この発明はかかる点に鑑みてなされたもので、
電池電圧が所定値以下に低下したときは、記憶デ
ータの消失を防ぐためにメモリへの給電は最小限
維持しつゝ電池の消耗を極力抑止することによ
り、線量計の機能および信頼性の向上を図ること
を目的とする。 This invention was made in view of these points,
When the battery voltage drops below a predetermined value, the power supply to the memory is maintained to a minimum to prevent the loss of stored data, and by minimizing battery consumption, the functionality and reliability of the dosimeter can be improved. The purpose is to
その特徴は、高圧電源により駆動される放射線
検出器と前記検出器の検出出力を増幅して出力す
るプリアンプとを少なくとも含む放射線量の計測
手段と、前記計測手段において計測された放射線
量の計測値を該計測手段から与えられて記憶する
記憶手段と、から成る放射線線量計において、
前記放射線線量計に給電する電池の消耗状態を
検出する電池消耗状態検出手段と、
前記電池消耗状態検出手段により一定限度を越
えて前記電池が消耗したことが検出されると、前
記計測手段における高圧電源とプリアンプに対す
る給電は停止するが、前記記憶手段に対する給電
は維持してその記憶内容を保護しつつ、前記電池
の消耗状態の回復を待つ記憶手段の記憶内容保護
手段と、を備えたことにより、記憶データの消失
を防止し、その保護を図ることにある。 Its features include a radiation dose measuring means that includes at least a radiation detector driven by a high-voltage power supply and a preamplifier that amplifies and outputs the detection output of the detector, and a radiation dose measurement value measured by the measuring means. A radiation dosimeter comprising: a storage means for storing the information received from the measuring means; a battery consumption state detection means for detecting a consumption state of a battery that supplies power to the radiation dosimeter; When it is detected that the battery has been depleted beyond the limit, power supply to the high-voltage power supply and preamplifier in the measurement means is stopped, but power supply to the storage means is maintained to protect the stored contents, and the battery is The purpose of the present invention is to prevent the loss of stored data and protect it by providing a storage content protection means for the storage means that waits for the storage device to recover from its exhausted state.
以下、この発明の実施例を図面を参照して説明
する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図はこの発明の実施例を示すブロツク図、
第２図は線量計の動作と電池電圧との関係を説明
する説明図、第３図はこの発明による動作を説明
するためのフローチヤートである。 FIG. 1 is a block diagram showing an embodiment of this invention.
FIG. 2 is an explanatory diagram for explaining the relationship between the operation of the dosimeter and the battery voltage, and FIG. 3 is a flowchart for explaining the operation according to the present invention.
第１図において、１はＩ／Ｏ（入出力装置）１
１、cpu（演算制御装置）１２、ROM（リードオ
ンリメモリ）１３およびRAM（ランダムアクセ
スメモリ）１４から構成されるマイクロコンピユ
ータ（以下、単にマイコンともいう。）、２は電池
消耗検出回路、３は警報器、５はプリアンプ、４
はプリアンプ用スイツチ、３は放射線検出器、６
は検出器用高圧電源、７は高圧電源用スイツチで
ある。なお、プリアンプ５および検出器用高圧電
源６で消費される電力は比較的大きく、その他の
回路では割合少ないものとする。 In Figure 1, 1 is an I/O (input/output device) 1
1. A microcomputer (hereinafter also simply referred to as a microcomputer) consisting of a CPU (arithmetic control unit) 12, a ROM (read only memory) 13, and a RAM (random access memory) 14; 2 a battery consumption detection circuit; 3 a battery consumption detection circuit; Alarm, 5 is preamplifier, 4
is the preamplifier switch, 3 is the radiation detector, 6
7 is a high-voltage power supply for the detector, and 7 is a switch for the high-voltage power supply. Note that the power consumed by the preamplifier 5 and the high-voltage power supply 6 for the detector is relatively large, and the power consumed by the other circuits is relatively small.
以下、第１，３図を参照してその動作を説明す
る。 The operation will be explained below with reference to FIGS. 1 and 3.
図示されない電源スイツチをONにすることに
より（第３図○イ参照）、第１図に示される各回路
へ電源が供給され、放射線量の計測動作が行なわ
れる（第３図○ロ参照）。ここで、電池電圧が所定
値以下になると、電池消耗検出回路２はこれを検
出して（第３図○ハ参照）出力Ｓを発生し、マイコ
ン１をスタンバイモード（マイコンとしての機能
は果さないが、記憶データは保持する状態）にし
て消費電力の低下を抑止する。このとき、電池電
圧が所定値以下になつてすぐに各機能を停止させ
ると、計測値が不明となるため、マイコン１をス
タンバイ状態にするとともに（第３図○ホ参照）、
信号S′を発してプリアンプ５および検出器用高圧
電源６を駆動するスイツチ４および７を動作させ
てその電源を断とする。なお、マイコン１をスタ
ンバイ状態にする（第３図○ホ）前に、マイコン１
から信号を出して警報器３を動作させ（第３図
○ニ）電池の充電を促すべく警報を発すると、より
便利である。以後、電池からのパワーはメモリ１
３，１４によつてのみ消費されることになるの
で、その消費電力をきわめて少なくすることがで
きる。つまり、消費電力の比較的大きな部分（プ
リアンプ５、検出器用高圧電源６）に対する給電
を停止して、電力の消耗を最小限に抑えるもので
ある。なお、その後、所定の時点で充電が行なわ
れることは云う迄もなく、該充電が行なわれたな
らば（第３図○ヘ参照）、線量計の計測動作が再開
されることも勿論である。（第３図○ト参照）。ま
た、この場合、線量計は第２図の如く電池電圧が
電源低下時の電圧値VLに上昇してもすぐには動
作せず、VSに達したときに動作するように、検
出回路２の動作にヒステリシス特性を持たせるよ
うにする。こうすることによつて、電源回復後に
は線量計へは充分に充電された電池電圧が印加さ
れることになるため、それ迄に保持されていた計
測積算値が再現できるばかりでなく、直ちに計測
動作が開始される。 By turning on a power switch (not shown) (see Figure 3, ○A), power is supplied to each circuit shown in Figure 1, and radiation dose measurement operations are performed (see Figure 3, ○B). Here, when the battery voltage falls below a predetermined value, the battery depletion detection circuit 2 detects this (see ○C in Figure 3), generates an output S, and puts the microcomputer 1 into standby mode (the microcomputer function is not fulfilled). However, the stored data is retained) to suppress a decrease in power consumption. At this time, if each function is stopped immediately after the battery voltage falls below a predetermined value, the measured value will become unknown, so the microcomputer 1 is placed in standby mode (see Figure 3, ○),
A signal S' is generated to operate switches 4 and 7 that drive the preamplifier 5 and high voltage power supply 6 for the detector, and turn off the power. Note that before putting microcomputer 1 into standby mode (○ho in Figure 3),
It would be more convenient to issue a signal to activate the alarm 3 (see Figure 3, ◯D) and issue an alarm to urge the battery to be charged. From then on, the power from the battery will be transferred to memory 1.
3 and 14, the power consumption can be extremely reduced. In other words, the power supply to parts that consume relatively large amounts of power (preamplifier 5, high-voltage power supply for detector 6) is stopped to minimize power consumption. It goes without saying that the dosimeter is then charged at a predetermined time, and once the charge is done (see ○ in Figure 3), the measurement operation of the dosimeter is of course restarted. . (See ○ in Figure 3). In this case, as shown in Figure 2, the dosimeter does not operate immediately even if the battery voltage rises to the voltage value V L at the time of power supply drop, but the detection circuit is designed so that it operates only when it reaches V S. The second operation should have hysteresis characteristics. By doing this, a sufficiently charged battery voltage will be applied to the dosimeter after the power is restored, so not only can the accumulated measurement value that has been held until then be reproduced, but also the measurement can be started immediately. The operation begins.
以上のように、この発明によれば、高圧電源に
より駆動される放射線検出器と前記検出器の検出
出力を増幅して出力するプリアンプとを少なくと
も含む放射線量の計測手段と、前記計測手段にお
いて計測された放射線量の計測値を該計測手段か
ら与えられて記憶する記憶手段と、から成る放射
線線量計において、
前記放射線線量計に給電する電池の消耗状態を
検出する電池消耗状態検出手段と、
前記電池消耗状態検出手段により一定限度を越
えて前記電池が消耗したことが検出されると、前
記計測手段における高圧電源とプリアンプに対す
る給電は停止するが、前記記憶手段に対する給電
は維持してその記憶内容を保護しつつ、前記電池
の消耗状態の回復を待つ記憶手段の記憶内容保護
手段と、を備えたことにより、計測線量値データ
の消失を防止することができるため、その機能お
よび信頼性が著しく向上するものである。このた
め、電池を充電させた後は前回の積算値に加算し
て計測を継続することが可能である。 As described above, according to the present invention, there is provided a radiation dose measuring means that includes at least a radiation detector driven by a high-voltage power supply and a preamplifier that amplifies and outputs the detection output of the detector; a storage means for storing measured values of radiation dose received from the measuring means; a battery depletion state detection means for detecting a depletion state of a battery that supplies power to the radiation dosimeter; When the battery consumption state detection means detects that the battery has been consumed beyond a certain limit, power supply to the high-voltage power source and preamplifier in the measurement means is stopped, but power supply to the storage means is maintained and the stored contents are stored. By providing a means for protecting the stored contents of the storage means while waiting for the battery to recover from its depleted state, it is possible to prevent the measured dose value data from being lost, thereby significantly improving its functionality and reliability. It will improve. Therefore, after charging the battery, it is possible to continue measurement by adding it to the previous integrated value.
第１図はこの発明の実施例を示すブロツク図、
第２図は線量計の動作と電池電圧との関係を説明
する説明図、第３図は線量計の動作を説明するた
めのフローチヤートである。
符号説明、１……線量計用マイコン、２……電
池消耗検出回路、３……警報器、４……プリアン
プ用電源スイツチ、５……プリアンプ、６……検
出器用高圧電源、７……高圧電源用スイツチ、８
……検出器、１１……Ｉ／Ｏ（入出力装置）、１２
……cpu（演算制御装置）、１３……ROM（リード
オンリメモリ）、１４……RAM（ランダムアクセ
スメモリ）。
FIG. 1 is a block diagram showing an embodiment of this invention.
FIG. 2 is an explanatory diagram for explaining the relationship between the operation of the dosimeter and the battery voltage, and FIG. 3 is a flowchart for explaining the operation of the dosimeter. Description of symbols, 1...Microcomputer for dosimeter, 2...Battery consumption detection circuit, 3...Alarm, 4...Power switch for preamplifier, 5...Preamplifier, 6...High voltage power supply for detector, 7...High voltage Power switch, 8
...Detector, 11 ...I/O (input/output device), 12
... CPU (arithmetic control unit), 13 ... ROM (read only memory), 14 ... RAM (random access memory).
Claims (1)
記検出器の検出出力を増幅して出力するプリアン
プとを少なくとも含む放射線量の計測手段と、前
記計測手段において計測された放射線量の計測値
を該計測手段から与えられて記憶する記憶手段
と、から成る放射線線量計において、 前記放射線線量計に給電する電池の消耗状態を
検出する電池消耗状態検出手段と、 前記電池消耗状態検出手段により一定限度を越
えて前記電池が消耗したことが検出されると、前
記計測手段における高圧電源とプリアンプに対す
る給電は停止するが、前記記憶手段に対する給電
は維持してその記憶内容を保護しつつ、前記電池
の消耗状態の回復を待つ記憶手段の記憶内容保護
手段と、 を備えたことを特徴とする放射線線量計。[Scope of Claims] 1 Radiation dose measuring means including at least a radiation detector driven by a high-voltage power supply and a preamplifier that amplifies and outputs the detection output of the detector, and the radiation dose measured by the measuring means storage means for storing measured values given from the measuring means; battery consumption state detection means for detecting the consumption state of a battery that supplies power to the radiation dosimeter; and battery consumption state detection means for detecting the consumption state of a battery that supplies power to the radiation dosimeter. When the means detects that the battery has been consumed beyond a certain limit, power supply to the high-voltage power supply and preamplifier in the measurement means is stopped, but power supply to the storage means is maintained to protect the stored contents. A radiation dosimeter comprising: a memory content protection means for a storage means that waits for the battery to recover from a depleted state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15017383A JPS6042676A (en) | 1983-08-19 | 1983-08-19 | Radiation dosimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15017383A JPS6042676A (en) | 1983-08-19 | 1983-08-19 | Radiation dosimeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6042676A JPS6042676A (en) | 1985-03-06 |
| JPH0557548B2 true JPH0557548B2 (en) | 1993-08-24 |
Family
ID=15491093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15017383A Granted JPS6042676A (en) | 1983-08-19 | 1983-08-19 | Radiation dosimeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6042676A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2834619B2 (en) * | 1992-07-24 | 1998-12-09 | 矢崎総業株式会社 | Gas leak alarm device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5530757A (en) * | 1978-08-24 | 1980-03-04 | Casio Comput Co Ltd | Small size electronic calculator |
| JPS56127220A (en) * | 1980-03-10 | 1981-10-05 | Canon Inc | Battery-driven electronic machinary |
-
1983
- 1983-08-19 JP JP15017383A patent/JPS6042676A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5530757A (en) * | 1978-08-24 | 1980-03-04 | Casio Comput Co Ltd | Small size electronic calculator |
| JPS56127220A (en) * | 1980-03-10 | 1981-10-05 | Canon Inc | Battery-driven electronic machinary |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6042676A (en) | 1985-03-06 |
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