JPH0428071Y2

JPH0428071Y2 -

Info

Publication number: JPH0428071Y2
Application number: JP5385883U
Authority: JP
Priority date: 1983-04-11
Filing date: 1983-04-11
Publication date: 1992-07-07
Also published as: JPS59161087U

Description

【考案の詳細な説明】本考案は放射線被曝計、より詳細に言うならば
表示部の切替回路に関する。[Detailed Description of the Invention] The present invention relates to a radiation exposure meter, and more specifically, to a switching circuit for a display section.

従来、放射線被曝計は、第１図に示したよう
に、接片が電源に接続する第１のスイツチ１の一
方の接点に接続する電源ラインを介して放射線
検出回路２、メータ駆動回路３、計数回路４、
LED駆動回路５に電源６から作動電力を供給し、
他方の接点に常開の釦スイツチＳ１を介してメー
タ早送り回路７とメータ駆動回路３に接続すると
ともに、この第１のスイツチ１と連動する第２の
スイツチ８のON側の接点に常開の釦スイツチＳ
２を介してLED表示器９をON−OFFする表示
ON−OFF回路１０を制御するように構成されて
いる。 Conventionally, as shown in FIG. 1, a radiation exposure meter has a radiation detection circuit 2, a meter drive circuit 3, Counting circuit 4,
Supplying operating power to the LED drive circuit 5 from the power supply 6,
The other contact is connected to the meter fast forward circuit 7 and the meter drive circuit 3 via a normally open button switch S1, and the ON side contact of a second switch 8 that is linked to this first switch 1 is normally open. Button switch S
Display to turn ON/OFF the LED display 9 via 2
It is configured to control the ON-OFF circuit 10.

この装置において、第１、第２の切り換えスイ
ツチ１，８をOFF側に切り換えた状態で、釦ス
イツチＳ１を押すと、メータ早送り回路７、メー
タ駆動回路３に駆動電力が供給されてメータＭが
早送りされる。メータＭの指針が零表示を行なつ
た時点で、釦スイツチＳ１から手を離すと、メー
タがリセツトされた状態となる。この状態におい
て、切り換えスイツチ１，８をON側に切り換え
ると、各回路に駆動電力が供給され、放射線検出
回路２からのパルスがメータ駆動回路３に入力し
て被曝量がメータＭによつてアナログ表示され、
同時に放射線検出回路２からのパルスは計数回路
４に入力してカウントされ、釦スイツチＳ２を押
すことにより表示ON−OFF回路１０が作動して
計数回路４の計数内容、つまり被曝量がLED表
示器９によりデイジタル表示される。なお、図中
符号１１は検出回路２とメータ早送り回路７から
の信号が入力するオアゲートを、１２は、装置の
動作時にメータ駆動回路７が作動するのを防止す
る誤動作防止用ダイオードを、T₁，T₂は表示
ON−OFF回路１０を構成するトランジスタをそ
れぞれ示している。 In this device, when button switch S1 is pressed with first and second changeover switches 1 and 8 turned OFF, driving power is supplied to meter fast forward circuit 7 and meter drive circuit 3, and meter M is turned on. fast forwarded. When the pointer of the meter M indicates zero, if the user releases the button switch S1, the meter will be in a reset state. In this state, when the changeover switches 1 and 8 are turned ON, drive power is supplied to each circuit, pulses from the radiation detection circuit 2 are input to the meter drive circuit 3, and the exposure dose is measured by the meter M in an analog manner. displayed,
At the same time, pulses from the radiation detection circuit 2 are input to the counting circuit 4 and counted, and by pressing the button switch S2, the display ON-OFF circuit 10 is activated, and the content of the counting circuit 4, that is, the exposure amount, is displayed on the LED display. Digitally displayed by 9. In the figure, reference numeral 11 denotes an OR gate into which signals from the detection circuit 2 and meter fast-forward circuit 7 are input, and ₁₂ denotes a malfunction prevention diode that prevents the meter drive circuit 7 from operating during operation of the device. , T ₂ is displayed
The transistors constituting the ON-OFF circuit 10 are shown respectively.

この装置によれば、被曝量は、常にアナログ表
示できるばかりでなく、必要によりデイジタル表
示が行なえるため、使用勝手が良いという特徴が
あるが、アナログ表示器の早送りと、デジタル表
示器のON−OFFをそれぞれ別の釦スイツチによ
り行なうため、実装場所に制限を受けるという不
都合があつた。 According to this device, the exposure dose can be displayed not only in analog mode at all times, but also in digital mode when necessary, making it easy to use. Since each switch is turned off using a separate button switch, there are restrictions on where it can be installed.

本考案は、このような事情に鑑み、連動する２
つの切り換えスイツチの一方を電源のON−OFF
に使用し、他方の切り換えスイツチは釦スイツチ
を介して電源に接続し、各接点をそれぞれメータ
早送りとデジタル表示のON−OFF回路に接続し
て１つの釦スイツチを２種の機能に使い分け、も
つて切り換え回路の簡素化を図つた放射線被曝計
を提供することを目的とする。 In view of these circumstances, this invention has two systems that work together.
Turn one of the two selector switches on and off.
The other switch is connected to the power supply via a button switch, and each contact is connected to the meter fast forward and digital display ON-OFF circuits, allowing one button switch to be used for two functions. The purpose of the present invention is to provide a radiation exposure meter with a simplified switching circuit.

そこで、以下に本考案の詳細を図示した実施例
に基づいて説明する。 Therefore, the details of the present invention will be explained below based on illustrated embodiments.

第２図は、本考案の一実施例を示す装置のブロ
ツク図であつて、電源ラインから駆動電力の供
給を受ける放射線検出回路２、メータ駆動回路
３、計数回路４、及びLED駆動回路５と、メー
タ早送り回路７と、LED表示器９をON−OFFす
る表示ON−OFF回路１０とからなる従来の放射
線被曝計において、接片が電源６に接続する第１
の切り換えスイツチ１の一方の接点を電源ライン
に接続し、これと連動する第２の切り換えスイ
ツチ８の接片を釦スイツチ１３を介して電源６に
接続し、ON側の接点は、トランジスタ１４を介
して表示ON−OFF回路１０を構成するトランジ
スタT₁，T₂のベースに接続し、OFF側の接点は
メータ早送り回路７に接続して切り換え回路が構
成されている。 FIG. 2 is a block diagram of a device showing an embodiment of the present invention, which includes a radiation detection circuit 2, a meter drive circuit 3, a counting circuit 4, and an LED drive circuit 5 that receive drive power from a power supply line. , a conventional radiation exposure meter consisting of a meter fast-forwarding circuit 7 and a display ON-OFF circuit 10 that turns an LED display 9 ON-OFF.
One contact of the changeover switch 1 is connected to the power supply line, the contact of the second changeover switch 8 interlocked with this is connected to the power supply 6 via the button switch 13, and the ON side contact is connected to the transistor 14. It is connected to the bases of transistors T ₁ and T ₂ constituting the display ON-OFF circuit 10 through the switch, and the OFF side contact is connected to the meter fast-forwarding circuit 7 to form a switching circuit.

なお、図中符号１５は、電流制限用の抵抗を示
している。 Note that the reference numeral 15 in the figure indicates a current limiting resistor.

この実施例によれば、第１、第２の切り換えス
イツチ１，８をOFF側にすると、電源６は、釦
スイツチ１３を介してメータ早送り回路７に接続
可能な状態となる。このような状態において釦ス
イツチ１３を押すと、ダイオード１２を介してメ
ータ駆動回路３に電力が供給され、同時にメータ
早送り回路７が作動してメータ駆動回路３に早送
りパルスが出力し、メータの指針が早送りされ
る。指針が零を指示した時点で釦スイツチ１３か
ら手を離すと、メータ駆動回路３、及びメータ早
送り回路７の作動が停止して装置がリセツトされ
た状態となる。 According to this embodiment, when the first and second changeover switches 1 and 8 are turned off, the power supply 6 becomes connectable to the meter fast-forwarding circuit 7 via the button switch 13. When the button switch 13 is pressed in this state, power is supplied to the meter drive circuit 3 via the diode 12, and at the same time, the meter fast-forward circuit 7 is activated and a fast-forward pulse is output to the meter drive circuit 3, causing the meter pointer to is fast forwarded. When the button switch 13 is released when the pointer indicates zero, the operation of the meter drive circuit 3 and meter fast-forward circuit 7 is stopped, and the device is reset.

次に、第１、第２の切り換えスイツチ１，８を
ON側に切り換えると、電源ラインに駆動電力
が供給されるとともに、トランジスタ１４のベー
スが電源に接続可能な状態となる。このような状
態において、装置を放射線照射区に設置すると、
放射線検出回路２からのパルスがオアゲート１１
を介してメータ駆動回路３に入力し、メータの指
針を被曝量に比例して回動する。同時に検出回路
２からのパルスは、計数回路４により計数され被
曝量の積算が行なわれる。この段階で釦スイツチ
１３を押すと、電源６からトランジスタ１４にバ
イアス電圧が印加して表示ON−OFF回路がON
となり、計数回路４の内容、つまり被曝量が
LED表示器９にデイジタル表示される。 Next, turn on the first and second changeover switches 1 and 8.
When switched to the ON side, drive power is supplied to the power supply line, and the base of the transistor 14 becomes connectable to the power supply. Under such conditions, if the device is installed in the radiation irradiation area,
The pulse from the radiation detection circuit 2 is sent to the OR gate 11
is inputted to the meter drive circuit 3 via the meter, and the pointer of the meter is rotated in proportion to the exposure amount. At the same time, the pulses from the detection circuit 2 are counted by the counting circuit 4 and the exposure amount is integrated. When the button switch 13 is pressed at this stage, a bias voltage is applied from the power supply 6 to the transistor 14 and the display ON-OFF circuit is turned on.
Therefore, the content of the counting circuit 4, that is, the exposure amount is
It is digitally displayed on the LED display 9.

以上、説明したように本考案によれば、切り換
えスイツチに各接点にメータ早送り回路LED表
示器を接続するとともに、この切り換えスイツチ
の接片と電源の間に釦スイツチを接続したので、
切り換えスイツチの接続位置により釦スイツチの
機能を変更することができ、１つの釦スイツチに
より早送りと、デイジタル表示のON−OFFを行
なうことができる。 As explained above, according to the present invention, a meter fast-forward circuit LED display is connected to each contact of the changeover switch, and a button switch is connected between the contact of the changeover switch and the power supply.
The function of the button switch can be changed depending on the connection position of the changeover switch, and one button switch can perform fast forwarding and ON/OFF of the digital display.

[Brief explanation of drawings]

第１図は、従来の放射線被曝計を示すブロツク
図、第２図は、本考案の一実施例を示すブロツク
図である。１，８……切り換えスイツチ、１２……誤動作
防止用ダイオード。 FIG. 1 is a block diagram showing a conventional radiation dosimeter, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1, 8... Selector switch, 12... Diode for preventing malfunction.

Claims

[Claims for Utility Model Registration] Meter driving means for driving an analog display means in proportion to pulses from the radiation detection means, a counting means for integrating the pulses, and outputting the count contents of the counting means to a digital display means. A radiation dosimeter comprising: a display on-off means for displaying, a digital display means for displaying the output from the display on-off means, a fast-forward means for fast-forwarding the analog display means, and a power supply means for driving each of the above-mentioned means. a first changeover switch that turns on and off the driving power of the radiation detection means, analog display means, meter drive means, counting means, and digital display means; and when the first changeover switch is off, at least the fast forwarding operation is performed. means and said meter drive means, and contacts selectively connected to said display on/off means when said first changeover switch is on, said contacts being connected to said display on/off means via a normally open switch. A radiation exposure meter characterized by comprising a second changeover switch connected to a power supply means and interlocked with the first changeover switch.