JPS6358772U - - Google Patents
Info
- Publication number
- JPS6358772U JPS6358772U JP15335686U JP15335686U JPS6358772U JP S6358772 U JPS6358772 U JP S6358772U JP 15335686 U JP15335686 U JP 15335686U JP 15335686 U JP15335686 U JP 15335686U JP S6358772 U JPS6358772 U JP S6358772U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- radiation
- series circuit
- signal
- signal current
- 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.)
- Granted
Links
- 230000005855 radiation Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
第１図は本考案の一実施例の構成図、第２図は
ダイオードの電圧・電流特性説明図、第３図は従
来の多レンジ放射線測定器の第１例の構成図、第
４図は従来の多レンジ放射線測定器の第２例にお
ける要部説明図である。
３……放射線検出部、４……基準電位、５，１
５……演算増幅器、５ｂ……第２入力端子、５ｃ
……出力端子、６……スイツチ、１７〜１９……
直列回路、２６……電圧補正回路、Ｉ……信号電
流、Ｖａ……信号電圧、Ｒ２〜Ｒ４……帰還抵抗
器、Ｒ５〜Ｒ７……接地抵抗器、Ｄ２〜Ｄ４……
ダイオード。
Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a diagram explaining the voltage/current characteristics of a diode, Fig. 3 is a block diagram of the first example of a conventional multi-range radiation measuring instrument, and Fig. 4 is a block diagram of the first example of a conventional multi-range radiation measuring instrument. FIG. 6 is an explanatory diagram of main parts in a second example of a conventional multi-range radiation measuring device. 3...Radiation detection section, 4...Reference potential, 5,1
5...Operation amplifier, 5b...Second input terminal, 5c
...Output terminal, 6...Switch, 17-19...
Series circuit, 26...Voltage correction circuit, I...Signal current, Va...Signal voltage, R2 to R4 ...Feedback resistor, R5 to R7 ...Grounding resistor, D2 to D4 ... …
diode.
Claims (1)
電流を出力する放射線検出部と、前記信号電流が
入力される入力端子を有し前記信号電流が入力さ
れると該信号電流に応じた信号電圧を出力する増
幅回路と、前記増幅回路の前記入力端子に各一端
が接続された複数個の直列回路と、前記直列回路
の各他端を切り換えて前記増幅回路の出力端子に
接続する回路切り換え器と、前記直列回路の各他
端をそれぞれ基準電位に接続する接地抵抗器と、
前記信号電圧に対して所定の補正を行う電圧補正
回路とを備え、前記電圧補正回路の出力信号にも
とづき前記放射線の量を測定するものであつて、
前記接地抵抗器には低い抵抗値が与えられており
、また前記直列回路は該直列回路ごとに異なる抵
抗値を有する帰還抵抗器とダイオードとで形成さ
れていることを特徴とする多レンジ放射線測定器
。 a radiation detection unit that detects radiation and outputs a signal current according to the amount of radiation; and an input terminal into which the signal current is input, and when the signal current is input, a signal voltage according to the signal current. a plurality of series circuits each having one end connected to the input terminal of the amplifier circuit; and a circuit switching device switching each other end of the series circuit to connect the other end of the series circuit to the output terminal of the amplifier circuit. and a grounding resistor connecting each other end of the series circuit to a reference potential, respectively;
and a voltage correction circuit that performs a predetermined correction on the signal voltage, and measures the amount of radiation based on the output signal of the voltage correction circuit,
A multi-range radiation measurement characterized in that the grounding resistor is given a low resistance value, and the series circuit is formed of a feedback resistor and a diode each having a different resistance value for each series circuit. vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15335686U JPH0541423Y2 (en) | 1986-10-06 | 1986-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15335686U JPH0541423Y2 (en) | 1986-10-06 | 1986-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6358772U true JPS6358772U (en) | 1988-04-19 |
| JPH0541423Y2 JPH0541423Y2 (en) | 1993-10-20 |
Family
ID=31072165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15335686U Expired - Lifetime JPH0541423Y2 (en) | 1986-10-06 | 1986-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0541423Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001096903A1 (en) * | 2000-06-12 | 2001-12-20 | Hitachi Medical Corporation | X-ray sensor and x-ray ct apparatus comprising it |
-
1986
- 1986-10-06 JP JP15335686U patent/JPH0541423Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001096903A1 (en) * | 2000-06-12 | 2001-12-20 | Hitachi Medical Corporation | X-ray sensor and x-ray ct apparatus comprising it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0541423Y2 (en) | 1993-10-20 |
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