JPH0186730U - - Google Patents
Info
- Publication number
- JPH0186730U JPH0186730U JP18313687U JP18313687U JPH0186730U JP H0186730 U JPH0186730 U JP H0186730U JP 18313687 U JP18313687 U JP 18313687U JP 18313687 U JP18313687 U JP 18313687U JP H0186730 U JPH0186730 U JP H0186730U
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- switch
- integration
- voltage
- conversion circuit
- 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.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図はこの考案に係るＡ／Ｄ変換回路の構成
の一例を示すブロツク線図、第２図は動作説明用
の波形図、第３図ないし第５図は従来装置のブロ
ツク線図である。
図中、１はアナログ電圧積分手段、３は積分器
、４はコンパレータ、５は絶縁手段、６，７，８
はフオトカプラ、９はデイジタルデータ形成手段
、１０は切換制御器、１１はクロツク発生器、１
２はカウンタ、１３はラツチ回路である。
Fig. 1 is a block diagram showing an example of the configuration of the A/D conversion circuit according to this invention, Fig. 2 is a waveform diagram for explaining operation, and Figs. 3 to 5 are block diagrams of conventional devices. . In the figure, 1 is an analog voltage integrating means, 3 is an integrator, 4 is a comparator, 5 is an insulating means, 6, 7, 8
9 is a photocoupler, 9 is a digital data forming means, 10 is a switching controller, 11 is a clock generator, 1
2 is a counter, and 13 is a latch circuit.
Claims (1)
圧とをスイツチにより積分器に切り換え入力して
積分と逆積分を行い、その一方の積分電圧が他方
の逆積分電圧によりゼロに達したことをコンパレ
ータにて検出するアナログ電圧積分手段と、上記
スイツチの切換制御器を含み、上記コンパレータ
からのゼロ検出信号によりカウンタのクロツク計
数値をラツチ回路に保持し上記被測定アナログ信
号のデイジタル変換データとして送出するデイジ
タルデータ形成手段とを有するＡ／Ｄ変換回路に
おいて、 上記スイツチと上記切換制御器間、及び上記コ
ンパレータと上記ラツチ回路間の各信号路にはそ
れぞれフオトカプラからなる絶縁手段が設けられ
ていることを特徴とするＡ／Ｄ変換回路。[Claim for Utility Model Registration] The input voltage of the analog signal to be measured and a predetermined reference voltage are switched and input to the integrator using a switch, and integration and inverse integration are performed, and one of the integrated voltages is determined by the other inverse integrated voltage. It includes analog voltage integration means for detecting reaching zero with a comparator, and a switching controller for the switch, and the clock count value of the counter is held in a latch circuit by the zero detection signal from the comparator, and the analog signal to be measured is In the A/D conversion circuit, the A/D conversion circuit has a digital data forming means for sending out digitally converted data, and each signal path between the switch and the switching controller and between the comparator and the latch circuit is provided with insulating means consisting of a photocoupler. An A/D conversion circuit characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18313687U JPH0186730U (en) | 1987-11-30 | 1987-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18313687U JPH0186730U (en) | 1987-11-30 | 1987-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0186730U true JPH0186730U (en) | 1989-06-08 |
Family
ID=31474568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18313687U Pending JPH0186730U (en) | 1987-11-30 | 1987-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0186730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06342306A (en) * | 1990-08-24 | 1994-12-13 | Samsung Electron Co Ltd | Multiplex frequency guiding device of unmanned carrier vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840941B2 (en) * | 1978-07-10 | 1983-09-08 | ダイセル化学工業株式会社 | Method for producing alkylamines |
-
1987
- 1987-11-30 JP JP18313687U patent/JPH0186730U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840941B2 (en) * | 1978-07-10 | 1983-09-08 | ダイセル化学工業株式会社 | Method for producing alkylamines |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06342306A (en) * | 1990-08-24 | 1994-12-13 | Samsung Electron Co Ltd | Multiplex frequency guiding device of unmanned carrier vehicle |
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