JPS57121319A - Analogue-digital converter - Google Patents
Analogue-digital converterInfo
- Publication number
- JPS57121319A JPS57121319A JP592681A JP592681A JPS57121319A JP S57121319 A JPS57121319 A JP S57121319A JP 592681 A JP592681 A JP 592681A JP 592681 A JP592681 A JP 592681A JP S57121319 A JPS57121319 A JP S57121319A
- Authority
- JP
- Japan
- Prior art keywords
- frq
- conversion
- multiplexer
- converted
- voltage
- 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
Abstract
PURPOSE: To insulate the input and the output from each other completely and secure the simultaneity of conversion data, by counting plural input signals through an insulating circuit by a multichannel pulse counting device after subjecting them to voltage-frequency conversion.
CONSTITUTION: Analogue input signals a1∼an are converted to frequencies FRQ1∼FRQn by voltage-frequency converters 2'-1∼2'-n and are applied to a multiplexer 1' through insulating circuits 6-1∼6-n. When a command signal STT for the start of A/D conversion is given from a central processor CPU to an A/D conversion controlling circuit 3, the controlling circuit 3 takes out selectively contents of the multiplexer 1' and an n×N-bit memory 7, and pulse train signals FRQ1∼FRQn are counted for a constant time and are converted to digital values.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP592681A JPS57121319A (en) | 1981-01-20 | 1981-01-20 | Analogue-digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP592681A JPS57121319A (en) | 1981-01-20 | 1981-01-20 | Analogue-digital converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57121319A true JPS57121319A (en) | 1982-07-28 |
Family
ID=11624489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP592681A Pending JPS57121319A (en) | 1981-01-20 | 1981-01-20 | Analogue-digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57121319A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02216915A (en) * | 1989-02-16 | 1990-08-29 | Yokogawa Electric Corp | Multi-point measuring instrument |
US8342702B2 (en) | 2007-10-16 | 2013-01-01 | Honda Motor Co., Ltd. | Vehicle door mirror mount structure |
-
1981
- 1981-01-20 JP JP592681A patent/JPS57121319A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02216915A (en) * | 1989-02-16 | 1990-08-29 | Yokogawa Electric Corp | Multi-point measuring instrument |
US8342702B2 (en) | 2007-10-16 | 2013-01-01 | Honda Motor Co., Ltd. | Vehicle door mirror mount structure |
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