JPS54148457A - Integral analog input device - Google Patents
Integral analog input deviceInfo
- Publication number
- JPS54148457A JPS54148457A JP5659178A JP5659178A JPS54148457A JP S54148457 A JPS54148457 A JP S54148457A JP 5659178 A JP5659178 A JP 5659178A JP 5659178 A JP5659178 A JP 5659178A JP S54148457 A JPS54148457 A JP S54148457A
- Authority
- JP
- Japan
- Prior art keywords
- noise
- frequency
- control
- integrating
- signal
- 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 eliminate the extenal noise when the analog signals are integrated and thus to reduce the error by varying the oscillation frequency which determines the sampling and integrating cycles.
CONSTITUTION: The internal control signals are produced by using external AC input 6 (such as commerical frequency) given from the subject system as the fundamental frequency. The zero point of input 6 is detected through zero-point detection circuit 10 to deliver basic clock 23. Receiving this output, divider circuit delivers division signal 13 which is necessary for the internal operation. Control circuit 18 performs the counting action for signal 13 and delivers a series of control signal 8 to control the integrating action, writing into register 4 and others. In this way, both the sampling and integrating cycles can be varied in accordance with the frequency variation of the subject system. Thus, the external noise can be eliminated, reducing the error caused by the noise.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5659178A JPS54148457A (en) | 1978-05-15 | 1978-05-15 | Integral analog input device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5659178A JPS54148457A (en) | 1978-05-15 | 1978-05-15 | Integral analog input device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54148457A true JPS54148457A (en) | 1979-11-20 |
Family
ID=13031424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5659178A Pending JPS54148457A (en) | 1978-05-15 | 1978-05-15 | Integral analog input device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54148457A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5943436A (en) * | 1982-09-01 | 1984-03-10 | Chino Works Ltd | Input circuit |
JPS6387573U (en) * | 1986-11-27 | 1988-06-07 |
-
1978
- 1978-05-15 JP JP5659178A patent/JPS54148457A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5943436A (en) * | 1982-09-01 | 1984-03-10 | Chino Works Ltd | Input circuit |
JPS6322330B2 (en) * | 1982-09-01 | 1988-05-11 | Chino Corp | |
JPS6387573U (en) * | 1986-11-27 | 1988-06-07 |
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