JPS5684557A - Speed detector - Google Patents
Speed detectorInfo
- Publication number
- JPS5684557A JPS5684557A JP16116979A JP16116979A JPS5684557A JP S5684557 A JPS5684557 A JP S5684557A JP 16116979 A JP16116979 A JP 16116979A JP 16116979 A JP16116979 A JP 16116979A JP S5684557 A JPS5684557 A JP S5684557A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- autocorrelation function
- impressed
- speed
- 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
Landscapes
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To obtain the device of simple constitution wherein a signal corresponding to a speed is obtained as a frequency signal by detecting a moving speed by using a noise signal which has a prescribed spatial autocorrelation function obtained from a moving body.
CONSTITUTION: Noises in a pipeline 1 through which a fluid to be measured flows are detected 2, amplified 3 and inputted in a delay circuit 4. A delay time τ0 in the delay circuit 4 is controlled by a frequency signal f0 impressed on a terminal 41. The delay circuit 4, an OR circuit 5 and an integrating circuit 6 constitute an operation circuit for the autocorrelation function of a signal en from a noise detecting means 2, outputting an autocorrelation function signal ϕ. This signal ϕ is goven to one input terminal of a difference operating circuit 7, while on the other input terminal thereof is impressed a reference voltage Es corresponding to an autocorrelation function value ϕ00, and a difference signal ε is impressed on a voltage-controlled oscillator 8 so that the delay time is to be ϕ=ϕ00. As the result, the frequency signal f0 turns to be proportional to the speed of flow.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16116979A JPS5684557A (en) | 1979-12-12 | 1979-12-12 | Speed detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16116979A JPS5684557A (en) | 1979-12-12 | 1979-12-12 | Speed detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5684557A true JPS5684557A (en) | 1981-07-09 |
Family
ID=15729897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16116979A Pending JPS5684557A (en) | 1979-12-12 | 1979-12-12 | Speed detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5684557A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117031540A (en) * | 2023-08-01 | 2023-11-10 | 北京阳光吉澳能源技术有限公司 | Micro-motion detection data processing method, system, device and medium |
-
1979
- 1979-12-12 JP JP16116979A patent/JPS5684557A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117031540A (en) * | 2023-08-01 | 2023-11-10 | 北京阳光吉澳能源技术有限公司 | Micro-motion detection data processing method, system, device and medium |
CN117031540B (en) * | 2023-08-01 | 2024-02-13 | 北京阳光吉澳能源技术有限公司 | Micro-motion detection data processing method, system, device and medium |
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