JPS5790113A - Flow rate sensor - Google Patents
Flow rate sensorInfo
- Publication number
- JPS5790113A JPS5790113A JP55166234A JP16623480A JPS5790113A JP S5790113 A JPS5790113 A JP S5790113A JP 55166234 A JP55166234 A JP 55166234A JP 16623480 A JP16623480 A JP 16623480A JP S5790113 A JPS5790113 A JP S5790113A
- Authority
- JP
- Japan
- Prior art keywords
- optical fibers
- fluid
- lens array
- rod lens
- flow rate
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
PURPOSE:To obtain a flow rate sensor having a complete explosion-proofproperty as well as a high noise resistance, by arranging a plurality of input and output optical fibers in a fluid so that the end surfaces thereof respectively face to each other. CONSTITUTION:A rod lens array 4 and optical fibers 3 connected thereto are arranged at constant pitches so as to be in a row in the direction of the flow F of a fluid. The optical fibers 3 are alternately put together to form bundles 6 and 7. Photoelectric transducers d1, d2 are disposed at the end surfaces of the fiber bundles 6, 7 respectively. A rod lens array 4' and optical fibers 3' of the same arrangement are disposed facing to the above-mentioned rod lens array 4 and optical fibers 3. The optical fibers 3' are put together to form a bundle 5, and a light source L and a lens are disposed at the end surface thereof. Owing to the suspended matter (air bubbles may be included) in the fluid, the light incident from the input fiber bundle 5 forms a Moir e pattern on the rod lens array 4, and the velocity of the fluid is obtained from the varying period of the sum of the outputs of the photoelectric transducers d1 and d2. Thereby, it is possible to obtain a flow rate sensor having a complete explosion-proofproperty as well as a high noise resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55166234A JPS5790113A (en) | 1980-11-25 | 1980-11-25 | Flow rate sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55166234A JPS5790113A (en) | 1980-11-25 | 1980-11-25 | Flow rate sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5790113A true JPS5790113A (en) | 1982-06-04 |
Family
ID=15827592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55166234A Pending JPS5790113A (en) | 1980-11-25 | 1980-11-25 | Flow rate sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5790113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197825A (en) * | 1983-04-26 | 1984-11-09 | Mitsubishi Motors Corp | Detector of intake quantity of engine |
-
1980
- 1980-11-25 JP JP55166234A patent/JPS5790113A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197825A (en) * | 1983-04-26 | 1984-11-09 | Mitsubishi Motors Corp | Detector of intake quantity of engine |
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