JPS5530777A - Fry counter - Google Patents
Fry counterInfo
- Publication number
- JPS5530777A JPS5530777A JP10370278A JP10370278A JPS5530777A JP S5530777 A JPS5530777 A JP S5530777A JP 10370278 A JP10370278 A JP 10370278A JP 10370278 A JP10370278 A JP 10370278A JP S5530777 A JPS5530777 A JP S5530777A
- Authority
- JP
- Japan
- Prior art keywords
- fry
- sensor
- stream
- shadow
- detects
- 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
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
PURPOSE: To enable to count the number of fry, simply, quickly, and in high accuracy, by giving light downward the measuring stream and counting the shadow of fry caused with the photo sensors provided in the stream.
CONSTITUTION: Taking the angle of the arm 7 and the light source 5 intersecting the measuring stream 4 as θ, the velocity of water of the stream 4 as v1, and running speed of the photo sensor as v2, then θ=tan-1(v1/v2). If θ is set like this, the sensor 8 is as if it were at standstill to water flow. When the sensor 8 finishes the atream 4 with crossing over, the reset switch 10 immediately operates and it returns to original position in high speed (near the sprocket B1). Next, the sensor 8 detects the shadow of D for the next fry row delayed by the length of body of fry D and counts it. Thus, every time when the sensor 8 detects the number of projections of D, it is integrated with the counter 11 to accumulate the number of every fry row.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10370278A JPS5530777A (en) | 1978-08-25 | 1978-08-25 | Fry counter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10370278A JPS5530777A (en) | 1978-08-25 | 1978-08-25 | Fry counter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5530777A true JPS5530777A (en) | 1980-03-04 |
Family
ID=14361078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10370278A Pending JPS5530777A (en) | 1978-08-25 | 1978-08-25 | Fry counter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5530777A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6361078U (en) * | 1986-10-03 | 1988-04-22 |
-
1978
- 1978-08-25 JP JP10370278A patent/JPS5530777A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6361078U (en) * | 1986-10-03 | 1988-04-22 |
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