JPS5686371A - Automatic control device for ultrasonic pulse width - Google Patents
Automatic control device for ultrasonic pulse widthInfo
- Publication number
- JPS5686371A JPS5686371A JP16272979A JP16272979A JPS5686371A JP S5686371 A JPS5686371 A JP S5686371A JP 16272979 A JP16272979 A JP 16272979A JP 16272979 A JP16272979 A JP 16272979A JP S5686371 A JPS5686371 A JP S5686371A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- trigger pulse
- control device
- counter
- supplied
- 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.)
- Granted
Links
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To realize an automatic decision of the ultrasonic pulse width with one trigger pulse setting switch and to increase the controllability of a control device, by setting the width of the ultrasonic pulse in accordance with the interval of the trigger pulse on a fish detector.
CONSTITUTION: When one negative trigger pulse is supplied to the terminal 9 from the oscillation trigger part, the output of the terminal 16 turns to "H". The down- clock is applied to the counter 15 from the oscillator circuit 8, and the output 16 becomes "L" when the contents of the counter 15 becomes zero. At the same time, the up-clock is supplied to the counter 15 from the oscillator circuit 10 to continue up-counting until the next trigger pulse is supplied. Accordingly, the interval of the trigger pulse is decided by the ratio of the up to down count times, thus ensuring an automatic decision for the width of the pulse delivered from the terminal 16.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54162729A JPS597949B2 (en) | 1979-12-17 | 1979-12-17 | Ultrasonic pulse width automatic control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54162729A JPS597949B2 (en) | 1979-12-17 | 1979-12-17 | Ultrasonic pulse width automatic control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5686371A true JPS5686371A (en) | 1981-07-14 |
JPS597949B2 JPS597949B2 (en) | 1984-02-21 |
Family
ID=15760154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54162729A Expired JPS597949B2 (en) | 1979-12-17 | 1979-12-17 | Ultrasonic pulse width automatic control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS597949B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6110581U (en) * | 1984-06-25 | 1986-01-22 | 日本無線株式会社 | Transmission circuit for fish finder |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01158738U (en) * | 1988-04-22 | 1989-11-02 |
-
1979
- 1979-12-17 JP JP54162729A patent/JPS597949B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6110581U (en) * | 1984-06-25 | 1986-01-22 | 日本無線株式会社 | Transmission circuit for fish finder |
Also Published As
Publication number | Publication date |
---|---|
JPS597949B2 (en) | 1984-02-21 |
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