JPS5745482A - Automatic detector for moving body - Google Patents
Automatic detector for moving bodyInfo
- Publication number
- JPS5745482A JPS5745482A JP55121991A JP12199180A JPS5745482A JP S5745482 A JPS5745482 A JP S5745482A JP 55121991 A JP55121991 A JP 55121991A JP 12199180 A JP12199180 A JP 12199180A JP S5745482 A JPS5745482 A JP S5745482A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- level
- converter
- detect
- scanning
- 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
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
Abstract
PURPOSE:To detect a body securely in a broad region by picking up an image of a monitoring area through an image pickup tube, then stores and delayes a video signal detected by a scan on the tube surface, and by comparing its level with the level of a following video signal at the same scanning position. CONSTITUTION:Every time a clock pulse (a) is supplied, a binary counter 2 counts up and a D/A converter 3 converts its discrete value into an analog signal successively to generate a saw tooth wave (b) for a horizontal sweep off of 256-stage. Simultaneously, a D/A converter 7 generates a saw tooth wave (d) for a vertical sweep off of a step level which corresponds to the discrete value of the binary counter 6, and a raster scan on a vidicon 1 is taken while horizontal scanning lines driven in 256 stages are successively shifted vertically by four. Then, the result is stored in a storing circuit 12 and a subtracting circuit 16 compares a video signal at an actual time with that preceding it by one scanning period at every scanning point to detect a moving body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121991A JPS5745482A (en) | 1980-09-02 | 1980-09-02 | Automatic detector for moving body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121991A JPS5745482A (en) | 1980-09-02 | 1980-09-02 | Automatic detector for moving body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5745482A true JPS5745482A (en) | 1982-03-15 |
Family
ID=14824849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55121991A Pending JPS5745482A (en) | 1980-09-02 | 1980-09-02 | Automatic detector for moving body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5745482A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6039581A (en) * | 1983-08-13 | 1985-03-01 | Shigumatsukusu Kk | Object detecting device |
| JPS6241193A (en) * | 1985-08-15 | 1987-02-23 | 清水建設株式会社 | Method of discriminating approach of crane boom |
| JPS62259991A (en) * | 1986-05-07 | 1987-11-12 | 清水建設株式会社 | Boom access alarm system for walking type crane |
| JPS6428581A (en) * | 1987-07-23 | 1989-01-31 | Tokyo Electric Power Co | Monitoring method and apparatus with tv camera |
| JPH01112189A (en) * | 1988-04-15 | 1989-04-28 | Shigumatsukusu Kk | Body detecting device |
| JPH05249250A (en) * | 1991-04-12 | 1993-09-28 | Shigumatsukusu Kk | Object detecting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54106263A (en) * | 1978-02-09 | 1979-08-21 | Anritsu Electric Co Ltd | Detecting apparatus of matter |
| JPS5587072A (en) * | 1978-12-25 | 1980-07-01 | Hajime Sangyo Kk | Inspection unit of object |
-
1980
- 1980-09-02 JP JP55121991A patent/JPS5745482A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54106263A (en) * | 1978-02-09 | 1979-08-21 | Anritsu Electric Co Ltd | Detecting apparatus of matter |
| JPS5587072A (en) * | 1978-12-25 | 1980-07-01 | Hajime Sangyo Kk | Inspection unit of object |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6039581A (en) * | 1983-08-13 | 1985-03-01 | Shigumatsukusu Kk | Object detecting device |
| JPS6241193A (en) * | 1985-08-15 | 1987-02-23 | 清水建設株式会社 | Method of discriminating approach of crane boom |
| JPS62259991A (en) * | 1986-05-07 | 1987-11-12 | 清水建設株式会社 | Boom access alarm system for walking type crane |
| JPS6428581A (en) * | 1987-07-23 | 1989-01-31 | Tokyo Electric Power Co | Monitoring method and apparatus with tv camera |
| JPH01112189A (en) * | 1988-04-15 | 1989-04-28 | Shigumatsukusu Kk | Body detecting device |
| JPH05249250A (en) * | 1991-04-12 | 1993-09-28 | Shigumatsukusu Kk | Object detecting device |
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