JPH0444980U - - Google Patents
Info
- Publication number
- JPH0444980U JPH0444980U JP8628190U JP8628190U JPH0444980U JP H0444980 U JPH0444980 U JP H0444980U JP 8628190 U JP8628190 U JP 8628190U JP 8628190 U JP8628190 U JP 8628190U JP H0444980 U JPH0444980 U JP H0444980U
- Authority
- JP
- Japan
- Prior art keywords
- area sensor
- area
- time
- sensor
- emits
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Description
第１図はこの考案の実施例を示す平面図である
。第２図はエリアセンサＡとエリアセンサＢの設
置方法の実施例を示す要部断面図である。
Ａ，Ｂ……エリアセンサ、１……エリアセンサ
Ａの検出エリア、２……エリアセンサＢの検出エ
リア、３……判定エリア、４……電線、５……電
子回路、６……ブザー、７……ランプ、８……テ
ニスコート、９……地面、１０……ボール。
FIG. 1 is a plan view showing an embodiment of this invention. FIG. 2 is a sectional view of a main part showing an embodiment of the method of installing area sensor A and area sensor B. A, B... Area sensor, 1... Detection area of area sensor A, 2... Detection area of area sensor B, 3... Judgment area, 4... Electric wire, 5... Electronic circuit, 6... Buzzer, 7... lamp, 8... tennis court, 9... ground, 10... ball.
Claims (1)
とエリアセンサＢを、各エリアセンサの検出する
エリアが重なる様に設置し、この重なつたエリア
に、ボールがくると、エリアセンサＡとエリアセ
ンサＢの検出信号が同時に出力され、この時、音
または光の信号が発する装置。 Area sensor A is installed at a predetermined position on the tennis court.
and area sensor B are installed so that the detection areas of each area sensor overlap, and when a ball comes to this overlapping area, the detection signals of area sensor A and area sensor B are output at the same time, and at this time, A device that emits a sound or light signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8628190U JPH0444980U (en) | 1990-08-17 | 1990-08-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8628190U JPH0444980U (en) | 1990-08-17 | 1990-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444980U true JPH0444980U (en) | 1992-04-16 |
Family
ID=31817869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8628190U Pending JPH0444980U (en) | 1990-08-17 | 1990-08-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444980U (en) |
-
1990
- 1990-08-17 JP JP8628190U patent/JPH0444980U/ja active Pending
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