JPS56100302A - Object detector for electric field type mobile body - Google Patents
Object detector for electric field type mobile bodyInfo
- Publication number
- JPS56100302A JPS56100302A JP332880A JP332880A JPS56100302A JP S56100302 A JPS56100302 A JP S56100302A JP 332880 A JP332880 A JP 332880A JP 332880 A JP332880 A JP 332880A JP S56100302 A JPS56100302 A JP S56100302A
- Authority
- JP
- Japan
- Prior art keywords
- mobile body
- lines
- parallel
- electric field
- type mobile
- 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 Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
Abstract
PURPOSE: To suitably grasp a mobile body, by installing two detection lines bent in rectangular shape in a vertical plane with a shift with each other in parallel with ground, applying a high frequency voltage via a capacitor, and detecting the phase difference of a detection signal picked up from one end of the detection lines.
CONSTITUTION: Two detection lines A1, A2 bent in rectangular shape in a vertical plane are installed in parallel with ground G with a shift of almost 1/4 period and a high frequency voltage (e) is fed via a capacitor 2. Outputs Vc1, Vc2 via an amplifier 4, detector 5 and wave forming circut 6 connected to ends a1, a2 of the lines A1, A2 are fed to a mobile direction detecting circuit 7, where the phase of both signals is compared. The direction of movement of a mobile body M which moves in parallel with the lines A1, A2, toward X1, X2, is detected by the phase difference. Thus, the mobile body can suitably be grasped.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP332880A JPS56100302A (en) | 1980-01-15 | 1980-01-15 | Object detector for electric field type mobile body |
| US06/221,818 US4366473A (en) | 1980-01-15 | 1980-12-31 | Capacitively coupled electromagnetic intrusion warning system |
| CA000368501A CA1160314A (en) | 1980-01-15 | 1981-01-14 | Intrusion warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP332880A JPS56100302A (en) | 1980-01-15 | 1980-01-15 | Object detector for electric field type mobile body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56100302A true JPS56100302A (en) | 1981-08-12 |
| JPS6239471B2 JPS6239471B2 (en) | 1987-08-24 |
Family
ID=11554279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP332880A Granted JPS56100302A (en) | 1980-01-15 | 1980-01-15 | Object detector for electric field type mobile body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56100302A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927397A (en) * | 1982-05-14 | 1984-02-13 | センスタ−・セキユリテイ・システムズ・コ−ポレイシヨン | Invasion detector |
-
1980
- 1980-01-15 JP JP332880A patent/JPS56100302A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927397A (en) * | 1982-05-14 | 1984-02-13 | センスタ−・セキユリテイ・システムズ・コ−ポレイシヨン | Invasion detector |
| JPH0327959B2 (en) * | 1982-05-14 | 1991-04-17 | Sensutaa Sekyuritei Shisutemuzu Corp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6239471B2 (en) | 1987-08-24 |
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