JPH02171684A - Heatwave-ultrasonic composite type burglar sensor - Google Patents
Heatwave-ultrasonic composite type burglar sensorInfo
- Publication number
- JPH02171684A JPH02171684A JP63326945A JP32694588A JPH02171684A JP H02171684 A JPH02171684 A JP H02171684A JP 63326945 A JP63326945 A JP 63326945A JP 32694588 A JP32694588 A JP 32694588A JP H02171684 A JPH02171684 A JP H02171684A
- Authority
- JP
- Japan
- Prior art keywords
- output
- heatwave
- ultrasonic
- type
- detected
- 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
- 239000002131 composite material Substances 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000001702 transmitter Effects 0.000 abstract 1
Abstract
PURPOSE: To secure a prescribed reception sensitivity irrespective of the direction of a detection area by providing a gain control means which varies the gain of a reception amplifier of a heatwave-type human body detecting sensor in accordance with the direction of the detection area.
CONSTITUTION: A heatwave-ultrasonic composite type burglar sensor has a construction wherein an ultrasonic-type sensor unit 1 and a heatwave-type sensor unit 2 are combined with each other by a signal processing circuit 3. An invader is detected by the signal processing circuit 3 on the basis of an output of each of the sensor units 1 and 2 and an alarm output means 7 is driven by an output of this signal processing circuit 3. The aforesaid ultrasonic-type sensor unit 1 is of a Doppler type, and a transmitter 11 is driven by an output of an oscillator 10 to transmit an ultrasonic wave, while reflection by an object is received by a receiver 12. An output of the receiver 12 is amplified by a received-wave amplifier 13, a reception signal thus obtained is compared with a transmission signal, the output of the oscillator 10, a frequency shift is detected by a frequency shift detector 14 on the basis of the comparison, and the presence of the invader is detected from this frequency shift.
COPYRIGHT: (C)1990,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63326945A JPH02171684A (en) | 1988-12-23 | 1988-12-23 | Heatwave-ultrasonic composite type burglar sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63326945A JPH02171684A (en) | 1988-12-23 | 1988-12-23 | Heatwave-ultrasonic composite type burglar sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02171684A true JPH02171684A (en) | 1990-07-03 |
Family
ID=18193528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63326945A Pending JPH02171684A (en) | 1988-12-23 | 1988-12-23 | Heatwave-ultrasonic composite type burglar sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02171684A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0682330A1 (en) * | 1994-05-09 | 1995-11-15 | Matsushita Electric Industrial Co., Ltd. | Detecting apparatus and measuring method of warm object |
| KR100472880B1 (en) * | 2002-10-21 | 2005-03-10 | (주)동남엔텍 | Microwave motion sensor module that use radio frequency and Perception method of object to use thereof |
| JP2005292129A (en) * | 2004-03-12 | 2005-10-20 | National Institute Of Advanced Industrial & Technology | Ultrasonic position measuring instrument |
-
1988
- 1988-12-23 JP JP63326945A patent/JPH02171684A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0682330A1 (en) * | 1994-05-09 | 1995-11-15 | Matsushita Electric Industrial Co., Ltd. | Detecting apparatus and measuring method of warm object |
| US5726449A (en) * | 1994-05-09 | 1998-03-10 | Matsushita Electric Industrial Co., Ltd | Detecting apparatus and measuring method of warm object |
| KR100472880B1 (en) * | 2002-10-21 | 2005-03-10 | (주)동남엔텍 | Microwave motion sensor module that use radio frequency and Perception method of object to use thereof |
| JP2005292129A (en) * | 2004-03-12 | 2005-10-20 | National Institute Of Advanced Industrial & Technology | Ultrasonic position measuring instrument |
| JP4543214B2 (en) * | 2004-03-12 | 2010-09-15 | 独立行政法人産業技術総合研究所 | Ultrasonic position measuring device |
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