PH12012502400A1 - Object detection device - Google Patents
Object detection deviceInfo
- Publication number
- PH12012502400A1 PH12012502400A1 PH1/2012/502400A PH12012502400A PH12012502400A1 PH 12012502400 A1 PH12012502400 A1 PH 12012502400A1 PH 12012502400 A PH12012502400 A PH 12012502400A PH 12012502400 A1 PH12012502400 A1 PH 12012502400A1
- Authority
- PH
- Philippines
- Prior art keywords
- digital signal
- signal
- circuit
- convert
- frequency band
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 2
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The object detection device includes: a pyroelectric element configured to output a current signal inresponse to a change in an amount of infrared light; an I/V conversion circuit including an operational amplifier, capacitive element serving as a feedback circuit, and a discharging circuit, and configured to convert the current signal to a voltage signal; an A/D conversion circuit configured to convert the voltage signal to a first digital signal; a digital filter configured to extract a detection component having a frequency included in a frequency band associated with an object from a waveform represented by the first digital signal by subjecting the first digital signal to an arithmetic processing, and create a second digital signal representing a waveform of the detection component; a judgment circuit configured to detect the target based on the second digital signal; and a control unit configured to control the discharging circuit based on a period corresponding to a predetermined frequency not greater than a lower limit of the frequency band to discharge electric charges stored in the capacitive element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010151392A JP5685717B2 (en) | 2010-07-01 | 2010-07-01 | Infrared detector |
| PCT/JP2011/065063 WO2012002496A1 (en) | 2010-07-01 | 2011-06-30 | Target object detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PH12012502400A1 true PH12012502400A1 (en) | 2013-02-04 |
Family
ID=45600186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PH1/2012/502400A PH12012502400A1 (en) | 2010-07-01 | 2011-06-30 | Object detection device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5685717B2 (en) |
| PH (1) | PH12012502400A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013014810B4 (en) * | 2013-09-05 | 2019-03-14 | Elmos Semiconductor Aktiengesellschaft | Device for operating passive infrared sensors |
| JP6399447B2 (en) * | 2014-09-26 | 2018-10-03 | パナソニックＩｐマネジメント株式会社 | Infrared detector |
| KR102270631B1 (en) * | 2020-08-05 | 2021-06-29 | 주식회사 커니스 | PIR sensor unit with high sensitivity |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0738545B2 (en) * | 1988-05-12 | 1995-04-26 | 株式会社村田製作所 | Signal generation circuit for charge generation type sensing element |
| JP3385971B2 (en) * | 1998-06-26 | 2003-03-10 | 松下電工株式会社 | Infrared detector |
| JP4006985B2 (en) * | 2001-11-27 | 2007-11-14 | 松下電工株式会社 | Pyroelectric infrared detector |
| JP2006203009A (en) * | 2005-01-21 | 2006-08-03 | Yamajiyu Ceramics:Kk | Pyroelectric infrared detector and pyroelectric infrared detector |
| TW201003081A (en) * | 2008-05-09 | 2010-01-16 | Panasonic Elec Works Co Ltd | Sensor device |
-
2010
- 2010-07-01 JP JP2010151392A patent/JP5685717B2/en active Active
-
2011
- 2011-06-30 PH PH1/2012/502400A patent/PH12012502400A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012013578A (en) | 2012-01-19 |
| JP5685717B2 (en) | 2015-03-18 |
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