GB2269011A - A PIR sensor device. - Google Patents
A PIR sensor device. Download PDFInfo
- Publication number
- GB2269011A GB2269011A GB9314967A GB9314967A GB2269011A GB 2269011 A GB2269011 A GB 2269011A GB 9314967 A GB9314967 A GB 9314967A GB 9314967 A GB9314967 A GB 9314967A GB 2269011 A GB2269011 A GB 2269011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- housing
- pir sensor
- lens
- sensor device
- appliance
- 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
- 239000000463 material Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Combustion (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Fire Alarms (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A miniaturised and sealed PIR sensor device adapted to be positioned within the body of a lighting appliance and comprising a housing (10) with integrally moulded lens (12) and containing a PIR sensor (14) behind the lens (12) and associated switching circuitry (15) contained within the housing (10). A sealing substance (16) fills the remaining space of the housing (10) beneath a welded-on back plate (11). The device may be located conveniently behind the mounting plate of a wall mounted lighting appliance with the lens (12) exposed by or projecting through a small aperture in the appliance. The device obviates the need for a separate PIR housing alongside of beneath the appliance.
Description
2269011 A PIR SENSOR DEVICE THIS INVENTION concerns passive infra-red
(PIR) sensors which are commonly used to actuate lighting appliances when movement is detected in the vicinity of the sensor.
PIR sensors are usually contained within a housing of a non-translucent material to which is attached a multi-facet lens. The housing contains a printed circuit board and switching components.
In order that the PIR sensor should be contained inconspicuously as part of a lighting appliance, there is a desire to house the essential components in as small a space as possible and preferably such that it can be positioned behind the mounting plate of a typical domestic exterior light.
It is an object of the present invention to provide a PIR sensor device in which the electronic components of the switching circuit, together with a lens and the PIR sensor itself are all contained in a single housing of minimal dimensions.
According to the present invention there is provided a PIR sensor device comprising a moulded housing having an open back and adapted to contain electronic switching components, a lens integrally moulded with and positioned on a front face of the housing and adapted to contain a PIR sensor, and a closure for the open back, the housing and lens being moulded from a material which is translucent to infra-red light.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:- Fig. 1 is a side elevation of a PIR sensor device made in accordance with the invention; and Fig. 2 is a horizontal section taken on line II-II of Fig.
The device essentially comprises a housing 10 and a back plate 11. The housing 10 is injection moulded from a material which is translucent to infra-red light and includes a lens 12 of generally hemispherical shape which extends forwardly from the otherwise flat front face of the housing. The internal surface of the lens 12 is formed with facets 13.
Thus there is formed a generally rectilinear box into which a PIR sensor 14 and a printed circuit board with electronic switching components generally indicated at 15, are housed. The printed circuit board may be retained by bonding or by fastening screws within the housing.
After insertion of the PIR sensor and circuit-board any residual space within the housing 10 is filled with a wax or similar scaling material 16. Finally, the back plate 11 is applied as a further closure for the housing, preferably by ultrasonic welding. Alternatively, the back may be a snap-on fit and sealed with an adhesive or other sealing compound.
The material from which the housing is injection moulded is translucent to infra-red light and the external surface other than the lens housing 12 may be textured to render the internal components substantially invisible from the outside of the housing whilst the lens 12 will usually be smooth.
Typically, the housing will be 60mm long, 40mm wide and 15mm deep (excluding the lens housing 12).
For connection to a lighting appliance, usually 3 wires will extend through the housing wall from the circuitry contained therein.
It will be appreciated that the miniaturised and sealed PIR sensor device described herein may be positioned conveniently within the back plate of a wall-mounted lighting appliance, with the lens 12 exposed by or projecting through an aperture of some 20mm in diameter in the appliance. With this arrangement the need for a separate PIR housing beneath the appliance is avoided.
Claims (9)
1. A PIR sensor device comprising a moulded housing having an open back and adapted to contain electronic switching components, a lens integrally moulded with and positioned on a front face of the housing and adapted to contain a PIR sensor, and a closure for the open back, the housing and lens being moulded from a material which is translucent to infra-red light.
2. A PIR sensor device according to Claim 1, wherein the lens is of generally hemi-spherical shape and extends forwardly from an otherwise flat front face of the housing, the internal surface of the lens being formed with facets.
3. A PIR sensor device according to Claim 1 or Claim 2, wherein said housing further contains a printed circuit board with said electronic switching components.
4. A PIR sensor device according to any preceding claim, wherein, behind the PIR sensor and the switching components, any residual space within the housing is substantially filled with a sealing material.
5. A PIR sensor device according to Clairn 1, wherein a printed circuit board is fixed within said housing and carries the PIR sensor on one face thereof behind the lens.
6. A PIR sensor device according to any preceding claim, wherein the external surface of the housing, other than the lens, is textured to render the internal components substantially invisible from the outside of the housing.
7. A PIR sensor device according to any preceding claim, wherein the closure for the open back of the housing is applied by ultrasonic welding, and wherein a number of wires extend through the housing wall for connection to, for example, a lighting appliance.
8. A PIR sensor device according to any preceding claim, when positioned within a lighting appliance with the lens exposed by or projecting through an aperture in the appliance the reminder of the device being concealed therewithin.
9. A PIR sensor device substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929215757A GB9215757D0 (en) | 1992-07-24 | 1992-07-24 | A pir sensor device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9314967D0 GB9314967D0 (en) | 1993-09-01 |
| GB2269011A true GB2269011A (en) | 1994-01-26 |
| GB2269011B GB2269011B (en) | 1996-05-01 |
Family
ID=10719236
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB929215757A Pending GB9215757D0 (en) | 1992-07-24 | 1992-07-24 | A pir sensor device |
| GB9314967A Expired - Lifetime GB2269011B (en) | 1992-07-24 | 1993-07-20 | A pir sensor device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB929215757A Pending GB9215757D0 (en) | 1992-07-24 | 1992-07-24 | A pir sensor device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0580395B1 (en) |
| AT (1) | ATE176961T1 (en) |
| DE (1) | DE69323577T2 (en) |
| GB (2) | GB9215757D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2345130A (en) * | 1998-12-22 | 2000-06-28 | Pyronix Ltd | Intruder sensor housing |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729019A (en) * | 1995-12-29 | 1998-03-17 | Honeywell Inc. | Split field-of-view uncooled infrared sensor |
| US9927301B2 (en) * | 2015-10-26 | 2018-03-27 | Bosch Security Systems, Inc. | Detector lens |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB955595A (en) * | 1960-07-15 | 1964-04-15 | Gen Electric Co Ltd | Improvements in or relating to devices for converting solar energy into electric energy |
| GB1397158A (en) * | 1972-04-24 | 1975-06-11 | Pak Construction Ab | Detector |
| WO1984003774A1 (en) * | 1983-03-23 | 1984-09-27 | Morander Karl Erik | Photodetector system to determine, respectively measure the position of one or a plurality of light sources |
| GB2221984A (en) * | 1988-05-11 | 1990-02-21 | Graham Wild | Optical detector |
| US5022725A (en) * | 1988-10-21 | 1991-06-11 | Matsushita Electric Industrial Co., Ltd. | Optical sensor |
| US5107120A (en) * | 1989-09-22 | 1992-04-21 | Pennwalt Corporation | Passive infrared detector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2012045B (en) * | 1977-12-22 | 1982-07-21 | Carbocraft Ltd | Infrared surveillance systems |
| IE821530L (en) * | 1982-06-25 | 1983-12-25 | John Anthony Bloice | Infra-red intrusion detector system |
| US5055685A (en) * | 1989-12-01 | 1991-10-08 | Optex Co., Ltd. | Infrared detecting apparatus |
| US5015994A (en) * | 1989-12-28 | 1991-05-14 | Grh Electronics | Security light controlled by motion detector |
| DE69101002T2 (en) * | 1990-10-29 | 1994-05-05 | Teknox Srl | Infrared presence detector. |
-
1992
- 1992-07-24 GB GB929215757A patent/GB9215757D0/en active Pending
-
1993
- 1993-07-20 EP EP93305679A patent/EP0580395B1/en not_active Expired - Lifetime
- 1993-07-20 DE DE69323577T patent/DE69323577T2/en not_active Expired - Fee Related
- 1993-07-20 GB GB9314967A patent/GB2269011B/en not_active Expired - Lifetime
- 1993-07-20 AT AT93305679T patent/ATE176961T1/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB955595A (en) * | 1960-07-15 | 1964-04-15 | Gen Electric Co Ltd | Improvements in or relating to devices for converting solar energy into electric energy |
| GB1397158A (en) * | 1972-04-24 | 1975-06-11 | Pak Construction Ab | Detector |
| WO1984003774A1 (en) * | 1983-03-23 | 1984-09-27 | Morander Karl Erik | Photodetector system to determine, respectively measure the position of one or a plurality of light sources |
| GB2221984A (en) * | 1988-05-11 | 1990-02-21 | Graham Wild | Optical detector |
| US5022725A (en) * | 1988-10-21 | 1991-06-11 | Matsushita Electric Industrial Co., Ltd. | Optical sensor |
| US5107120A (en) * | 1989-09-22 | 1992-04-21 | Pennwalt Corporation | Passive infrared detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2345130A (en) * | 1998-12-22 | 2000-06-28 | Pyronix Ltd | Intruder sensor housing |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0580395A3 (en) | 1994-05-04 |
| GB9314967D0 (en) | 1993-09-01 |
| GB9215757D0 (en) | 1992-09-09 |
| EP0580395A2 (en) | 1994-01-26 |
| EP0580395B1 (en) | 1999-02-24 |
| DE69323577D1 (en) | 1999-04-01 |
| ATE176961T1 (en) | 1999-03-15 |
| GB2269011B (en) | 1996-05-01 |
| DE69323577T2 (en) | 1999-10-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20090917 AND 20090923 |
|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20100415 AND 20100421 |
|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20111117 AND 20111123 |
|
| PE20 | Patent expired after termination of 20 years |
Expiry date: 20130719 |