EP0187180B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Sensor for monitoring systems
Assignee: TELETRONIC HARTMUTH JENSEN
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Filing: 1985-01-10
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Granted: 1989-08-02
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Expires: 2005-01-10
Abstract
Abstract 1. A sensor for monitoring systems with a casing containing a pyroelectric detector and which has at least one bore and an infrared-transmitting window, the detector being connected to evaluation electronics, wherein the sensor has a two-part, substantially air-impermeable modular casing, whereof one half is substantially completely filled with a plastic sealing compound, in which the detector is embedded in such a way that only the top surface containing the window projects from the sealing compound, an air duct passing from the bore to the cavity arranged in the facing casing half and on whose front surface are provided an infrared-transmitting, membrane-like, thin foil and an approximately diameter 0.3 mm hole.
Inventors
- 👤 Helmut Dipl.-Ing. Poppendieker
- 👤 Hartmuth Jensen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 07:44
CPC Classifications
G; G08; G08B; G08B29/00; G08B29/18; G08B29/20; G08B29/24; G08B13/00; G08B13/18; G08B13/189; G08B13/19; G08B13/191; G08B13/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A sensor for monitoring systems with a casing containing a pyroelectric detector and which has at least one bore and an infrared- transmitting window, the detector being connected to evaluation electronics, wherein the sensor has a two-part, substantially air-impermeable modular casing, whereof one half is substantially completely filled with a plastic sealing compound, in which the detector is embedded in such a way that only the top surface containing the window projects from the sealing compound, an air duct passing from the bore to the cavity arranged in the facing casing half and on whose front surface are provided an infrared-transmitting, membrane-like, thin foil and an approximately diameter 0.3 mm hole.
Claim 2
Dependent Claim
111 words
A sensor for monitoring systems with a casing containing a pyroelectric detector and which has at least one bore and an infrared- transmitting window, the detector being connected to evaluation electronics, wherein the sensor has a two-part, substantially air-impermeable modular casing, whereof one half is substantially completely filled with a plastic sealing compound, in which the detector is embedded in such a way that only the top surface containing the window projects from the sealing compound, an air duct passing from the bore to the cavity arranged in the facing casing half and on whose front surface are provided an infrared-transmitting, membrane-like, thin foil and an approximately diameter 0.3 mm hole.
Claim 3
Dependent Claim
15 words
A sensor according to claim 1, wherein the plastic sealing compound is of epoxy resin.
Claim 4
Dependent Claim
24 words
A sensor according to claim 2, wherein the air duct has a length of approximately 10 mm and a diameter of approximately 0.7 mm.
Claim 5
Dependent Claim
17 words
A sensor according to claims 1 to 3, wherein the thin foil is made from ifrared-transmitting plastic.
Claim 6
Dependent Claim
46 words
A sensor according to claims 1 to 4, wherein the sensor modular casing is surrounded by a monitoring system casing with a recess, in which is precisely fitted a front panel with a Fresnel lens and wherein the recess is positioned in front of the foil.
Claim 7
Dependent Claim
26 words
A sensor according to claims 1 to 5, wherein the two modular casing halves are bonded together by means of an adhesive tape for sealing purposes.
Claim 8
Dependent Claim
18 words
A sensor according to claims 1 to 6, wherein the evaluation electronics are fixed to a circuit board.
Claim 9
Dependent Claim
44 words
A sensor according to claims 1 and 7, wherein the power supplies and sensor signals are passed via wires from the modular casing and connected to the main board and then wherein the latter is positioned adjacent to one side of the module half.
Claim 10
Dependent Claim
34 words
A sensor according to claims 1 to 8, wherein a small plate which does not transmit infrared can be placed in the recess of the monitoring system casing in front of the Fresnel lens.
Claim 11
Dependent Claim
28 words
A sensor according to claims 1 to 9, wherein the bore is arranged laterally in the casing and the air duct runs approximately parallel to the foil axis.
References Cited (Backward Citations)
No citation records indexed.
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