Danger detector with a non-contact heat radiation sensor for establishing an ambient temperature
First Claim
1. A danger detector embodied as a point-type detector, the danger detector comprising:
- an alarm housing with an alarm cover having a light-impermeable opaque area configured to receive environmental heat radiation via an open air ambient environment outside of the alarm cover and emit heat radiation from an inner side of the light-impermeable opaque area of the alarm cover as a function of heating of the alarm cover by the environmental heat radiation,a non-contact heat radiation sensor disposed in the alarm housing and aligned optically with the inner side of the light-impermeable opaque area of the alarm cover, and configured to generate a sensor signal corresponding to heat radiation in the infrared range emitted by the inner side of the light-impermeable opaque area as a function of the heating of the alarm cover by the environmental heat radiation of the ambient environment outside the alarm cover,a processing unit, andcomputer instructions stored in non-transitory memory and executable by the processing unit to;
determine an ambient temperature value for an ambient temperature in the open air environment outside the alarm housing of the danger detector based on the sensor signal generated by the non-contact heat radiation sensor, andbased on the determined ambient temperature value, visibly or audibly output at least one of;
the determined ambient temperature value, oran alarm message in response to the determined ambient temperature value exceeding a predetermined temperature comparison value.
3 Assignments
0 Petitions
Accused Products
Abstract
A danger detector configured as a point detector includes an alarm housing with an alarm cover, a non-contact heat radiation sensor that is sensitive to heat radiation in the infrared range, and a treatment unit configured to determine and emit a temperature value derived from the detected heat radiation for the ambient temperature in the surroundings of the danger detector and/or an alarm, in the event that the currently determined temperature value exceeds a predetermined temperature comparison value. The heat radiation sensor is arranged in the alarm housing and is configured to optically detect the ambient temperature on the inner side of the alarm cover. The heat radiation sensor may be a thermopile designed as an SMD component.
12 Citations
19 Claims
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1. A danger detector embodied as a point-type detector, the danger detector comprising:
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an alarm housing with an alarm cover having a light-impermeable opaque area configured to receive environmental heat radiation via an open air ambient environment outside of the alarm cover and emit heat radiation from an inner side of the light-impermeable opaque area of the alarm cover as a function of heating of the alarm cover by the environmental heat radiation, a non-contact heat radiation sensor disposed in the alarm housing and aligned optically with the inner side of the light-impermeable opaque area of the alarm cover, and configured to generate a sensor signal corresponding to heat radiation in the infrared range emitted by the inner side of the light-impermeable opaque area as a function of the heating of the alarm cover by the environmental heat radiation of the ambient environment outside the alarm cover, a processing unit, and computer instructions stored in non-transitory memory and executable by the processing unit to; determine an ambient temperature value for an ambient temperature in the open air environment outside the alarm housing of the danger detector based on the sensor signal generated by the non-contact heat radiation sensor, and based on the determined ambient temperature value, visibly or audibly output at least one of; the determined ambient temperature value, or an alarm message in response to the determined ambient temperature value exceeding a predetermined temperature comparison value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for determining a temperature value in an open air environment outside an alarm cover of a danger detector embodied as a point-type detector, the method comprising:
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receiving, at a light-impermeable opaque area of the alarm cover, environmental heat radiation of an ambient environment outside the alarm cover, emitting heat radiation by an inner side of the light-impermeable opaque area of the alarm cover as a function of heating of the alarm cover by the environmental heat radiation, generating, by a non-contact heat radiation sensor, a sensor signal indicating a detected heat radiation emitted by the inner side of the light-impermeable opaque area of the alarm cover, determining the temperature value for the environment of the danger detector based at least on; (a) the generated sensor signal, and (b) a degree of emission for the heat radiation based on at least one of the material of the of the light-impermeable opaque area of the alarm cover or a surface property of the inner side of the light-impermeable opaque area of the alarm cover, and visibly or audibly outputting at least one of the determined temperature value or a signal indicative of the determined temperature value. - View Dependent Claims (16)
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17. A method for determining an ambient temperature value for an open air environment outside an alarm cover of a danger detector embodied as a point-type detector, the method comprising:
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emitting heat radiation by an opaque inner side of an alarm cover as a function of heating of the alarm cover by environmental heat radiation of an ambient environment outside of the alarm cover, generating, by each of two heat radiation sensors, a respective sensor signal indicating a detected heat radiation emitted by the opaque inner side of the alarm cover as a function of the heating of the alarm cover by the environmental heat radiation of the ambient environment outside of the alarm cover, wherein the two heat radiation sensors have different spectral heat radiation sensitivities, and determining the ambient temperature value for the environment of the danger detector via a ratio pyrometry of the two sensor signals, and visibly or audibly outputting at least one of the determined ambient temperature value or a signal indicative of the determined ambient temperature value. - View Dependent Claims (18, 19)
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Specification