EP0270299A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A temperature sensing arrangement
Assignee: EMI Group Ltd
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Filing: 1987-11-25
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Granted: —
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Expires: 2007-11-25
Abstract
Abstract A temperature sensor is incorporated within a housing 1 having a silicon window 2 through which infra-red radiation can enter. Mounted on a support structure 3, is a semiconductor fabrication consisting of a reference junction 14 and a sensing junction 15, covered with a black absorber 16. Junction 14 is responsive to the temperature of the housing 1, whereas junction 15 is responsive to the temperature of the housing and also the temperature of a remote zone from which infra-red radiation can enter the housing 1 via window 2. A Peltier heater/cooler 18 controls the temperature of housing 1, which temperature is monitored by a sensor to provide a measure of that of the remote zone.
Inventors
- 👤 Colin Charles Oliver
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 06:38
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25B21/04; G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061; G01J5/064; G05; G05D; G05D23/00; G05D23/19; G05D23/27; G01J2005/062; G01J5/068
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
A temperature sensing arrangement including a temperature sensor device incorporating, in a housing, a reference sensor monitoring the temperature of the housing and a further sensor monitoring the temperature of a zone remote from the housing, control means for controlling the temperature of said housing, a circuit arrangement responsive to the sensors and effective to drive said control means in a sense tending to cause the temperature of said housing to approach that of said zone and means for monitoring the temperature of said housing, thereby to derive an indication of the temperature of the zone.
Claim 2
Dependent Claim
96 words
A temperature sensing arrangement including a temperature sensor device incorporating, in a housing, a reference sensor monitoring the temperature of the housing and a further sensor monitoring the temperature of a zone remote from the housing, control means for controlling the temperature of said housing, a circuit arrangement responsive to the sensors and effective to drive said control means in a sense tending to cause the temperature of said housing to approach that of said zone and means for monitoring the temperature of said housing, thereby to derive an indication of the temperature of the zone.
Claim 3
Dependent Claim
27 words
A temperature sensing arrangement according to Claim 1, comprising means to vary the drive operation of the circuit arrangement in accordance with the operation of the sensors.
Claim 4
Dependent Claim
45 words
A temperature sensing arrangement according to Claim 2, comprising means to monitor the output of the further sensor to determine if it exceeds a predetermined threshold and means to effect correction of the operation of the control means in response to the sensor monitor means.
Claim 5
Dependent Claim
25 words
A temperature sensing arrangement according to any one of the preceding Claims, comprising means to render the heating and cooling cycles approximately equal in duration.
Claim 6
Dependent Claim
37 words
A temperature sensing arrangement. according to Claim 4, comprising means to monitor the duration of the heating cycle and the cooling cycle, and means to vary the heating and/or cooling current in response to the cycle-monitor means.
Claim 7
Dependent Claim
19 words
A temperature sensing arrangement according to any one of the preceding Claims, wherein the housing comprises a silicon window.
Claim 8
Dependent Claim
21 words
A temperature sensing arrangement according to any one of the preceding Claims, wherein the control means comprises a Peltier heater/cooler device.
Claim 9
Dependent Claim
35 words
A temperature sensing arrangement according to any one of the preceding Claims, comprising optical and/or mechanical scanning means to allow the further sensor to effect monitoring of a plurality of zones remote from the housing.
References Cited (Backward Citations)
No citation records indexed.
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