A temperature measurement correction method for a temperature detection device is provided. The temperature detection device includes a case and a focal plane array module disposed on an inner of the case. The temperature measurement correction method includes measuring an ambient temperature, a temperature of the case and a temperature of the focal plane array module, determining a plurality of radiometric regression coefficients according to the ambient temperature, the temperature of the case and the temperature of the focal plane array module, utilizing the temperature detection device to sense infrared energy radiated from an object to generate an electrical signal, and calculating an actual temperature value of the object according to the plurality of radiometric regression coefficients and the electrical signal.

A temperature sensor includes a first infrared measuring means, a second infrared measuring means, and a calculating unit. The first infrared measuring means measures infrared rays emitted from an object and outputs a first voltage. The second infrared measuring means measures infrared rays emitted from around the object and outputs a second voltage. The calculating unit calculates the output temperature of the object from the first voltage, calculates the ambient temperature of the object from the second voltage, and corrects the output temperature based on the ambient temperature to calculate the temperature of the object.

A temperature sensor includes a first infrared measuring means, a second infrared measuring means, and a calculating unit. The first infrared measuring means measures infrared rays emitted from an object and outputs a first voltage. The second infrared measuring means measures infrared rays emitted from around the object and outputs a second voltage. The calculating unit calculates the output temperature of the object from the first voltage, calculates the ambient temperature of the object from the second voltage, and corrects the output temperature based on the ambient temperature to calculate the temperature of the object.

An optical sensor device for object detection includes a light-emitting element configured to emit light to the object, a light-receiving element configured to sense reflected light from the object, a temperature sensor configured to provide a temperature signal in response to an ambient temperature, a temperature compensation unit coupled to the temperature sensor to read the temperature signal and perform a temperature compensation process to generate a compensated signal strength, and an analyzer coupled to the temperature compensation unit and configured to receive the compensated signal strength and generate a detection result. The temperature compensation process includes receiving a first signal strength when the light-emitting element is turned off, receiving a second signal strength when the light-emitting element is activated, obtaining a compensation factor according to the temperature signal, and generating the compensated signal strength based on the first signal strength, the second signal strength, and the compensation factor.

An optical sensor device for object detection includes a light-emitting element configured to emit light to the object, a light-receiving element configured to sense reflected light from the object, a temperature sensor configured to provide a temperature signal in response to an ambient temperature, a temperature compensation unit coupled to the temperature sensor to read the temperature signal and perform a temperature compensation process to generate a compensated signal strength, and an analyzer coupled to the temperature compensation unit and configured to receive the compensated signal strength and generate a detection result. The temperature compensation process includes receiving a first signal strength when the light-emitting element is turned off, receiving a second signal strength when the light-emitting element is activated, obtaining a compensation factor according to the temperature signal, and generating the compensated signal strength based on the first signal strength, the second signal strength, and the compensation factor.

The invention relates to a flame monitor (2, 2, 2, 2) for monitoring at least one sub-region (18) of a combustion chamber (1) for the presence of a flame (4), comprising: a flame sensor (16) for sensing a physical variable of a flame (4), in particular an intensity of electromagnetic radiation, and for generating an associated electrical sensor signal (26), a dual-channel analyser circuit (28, 28, 28), connected downstream from the flame sensor (16), for determining whether the sensor signal (26) generated by the flame sensor (16) corresponds to a flame (4) and for outputting a safety-oriented output signal (EXTS1) indicating the presence or absence of a flame (4), wherein the dual-channel analyser circuit (28, 28, 28) comprises: a first channel (28-1) configured to process the sensor signal (26), said channel comprising a first analogue-digital converter (32) in an analogue circuit (30), a first microcontroller (36) belonging to a digital diagnostic comparator unit (34, 34, 34, 34), for analysing a first signal obtained from the first analogue-digital converter (32), and a first relay (40) in a relay circuit (42, 42), which relay (40) is controlled by the first microcontroller (36), and a second channel (28-2) configured to process the sensor signal (26), said channel comprising a second analogue-digital converter (44) in the analogue circuit (30), a second microcontroller (46) belonging to the digital diagnostic comparator unit (34, 34, 34, 34), for analysing a second signal obtained from the second analogue-digital converter (44), and a second relay (50) in the relay circuit (42, 42), which relay (50) is controlled by the second microcontroller (46), wherein the diagnostic comparator unit (34, 34, 34, 34) is configured to compare a first result of analysis from the first microcontroller (36) and a second result of analysis from the second microcontroller (46) and to influence the output signal (EXTS1), depending on the result of the comparison, characterised in that the diagnostic comparator unit (34, 34, 34, 34) is configured to compare a signal (D1, D2; FB1, FB2) obtained from one of the two channels (28-1, 28-2) with an associated expected value, with the aid of both the first microcontroller (36) and the second microcontroller (46), and optionally to initiate a fail-operational mode of

The invention relates to a flame monitor (2, 2, 2, 2) for monitoring at least one sub-region (18) of a combustion chamber (1) for the presence of a flame (4), comprising: a flame sensor (16) for sensing a physical variable of a flame (4), in particular an intensity of electromagnetic radiation, and for generating an associated electrical sensor signal (26), a dual-channel analyser circuit (28, 28, 28), connected downstream from the flame sensor (16), for determining whether the sensor signal (26) generated by the flame sensor (16) corresponds to a flame (4) and for outputting a safety-oriented output signal (EXTS1) indicating the presence or absence of a flame (4), wherein the dual-channel analyser circuit (28, 28, 28) comprises: a first channel (28-1) configured to process the sensor signal (26), said channel comprising a first analogue-digital converter (32) in an analogue circuit (30), a first microcontroller (36) belonging to a digital diagnostic comparator unit (34, 34, 34, 34), for analysing a first signal obtained from the first analogue-digital converter (32), and a first relay (40) in a relay circuit (42, 42), which relay (40) is controlled by the first microcontroller (36), and a second channel (28-2) configured to process the sensor signal (26), said channel comprising a second analogue-digital converter (44) in the analogue circuit (30), a second microcontroller (46) belonging to the digital diagnostic comparator unit (34, 34, 34, 34), for analysing a second signal obtained from the second analogue-digital converter (44), and a second relay (50) in the relay circuit (42, 42), which relay (50) is controlled by the second microcontroller (46), wherein the diagnostic comparator unit (34, 34, 34, 34) is configured to compare a first result of analysis from the first microcontroller (36) and a second result of analysis from the second microcontroller (46) and to influence the output signal (EXTS1), depending on the result of the comparison, characterised in that the diagnostic comparator unit (34, 34, 34, 34) is configured to compare a signal (D1, D2; FB1, FB2) obtained from one of the two channels (28-1, 28-2) with an associated expected value, with the aid of both the first microcontroller (36) and the second microcontroller (46), and optionally to initiate a fail-operational mode of

A temperature abnormality detection device includes a plurality of infrared temperature sensors respectively capable of detecting temperature in a different detection area of an equipment, and a device body including a temperature abnormality determination unit that determines that the temperature in the detection area detected by each of the plurality of infrared temperature sensors is abnormal when the temperature in the detection area is higher than a reference temperature. The plurality of infrared temperature sensors is connected to each other by crossover wiring.

A temperature abnormality detection device includes a plurality of infrared temperature sensors respectively capable of detecting temperature in a different detection area of an equipment, and a device body including a temperature abnormality determination unit that determines that the temperature in the detection area detected by each of the plurality of infrared temperature sensors is abnormal when the temperature in the detection area is higher than a reference temperature. The plurality of infrared temperature sensors is connected to each other by crossover wiring.