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 micr

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 micr

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 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 method of measuring temperature based upon a system of equations applying Stefan-Boltzmann's law and using a measurement value for an object to be measured and an ambient temperature value (Ta) comprises: pre-calculating (200, 202) a first vector (LUT1) and a second vector (LUT2). The first vector (LUT1) is a series of values proportional to received power based upon respective temperature values and in respect of a predetermined generic range of temperatures. The second vector (LUT2) is a series of sensitivity characteristic factor values based upon expected measured temperature values and in respect of a predetermined range of expected object measured temperatures. The first vector (LUT1) and the second vector (LUT2) are used (206) to generate a temporary vector (LUT.sub.T) of a series of values limited to the ambient temperature value to solve the system of equations in respect of the measurement value for the object, thereby determining (208) a temperature (To) for the object from the measurement value.

A method of measuring temperature based upon a system of equations applying Stefan-Boltzmann's law and using a measurement value for an object to be measured and an ambient temperature value (Ta) comprises: pre-calculating (200, 202) a first vector (LUT1) and a second vector (LUT2). The first vector (LUT1) is a series of values proportional to received power based upon respective temperature values and in respect of a predetermined generic range of temperatures. The second vector (LUT2) is a series of sensitivity characteristic factor values based upon expected measured temperature values and in respect of a predetermined range of expected object measured temperatures. The first vector (LUT1) and the second vector (LUT2) are used (206) to generate a temporary vector (LUT.sub.T) of a series of values limited to the ambient temperature value to solve the system of equations in respect of the measurement value for the object, thereby determining (208) a temperature (To) for the object from the measurement value.

The present invention aims at providing a high-accuracy contactless measurement method for measuring the temperature of a metal thermoforming mold, which is capable of timely monitoring the metal temperature in multiple areas and also has threshold warning functionalities for delivering real-time notifications, in order to save the labor costs for long-term monitoring.

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.

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.