Abstract: A failure judgment device for a thermostat 16 arranged in a circulation passage 13 of cooling water 12 in an engine 1 includes a water-temperature sensor 18 for detection of a temperature of cooling water 12 having passed through the engine 1, and a controller 19 which monitors rise in temperature of the cooling water 12 at cold startup by a detection signal 18a inputted from the water-temperature sensor 18 and which calculates a predicted water temperature in the engine 1 as from beginning of the startup to judge failure of the thermostat 16 when the predicted water temperature reaches a valve opening temperature of the thermostat 16 with the temperature of the cooling water 12 being not beyond a threshold value.

Abstract: The present invention, in one aspect, provides a method for calibrating thermal control elements in situ using a single compound calibrator. In some embodiments, the present invention uses a compound calibrator to calibrate thermal control elements on a microfluidic device. In non-limiting embodiment, the compound calibrator can be a droplet, plug, slug, segment or continuous flow of any appropriate solution that, when heated, yields a thermal response profile with a plurality of features (e.g., maxima, minima, inflection points, linear regions, etc.).

Abstract: A ventilator device (10) includes a display screen (50, 101) to display a plurality of ventilator functions/modes (or menus) and a plurality of parameters (or sub-menus) associated with at least one of said ventilator functions/modes. A control member, e.g., in the form of a multifunction finger-operable dial (55, 102) is provided to select from the plurality of ventilator functions/modes and/or parameters, the dial being manipulatable in a first manner (e.g., rotation) to scroll between said parameters, and being manipulatable in a second manner (e.g., touching, pressing and/or depressing) to select one of the ventilator functions/modes and/or parameters.

Abstract: A temperature characteristic correction device corrects a temperature characteristic of an electronic device. The temperature characteristic correction device calculates a peak correction characteristic approximating a peak waveform having a peak value in a second range included in a first range of the temperature characteristic using a first formula, and a correction characteristic approximating a waveform continuing in the first range of the temperature characteristic using a second formula. The temperature characteristic correction device calculates a total correction amount from the peak correction characteristic and the correction characteristic, and then corrects the temperature characteristic using the total correction amount.

Abstract: A method for determining a blackbody temperature of an electrical discharge may include providing a radiometer with a sensor aperture, positioning a viewing aperture sheet between the sensor aperture and the electrical discharge, and providing the viewing aperture sheet with a viewing aperture therethrough, determining an area of the viewing aperture, determining a distance of the sensor aperture from the viewing aperture, observing the electrical discharge with the sensor aperture through the viewing aperture to obtain radiometer data, and calculating the blackbody temperature based at least on the radiometer data, the area of the viewing aperture and the distance of the sensor aperture from the viewing aperture.

Abstract: A non-contact pyrometer and method for calibrating the same are provided. The pyrometer includes a radiation sensor configured to measure at least a portion of a radiance signal emitted from a target medium and output a voltage that is a function of an average of the absorbed radiance signal, and an optical window disposed proximate the radiation sensor and configured to control a wavelength range of the radiance signal that reaches the radiation sensor. The pyrometer may further include a reflective enclosure configured to receive the target medium therein, wherein the radiation sensor and the optical window are disposed within the reflective enclosure, an amplifier in communication with an output of the radiation sensor, and a data acquisition system in communication with an output of the amplifier.

Abstract: A camera system includes a camera and a camera housing structured to at least partially enclose the camera. The camera comprises an internal heat sink thermally coupled to electronics of the camera and a lens ring positioned around a lens of the camera. The camera housing comprises a thermal conductor. An interior portion of the thermal conductor makes contact with the lens ring when the camera is enclosed within the housing, and an exterior portion extends outside the housing. The thermal conductor is configured to transfer heat from the interior of the housing to the exterior to dissipate heat from the camera's electronics.

Abstract: In some embodiments, a method may be provided for calibrating integrated circuit temperature sensors. The method may include sensing a first temperature using a first temperature sensor and a second temperature using a second temperature sensor. The first temperature sensor may be calibrated and is external to a package of the integrated circuit. The second temperature sensor may be included in the integrated circuit. The method may include increasing a temperature of the integrated circuit. The method may include allowing the integrated circuit and the package to thermally equilibrate over a first period of time. The method may include sensing a first slope of a temperature decay by the first temperature sensor. The method may include sensing a second slope of a temperature decay by the second temperature sensor. The method may include calibrating the second temperature sensor responsive to a difference between the first and second temperatures and the first and second slopes.

Abstract: A method and a device for automatically detecting an incorrect measurement of a total temperature on an aircraft. The detection device comprises several monitoring units configured to monitor the variations of the measured total temperature, provided by a temperature probe, and current values of the Mach number and of the altitude of the aircraft over a predetermined monitoring period of time, and a detection unit configured to detect an incorrect measurement of the total temperature when said monitoring units simultaneously detect particular conditions relative to said variations.

Abstract: A method of calibrating a temperature sensor of a chemical microreactor envisages: determining an airflow along a path in such a way as to cause a thermal exchange between the airflow and a chemical microreactor, which is provided with an on-board temperature sensor and is set along the path; and detecting a temperature in the airflow downstream of the microreactor, in conditions of thermal equilibrium.

Abstract: A method of sensing superheat includes the steps of: (a) connecting a fluid inlet member of a superheat sensor to one of a plurality of fluid systems; (b) allowing fluid to flow from the fluid system to which the superheat sensor is connected to the superheat sensor; (c) sensing a temperature of the fluid in the fluid system with one of an internal temperature sensor mounted within a housing of the superheat sensor and an external temperature sensor mounted outside of the housing of the superheat sensor; and (d) calculating a superheat of the fluid in the fluid system.

Abstract: A body of a thermometer (1001), a first location to be measured (1002), a second location to be measured (1003) and a third installation location (1004) is established by the thermometer management system. Further, communication lines (1005) are connected to network units at each location to be measured. Network units relay the sensor output from a sensor part to the communication lines. A sensor part is fixed to an object to be measured and sends a sensor output in response to the temperature of the object to be measured. A network unit has a radio frequency identifier (RFID) reader and transmits to the thermometer body commands and the like stored in the memory of an RFID card in response to approach of the RFID card arranged corresponding to a location to be measured. The thermometer body receives the commands and the like and performs predetermined operations.

Abstract: A thermal sensor includes a comparator having a first and second input nodes. A reference voltage generator is electrically coupled with the first input node. The reference voltage generator is configured to provide a reference voltage that is substantially temperature-independent. A temperature sensing circuit is electrically coupled with the second input node. The temperature sensing circuit is configured to provide a temperature-dependent voltage. The temperature sensing circuit includes a current mirror. A first metal-oxide-semiconductor (MOS) transistor is electrically coupled between the current mirror and ground. A first resistor is electrically coupled with the current mirror. A second MOS transistor is electrically coupled with the first resistor in series. The second MOS transistor and the first resistor are electrically coupled with the first MOS transistor in a parallel fashion.

Abstract: A fault diagnosis device conducts a fault diagnosis in a temperature sensor. At starting an internal combustion engine, a thermal equilibrium condition may be established and temperature deviations of temperatures detected by at least two reference temperature sensors from each other may be equal to or less than a predetermined value, with the temperatures detected by the reference temperature sensors being greatly deviated from one detected by a temperature sensor being diagnosed. In this case, if the temperatures detected by the reference temperature sensors do not drop by a predetermined temperature or more from starting the engine until a predetermined time elapses, the fault diagnosis device determines that the temperature sensor being diagnosed is faulty.

Abstract: The invention relates to a temperature measurement method using a thermometric resistance-type temperature probe (1) comprising at least two electroconductive sensitive elements (3, 4) on the same substrate (2), wherein different parameters representative of the strength of the electric current circulating in one of said sensitive elements (3, 4) are measured, and a correction, according to said strength of the electric current circulating in said sensitive element (3, 4), is applied to a signal representative of a temperature measurement generated from the other one of said sensitive elements (3, 4), in order to correct an error created as a result of the self-heating by the Joule effect of said sensitive element (3, 4) affecting the other one of said sensitive elements (3, 4).

Abstract: A system and method for conducting heating, ventilation, and Air Conditioning Analytics is disclosed. The system uses one or more wireless pneumatic thermostats (WPT) and/or various other sensors in communication with a control device to maintain, troubleshoot, calibrate, optimize, or otherwise adjust an installed pneumatic HVAC system.

Abstract: A method for monitoring a fuel temperature sensor over a repeating cycle includes: estimating a first value of a fuel temperature at the beginning of the cycle with the aid of a value of at least one further temperature from the same cycle and at least one of a second value of the fuel temperature and a further temperature from at least one previous cycle; and checking whether the deviation of a temperature of the fuel temperature sensor lies within a first range around the first value of the fuel temperature.

Abstract: A circuit for sensing a physical quantity according to an embodiment of the present invention includes a first oscillator circuit configured to provide a first clock signal including a first frequency depending on the physical quantity, and a second oscillator circuit configured to provide a second clock signal comprising a second frequency depending on the physical quantity. The circuit also includes a frequency comparator circuit configured to provide a frequency signal indicative of the physical quantity, the frequency signal being based on the first and second frequencies, wherein the first and second oscillator circuits are configured to provide the first and second clock signals such that due to a change in the physical quantity one frequency of the first and second frequencies increases, while the other frequency of the first and second frequencies decreases.

Abstract: Apparatus and methods for verifying temperature measurements in an ultrasonic flow meter. In one embodiment, an ultrasonic flow metering system includes a passage for fluid flow, a temperature sensor, and an ultrasonic flow meter. The temperature sensor is disposed to measure temperature of fluid flowing in the passage. The ultrasonic flow meter includes a plurality of pairs of ultrasonic transducers and control electronics. Each pair of transducers is configured to form a chordal path across the passage between the transducers. The control electronics are coupled to the ultrasonic transducers. The control electronics are configured to measure speed of sound between each pair of transducers based on ultrasonic signals passing between the transducers of the pair. The control electronics are also configured to determine, based on the measured speeds of sound, whether a measured temperature value provided by the temperature sensor accurately represents temperature of the fluid flowing in the passage.

Abstract: In one or more implementations, a temperature measuring system is provided, including a temperature sensing probe having (a) a thermistor operatively connected to a first conductor and (b) a resistor operatively connected to a second conductor, and a temperature determination application stored in a memory of a computing device operatively connected to the temperature sensing probe.

Abstract: Provided is a temperature measurement apparatus using a negative temperature coefficient (NTC) thermistor. A temperature sensor includes the NTC thermistor and a variable resistor part. A resistance value of the variable resistor part varies between a default resistance value for measuring a temperature and a temporary resistance value for determining a disconnection. An abnormal operation determination unit determines whether the NTC thermistor is disconnected, based on an output voltage of the temperature sensor when the variable resistor part has the temporary resistance value.

Abstract: A temperature sensor having calibration function according to temperature, a method of operating the same, and a device including the same are provided. The temperature sensor includes a reference circuit configured to generate at least one temperature information signal that varies according to a temperature, and generate at least one reference signal that is substantially constant relative to the temperature; and a digital temperature generator configured to receive the at least one temperature information signal and the at least one reference signal generated by the reference circuit, and generate a digital temperature information signal indicative of the temperature based on the at least one temperature information signal and the at least one reference signal, wherein one of the reference circuit and the digital temperature generator is configured to receive a calibration signal and adjust the at least one reference signal based on the calibration signal.

Abstract: A method for calibrating a measuring device in a mobile terminal includes: during a first calibration period, measuring first and second values at the first and second temperature sensors, respectively; during a second calibration period, measuring energy consumption values of the mobile terminal; generating first maximum, first minimum, and first temperature values from the first measured values; generating second maximum, second minimum, and second temperature values from the second measured values; generating a third maximum value from the measured energy consumption values; and storing the first and second temperature values for the calibration if the difference between the first maximum and minimum values and the difference between the second maximum and minimum values are smaller than a threshold value, and the third maximum value is smaller than a further threshold value.

Abstract: Embodiments of the present invention generally relate to methods and apparatus for measuring, calibrating, and controlling substrate temperature during low temperature and high temperature processing.

Abstract: A method for monitoring at least two temperature sensors of a turbomachine that is aligned along a reference plane, the two temperature sensors being located in the same transverse plane of the turbomachine, the method including detecting the stoppage of the turbomachine; waiting for a period at least equal to a predetermined threshold period; measuring the temperature with each of the two temperature sensors; comparing the two temperatures measured.

Abstract: The invention is directed to a laser adjustment device, a laser adjustment system and a laser adjustment method for an infrared thermometer. The laser adjustment device of the present invention includes a first adjustment seat and a second adjustment seat. The first adjustment seat includes a base, a fixing portion, a first adjustment portion, a second adjustment portion, and a first pivot portion. The second adjustment seat includes a connecting portion, a receiving portion and a second pivot portion. The first adjustment seat is pivoted about the first pivoting portion via the first adjustment portion, a first elastic member, and a first adjustment member. The second adjustment seat is pivoted about the second pivot portion via the second adjustment portion, a second elastic member, and a second adjustment member.

Abstract: A method of forming a thermocouple (12), including: depositing a first material on a component (10) to form a first leg (14); depositing a second material through a mask (30) to form a pattern (50) on the component (10), the pattern (50) forming a plurality of discrete second leg junction ends (20) and a continuous patch (52) of the second material comprising indiscrete lead ends of the second legs (16), each second leg junction end (20) spanning from a respective junction (18) with the first leg (14) to the continuous patch (52); and laser-ablating the continuous patch (52) to form discrete lead ends (22) of the second legs (16), each lead end (22) electrically connected to a respective junction end (20), thereby forming discrete second legs (16).

Abstract: The embodiments described herein generally relate to methods of noise compensation for proper temperature detection in thermal processing chambers and devices for achieving the same. Methods can include determining noise produced by a lamp zone and extrapolating the noise from the detected photocurrent. Devices can include a processing chamber, a substrate support disposed in the processing chamber, the substrate support having a high thermal mass, a pyrometer below the substrate support and oriented to view radiation emitted by the substrate and a controller configured to subtract a time invariant noise component and a time variant noise component from the pyrometer signal.

Abstract: There is provided a system and method for automatically calibrating a temperature sensor. More specifically, there is provided a system including a temperature sensor that includes a first resistance configured to indicate a temperature of the temperature sensor and a second resistance, in series with the first resistor, wherein the second resistance is adjustable to calibrate the first resistance, and a calibration circuit, coupled to the temperature sensor and configured to automatically calibrate the first resistance.

Abstract: A distributed optical fiber sensor system is provided. In this system, backward-scattered light generated in a test optical fiber is filtered to separate the backward-scattered light into Raman scattered light and Brillouin scattered light. The separated Raman scattered light and Brillouin scattered light are each converted into digital data. A change in temperature with respect to the distance of the test optical fiber is measured from the digital data of the Raman scattered light. A change in temperature and a change in the degree of deformation with respect to the distance of the test optical fiber are measured from the digital data of the Brillouin scattered light. The change in temperature and the change in the degree of deformation with respect to the distance of the test optical fiber are separately output using the measured data.

Abstract: A temperature measuring device includes a reading unit configured to read a first temperature value from a first temperature sensor that measures a temperature of a heat generating component and a second temperature value from a second temperature sensor that measures an ambient temperature, a calculation unit configured to calculate a correction value from an elapsed time and the first and the second temperature values, and a correction unit configured to calculate an corrected ambient temperature by correcting the second temperature value using the correction value obtained by the calculation unit.

Abstract: A temperature sensor uses a semiconductor device that has a known voltage drop characteristic that is proportional to absolute temperature (PTAT). A controllable current source is coupled to the semiconductor device and is operable to sequentially inject a bias current having a value I(bias) and fixed ratio N of I(bias) into the semiconductor device. A delta sigma analog to digital converter (ADC) has an input coupled to the semiconductor device. The delta sigma ADC is configured to sample and integrate a sequence of voltages pairs produced across the semiconductor device by repeatedly injecting an ordered sequence of selected bias currents into the semiconductor device. The ordered sequence of selected bias currents comprises M repetitions of (N×I(bias); I(bias)) and one repetition of (M×I(bias); M×N×I(bias)).

Abstract: In one embodiment, a current sensing circuit corrects for the transient and steady state temperature measurement errors due to physical separation between a resistive sense element and a temperature sensor. The sense element has a temperature coefficient of resistance. The voltage across the sense element and a temperature signal from the temperature sensor are received by processing circuitry. The processing circuitry determines a power dissipated by the sense element, which may be instantaneous or average power, and determines an increased temperature of the sense element. The resistance of the sense element is changed by the increased temperature, and this derived resistance Rs is used to calculate the current through the sense element using the equation I=V/R or other related equation. The process is iterative to continuously improve accuracy and update the current.

Abstract: The present invention provides a steel plate quality assurance system and facilities thereof, wherein the steel plate quality assurance system measures, with a steel plate manufacturing line including a finishing mill of a steel plate manufacturing line, and accelerated cooling equipment disposed on the downstream side of the finishing mill in the advancing direction of the steel plate manufacturing line, temperature of at least the whole area of the upper surface of a steel plate, or the whole area of the lower surface of a steel plate to perform quality assurance, and includes temperature measurement means; temperature analysis means; and mechanical property determining means.

Abstract: Abnormality of a temperature sensor is detected by: calculating the amount of heat generated in a predetermined time period from an object of sensing temperature by the temperature sensor; calculating the amount of temperature change of the object of sensing temperature in the predetermined time period; calculating a coordinate value in a coordinate system represented by having the heat amount information calculated by the heat amount calculation step, on a coordinate axis, and having information on the amount of temperature change of the temperature sensor, calculated by the temperature change calculation step, on another coordinate axis; and detecting abnormality of the temperature sensor in the case where the coordinate value calculated by the coordinate value calculation step is included in a predetermined abnormality detection judgment area in the coordinate system continuously for a certain time.

Abstract: A multi-die sensor system comprises a package and one or more transducer dies mounted in the package. Each transducer die includes one or more transducers, a temperature control element, and temperature sensor. The temperature control element changes the temperature of at least a portion of the transducer during operation of the temperature control element. A temperature sensor senses the temperature of at least the portion of the transducer. An output circuitry die mounted in the package receives transducer signals and a sensed temperature signal from the temperature sensor.

Abstract: The invention relates to a method for monitoring a sensor unit (20) that is arranged in the exhaust gas region of an internal combustion engine (10). According to the invention, a sensor temperature (31, 32) is directly or indirectly determined by the sensor unit (20), and is compared to an exhaust temperature (33) that is determined by a further sensor unit and/or to model variables and/or to defined threshold values, whereby a dismounting and/or an inappropriate mounting of the sensor unit is indicated.

Abstract: A battery pack thermistor test method includes charging a battery pack, monitoring a rise in average temperature reported by at least one thermistor on the battery pack over a predetermined time period, preparing at least one thermistor slope by calculating a least square fit of time vs. temperature for the at least one thermistor and comparing the at least one thermistor slope to process-defined thermistor slope limits.

Abstract: A heat flux sensor equipped measurement wafer includes a substrate, a cover thermally coupled to a portion of the substrate, a sensor cavity formed between the substrate and the cover, a thermal barrier disposed within at least a portion of the sensor cavity, a bottom temperature sensor thermally coupled to the substrate and insulated from the cover by a portion of the thermal barrier and a top temperature sensor thermally coupled to the cover and insulated from the substrate by an additional portion of the thermal barrier, wherein a temperature difference between the bottom temperature sensor and the top temperature sensor is related to a heat flux passing through the substrate and cover proximate to the sensor cavity.

Abstract: An apparatus for diagnosing a temperature detection unit, mounted in a vehicle having a power conversion circuit including a switching element, a control unit configured to operate the switching element to control a torque of a main rotating machine electrically connected to the power conversion circuit to a demanded torque. The temperature detection unit is configured to detect a temperature of the switching element. In the apparatus, a current supply increasing unit is configured to operate the switching element to increase a current supply to the switching element. A permission unit permits the current supply increasing unit to increase the current supply only when a braking torque is being applied to the vehicle. A diagnostic unit determines that an abnormality is present in the temperature detection unit when it is determined that the detection temperature of the temperature detection unit is out of an acceptable range.

Abstract: A heat sensor has the ability to correct for errors introduced during temperature changes of the hot junction of the thermopile for the heat sensor. For example, the effect of temperature changes at the hot junction of the heat sensor relative to the cold junction is mathematically modeled such that the effect on the temperature determination can be corrected given certain information relating to the thermopile, its electrical output, and the temperature history and current temperature of the cold junction. By accounting for these factors, a processing device can modify the temperature determination output for the heat sensor while correcting for error introduced by temperature changes at the hot junction as determined by the mathematical model.

Abstract: An image forming system and methods are disclosed. The methods include detecting an ambient temperature of an image forming system by a first thermal sense resistor disposed in a first printhead to obtain a first detected ambient temperature, detecting the ambient temperature of the image forming system by a second thermal sense resistor disposed in a second printhead to obtain a second detected ambient temperature, and determining a temperature difference between the first detected ambient temperature and the second detected ambient temperature of the image forming system by a temperature variation module.

Abstract: A system and method for providing greatly improved linear heat detection using fiber optic distributed temperature systems (DTS). The invention makes use of correction algorithms based on proportional-integral-derivative notions that anticipate exterior temperature increases based on the rate of measured temperature changes.

Abstract: An adaptive model training system and method for filtering asset operating data values acquired from a monitored asset for selectively choosing asset operating data values that meet at least one predefined criterion of good data quality while rejecting asset operating data values that fail to meet at least the one predefined criterion of good data quality; and recalibrating a previously trained or calibrated model having a learned scope of normal operation of the asset by utilizing the asset operating data values that meet at least the one predefined criterion of good data quality for adjusting the learned scope of normal operation of the asset for defining a recalibrated model having the adjusted learned scope of normal operation of the asset.

Abstract: A method of in-situ pyrometer calibration for a wafer treatment reactor such as a chemical vapor deposition reactor desirably includes the steps of positioning a calibrating pyrometer at a first calibrating position and heating the reactor until the reactor reaches a pyrometer calibration temperature. The method desirably further includes rotating the support element about the rotational axis, and while the support element is rotating about the rotational axis, obtaining first operating temperature measurements from a first operating pyrometer installed at a first operating position, and obtaining first calibrating temperature measurements from the calibration pyrometer. Both the calibrating pyrometer and the first operating pyrometer desirably are adapted to receive radiation from a first portion of a wafer support element at a first radial distance from a rotational axis of the wafer support element.

Abstract: In a portable electronic device, a temperature sensor is provided for sensing an ambient temperature of the portable electronic device. At least one other temperature sensor is provided for sensing a temperature inside the portable electronic device. The portable electronic device further comprises a set of components radiating heat in an active state in response to the consumption of electrical energy. A calibration module is adapted to conduct a calibration measurement during or in connection with an active state of at least a first component out of the set, and is adapted to determine a set of calibration parameters in response to the calibration measurement for adjusting the at least one sensed inside temperature. A compensator is provided for determining a compensated ambient temperature dependent on at least the sensed ambient temperature and the at least one adjusted sensed inside temperature.

Abstract: In a portable electronic device, a temperature sensor (1) is provided for sensing an ambient temperature (TR) of the portable electronic device. At least one other temperature sensor (3) is provided for sensing a temperature (TI) inside the portable electronic device. The portable electronic device further comprises a set of components (2) radiating heat in an active state in response to the consumption of electrical energy. A calibration module (5) is adapted to conduct a calibration measurement during or in response to an active state of at least a first component out of the set, and is adapted to determine a set of calibration parameters (c1) in response to the calibration measurement for adjusting the at least one sensed inside temperature (T1). A compensator (4) is provided for determining a compensated ambient temperature (TA) dependent on at least the sensed ambient temperature (TS) and the at least one adjusted sensed inside temperature (c1, T1).

Abstract: There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, an infrared detector, an emitted-infrared guide unit, first and second correcting laser beam source, first and second correcting laser beam guide units, first and second correcting laser detectors, first and second reflected laser beam guide units, and a control unit. The control unit controls the heating laser beam source and the first and second correcting laser beam sources, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a detection signal from the infrared detector and detection signals from the first and second correcting laser detectors, and determines a state of a measurement object based on the measured temperature rise characteristic.

Abstract: With a precondition that a cooling water temperature sensor 16 and an intercooler exit gas temperature sensor 18 have been determined normal, whether an EGR cooler efficiency calculated is within a normal range is determined. When within the normal range, whether there is divergence between a calculation value of an intake temperature to be detected by an intake manifold gas temperature sensor 19 and an actual detection value of the sensor 19 is determined. When not in the normal range, whether the calculation value is excessively low is determined; and, just like the above, whether there is divergence between the calculation value and the actuation detection value of the intake manifold gas temperature sensor 19 is determined. Based on the determinations categorized, whether the EGR cooler 14, EGR gas temperature sensor 17 and intake manifold gas temperature sensor 19 are normal is determined.

Abstract: There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, an infrared detector, an emitted-infrared guide unit, first and second correcting laser beam source, first and second correcting laser beam guide units, first and second correcting laser detectors, first and second reflected laser beam guide units, and a control unit. The control unit controls the heating laser beam source and the first and second correcting laser beam sources, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a detection signal from the infrared detector and detection signals from the first and second correcting laser detectors, and determines a state of a measurement object based on the measured temperature rise characteristic.