Method for determining the temperature of products transported on the conveyor belt of a cryogenic tunnel, comprising the following steps: —continuously measuring the surface temperature of products travelling on the conveyor belt; —measuring the thickness of a product at the point where the temperature measurement is taken; —performing the following evaluation: a. when the thickness of the product is within a certain range, then the temperature measured for said product is considered to be a reliable value; b. when the thickness of the product is outside the range, then the last temperature value of the measured product is considered to be a reliable value according to paragraph a) above; c. after a determined period of time during which the measured thickness is outside the range, it is concluded that there are no products on the conveyor belt and the temperature measurements are no longer taken into account.

Embodiments of the present disclosure provide a method for temperature detection. The method comprises obtaining a sensed temperature from a sensor, the sensor being in a mounted mode where the sensor is thermally radiated by a variable heat source and a fixed heat source; determining a temperature change rate of the sensor and at least one affecting factor that affects temperature sensing of the sensor; and determining a temperature of the variable heat source based on the sensed temperature, the temperature change rate, and the affecting factor. According to the method of the present disclosure, the temperature of the variable heat source such as an ambient temperature can be obtained or determined without a dedicated sensor and cables. With this method, the ambient temperature can be determined by a sensor for sensing a temperature of a heating element such as a battery, a control unit or the like. In this way, extra spaces and product designs for mounting a dedicated sensor for the ambient temperature are no longer needed, which reduces costs of the product. Furthermore, user experience can be improved without increasing costs.

A system that includes a detection device, an imaging device, and a control device is disclosed. The detection device may generate proximity data relating to a proximity of an undercarriage of a rail vehicle, and the imaging device may capture one or more thermal images of the undercarriage. The control device may receive a first thermal image and a second thermal image of the undercarriage. The first thermal image may be captured using a first integration time, and the second thermal image may be captured using a second integration time. The control device may determine composite thermal data associated with the undercarriage. The composite thermal data may include information mapping a first range of thermal data and mapping a second range of thermal data to one or more components of the undercarriage. The control device may cause an action to be performed in connection with the composite thermal data.

Methods of sensor readout and calibration and circuits for performing the methods are disclosed. In some embodiments, the methods include driving an active sensor at a voltage. In some embodiments, the methods include use of a calibration sensor, and the circuits include the calibration sensor. In some embodiments, the methods include use of a calibration current source and circuits include the calibration current source. In some embodiments, a sensor circuit includes a Sigma-Delta ADC. In some embodiments, a column of sensors is readout using first and second readout circuits during a same row time.

System and method that includes mapping temperature values from a two dimensional (2D) thermal image of a component to a three dimensional (3D) drawing model of the component to generate a 3D thermal model of the component; mapping temperature values from the 3D thermal model to a 2D virtual thermal image corresponding to a virtual thermal camera perspective; and predicting an attribute for the component by applying a prediction function to the 2D virtual thermal image.

Methods of sensor readout and calibration and circuits for performing the methods are disclosed. In some embodiments, the methods include driving an active sensor at a voltage. In some embodiments, the methods include use of a calibration sensor, and the circuits include the calibration sensor. In some embodiments, the methods include use of a calibration current source and circuits include the calibration current source. In some embodiments, a sensor circuit includes a Sigma-Delta ADC. In some embodiments, a column of sensors is readout using first and second readout circuits during a same row time.

A motion detector that can automatically adjust a dwell time used by the motion detector to prevent unnecessary transmissions as an activity level of an area increases or decreases. The motion detector determines the activity level in the area and if the activity level is increasing, the dwell time is reduced and vice-versa.

A system for detecting an hotspots can include: at least one infrared imaging sensor; and an imaging analysis computer operably coupled with the at least one infrared imaging sensor. The imaging analysis computer can be configured to control any infrared imaging sensor and acquire infrared images therefrom at any rate and in any duration. The imaging analysis computer can be configured to analyze the infrared images in order to detect temperatures and identify hotspots. The temperature and hotspot information can be used to control a cooling system that can spray water on and around hotspots for temperature control.

A radiometric camera having internal black body components and a method for calibrating a radiometric camera having internal black body components. A radiometric camera includes a detector, the detector further including a thermal detector configured to capture thermal images, wherein the thermal detector is pointed in a direction, wherein the radiometric camera is adapted to receive at least one black body element in front of the detector with respect to the direction of the thermal detector, the thermal detector having a plurality of portions including at least one first portion, wherein the at least one black body element affects radiation readings by the at least one first portion of a plurality of portions of the thermal detector when disposed in the radiometric camera.

A device for detecting infrared radiation emanating from a subject while not in physical contact with the subject. The device includes a body, an infrared sensor located in the body oriented to receive the infrared radiation and to generate at least one output that corresponds to the received infrared radiation, a rangefinder located in the body to generate at least one output that corresponds to a distance between the device and the subject, an ambient sensor to determine ambient temperature and to generate at least one output that corresponds to the ambient temperature, an analog to digital converter in communication with the infrared sensor, the rangefinder, and/or the ambient sensor, to receive the at least one output, a processor in communication with the analog to digital converter, the infrared sensor, the rangefinder, and/or the ambient sensor to process an output of the analog to digital converter, the at least one output of the infrared sensor, the at least one output of the rangefinder, and/or the at least one output of the ambient sensor, into a computed temperature of the subject. The processor adjusts the computed temperature based on the ambient temperature and the distance between the device and the subject corresponding to a maximum computed temperature of the subject. The device includes a display to show the temperature of the subject that is based at least in part on the computed temperature.