Methods and systems implement wireless, batteryless sensors which electronically store measurements to a data logger, the data logger being configurable to compute measurements based on the frequency measurements and electronically feed back to electronic controllers of systems and apparatuses which computationally monitor temperature. A data logger can be configured to write and transmit temperature measurements to any electronic controller having a data communication interface. The temperature sensors, in conjunction with the data logger, can provide any heating system, including chamber heating systems such as dry-heat and steam sterilizers, with article-localized temperature measurement feedback, to improve the accuracy of real-time temperature monitoring and/or control. Electronic controllers can be configured to output sufficient heat, then terminate a heat control cycle or a steam sterilization cycle, after having exposed to heat some number of articles to a desired extent as specified by a cumulative heating specification or a target temperature-over-time profile.

A system may include a fiber optic cable buried under a surface and a smart sensor module coupled to the fiber optic cable. A controller may be coupled to the smart sensor module. The smart sensor module includes a light source coupled to an end of the fiber optic cable and a detector coupled to the end of the fiber optic cable. The controller may manage a transmission of a pulse of light from the light source to launch the pulse of light into the fiber optic cable. The detector may receive a backscatter generated from the pulse of light scattered off fiber molecules of the fiber optic cable. The smart sensor module may determine a temperature of the fiber optic cable based on an intensity of the generated backscatter. The controller may send an alert when the determined temperature is outside a predetermined threshold range from a base temperature.

A system may include a fiber optic cable buried under a surface and a smart sensor module coupled to the fiber optic cable. A controller may be coupled to the smart sensor module. The smart sensor module includes a light source coupled to an end of the fiber optic cable and a detector coupled to the end of the fiber optic cable. The controller may manage a transmission of a pulse of light from the light source to launch the pulse of light into the fiber optic cable. The detector may receive a backscatter generated from the pulse of light scattered off fiber molecules of the fiber optic cable. The smart sensor module may determine a temperature of the fiber optic cable based on an intensity of the generated backscatter. The controller may send an alert when the determined temperature is outside a predetermined threshold range from a base temperature.

An optical measuring device having a polarization state generator to prepare a measuring light having a defined polarization state propagating along an analysis beam path, a receiving equipment arranged downstream of the polarization state generator to receive at least a first measuring cell and a second measuring cell, a polarization state analyzer arranged downstream of the receiving equipment, a detector for detecting an intensity of the measuring light, a stationary transmitting/receiving system to communicate with at least one of the first measuring cell and the second measuring cell and an evaluation and control unit for evaluating measuring signals from the detector and/or the polarization state analyzer and/or the polarization state generator taking into account information communicated between the stationary transmitting/receiving system and at least one of the two measuring cells.

An optical measuring device having a polarization state generator to prepare a measuring light having a defined polarization state propagating along an analysis beam path, a receiving equipment arranged downstream of the polarization state generator to receive at least a first measuring cell and a second measuring cell, a polarization state analyzer arranged downstream of the receiving equipment, a detector for detecting an intensity of the measuring light, a stationary transmitting/receiving system to communicate with at least one of the first measuring cell and the second measuring cell and an evaluation and control unit for evaluating measuring signals from the detector and/or the polarization state analyzer and/or the polarization state generator taking into account information communicated between the stationary transmitting/receiving system and at least one of the two measuring cells.