Embedded Supervisory Control and Output Reporting for the Oscillating Ultrasonic Temperature Sensors

Sensor data fusion for responsive high resolution ultrasonic temperature measurement using piezoelectric transducers

“…Fig. 1 [17] 22 kHz 50 Hz/K 0.10 m Implementation options for the electronic driver (including PSoC1*) were discussed [18] 25 kHz 25 Hz/K 0.10 m Comparison of ultrasonic thermometer architectures was conducted [19] 46 kHz 60 Hz/K 0.10 m Use of an UOTS for overnight measurements and observed hysteresis were reported [20] 25 kHz 20 Hz/K 0.10 m Simultaneous use of two UOTSes for the same process, modular design of the electronic driver, and thermal hysteresis for the recorded data were discussed [21] 27 kHz 30 Hz/K 0.10 m Differential temperature measurement using two UOTS was reported [22] 27 kHz 30 Hz/K 0.10 m UOTS and conventional temperature sensors were compared for a posteriori detection of the temperature extremum point *PSoC1 refers to the programmable systems on chip series 1 device, which is a highly versatile electronic part manufactured by Cypress Semiconductor.…”

Accurate heat loss evaluation of water-cooled electric motors using a differential ultrasonic calorimeter

“…In addition, most conventional sensors must achieve thermal equilibrium between the sensor and the surrounding environment. This equilibrium can take a few seconds after a temperature change before the sensor starts to produce correct readings [4,5]. In contrast, the response of ultrasonic thermometers is nearly instantaneous.…”

“…In contrast, the response of ultrasonic thermometers is nearly instantaneous. Finally, ultrasonic sensors were reported to achieve much higher resolution than conventional temperature sensors [5].…”

Experimental evaluation of ultrasonic oscillating temperature sensors (UOTS) under cyclically changing temperatures

“…They can also provide very high resolution, down to a hundredth of a centigrade [6,7]. We believe that oscillating ultrasonic temperature sensors (UOTS) are most suitable for measurements of process temperatures in pipes with diameters of around 100 mm [8].…”

“…An UOTS requires a pair of ultrasonic transducers and driving electronics with supervisory control and output reporting. Realization of the required functionality at low cost can potentially be achieved by using Programmable System on-Chip (PSoC) microcontrollers with built in analog peripherals, and temperature compensated crystal oscillators [8,9].…”