Wall Mounted Battery,Wall-Mounted Lithium-Ion Battery,Residential Wall-Mount Battery,Wall Mounted Lithium Battery JIANGMEN RONDA LITHIUM BATTERY CO., LTD. , https://www.ronda-battery.com
Temperature is a physical quantity that reflects the degree of heat or cold in an object. It is one of the most frequently measured parameters in industrial settings. Accurate temperature measurement and control are crucial for maintaining product quality, enhancing production efficiency, conserving energy, ensuring safety, and driving economic growth. In recent years, with the advancement of automation and the increasing demand for eco-friendly, energy-efficient household appliances—such as cars and fire-fighting equipment—the use of microcontrollers has become widespread. This trend has significantly boosted the demand for various types of sensors. Among over 30 commonly used physical measurement sensors, temperature sensors are the most widely used, accounting for approximately 50% of the market.
Temperature sensors operate by detecting changes in certain properties of an object as the temperature varies. These properties include thermal expansion, resistance, capacitance, thermoelectric voltage, magnetic characteristics, frequency, optical properties, and thermal noise. Different types of temperature sensors are designed based on these principles to suit various applications.
In this paper, we explore several advanced temperature sensors and their application circuits developed by MOTOROLA. The design also minimizes the impact of load variations on signal amplification. The latter stage involves an inverting amplifier that boosts the weak output from the sensor to meet different signal transformation needs.
**Temperature Difference Measurement Circuit**
The actual circuit for measuring temperature difference is illustrated in Figure 7. Since the goal is to measure the temperature difference, two temperature sensors must be used in the circuit. Both sensors are first buffered using a non-inverting unity gain amplifier and then connected to the two input terminals of a differential amplifier. Based on the polarity and magnitude of the output voltage (Van), it can be determined which of the two sensors is at a higher temperature and the extent of the temperature difference. To ensure accurate measurements, the two sensors should have similar performance characteristics so that when exposed to the same temperature, their output voltage (Votr) can be adjusted to 0.000 V.
