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Electronic devices known as temperature sensors are used to measure and track temperature variations in various situations. Numerous applications, including industrial processes, consumer electronics, HVAC systems, medical equipment, automotive systems, and scientific research, make extensive use of them.
The principle of thermal expansion or changes in electrical characteristics with temperature is how temperature sensors operate. Several popular temperature sensor types are listed below:
Thermocouples: The temperature differential between a thermocouple’s junction and its reference junction causes a voltage to be generated by two different metals or metal alloys that make up a thermocouple. They have a wide temperature range, are easy to use, and are durable.
Resistance Temperature Detectors (RTDs): RTDs are based on the idea that some metals, including platinum, vary their electrical resistance as a function of temperature. High accuracy and stability are features of RTDs over a broad temperature range.
Thermistors: Thermistors are temperature sensors that make use of how temperature affects electrical resistance. They come in two varieties: positive temperature coefficient (PTC) and negative temperature coefficient (NTC) thermistors and are commonly composed of ceramic or polymer materials.
Infrared (IR) sensors detect thermal radiation generated by an object to determine temperature. They are frequently utilized in applications like thermal imaging cameras, home automation systems, and non-contact temperature measurements since they can be contactless.
Semiconductor-based Sensors: These sensors measure temperature using the properties of semiconductor materials. Diode temperature sensors and integrated circuit (IC) temperature sensors are two examples.
Bimetallic Strips: Two distinct metal strips are joined to form bimetallic temperature sensors. The strip bends as a result of the metals’ varying rates of expansion and contraction as a result of temperature changes. Temperature changes are measured using this bending.
Fiber Optic Sensors: Fiber optic temperature sensors work on the premise that temperature changes affect the amount of light that passes through an optical fiber. They have benefits including electromagnetic interference resistance and the capacity to monitor temperature in challenging conditions.
There are many other customized temperature sensors that are available for certain uses; these are just a few examples. The selection of a sensor is influenced by a number of variables, including the need for precision, the temperature range, the response time, the cost, and the environment in which it will be used.
The Yemen Temperature Sensors Market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
In order to create microelectronic sensor technologies capable of high-bandwidth, high-dynamic-range sensing at extremely high temperatures, DARPA has just launched the High Operational Temperature Sensors (HOTS) initiative.
The hostile environments that many defense and industrial systems that rely on sensors must contend with go beyond what can be handled by today’s high-performance physical sensors. Because of the variability in their thermal conditions, these systems must be designed and operated with lower performance and large margins.
Thermal limitations can impede the development of next-generation turbine engines or high-speed flight. For instance, in situations with extremely high temperatures (i.e., 800 °C or 1472 °F), high-performance pressure sensors are required to record complex flow dynamics.
