temperature sensor


A temperature sensor is an electronic device that measures the temperature of its environment and converts the input data into electronic data to record, monitor, or signal temperature changes. There are many different types of temperature sensors

There are four types of temperature sensors that are most commonly used in modern-day electronics: thermocouples, RTDs (resistance temperature detectors), thermistors, and semiconductor based integrated circuits (IC)

A CMOS smart temperature sensor with a 3σ inaccuracy of±0.1 C from-55 C to 125 C
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A smart temperature sensor in 0.7 m CMOS is ac-curate to within 0.1 C (3) over the full military temperature rangeof 55 Cto125 C. ThesensorusessubstratePNPtransistors to measure temperature . Errors resulting from nonidealities in the readout circuitry are reduced The 12 best NIR water transition line pairs for temperature measurements with a single DFB laser in flames are determined by systematic analysis of the HITRAN simulation of the water spectra in the 1 2 μm spectral region. A specific line pair near 1.4 μm was targeted for non

XBee wireless sensor networks for temperature monitoring
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This paper presents an embedded wireless sensor network (WSN) prototype system for temperature monitoring in a building. This network will be used for management of air conditioning systems at SIIT. The ultimate goal is to help saving the energy cost and

All-Digital Time-Domain Smart Temperature Sensor With an Inter-Batch Inaccuracy of 0.7° C + 0.6° C After One-Point Calibration
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To get rid of the heavy burden of aspect ratio tuning, bias adjustment and porting problem among processes in full-custom or mixed-mode design, a fully digital smart temperature sensor realizable with 140 field programmable gate array (FPGA) logic elements was

Implementing ohmmeter/ temperature sensor
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This application note describes a method for implementing an ohmmeter or resistance type temperature sensor using the PIC16C5X series of microcontrollers. The ohmmeter requires only two external components and is software and hardware configurable for resistance

TiO2Fibers Supported β-FeOOH Nanostructures as Efficient Visible Light Photocatalyst and Room Temperature Sensor
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Hierarchical heterostructures of beta-iron oxyhydroxide (β-FeOOH) nanostructures on electrospun TiO 2 nanofibers were synthesized by a facile hydrothermal method. This synthesis method proves to be versatile to tailoring of β-FeOOH structural design that cuts

Human body respiration measurement using digital temperature sensor with I2C interface
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Vital signs are measurements of the bodys most basic functions. The four main vital signs routinely monitored by medical professionals and healthcare providers include the following body temperature , pulse rate, respiration rate (rate of breathing), blood pressure (Blood

A wireless inductive-capacitive (LC) sensor for rotating component temperature monitoring
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Temperature monitoring is critical in almost every type of machinery and application, especially in rotating components such as jet turbines, engines, and power plants, etc. These components involve harsh environments and where the physical connections forThe influence of the wavelength dispersion on the temperature accuracy of the Raman distributed temperature sensor system (RDTS) is analyzed in detail, and a simple correction algorithm is proposed to compensate the fiber position error caused by the wavelength

How to select and use the right temperature sensor
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Having been involved in the design, manufacture and application of temperature sensors for twenty years, I have done a number of training seminars on temperature sensors. After presenting long winded explanations as to how RTDs (Resistance Temperature Detectors)

A novel built-in CMOS temperature sensor for VLSI circuits
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A novel temperature sensor is developed and presented especially for the purpose of on- line thermal moni toring of VLSI chips. This sensor requires very small silicon area and low power consumption, and the simulation results show that its accuracy is in the order of 0. 8

Temperature sensor using ferrofluid thin film
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A brand new design of temperature sensor using ferrofluid thin film is proposed in this paper. When magnetic field parallel to the plane of the ferrofluid thin film is applied, magnetic chains form in the same direction of the magnetic field, which results in the suppressing of Through analyzing theoretically the temperature effect of the optical-fiber Raman backscattering, a distributed temperature sensor is designed based on the single-mode fiber. Demodulation methods of temperature transduction are compared, and then the

A precise temperature sensor for 600-1600 C
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A simple, sensitive and reliable thermopile for the temperature range 600-1600 C is described. There is an increasing demand for high-quality crystals and materials that require more and more stringent control of the temperatures necessary in the fabrication process. In

Ring oscillator based CMOS temperature sensor design
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This paper presents the ring oscillator based temperature sensor . The method is highly area efficient, simple and easy for IC implementation as compared to traditional temperature sensors. The proposed temperature sensor was fabricated using 0.35 μm technology, which

A novel Fabry-Perot fiber optic temperature sensor for early age hydration heat study in Portland cement concrete
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Concrete is known as a heterogeneous product which is composed of complex chemical composition and reaction. The development of concrete thermal effect during early age is critical on its future structural health and long term durability. When cement is mixed with

A novel method for high temperature measurements using fiber Bragg grating sensor
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This paper reports the simulation, design and experimental analysis of a fiber Bragg grating (FBG) temperature sensor , making use of chemical composition grating (CCG), which ranges from room temperature to over 900 C. The interrogation system of the sensor

A high- temperature , high-voltage SOI gate driver IC with high output current and on-chip low-power temperature sensor
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High- temperature power conversion modules (DC-DC converters, inverters, etc.) have enormous potential in extreme environment applications, including automotive, aerospace, geothermal, nuclear, and well logging. Power-to-volume and power-to-weight ratios of these In the present work, two-dimensional (2D) hexagonal photonic crystal ring resonator (PCRR) structure is designed for both pressure and temperature sensing based on effective refractive index modulation of silicon. The nanosensor is designed to monitor the pressure

Remote temperature monitoring using LM35 sensor and intimate android user via C2DM service
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This paper presents an embedded wireless sensor network prototype for remote room temperature monitoring. This network will be used for management of fire rescue operations. It will give the Android registered user freedom to continuously monitor the remote room

Qualifying fibre optic temperature sensor using speckle metrology
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ABSTRACT A distributed temperature sensing approach based on laser speckles in multimode fibres is characterised. The speckle patterns are intensity distributions of different modes formed by the interference of the modes from a coherent source. The system designThe fiber optic distributed temperature sensor (DTS) is one of the most outstanding means to measure temperature distribution along an optical fiber. In this paper, we propose a novel calibration technique to measure the temperature highly accurately over a wide range of

Wireless temperature sensor using Bluetooth
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Convenient and reliable temperature monitoring systems are increasingly demanded in vehicle refrigerators. However, difficulties exist in wiring between temperature recorders and sensors in vehicles such as trailer-tractor. To solve this problem, this paper provides a novel

Reduced graphene oxide as ultra-fast temperature sensor
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We demonstrate the excellent temperature sensing property of a chemically synthesized reduced graphene oxide (rGO). It is found that with increase in temperature from 80 to 375K, the resistivity of reduced graphene oxide monotonically decreases. The ultra-fast

Wearable wireless temperature sensor nodes appressed to base of a calfs tail
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Respiratory diseases in calves are the primary cause of infantile death since calves have low resistance to viruses or bacteria and are vulnerable to respiratory diseases such as pneumonia. An effective method used successfully for the early detection of respiratory A monolithic multi- sensor for small unmanned aerial vehicles is presented in the paper; it consists of a three-axis piezoresistive accelerometer, a piezoresistive absolute pressure sensor and a silicon thermistor temperature sensor . The accelerometer is designed with four

Dynamic calibration of the cutting temperature sensor of NiCr/NiSi thin-film thermocouple
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In high-speed cutting, natural thermocouple, artificial thermocouple and infrared radiation temperature measurement are usually adopted for measuring cutting temperature , but these methods have difficulty in measuring transient temperature accurately of cutting area on

Simultaneous strain and temperature sensor using superimposed tilted Bragg gratings
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We report the use of superimposed tilted Bragg gratings for the simultaneous measurement of longitudinal strain and temperature . The gratings are inscribed using only one phase mask tilted in the plane perpendicular to the laser beam. They are overlaid so to behave as

Improved probe geometry for fluorescence-based fibre-optic temperature sensor
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A fluorescent fibre probe with high collection efficiency for fluorescence-lifetime measurements is presented. A numerical model for calculating the collection efficiency for different probe designs has been employed. The position and number of fibres, crystal Abstract Er doped SrBi 8 Ti 7 O 27 (SBT) ferroelectric ceramics were prepared by a solid- state reaction technique. By Er doping, the intensive green upconversion emissions were recorded under 980 nm diode laser excitation with 20 mW. The fluorescence spectrum was

A novel high-resolution resonant thermometer used for temperature compensation of a cofabricated pressure sensor
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Temperature compensation of a capacitive pressure sensor with a cofabricated, high- resolution, resonant thermometer is presented in this paper. The epi-seal encapsulated resonant thermometer yields a resolution of 10 mK due to the ultra-clean operating

Development and application of Ba0. 5Sr0. 5TiO3 (BST) thin film as temperature sensor for satellite technology
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Abstract Barium Strontium Titanate (BST) thin film has been manufactured by using chemical solution deposition (CSD) method with annealing temperature of 850 0C and variations of the holding times of 1 22 and 29 hours. BST thin film was pyroelectric material which In this paper, a model of photonic crystal temperature sensor based on crystal microcavity in a straight photonic crystal waveguide is proposed. The transmission characteristics of light in the sensor under different temperatures are simulated by using finite-difference time-domain This paper presents an integrated multifunctional sensor based on MEMS technology, which can be used or embedded in mobile devices for environmental monitoring. An absolute pressure sensor , a temperature sensor and a humidity sensor are integrated in one silicon A high temperature sensor based on the multi-parameter temperature dependent characteristic of photoluminescence (PL) of quantum dot (QD) thin film is demonstrated by depositing the CdSe/ZnS core/shell QDs on the SiO 2 glass substrates. The variations of the

Planar optical waveguide temperature sensor based on etched Bragg gratings considering nonlinear thermo-optic effect
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This paper demonstrates the development of optical temperature sensor based on the etched silica-based planar waveguide Bragg grating. Topics include design and fabrication of the etched planar waveguide Bragg grating optical temperature sensor . The typical

In-situ monitoring of temperature and voltage in lithium-ion battery by embedded flexible micro temperature and voltage sensor
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Lithium-ion batteries are utilized in mobile phones, personal digital assistants (PDA), 3C products and electric vehicles. Batteries must be rapidly chargeable. They discharge in devices. In both processes, the temperature in the battery increases rapidly. Safety is very A frequency-to-digital converter based small size smart temperature sensor for portable applications is proposed. To reduce its size and power consumption, the proposed temperature sensor adopted frequency-to-digital converter without relying on a band-gap

Optical temperature sensor based on whispering gallery modes
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We realised a novel optical temperature sensor with polymer microspheres as sensing element. Whispering gallery modes are excited by total internal reflection. Dependent on the temperature the changes of refractive index and diameter cause a shift in resonance

Variable temperature cryostat for cryogenic temperature sensor calibration
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The selection of the temperature sensor in the cryogenic system depends on the temperature range, shape and accuracy. The accuracy of the temperature sensor is essential to improve the reliability of experiment. We have developed the variable