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8992080 Temperature detection device having a diode and an analog-digital converter  
A temperature detection device includes a diode and an analog-digital converter. An output voltage signal of the diode is applicable to an input of the analog-digital converter. The temperature...
8475038 Temperature sensor and method of compensating for change in output characteristic due to varying temperature  
Described is a method and apparatus for compensating for a change in an output characteristic of a temperature sensor due to varying temperature. The temperature sensor includes a temperature...
8303171 Cooling capacity measurement method for inverter device  
An inverter device is provided that can measure a decrease in cooling capacity caused by a finite service life of a cooling fan or clogging of a cooling fin, without being affected by an ambient...
8217708 Temperature sensor  
A temperature sensor performs more precise temperature measurement, even when manufacturing fluctuations are present in semiconductor elements forming a circuit for generating a...
8206031 PDM output temperature sensor  
To provide a PDM output temperature sensor, which is reduced in area and consumption power, provided is a PDM output temperature sensor which includes no reference voltage circuit, thereby having...
8197123 Thermistor circuit calibration  
Temperature detection circuitry is selectively coupled to a thermistor and one of two sources representing the impedance at respective ends of the expected range of temperature to which the...
8157442 Radiometric thermometer  
The radiometric thermometer includes a microwave sensor and electronic means for processing the electrical signal delivered by the sensor. The electronic means includes means for preamplifying the...
8092084 System and method for temperature measurement  
A method for precision thermal measurement and control, especially for bioreactors, as well as the correction of temperature sensitive probes such as pH and dissolved oxygen. Typical control...
7925459 Method and apparatus for determining an operating voltage for preventing photovoltaic cell reverse breakdown during power conversion  
A method and apparatus for determining an operating voltage lower bound for preventing photovoltaic (PV) cell reverse breakdown during power conversion. The method comprises determining a PV cell...
7901134 Semiconductor temperature sensor  
Provided is a semiconductor temperature sensor having satisfactory linearity of an output voltage with respect to temperature. In a semiconductor temperature sensor (1), even if the temperature...
7874724 Method for sensing the liquid level in a compressor  
Two vertically offset thermistors for sensing a fluid such as oil and refrigerant in a compressor shell are monitored by a method that takes into account rapidly changing conditions within the...
7775711 Temperature measurement device and measurement method  
An exemplary temperature measurement device includes a reference voltage source, a three-wire thermal resistor, a voltage drop amplifier, an operational amplifier and compensation resistors. By...
7648270 Temperature measurement of an integrated circuit  
In one embodiment, an integrated circuit (IC) is provided with a thermal diode and a constant current source. In this embodiment, the saturation current of the diode may be determined by means...
7484887 Digitally modified resistive output for a temperature sensor  
A method for digitally controlling the resistive output of a temperature probe is disclosed. The system is comprised of a temperature sensor, a processor and a means under the control of the...
7448797 Component arrangement and method for determining the temperature in a semiconductor component  
A component arrangement is disclosed herein comprising a temperature sensor integrated in a semiconductor body, said temperature sensor being designed to generate a first temperature signal...
7092833 Method and circuit for linearizing nonlinear curves  
A method for linearizing a nonlinear curve with a linearization circuit (1), wherein the curve represents the relationship between input signals and output signals of a sensor. An output signal...
6975047 Temperature-based cooling device controller apparatus and method  
A temperature-based cooling device controller is implemented in an integrated circuit such as a microprocessor. The temperature-based cooling device controller includes a register to store a...
6928379 Apparatus and method for sensing temperature  
An apparatus and method for measuring the temperature in an oven includes a circuit and software algorithm that reads the voltage across a standard resistive temperature device (RTD) or thermistor...
6921198 Patient temperature repeating system and method  
A patient temperature repeating system and a method of repeating patient temperature information from a resistive-type patient temperature sensor allow one or more medical instruments to utilize a...
6567763 Analog temperature measurement apparatus and method  
A temperature measurement device includes at least one constant current generator to provide a first current and a second current to a temperature sensor, and a signal processing element to...
6244744 Three-wire RTD interface  
In a three-wire RTD interface, a known current is connected to a first lead during a first measurement interval. In this configuration, current is directed to the first lead and into an RTD. This...
6236320 Determination of an ambient temperature through the comparison of divided voltages  
A temperature determining apparatus produces a predetermined reference voltage from an operating voltage supplied thereto from the outside, divides the reference voltage with a pair of resistance...
6055489 Temperature measurement and compensation scheme  
An integrated circuit includes: a comparator coupled in a configuration to compare two voltages. One of the two voltages includes a semiconductor junction voltage drop. The other of the two...
5741074 Linear integrated sensing transmitter sensor  
A Linear Integrated Sensing Transmitter Sensor for measuring and reporting temperature has a housing defining a cavity therethrough, a resistance temperature within the housing, and a transmitter...
5655841 Error-compensated temperature measuring system  
An error-compensated temperature measurement system has a temperature sensor, an amplifying circuit and a compensation circuit for compensating non-linearities in the amplifying circuit of the...
5616843 Method and circuit configuration for protecting a heated temperature-dependent sensor resistor against overheating  
A temperature detector resistor and a sensor resistor are disposed in an intake manifold of an internal combustion engine. The two resistors each belong to a respective bridge branch of a...
5253938 Thermistor controlled current source versatile temperature sensor  
An uncomplicated and reliable temperature sensor has a pair thermistors coupled in parallel with a current source that is connected in series with a load resistor. Temperature variations cause a...
5249866 Thermal properties measurement using a superconductor sensor  
A method for thermal environment sensing utilizing superconducting materi finds utility in the production of low power cryogenic flow meters, bolometers, level detectors and other types of thermal...
5171091 Temperature measuring circuit  
The temperature measuring circuit includes a plurality of temperature sensors, each of which is formed by a temperature-dependent measuring resistance having two current terminals and two voltage...
5137370 Thermoresistive sensor system  
A thermoresistive sensor system compensates for ambient temperature of a medium. First and second side-by-side sensors are mounted in the medium, each having a resistance that varies with...
5126937 Biological information measurement apparatus  
A biological information measurement apparatus is adapted to measure biological information in an extracorporeal circuration or in a living body by various measurement circuits comprising circuit...
5121064 Method and apparatus for calibrating resistance bridge-type transducers  
A system and method for calibrating a transducer having a bridge-type network. The calibration includes a source of constant current and a calibration circuit including the source connected across...
5096303 Electronic circuit arrangement for temperature measurement based on a platinum resistor as a temperature sensing resistor  
Electronic circuit arrangement in a temperature measurement circuit based on a platinum resistor (PT) as a temperature sensing resistor, whereby in addition to the platinum resistor there is...
5064296 Integrated semiconductor circuit for thermal measurements  
Integrated semiconductor circuit for thermal measurements, comprising at least a thermal signal comparator (8), the comparator (8) being provided with a signal feedback loop containing a DA signal...
4939920 Monitoring device for roll bearings in rolling mills  
The monitoring device is constructed in such a way that the temperature measurement takes place directly at the bearing and there is no need for detaching connecting lines during changing of...
4854723 Full-range temperature indicator device and circuitry  
Full-range temperature indicators used for the display of a temperature scale represented by the number of lamps illuminated based on the temperature of a thermocouple being detected by IC...
4841229 Method of and circuit for ohmmeter calibration  
The calibrator of an ohmmeter is compensated to eliminate any error as a result of the resistance of leads interconnecting terminals of the ohmmeter and a reference resistance to which the...
4794803 Decompression and air consumption computer  
An improved SCUBA diving gauge. A pictograph display is provided which has a shape which conveys the type of information being displayed. The pictograph has the shape of a SCUBA tank for a tank...
4659236 Flush mounted temperature sensor  
A temperature sensor which is flush mounted on a wall of a room in which the temperature is sensed. A mounting plate secured to the wall has a cavity in its face which receives an aluminum sensor...
4579461 Dual sensor radiation pyrometer  
A pyrometer for determining the temperature of a surface in the presence of reflected radiation has two infrared radiation sensors, each responsive to different wave length, positioned to receive...
4556330 Resistance thermometer and linearization circuitry  
The resistance thermometer comprises a temperature dependent measuring resistor (10) and a measuring circuit (11) for measuring the voltage drop at the measuring resistor which is produced by a...
4556329 Resistor temperature device trip unit  
A resistor temperature device (RTD) trip unit is described. The RTD monitors thermal conditions at an industrial process location, such as in a nuclear reactor. Resistance of the RTD varies in...
4546320 Total temperature probe buffer amplifier  
The elimination of undesirable thermally induced changes of electrical characteristics of signal components is accomplished three operational amplifier circuits. The first operational amplifier...
4423968 Accurate hand-held digital readout thermometer  
A hand-held digital readout thermometer measures temperatures over the range -50° C. to +1100° C. with a maximum error less than 3° C. in that range. The thermometer includes a thermocouple, a...
4414853 Pressure transmitter employing non-linear temperature compensation  
A pressure transmitter is provided for producing a voltage signal representative of the magnitude of pressure being applied to a diaphragm of the transmitter, wherein a network including...
4413917 Resistance measuring system  
A temperature measuring system comprises a sensor which is connected to a supply rail through a first lead, and which may be selectively connected by a relay through a second lead or a third lead...
4309653 Elimination of line impedance error in a three-wire probe interface  
An RTD probe interface having a three-wire interconnection with a source excitation line, a source return line, and a sensed signal line, includes: an excitation signal source connected between...
4305288 Temperature sensing circuit  
An improved temperature sensing circuit is disclosed comprising a power supply which forward biases a diode sensing element to control the gain of an operational amplifier. A temperature change...
4296632 Temperature-to-frequency conversion apparatus  
A temperature-to-frequency converter circuit of the type utilizing a pair of threshold switches connected across a timing capacitor for controlling a circuit output voltage to higher and lower...
4282753 Combination absolute and differential temperature system  
The measurement of small differential temperatures over a wide range of absolute temperatures is accomplished by cyclically switching the excitation polarity to a bridge circuit including the...

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