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| Number | Title | Issue Date |
| 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 electrical signal delivered by the microwave sensor; variable-gain am... | 04/17/2012 |
| 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 increases and a leakage current is generated at bases of a PNP ( | 03/08/2011 |
| 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 dependent on a temperature in the semicon... | 11/11/2008 |
| 7321846 | Two-wire process control loop diagnostics A diagnostic device for coupling to a process control loop includes digital communication circuitry configured to receive a digital communication signal from the process control loop. The digital communication signal is a digitally modulated analog signal on the pro... | 01/22/2008 |
| 7315180 | Device for monitoring quiescent current of an electronic device The present invention is related to a device (1) for measuring the quiescent current IDDQ drawn by an electronic device such as a CMOS device or an IC, from a supply voltage. The quiescent current is drawn in between switching peaks, and is a measu... | 01/01/2008 |
| 7290450 | Process diagnostics A diagnostic device for use in a industrial process includes monitoring electronics or diagnostic circuitry configured to diagnose or identify a condition or other occurrence in the industrial process. The system can be implemented in a process device such as a flow... | 11/06/2007 |
| 7254518 | Pressure transmitter with diagnostics In one embodiment, a pressure transmitter is provided which diagnoses the condition of a primary element and/or an impulse line which connects to a pressure sensor. A difference circuit coupled to the pressure sensor has a difference output which represents the sens... | 08/07/2007 |
| 7228508 | Fail-safe thermal sensor apparatus and method A fail-safe thermal sensor is implemented in an integrated circuit such as a microprocessor. The fail-safe thermal sensor monitors the temperature of the integrated circuit and halt logic halts operation of the integrated circuit in response to the fail-safe thermal... | 06/05/2007 |
| 7159788 | Interior temperature sensing method and apparatus A method and apparatus for more accurately determining the room temperature of air in an automobile cabin by automatically determining the room temperature of air in an automobile based on one or more of a temperature value for solid mass surrounding a temperature s... | 01/09/2007 |
| 7118273 | System for on-chip temperature measurement in integrated circuits A thermal sensor providing simultaneous measurement of two diodes. A first diode and a second diode are coupled to a first current source and a second current source, respectively. The ratio of the currents provided by the two sources is accurately known. The voltag... | 10/10/2006 |
| 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 (100, 110, 120) of the sensor, which is respectively assoc... | 08/15/2006 |
| 7085610 | Root cause diagnostics An industrial process diagnostic apparatus is provided which can identify a source, or “root cause”, of an aberration in an industrial process. A plurality of process configuration models are provided which each represent a physical (or actual) implementation of... | 08/01/2006 |
| 7046180 | Analog-to-digital converter with range error detection A circuit includes a multiplexer, an analog-to-digital converter, and a processor that compares a sequence of digital outputs from the analog-to-digital converter to a sequence of normal ranges that correspond with the digital outputs in order to provide an error ou... | 05/16/2006 |
| 7038996 | Method and apparatus for reading an array of thermal resistance sensors Described is a method for reading an array of sensors having a set of row conductors each connected to the sensors in a corresponding row of the array and a set of column conductors each connected to the sensors in a corresponding column of the array such that each ... | 05/02/2006 |
| 7018800 | Process device with quiescent current diagnostics A process device for use on an industrial process control system includes a quiescent current sensor configured to sense quiescent current draw of the process device. Diagnostic circuitry determines a diagnostic condition of the process device as a function of the s... | 03/28/2006 |
| 7010459 | Process device diagnostics using process variable sensor signal A diagnostic device for use in a process control system receives a sensor signal related to a process variable of a process sensed by a process variable sensor. A signal preprocessor provides a sensor power signal output as a function of a frequency distribution of ... | 03/07/2006 |
| 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 threshold temperature value, a thermal sensor, and clock adjustment logic t... | 12/13/2005 |
| 6970003 | Electronics board life prediction of microprocessor-based transmitters A field device includes circuitry to successively measure a parameter related to current drawn by electronics of the field device. The measurements are provided to a prediction engine which calculates a diagnostic output based upon the plurality of current-related m... | 11/29/2005 |
| 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 to determine temperature measured by the device. Using an unregulated... | 08/09/2005 |
| 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 single patient temperature sensor. In one embodiment, the patient tem... | 07/26/2005 |
| 6920799 | Magnetic flow meter with reference electrode An magnetic flow meter is provided which includes a reference electrode configured to electrically couple process fluid flowing within a flowtube of the flow meter. The reference electrode is adapted to measure potential of the process fluid. A current limiter is co... | 07/26/2005 |
| 6907383 | Flow diagnostic system A flow diagnostic system for a flow sensing element and impulse lines. A pressure transmitter coupled to the impulse lines provides digital pressure data to a control system. The control system provides the pressure data and real time clock readings to a diagnostic ... | 06/14/2005 |
| 6630754 | Temperature-based cooling device controller apparatus and method A temperature-based cooling device controller includes a register to store a threshold temperature value, a thermal sensor, and cooling activation logic to activate an active cooling device in response to an interrupt signal. The thermal sensor includes a... | 10/07/2003 |
| 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 provide an analog output signal corresponding to a temperature of... | 05/20/2003 |
| 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 results in a first signal indicative of a first voltage dro... | 06/12/2001 |
| 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 values having different temperature-resistance characterist... | 05/22/2001 |
| 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 voltages includes a voltage signal, X Vt, where V... | 04/25/2000 |
| 5838578 | Method and apparatus for programmable thermal sensor for an integrated circuit A programmable thermal sensor is implemented in an integrated circuit such as a microprocessor. The programmable thermal sensor monitors the temperature of the integrated circuit, and generates an output to indicate that the temperature of the integrated ... | 11/17/1998 |
| 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 disposed within the housing connected to the resistance tem... | 04/21/1998 |
| 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 temperature sensor. Specifically, the amplifying circuit has a... | 08/12/1997 |
| 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 measuring bridge having a bridge diagonal which is led to a first d... | 04/01/1997 |
| 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 robust current output change that generates a corresponding ... | 10/19/1993 |
| 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 environment sensors. A device for determining the first a... | 10/05/1993 |
| 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 tapping terminals arranged in each case between an associat... | 12/15/1992 |
| 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 temperature change in the medium. A thermal compensation control ci... | 08/11/1992 |
| 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 elements which are not affected by electrical disturbances,... | 06/30/1992 |
| 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 one of the resistive-type transducer elements of the bridg... | 06/09/1992 |
| 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 provided a reference resistor (R1). The measurement circuit (S) ... | 03/17/1992 |
| 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 converter (3), more specifically, the comparator (8) being... | 11/12/1991 |
| 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 rolls. The main features of the monitoring device for roll beari... | 07/10/1990 |
