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5960375 |
Transmitter with improved compensation
A circuit for compensating variables in a measurement transmitter. Within the transmitter, a sensor senses a primary process variable such as differential pressure and a converter digitizes the...
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5948030 |
Steering angle determaination method and apparatus
In a vehicle with a hand wheel, steerable wheels positionally responsive to the hand wheel and a steering position sensor coupled to the handwheel and providing a handwheel angle signal indicative...
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5943636 |
Method and apparatus to calibrate and run optical delay devices
A calibrate and run bias voltage control method for an optical delay system utilizing a plurality of voltage controlled switches which may experience bias drift wherein during calibration an output...
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5940780 |
Universal transceiver
A device is disclosed for interfacing with a variety of transducer types to generate a measurement value of a certain property. The device has at least one sensor block that in turn has at least...
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5918191 |
System and method for managing data for an equipment calibration laboratory
A system and method for managing data in calibration laboratory is disclosed. The system includes a database server, a database management system (DBMS) executing on the database server, and at...
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RE36200 |
Disposable electronic monitor device
Apparatus for monitoring an externally applied parameter to selected products. The invention involves a housing enclosing a sensor, and a monitoring and output network. The sensor has a...
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5878359 |
Vehicular control device provided with an accelerator detecting device which detects the operation of an accelerator device
An accelerator sensor detects an operation amount of an accelerator pedal. A microcomputer determines if a relation between the detected operation amount and an operation of the accelerator...
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5864944 |
Mounting apparatus of electronic components and mounting methods of the same
An apparatus and method for improving the productivity and accuracy of mounting electronic components on a substrate. The mounting apparatus includes a line-sensor for image recognition, a carriage...
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5864775 |
Method of and apparatus for calibrating rotary position transducers
A rotary position transducer comprises a sensor cooperating with a toothed wheel which has nominally evenly spaced teeth and which may, for instance, be mounted on the crankshaft of an internal...
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5856195 |
Method and apparatus for calibrating a sensor element
A method and apparatus are provided for calibrating a sensor for determination of analyte concentration. The meter includes a sensor for receiving a user sample to be measured and a processor for...
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5848383 |
System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature
A method and system for calibrating a sensor is disclosed The method and system include receiving data relating to a plurality of temperature parameters and providing polynomial compensation of a...
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5789622 |
Focal plane array calibration method
A method of calibrating gains and offsets for a two-dimensional detector array 10 comprising individual detector elements 14, including: (a) focusing a first incoming image signal at a first power...
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5774378 |
Self-validating sensors
A sensor for provides a measurement and information about the validity of the measurement. The sensor includes a transducer for generating a data signal related to the value of a variable and a...
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5764067 |
Method and apparatus for sensor signal conditioning using low-cost, high-accuracy analog circuitry
The present invention, generally speaking, provides for highly accurate correction of a sensor output using circuitry that is compact and inexpensive. In accordance with one embodiment of the...
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5764539 |
Non-invasive system and method for a fluid flow monitoring system
A non-invasive system and method is provided for a fluid delivery system of the type including a fluid delivery pump delivering fluid in pulses through a fluid delivery tube. The non-invasive...
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5757425 |
Method and apparatus for independently calibrating light source and photosensor arrays
A method of calibrating an image sensor having an array of pixel sensor sites, and an area light source having a corresponding array of pixel emission sites, comprising the steps of: a....
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5751601 |
Autocalibration of optical sensors
A method of calibrating optical sensors for a thermal printer (10) is disclosed. A thermal printer for printing color images which uses a dye donor web having a repeating series of spaced frames of...
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5719790 |
Method and circuit configuration for compensating for signal errors of a yaw velocity sensor
A method and a circuit configuration for compensating for signal errors of a yaw velocity sensor used in regulating driving stability of a motor vehicle include ascertaining a driving state in...
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5712467 |
Method of calibrating and/or monitoring a controlled-temperature heating device
A heated galette is provided with a heating unit and a temperature sensor connected in a control circuit with the heating unit to maintain a certain temperature of the surface of the galette on...
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5712803 |
Method of acquiring and digitizing objects through a transparent wall
In a method of and system for acquiring and digitizing an object through a transparent wall the system for acquiring and digitizing sections of objects includes a plurality of sensors carried by a...
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5675516 |
System and method for determining pushup of a molded glass container
System and method of operation thereof for inspecting glass containers handled by a glass container handling apparatus to determine a height of a bottom of at least one of the containers. The...
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5669713 |
Calibration of process control temperature transmitter
A transmitter in a process control loop measures temperature. A calibrator includes a known calibration element which is connected to the transmitter. Software in the transmitter compares a...
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5654907 |
Method for fast Kalman filtering in large dynamic system
The invention is based on the use of the principles of Lange's Fast Kalman Filtering (FKF™) for large process control, prediction or warning systems where other computing methods are either too...
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5642045 |
Magnetic field gradiometer with improved correction circuits
An improved magnetic field gradiometer having major and minor correction circuits is disclosed. The major correction circuits cancel the main components of an applied magnetic field, such as the...
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5617337 |
Method and device for monitoring sensor functions
A method and a device for monitoring the functions of a sensor, in particular of a sensor for detecting a measurable value in a motor vehicle. If specified operating states exist, a measurable...
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5606516 |
Digitally compensated hydraulic scale system
A pressure transducer module includes a plurality of cavities, each cavity in fluid communication with a hydraulic load cell. Each cavity deforms with variations in the pressure of the hydraulic...
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5604685 |
Circuit arrangement for the linearization and temperature compensation of sensor signals
A circuit arrangement for the linearization and temperature compensation of capacitive sensor signals is provided which requires few components and wherein the compensated input signal is obtained...
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5604684 |
Embedded programmable sensor calibration method
A method for quick and low cost calibration of a sensor to remove span and offset errors. Span and offset errors are removed using a circuit which produces a corrected output signal as a function...
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5579244 |
Pressure controller
A pressure controller of the type using pulse width modulated apply and release solenoid valves (80, 82) connected to an outlet port (74) of the controller overcomes the technical problem of poor...
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5574664 |
Method for calibrating computer monitors used in the printing and textile industries
An apparatus for calibrating color settings of a computer monitor to cause a proofed image, i.e., a prepress image, to essentially match a printed image on a particular medium, allowing the...
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5569835 |
Reference wire compensation method and apparatus
A scanning system for monitoring the thickness, profile or other data from a moving product which includes a frame for mounting scanning transducers. The product is carried on a conveyor or the...
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5559431 |
Method of calibrating a sensor
To suppress and compensate influences of disturbance variables, a method of calibrating a sensor is disclosed, in which at most as many so-called influence variables influencing the measuring...
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5557554 |
Calibration method for protrusion detecting head units and protrusion inspection method and protrusion inspection device using the same
A calibration method for protrusion detection head units including steps of selecting as a master head unit a protrusion detection head unit of which lifting characteristic is known, further...
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5544079 |
Smart mass gas flow sensor
A smart mass gas flow sensor is having a housing with a bore through which a gas flows in which a sensor in the housing generates an analog signal proportional to the mass gas flow through the...
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5534773 |
Method for compensating an offset voltage temperature drift in a semiconductor strain gage sensor
A method for compensating an offset voltage temperature drift in a semiconductor strain gage sensor in which a temperature-sensitive power supply is modeled as the one for providing the output...
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5531115 |
Self-calibrating three axis angular rate sensor
A self-calibrating three axis angular rate sensor in which a single proof mass is supported from an outer case by a set of spring elements having substantially equal mechanical translational spring...
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5528520 |
Calibration circuit for capacitive sensors
A calibration circuit for a capacitive sensor is disclosed which compensates for any offsets or sensitivity variations of the sensor once the sensor has been calibrated. The circuit uses digital...
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5528555 |
System and method for compensating for towed array motion induced errors
A system for compensating for noise induced in a sensor data stream from a sensor array towed by a towing device includes a towing device motion data input receives a towed motion data stream...
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5526287 |
Portable data collection device
The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a...
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5506794 |
Apparatus and method for calibrating a sensor system using the Fast Kalman Filtering formula
A method and apparatus for calibrating a sensor system output that includes a logic unit (1) for receiving uncalibrated sensor signals from a centralized sensor system (3) and for reading/writing...
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5504681 |
Mass air flow sensor calibration
A mass air flow sensor is calibrated by exposing it to known air flow and measuring the input and output voltage to a calibratable output stage. In the absence of air flow, the output stage is then...
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5502659 |
Method and apparatus for calibrating moisture sensors
An apparatus and method are provided for calibrating a measuring transmitter which provides an output signal proportional to a parameter of interest measured by a sensor in the measuring...
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5494826 |
Microcalorimeter sensor for the measurement of heat content of natural gas
A microcalorimeter includes instrumentation for reducing measurement errors due to system fluctuations. One or more sensors is utilized to detect heat content of a sample gas, and create a...
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5479096 |
Analog sensing system with digital temperature and measurement gain and offset correction
Disclosed is a digital correction system for application to an analog parameter measurement transducer. A temperature sensor, either separate from or incorporated into a parameter measurement...
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5450336 |
Method for correcting the drift offset of a transducer
A method for correcting the drift offset of a transducer is disclosed which method is used in connection with a portable, battery-powered, hand-held system for releasing a controlled dose of...
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5438516 |
Integrated vehicle brake control device position sensor with precalibrated multiple sensor outputs
An integrated throttle position validation sensor includes electrically independent throttle position and position validation components responsive to a single mechanical input applied to a...
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5369580 |
Yawing-momentum detecting apparatus for a vehicle, a detecting method thereof, and motion controlling apparatus for a vehicle, utilizing the detecting apparatus
A novel yawing-momentum detecting apparatus, and yawing-detecting method for a vehicle, and also a motion controlling apparatus for the vehicle with employment of this yawing-momentum detecting...
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5369603 |
Calibration of a non-linear sensor
A method and apparatus for determining the calibration characteristic of a sensor which produces an output signal which has a non-linear relationship to the value of a measured parameter. In one...
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5365768 |
Sensor
A signal processor (5) is coupled to a detector (6) for detecting a physical quantity. The signal processor has a zero adjustment memory (14) and a sensitivity adjustment memory (16). The zero...
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RE34789 |
Infrared electronic thermometer and method for measuring temperature
An electronic infrared thermometer is disclosed comprising a housing forming an interior chamber, a pyroelectric sensor mounted within the chamber for sensing temperature change and generating an...
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