Class / Patent application number | Description | Number of patent applications / Date published |
073765000 | Compensation (e.g., linearization) | 13 |
20090308172 | Mechanical Properties Testing Device and Method - A mechanical property testing device and method for reliably measuring strain and fatigue characteristics of material specimens is described. An input electrical signal is applied to create an electric field around a first piezoelectric member. The resultant deformation of the first piezoelectric member transfers a force to the specimen being tested which transfers a force to a second piezoelectric member causing deformation. The deformation of the second piezoelectric member generates an output electrical field which is measured. The stress state of the specimen is calculated from fundamental material constants and the measured output electrical field. | 12-17-2009 |
20110113891 | APPARATUS AND METHODS FOR APPLYING STRESS-INDUCED OFFSET COMPENSATION IN SENSOR DEVICES - Apparatus and methods for applying stress-induced offset compensation and/or scale factor correction in sensor devices are provided. One sensor device ( | 05-19-2011 |
20130014589 | Test Circuit With Sense Elements Having Associated And Unassociated Primary Windings - An apparatus for the nondestructive measurement of materials that includes at least two layers of electrical conductors. Within each layer, a meandering primary winding is used to create a magnetic field for interrogating a test material while sense elements or conducting loops within each meander provide a directional measurement of the test material condition. In successive layers extended portions of the meanders are rotated so that the sense elements provide material condition in different orientations without requiring movement of the test circuit or apparatus. Multidirectional permeability measurements are used to assess the stress or torque on a component. These measurements are combined in a manner that removes temperature effects and hysteresis on the property measurements. This can be accomplished through a correction factor that accounts for the temperature dependence. | 01-17-2013 |
20140366636 | SIGNAL COMPENSATION UNIT, BEND SENSOR MODULE, AND INPUT UNIT - A signal compensation unit includes an adjustment section configured to adjust temporal variation characteristics of a detection signal obtained by a bend sensor. The adjustment section includes: a signal amplifier including a positive input terminal, a negative input terminal, and an output terminal, and amplifying the detection signal; and a resistor for adjustment of the temporal variation characteristics disposed between the positive input terminal and the negative input terminal of the signal amplifier. | 12-18-2014 |
073766000 | Temperature | 9 |
20080257056 | COMPENSATION APPARATUS - The invention relates to a compensation apparatus for compensating for thermally induced relative axial positional changes between two components, having a first compensation part ( | 10-23-2008 |
20090056466 | Active temperature differential compensation for strain gage based sensors - An active temperature differential compensation for strain gage based sensors. An array of temperature sensors can be placed at the gage locations to measure the difference in temperature that induces strain on the strain gages. The output of the temperature sensor network can be placed in series with the strain gage network to directly compensate the induced voltage caused by the temperature gradient and/or employed as the input of a mathematical algorithm that can compensate the output from the strain gage bridge to dynamically correct unwanted thermally induced strain in the strain gages. | 03-05-2009 |
20090139340 | Microcantilever Heater-Thermometer With Integrated Temperature-Compensated Strain Sensor - The present invention provides microcantilever hotplate devices which incorporate temperature compensating strain sensors. The microcantilever hotplate devices of the present invention comprise microcantilevers having temperature compensating strain sensors and resistive heaters. The present invention also provides methods for using a microcantilever hotplate for temperature compensated surface stress measurements, chemical/biochemical sensing, measuring various properties of compounds adhered to the microcantilever hotplate surface, or for temperature compensated deflection measurements. | 06-04-2009 |
20110259111 | TEMPERATURE COMPENSATION METHOD FOR FORCE SENSOR AND FORCE SENSOR - There are provided a temperature compensation method for a force sensor and the force sensor which can perform temperature compensation in not only the steady range where the output by the force sensor is stable but also the transient range where the output is unstable. The force sensor temperature compensation method of the present invention eliminates the effect of an environmental temperature from a sensor output value indicating the output value by the force sensor in the transient range where the output by the force sensor is unstable or in the steady range where the output is stable, and includes a preparation step of obtaining the varying pattern of a monitoring output value indicating the environmental temperature in the transient range before the force sensor is measuring an external force, and a correction step of estimating a varying pattern based on a change rate of the monitoring output value while the force sensor is measuring the external force, and of correcting a sensor output value using a correction value obtained based on the estimated varying pattern. | 10-27-2011 |
20120247220 | STRAIN GAGE AND MANUFACTURING METHOD THEREOF - A strain gage includes a strain sensitive element; and a temperature compensation element, wherein the strain sensitive element and temperature compensation element are monolithically formed. A method of manufacturing the strain gage includes: exposing and developing a strain sensitive element pattern and the temperature compensation element pattern; and etching the strain sensitive element pattern and the temperature compensation element pattern. | 10-04-2012 |
20130239695 | SENSING MODULE - A sensing module of the disclosure comprises a sensing device, a voltage generating device, a compensating device, and a voltage controlling device. The sensing device comprises a first reference terminal and a second reference terminal. The compensating device is coupled between the second reference terminal and a voltage reference terminal. The voltage controlling device is respectively coupled to the first reference terminal, the second reference terminal, and the voltage generating device. The voltage controlling device is used for outputting a first voltage signal to the first reference terminal based on the reference voltage signal and a cross voltage of the compensating device. A temperature variation of an impedance of the compensating device positively correlates to a temperature variation of an impedance of the sensing device. A temperature variation of a sensitivity of the sensing device negatively correlates to a temperature variation of the reference voltage signal. | 09-19-2013 |
20130298688 | TEMPERATURE COMPENSATED FORCE SENSOR - A force sensor may include a housing having a cavity enclosing a sense die, an actuating element and an elastomeric seal. The sense die may have a force sensing element for sensing a force applied to a surface of the sense die, and a temperature compensation circuit. The temperature compensation circuit may be located on the surface of the sense die and may be configured to at least partially compensate for the temperature sensitivity of the force sensing element. The actuating element may extend outside the housing and be used to transfer a force applied externally from the housing to the sense die. The elastomeric seal may include one or more conductive elements separated from the edge of the elastomeric seal by an insulating elastomeric material. | 11-14-2013 |
20140331778 | Identification of Environmental Sensor Changes and Temperature Sensor Changes with a Two Layer Bulk Acoustic Wave Resonator - Provided is a method for measurement of a change in environment at a sensor. The sensor has: a first layer formed of a piezoelectric material; a second layer formed adjacent the first layer and acoustically coupled with the first layer; and electrodes disposed to apply a driving signal to the first layer to generate bulk acoustic waves. The temperature coefficient of frequency of the first layer is different to that of the second layer. In the method, a first layer resonant frequency associated with the first layer and a combination resonant frequency associated with a combination of the first and second layers are detected. A shift in one or both of the first layer resonant frequency and the combination resonant frequency is detected. A portion of the shift caused by a temperature change at the sensor is identified. Another portion of the shift caused by an environmental change at the sensor other than the temperature change is identified. Also provided is a corresponding sensor and sensor system operable to carry out the method. | 11-13-2014 |
20150330852 | TEMPERATURE COMPENSATION FOR MONITORING A LOAD BEARING MEMBER - An exemplary system includes a moveable mass. A load bearing member includes at least one electrically conductive tension member that supports a load associated with movement of the mass. An electrically conductive member is situated along a selected portion of a path of movement of the load bearing member. The electrically conductive member is not subject to a load on the tension member. A processor is configured to determine an electrical resistance of the tension member as an indicator of a condition of the tension member. The processor is configured to determine an electrical resistance of the electrically conductive member. The processor uses the determined electrical resistance of the electrically conductive member to compensate for any environmental influence on the determined electrical resistance of the tension member. | 11-19-2015 |