Class / Patent application number | Description | Number of patent applications / Date published |
324457000 | ELECTROSTATIC FIELD | 62 |
20080197853 | Electric field probe - This is an electronic scanning probe, preferably made up of at least two sensing elements, each sensing element substantially surrounded by reference electrodes. These sensing elements are separated at a distance that causes little or no cross-interference to take place between these sensing elements when positioned in concert with a surface of interest. Ideally, this probe is used in electrostatic marking systems where an electrostatic charge is placed onto a receiving surface. | 08-21-2008 |
20080218172 | POTENTIAL MEASURING APPARATUS - A potential measuring apparatus has a detection electrode on which an electric charge is induced according to a potential of a detection object, and a modulator for altering the generated quantity of the electric charge. The detection electrode has at least one depressed portion on a surface opposite to the detection object. | 09-11-2008 |
20080238433 | Sensor Product for Electric Field Sensing - A sensor product for electric field sensing. The sensor includes a substrate, at least one electrically conductive area on the surface of the substrate, an output, and at least one conductor between the at least one electrically conductive area and the output. Also a sensor product web. | 10-02-2008 |
20080246490 | METHODS AND APPARATUS FOR AN IN-FLIGHT PRECIPITATION STATIC SENSOR - A precipitation static sensor includes a bottom flexible dielectric layer (e.g., a layer of urethane tape) configured to be attached to a wing or other external surface of an aircraft, a flexible conductive layer (e.g., a layer of aluminum tape) formed over a portion of the first flexible dielectric layer, and a conductor (such as a twisted-pair wire) coupled to the flexible conductive layer. A top flexible dielectric layer is formed over a portion of the bottom dielectric layer and a portion of the flexible conductive layer, thus forming an exposed detector region. In accordance with a further embodiment, multiple such precipitation static sensors are used and coupled to a meter device (e.g., a picoammeter), which may also be coupled to a data acquisition and display for providing a visual indication of the charge accumulated by the precipitation static sensors. | 10-09-2008 |
20080265902 | SPECIFIC ABSORPTION RATE MEASUREMENT SYSTEM AND METHOD - A disclosed specific absorption rate measurement system according to an embodiment of the present invention measures a specific absorption rate of electromagnetic waves from a radiating source absorbed in a dielectric medium. The system includes a measurement portion that measures a first electric field vector on an observation surface which is a two-dimensional surface in the dielectric medium; an electric field calculation portion that calculates a second electric field vector in a point excluded from the observation surface in accordance with electric field components of the first electric field vector measured on the observation surface, the electric field components being parallel to the observation surface; and a calculation portion that calculates the specific absorption rate from the calculated second electric field vector. | 10-30-2008 |
20080284445 | POTENTIAL MEASUREMENT APPARATUS AND IMAGE FORMING APPARATUS - A potential measurement apparatus is provided which can suitably maintain the oscillation state of an oscillator including a detection electrode and stably measure the potential of a measurement object. The potential measurement apparatus includes a bearing part, an elastic supporting part supported by the bearing part, an oscillator movably supported by the elastic supporting part, detection electrodes installed in the oscillator, a drive mechanism driving the oscillator and a signal detection unit. The signal detection unit is connected to the detection electrodes to detect electrical signals appearing in the detected electrodes. A stress detecting element for generating an electric signal according to the stress of the elastic suspension part | 11-20-2008 |
20080284446 | Determination of Field Distribution - A method for determining field intensity for a particle on a substrate, the method comprising providing an incident wave, determining an electric vector of the field and a magnetic vector of the field inside and outside of the particle, and determining additional scattered fields inside and outside of the particle due to reflection of the incident wave from the substrate. | 11-20-2008 |
20080303530 | Electrostatic Sensor - An electrostatic sensor generally includes a sensor head with at least one passive sensing electrode responsive to an electric field and a high-impedance amplification stage associated with the sensing electrode. The high-impedance amplification stage is configured for outputting at least one output signal in response to an electric signal induced on the at least one sensing electrode by the electric field. The sensor head further includes a screen of electrically insulating material, which is associated with the at least one sensing electrode. In an operational mode of the electrostatic sensor, the screen is electrically charged and induces an electric field in the surroundings of the sensing electrode. | 12-11-2008 |
20090015263 | Ion Control Sensor - A static electricity removal device that removes static electricity by supplying positive and negative ions to a target of static electricity removal, comprising a surface potential measuring probe that measures a surface potential of the target of static electricity removal, wherein a potential detector ( | 01-15-2009 |
20090027057 | Ethernet Electrometer - An electrometer includes an input terminal adapted to receive an input signal an ethernet terminal, a web server, and a microcontroller. The ethernet terminal is adapted to receive an ethernet cable such that electrical power is provided to the ethernet terminal. The web server is in electrical communication with the ethernet terminal, and is adapted to receive a command. The microcontroller is in electrical communication with at least one of the ethernet terminal and the web server, and is adapted to execute the received command. | 01-29-2009 |
20090045816 | ELECTROMETER WITH IN-MEASUREMENT RANGE ADJUSTMENT AND METHODS THEREOF FOR MEASURING ELECTROSTATIC CHARGE - An electrometer is disclosed. The electrometer has a high gain differential amplifier having a first input, a second input, and an output. The electrometer also has feedback switching circuitry. The electrometer further has a plurality of feedback elements configured to be selectively and cumulatively added in any parallel combination between the output and the first input of the high gain differential amplifier via the feedback switching circuitry. A method of adjusting a measurement range of an electrometer while the electrometer is being used to measure an electrostatic charge is also disclosed. One or more additional feedback elements are selectively added in parallel with one or more existing feedback elements which are coupled between an output and an input of a high gain differential amplifier of the electrometer. | 02-19-2009 |
20090115422 | JIG FOR DETECTING POSITION - A transfer point of a transfer arm is detected accurately and stably by using a position detecting wafer having an electrostatic capacitance sensor. A position detecting wafer S is formed in a wafer shape transferable by a transfer arm | 05-07-2009 |
20090121722 | Method for Assessing the Suitability of Metered Dose Inhaler Actuators - A method of assessing the suitability of a metered dose inhaler actuator A test canister equipped with a valve and containing a pressurized propellant is provided. One or more actuators manufactured for use in a metered dose inhaler is provided and tested, wherein each actuator is tested by coupling the canister to the actuator, positioning the actuator with respect to an electrostatic measurement device and firing the canister such that electrostatic charge from an aerosol emitted by the canister is measured by the electrostatic measurement device. The measured electrostatic charge is compared to a predetermined specification range to make a determination whether the measured electrostatic charge is within or outside the predetermined specification range and accordingly whether the actuator is or is not acceptable. | 05-14-2009 |
20090121723 | ELECTROSTATIC DISCHARGE DEVICE TESTING SYSTEM AND METHOD - There is disclosed an electrostatic discharge (ESD) device tester and a method of operating the tester. In an embodiment, the method comprises operating the tester by uniquely identifying an ESD device to be tested using identification means provided on the tester; taking at least one test measurement of the uniquely identified ESD device using testing means provided on the tester, the testing means being configurable in dependence upon data associated with the uniquely identified ESD device; and storing the at least one test measurement in a storage means provided in the tester. A running average of test measurements for the uniquely identified ESD device may be stored on the tester in order to compare a test measurement against the running average. A test is repeated if a test measurement falls outside of a predetermined range of the running average. | 05-14-2009 |
20090167313 | ELECTROSTATIC DISCHARGE EVENT AND TRANSIENT SIGNAL DETECTION AND MEASUREMENT DEVICE AND METHOD - An electrostatic discharge (ESD) event and transient signal detection and measurement device and method are described. The device and method are able to distinguish between an ESD event and other non-ESD events. | 07-02-2009 |
20090195253 | Method for Assessment of Electrostatic Properties of Fibers or Substrates - Method for assessment of electrostatic properties of fibers or substrates, this method being particularly useful for demonstrating the efficacy of a composition for minimizing the accumulation of particles onto fiber or substrate, and for supporting advertising claims about this efficacy. | 08-06-2009 |
20090195254 | Method for Assessment of Electrostatic Properties of Fibers or Substrates - Method for assessment of electrostatic properties of fibers or substrates, this method being particularly useful for demonstrating the efficacy of a composition for minimizing the accumulation of particles onto fiber or substrate. | 08-06-2009 |
20090309604 | Electrostatic monitoring system - An electrostatic monitoring system for detecting a risk of electrostatic discharge is used to detect conditions under which electrostatic discharge is likely, at distances sufficient to provide the time needed to take corrective action and mitigate any harmful effects. The system monitors electrostatic discharge conditions in the order of a few meters away, and preferably determines the direction of maximum hazard. By the invention, personnel can be screened upon entering a vulnerable area, sensitive equipment can be protected by placing sensors on the equipment to detect the risk of electrostatic discharge due to the local static potential and to preemptively turn off the equipment, and wearable sensors can be installed in clothing of personnel working in environments with high electrostatic hazard to protect both personnel and equipment. | 12-17-2009 |
20090309605 | ELECTRIC POTENTIAL SENSOR - The present invention provides an electric potential sensor for the measurement of potentials non-invasively. The sensor comprises at least one detection electrode arranged for capacitive coupling with a sample under test and for generating a measurement signal, and a sensor amplifier adapted to receive the measurement signal as input and to supply an amplified detection signal as output. Input impedance enhancing means are included for providing a high input impedance to the sensor amplifier for increasing the sensitivity of the electrode to reduced electric potentials, and a discrete pre-amplifier stage is arranged to co-operate with the sensor amplifier to reduce the input capacitance of the amplifier. | 12-17-2009 |
20100073006 | Apparatus and Method of Charge Induction for Cable to System Testing - The present invention is directed to an apparatus that minimizes the effects of hand capacitance on a cable, the apparatus also being configured to generate and induce a charge, wherein the charge couples a capacitance to the cable, the capacitance matching a typical capacitance that a hand couples to a cable. The present invention is also generally directed to a method of performing a cable to electronic system electrostatic discharge immunity test. | 03-25-2010 |
20100156428 | FOIL-LEAF ELECTROMETER FOR STATIC FIELD DETECTION WITH PERMANENTLY SEPARATING LEAVES - An apparatus for detecting a static field includes two surfaces of conductive material that are (i) electrically coupled to each other, and adjacent to each other. The two surfaces repel each other in the presence of a static field. The conductive material has a deformation property such that stress caused by repulsion of the two surfaces from each other by at least a predetermined distance causes at least one of the surfaces to permanently deform. | 06-24-2010 |
20100259272 | SENSOR ARRANGEMENT - Utilisation of electrostatic sensor elements is known in relation to obtaining images from a surface such as that of a patient with regard to anomalies including carcinomas. Electrostatic sensor elements, by their nature, are susceptible to creating spurious results in terms of their location with respect to the surface of the subject to be viewed. By providing a visual camera within an array of electrostatic sensor elements the electrostatic charge distribution image is provided by the camera. The image can be overlaid and married with the visual image in a proportionate ratio. In such circumstances an improved final image is provided with inherent visual references to allow analysis of the combined rich display image. A visual camera such as a CCD is used as it is substantially of the same size as the electrostatic sensor elements. | 10-14-2010 |
20110025339 | MAGNETORESISTIVE ELELCTROSTATIC DISCHARGE (ESD) DETECTOR - A magnetoresistive electrostatic discharge (ESD) event detector includes at least one magnetoresistive device. The at least one magnetoresistive device detects an ESD event in an ESD sensitive device based on magnetoresistive properties of the at least one magnetoresistive device. The at least one magnetoresistive device comprises an ESD failure level that is lower than the ESD failure level of said ESD sensitive device. | 02-03-2011 |
20110148427 | TRIBOCHARGE TEST FIXTURE - A fixture can include a test fixture that holds an object whose electrostatic charge characteristics are to be measured, means for moving a piece of rubbing material into contact with the object, and means for rubbing a surface of the object. A method for measuring the electrostatic charge characteristics of an object using a test fixture can include: placing the object in the test fixture, moving a piece of rubbing material into contact with the object and rubbing a surface of the object with the piece of rubbing material for a period of time. The rubbing causes an electrostatic charge to be built up on the surface of the object. The electrostatic charge characteristics of the object can be measured and the measured electrostatic charge characteristics of the object can be displayed. | 06-23-2011 |
20120092019 | Electric Field Signature Detection Using Exciter-Sensor Arrays - An electric field signature detector for detecting and identifying objects that uses multiple electrostatic sensor nodes each having a passive sensing electrode whose free conduction electrons are displacement responsive to an externally applied or sensed electric field potential, and a transimpedance converter and amplifier exhibiting ultra-high input impedance for translating low level input displacement current from a sensing electrode into a useable output signal in response to a charge displacement signal induced on the passive sensing electrode by an external electric field. The electric field signature detector further includes an exciter for providing a reference electric field used in the retrieval and processing of an electric field signature representative of an object and class of object under investigation. The electric field signature detector having uses including military, security, anti-terrorist, and defense related. | 04-19-2012 |
20120161777 | OCCUPANT DETECTION APPARATUS, OCCUPANT DETECTION METHOD AND VEHICLE - An occupant detection apparatus includes an electrostatic capacitance type sensor having a main electrode, a sub electrode and a guard electrode, an impedance measurement device that outputs an alternating current signal to measure an impedance, and an occupant discrimination device that discriminates an occupant. | 06-28-2012 |
20120206147 | ELECTROSTATIC CAPACITIVE SENSOR - An electrostatic capacitive sensor able to detect a first electrostatic capacitance and a second electrostatic capacitance, comprising: a member wherein is formed a movable diaphragm that has electrical conductivity; a thin-film electrode that forms a first electrostatic capacitance with the diaphragm; a thin-film electrode that forms a second electrostatic capacitance with the diaphragm; an upper member that is provided so as to form a space between itself and the top face of the diaphragm; and a tower member that is provided so as to form a second space between itself and the bottom face of the diaphragm; wherein: a gas is filled into the space and another gas, which has a coefficient of thermal expansion different from that of the gas, is filled into the second space. | 08-16-2012 |
20130009647 | SENSOR DEVICE - A sensor device includes a first electrode, a second electrode, a gap forming member and a functional element. The first electrode is composed of a first metallic material. The second electrode is spaced apart from the first electrode, and composed of a second metallic material. The gap forming member is arranged with a gap being formed between the gap forming member and a portion of a surface of the first electrode. The functional element is configured and arranged to measure a difference in electric potential between the first electrode and the second electrode so that a state of a measurement site to be measured is measured based on the difference in electric potential as measured by the functional element. | 01-10-2013 |
20130069664 | INDIRECT NON-CONTACT HIGH VOLTAGE MEASUREMENT ON ELECTRICAL POWER LINE - A non-contact electrical power line voltage measurement device comprises a probe including an insulated shield supporting an electrode to sense electrostatically induced voltage from the power line. The shield houses a high voltage resistor connected in series with the electrode. A meter comprises a housing operatively associated with the shield and enclosing a measurement circuit electrically connected to the high voltage resistor for measuring induced electrode voltage. A calibration circuit correlates measured electrode voltage to power line voltage. A display is driven by the measurement circuit for displaying actual power line voltage responsive to the electrode being a select distance from the power line. | 03-21-2013 |
20130069665 | USING A FIELD EFFECT DEVICE FOR IDENTIFYING TRANSLOCATING CHARGE-TAGGED MOLECULES IN A NANOPORE SEQUENCING DEVICE - A detector apparatus includes a field-effect transistor configured to undergo a change in amplitude of a source-to-drain current when at least a portion of a charge-tagged molecule translocates through the nanopore. In some implementations, the field-effect transistor is a carbon nanotube field effect transistor and the nanopore is located in a membrane. In other implementations, the field-effect transistor is a carbon nanotube field effect transistor and the nanopore is implemented in the form of a nano-channel in a semiconductor layer. | 03-21-2013 |
20130193978 | Aerosol Detection - Aerosol detection apparatus comprises an aircraft having a dielectric member, such as a window ( | 08-01-2013 |
20130285668 | ELECTROSTATIC DISCHARGE EVENT DETECTOR - A device for detecting an electrostatic discharge event by an object, the device comprising: a receiver for forming a first capacitive coupling with the object and a second capacitive coupling with a ground; and a first discharge path for discharging the second capacitive coupling to the ground, such that an electrostatic discharge event by the object charges the second capacitive coupling by an amount in a first time interval Δt | 10-31-2013 |
20130307552 | STATIC-ELECTRICITY ELECTRIFICATION MEASUREMENT METHOD AND APPARATUS - [Problem to be Solved] A static-electricity electrification measurement method and apparatus that satisfy, at the same time, three conditions: (1) to measure static-electricity electrification non-destructively, (2) to reduce environmental influence of a measured object wherein metals and insulators are mixed to measure the static-electricity electrification, and (3) to measure the static-electricity electrification without getting close thereto is provided. | 11-21-2013 |
20140152319 | REDUCING MOVEMENT AND ELECTROSTATIC INTERFERENCE IN A NON-RESISTIVE CONTACT SENSOR ASSEMBLY - A non-resistive contact sensor assembly, includes a non-resistive contact sensor device, a first inner region of material in which the sensor device is surrounded or embedded, a boundary region, around the first inner region, that is at least partly comprised of a conducting material and that picks up electrical charge from the first inner region, a second inner region around the boundary region, an outer region around the second inner region, and at least one diode, disposed in the second inner region and connected between the boundary region through the second inner region to the outer region. | 06-05-2014 |
20140253136 | SURFACE POTENTIAL MEASURING APPARATUS AND SURFACE POTENTIAL MEASURING METHOD - An apparatus for measuring a surface potential of an object on an underlying structure is disclosed. A relatively-moving mechanism moves a probe and a second support member relative to each other until the probe faces a reference structure on the second support member, an electric potential measuring device measures the surface potential of the reference structure through the probe, the controller calibrates the electric potential measuring device such that a measured value of the surface potential of the reference structure becomes 0, the relatively-moving mechanism moves the probe and a first support member relative to each other until the probe faces the object on the first support member after the calibration, and the electric potential measuring device measures the surface potential of the object through the probe. | 09-11-2014 |
20140300368 | SURFACE POTENTIAL DISTRIBUTION MEASURING DEVICE AND SURFACE POTENTIAL DISTRIBUTION MEASURING METHOD - In a surface potential distribution measuring device for an electric field reduction system of a rotating electrical machine, a Pockels crystal is used between a laser and the surface (test location) of the electric field reduction system. Thus, the light Light intensity of a laser beam reflected on a mirror provided between the Pockels crystal and the test location corresponds to an output voltage that is the voltage difference between the first end surface and the second end surface of the Pockels crystal. Even when an inverter voltage is generated, by using a light detector having a frequency band capable of following the high frequency components of the inverter pulse voltage, the light intensity is detected by the light detector. Therefore, from the light intensity (output voltage), the surface potential distribution measuring device can measure the surface potential of the electric field reduction system in which an inverter pulse voltage is generated. | 10-09-2014 |
20140312916 | METHODS OF AND APPARATUSES FOR MEASURING ELECTRICAL PARAMETERS OF A PLASMA PROCESS - A sensor apparatus for measuring a plasma process parameter for processing a workpiece. The sensor apparatus includes a base, an information processor supported on or in the base, and at least one sensor supported on or in the base. The at least one sensor includes at least one sensing element configured for measuring an electrical property of a plasma and may include a transducer coupled to the at least one sensing element. The transducer can be configured to receive a signal from the sensing element and convert the signal into a second signal for input to the information processor. | 10-23-2014 |
20140340093 | LIQUID ION DETECTOR - A system and method comprising a liquid interface with an electrode. The electrode may be coupled to a MEMS-based electrometer for sensing small amounts of charge imposed on the electrode. In some embodiments ion exchangers may be employed to provide for specific selectivity for certain ions or molecules. The electrometer may include a comb drive actuator coupled to a moving shuttle supported on flexures. | 11-20-2014 |
20140347061 | ELECTROSTATIC DETECTING CIRCUIT AND METHOD THEREOF - An electronic detecting circuit includes at least one electrostatic protective module, at least one detection module, and a microprocessor controller module. The at least one detection module is respectively connected to the at least one electrostatic protective module, and the at least one detection module generates a driving record signal according to a driving state of the at least one electrostatic protective module. The microprocessor controller module is coupled with the at least one detection module, wherein the microprocessor controller module records the driving record signal when the at least one detection module transmits the driving record signal to the microprocessor controller module. | 11-27-2014 |
20150028881 | SURFACE POTENTIAL SENSOR AND COPYING MACHINE - This surface potential sensor is provided with an electret electrode ( | 01-29-2015 |
20150137825 | Ephemeral Electric Potential and Electric Field Sensor - Systems, methods, and devices of the various embodiments provide for the minimization of the effects of intrinsic and extrinsic leakage electrical currents enabling true measurements of electric. potentials and electric fields. In an embodiment, an ephemeral electric potential and electric field sensor system may have at least one electric field sensor and a rotator coupled to the electric field sensor and be configured to rotate the electric field sensor at a quasi-static frequency. In an embodiment, ephemeral electric potential and electric field measurements may be taken by rotating at least one electric field sensor at a quasi-static frequency, receiving electrical potential measurements from the electric field sensor when the electric field sensor is rotating at the quasi-static frequency, and generating and outputting images based at least in part on the received electrical potential measurements. | 05-21-2015 |
20150355252 | APPARATUS AND METHOD FOR MONITORING AND CONTROLLING DETECTION OF STRAY VOLTAGE ANOMALIES - Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. In some embodiments, an apparatus for detecting an electrical field may comprise: at least one sensor probe for generating data corresponding to an electrical field detected by the at least one sensor probe, wherein the at least one sensor probe comprises at least one electrode; a processor, coupled to the at least one sensor probe, for analyzing the data to identify a voltage anomaly in the electric field; and an indicator, coupled to the processor, for alerting a user to a presence of the voltage anomaly in the electric field. | 12-10-2015 |
20160011233 | BRUSH SENSOR FOR MEASURING STATIC CHARGE OF FIBERS | 01-14-2016 |
20160033564 | INTEGRATED CIRCUIT PROTECTION DURING HIGH-CURRENT ESD TESTING - A method of protecting devices within an integrated circuit during electro-static discharge (ESD) testing using an ESD test system is provided. The method includes applying a direct current (DC) bias voltage to an input of at least one device of the integrated circuit and applying an ESD simulated signal to at least one other input of the integrated circuit. The applied ESD simulated signal is conducted along a first current path to a first ground, while a low-current signal associated with the at least one device is conducted along a second current path to the second ground. The DC bias voltage is maintained between the input of the at least one device and the second ground at a substantially constant value in response to a signal variation on the second ground that results from the applied ESD simulated signal. | 02-04-2016 |
20160041215 | SURFACE POTENTIAL DISTRIBUTION MEASURING DEVICE - A surface-potential distribution measuring device includes: a laser light source; a Pockels crystal; a mirror; a photodetector that detects light intensity of the laser beam reflected by the mirror; a holding and mounting part that holds and moves the Pockels crystal; a voltage correction database; and a calculation unit that identifies an input voltage corresponding to a testing output voltage as a surface potential of the electric-field-reduction system. The Pockels crystal is formed in such a way that a size of a cross section of the Pockels crystal that is perpendicular to an axial direction changes along the axial direction. The holding and mounting part has a protection unit to protect a structure of the Pockels crystal, a movement unit to that moves the Pockels crystal in order to measure a surface potential of the electric-field-reduction system, and a drive control unit to control the movement unit. | 02-11-2016 |
20160054262 | SYSTEM, METHOD AND COMPUTER-ACCESSIBLE MEDIUM FOR PROVIDING GENERALIZED LOCAL MAXWELL TOMOGRAPHY FOR MAPPING OF ELECTRICAL PROPERTY GRADIENTS AND TENSORS - Exemplary system, method, and computer-accessible medium can be provided for determining at least one property (e.g., an electrical property or a cross-section property) of at least one target. For example, it is possible to determine electromagnetic-field-related quantities associated with signals provided from the target(s). The electromagnetic-field-related quantities can be provided to procedures to relate the electromagnetic-field-related quantities to a plurality of unknown electrical property values and residual field-related unknown values of the target(s). The property(ies) of the target(s) can be determined by determining the plurality of unknown electrical property values and residual field-related unknown values of the target(s). | 02-25-2016 |
20160091546 | HIGH RESISTIVITY MATERIAL-BASED PACKAGING ELEMENT FOR ELECTRIC FIELD SENSOR - A high resistivity material-based packaging element for an electric field sensor comprises: a substrate; a first packaging frame fixed to the substrate; and a first packaging cover fixed to the packaging frame; wherein at least one electric field sensor chip is located in an inner cavity formed by the substrate, the first packaging frame, and the first packaging cover, and at least one of the substrate, the first packaging frame, and the first packaging cover is of a high resistivity material having an electrical resistivity equal to or greater than 10 | 03-31-2016 |
20160116517 | VOLTAGE MEASURING DEVICE - The invention concerns a method for measuring the voltage of at least one conductor ( | 04-28-2016 |
20160116518 | REAL-TIME MEASUREMENT OF A SURFACE CHARGE PROFILE OF AN ELECTROSTATIC CHUCK - Methods and apparatus for measurement of a surface charge profile of an electrostatic chuck are provided herein. In some embodiments, an apparatus for measurement of a surface charge profile of an electrostatic chuck includes: an electrostatic charge sensor disposed on a substrate to obtain data indicative of an electrostatic charge on an electrostatic chuck; and a transmitter disposed on the substrate and having an input in communication with an output of the electrostatic charge sensor to transmit the data. | 04-28-2016 |
20160139190 | Sensor Incorporating Multiferroic Materials For Detecting Both Electric and Magnetic Fields - A sensor for detecting both magnetic fields and electric fields can include at least one Sawyer-Tower (ST) circuit that can incorporate a multiferroic capacitor. An odd number of ST circuits coupled together in a ring configuration, so that for each ST circuit, the output of one ST circuit is an input to another of the ST circuits. The multiferroic capacitors can include a multiferroic layer that can be deposed on a substrate. For each multiferroic capacitor, the deposition process can cause an inherent amount of impurities in the multiferroic layer. The number of said odd number of ST circuits to be coupled together is chosen according to the amount of impurities, to “forgive” the impurities. The higher the level of impurities in the multiferroic layers, that more ST circuits that are required in the ring to achieve the same sensor sensitivity. BDFO can be chosen for the multiferroic material. | 05-19-2016 |
20160154042 | STATIC ELECTRICITY DISTRIBUTION MEASURING APPARATUS AND STATIC ELECTRICITY DISTRIBUTION MEASURING METHOD | 06-02-2016 |
20160187403 | ELECTROMETER - An electrometer includes a sensing module and a control module. The sensing module includes a plurality of electrostatic sensing elements and a plurality of second electrodes. The plurality of electrostatic sensing elements are single walled carbon nanotubes or few-walled carbon nanotubes. The plurality of electrostatic sensing elements and the plurality of second electrodes are alternately arranged in a series connection. The control module is coupled to the two ends of the series connection and configured to measure a resistance variation ΔR of the series connection and convert the resistance variation ΔR into a static electricity potential. | 06-30-2016 |
20160187404 | ELECTROMETER - An electrometer includes a sensing module and a control module. The sensing module includes an electrostatic sensing element. The electrostatic sensing element includes two opposite ends. Each end of the electrostatic sensing element is electrically connected to the control module. When an object with electrostatic charge is near but does not touch the electrostatic sensing element, the resistance of the electrostatic sensing element can be changed. The control module electrically connect to the electrostatic sensing element, the control module measures the resistance variation ΔR of the electrostatic sensing element and converts the resistance variation ΔR into the static electricity potential. | 06-30-2016 |
20160187405 | ELECTROSTATIC DISTRIBUTION MEASURING INSTRUMENT - An electrostatic distribution measuring instrument includes a sensing module and a control module. The sensing module includes a plurality of electrostatic sensing elements electrically insulated from each other. The plurality of electrostatic sensing elements is single walled carbon nanotubes or few-walled carbon nanotubes. The control module is coupled to the sensing module and configured to measure a resistance variation ΔR of the sensing module and convert the resistance variation ΔR into a static electricity potential. | 06-30-2016 |
20160195630 | ELECTROSTATIC FIELD SENSOR AND SECURITY SYSTEM IN INTERIOR AND EXTERIOR SPACES | 07-07-2016 |
324458000 | Using modulation-type electrometer | 7 |
20080238434 | Surface voltmeter - In a surface voltmeter ( | 10-02-2008 |
20100156429 | MEMS ELECTROMETER THAT MEASURES AMOUNT OF REPULSION OF ADJACENT BEAMS FROM EACH OTHER FOR STATIC FIELD DETECTION - An apparatus for detecting a static field includes a microelectromechanical systems (MEMS) device having two cantilevered beams of conductive material that are adjacent and substantially parallel to each other. The two beams repel each other in the presence of a static field. At least one sensor detects a respective amount of displacement of the two cantilevered beams from a rest position and determines an amount of repulsion of the two cantilevered beams from each other. | 06-24-2010 |
20110316550 | ION ANALYZING APPARATUS AND ION ANALYZING METHOD - An ion analyzing apparatus includes a sensor; a counter electrode having openings, the counter electrode being positioned so as to substantially surround the sensor; and a bias generating circuit coupled to the sensor, wherein the sensor includes quartz crystal and a pair of electrodes positioned on surface of the quartz crystal, and one of the pair of electrodes is coupled to the bias generating circuit. | 12-29-2011 |
20120119750 | Container for Measuring Cell Potential - A cellular electric potential measuring container includes a container body and an electrode substrate, the electrode substrate being attached to a lower end of the container body so as to form a plurality of wells. The container body is made from resin and comprises a plurality of tubular portions whose upper and lower ends are open, each of the tubular portions comprises in an inner cavity a measurement portion tapered toward the lower end and having a measurement hole at the lower end, and further on an inner wall at least two retaining means retaining the measurement portion. The electrode substrate comprises a substrate body, with a plurality of measurement electrodes and a plurality of reference electrodes being disposed on one surface of the substrate body. The container body is attached to the surface of the substrate body on which the measurement electrodes and the reference electrodes are disposed, such that the measurement electrodes are exposed through the measurement holes. | 05-17-2012 |
20130307553 | POTENTIAL MEASURING DEVICE - There is provided a potential measuring device of non-contact type which can improve measurement sensitivity. A potential measuring device which measures a charged object in a non-contact manner with a sensor includes: a first shutter and a second shutter each having a shutter part provided with an opening and a leaf spring part; a magnet attached to the leaf spring part of each of the first shutter and the second shutter; a yoke on which a coil is disposed, the coil applying an alternating magnetic field to the magnet of each of the first shutter and the second shutter to cause the shutter part to reciprocate via the leaf spring part; and a natural frequency adjusting means for adjusting a natural frequency of at least one of a first shutter system including the first shutter and the magnet and a second shutter system including the second shutter and the magnet. | 11-21-2013 |
20130307554 | POTENTIAL MEASURING DEVICE - A potential measuring device which measures a charged object in a non-contact manner with a sensor may include a first shutter having a first shutter part, which is provided with a first opening which can be positioned at a position opposing the sensor, and leaf spring parts extending from both ends thereof; a second shutter having a second shutter part, which is provided with a second opening which can be positioned at a position opposing the sensor and the first opening, and leaf spring parts extending from both ends thereof; a coil provided so that a direction along a center axis opposes portions of the leaf spring parts; and a magnet provided on each of regions opposing both end sides of the coil in the leaf spring parts extending from the both ends of each of the first shutter part and the second shutter part. | 11-21-2013 |
20140091806 | STATIC-ELECTRICITY-QUANTITY MEASURING APPARATUS AND STATIC-ELECTRICITY- QUANTITY MEASURING METHOD - A static-electricity-quantity measuring apparatus and a static-electricity-quantity measuring method are optimum for a manufacturing site under a difficult-to-measure situation and measure the quantity of static electricity of electronic parts, machine parts, etc. simply with high accuracy. A static-electricity-quantity measuring apparatus of the present invention has: a receiving unit which receives virtual electromagnetic waves generated by vibrations applied to a measured object; a measuring unit which measures at least one of the intensity, frequency, and phase of the virtual electromagnetic waves received by the receiving unit; and a calculating unit which calculates the quantity of static electricity of the measured object based on the measurement result of the measuring unit. | 04-03-2014 |