111results about How to "Reduce electrical noise" patented technology

A system for managing impacting effects in an electronic system due to the presence of wireless energy transfer oscillating electromagnetic fields includes a controller, a field sensing component communicatively coupled to the controller and configured to measure at least one oscillating energy field and an adjustable filter element communicatively coupled to the controller, wherein the adjustable filter may be adjusted by the controller based, at least in part, on measurements of the field sensing component to reduce effects of the at least one oscillating energy field on the sensing component.

A GM type displacer has an elastomer "O" ring at the warm end to absorb impact energy when the displacer reaches the bottom of the stroke before it would hit the cylinder end cap. When the displacer reaches the top of its stroke, before the displacer would hit the internal mechanism of the expander, another elastomer "O" ring absorbs the kinetic energy of the displacer. Both absorbers are at or near ambient temperature.

Systems and methods for actively balancing battery cells are disclosed. In one example, a charge is supplied to different battery cells at different times during a battery discharge cycle. The method may reduce instantaneous current draw within a battery pack.

Microbolometer infrared detector elements that may be formed and implemented by varying type / s of precursors used to form amorphous silicon-based microbolometer membrane material / s and / or by varying composition of the final amorphous silicon-based microbolometer membrane material / s (e.g., by adjusting alloy composition) to vary the material properties such as activation energy and carrier mobility. The amorphous silicon-based microbolometer membrane material / s materials may include varying amounts of one or more additional and optional materials, including hydrogen, fluorine, germanium, n-type dopants and p-type dopants.

A particle sensor operates in ambient air at an ambient air temperature and includes (a) a light source projecting a beam of light, (b) a light trap aligned with the beam of light and comprising at least one light-energy-absorbing surface at a surface temperature, (c) a nozzle flowing particle-entraining air through the beam of light, and (d) an opto-electrical system detecting light scattered by a particle. In the improvement, the sensor includes a cooling apparatus in heat transfer relationship to the surface and absorbing heat from such surface. The surface temperature is maintained at or below a value which substantially eliminates thermally-induced electro-optical disturbances in the sensor. A new method for reducing electrical noise detected by an opto-electrical system in the particle sensor includes providing a cooling apparatus in heat transfer relationship to the surface and transferring heat from the surface to the cooling apparatus at a rate which limits the surface temperature to a value which substantially eliminates thermally-induced electro-optical disturbances in the sensor.

Microbolometer infrared detector elements that may be formed and implemented by varying type / s of precursors used to form amorphous silicon-based microbolometer membrane material / s and / or by varying composition of the final amorphous silicon-based microbolometer membrane material / s (e.g., by adjusting alloy composition) to vary the material properties such as activation energy and carrier mobility. The amorphous silicon-based microbolometer membrane material / s materials may include varying amounts of one or more additional and optional materials, including hydrogen, fluorine, germanium, n-type dopants and p-type dopants.

An electronic control module to monitor and control various functions and conditions of a mower, and to display information about such functions and conditions to the operator of the mower. Information is accepted from a variety of switches and sensors on the various components of the mower, and information about certain mower functions can be displayed by means of LEDs or a LCD on a display module, which may be integrated with the central control module.

This patent discloses electric motor assemblies for increasing vibratory power with less noise and massage assemblies using the same.

A heart assist system having an implantable pump conveying blood between two vascular locations and an extracorporeal system providing power and control signals to the pump. The system also includes a communication link having an implantable portion coupled to the implantable pump, an extracorporeal portion coupled to the extracorporeal system and an isolation portion between the implantable portion and the extracorporeal portion that minimizes the transmission of movement and forces from the extracorporeal portion to the implantable portion.

A kind of an energy-saving and endurable auto electric water pump, including fixed support, electrical connector, rear cover of motor, controller assembly, motor assembly, isolation sleeve, impeller assembly and pump head housing, and the said fixed support and said electrical connector are set on the outer end surface of the rear cover of the motor, the controller assembly is mounted on the inner end face of the rear cover of the motor, and rear cover of the motor is mounted together with the motor assembly, the said impeller assembly is installed together with the isolation sleeve through rotating axis, while the water-cooling mechanism is set on the controller assembly. In the present invention, the water cooling mechanism is set on the controller of the electric water pump, which can effectively reduce the temperature of the controller and improve the service life of the pump.

A BGA semiconductor device for high-speed operation and high pin counts has a base which is constituted by a core layer formed of wiring boards and surface layers provided on both sides of the core layer, and a semiconductor element mounted on the base. Through holes in a signal region of the core layer are disposed in an optimum through hole pattern in which power through holes and ground through holes are disposed adjacent to signal through holes.

Systems and methods for actively balancing battery cells are disclosed. In one example, a charge is supplied to different battery cells at different times during a battery discharge cycle. The method may reduce instantaneous current draw within a battery pack.

A fuel supply apparatus arranged to control supply of fuel includes a motor-driven fuel pump to be placed in a fuel tank, a mounting plate for closing a mounting hole of the fuel tank, a reserve cup that houses the fuel pump, and a pump controller adapted to control power supply to the fuel pump, and the pump controller is placed below the mounting plate and above the fuel pump.

Exemplary embodiments of the present invention relate to a power line communication (PLC) system. For example, the PLC system may include a PLC server configured to provide electrical power and electronic communications through a PLC bus to a number of electronic devices, such as an instrument cluster, infotainment interface, rear-seat entertainment console, aftermarket accessories, and the like. The PLC system may also include a power system that may be coupled to an electrical grid for charging a battery associated with one or more of the electronic devices. The power system may be communicatively coupled to the PLC bus, enabling the devices coupled to the PLC bus to communicate with a service provider through the electrical grid. The communications between the devices coupled to the PLC bus and remote devices coupled through the electrical grid may be conducted using a common communication protocol.

To provide a magnetic reading head that features high resolution and low noise, and that can support a hard disk with terabit-level surface recording density. A current is caused to flow from a pinned layer with its magnetization direction fixed by an antiferro magnetic material, to a non-magnetic thin wire having a portion affected by an external magnetic field and a portion not affected by the external magnetic field, so that spin polarized electrons are accumulated in the non-magnetic thin wire. A distance between voltage terminals of a voltmeter is set to less than the spin diffusion length of the non-magnetic thin wire. A change in the external magnetic field modulates some of the accumulated spin polarized electron, but does not others. Accordingly, an electrical potential difference depending on the external magnetic field is generated between the both end surfaces of the non-magnetic thin wire, and measured with the voltmeter.

A circuit board is divided into two portions: a flexible printed circuit board; and a printed circuit board. On the flexible circuit board, movements whose layouts on the flexible circuit board are changed based on a design change in a dial plate due to a model change in a vehicle, light emitting diodes, a connector, a buzzer, and a changing-over switch are mounted. On the printed circuit board, a controller that radiates electrical noise during its operation is mounted. This enables a countermeasure for radiating of the electrical noise from the controller to be completed within the printed circuit board. This also enables a circuit design of the flexible printed circuit board to be easily performed. Man power for designing a combination meter can be thereby decreased; further, the combination meter capable of restricting generation of the electrical noise is achieved.

The invention discloses a micro-electromechanical system piezoelectric transducer and a manufacturing method thereof, in particular an array piezoelectric transducer and a manufacturing method, and belongs to the micro-electromechanical system field. The transducer adopts array design and is composed of at least two array elements. The wafer-level electrical series connection or parallel connection between the array elements is realized by a micro-electromechanical system (MEMS) process compatible with the semiconductor process, but at least one electrical series connection is provided; Semiconductor MEMS process can effectively control the parasitic capacitance generated by electrical series and parallel connection, thus effectively improve the sensitivity. The invention improves the sensitivity of the transducer through the wafer-level electric series and parallel connection between the array elements. Compared with the traditional piezoelectric ceramic transducer, the parasitic capacitance caused by the following circuit string and parallel connection is avoided. A wafer-level array MEMS transducer is proposed. The array transducer can be connected in series with different arrayelements according to the needs, so that the sensitivity of the transducer can be defined independently. The transducer also has the advantages of high signal-to-noise ratio, low cost, low electricalnoise and high signal-to-noise ratio.

The invention discloses a satellite ground micro-vibration test system. The satellite ground micro-vibration test system comprises a high-sensitivity sensor used for extracting vibration signals near a disturbance source or a load, an anti-aliasing filter used for performing anti-aliasing filtering on the vibration signals extracted by the high-sensitivity sensor to form piezoelectric signals, a high-modulus conversion rate acquirer used for generating the piezoelectric signals into digital signals and a high-precision controller used for controlling display, storage and analysis of the digital signals. According to the invention, the high-sensitivity sensor realizes small-magnitude acquisition of the vibration signals, digital signals are generated through a high-precision data acquisition card after the vibration signals are subjected to the anti-aliasing filtering, and subsequent process is performed to provide efficient input for the subsequent satellite vibration reduction or vibration isolation and environmental test and also realize verification of vibration reduction or vibration isolation performance. Therefore, the satellite ground micro-vibration test system, disclosed by the invention, has the advantages of satisfying demands on acquisition and analysis of micro-vibration signals and being of great importance in improving control precision and stability of a satellite platform.

A connector assembly includes a housing and contacts. The housing extends between mating and mounting interfaces. The mating and mounting interfaces have contact openings in a noise-reducing contact pattern. The contact openings in the pattern are arranged in pairs along respective contact lines. The contact lines of adjacent pairs are transverse to one another. The contacts extend through the contact openings and are arranged in the noise-reducing contact pattern through the housing between the mating and mounting interfaces to reduce at least one of electric noise and cross-talk in signals communicated by the contacts.

The invention relates to a high-sensitivity diaphragm type photoacoustic spectrum sensor based on self-mixing. The high-sensitivity diaphragm type photoacoustic spectrum sensor comprises a sensing light source, an excitation light source, a first coupler, a photoacoustic cavity and a signal processing circuit unit, wherein the sensing light source and the excitation light source emit laser which is led into the photoacoustic cavity through an optical fiber by the first coupler; the photoacoustic cavity comprises a ceramic bushing and a high-sensitivity diaphragm; the laser light source emits the laser to excite gas molecules to generate a photoacoustic signal and enable the high-sensitivity diaphragm to vibrate; the sensing light source serving as a detection light signal is incident into the surface of the high-sensitivity diaphragm and then is reflected back to the end face of the optical fiber; reflected light is output through the optical fiber into a cavity of the sensing light source to generate a self-mixing photoacoustic spectrum signal; the self-mixing photoacoustic spectrum signal is processed through the signal processing circuit unit, so that the vibration frequency and the amplitude of the high-sensitivity diaphragm can be obtained, and the concentration information and the pressure information of the gas can be further obtained. By the adoption of a self-mixing interferential sensing technology, the high-sensitivity diaphragm type photoacoustic spectrum sensor has the advantages that the structure is simple and reliable, and the remote distributed gas detection can be realized.

A low profile semiconductor package is disclosed including at least first and second stacked semiconductor die mounted to a substrate. The first semiconductor die may be electrically coupled to the substrate with a plurality of stitches in a forward ball bonding process. The second semiconductor die may in turn be electrically coupled to the first semiconductor die using a second set of stitches bonded between the die bond pads of the first and second semiconductor die. The second set of stitches may each include a lead end having a stitch ball that is bonded to the bond pads of the second semiconductor die. The tail end of each stitch in the second set of stitches may be wedge bonded directly to lead end of a stitch in the first set of stitches.

The invention discloses methods and systems for conductively coupling the body and more specifically the bare feet of an animal or human body to the earth in situations where conductive contact with the earth is otherwise impossible, such as inside a home or other building or in a bed. Various embodiments of the invention allow earth's mobile surface charge of free electrons to flow from the earth to the body, (similar to that which occurs naturally when an animal or human is standing barefoot on the earth), for the purpose of neutralizing excess or residual immune system-produced reactive oxygen species free radicals that cause physiological deficiencies and disturbances in the body such as acute or chronic inflammation.

The stimulating cluster micro electrode array capable of being implanted into nerve system of human body belongs to the field of medical prothesis. The present invention includes stimulating metal wire micro electrode, supporting metal wire micro electrode, stimulating metal wire micro electrode cluster, stimulating metal wire micro electrode cluster array, and micro electrode substrate. Several stimulating metal wire micro electrodes are adhered onto the outer wall of one supporting metal wire micro electrode to constitute one stimulating metal wire micro electrode cluster; several stimulating metal wire micro electrode clusters are fixed onto one micro electrode substrate to constitute one stimulating metal wire micro electrode cluster array; and lead wires are led out from the micro electrode substrate for connection with outer equipment. The electrodes are made with biocompatible metal material. The present invention is used in stimulating nerve system in limited space.

A system and method for measuring a voltage differential in a current-carrying pipe using a propulsion vehicle. The system may be adapted for use with a pipeline pig or other propulsion device, which is configured to determine the electric current in a pipeline with nominal noise while the apparatus is moving. One aspect of the present invention is a pig which is outfitted with electrical contacts. These electrical contacts may optionally consist of rotating steel brushes and / or rotating steel knives. The pig includes data logging capabilities which may record location and voltage data. A pig according to the present invention optionally may include electromechanical devices which reduce electrical noise.

A low profile semiconductor package is disclosed including at least first and second stacked semiconductor die mounted to a substrate. The first semiconductor die may be electrically coupled to the substrate with a plurality of stitches in a forward ball bonding process. The second semiconductor die may in turn be electrically coupled to the first semiconductor die using a second set of stitches bonded between the die bond pads of the first and second semiconductor die. The second set of stitches may each include a lead end having a stitch ball that is bonded to the bond pads of the second semiconductor die. The tail end of each stitch in the second set of stitches may be wedge bonded directly to lead end of a stitch in the first set of stitches.

A driving circuit for an active-matrix liquid-crystal display short-circuits at least two of the signal lines in the matrix at times of transitions of signal-line potentials in the matrix. Charge stored in the parasitic capacitances of the signal lines is thereby recycled from one signal line to another, reducing the current consumption of the driving circuit. When alternating-current driving is employed, current consumption can also be reduced by reducing the frequency with which signal lines are driven from one side of a center potential to the other side.

The invention provides a microgyroscope driving and detecting device and method based on a digitization embedded system. The device comprises an embedded data unit, a simulation circuit unit and a wireless module. The embedded data unit is connected with the simulation circuit unit, the simulation circuit unit is connected with a bulk-acoustic-wave solid fluctuation microgyroscope, and the wireless module is integrated on the embedded data unit; a driving signal is sent to the simulation circuit unit through the embedded data unit and then sent to the bulk-acoustic-wave solid fluctuation microgyroscope, a signal of the bulk-acoustic-wave solid fluctuation microgyroscope is output to the simulation circuit unit, and then is preprocessed through the simulation circuit unit and output to the embedded data unit, and signal processing is carried out; the wireless module is responsible for outputting a control instruction between the device and the outside and a final signal. By means of the microgyroscope driving and detecting device and method based on the digitization embedded system, a gyroscope signal can be effectively detected and output, the accuracy is high, and the stability is good.