203 results about "Voltage" patented technology

A medical apparatus includes a medical assist device to process signals to relating biological functions. A first lead is operatively connected to the medical assist device, the first lead having a distal end and a proximal end. A second lead is operatively connected to the medical assist device, the second lead having a distal end and a proximal end. The first electrode is operatively connected to the distal end of the first lead, and a second electrode is operatively connected to the distal end of the second lead. A filter circuit is operatively connected near the distal end of the first lead and the distal end of the second lead. A compensation circuit, operatively connected to the first lead, provides a compensation voltage to enable the filter to effectively block changing magnetic fields induced current in the second lead from passing through the second electrode of the distal end of the second lead.

Systems and methods are disclosed for sensing forces, moments, temperature, inclination, acceleration and other parameters associated with prosthetic limbs. The system is capable of measuring forces in three designated axes, and moments about the same designated axes, for a total of six possible degrees of freedom. The system can be readily fitted onto a conventional prosthetic limb with no, or relatively minor, modification thereto. A plurality of sensor arrays are disposed on a support member, each array including a plurality of strain gauge sensors, each sensor outputting an electrical signal responsive to loading imposed on the support member through the prosthetic limb. Electronic circuitry in communication with the gauges is operative to receive the electrical signals from the strain gauges and provide a signal useful in the form, fit or function of the prosthetic limb. The strain gauges are configured to generate positive and negative (signed) voltages to determine moments, shear forces and off-center loading. The inclinometers may be used to simulate a goiniometer. An unaffected limb electronics package and data collection module are disclosed to achieve an intelligent prosthetic endo component system.

An organic light emitting device includes a display panel which includes a plurality of pixels, a power supply which generates a driving voltage, an overcurrent detector which detects an overcurrent flowing from the power supply to the display panel, and a driving voltage blocking unit which blocks the driving voltage to the plurality of pixels based on an output signal of the overcurrent detector.

A quad photoreceiver includes a low capacitance quad InGaAs p-i-n photodiode structure formed on an InP (100) substrate. The photodiode includes a substrate providing a buffer layer having a metal contact on its bottom portion serving as a common cathode for receiving a bias voltage, and successive layers deposited on its top portion, the first layer being drift layer, the second being an absorption layer, the third being a cap layer divided into four quarter pie shaped sections spaced apart, with metal contacts being deposited on outermost top portions of each section to provide output terminals, the top portions being active regions for detecting light. Four transimpedance amplifiers have input terminals electrically connected to individual output terminals of each p-i-n photodiode.

A transconductance amplifier mirror circuit is connected to an electrode for sensing the capacitance of the electrode with reference to ground, or the capacitance between the electrode and another electrode. A voltage level change is produced on the electrode connected to the transconductance amplifier mirror circuit to cause the transconductance amplifier mirror circuit to supply charges to or drain charges from a charge calculation circuit. The charge amount variation is converted to a signal for calculating the sensed capacitance.

The invention discloses a cluster computing method for an online emergency control strategy for the transient safety stability of power system, belonging to the technical field of emergency control of the power system. Computing of the online emergency control strategy is divided into the stages that the emergency control strategy for transient power-angle stability is first computed; and based on searched optimization control strategy, voltage and frequency of the emergency control strategy for the transient safety stability are computed. According to the above technical scheme, the online emergency-control optimization strategy for the transient safety stability of a large power grid can be rapidly searched.

A self-adaptive optical system based on voltage decoupling controlled multiple wave-front correctors. The self-adaptive optical system based on the voltage decoupling controlled multiple wave-front correctors comprises a plurality of wave-front correctors, a spectroscope, a wave-front sensor and a wave-front processing machine; the plurality of wave-front correctors are distributed in an optical path in a series connection mode; the wave-front sensor and the wave-front corrector with the highest accuracy satisfy a conjugated relation; the wave-front corrector with the highest accuracy directly performs high-accuracy correction on wave aberrations through a slope method, other wave-front correctors perform voltage decoupling separation on low order wave-front aberrations according to a correction voltage decoupling algorithm of the wave-front corrector which is provided with the highest accuracy, perform type mold correction on specific aberration and directly perform correction on all aberrations through the slope method, finally the correction aberrations of every wave-front corrector are overlayed to achieve high accuracy correction of the overall aberrations. The self-adaptive optical system based on the voltage decoupling controlled multiple wave-front correctors is mainly applied to a light beam purification self-adaptive optical system and the optical fields which have severe aberration change and need a plurality of self-adaptive system combined correction such as correction of atmosphere turbulence and thermal blooming.

The invention provides a method for dynamically calibrating a distributed optical fiber temperature sensor system. The method comprises the following steps: (1) eliminating the output voltage deviation of the detecting system; (2) eliminating the effect caused by instability of the amplification factor of the detecting system by a standard optical fiber ring; (3) dividing the corrected anti-Stokes signal by the Stokes signal to obtain the accurate calculation formula for solving the temperature to be measured T of the optical fiber temperature sensor in combination with the theoretical formula; and (4) carrying out linear fitting on the formula obtained in the step (3), correcting the formula by dynamic calibration in real time and then calculating the temperature, thus obtaining the accurate information of the temperature to be measured. Higher temperature precision of the distributed optical fiber temperature sensor system can be ensured by adopting the method.

The invention provides a tricomponent vibration calibrating device which comprises a tricomponent standard vibration table, wherein the tricomponent standard vibration table comprises a base, an electromagnetic vibration table in an X direction, an electromagnetic vibration table in a Y direction, an electromagnetic vibration table in a Z direction and a three-dimensional vibration platform; eachaxial vibration table is equipped with a laser vibration meter; vibration signals acquired by the laser vibration meters are input into a data acquisition unit; each axial vibration table is providedwith a standard transducer; output signals of the standard transducers are input into a feedback controller; the other input end of the feedback controller is connected with a multi-channel signal generator; after output signals of the feedback controller pass through a power amplifier group, each axial vibration table is driven to move; the multi-channel signal generator is controlled by a processor; output voltages of a calibrated three-dimensional vibration measuring transducer placed on the three-dimensional vibration platform are input into the data acquisition unit which is connected with the processor; and a sensitivity matrix of the calibrated three-dimensional vibration measuring transducer is calibrated by the processor. The tricomponent vibration calibrating device has the advantages that three measuring shafts of the three-dimensional vibration measuring transducer can be excited at the same time, and then the sensitivity matrix reflecting the coupling relations among dimensions of the three-dimensional vibration measuring transducer is acquired.

A rechargeable hearing aid comprises a battery charger and a hearing aid body. The battery charger presents an easily carried case, which is provided with a receiving groove and a battery chamber, which contains a dry battery for power supply. The receiving groove can receive the hearing aid body and is provided with connection terminals at two sides of the inner groove for flexibly locking the hearing aid body. A cover covers on the receiving groove and is pivotally connected to the bather charger by a hinge element, which is further connected to a switch, such that when the cover is in the position of OFF, the battery can start recharging right away, and be quickly completed with micro-voltage.

The present invention relates to a method of treating or improving rheumatism and pain caused by rheumatism, tumor, and spinal damage of mammalian animals by a non-pharmacological method. Extremely low AC electric field with DC electric field overlapped is exposed to a whole or a part of mammalian animals with electrodes in a non-contact state. In the exposure of the above mentioned electric field, said electric field is exposed for a certain period of time a day, repeating this everyday or once a week. Further, as required, frequency of the electric field, voltage to be applied, exposure time, and the like are controlled.

The invention discloses a pole-side conductor sag observation method based on a total station instrument, which is suitable for performing conductor sag observation at the external side of pole span of an electric transmission line with the total station instrument. The total station instrument is disposed at the external side of the pole span to respectively detect the altitude differences of a conductor wire at mount points on a first pole tower and a second pole tower by means of a prism-free function; by means of a planar triangle formed by the observation point and projections of the mount points on the two pole towers, first planar distance and second planar distance are measured; according to geometric principles, projective triangle interior angles and pole span length are calculated and further the position of midpoint of the pole span is determined; the length from the observation point to the midpoint of the pole span is calculated and is multiplied by the tangent value of elevation angle of the total station instrument to calculate the altitude difference of the conductor wire at the midpoint of the pole span; the average value of the first and the second altitude differences minus the altitude difference of the conductor wire at the midpoint of the pole span is finally calculated to obtain the conductor sag. Compared with a conventional conductor sag measurement method, the method allows optional site selection, has high precision and is simple in operations, and can be used in the fields of ultrahigh-voltage transmission line construction, overhead transmission line engineering construction, and measurement and control technologies and instruments and the like.

The invention discloses an intelligent street lamp control system. The intelligent street lamp control system includes street lamp control terminals, street lamp monitoring sub-stations and a street lamp management center; the street lamp control terminals acquire the voltage, current and power information of street lamp nodes and upload the data to the street lamp monitoring sub-stations; the street lamp control terminals receive commands issued from the street lamp monitoring sub-stations and execute operation so as to realize switching control and brightness adjustment of street lamps; the street lamp control terminals analyze and process received data packets, and send and receive data through radio frequency transmission modules; and the street lamp monitoring sub-stations maintain the node information of all street lamp control terminals on roads where the street lamp monitoring sub-stations are located, and transmit corresponding data to the street lamp management center. According to the intelligent street lamp control system of the invention, a GPRS public wireless communication technology and short-distance wireless communication technology-combined scheme is adopted, and the advantages of the GPRS public wireless communication technology and the short-distance wireless communication technology can be combined, and therefore, the problem of high cost can be solved, the complexity of the system is reduced, and the intelligent street lamp control system is practical, is convenient to manage, assist in saving energy and can realize intelligent control.

There is provided an AGC circuit that has a very small offset voltage and is easy for integration, without using any of external capacities. For that reason, a variable gain amplifying circuit (GCA1) which has a gain controlled by a gain control signal, and whose output DC offset is controlled by an offset compensation signal, an A/D conversion circuit (AD1) for A/D converting an output signal of this variable gain amplifying circuit (GCA1), a level detection circuit (Det1) for performing peak detection of an output signal of this A/D conversion circuit (AD1) to thereby detect an amplitude level, a gain control circuit (Gctrl1) for outputting a gain control signal according to an output signal of this level detection circuit (Det1), an offset detection circuit (Det2) provided with a lowpass filter for taking out a DC component from the output signal of the A/D conversion circuit (AD1), and a D/A conversion circuit (DA1) for D/A converting an output signal of the offset detection circuit (Det2) to thereby output the offset compensation signal are provided.

An apparatus for controlling an operation of compressors includes a single microcomputer for calculating stroke estimate values of multiple compressors based on voltage and current values applied to the multiple compressors, and generating a plurality of switching control signals for independently controlling a voltage applied to the multiple compressors based on the calculated stroke estimate values and pre-set stroke reference values; and switching devices each installed in the multiple compressors, for independently controlling the voltage applied to the multiple compressors according to the plurality of switching control signals. Since the reciprocating compressors are controlled by a single apparatus, costs and power consumption can be reduced.

The invention discloses a consumable electrode gas shielded arc deposition three-dimensional printing method. The method comprises the following steps: (1) a metal component three-dimensional digital model is designed in three-dimensional software; three-dimensional printing system software is adopted to slice the three-dimensional digital model to generate multiple two-dimensional data piece layers; and a processing path is formed through analysis; (2) single layer of metal components are molded through deposition by a welding gun according to the processing path; and in the welding gun, the fuse diameter is 0.08-1.5 mm, the welding voltage is 14-20 V, the welding current is 2-20 A, the wire walking speed is 1-12 mm.s-1, the wire feeding speed is 0.5-15 mm.s-1, and the shielded gas pressure is 2-5 Mpa; and (3) after deposition molding of the single layer of metal components, a three-dimensional control platform automatically adjusts a gap between the welding gun and a newest generated surface; and the three-dimensional deposition molding of the metal components is finished after multiple times of circulation. The three-dimensional metal components, molded by the method through deposition, improve the shape precision and the surface quality, and improve the metallographic structures and the uniformity; and in addition, the method has the advantages of low cost and high deposition rate.

A half-open position holding apparatus for a vehicle opening and closing member includes an opening and closing member supported in a vehicle body to be openable and closable and has an opening and closing member driving unit that has a motor and a electromagnetic clutch that can put a power transmission path connecting the motor and the opening and closing member in a connected state and in a disconnected state, for driving the opening and closing member in opening and closing directions thereof, and an in-vehicle battery serving as a power source for the electromagnetic clutch. The apparatus includes a controller for controlling the opening and closing member driving unit, that, when the opening and closing member is held at a half-open position between a fully-closed position and a fully-opened position, holds the opening and closing member at the half-open position by stopping the motor, putting the electromagnetic clutch in a connected state, and controlling the electromagnetic clutch to a half-open position holding connection state such that a voltage applied to the electromagnetic clutch becomes a predetermined voltage lower than an output voltage of the in-vehicle battery.

The invention provides a stripping gold component which could remove gold from substrate, comprising: a stripping gold chemical compound; and a assistant conductive compound wherein said stripping gold chemical compound bonds with gold to form covalent bond to strip gold from said substrate, said assistant conductive chemical compound helps the electric conduction and decreases the voltage, said substrate would not be damaged after stripping gold from said substrate, and the stripping gold component is cyanide free.

An aminostyryl compound represented by Formula 1:

The organic light emitting device using the aminostyryl compound exhibits low driving voltage and improved brightness, efficiency, and color purity.

A wind power station comprises a wind rotor; a transmission mechanically coupled to the wind rotor; an asynchronous generator having a generator rotor mechanically coupled to the transmission, and a generator stator electrically coupled to a power grid; and a protection unit protecting the generator and the transmission against accidental breakdowns of an alternating voltage provided by the power grid. The Protection unit includes at least one choke electrically arranged between the power grid and the generator stator, and a synchronous electrical machine electrically coupled to the choke.