149 results about "Equipotential" patented technology

Method and apparatus for providing sensor guard for data monitoring and detection system having a sensor for detecting one or more glucose levels, the sensor including a work electrode disposed on a base material, a reference electrode disposed on the base material, and a guard electrode disposed on the base material, where the guard electrode is maintained substantially at equipotential to the work electrode, and a transmitter operatively coupled to the work electrode and the reference electrode of the sensor for receiving said detected glucose levels, where the transmitter is further configured to transmit a respective signal corresponding to each of the detected glucose levels using a data transmission protocol including wireless data transmission protocols, to a receiver which is configured to receive the transmitted signals corresponding to said detected glucose levels is provided. The method and apparatus may also include insulin administration unit such as an insulin pump configured to be in data communication with the transmitter and/or the receiver for administering an appropriate insulin dosage based on the measured glucose levels.

An electrostatic trap such as an orbitrap is disclosed, with an electrode structure. An electrostatic trapping field of the form U′(r,φ,z) is generated to trap ions within the trap so that they undergo isochronous oscillations. The trapping field U′(r, φ,z) is the result of a perturbation W to an ideal field U(r, φ,z) which, for example, is hyperlogarithmic in the case of an orbitrap. The perturbation W may be introduced in various ways, such as by distorting the geometry of the trap so that it no longer follows an equipotential of the ideal field U(r, φ,z), or by adding a distortion field (either electric or magnetic). The magnitude of the perturbation is such that at least some of the trapped ions have an absolute phase spread of more than zero but less than about 2π radians over an ion detection period T_m.

The invention provides an equipotential closed-loop electrical energy meter testing device, which includes a program controlled three phase power source, a three phase multifunction standard meter, a meter hanging rack, an error calculation/display apparatus, a control system equipped with control software, and a precision current mutual inductor CT insulating the current of the electric energy meter connected to the meter hanging rack, wherein, the program controlled three phase power source outputs voltage to the three phase multifunction standard meter and the electrical energy meter to be tested connected to the meter hanging rack; the program controlled three phase power source outputs current to the three phase multifunction standard meter and the electrical energy meter to be tested through the precision current mutual inductor CT; the error calculation/display apparatus is connected with the three phase multifunction standard meter and the electrical energy meter to be tested; the control system is connected with the program controlled three phase power source, the three phase multifunction standard meter, the electrical energy meter to be tested and the error calculation/display apparatus. The equipotential closed-loop electrical energy meter testing device provided by the invention can verify more electrical energy meters at one time, thereby improving work efficiency of the measurement department and reducing error.

The invention relates to an MMC-HVDC direct-current short-circuit fault ride-through method based on the direct-current bus bipolar equipotential, and belongs to a direct-current fault protection method of a flexible direct-current power transmission system. According to the method, the double-pole potential of the MMC direct-current side bus is controlled to be approximately equal, so that the short-circuit fault current of the direct-current side is close to zero, and the direct-current bipolar short-circuit fault ride-through can be realized under the condition that the MMC is controllable. The basic principle is that after the direct-current short-circuit current is detected, a fault operation mode is adopted, and on and off states of upper and lower three-phase bridge arms of the MMC three-phase are selected according to the polarity of the power grid voltage, the MMC circuit topology is equivalent to the chain type star topology, and the three-phase conducted upper and lower bridge arm voltage is controlled to withstand the voltage of the power grid, and the double-pole electric potential of the direct-current bus is approximately equal, the direct-current side short-circuit fault current is close to zero. An alternating-current circuit breaker is not needed, and the capacitor voltage balance of the MMC sub-module is maintained during the fault ride-through period, and after the fault is eliminated, the power transmission can be rapidly restored.

The invention relates to a flexible array pressure measurement sensor based on piezoresistive effect. The sensor herein includes a row control circuit, a touch element sensing unit, a column control circuit, a same direction amplifier circuit, a filter circuit, a micro-control circuit and a control communication port which are successively connected, and also includes an equipotential shielding circuit. The row control circuit, the equipotential shielding circuit, and the column control circuit are connected to the micro-control circuit. The invention also discloses a measurement method. The method herein includes the following steps: representing the forces at different positions in the touch element sensing unit with variations of different resistances, a measurement point switching circuit selecting to connect different sensitive units to a signal modulation circuit through a row and column simulation circuit, converting the variation of the resistances of the sensitive units to voltages, and obtaining a pressure by calibrating the corresponding relationship between the voltages and voltages. According to the invention, the sensor and the measurement method herein, based on theplan for distributing the sensitive units in rows and columns, can measure the distributed force on the surface with a density of 22 point/cm<2>, and overcome the low density of pressure measurement sensors at home and abroad and too slow detection velocity.

The invention discloses a method for improving breakdown voltage of LDMOS devices, in the process of a front-segment preparation grid structure by adopting a conventional method, a grid structure is arranged above the area of an LDMOS device channel, is extended above a high-voltage drifting injection area and is separated from a field oxide area of the high-voltage drifting injection area; in the rear-segment process, a dielectric layer is sedimentated firstly, and then a conductor layer is sedimentated, and then the dielectric layer and the conductor layer are etched, the dielectric layer and the conductor layer above the high-voltage drifting injection area are kept to form a suspending grid electrode electric-conduction equipotential body, one end of the equipotential body is arranged on the field oxide area in the high-voltage drifting injection area, and the other end is arranged above the grid structure and between one side of a channel area and one side of a beak part of the field oxide area in the high-voltage drifting injection area. The method can be integrated in the PIP, MIP or RPOLY process and can be integrated in a metal connecting line process. The method in the invention can obviously improve the breakdown voltage of the LDMOS devices.

An array substrate for use in an X-ray sensing device is fabricated using an etching stopper that enables good control of the etching process and that prevents over-etch of drain electrodes and second capacitor electrodes while forming contact holes and a cutting furrow. The etching stopper is located in a tiling portion that is utilized for tiling substrates to form a large-sized X-ray detector. During fabrication, gate lines can have gate-protruded portions located near the etching stopper, and the etching stopper can have stopper-protruded portions near the gate lines. The stopper-protruded portions electrically connect to the gate-protruded portions through gate line contact holes such that the etching stopper and the gate lines have equipotentials. This can reduce static electricity damage.

The invention discloses an AC high voltage live line work shielding thermal insulation suit, belonging to the live line work shielding suit. A cap, a coat and trousers are connected together to form Siamese clothes, two gloves are connected with the cuffs of the coat of the Siamese clothes through electric conductors, conductive socks are connected with the trousers bottoms of the trousers of the Siamese clothes through electric conductors; each part of the shielding thermal insulation suit adopts four-layer structure, the outermost layer is conductive cloth, the second layer is flame-resistant cloth, the third layer is carbon fiber thermal insulation mat, the innermost layer is lining cloth; and the second layer flame-resistant cloth and the third layer carbon fiber thermal insulation mat compose a thermal insulation flame-resistant layer. The beneficial effect of the invention is as follows: the shielding thermal insulation suit can protect people from high voltage electric field and current and can protect people from a high temperature of about 200 DEG C. Therefore, the suit can meet the working demands of electrified lead-repairing and other equipotential on the high voltage electric power line of the rate capacity lead.

The invention is a multi-dimension chromatogram, electrophoresis separation and detecting system based on array capillary equipotential focus. The system integrates the reverse light phase chromatogram and capillary pipe equipotential focus, the first dimension is the capillary pipe reverse chromatogram carrying high efficient separation to the complex protein mixture, and fraction separated flows into the second dimension-capillary pipe equipotential focus to be separated with higher efficiency and high flux quickly. Compared with single-channel multi-dimension chromatogram system, the design of the array is more proper to the analysis of complex sample with large scale, and the peak capacity of the two-dimension system can be upgraded further. It is excellent at aspect of sample condensing and low rich degree protein detection, and the CIEF can be connected with the mass spectrum online to carry on sample identification.

In order to provide, as a lighting means for a pixel including a driving TFT and an EL element, a driving device of a light emitting display panel which can dissolve respective technical problems which occur in cases where respective constant voltage driving and constant current driving techiniques are adopted, a light emitting power holding capacitor (C2) is connected in series to the driving TFT (Tr2) and the EL element (E1). A diode (D1) for charging electrical charges in the capacitor (C2) and a switching element (SW2) for supplying current to the diode (D1) are provided. By an ON operation of the switching element (SW2) both ends of the capacitor (C2) is subjected to a charge operation so as to become equipotentials. By an OFF operation of the switching element (SW2), driving current flows in the EL element (E1) via the driving TFT (Tr2). The amount of current flowing in the EL element (E1) is controlled by the repeat frequency of ON/OFF of the switching element (SW2).

A voltage sensor includes an insulator with mutually insulated electrodes embedded therein. The electrodes are coaxial and cylindrical and overlap axially along part of their lengths. They are mutually staggered and control the surfaces of electric equipotential such that there is a substantially homogeneous electric field outside the insulator and a substantially homogeneous but higher field within a sensing cavity within the insulator. A field sensor is arranged within the sensing cavity to locally measure the field. This design allows for the production of compact voltage sensors for high voltage applications.

The present invention relates to a static electricity prevention type liquid crystal display panel for preventing static electricity flowing in through a pad part. A static electricity prevention type liquid crystal display panel according to an embodiment of the present invention includes a picture display part having a plurality of liquid crystal cells; a signal pad part applying a drive signal to be inputted to signal lines of the picture display part, and wherein the signal pad part includes a plurality of pads connected to the signal lines; and a static electricity prevention circuit having a thin film transistor with a floating gate for connecting the pad with a shorting bar by a static electricity flowing into the pad for the pad to form an equipotential with respect to the static electricity.

The invention provides an IGBT chip and a preparation method thereof. The IGBT chip comprises a chip front face and a chip back face. The chip front face comprises a cell area, a gate area, an equipotential ring area and a terminal structure area. The cell area comprises a plurality of mutually parallel cells. Each of the cells comprises an emitter electrode. The chip back face comprises a collector region, and a local minority injection efficiency control area is arranged in at least one corresponding collector area under the emitter electrode, a corresponding collector area under the gate area, a corresponding collector area under the equipotential ring area and/or a corresponding collector area under the terminal structure area. The local minority injection efficiency control area can control the minority injection efficiency in the area. Through the IGBT chip provided by the invention, the contradictory relationship between conduction loss and turn-off loss can be alleviated, and the reduction of the turn-off loss of the IGBT chip as far as possible in the condition of not increasing the conduction loss is realized.

The present invention relates to a bidirectional IGBT device and a manufacturing method thereof, and belongs to the power semiconductor device technology field. According to the present invention, by introducing an electrode equipotential with a metal electrode and a dielectric layer at the bottom and the side surface of a gate electrode in a trench in the right backside of the device, and on the condition of not influencing the threshold voltage and the conduction of the IGBT device, the symmetrical forward and reverse characteristics are realized, the forward and reverse switching speed, a short circuit safe working region and a breakdown voltage of the bidirectional IGBT device are improved, the switching loss and the saturation current density of the device are reduced, the carrier concentration distribution of a whole N-type drift region, the compromise of the forward conduction voltage drop and the switching loss and the concentration of an electric field at the bottom of the trench are improved, and further the reliability of the device is improved. The bidirectional IGBT device manufacturing method provided by the present invention does not need the additional process steps, and is compatible with a conventional bidirectional IGBT manufacturing method.

The invention discloses an equipotential head suspension micropressure drip irrigation equipment, comprising a main tube, a branch tube, a hair canal, a suspension micro path emitter, a water tank and a main tube water pressure regulating mechanism. The main tube water pressure regulating mechanism comprises a water regulating tank and a constant water level tank. A one-way inlet valve is arranged between the water regulating tank and the constant water level tank. A water supply tank is arranged in the water regulating tank. The water tank is set at the upper end of the water regulating tank and connected with the water regulating tank by a water supply switch to make the water level of the constant water level tank constant. The water outlet of the constant water level tank is connected with the water inlet of the main tube. The water inlet of the hair canal is connected with the water outlet of the branch tube. The hair canal is hung with hoses with different length in the perpendicular direction. The micro path emitter is arranged on the hose. Compared with the prior art, the device has simple structure, low cost, energy-saving, convenient application and maintenance, constant outflow of the micro path emitters, good irrigation effect and is suitable for applying in wide countryside.

The invention discloses a photovoltaic solar building lightning protection facility construction method which comprises the steps of photovoltaic solar building lightning protection grounding device construction, photovoltaic solar building lightning protection down-lead installation construction, photovoltaic solar building lightning protection lightning arrester installation construction, photovoltaic solar building lightning protection equipotential connection and installation construction, photovoltaic solar building lightning protection shielding device installation construction, photovoltaic solar building lightning protection integrated wiring installation construction, photovoltaic solar building lightning protection surge protection device installation construction and the like. The photovoltaic solar building lightning protection facility construction method has the advantages of convenient construction and good construction effect. Normal operation of photovoltaic solar buildings is ensured, cost is saved, the use of normal energy is reduced, CO2 emission is reduced, the method plays a very good role in improving the environment and alleviating the contradiction between energy supply and demand, and obvious social benefits are fully showed.

The invention provides an optically controlled vacuum switch module and relates to a power high-voltage switch. The optically controlled vacuum switch module is characterized in that based on the prior vacuum switch and the prior photoelectric technology, the optically controlled vacuum switch module is constituted; an operating mechanism is directly connected with interrupter equipotential; a battery and a capacitor controlled by an optoelectronic device are used to supply power to the mechanism; and an induction power coil gets electricity from a system to supplement the battery and the capacitor, controls movements of the mechanism at a cool end through optical fiber, and operates a vacuum interrupter to complete current connection and current breaking. A certain amount of optically controlled vacuum switch modules can be connected in series according to voltage grades to constitute a high-voltage level vacuum switch, so as to replace the prior SF6 gas high voltage switch with an greenhouse effect; and the optically controlled vacuum switch module has the advantages of simple structure and convenient realization in industry, and fiber control signals can be directly controlled by a computer of the power system.