32results about How to "No reduction in lifespan" patented technology

The invention provides an electronic endoscope image enhancement method and device. According to the method, by changing the light source output illumination brightness when adjacent two frame images of a camera are imaging, and then, synthesizing the two frame images, endoscope high-dynamic-range image enhancement is realized, and moving object fuzzy imaging due to increase of exposure time is avoided. According to the method, the electronic endoscope device for dynamic-range image enhancement is provided.

The invention discloses a route construction method with a strong source position privacy protection capacity. The route construction method comprises the following steps: firstly, creating a phantom node P according to the existing phantom routing policy; secondly, creating a first branch route formed by PA and PT by the phantom node P according to set hop count fai; thirdly, creating a main trunk routing path by a middle node A; finally, creating interference branch routes by nodes on the main trunk routing path. According to the method, only the main trunk routing path is created in an area with high network energy consumption, and the energy consumption of an energy cavity area is not increased, thus the life of a network is not reduced, the excess energy away from Sink area nodes is adequately utilized, and the interference branch routes are created as much as possible in an area with adequate energy; a very strong source position privacy protection capacity can be achieved on the basis of the novel tree routing policy of redundancy interference routing paths, meanwhile, the network achieves energy balance, and the life of the network is maximized.

The invention discloses a silver paste for a solar energy back passivation PERC battery back electrode. The silver paste is obtained by uniformly mixing silver powder, glass powder and an organic carrier; with a total amount being 100%, the silver paste comprises 55%-70% of the silver powder, 2%-5% of the glass powder and 25%-43% of the organic carrier. According to the silver paste for the solar energy back passivation PERC battery back electrode, the silver paste which is prepared by mixing the silver powder, glass powder and an organic carrier by a specified ratio is adopted; the silver paste is less than 10 [mu]m in fineness, 40-70 Pa.s in viscosity and greater than 4 N in pulling force; the silver paste increases by 1-2 mv in open voltage and increases by 5-10 mA in short current; the silver paste is 0.05%-0.12% greater than a conventional back silver paste in efficiency; the silver pastes is applied to a solar energy back passivation PERC batteries, the silver paste can accurately runs through an SiNx protection layer while not running through an AIOx passivation layer, that minority carrier lifetime of electrode points cannot be reduced can be effectively ensured, the open voltage is improved, and photoelectric conversion efficiency can be of battery sheets can be improved.

A cam shaft assembly is provided which accomplishes torque reduction, which obviates a shortened service life of a bearing and which is designed to reduce a radial dimension with respect to the center of a cam shaft. The cam shaft assembly includes: the cam shaft (1); a cam 2 separate from the cam shaft (1) and including a through-hole so as to be fitted on the cam shaft (1); and a rolling bearing 3 including annular monolithic inner and outer rings and serving to rotatably support the cam shaft (1). The cam shaft (1) is formed in a linear structure which has the same diameter at its portion where the cam 2 is mounted and its portion where the rolling bearing 3 is mounted.

The invention discloses a data transmission scheduling method based on an unequal relay set in a wireless sensor network. The data transmission scheduling method is characterized in that the data transmission scheduling method a defect that same number of relay nodes is selected in a whole network in previous research according to characteristics of high energy consumption by near base stations, low energy consumption by remote base stations, and large amount of residual energy according to energy consumption of the wireless sensor network. According to the data transmission scheduling method, a relatively large number of relay nodes are selected for the node for data transmission at a remote base station area. Along with number increase of the selected relay nodes, waiting time of the node for waking-up of the relay node reduces. Therefore data transmission delay reduction is realized. Furthermore data transmission success rate is improved, and high data transmission reliably is realized. Therefore, compared with an existing method, the data transmission scheduling method has advantages of improving data transmission reliability and reducing data transmission relay on condition that network service does not reduce.

The invention discloses a power utilization equipment control method. The method comprises the following steps that the total current of the power utilization environment where power utilization equipment is located is obtained; the preset current section where the total current is located is determined; and according to the located preset current section, corresponding power utilization equipmentcontrol parameters are determined, and running of the power utilization equipment is controlled according to the power utilization equipment control parameters. The invention further discloses a power utilization equipment control device, the power utilization equipment and a readable storage medium. According to the power utilization equipment control method and device, the power utilization equipment and the readable storage medium, stable power utilization equipment control is achieved, the situation of shortening of the service life due to constant start / stop is avoided, accuracy of powerutilization equipment control is improved, and accordingly the service life of the power utilization equipment is prolonged.

The invention discloses capacitance test circuit and test method under a DC bias condition. The circuit comprises a DC voltage stabilizing power source, an inductor, a diverter switch, a first capacitor, a second capacitor, an impedance tester and a bidirectional diverter switch. The DC voltage stabilizing power source and the inductor are connected in series and then are connected with a capacitor to be tested through the diverter switch; the first capacitor and the second capacitor are connected with the two ends of the capacitor to be tested, and the impedance tester is connected between the first capacitor and the second capacitor through the bidirectional diverter switch. The method comprises: switching on the diverter switch, connecting the bidirectional diverter switch to one end of the second capacitor, and charging the capacitor to a stable value; and then connecting the bidirectional diverter switch to the impedance tester, switching to an impedance test state, adjusting the impedance tester to obtain impedance, and then calculating to obtain the impedance of the capacitor to be tested. According to the invention, a charging process and an impedance test process can be switched, the impedance characteristics with in a wide DC bias scope and a wide frequency scope can be measured, and the impact caused by charging and discharging currents of the capacitor to the impedance tester is eliminated.

The purpose of the present invention is to provide a machining device capable of achieving an excellent machining tool cooling effect and high-precision machining and a machining method utilizing said machining device. Provided are a machining device that performs predetermined machining of a workpiece by using a machining tool housed inside a cylindrical body and a machining method that involves the use of said machining device, wherein: a scatter-preventing member that comes into contact with the workpiece without a gap therebetween during the predetermined machining is disposed at the tip of the cylindrical body; a transfer path for sucking in the waste of the workpiece produced during the predetermined machining is provided on a side surface of the cylindrical body; and an air-blowing device for blowing air at least to the tip of the machining tool is disposed on the side surface of the cylindrical body at a position symmetrical to that of the transfer path.

The invention discloses an electronic gun special for an electron beam bombardment furnace. The electronic gun is mainly composed of an electronic gun shell, lamp wires, a cathode, a beam-forming electrode assembly, an anode, a beam-forming electrode, a lamp wire head end electrode, a lamp wire tail end electrode, a cathode electrode, an electric reactor, an insulation assembly, insulation coolant oil and a high-voltage cable leading-out head, wherein the lamp wires, the cathode, the beam-forming electrode assembly, the anode, the beam-forming electrode, the lamp wire head end electrode, the lamp wire tail end electrode, the cathode electrode, the electric reactor, the insulation assembly, the insulation coolant oil and the high-voltage cable leading-out head are arranged in the electronic gun shell. The electric reactor which is additionally arranged is composed of an iron core and a winding wound on the iron core. The electric reactor is immersed in the insulation coolant oil. The head end of the winding of the electric reactor is connected with the beam-forming electrode, and the tail end of the winding of the electric reactor is connected with the cathode electrode. The electronic gun can restrain the transition of an electron beam, and therefore the beam passing rate of the electronic gun is improved.

The invention discloses a DC bias feature test circuit and test circuit of a capacitor. The circuit comprises a DC voltage-stabilizing power supply, a test instrument, a first capacitor, a second capacitor, a first switch and a second switch, wherein the first capacitor and the second capacitor are connected in parallel, one end of the DC voltage-stabilizing power supply is connected with one end of the first capacitor and one end of the second capacitor, the other end of the DC voltage-stabilizing power supply is connected with the other end of the first capacitor through the first switch, the other end of the first capacitor is connected with the other end of the second capacitor through the second switch, the test instrument is connected with the two ends of the second switch, and the first capacitor is a capacitor to be tested; and the second capacitor is a capacitor to be tested which has the same structure and performance as the first capacitor or a voltage source with known impedance or a capacitor with known parameters. According to the invention, the problem of testing a capacitor load under DC bias is overcome, measured capacitance data of the DC bias in a high-frequency circuit is particularly accurate and effect, and the measured data does not need complex operation.

The invention provides an electric driving rear axle assembly for a light medium-type vehicle. The electric driving rear axle assembly comprises an electric driving rear axle shell assembly, a drivingmotor, a reducer assembly and a differential assembly. The driving motor is used for providing driving force, the axis of the driving motor is parallel to the axes of wheels of the vehicle, but the driving motor and the wheels of the vehicle are not coaxial. The reducer assembly and the driving motor are fixed to the driving rear axle shell assembly together in a relatively independent mode, andthe reducer assembly is detachably connected with the driving motor and used for conducting speed reduction and torque increasing on the driving force provided by the driving motor. The differential assembly is used for distributing the driving force subjected to speed reduction and torque increasing to a left half axle and a right half axle of the vehicle, and the driving force is transmitted tothe left wheel and the right wheel of the vehicle through the left half axle and the right half axle so as to drive the vehicle to travel. Gears of the reducer assembly all adopt involute cylindricalgears and thus have the same torque capacity in forward rotation and reverse rotation of the driving motor. Therefore, transmission of the same torque capacity in the forward and reverse directions can be achieved, and it is ensured that the service life of the reducer assembly is not shortened while the energy recovery rate is increased.

The invention discloses capacitance test circuit and test method under a DC bias condition. The circuit comprises a DC voltage stabilizing power source, an inductor, a diverter switch, a first capacitor, a second capacitor, an impedance tester and a bidirectional diverter switch. The DC voltage stabilizing power source and the inductor are connected in series and then are connected with a capacitor to be tested through the diverter switch; the first capacitor and the second capacitor are connected with the two ends of the capacitor to be tested, and the impedance tester is connected between the first capacitor and the second capacitor through the bidirectional diverter switch. The method comprises: switching on the diverter switch, connecting the bidirectional diverter switch to one end of the second capacitor, and charging the capacitor to a stable value; and then connecting the bidirectional diverter switch to the impedance tester, switching to an impedance test state, adjusting the impedance tester to obtain impedance, and then calculating to obtain the impedance of the capacitor to be tested. According to the invention, a charging process and an impedance test process can be switched, the impedance characteristics with in a wide DC bias scope and a wide frequency scope can be measured, and the impact caused by charging and discharging currents of the capacitor to the impedance tester is eliminated.

The invention discloses a capacitor emergency lamp and a power supply method therefor. The capacitor emergency lamp comprises a lamp body, a power supply unit and a processing control unit; the powersupply unit comprises a mains supply module and a capacitor module; the lamp body is electrically connected to the mains supply module and the capacitor module; the mains supply module and the capacitor module are controllably connected to the processing control unit, wherein the processing control unit further comprises a detection module and a control module; the detection module is in communication interconnection with the power supply unit, and the detection module is used for detecting the circuit state of the power supply unit; and the control module selects one of the mains supply module and the capacitor module to supply electric energy for the lamp body according the detection result of the detection module.

The invention provides a movable contact member of which the stroke can be increased without shortening the life of the movable contact member and which makes a switch device using the movable contact member small, and a switch device using the movable contact member. A movable contact member (1) includes a swelling portion (11) that swells in the shape of a dome and can operates reverselywhen pressed, and a skirt portion (12) that is continuously formed from an outer peripheral edge portion (11a) of the swelling portion (11). The skirt portion (12) includes cut-out portions (32) cut out at four portions thereof, portions of the skirt portion (12) except for the cut-out portions (32) form contact portions (52), the cut-out portions (32) of the skirt portion (12) swell toward the swelling portion (11) so that portions of the skirt portion (12) except for the cut-out portions (32) form portions capable of being grounded, and a cut-out face shape (PS) of each of the cut-out portions (32) is a linear shape or a gently curved shape when the skirt portion (12) does not swell. Further, a switch device (201) is formed using the movable contact member (1).

The invention discloses a ceramic pump body which comprises a volute and a protective plate, and the volute comprises a shell and a volute lining. The protective plate comprises a protective plate framework and a protective plate lining, and a first buffer layer is arranged between the shell and the volute lining. A through hole and a taper hole are sequentially formed in the middle of the volute from outside to inside, and the through hole is connected with the taper hole through a first axial end face. A second buffer layer is arranged between the protective plate framework and the protective plate lining, a shaft body and a conical shaft are sequentially arranged on the protective plate, and the shaft body is connected with the conical shaft through a second axial end face. The shaft body is matched with the through hole, and the conical shaft is matched with the taper hole. An annular space which is defined by the first axial end face, the second axial end face, the inner wall of the through hole and the outer wall of the conical shaft and used for containing a sealing piece is arranged between the volute and the protective plate. According to the provided ceramic pump body, a medium cannot be in contact with a metal piece of the volute or the protective plate, so that the ceramic pump body not only has better wear resistance and corrosion resistance, but also can control the manufacturing cost within a proper range.

The invention discloses a display panel and an electronic device. The display panel is provided with an optical sensor area, and the optical sensor area corresponds to an optical sensor. The display panel comprises a plurality of light-emitting units located in the optical sensor area; and the light-emitting unit comprises a first light-emitting subunit and at least one second light-emitting subunit, wherein the first light-emitting subunit comprises a pixel driving circuit. According to the invention, at least two light-emitting subunits are driven to emit light through one pixel driving circuit, so that wiring density of the array substrate in the optical sensor area can be reduced, and the brightness of pixels in the optical sensor area does not need to be improved in the display of thedisplay panel, so that the light transmittance of the optical sensor area of the display panel can be ensured, and the service life of the pixels is not shortened.

The invention discloses a high-hardness hard alloy batten resistant to welding cracking and a preparation method thereof.The hard alloy batten is provided with a high-toughness surface layer and a high-hardness inner layer, the binding phase content of the surface layer is 1.2 times or above that of the inner layer, the surface layer is only composed of a WC phase and a binding phase, the thickness of the surface layer is 5-100 microns, and the inner layer is composed of the WC phase, the binding phase and a cubic carbide phase; in addition, the outer surface of the batten is coated with a binding phase, and the thickness of a coating layer is 1-5 microns. The hard alloy batten is prepared from the following components: 80 to 96 weight percent of WC (Wolfram Carbide), 2.0 to 16.5 weight percent of binding phase and 0.5 to 8 weight percent of cubic carbide, wherein the average particle size of the WC is 0.1 to 6 microns. The preparation method comprises the steps of wet grinding, drying, forming, sintering and heat treatment. The batten has excellent welding crack resistance and wear resistance, and has a good application prospect in the field of metal and wood processing.

The invention discloses a silver paste for a solar energy back passivation PERC battery back electrode. The silver paste is obtained by uniformly mixing silver powder, glass powder and an organic carrier; with a total amount being 100%, the silver paste comprises 55%-70% of the silver powder, 2%-5% of the glass powder and 25%-43% of the organic carrier. According to the silver paste for the solar energy back passivation PERC battery back electrode, the silver paste which is prepared by mixing the silver powder, glass powder and an organic carrier by a specified ratio is adopted; the silver paste is less than 10 [mu]m in fineness, 40-70 Pa.s in viscosity and greater than 4 N in pulling force; the silver paste increases by 1-2 mv in open voltage and increases by 5-10 mA in short current; the silver paste is 0.05%-0.12% greater than a conventional back silver paste in efficiency; the silver pastes is applied to a solar energy back passivation PERC batteries, the silver paste can accurately runs through an SiNx protection layer while not running through an AIOx passivation layer, that minority carrier lifetime of electrode points cannot be reduced can be effectively ensured, the open voltage is improved, and photoelectric conversion efficiency can be of battery sheets can be improved.

The invention discloses an energy-saving device and method for a transformer in a solar power station. A current converter circuit, a control unit, a transformer circuit, a secondary switching circuit, a main switching circuit and a current converter circuit are added, and a given AC voltage instruction is received and an alternating current is generated, so as to supply a low-voltage exciting current to a no-load high-voltage transformer for excitation. The control unit is used for outputting the given AC voltage instruction to the current converter circuit, and controlling the on / off of thesecondary switching circuit and the main switching circuit. The transformer circuit is used for the boosting of the low-voltage exciting current of the current converter circuit, and achieves the excitation of the no-load high-voltage transformer. The photovoltaic power generation can be withdrawn from the high-voltage transformer, thereby saving the energy consumption and reducing the electricityfee. Meanwhile, the high-voltage transformer is timely put before the power generation, so the reliability is not reduced and the equipment service life is not shortened. The device is ingenious in idea, is convenient to implement, and is good in application prospect.

The invention discloses a display panel and an electronic device. The display panel has an optical sensor area corresponding to the optical sensor. The display panel includes a plurality of light emitting units located in the optical sensor area; the light emitting unit includes a first light emitting subunit and at least one The second light emitting subunit, the first light emitting subunit includes a pixel driving circuit. The present invention drives at least two light-emitting sub-units to emit light through a pixel driving circuit, which can reduce the routing density of the array substrate in the optical sensor area, and does not need to increase the brightness of the pixels in the optical sensor area during the display of the display panel, thereby ensuring the high brightness of the display panel. Light transmission in the optical sensor area without reducing the lifetime of the pixels therein.

The invention discloses a DC bias feature test circuit and test circuit of a capacitor. The circuit comprises a DC voltage-stabilizing power supply, a test instrument, a first capacitor, a second capacitor, a first switch and a second switch, wherein the first capacitor and the second capacitor are connected in parallel, one end of the DC voltage-stabilizing power supply is connected with one end of the first capacitor and one end of the second capacitor, the other end of the DC voltage-stabilizing power supply is connected with the other end of the first capacitor through the first switch, the other end of the first capacitor is connected with the other end of the second capacitor through the second switch, the test instrument is connected with the two ends of the second switch, and the first capacitor is a capacitor to be tested; and the second capacitor is a capacitor to be tested which has the same structure and performance as the first capacitor or a voltage source with known impedance or a capacitor with known parameters. According to the invention, the problem of testing a capacitor load under DC bias is overcome, measured capacitance data of the DC bias in a high-frequency circuit is particularly accurate and effect, and the measured data does not need complex operation.

The invention discloses a marking method based on the unequal probabilities during log and migration trace source tracking in a wireless sensor network. According to the method, the unequal marking probabilities are adopted for nodes different distances away from base stations in the wireless sensor network adopting a log and migration trace source tracking strategy; lower marking probabilities are adopted for the nodes of near base station regions, and higher marking probabilities are adopted for the nodes of far base station regions. The marking probabilities of the nodes of the far base station regions are further improved based on existing strategies, the probability that the nodes are marked and the total marking amount of a system can be increased, and accordingly the safety performance of trace source tracking can be improved. The storage capacity of the nodes is not needed to be increased based on increase of the marking probabilities, and the service life of the network is not influenced.

The invention belongs to the technical field of grinding wheel manufacturing, and discloses a grinding wheel for hard material processing and a preparation method of the grinding wheel. The grinding wheel for hard material processing comprises a grinding wheel base body, a transition layer and a grinding material layer from inside to outside; raw materials used by the grinding material layer comprise a grinding material and a metal bonding agent; the metal bonding agent comprises the following components in parts by weight: 56-85 parts of copper powder, 10-40 parts of tin powder, 1-16 parts of silver powder, 0-5 parts of cobalt powder and 0-5 parts of nickel powder; raw materials used by the transition layer comprise at least one of copper powder, tin powder, silver powder, cobalt powder and nickel powder. The grinding wheel has the advantages of being high in sharpness, long in service life and good in processing efficiency, and can be applied to processing of hard materials such as metal ceramic, high-speed steel and hard alloy.

The invention provides a method for determining the optimal oil pumping rate of a beam-pumping unit. The method comprises the steps that an inflow characteristic curve is determined; determining an outflow characteristic curve; drawing an oil well supply and discharge coordination diagram according to the inflow characteristic curve and the outflow characteristic curve; calculating the working fluid level depth; calculating a reasonable submergence degree; expressing an oil well pump plunger motion equation in a Fourier series expansion form; calculating the volume of a pump cavity between the plunger and the standing valve; calculating the volume of liquid in the pump cavity; calculating a pump fullness coefficient by combining the volume of the pump cavity and the volume of liquid in the pump cavity; determining constraint conditions; calculating each optimal coefficient of the Fourier series expansion; an optimized oil well pump plunger motion equation is determined; and the suspension point motion equation and the motor motion rate are reversely deduced through the oil well pump plunger motion equation. On the premise that the service life of an oil pumping system is not shortened, the pump efficiency and the oil pumping efficiency are improved, and the oil pumping consumption is reduced.

The invention discloses an energy-efficient inversion boost complete equipment and method for solar energy power generation; the complete equipment comprises the following units: a boost electric power transformer used for boosting the AC electric energy outputted by a photovoltaic grid connected inverter to high voltage, and delivering the high voltage to the power grid through a switch unit; theswitch unit used for conducting or breaking the electric connection between the boost electric power transformer and the power grid according to a switch control order, detecting the voltage amplitudes and waveforms on the power grid side and the high voltage side of the boost electric energy transformer, and sending same to an intelligent converter; the intelligent converter used for receiving the voltage amplitudes and waveforms sent by the switch unit, outputting a control signal to the boost electric energy transformer, controlling the voltage amplitude and waveform of the high voltage side of the boost electric energy transformer, and sending the switch control order to the switch unit; a step down transformer used for providing the work power supply for the intelligent converter. The energy-efficient inversion boost complete equipment can quit the transformer in night, thus saving energy consumption, and reducing electricity costs; the transformer can be timely put in service before the power generation process, thus ensuring the reliability and equipment life.