7results about How to "Avoid interconnection" patented technology

The invention discloses a nuclear power device fault diagnosis method based on feature vectors and Bayesian reasoning, belongs to the technical field of Bayesian reasoning, and particularly relates to nuclear power device fault diagnosis. The method solves the problem that a traditional Bayesian model only uses parameter values as a fault reasoning basis and ignores a large amount of parameter time-frequency feature information, so that the model is difficult to distinguish feature similar faults and realize accurate positioning of the faults, and the fault diagnosis accuracy and the model robustness are affected. The method comprises the following steps: a model learning step: performing structure learning and parameter learning on a Bayesian model according to fault historical operation data to obtain a Bayesian vector reasoning model; the nuclear power device fault diagnosis method based on the feature vector and Bayesian reasoning is suitable for fault diagnosis of a nuclear power device.

The invention provides a solar cell structure. The solar cell structure includes: a back contact cell having a back electrode on a back surface thereof; the first perovskite cell is located on the side, away from the back electrode, of the back contact cell, and the surface of the side, away from the back contact cell, of the first perovskite cell is provided with an upper electrode; and the second perovskite cell is located between the back contact cell and the first perovskite cell, and the band gap of the perovskite absorption layer of the first perovskite cell is different from the band gap of the perovskite absorption layer of the second perovskite cell. According to the invention, the utilization rate of solar photons is expanded, so that the limit photoelectric conversion efficiency of the solar cell structure is further improved.

The invention provides a multichannel wavelength division multiplexing transmitting chip which can be applied to the technical field of microwave photonic integrated chips. The chip comprises a substrate, an array laser chip, an array modulator chip, a wavelength division multiplexing chip and a photon lead bonding structure, and the array laser chip, the array modulator chip and the wavelength division multiplexing chip are located on the substrate and located on the same side of the substrate; and the array laser chip, the array modulator chip and the wavelength division multiplexing chip are connected through photon lead bonding structures. Main devices in the microwave photonic system are integrated into a whole through the substrate and the photonic lead bonding structure, the monolithic integrated microwave photonic system is achieved, and the microwave photonic system has the advantages of being small in size, high in integration degree and high in reliability. The invention further provides a preparation method of the multi-channel wavelength division multiplexing transmitting chip.

The present invention relates to a filter element (30) having a filter medium (32) and a first end plate (36), the filter medium circumferentially surrounding the longitudinal axis (33) of the filter element (30), wherein the filter medium (32) is capable of being flowed from the radial outside to the radial inside, wherein the filter element (30) has a primary air passage (46) and a secondary air passage (54) preferably located at the center, wherein the filter medium (32) has an axial recess (58) on the first end side (34), and the channel (56) of the first end plate (36) forming the secondary air passage (54) extends in the axial recess. Furthermore, the present invention relates to an air filter (10) having a filter housing (12) and such filter element (30), the filter housing having an unpurified air inlet (18), a primary air outlet (20) and a secondary air outlet (22), the filter element separating the unpurified side (42) communicating with the unpurified air inlet (18) and the purified side (44) in the filter housing (12), wherein the primary air outlet (20) is connected to the purified side (44) via the primary air passage (46), and the secondary air outlet (22) is connected to the purified side (44) via the secondary air passage (54).

The present invention relates to the field of semiconductor manufacturing, and discloses a capacitor structure and a preparation method thereof. A preparation method of a capacitor structure comprises: depositing a first supporting layer, a first sacrificial layer, and a second supporting layer on a substrate in sequence; forming a heterogeneous region in the second supporting layer; depositing a second sacrificial layer and a third supporting layer on the second supporting layer in sequence; etching in sequence from the third supporting layer to the substrate to form a capacitor hole through an etching process, and the capacitor hole penetrates the heterogeneous region, wherein the etching selectivity ratio of the material in the heterogeneous region to the material in the second supporting layer is greater than 1; and forming a lower electrode layer on the inner surface of the capacitor hole. In the process of etching in sequence from the third supporting layer to the substrate, if the etching direction is deflected to a certain extent, due to the existence of the heterogeneous region, the heterogeneous region will be etched preferentially, that is, the etching starting point of the lower half is corrected by the heterogeneous region, and the etching direction can be corrected to a certain extent, thereby avoiding the problem of adjacent capacitor holes being interconnected due to the excessive deflection of the capacitor holes in the lower half.

The utility model discloses a lithium battery charger convenient for wire arrangement, which comprises a lithium battery charger main body, the top end of the lithium battery charger main body is provided with a connecting power line port, the top end of the connecting power line port is provided with a power line main body, and the bottom end of the power line main body is provided with a charging head. A display lamp is mounted at one end of the lithium battery charger main body, an elastic protective sleeve is mounted outside the power line main body, and second connecting bandages are uniformly mounted on the outer side of the elastic protective sleeve. Through mutual connection of a second rough surface patch and a second suede surface patch, the elastic protective sleeve can be conveniently wound and fixed by the second connecting bandages; and meanwhile, under the connection action of the first rough surface pastes and the second suede surface pastes in the two groups of first connecting bandages, the power lines can be conveniently stored and arranged, so that the situation that the use efficiency is influenced and the convenience is improved due to inconvenience caused in the use and storage processes due to mutual winding between the power lines is effectively avoided.

The invention provides a condensation heat transfer tube with multiple diversion trenches and a preparation method thereof, and the preparation method comprises the following steps: processing a tube matrix through a forming device; the forming device comprises three rollers and a threaded core head, the threaded core head is inserted into the pipe base body, and the three rollers rotate to act on the pipe base body so that the pipe base body can rotate and feed at the same time; a rolling cutter set, a grooving cutter and a flat cutter are arranged on a roller, a pipe base body is firstly fed to the rolling cutter set to be machined, the rolling cutter set comprises 11 rolling cutters, a gasket is arranged between every two adjacent rolling cutters, and under the action of the 11 rolling cutters, the outer surface of the pipe base body is gradually deformed and heightened to form a main fin. Then feeding to a grooving cutter and a flat cutter in sequence for processing; the grooving cutter acts on the main fins to form rhombic flow guide grooves and top protrusions. And the side fins are machined and formed on the main fins by the flat cutter. According to the multi-diversion-groove heat transfer pipe for condensation and the preparation method thereof, the energy utilization efficiency and the heat exchange efficiency can be improved, and environmental pollution is reduced.