8results about How to "Obvious location" patented technology

The invention discloses a double-frequency tomography synthetic aperture radar three-dimensional imaging method, system and device and a medium, and the method comprises the steps: obtaining low-frequency image data and high-frequency image data of a target region through a double-frequency tomography synthetic aperture radar system, carrying out the neighborhood pixel joint processing of the low-frequency image data, obtaining a low-frequency data stack, and carrying out the neighborhood pixel joint processing of the high-frequency image data; performing neighborhood pixel joint processing on the high-frequency image data to obtain a high-frequency data stack; based on a dual-frequency tomography principle, fusing the low-frequency data stack and the high-frequency data stack to obtain a dual-frequency data stack; performing dual-frequency joint solution on the dual-frequency data stack by adopting a distributed compressed sensing algorithm to obtain an elevation scattering coefficient vector; and generating a three-dimensional point cloud according to the elevation scattering coefficient vector to obtain a three-dimensional image of the target area. According to the method provided by the invention, the required flight frequency can be reduced, the position of the scatterer can be effectively highlighted, and the accuracy of solving the ambiguity in the elevation direction is greatly improved.

The invention relates to a transformer area voltage multi-dimensional feature portrait construction method based on fusion ISSA clustering. The method comprises the following steps: S1, acquiring sampling point voltage and load data of each user in a transformer area; step S2, based on the voltage and load data of the sampling point, calculating a voltage feature tag considering security, stability and economic dimensions; and S3, determining an optimal clustering cluster center combination by using a K-means clustering algorithm based on ISSA and taking the voltage feature tag as a clustering object, and distributing the voltage feature tag into a cluster to obtain a clustering result, thereby realizing construction of the transformer area voltage multi-dimensional feature portrait. Compared with the prior art, the method achieves the optimal determination of the clustering center, fully considers the multi-dimensional factors of the transformer area and the difference between the users in the transformer area, and effectively avoids the falling into a local optimal solution.

The invention discloses a landslide monitoring and early warning method based on potential sliding surface middle water content monitoring assisted by rainfall and earth surface displacement mutual verification. The method specifically comprises the following steps: S1, obtaining a real earth surface point cloud; s2, acquiring structural information of a rock core and an underground rock stratum; s3, carrying out three-dimensional geological modeling; s4, establishing a relation model of the water content and the physical and mechanical parameters; s5, inverting the initial state of the slope; s6, installing a rain gauge, simulating a rainfall process, calculating a stability coefficient, and predicting a landslide range; s7, setting an early warning threshold value; s8, installing an earth surface displacement meter and an early warning broadcast; s9, linkage early warning broadcast automatic early warning is carried out; and S10, performing mutual verification by taking moisture content early warning as a main part and taking rainfall and surface displacement monitoring as an auxiliary part. According to the method, through high-precision three-dimensional geologic modeling, 'surface-based general 'of slope profile analysis is improved; the potential sliding surface is simulated and calculated according to the mechanical behavior characteristic numerical value of the rock-soil body, and the defects that the rock-soil body is regarded as a rigid body and the sliding surface is assumed in a strip division method are avoided.

According to the relay, when a first contact part and a second contact part are separated from each other or make contact with each other to generate an electric arc, a magnetic field formed by a first permanent magnet can play a traction role on the electric arc, and the arc blowing and arc discharging effects are achieved. The electric arc moves along the contact surface, and when the electric arc moves to the arc isolating groove, the arc isolating groove can play a role in isolating, lengthening and blocking the electric arc, so that the arcing time is shortened. Therefore, the defects that the electric arc ablates the inner cavity and causes relay explosion and the like can be effectively avoided, the product performance can still be ensured even under the condition of high load, and the product failure probability can be reduced. And meanwhile, the first contact part is synchronously contacted with the at least two sheet units, and the first contact part and the second contact part have at least two contact points, so that the shunting effect is achieved, the contact resistance can be reduced, the contact stability and reliability can be improved, and the temperature rise can be reduced.

The utility model provides a rear cabin framework assembly which comprises a left structure assembly and a right structure assembly, one of the left structure assembly and the right structure assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with a first connecting part and a second connecting part, and the second connecting part is connected with a cross beam; one end of the rear longitudinal beam is connected with the first connecting part; the second connecting piece is provided with a third connecting part and a fourth connecting part, and the third connecting part is connected with the cross beam; the third connecting piece is provided with a fifth connecting part and a sixth connecting part; one end of the doorsill beam is connected with the sixth connecting part; the lap joint beam is provided with a seventh connecting part, and the seventh connecting part is connected with the fourth connecting part and the fifth connecting part; the fourth connecting piece is connected to the top of the lap joint beam; and the C column is vertically arranged on the fourth connecting piece. The rear cabin framework solves the problems that in the prior art, a rear cabin framework of an electric automobile is high in cost and poor in using effect.

The present invention provides a control method for a refrigerator and a refrigerator. The control method comprises: when the door body is opened, judging whether the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is working; if the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is in the working state, suspending the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device; when the door body is closed, detecting whether the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is in the suspended working state; if the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is in the suspended working state, continuing the operation of the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device; if the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is in the stopped state, detecting whether the atmosphere-controlled fresh-keeping device has been opened; if the atmosphere-controlled fresh-keeping device has been opened, after the door body is closed for a first preset time, when the compressor of the refrigerator is stopped, the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is in the working state; otherwise, after the door body is closed, the atmosphere-controlled membrane component of the atmosphere-controlled fresh-keeping device is in the working state at every second preset time interval.

The application discloses an antenna signal adjusting method applied to a wireless switch panel, wherein the wireless switch panel comprises a wireless communication device and an antenna, and the method comprises the following steps: acquiring a return loss change curve varying with a communication frequency between the wireless communication device and the antenna respectively based on the condition that the wireless switch panel is installed in different medium types; dividing a communication frequency of the wireless communication device into multiple frequency bands, determining a frequency band where a minimum return loss in a communication frequency range is located according to the return loss change curve, and matching the frequency band with a corresponding medium type; detecting a frequency band where a resonant frequency of the current antenna is located in the communication frequency range, and adaptively adjusting based on the matching result. The application further discloses a wireless switch panel and a computer readable storage medium, which can adaptively adjust a network signal.

The utility model relates to a foldable type multifunctional centrally-mounted safety frame and tractor, the tractor comprises a tractor main body and a safety frame, the tractor main body comprises a chassis and a gearbox installed on the chassis, and the gearbox is located in the middle of the tractor main body; the safety frame comprises a first camber beam and two support sets, each support set comprises a first support and a second support, and the two ends of the first camber beam are connected with the ends, in the length direction, of the first supports respectively. Each support set comprises a folding positioning assembly used for connecting the first support and the second support in the support set. The ends, away from the first support, of the two second supports are fixedly connected with the gearbox. The safety frame is directly installed on the gearbox of the tractor chassis, the strength of the safety frame is enhanced, and the safety frame arranged in the middle can provide a larger safety accommodation area for a driver. The safety frame is folded through the folding positioning assembly, and the height of the whole tractor can be reduced in the transportation process.