3results about How to "Help to collect" patented technology

The application discloses a concrete block cutting device and belongs to the technical field of concrete block cutting. The device comprises a fixed plate, the outer wall of the fixed plate is fixedly connected with a fixed frame, the upper portion of the inside of the fixed frame is provided with a fixed support, one end of the fixed support is fixedly connected with a blade frame, the inside of the fixed frame is fixedly connected with an inclined precision filter screen plate, the two sides of the upper end of the precision filter screen plate are fixedly connected with guide nets, the upper end surface of the precision filter screen plate is fixedly connected with a plurality of extension strips, the lower end surface of the fixed support is fixedly connected with a fixed rod, a plurality of air suction fans are used for air suction, dust generated in the cutting process can pass through the grid plate and fall on the precision filter screen plate and the guide nets, dust flying is effectively prevented, the operation environment of workers is greatly improved, the harm of dust to the health of workers is reduced, and the working area is more clean, which is convenient for subsequent cleaning and maintenance.

The present invention discloses an intelligent metasurface integrating signal reflection, refraction, amplification and energy collection and its application. The intelligent metasurface can simultaneously support the reflection, refraction, amplification and energy collection of wireless signals on one surface, so as to achieve the purpose of amplifying the reflected / refracted signals through the collected energy, thereby enhancing the effective coverage of the wireless signal. When the signal model of MF-RIS constructed by the present invention is applied to a multi-user wireless network, with the goal of maximizing the sum rate of multiple users in an orthogonal multiple access network assisted by MF-RIS, a non-convex optimization problem for jointly designing the base station transmit beamforming, the operation modes and parameters of different components of MF-RIS and their deployment locations is constructed, and then an iterative optimization algorithm is designed to effectively solve the aforementioned non-convex optimization problem, thereby maximizing the sum rate of multiple users.

This invention provides a method, apparatus, and electronic device for improving the fluidity of porous media using pulsating flow. The method includes: determining a critical threshold and a subcritical baseline; applying a steady-state displacement with a displacement intensity equal to the subcritical baseline, and superimposing a pulsating drive; using a solution framework to advance the interfacial motion of droplets under pulsating drive over time, adaptively controlling the time step during the advancement process, the time step being jointly limited by multiple physical constraints; determining the truncated axial net displacement of the droplet within the pore throat contraction structure within a fixed observation time window; obtaining the fluidity index corresponding to the pulsating drive based on the truncated axial net displacement; keeping the amplitude of the pulsating drive constant, changing the frequency of the pulsating drive to obtain a first curve of the fluidity index changing with frequency, and determining a cutoff frequency based on the first curve; changing the amplitude of the pulsating drive to obtain a second curve of the cutoff frequency changing with amplitude. This method is suitable for engineering parameter design and selection and is reproducible.