5results about How to "No additional cost" patented technology

The utility model relates to mould technical field especially relates to a mould structure capable of automatically falling injection plastics head. It includes upper die and lower die who sets up correspondingly up and down, and forms injection cavity between upper die and lower die, and upper die includes front plate, the stripper plate who is connected with front plate bottom surface through stripper plate pull rod, and the female die plate who is connected with front plate through small pull rod, and the stripper plate placing groove who is used to install stripper plate is set up on female die plate upper surface. The utility model has the advantages that: after the technical scheme injection moulding is completed, the male die plate retreats, the front plate and the female die plate open, the stripper plate pull rod forces the stripper plate to separate from the female die plate, the sprue is pulled out by the stripper plate from the female die plate and automatically falls, the male die plate continues to retreat and separates from the female die plate, and the product is ejected and taken out, the flow channel structure is pulled out by the material pulling plate, and after the injection moulding is completed, it is automatically dropped, the mould is simplified, and the process of increasing manpower to take the flow channel or increasing the mechanical hand to take out the flow channel is avoided.

The present application relates to the technical field of wireless network optimization, and discloses a kind of based on multi-parameter dynamic adjustment's portable WiFi network switching method and system, a kind of based on multi-parameter dynamic adjustment's portable WiFi network switching method, comprising the following steps: step S1, the incidence factor change rate is calculated;Step S2, the thermal hysteresis compression factor is calculated;Step S3, the historical effective capacity and forward prediction capacity are calculated;Step S4, the service required service rate is calculated;Step S5, the arc segment bias is calculated;Step S6, the final income value is calculated;Step S7, the target network number, switching execution flag and stable maintenance duration are generated.The present application includes the switching decision system with the geometric penetration characteristics of vehicle window and equipment thermal inertia, through the quantitative identification of the asymmetry of serviceable arc segment, completes the comprehensive income evaluation of candidate network and target network selection, reduces meaningless frequent switching action, improves the continuity of cellular backhaul link.

This invention discloses a method and system for optimizing speech recognition under noise based on ultrasonic micro-motion detection. The method includes the following steps: an ultrasonic transmitting module continuously transmits ultrasonic signals; an ultrasonic receiving module continuously receives ultrasonic signals; the received ultrasonic signals are preprocessed to obtain the difference frequency signal of the reflected wave from the moving object; based on the obtained difference frequency signal, whether there is micro-motion within a specific distance is detected; if there is micro-motion, speech is output; otherwise, no speech is output. In this invention, the presence or absence of target speech is indicated by detecting lip micro-movements, which has good noise robustness. It utilizes the built-in speaker and microphone of a smart device to transmit and receive ultrasonic waves to detect lip micro-movements, requiring no additional cost, and has high accuracy and strong practicality, making it suitable for industrial-scale application.

This utility model relates to the field of fluid separation technology, and more particularly to a retention chamber for separating mixed gases. The retention chamber has a hollow structure and can be positioned radially distal to the center of rotation of a primary separation device, rotating coaxially and synchronously with the primary separation device, and the two are connected. A Brownian motion suppressor is provided circumferentially inside the retention chamber, which effectively prevents the remixing of different gas components after separation, improving separation efficiency. Simultaneously, the retention chamber has a first end and a second end arranged axially inclined, with the internal space gradually increasing from the first end to the second end. A first exhaust port is located radially proximal to the first end, and a second exhaust port is located radially distal to the second end. This inclined shape allows different gas components to accumulate in different areas, which is beneficial for improving the purity of the separated gas and facilitates disassembly. This retention chamber has a simple overall structure and small size, and can be used to improve various traditional centrifuge devices on the market.

This invention discloses a control method for switching a dual-wire energy storage inverter from grid-connected to off-grid operation, comprising the following steps: S1: Detecting abnormal grid conditions and disconnecting the grid-connected relay when an abnormality occurs; S2: Determining whether the absolute value of the filter capacitor voltage exceeds a predetermined threshold and whether the discharge time is less than a predetermined time limit; S3: Selecting a corresponding combination of switching transistors for high-frequency drive based on the polarity of the capacitor voltage to reconstruct the full-bridge circuit into a boost circuit; S4: Calculating the duty cycle of the switching transistors based on the dynamic relationship between the capacitor voltage and the bus voltage, and discharging the capacitor energy to the DC bus through the boost circuit; S5: Resetting the output phase angle of the energy storage inverter to zero and starting off-grid operation. This invention effectively solves the problem of voltage oscillation during off-grid startup of residential dual-wire energy storage inverters under various grid-connected to off-grid operating conditions.