7results about How to "Small adjustment" patented technology

The application discloses a three-dimensional video fusion calibration and real-time rendering method and device, and the method comprises the following steps: acquiring a video frame image, performing distortion correction, and saving the distortion parameters after the distortion correction; selecting a plurality of feature points in the video frame image and the picture position of a corresponding three-dimensional scene of the video frame image, respectively, and performing registration on the video frame image and the picture position of the three-dimensional scene; acquiring initial internal parameters of a camera for shooting the video, and obtaining optimal internal parameters through an optimization solving mode; determining the rotation and translation vectors of the camera relative to the origin of the world coordinate system based on the optimal internal parameters; determining the world coordinates and rotation angles of the camera in the three-dimensional scene, and projecting the image after the distortion correction onto the three-dimensional face sheet corresponding to the picture position of the three-dimensional scene in the form of texture projection. Even in the case of a large difference between internal parameter templates, the method can quickly find suitable internal parameters, and the accuracy of projection is ensured.

The invention relates to a pulse delay automatic gain control method, which comprises the following steps of: determining an attenuation initial value under each power configuration after starting up according to a self-checking signal and a current environment temperature; the input radio frequency signal and the output radio frequency signal are detected in real time in the detection channel, peak value reading is carried out, and the signal amplitude is judged; reading an initial attenuation value of the current environment temperature under the current input signal, calculating a theoretical optimal gain value according to the detected output signal amplitude and the expected target output amplitude, and preferentially using the value to carry out power control; detecting whether a pulse signal arrives or not, if the difference between the current power and the target power exceeds an error threshold value, after the current pulse signal is ended or the longest signal period is ended, calculating a new gain control value according to the relationship among the attenuator characteristics, the voltage and the power, and performing amplification or attenuation processing on the output signal by adopting the new gain control value, and signals with stable amplitude are output. According to the invention, rapid and undistorted gain control of the pulse signal is realized.

The invention relates to a pressure control method, device and equipment based on an ethylene unloading working condition of a VAC device, a medium and a program product. The method comprises the following steps: determining a current working condition according to process characteristics; automatically switching a pressure control target according to the working condition and the pressure parameter; according to different working conditions, the pressure control points of the storage tank are dynamically adjusted in stages; reading an actual measurement value of a pressure variable, setting algorithm detection interval time, and obtaining a pressure change rate through differential calculation; the pressure control point serves as a target value, the actual pressure measurement value serves as a feedback value, the deviation between the target value and the feedback value is calculated, the deviation is processed through a PID algorithm, and an opening instruction of the ethylene backflow flow valve is output. Therefore, the operation condition of the device can be automatically identified, and a corresponding control strategy is matched. Automatic control over the pressure of the ethylene buffer tank in the whole ethylene unloading process is achieved; ethylene backflow is used as a core pressure control means, and the adjusting amplitude of the pressure control valve of the ethylene buffer tank is reduced.

This invention relates to a double-track supported rail grinding machine, belonging to the field of rail grinding technology. It solves the technical problems of cumbersome rail replacement, dangerous grinding operations for workers, and the inability to guarantee a safe grinding environment. The machine includes a main support frame with a sliding main frame, a sliding groove, a sliding rod inside the sliding groove, a locking groove in the sliding groove, a reset groove on the sliding main frame, a curved groove on the sliding rod, a reset push plate at the top of a spherical slider, a push spring on one side of the reset push plate, a reset push frame at one end of the push spring, a connecting frame inside the secondary sliding frame, an engine frame on the connecting frame, and a drive engine at the top of the engine frame. This invention moves the sliding main frame by pushing the sliding rod, and by adjusting and controlling the position of the sliding main frame, it can adjust and grind different rails without removing the structure, reducing the need for significant structural adjustments.

This invention discloses an intelligent fault prediction method for pneumatic valve islands based on multi-protocol integration, belonging to the field of pneumatic valve island fault prediction technology. It includes constructing a protocol sensing layer data cube by integrating multi-protocol edge gateways to synchronously collect multi-source sensor data under the same timestamp reference, based on the heterogeneous characteristics of the valve island's physical topology and protocols. This invention achieves a paradigm shift from macroscopic pressure judgment to microscopic feedforward early warning by constructing the protocol sensing layer data cube, fusing protocol-topology joint feature maps, quantifying microscopic flow stability, predicting flow reconstruction probability, generating dynamic multimodal intervention commands, verifying protocol adaptive closed-loop, and performing digital twin health simulation. This forms a complete intelligent prediction-intervention-optimization closed loop, enabling the system to intelligently replenish air and automatically adjust throughout the process, achieving zero-blockage operation of the valve island and significantly improving system reliability and maintenance efficiency.

The automatic online pulverized coal concentration adjusting device for the medium-speed coal mill is arranged at the upper end of the medium-speed coal mill and comprises a coal dropping pipe, at least four powder outlet pipes, an air powder measuring sensor, an air powder flow adjusting valve, a distributor, a separator, a control system and a manual adjuster, the manual regulator comprises a manual regulating plate, a shaft sleeve, a fork-shaped joint, a first spring, a connecting rod, a fixing plate, a second spring, a crank and a rotating shaft, the fixing plate is uniformly fixed on the outer circumference of the distributor below the powder outlet pipe, one end of the connecting rod penetrates through the fixing plate, and the other end of the connecting rod is fixed together with one end of the fork-shaped joint through a fixing nut; the rotating shaft is sleeved with the shaft sleeve through a bearing, one end of the rotating shaft is fixed to the other end of the crank, and the other end of the rotating shaft extends into the distributor and is fixed to the manual adjusting plate. And the first spring and the second spring are respectively arranged between one end of the connecting rod and the fixing plate and between the other end of the connecting rod and one end of the fork-shaped joint through fixing nuts.

The application discloses a pneumatic valve island intelligent fault prediction method based on multi-protocol integration and belongs to the technical field of pneumatic valve island fault prediction, which comprises the following steps: according to the physical topology and protocol heterogeneous characteristics of a valve island, multi-source sensor data is synchronously collected under the same timestamp benchmark through an integrated multi-protocol edge gateway, and a protocol-aware layer data cube is constructed. The application realizes the paradigm shift from macroscopic pressure determination to microscopic feedforward early warning by constructing the pneumatic valve island intelligent fault prediction method based on multi-protocol integration. Through protocol-aware layer data cube construction, protocol-topology joint feature map fusion, microscopic flow state stability quantification, flow state reconstruction probability prediction, dynamic multi-modal intervention instruction generation, protocol adaptive closed-loop verification and digital twin health simulation, a complete intelligent prediction-intervention-optimization closed loop is formed, the system can intelligently supplement air throughout the whole process, automatically adjusts, realizes valve island zero pipe blockage operation, and significantly improves system reliability and operation efficiency.