3results about How to "Eliminate precision issues" patented technology

This invention discloses an intelligent adaptive dose verification calculation method and system. The intelligent adaptive dose verification calculation method includes: obtaining preliminary dose distribution data for a patient based on a deep learning-based dose prediction model; dynamically assigning variance reduction parameters to particles in a Monte Carlo simulation based on the high and low dose distribution information in the preliminary dose distribution data, wherein the variance reduction parameters include simulation weights, with simulation weights assigned to particles predicted to be in high-dose regions being less than those assigned to particles predicted to be in low-dose regions; and using a Monte Carlo dose calculation engine, simulating the planned beam based on the dynamically assigned variance reduction parameters to obtain high-precision verification dose distribution data. This invention's intelligent adaptive dose verification calculation method ensures the physical authenticity of the final verification dose distribution and the credibility of the "gold standard."

This invention discloses a DC ultra-high voltage measurement sensor. The sensor includes a detection electrode, a shielding shell, an insulating layer, an ion current guiding electrode, and a core sensitive element. An installation space is provided inside the shielding shell, and the core sensitive element is disposed within the installation space. A sensing space is provided outside the shielding shell, and the detection electrode, insulating layer, and ion current guiding electrode are disposed within the sensing space. A pair of detection electrodes are correspondingly disposed on both sides of the sensing space. One end of the detection electrode is connected to the shielding shell through the insulating layer, and the other end of the detection electrode is connected to the ion current guiding electrode through the insulating layer. The ion current guiding electrode and the pair of detection electrodes semi-enclose the sensing space, with the ion current guiding electrode directly corresponding to and receiving the ion current. The core sensitive element is connected to the detection electrode via a wire. This sensor ensures the stability and reliability of the sensor during long-term operation in ultra-high voltage / ultra-high voltage DC environments.

The invention provides a stope filling roof contact monitoring device and method based on laser-ultrasonic dual modes, and relates to the technical field of mine filling mining. The monitoring device comprises a signal transmitting module and a signal receiving module, the signal transmitting module comprises an ultrasonic transmitting module and a laser transmitting module, and the signal receiving module comprises a laser receiver and an ultrasonic receiver. The monitoring method comprises the steps of installing the signal transmitting module and the signal receiving module, verifying the stability of a signal link, and monitoring by the monitoring device. According to the monitoring device and method, a laser mode and an ultrasonic mode are applied at the same time, the precise positioning characteristic of a laser signal and the global coverage capacity of an ultrasonic signal are utilized, the complementary monitoring advantage is formed, the blind area and the precision defect of single signal monitoring are effectively eliminated, and whole-course real-time uninterrupted judgment of the filling body roof contact state is achieved. The device adopts a modular design and installation mode, the underground operation process is greatly simplified, the filling operation quality and efficiency are improved, and reliable technical support is provided for filling operation.