4results about How to "Increase insensitivity" patented technology

The embodiment of the invention provides a single-channel electroencephalogram sleep analysis method and related equipment, and belongs to the technical field of electroencephalogram signal processing and sleep health monitoring. The method comprises the following steps: carrying out preprocessing and time sequence enhancement on a single-channel electroencephalogram signal; extracting local and global features by using a double-branch feature encoder; feature distribution alignment between a source domain and a target domain is realized through a double-contrast adversarial learning module in combination with cross-view time sequence contrast learning and conditional adversarial alignment; dynamically adjusting a target domain sample weight based on information gain through a learnable reweighting module so as to correct label distribution offset; and finally, high-precision sleep staging or OSAHS event detection is realized by utilizing a classifier. According to the method, the generalization ability and robustness of the model in a cross-subject scene are remarkably improved, accurate analysis can be achieved only through single-channel electroencephalogram signals, the hardware cost and the use threshold are reduced, and the method is suitable for scenes such as family sleep monitoring and telemedicine screening.

The application discloses a switching rate adjustable electric signal routing device based on coupled topological edge states, and relates to the electronic information technical field.The electric signal routing device comprises an input port, a first output port, a second output port and a topological circuit module.The topological circuit module is composed of a first resonator subarray and a second resonator subarray which are connected by a third coupling element and have the same structure and topological edge states, so that the topological edge states of the two are coupled with each other to form symmetric and antisymmetric coupled topological edge states.The input port and the first output port are connected to positions of the topological edge states of the first resonator subarray, and the second output port is connected to a position of the topological edge state of the second resonator subarray.The function of switching signals to the first output port or the second output port at different switching rates is realized by adjusting the voltage of the excitation signal.The application has the advantages of simple structure, strong robustness based on the topological protection mechanism and no need of an additional control signal.

The application relates to a circuit structure and working method of a micro gas sensor array, and belongs to the technical field of integrated circuits. The circuit structure comprises a multiplexer (MUX), a programmable gain amplifier (PGA), a low-pass filter (LPF), a driver (Drive), a successive approximation register analog-to-digital converter (SAR ADC), a digital control module (Digital Control) and an IIC interface for communication. In view of the demand for high precision and strong robustness of sensor signals, a common-source common-gate floating reverse dynamic amplifier is adopted in a SAR ADC noise shaping circuit, so that the insensitivity of the circuit to process, voltage and temperature (PVT) changes is significantly improved; the number of voltage-controlled delays in a time domain comparator (COMP) is increased, so that input reference noise is reduced; a hundred-nanosecond-level super-long delay module (DELAY) is integrated after asynchronous SAR logic, so that SAR ADC sampling errors are effectively reduced, and the measurement precision of the whole system is improved.

The present application relates to the field of optical imaging technology.The present application relates to an optical AI coding optical imaging system based on optics.The system comprises a mask plate adding unit, a blurred image unit, a phase parameter unit, an AI coding unit and a decoding recovery unit;the mask plate adding unit is used for obtaining a pupil specification, then a non-rotationally symmetric phase mask plate is added at the pupil according to the pupil specification, and the sensitivity of different parameter combinations to defocus aberration is simulated for the phase mask plate;by adding the non-rotationally symmetric phase mask plate at the pupil, combined with the non-focal point phase modulation plate to form a synergistic effect, the target can be imaged in a long dynamic range without zooming and focusing, meanwhile, the phase modulation depth and mask size of the phase mask plate are completely matched with the pupil specification, the non-focal point phase modulation plate adopts a non-rotationally symmetric phase distribution, and the two cooperate to strengthen the insensitivity of the system to the defocus of the image plane, so that the blurred modes of imaging at different defocus positions in a large focal depth range are consistent.