4results about How to "Reduce output delay" patented technology

The invention discloses a DC load drive protection circuit, including a power control circuit, a current signal acquisition and conditioning circuit, a comparison circuit and a logic judgment circuit; the power control circuit controls the MOSFET power tube to be turned on and off through a photoelectric coupler and a voltage-dividing resistor, and the power circuit adopts a MOSFET power tube and a power relay series structure; the current signal acquisition and conditioning circuit converts the current signal into a voltage signal through an isolated current sensor, and the voltage signal enters the comparison circuit after being processed by a differential amplifier circuit; the comparison circuit compares the overcurrent signal voltage value with the overcurrent threshold value and outputs an overcurrent protection signal; the logic judgment circuit receives the overcurrent protection signal, and after performing an OR operation with the CPU circuit output control signal, outputs the MOSFET power tube control signal to the power control circuit to control the MOSFET power tube to turn off the protection. The invention has strong real-time performance, simple circuit design and high reliability.

The invention relates to a radial artery ultrasonic echo signal processing device and method based on a CORDIC algorithm, belongs to the field of digital signal processing, and solves the problems of low operation speed, high resource consumption and low practicability when an existing CORDIC algorithm is applied to an ultrasonic signal processing device. The radial artery ultrasonic echo signal processing device comprises a dynamic filtering module based on a radix-4CORDIC algorithm, an orthogonal demodulation module based on a mixed coarse and fine tuning CORDIC algorithm and a logarithm compression module based on an improved extended hyperbolic CORDIC algorithm. And the processing module is used for extracting components with diagnostic value in the ultrasonic signal and filtering noise to obtain a filtered ultrasonic signal, orthogonally demodulating a frequency mixing signal formed by the carrier frequency signal and the filtered signal to obtain a demodulated ultrasonic signal, and compressing the demodulated ultrasonic signal to an imaging range which can be presented by a display. Based on the technical scheme of the invention, the ultrasonic signal processing device with high speed, high performance and practicability can be designed on the whole.

The invention belongs to the technical field of target tracking, and discloses a high-precision target tracking method capable of preventing perception loss, which comprises the steps of recording target structured data by using a camera before a target enters a basement, making a feature vector, detecting a target object by using a laser point cloud feature map, making the feature map into the feature vector, and tracking the target object by using the feature vector. And the target client sends a positioning position to the basement, clock synchronization is carried out on the camera feature vector, the laser feature vector and the positioning position, cross multiplication is carried out on the camera feature vector and the laser feature vector, and the similarity is calculated. According to the application, an active positioning system is combined, original isolated systems are integrated, the anti-lost capability is improved, active positioning data are not added with features, checking is facilitated, three-dimensional data of laser is used for preventing lost, the tracking capability is remarkably improved, a laser radar feature map is directly utilized, multiple sensors are used, and target feature description is richer.

This invention belongs to the field of aircraft assembly technology, specifically disclosing a method for measuring wing and fuselage assembly deformation based on a neural network model. The method includes: acquiring image data from multiple different assembly areas using digital image correlation; preprocessing, quality assessment, and simplification of the image data; expanding the dataset based on the preprocessed image data; constructing customized neural network models for different assembly areas and training the models using image data from the corresponding areas; deploying the trained neural network models to edge computing nodes; and acquiring image data from different assembly areas in real time to obtain deformation data. This invention significantly improves the accuracy, real-time performance, and system reliability of deformation measurement by adapting the customized network to the deformation characteristics of different areas and enhancing anomaly recognition capabilities through mixed datasets, thus meeting the industrial needs of online measurement for wing and fuselage assembly.