2results about How to "No shock" patented technology

The application provides a control system of a laser pumping source constant current driver and a DSP digital processing chip, the control system of the laser pumping source constant current driver is realized based on the DSP digital processing chip, a control loop capable of generating and outputting a driving PWM signal is arranged in the DSP digital processing chip, a closed-loop, digitally designed voltage control loop and a current control loop are arranged in the control loop, and the voltage control loop and the current control loop alternatively output driving control PWM signals. The application has the beneficial effects that the rising and falling edge time of the output current is faster, the current dynamic overshoot is lower, and the device output is stable and free of oscillation.

The application relates to a vehicle early warning method and device, electronic equipment and a vehicle. The method comprises the following steps: acquiring multi-dimensional sensing data of a target object and weights of the sensing data in real time, determining a target covariance matrix according to the sensing data and the corresponding weights, wherein the target covariance matrix is used for indicating a distribution range of a target object position estimation; performing smoothing filtering processing on the target covariance matrix to obtain a smoothed target covariance matrix; performing eigenvalue decomposition on the smoothed target covariance matrix to obtain an eigenvalue ratio, and updating the weights of the sensing data according to the eigenvalue ratio to iteratively update the target covariance matrix; and if it is determined that the target object has an intention to cut into a lane where a target vehicle currently locates according to the real-time updated and smoothed target covariance matrix, performing a pre-warning operation. The application improves the accuracy of pre-warning execution.