3results about How to "Reduce transmission errors" patented technology

This invention discloses a method for distinguishing and marking multiple foreground objects in image data streams. The steps include: 1) connecting a camera to an FPGA, whereby the camera transmits the acquired fiber optic unit array image to the FPGA line-by-line in real-time in a streaming manner; 2) the FPGA detects the received image pixels, identifies and marks the light spot pixels; 3) the FPGA calculates the optical centroid coordinates of the corresponding light spot pixels based on the marked light spot pixels. This invention can process the image data stream in real-time at the image acquisition end, distinguishing and marking each fiber optic light spot pixel. This allows for real-time calculation of the light spot centroid at the image acquisition end while maintaining accuracy, thereby greatly reducing data transmission volume and enabling the host computer to obtain the optical centroid coordinates of the fiber optic unit in real-time. This provides an accurate and real-time labeled image data stream for subsequent optical centroid calculation, thus improving overall positioning efficiency.

This invention discloses an OTA upgrade and rollback method for an electric two-wheeled vehicle controller and an electric two-wheeled vehicle. The controller includes an MCU and a Bluetooth chip. The MCU's flash memory is divided into a bootloader guidance area and an APP running area, while the Bluetooth chip's flash memory is divided into a Bluetooth APP area and an MCU program backup area. The method includes: after the controller is powered on, the MCU chip enters the guidance area, detects a valid upgrade flag, backs up the current firmware in the APP running area, and encrypts and transmits it to the backup area. After the backup is completed, an OTA upgrade is performed. After the upgrade is completed, the guidance area verifies the upgraded firmware in the APP running area. If the verification passes, it jumps to the running area and sets the upgrade flag to invalid; if the verification fails, a rollback process is triggered. The guidance area decrypts the firmware stored in the backup area and rolls it back to the APP running area. By utilizing the remaining space resources of the Bluetooth chip, the overall resource utilization efficiency of the controller is improved.

The utility model discloses a kind of chuck mechanical hand structures of injection molding machine, belong to injection molding machine auxiliary equipment technical field, it includes fixed bolster, fixed bolster is rotatably connected with screw rod, gas pipe and first connecting pipe interface place are respectively connected with outer power source, fixed block is integrated with the driving mechanism used in cooperation with cooperation pressure sensor and outer power source, exhaust block is located below chuck main part;The utility model controls screw rod rotation by driving mechanism, drives movable block to move along screw rod axial direction, realizes accurate positioning in horizontal direction, electric telescopic link and screw rod collaborative action, workpiece is moved to specified position, outer power source is broken vacuum by a small amount of gas, exhaust block is synchronously moved downward, auxiliary stripping workpiece, by the cooperation between high-pressure airflow and semi-arc exhaust block, effectively remove workpiece surface pollutant, applicable to oil stain and dust in injection molding environment, double-layer suction nozzle structure reduces the risk of pollutant into chuck interior, prolongs service life.