Alpine Electronics, Inc.

Northeastern University

Nan Wang

Bo Zou

Jun Yang

Huaguang Zhang

Jian Feng

Dongsheng Yang

Zhiliang Wang

Yanhong Luo

Guotao Hui

XuanZhe Peng

Xue Liang

Provided are a bypass type 220V grid voltage sag prevention device and a control method therefor. The bypass type 220V grid voltage sag prevention device comprises an AC-to-DC energy storage unit, a Single Chip Microcomputer (SCM) control and display unit, and an inverter output unit. The AC-to-DC energy storage unit comprises a rectifier circuit, an energy storage control circuit and a quick tank circuit; the SCM control and display unit comprises an SCM, a DC step-down module circuit and an energy storage voltage detecting circuit; and the inverter output unit comprises a high-frequency PWM generating circuit, a high-frequency transformer output circuit, a transformer output full-bridge rectifier circuit, a PWM generating circuit, a PWM driving and full-bridge inverter circuit, a 220V grid zero-cross point detecting circuit, a 220V grid voltage detecting circuit, a 220V grid and inversion AC converting circuit, and a signal interface circuit.

Bypass type 220V grid voltage sag prevention device and control method therefor

In a daytime and nighttime image recognizing method and apparatus, the method comprises predefining an air region and a terrestrial region for each image captured by a camera apparatus; inputting an image captured by the camera apparatus; calculating a lightness value histogram for the air region of the input image; and determining a lighting condition of a photo environment of the camera apparatus based on the lightness value histogram for the air region of the input image. The daytime and nighttime image recognizing method and apparatus are able to correctly recognize the lighting condition of the environment even if the air region in an image is obstructed by a background or there are no lane lines in an image. Moreover, when an erroneous recognition occurs for an individual image, the interference caused by the erroneous recognition can be precluded efficiently.

Daytime and nighttime image recognizing method and apparatus

A vehicle side image recognition method and apparatus inputs images containing recognized vehicles captured by a camera apparatus; sorts images with the recognized vehicles located at left and right sides of the camera apparatus from the input images; performs vehicle side image recognition processing on the sorted images to acquire side image information of each of the recognized vehicles; and outputs the acquired side image information of each of the recognized vehicles. An assisted driving system may use the vehicle side image information to analyze the relative movement of an object vehicle and other vehicles more comprehensively, thus greatly improving the traveling security of a vehicle.

Vehicle side image recognition method and apparatus

Growing community of inventors

Shenyang, China

Nan Wang