China Jiliang University

Hangzhou Chnspec Technology Co. Ltd

Shangzhong Jin

Kun Yuan

Liang Chen

Jianfeng Wang

Yiping Wu

Yi Li

Chenxia Li

Cong Wang

Zaixuan Zhang

Songyuan Cen

Huaizhou Jin

Kaiyuan Liu

Huaping Gong

A road lamp control method is disclosed, comprising steps of determining whether a road lamp lighting condition is satisfied, and controlling the road lamp lighting time period. The method can control ON and OFF and the brightness of the road lamps in real time based on the real traffic flow at night, and thereby ensuring safety of pedestrians and vehicles and saving electrical energy.

Road lamp control method

The present disclosure provides a spectrophotometric colorimeter based on LED light source, wherein the spectrophotometric colorimeter includes an integrating sphere, a coupling light path, and a spectrometer. An inner wall of the integrating sphere is arranged with a composite light source consisting of eight LEDs; a sphere wall of the integrating sphere defines an incident aperture; light emitted from each LED enters an interior of the integrating sphere through the incident aperture and is irradiated onto the inner wall. The coupling light path is configured to couple light at a measurement caliber such that the light can enter an incident split and to eliminate stray light from the inner wall. After emitting out from an observation aperture of the integrating sphere, the light enters the incident split through the coupling light path and is irradiated onto a linear-array sensor after being split by a spectral light path; and different pixels of the linear-array sensor correspond to light radiation strengths at different wavelengths.

Spectrophotometric colorimeter based on LED light source and method for realizing the same

A distributed optical fiber sensor based on Raman and Brillouin scattering is provided. The distributed optical fiber sensor includes a semiconductor FP cavity pulsed wideband optical fiber laser (), a semiconductor external-cavity continuous narrowband optical fiber laser (), a wave separator (), an electro-optic modulator (), an isolator (), an Er-doped optical fiber amplifier (), a bidirectional coupler (), an integrated wavelength division multiplexer (), a first photoelectric receiving and amplifying module (), a second photoelectric receiving and amplifying module (), a direct detection system (), a narrowband optical fiber transmission grating (), a circulator () and a coherence detection module (). The temperature and the strain can be measured simultaneously, and the signal-to-noise ratio of the system is enhanced.

Distributed optical fiber sensor based on Raman and Brillouin scattering

Growing community of inventors

Hangzhou, China

Shangzhong Jin