TITLE:
Improvement and Design of Transmitter Modifier Wind Cooling Protection for CINRAD/CB Weather Radar
AUTHORS:
Shi Zheng, Guan Wang, Xingyou Huang, Chuanhai Miao, Wanru Xing, Simeng Chen, Boshi Kang
KEYWORDS:
Improvement and Design, Transmitter Modifier, Wind Cooling Protection, CINRAD/CB Weather Radar
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.6 No.11,
November
30,
2018
ABSTRACT: Doppler weather radar has important applications in measuring the intrinsic
factors of cloud, rainfall and various convective weather occurrences. Among
them, CINRAD/CB Doppler weather radar is based on the requirements of the
China Meteorological Administration and many units have been provided. The
modulator is a critical part of the transmitter’s high voltage, where high voltage,
high current, and energy conversion are concentrated. It is therefore necessary
to redesign the transmitter modulator cooling system protection. This article
describes the new design of hardware and software solutions. The fan is a
DV5214/2N DC fan from Ebmpapst, Germany. The speed is up to 5000 rpm, the
power is 18.5 W, and the single fan current is about 0.8 A. It is powered by 28 V.
The protection board uses a DC/DC module to output a 5 V voltage and a 3.3 V
voltage adjustment chip LM1117. The embedded web software is based on the
TCP/IP protocol stack provided by MICROCHIP. After the cooling system is
designed and installed in the radar station in Xi’an, China and other places, after
long-term operation, the comprehensive test shows that the system runs well.