In order to improve the ability of DC voltage withstand and local discharge test, this paper designed the first domestic 2400kV/30mA DC non-local discharge test device with the world's advanced level, which fills the gap of domestic 1000kV and above voltage test ability. The whole set of equipment adopts tower structure and modular transportation, which can be quickly built on site and improve working efficiency. Since the whole set of equipment is very heavy and high, this paper carries out strength check and simulation of the base frame support components from the perspective of mechanical engineering, and carries out 8 level wind strength check on the whole. The designed device meets the strength requirement.
Multi-MCU system architecture is often needed in applications that require parallel completion of multiple tasks or matrix control applications. When multiple Flash-less MCUs are used in the system, in order to make the system start normally, the general practice is to configure the special program Flash for each MCU to start, which not only increases the hardware cost, but also brings challenges to the mass production of products and subsequent program upgrades. In this paper, we introduce how to use MCU's I2C ISP to realize multiple MCU to share the same Flash to boot, and describe the implementation process and difficulties in detail. The results show that the method of multiple flash-less MCUS sharing a single Flash boot is feasible in practical application.
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