The Rating Design Of Defending Thunder Device SPD Product

This system is developed according to the book of?The united technical measure for the thunder avoided designing of the buildings in Changchun city?which issued on August 25th 2003 by the Changchun committee of city and countryside construction and the leading group of thunder avoiding of Changchun. This system applies to the implements such as Visual Basic, Microsoft Access and so on. There are six parts in this designing which are separately called: the calculation of lightning rod, the risk evaluation of lightning strike, the lightning avoided electromagnetic pulse, the classification for low-pressure switch, the recording of SPD and cleaning up the calculational results. This designing can not only save a big deal of men power but also advance the veracity of calculation greatly, otherwise, it is really a nice designing which owns a simple manipulate. You can apply it skilly in quite soon.This sheet of dissertation rigorously enforce in accordance the fundamental rule of software engineering , the introduction of system native systematic development process , consists of feasible quality pestles to go into—to be underway to the problem definition talkes about that the system is living the technique and economy and operation tripartite feasible quality ; Need request the branch—separating definite system what have to have the meritorous service be able to and performance , the operational environment that the system is requireed , data flow in the analytic system and data storage which over a long period of time employd ; General part of the body is build up calculateing in the—'s definite system house allocation plan, and then fiing to address respectfully system every one program organization ; Target system what is concretely minutely carefully build up to calculate—to fix with achieving the demand , layout procedure " blueprint".