Aiming at the poor generalization ability of the BP network used in industrial instrumentation identification

a new method that constructs virtual samples by using seven-segment code yards segment method is proposed.The BP network trained with the new training set which contains virtual samples is studied

and it discovers that it has better generalization ability than the BP network trained with the original training set

which does not contain the virtual samples.The experimental results show that the constructing method of the virtual samples is effective and reasonable.