The organization of the totally self-checking integrated control circuit based on the Boolean complement method up to «2-out-of-4» constant-weight code

Abstract

The article considers the problem of the synthesis of a self-checking integrated control circuit with optimization of structural redundancy using the Boolean complement method up to 2-out-of-4 constant-weight code. A method for determining the values of control functions is developed, which makes it possible to set their appearance step by step, this ensures the solution of the problem of testing the corresponding elements of addition by modulo two and the tester circuit. In this case, uncertainties are introduced into the values of functions, which makes it possible to minimize the functions themselves, and, accordingly, simplify the circuit of check logic block. The method of constructing the control scheme by the method of logical addition for the 2/4-code is universal, and taking into account the fact that 2/4-TSC has a simple structure, it allows synthesizing embedded control schemes with structural redundancy not exceeding the redundancy of the control scheme when using the duplication method. Such a conclusion can be made on the basis of a large number of experiments on the use of equilibrium codes in the organization of self-verified control schemes

Keywords

• схема встроенного контроля
• логическое дополнение
• равновесный код
• код «2 из 4»