دانلود کتاب مهندسی نرم‌افزار و مدیریت، نظریه و کاربردها، جلد ۱۸

Electronic equipment assembly is conducted as part of the practical test in the National Trade Skill Test & Certification (NTSTC) [1–4]. This test identifies two major issues related to standardizing quality evaluation and formulating evaluation criteria. In this study, the target PCB assembly consists of electronic components mounted on a printed circuit board, hereinafter referred to as “PCB components.” The first issue is that product evaluation is performed manually, which may lead to inconsistencies due to factors such as prolonged work periods. The second issue is that the current skill certification system formulates evaluation criteria by analyzing product specifications, meaning that a new set of evaluation criteria must be created each time a product with new specifications is evaluated–an approach that requires significant time and labor. An effective solution to the first issue is a technology that enables automated product evaluation based on photographs in accordance with specified criteria. To address the second issue, specifications described in work instructions can be extracted automatically and structured into a database. However, integrating these two approaches to achieve automated product evaluation based on a structured database of product specifications introduces a new challenge: defining clearly which PCB components in the photographs correspond to evaluation criteria stored in the database. Specifically, this requires associating the component numbers stored in the database with images of individual PCB components extracted from product photographs. Therefore, this study focuses on PCB assembly as part of electronic equipment assembly and proposes a technology for linking PCB component positions in photographs with their corresponding component numbers in work instructions. The objective is to reduce the manual workload associated with component identification. The structure of this paper is as follows. Section 2 discusses issues in the electronic equipment assembly test of NTSTC and presents a conceptual framework for addressing them. Section 3 provides an overview of related research. Section 4 describes the proposed method for linking component images with component numbers. Section 5 discusses the evaluation methodology and results of the proposed approach.