Авіаційно-космічна техніка та технологія (Oct 2024)
Prototyping of reliable notebooks based on simple replaceable components
Abstract
The subject of study in this article and research is principles of creating of reliable and repairable notebooks. The goal is to determine the structural and circuitral peculiarities of the construction of portable computers and laptops, which improve fault tolerance, repairability, allow possibility of power supply using wider voltage range, and also reduce the cost of repairing, which makes it possible to create more reliable solutions with fault tolerance. The task is to analyze the existing architectures of computers built on modern chipsets; to analyze cases of failure of the computer equipment regarding the causes and consequences of faults; to analyze the possible reasonability of repairing and the computer repair options; to propose recommendations of the structural organization of notebook components and the recommendations for the support of a wide range of notebook voltages of power supply. According to the tasks, the following results were obtained. The analysis of the constructional design features of modern laptops and portable computers is performed. The main components of notebook motherboard, including the processor, multicontroller, and host bridge, are analyzed. The possible causes of faults of system board components are analyzed. The interaction of the multicontroller with BIOS and UEFI of notebooks is analyzed. The causes and solutions of possible issues of battery replacement are identified. The disadvantages of direct wired connection of peripheral devices to the processors implemented as a system on chip are discussed. The recommendations of the creation of repairable circuits of notebooks are proposed. The proposed circuits have a higher cost, weight and size characteristics with higher power consumption, but the obtained fault-tolerance allows the use in critical industries. Conclusions. The scientific novelty of the obtained results is in the fact that the performed analysis of solutions from leading manufacturers and the practical experience of laptop failures diagnostics allowed to propose a set of recommendations of the reliable laptops creation and modification of the existing components including the suppor of a wide range of power supply voltages, that will make it possible the charging from power sources without the use of an additional converters. The proposed use of discrete components and controllers for each interface port for connection of peripheral devices increases the system durability to the influence of external factors with maintaining of workability of the notebook and the rest ports of motherboard in case of the fault of one of them.
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