In this article, an innovative supervision system will be proposed that can observe and analyze health of Circuit Breaker’s trip coil. The proposed design also logs changes in the coil's quality and informs network supervisor in case of Circuit Breaker (CB) failure. This system injects small direct currents to the Circuit Breaker connections and the trip coil to compute CB’s health and characteristics of trip coil. A large drift such as great change of resistance in coil, connections and switches characteristics can be determined as defection of Circuit Breaker. This supervision system analyzes trip coil health with a microcontroller, logs trip coil condition changes (closed or tripped), failures and CB defection in a multimedia card, shows condition of system via LEDs and LCD and sends needed information for network supervisor via SMS, Telephone line and also applies desired controls to the other appliances through three power relays. Besides, a number of these supervision systems can be networked via Ethernet to be observed and supervised with a web service program or webpage from a control room. تفاصيل المقالة

In this paper, a new scheme for serial communication is proposed. In this method, in addition to the pulse states (high and low), either of negative slope or positive slope of the pulse (saw-tooth waveform) is employed as a representative for another digit. Using pulse slope as a representative for a separate digit will result in sending two-bit-digits using a single pulse, which doubles the transfer rate. The proposed scheme can be used in both synchronized and asynchronized communications and can improve communication speed. Through simulating the proposed scheme, it turned out that this method, because of its proper immunity to noise, can be used as a peripheral interface alongside in-chip communication. The main idea in the raised discussion is to obtain four different geometric pulse shapes acting as four different numbers in the quaternary numeric system, in which it can be serialized/desrialized as easy as pulse states. This proposed method and the suggested system for serialization and deserialization of data can be an adequate alternative in high-speed communication approaches. تفاصيل المقالة