Event Detection Logic Research Articles

Feeding Smart Contract Legal Requirements with Semantic and Event Detection Logic Structures from Modern Service Oriented Supply Chains

This chapter investigates the broad range of real-world applications of smart contracts and relevant rules associated with them by examining the requirements coming from supply chain management and the current technical landscape. Issues such as copyright protection, product delivery etc., have been enforced through various technological means. However, more dynamic means are now needed. The modern supply chain is a complex network of suppliers and creators and it has become increasingly difficult to control and track abnormal conditions occurring during manufacturing, delivery, sale, and management. This chapter will use the AffectUs:TagItSmart semantic and event detection framework as a use case example to demonstrate how the aforementioned concepts could be implemented with relevant pseudo-code that can be used as triggering logic or core rules in potential smart contracts for supply chains. The transformation of these rules and use of semantics will provide a more effective and multi-layered end-to-end supply chain solution that can aid in the integration with a smart contract rationale.

Event-Triggered Vulnerable Relay Identification and Supervision to Prevent Zone-3 Mal-Operations

Most of the recently occurred cascaded outages are resulted due to zone-3 mal-operations of distance relays. This paper introduces some new sensitivity factors to identify and monitor vulnerable relays functioning in the power transmission network. This information will help in enhancing the back-up protection operation of the power transmission system. To accomplish this task, indices such as line-outage-induced relay margin shift factor and generation-outage-induced relay margin shift factor are defined. An offline analysis of the power system is made to calculate the above two factors. This information helps in ranking the relays of the power system in terms of their vulnerability. Once the vulnerable relays are identified, their zone-3 operation is supervised by a new wide area information-based event detection logic. IEEE 9-bus and IEEE 39-bus test systems are used to validate the proposed scheme. The test results indicate that the proposed scheme can enhance the back-up protection operation of transmission network, which is very much essential to mitigate blackouts.

Event-Driven-Based Water Level Control for Nuclear Steam Generators

Safety is a critical issue in nuclear power exploitation and utilization. With respect to a pressurized water reactor in a nuclear power unit, a steam generator is a crucial device, whose water level control performance directly affects the safety and stability of the pressurized water reactor. In this paper, based on an event-driven control methodology, a novel steam-generator water level control strategy is proposed to lower the computing load of the control system and extend the service life of actuators. The theoretic stability analysis for a closed-loop system with an event detector is adequately expressed. The two-degree-of-freedom internal-model-control feedback controller and the dynamic feedforward controller, both of which are triggered by the same event detection logic, are designed to guarantee local performance. In addition, a gain-scheduling measure is adopted to combine local controllers to ensure the overall performance under all power levels. Comparing case studies shows that the proposed control strategy exhibits good capability to manage the utilization of a process control unit and the control action, with no deterioration in the control performance.

Instant Theft Alert and Tracking System in Car

ABSTRACT There are a variety of areas wherein a need exists for a system capable of identifying and tracking the geographic location of a remote valuable object. One such valuable object which requires constant surveillance is car. In order to alert the car owner immediately regarding theft of the car by means of a portable remote receiver, we have come up with an Event Tracking System, which we have discussed in this paper. This system consists of Event Detection Module, Global Positioning System (GPS), Asset Tag and Wireless Network Interface. The Event Detection Module consists of Event detection sensor and Event detection logic. GPS and Asset Tag together determine the location of the car. Wireless Network Interface consists of a transmitter used to transmit signal to the Surveillance Pad wirelessly. The Surveillance Pad consists of processing unit, display and alert system. The predetermined event to be detected in this system is the unlocking of the door of the car. Once the door gets unlocked it will send an alert to the car owner in the form of an alarm or message. This can help the user to take immediate actions. Once the engine starts, the GPS tracking display in the Surveillance Pad will get enabled with an alarm allowing the car owner to track the car and retrieve it.

An advanced computer-based nuclear physics data acquisition system

A collaborating group of Yale and IBM physicists have begun a sequence of particle-gamma correlation experiments at the Yale Emperor tandem Van de Graaff accelerator, where all data acquisition, analysis, display, and experimental control functions are to be performed within the framework of a general integrated hardware-software nuclear physics data acquisition system designed for the IBM System/360 Model 44 scientific computer. The system, developed jointly by IBM Research and the Yale Nuclear Structure Laboratory, is intended to enable physicists to assemble the required hardware and software for any of a wide variety of experimental configurations with a minimum of attention to detail, and to change configuration with ease upon completion of a given experiment.The core of the system is a versatile control interface, which makes it possible to connect any of a modular and compatible series of digital output nuclear instrumentation directly to the computer by merely plugging the component directly into the control unit. Through the device of a diode plugboard, up to twenty-eight components, for which space is provided in the interface, may be designated as belonging to a given event (i.e., a particular interaction which is singled out by the experimenter's event detection logic), and when that event has been detected, the data generated in the components associated with that event, headed by a word identifying the event, are transmitted to the computer completely under channel-interface control in the cycle-steal mode without interrupting the activity of the central processing unit. As many as sixteen such events may be defined and provision is made for sharing a single component among any number of events. The initial system will be provided with 1024-channel 25 MHz ramp-type analog to digital converters, 25 MHz scaler/timers, and “monitor registers”. The latter are provided to allow the system to read standard logic levels, and may be used to connect other parallel output components to the system. Design approaches for a second generation of components with performance specifications significantly superior to those of the initial system have been considered.A set of programs to perform the tasks of data acquisition, data transformation and analysis, experiment control, and CRT display is in preparation. These subroutines, compiled by a FORTRAN-like language, provide light pen as well as conventional means of communication between physicist and computer, and are intended to make the computer-based system as easy to use as a fixed wire multiparameter analyzer, with significant improvement in flexibility. The on-line processing routines will be embedded in a multiprogramming supervisor, so that compiling and debugging of process and non-process programs and general scientific computing may proceed simultaneously with on-line experiment processing when excess computing power is available.