UAV Behavior-Intention Estimation Method Based on 4-D Flight-Trajectory Prediction
11
Citation
7
Reference
10
Related Paper
Citation Trend
Abstract:
Aiming at the limitation of the traditional four-dimensional (4-D) trajectory-prediction model of unmanned aerial vehicles (UAV), a 4-D trajectory combined prediction model based on a genetic algorithm is proposed. Based on historical flight data and the UAV motion equation, the model is weighted dynamically by a genetic algorithm, which can predict UAV trajectory and the time of entering the protection zone instantly and accurately. Then, according to the number of areas where the tangent line of the current trajectory point intersects with the collision area, alarm area, alert area, and the time of entering the protection zone, the UAV’s behavior intention can be estimated. The simulation experiments verify the dangerous behaviors of UAV under different danger levels, which provides reference for the subsequent maneuvering strategies.We investigated a driver adaptive alarm which is triggered based on individual driving styles. Two kinds of alarm timing were considered in this research: (1) An alarm is given at the timing of ordinary accelerator releasing, (2) An alarm was given at the timing of ordinary brake implementing. We compared the two alarm timings and found that both alarm timings were acceptable from the view point of trust in warning systems. However, for drivers who have particular characteristics of driving style, e.g., drivers who tend to implement the brakes very early or very late adapting the alarm timing simply to the brake implementation timing may impair the alarm effectiveness.
Cite
Citations (0)
Shut down
Guideline
Cite
Citations (0)
This paper describes the application of the sensors in vehicle anti-theft alarm,Tire undervoltage alarm,engine temperature alarm,oil pressure system,alarm,drink driving alarm,reversing in anti-Collision alarm.The article summarizes the new method of sensors in the car when a dangerous situation can accurately detect,alarm and promptly cut off the engine oil.It provides a new program to enhance the safety of motor cars.
Reversing
Cite
Citations (0)
Medical device alarm incidents resulting in patient deaths or inappropriate patient care have been a persistent problem for several years. A condition known as alarm fatigue has been identified as a precursor to medical device alarm adverse events. This article reviews the complexity of the medical device alarm conundrum and identifies specific event moderators as an exercise in systems science. A definition of alarm fatigue is presented, and plausible actions to prevent future medical device alarm events are suggested.
Cite
Citations (0)
We investigated effects of missed alarms on driver's braking behaviour in response to alarm timing. By using a driving simulator, two kinds of alarm timing for forward collision warning systems were compared: (1) an alarm was given based on ordinary braking behaviour for the individual; alarm timing T, (2) an alarm was given by using an particular alarm trigger logic (Stopping Distance Algorithm); alarm timing S. It was found that compared to alarm timing S, alarm timing T had the potential to reduce negative effects of missed alarms on braking behaviour. Moreover, effects of missed alarm s on driver's trust may depend on alarm timing.
Alarm signal
False alarm
Cite
Citations (0)
A first-out alarm is an alarm that comes first in a group of highly correlated alarms. To achieve alarm reduction, it is highly recommended in industrial alarm management standards to only present first-out alarms to operators, whereas consequential alarms should be silenced or suppressed using first-out display or logic alarm suppression in ANSI/ISA-18.2. However, to collect such groups of correlated alarms and identify first-out alarms from them usually relies on proficient knowledge and experience, and thus is time and resource intensive. This work proposes a data driven method to detect first-out alarms from historical alarm data. Two main steps are involved: 1) consequential alarms are detected for each unique alarm based on alarm occurrence events; 2) first-out rules are produced and pruned based on redundant alarm analysis. The effectiveness of the proposed method is demonstrated by an industrial case study involving alarm data collected from a real industrial facility. The detected first-out rules can be used as candidates to design first-out display or logic alarm suppression strategies in practice.
Cite
Citations (2)
Alarm signal
Cite
Citations (0)
A regional alarm and monitor system is realized through CATV-network. Two-way data transmission is performed through the network and an alarm center is set up within a small region, and an alarm terminal is installed at the subscriber end. The system composition, operating principle, software and hardware are given. When alarm-case occurs, the alarm terminal transmits a signal to the alarm center, which includes address information, alarm situation, operating status of the alarm terminal and so on. Likewise, the alarm terminal can execute commands received from the alarm center, such as set-up alarm, shut-up alarm and status polling.
Alarm signal
Terminal equipment
Cite
Citations (0)
This article addresses the need of including acoustical perspectives in the debate on alarm fatigue within the healthcare domain. We show how conceptualisations and proposed solutions to alarm fatigue are unequally distributed across what could be called the ‘alarm chain’: a generic model of the core structural elements and dynamic relations that constitute any alarm scenario. A focal point in the alarm chain – the ‘alarm mediation cleft’ – seems to divide the alarm fatigue literature from the segment of the alarm literature that deals with auditory alarm design. The current healthcare discourse on alarm fatigue is centred around the ‘premediated alarm phase’, which has the consequence of an unfortunate dichotomous approach to the functionality of sound. We address some shortcomings of this approach and outline some methodological implications and potentials of searching for signs of alarm fatigue in the ‘post-mediated alarm phase’.
Alarm signal
Cite
Citations (14)