scholarly journals Design and realization of wireless communication interface of portable single vehicle simulation tester

2021 ◽  
Vol 183 ◽  
pp. 425-431
Author(s):  
Yao Xiaofeng ◽  
Liu Yuchen ◽  
Nie Jing
Author(s):  
William C. Bailey ◽  
Judy Che ◽  
Poyu Tsou ◽  
Mark Jennings

Integrated vehicle simulation models are being increasingly used to improve engineering efficiency and reduce the number of real-world prototypes needed to understand vehicle attributes and subsystem interactions. Each domain within the vehicle must be represented by its own model developed with the appropriate operating ranges, behaviors, fidelity, and interfaces needed to interact appropriately with other domains in the vehicle. Planning and managing the development of these models across a large, multidisciplinary group of engineers can be a significant effort. In particular, carefully managing each model’s interfaces is crucial to enabling the entire process; missing or inappropriately used signals can cause significant issues when many separate domain models are integrated into a single vehicle model. To help system engineers better manage these interfaces across a broad variety of applications, a SysML-based modeling approach is proposed to describe these models and their interfaces formally and completely. However, even with a consistent modeling approach, creating and managing the interfaces across a large number of domains and applications can be a significant, error-prone task. To reduce the amount of manual modeling work required to maintain and update Simulink model interfaces, an interface management toolset is proposed to help automate the process of importing existing interfaces, routing and visualizing them, and exporting model templates for developers to use when creating new models. By automating this process, it becomes significantly easier to reuse models across vehicle platforms (rather than creating new models from scratch) and frees up resources to create more accurate simulations throughout the system design process.


Author(s):  
Praprut Songchitruksa ◽  
Srinivasa Sunkari ◽  
Ines Ugalde ◽  
Justinian Rosca ◽  
Juan Aparicio Ojea

The effects of realistic wireless communication are important for the modeling and evaluation of emerging connected and automated vehicle applications. This paper discusses the development of a novel closed-loop connected vehicle analysis system (CONVAS) interlinking Vissim microscopic traffic simulation and ns-3 wireless communication simulation. In CONVAS, ns-3 uses Vissim’s vehicle positions for wireless modeling and in turn Vissim uses the packet reception from ns-3 to modify vehicle behaviors. The authors propose an application for intelligent avoidance of the dilemma zone to demonstrate the use of the platform for modeling connected and automated vehicles and to illustrate the effects of communications on the application performance. A simulation experiment was conducted with a test bed for an isolated high-speed, fixed-time signalized intersection with different communication model configurations. The evaluation results showed that the effectiveness of the application as measured by successful clearing of vehicles from the dilemma zone depended greatly on performance of wireless communication.


2010 ◽  
Vol 34 (3) ◽  
pp. 172-177
Author(s):  
Ernesto Velarde Reyes ◽  
Francisco Marante Rizo ◽  
Belkis Morgalo Santos ◽  
Jorge Garrote Jorge ◽  
Francisco Martin Gonzalez

This research work is aimed at developing a low-cost security device for intrusion remote sensing, and sends alert notifications to a cloud platform. This device is basically composed of a passive infrared sensor (PIR), an MCU ESP32 microcontroller with integrated Wi-Fi interface and a SIM800L GSM modem. The proposed device incorporates fault tolerance in communication links, integrating dual wireless communication technologies, to guarantee the sending of alerts to the cloud-based framework. The algorithm that has been designed for the microcontroller are enriched with intelligence to detect when a communication service is available or not, and choice best option between the interfaces. Moreover, the device is able to notify alerts via SMS directly to the user's mobile. This solution has proven to be effective not only in the field of security, but it also has applications in scenarios where nodes are required to acquire information from remote sites via telemetry, with guarantees on information delivery.


Sign in / Sign up

Export Citation Format

Share Document