This document discusses real-time systems and operating systems. It defines real-time systems as those that must complete work and deliver services on time. Hard real-time systems have fatal consequences for missed deadlines, while soft real-time systems have degraded performance. Real-time operating systems use scheduling algorithms like priority scheduling to deterministically allocate CPUs and resources. They also address issues like priority inversion and interrupt handling to ensure timing constraints are always met.
In this ppt you will learn about the various memory and its types inside the computer. The ppt also describes an analogy for your better understanding. Hope it will be fun learning.
In this ppt you will learn about the various memory and its types inside the computer. The ppt also describes an analogy for your better understanding. Hope it will be fun learning.
Embedded application is a software application, basically written to control the devices or machines. DT offers a range of embedded software development services in the domain of embedded product.
Challenges faced during embedded system design:
The challenges in design of embedded systems have always been in the same limiting requirements for decades: Small form factor; Low energy; Long-term stable performance without maintenance.
EMBEDDED SYSTEMS SYBSC IT SEM IV UNIT V Embedded Systems Integrated Developme...Arti Parab Academics
Design and Development: Embedded system development Environment – IDE, types of file generated on cross compilation, disassembler/ de-compiler, simulator, emulator and debugging, embedded product development life-cycle, trends in embedded industry.
RTOS-MicroC/OS-II
It is a priority-based real-time multitasking operating system kernel for microprocessors, written mainly in the C programming language.It is intended for use in embedded systems.
Embedded application is a software application, basically written to control the devices or machines. DT offers a range of embedded software development services in the domain of embedded product.
Challenges faced during embedded system design:
The challenges in design of embedded systems have always been in the same limiting requirements for decades: Small form factor; Low energy; Long-term stable performance without maintenance.
EMBEDDED SYSTEMS SYBSC IT SEM IV UNIT V Embedded Systems Integrated Developme...Arti Parab Academics
Design and Development: Embedded system development Environment – IDE, types of file generated on cross compilation, disassembler/ de-compiler, simulator, emulator and debugging, embedded product development life-cycle, trends in embedded industry.
RTOS-MicroC/OS-II
It is a priority-based real-time multitasking operating system kernel for microprocessors, written mainly in the C programming language.It is intended for use in embedded systems.
FreeRTOS basics (Real time Operating System)Naren Chandra
A presentation that covers all the basics needed to understand and start working with FreeRTOS . FreeRTOS is comparable with more than 20 controller families and 30 plus supporting tools and IDEs.
FreeRTOS is a market-leading real-time operating system (RTOS) for microcontrollers and small microprocessors. Distributed freely under the MIT open source license, FreeRTOS includes a kernel and a growing set of libraries suitable for use across all industry sectors. FreeRTOS is built with an emphasis on reliability and ease of use.
Tiny, power-saving kernel
Scalable size, with usable program memory footprint as low as 9KB. Some architectures include a tick-less power saving mode
Support for 40+ architectures
One code base for 40+ MCU architectures and 15+ toolchains, including the latest RISC-V and ARMv8-M (Arm Cortex-M33) microcontrollers
Modular libraries
A growing number of add-on libraries used across all industries sectors, including secure local or cloud connectivity
IoT Reference Integrations
Take advantage of tested examples that include all the libraries essential to securely connect to the cloud
Water billing management system project report.pdfKamal Acharya
Our project entitled “Water Billing Management System” aims is to generate Water bill with all the charges and penalty. Manual system that is employed is extremely laborious and quite inadequate. It only makes the process more difficult and hard.
The aim of our project is to develop a system that is meant to partially computerize the work performed in the Water Board like generating monthly Water bill, record of consuming unit of water, store record of the customer and previous unpaid record.
We used HTML/PHP as front end and MYSQL as back end for developing our project. HTML is primarily a visual design environment. We can create a android application by designing the form and that make up the user interface. Adding android application code to the form and the objects such as buttons and text boxes on them and adding any required support code in additional modular.
MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software. It is a stable ,reliable and the powerful solution with the advanced features and advantages which are as follows: Data Security.MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
The Internet of Things (IoT) is a revolutionary concept that connects everyday objects and devices to the internet, enabling them to communicate, collect, and exchange data. Imagine a world where your refrigerator notifies you when you’re running low on groceries, or streetlights adjust their brightness based on traffic patterns – that’s the power of IoT. In essence, IoT transforms ordinary objects into smart, interconnected devices, creating a network of endless possibilities.
Here is a blog on the role of electrical and electronics engineers in IOT. Let's dig in!!!!
For more such content visit: https://nttftrg.com/
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
3. Real Time System
A system is said to be Real Time if
it is required to complete it’s work
& deliver it’s services on time.
Example – Flight Control System
All tasks in that system must execute
on time.
4. Hard and Soft Real Time Systems
Hard Real Time System
Failure to meet deadlines is fatal
example : Flight Control System
Soft Real Time System
Late completion of jobs is undesirable but not
fatal.
System performance degrades as more & more
jobs miss deadlines
Online Databases, Multimedia System,Video
Streaming System
5. Some Definitions
Timing constraint: constraint imposed on timing
behavior of a job: hard or soft.
Release Time: Instant of time job becomes
available for execution. If all jobs are released when
the system begins execution, then there is said to be
no release time
Deadline: Instant of time a job's execution is
required to be completed. If deadline is infinity, then
job has no deadline. Absolute deadline is equal to
release time plus relative deadline
Response time: Length of time from release time to
instant job completes.
6. Tasks and Jobs: Definitions
A task is like a process or thread in an
OS.
Task─ term used for the process in the
RTOSes for the embedded systems.
For example, VxWorks and μCOS-II
are the RTOSes, which use the term
task.
Job (Jij): Unit of work, scheduled and
executed by system.
8. Other Features Of RTOS’s
1. Real-Time Operations i.e. Perform
immediate operations when needed
2. Low Power Consumption, i.e. no
power consumption when not doing any
work
3. RTOS usually has the basic and
common features of OS to eliminate
complexity.
4. Simple device interface.
9. Scheduling in RTOS
More information about the tasks are known
No of tasks
Resource Requirements
Release Time
Execution time
Deadlines
Being a more deterministic system better
scheduling algorithms can be devised.
10. Scheduling Algorithms in RTOS
Clock Driven Scheduling
Weighted Round Robin Scheduling
Priority Scheduling
(Greedy / List / Event Driven)
11. Scheduling Algorithms in RTOS (contd)
Clock Driven
All parameters about jobs (release time/
execution time/deadline) known in
advance.
Schedule can be computed offline or at
some regular time instances.
Minimal runtime overhead.
Not suitable for many applications.
12. Scheduling Algorithms in RTOS (contd)
Weighted Round Robin
Jobs scheduled in FIFO manner
Time quantum given to jobs is proportional to it’s
weight
Example use : High speed switching network
QOS guarantee.
Not suitable for precedence constrained jobs.
Job A can run only after Job B. No point in giving time
quantum to Job B before Job A.
13. Scheduling Algorithms in RTOS (contd)
Priority Scheduling
(Greedy/List/Event Driven)
Processor never left idle when there are
ready tasks
Processor allocated to processes according
to priorities
Priorities
static - at design time
Dynamic - at runtime
14. Priority Scheduling
Earliest Deadline First (EDF)
Process with earliest deadline given highest priority
Least Slack Time First (LSF):-Least Slack Time (LST)
scheduling is a scheduling algorithm. It assigns priority based
on the slack time of a process. Slack time is the amount of time
left after a job if the job was started now.
slack = relative deadline – execution left
Rate Monotonic Scheduling (RMS):-In computer science, rate-
monotonic scheduling (RMS) is a scheduling algorithm used
in real-time operating systems with a static-priority scheduling
class. The static priorities are assigned on the basis of the cycle
duration of the job: the shorter the cycle duration is, the higher
is the job's priority.
15. Resource Allocation in RTOS
Resource Allocation
The issues with scheduling applicable here.
Resources can be allocated based on
Weighted Round Robin
Priority Based
Some resources are non preemptible
Example : semaphores
Priority Inversion if priority scheduling is used
16. Priority inversion
priority inversion is a problematic
scenario in scheduling in which a high
priority task is indirectly preempted by a
medium priority task effectively
"inverting" the relative priorities of the
two tasks.
17. Solutions to Priority Inversion
Non Blocking Critical Section
Higher priority Thread may get blocked by
unrelated low priority thread
Priority Ceiling
Each resource has an assigned priority
Priority of thread is the highest of all priorities of
the resources it’s holding
Priority Inheritance
The thread holding a resource inherits the priority
of the thread blocked on that resource
18. Other RTOS issues
Interrupt Latency should be very small
Kernel has to respond to real time events
Interrupts should be disabled for minimum
possible time
For embedded applications Kernel Size
should be small
Should fit in ROM