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Friday, September 20, 2019

Digital Signal Processing - DSP

When you are trying to arrive at a complex Embedded Systems and Communications solution, You will think of a DSP. Now that computers and embedded devices are used in most electronic devices, DSP is a way you can process, transform, analyze and generate fast analog data, in Real Time.

Real Time ideally is instantaneous or in sync, in tandem. Not an Zepto Second lost. But in the real world many analog inputs or result outputs can be processed a lot slower. So it is more like, How 'real time' you want, how cost-effective a real-time solution can be provided. If the analog input is slow and the system inertia is high and the user response time is limited by his persistence of vision, you need to make a system just a bit faster, even Microseconds delay may be fine. In yet another case it may be pico seconds.

Digital Signal Processing - DSP

A web page in a browser delays a few milliseconds, you will not notice; but when you talk over the phone a small delay, echo or glitch can be unpleasant.

In a weather station the wind speed, atmospheric pressure and relative humidity are measured as analog signals using special sensors. This is then converted to digital data and fed to an embedded system or computer. The computer software analyzes the data and arrives at some predictions based on past patterns. This system in its simplest form, may not be DSP, but it is the beginning of this science, the first step.

Sunday, September 15, 2019

Process Control Education - Instrumentation

A Resource of Value for Industrial Engineering. Here is an Online Textbook for learning advanced process control concepts.

The Process Control Education Web Site

The Reference includes Sample Process Control Course, Instrumentation for Process Control, WEB-Based Educational Resources for Process Control and Process Operability.

 The Process Control Education Web Site

The material above can also be found on the -Process Control, 2nd Edition, McGraw-Hill, 2000 - ISBN 0-07-039362-1 a textbook by T. Marlin.


delabs Notes - 

Industrial Automation enables Higher skill levels for workers and reduces danger of accidents too. Now the emphasis is for Energy Efficient Industrial Production, not only to save Energy Costs but as a Social Responsibility.

Industries should not pollute water bodies and the atmosphere, this brings us to new process control area of Air and Water Quality Measurement and regulation.

Monday, September 02, 2019

IMU - Accelerometers and Gyroscopes

Accelerometers and Gyroscopes as well as combination IMU devices (Inertial Measurement Unit).

The ADXL345 from Analog Devices is a small, thin, low power, 3-axis accelerometer with high resolution 13-bit measurement at up to ±16 g.

Ben's HobbyCorner - Software - Bascom-examples On the right the ADXL345, connected to the I2c-bus, and when connected well, you will find it in the I2c-scanner. This is the Bascom-AVR code for the I2c-scanner. When the ADXL345 and the HMC5843 are fixed on the board you should see this in Hyperterminal.

 Bascom-examples ADXL345 connected to the I2c-bus

A Guide to using IMU in Embedded Applications

This guide is intended to everyone interested in inertial MEMS (Micro-Electro-Mechanical Systems) sensors, in particular Accelerometers and Gyroscopes as well as combination IMU devices (Inertial Measurement Unit).

See also on this blog - Accelerometers in Electronics