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A Client-Server System for Test & Measurement Applications

IoT
Custom software development
Industrial solutions
Web development
FPGA

About

Testing electronic devices normally require setting up an electronics laboratory with expensive equipment and tools. But what if these tools could all be accessed by any web browser from a tablet or laptop computer?

Request

A Slovenian test and measurement equipment manufacturing company developed an ecosystem of open-source out-of-the-box applications that allow electronics enthusiasts to test their electronic projects. While the entire ecosystem was open source, some of the test and measurement applications were supposed to be paid. The company was looking for a software development agency that could implement a software licensing mechanism to ensure that paid applications could not be distributed without a license.

Solution

We came up with a software licensing mechanism that generates a special license key on the server using an encryption algorithm. When a user buys an app or makes in-app purchases this mechanism initiates a license check, making it harder for hackers to remove security controls built into the software application.

After we successfully completed this project, our client decided to continue working with us. Together we improved their existing oscilloscope app and created a number of new apps including a spectrum analyzer with in-app purchases, a bode analyzer (an app for building amplitude-frequency characteristics), and a logic analyzer.

We automated the build delivery process, built frontend and backend, and provided proper documentation for our client.

Technologies Used

Low-level part of this project was implemented using C/C++.
For GUI we used HTML, CSS, and JS (Javascript).
The device has 2 options for networking: Ethernet and Wi-Fi.
Some utilities were implemented using Python.
Websockets is used to stream data from the device to the GUI part.
All software except GUI works on the Xilinx SoC platform.
We participated in a custom Linux image building for the device.

Results

We helped the test and measurement company integrate a software licensing mechanism that allows users to buy applications and make in-app purchases. We also developed a client-server system with a backend based on customized Nginx. The system provides web access for starting and manipulating numerous applications for a measurement device from the browser. It allows users to measure signals with ACQ speed up to 125 MS/s, extract some information such as spectrum and decompose signals into logical data.

"Integra Sources' engineering team exceeded expectations. Daily reports on development projects made it easy for the client to stay on top of every task. The team at Integra Sources is easy to talk to, regardless of the topic of discussion."

CTO of Test & Measurement Equipment Company

Make some noise

Fast analog inputs

2

Fast analog outputs

2

Digital inputs for a logic analyzer

8

Max acq speed

125 MS/s

Developed applications

10+

Scope of work

Software licensing mechanism

Oscilloscope application

Spectrum analyzer application

Logic analyzer with support for UART, SPI, and I2C

Bode analyzer application

Vector network analyzer application

Digital multimeter application

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