Modern measuring systems are used for testing electronic devices, conducting scientific research, automating tests and monitoring various processes. One of the most common technologies in this field is PXI (PCI eXtensions for Instrumentation). Despite the complicated name, the principle of its operation is quite simple: it is a special platform in which various measuring modules can be installed, combining them into a single system. Such a modular measuring system can be adapted to a specific task by replacing or adding the necessary devices without completely replacing the equipment.
What is the PXI bus and modular measurement systems?
The PXI bus is a standard designed to create modular measuring and testing systems. The basis of the system is a special chassis, inside which individual modules are placed. Each module performs its own function: it measures electrical signals, generates them, controls external devices, or collects data.
The main difference between this architecture is that all the elements work together and exchange information through a common high-speed bus. Thanks to this, it is possible to assemble a system of almost any complexity using only the necessary components.
How the PXI complex works
A typical system consists of several main parts:
- the chassis in which all modules are installed;
- the controller or computer that controls the system;
- measuring and control modules;
- built-in high-speed data exchange bus;
- software for setting up and processing the results.
If necessary, the user can replace one module with another or add new functions without changing the entire system. It is thanks to this design that the platform scales easily as new tasks become available.
Where are the PXI systems used?
Modular measuring systems are used in a wide variety of fields. They are in demand where it is necessary to perform a large number of measurements with high accuracy and automate the testing process.
The most common applications:
- testing of electronic equipment;
- aviation and space industry;
- automotive industry;
- telecommunications;
- scientific research;
- product quality control at the factory.
What are the modules?
One of the advantages of the platform is the ability to use different types of modules. For example, the system may include a dynamic measurement module designed for recording