Auxiliary Electronic Circuits for Testing Electrical Wiring

CreaSoft company creates software and hardware for automotive wiring testing. In the following illustration we can see a photograph of part of the wiring of a vehicle. As you can see the wiring is made up of a large number of cables with connectors at the ends. Wiring manufacturing companies such as Valeo or Lear design and assemble complex electrical wiring using connectors, terminals, electrical wire and other raw materials. The final phase of cable manufacturing consists of checking it. It is at this time that CreaSoft products intervene. In the following illustrations we can see two test boards, note how the wiring connectors are connected to the test bench counter connectors. These elements are called counterpieces.

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Distributed Multifunction System RS485 or USB 1.1 for Testing Electrical Wiring

The purpose of the project is to check the wiring harness, this time the mechanical enclosure is not a rack, but cards located on plastic guides, thus providing greater versatility. In the following photograph we can see an example of different cards located in the guides and interconnected with each other. These systems consist of electronic cards controlled by the PC. Communication with this is done through the USB bus if there are high transmission speed requirements, or through the RS485 bus if long distances are desired in industrial environments. The general diagrams of these systems are presented below. The following illustration shows how the PC communicates with a USB hub (HUB), and this in turn does so with each CPU card. In total, a star topology network of up to 127 nodes can be implemented (typical of a USB network). Each CPU card can control up to 8 peripherals.

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