PLC in Aerospace
Power line saves weight in Aerospace
Harness weight and space is key concern in aircraft and spacecraft. Yamar’s power line communication can reduce part of these wires. Some examples are described hereby.
Yamar is a partner in the EU MPBUS project for weight saving in space vehicles.
DC-BUS in Airplanes
Passenger’s comfort is an important feature in commercial airplanes. The passenger seat combines multiple electronic functions related to safety and comfort. All these functions dictate multiple wires that increase seat weight and cost. Using power line as a sub-network for communication between each of the seats and the cabin network reduce the seat complexity and allows sensing individual passenger status such as occupancy, safety belt, attendant call and even entertainment control. Figure 1 shows a seat with sensing and actuation capability using only one power line.
Many sensors and actuators are installed throughout airborne platforms, including UAVs . The DC-Sense-Bus allows flexible gathering of information from multiple sensors and actuators distributed across an aerospace platform to a Master module using single powerline wire. The SIG61 is an example of a slave device capable to sample the status of up to 8 inputs and transfer the data to the Master over the powerline. The small device can be installed inside an aerospace connector, saving the need for heavy and expensive harness. Multiple networks can use the same powerline by selecting different carrier frequencies. In the image to the right, there is a smoke detector application that Yamar has developed for the SCARLETT EU project. The new network, replaced two CAN buses, saving cables while keeping the required redundancy.