The meaning of harness is the totality of service equipment that provides service to a certain group of load sources, such as trunks, switches, control systems, and so on. The basic research content of voice service theory is to study the relationship between call volume, call loss and harness capacity, so... Harness is an important basic concept in the theory of voice service.
Load source is the service object of the harness, usually refers to the user equipment; broadly speaking, the upper level of equipment is the next level of equipment load source. In telephone communications, the load source is also known as the source of words, the number of service devices contained in the wire harness, known as the capacity of the wire harness, Figure 1 is a schematic diagram of the wire harness. The capacity of the harness is V and it serves N load sources. Any load source that issues a call can occupy one idle service device in the wire bundle.
Function
In modern automobiles, electronic control systems are closely related to the wiring harness. Someone once made a figurative analogy: the microcomputer is equivalent to the human brain, the sensor is equivalent to the sensory organs, the executive element is equivalent to the motor pipe, then the wiring harness is the nerves and blood vessels.
Automotive wiring harness from the function to points, there are carrying drive the executive element (actuator) power line and the transmission of sensor input instructions signal line two kinds. The power line is a thick wire that carries a large current, while the signal line is a thin wire (optical fiber communication) that does not carry power.