Consumer wiring harness SGT-008-054 10PINSerial port cable TPEPLUS-4097 00
In modern cars, there are many wire harnesses, and the electronic control system has a close relationship with the wire harness. Someone once made a figurative analogy: if the functions of the microcomputer, the sensor and the actuator are compared with the human body, it can be said that the microcomputer is equivalent to the human brain, the sensor is equivalent to the sensory organ, and the actuator is equivalent to the motor organ, then the harness is the nerve and blood vessel.
The automobile harness is the main body of the automobile circuit network. It connects the electrical and electronic components of the automobile and makes them function. Without the harness, there is no automobile circuit. At present, no matter whether it is a high-class luxury car or an economical ordinary car, the wiring harness is basically composed of wires, connectors and wrapping tapes. It not only ensures the transmission of electrical signals, but also ensures the reliability of the connecting circuit, supplies the specified current value to the electronic and electrical components, prevents electromagnetic interference to the surrounding circuits, and eliminates the short circuit of electrical appliances.
In terms of function, the automobile harness has two types: the power line that carries the power of the driving actuator (actuator) and the signal line that transmits the input command of the sensor. The power line is a thick wire that carries a large current, and the signal line is a thin wire that does not carry power (optical fiber communication); For example, the cross-sectional area of the wire for the signal circuit is 0.3 and 0.5 mm2.
The cross-sectional area of the wire for the motor and the actuator is 0.85 and 1.25mm2, while the cross-sectional area of the wire for the power circuit is 2, 3 and 5mm2; The special circuits (starter, alternator, engine grounding wire, etc.) have different specifications of 8, 10, 15 and 20mm2. The larger the cross-sectional area of the conductor, the larger the current capacity. In addition to considering the electrical performance, the selection of wires is also restricted by the physical performance when on-board, so the selection range is wide. For example, the wire between the frequently opened / closed door of a taxi and the vehicle body should be composed of wires with good bending performance. The wires used at high temperature positions are generally covered with vinyl chloride and polyethylene with good insulation and heat resistance. In recent years, electromagnetic shielding wires used in weak signal circuits are also increasing.
With the increase of automobile functions and the universal application of electronic control technology, there are more and more electrical components and wires. The number of circuits and power consumption on the automobile increase significantly, and the wire harness becomes thicker and heavier. This is a big problem that needs to be solved. How to make a large number of wire harnesses more effectively and reasonably arranged in the limited automobile space, so that the automobile wire harness can play a greater role, has become a problem faced by the automobile manufacturing industry.