How to effectively reduce the cost of car wiring harness?
We are developing this thing now. Half a year. Check the line sequence normally need to design a circuit to simulate the common ground, and with a series of pulse timing to a one line detection. To measure whether the harness is disconnected, use the method of measuring the parasitic capacitance of the harness. Roughly so!
Fully able to achieve, with the simplest single-chip can be completed, as long as the microcontroller IO common enough, you can achieve a variety of wiring harness line detection.
I do not understand: why do you want to do so to detect the beam machine, so complicated, not to detect a short circuit, open circuit, line order? A simple 8-bit microcontroller with interface expansion IC on the line Well, too simple. I do to do a simple multi-beam detector, even the microcontroller is useless, only two LED, one indicates the open circuit, one indicates short circuit, line order error also indicates the circuit can also be used.
