Communication system based on parallel bus

A parallel bus-based communication system, comprising:

• a plurality of electronic devices, wherein the electronic devices comprise ultrasonic sensors, wherein each of the electronic devices has a communication pin, a power pin, and a ground pin;
• a host controller configured with a selecting chip and a communication chip, wherein:
• the communication chip is configured to control at least one channelized parallel bus, each of the electronic devices having its communication pin individually connected to the channelized parallel bus, and each of the electronic devices being connected to the host controller via one channelized parallel bus;
• the host controller is configured to, upon first power on, allocate addresses to the electronic devices sequentially via the selecting chip;
• wherein for each electronic device, when the selecting chip controls the power pin of the electronic device to be powered on and controls the power pins of remaining electronic devices to be powered off, the host controller allocates an address to the electronic device whose power pin is powered on,
• wherein the selecting chip controls one power line to which power pins of all electronic devices are connected without controlling any switch.