Bus address allocation and identification method for realizing communication via step by step power supply

Abstract

The invention discloses a bus address allocation and identification method for realizing communication via step by step power supply. The method comprises a host, a host processor and a sensor, the host comprises a sensor power supply, the host processor and a communication interface therein, a sensor processor is arranged in the sensor, a bus is connected to the bus, the bus is composed of a power line, a ground line and a two-core serial bus, the two-core serial bus connects the host processor with the sensor process, the host processor connects the sensor processor with the sensor processor, one end of the power line is connected with the sensor power supply and the host processor, the other end of the power line is connected with the sensor processor, the power line connects the sensorprocessor with the sensor processor, the ground line connects the host with the sensor processor, and the ground line connects the sensor processor with the sensor process. The address setting problem on the two-core serial bus is solved, the automatic address allocation and identification technology is adopted, and no jumper or dial switch is needed.

Description

technical field [0001] The invention relates to the field of vehicle electrical appliances, in particular to a method for assigning and identifying bus addresses for communication through step-by-step power supply. Background technique [0002] With the development of society, new energy vehicles such as natural gas fueled vehicles and hydrogen fueled vehicles have been developed one after another. However, new energy vehicles such as natural gas fueled vehicles and hydrogen fueled vehicles need to pay more attention to fuel leakage during use, so general fuel vehicles will install Multiple sensor leakage alarms, multiple sensor leakage alarms will be connected through two-core serial bus communication. In the existing two-core serial bus system, each sensor needs to use jumpers, dial switches, etc. to set different Addresses, even for exactly the same sensors, need to set different addresses, which has the following disadvantages: [0003] The same sensor, due to setting d...

AI Technical Summary

Problems solved by technology

[0004] When repairing or replacing a sensor on site, the address of the sensor to be replaced must be verified and set to a completely consistent address on site, otherwise it will cause address conflicts, system disorder, and the system cannot work normally. The requirements are very high and the operation workload is heavy;

[0005] Since jumpers and DIP switches cannot be dustproof and waterproof, the entire sensor cannot meet the high-level dustproof and waterproof requirements in places where the protection level is high;

Images