Waste gas detection method and system for portable explosion-proof diesel engine trackless vehicle

The invention belongs to the technical field of measurement and testing, and discloses a waste gas detection method and system for a portable explosion-proof diesel engine trackless vehicle. The system comprises a tension sensing module, a sampling device and an upper computer; the sampling device comprises a sampling probe, a sampling pipeline, a pipeline switch and a gas analyzer, and the sampling probe is arranged on an exhaust pipe of the tested vehicle, and connected with the gas analyzer through the sampling pipeline; the tension sensing module comprises a tension sensor and a first wireless module, the tension sensor is arranged between the tested vehicle and a load device, a signal output end of the tension sensor is connected with the first wireless module, and the first wirelessmodule is used for wirelessly sending a tension value measured by the tension sensor to the upper computer; and a second wireless module is arranged in the gas analyzer and is used for wirelessly sending an analysis result of