State detecting system of automobile exhaust emission

The utility model relates to a state detecting system field especially relates to an automobile exhaust emission state detecting system, and it includes the sleeve pipe, is equipped with the tail gas pressure sensor who supplies tail gas to pass through in the sleeve pipe on the pipe wall, and tail gas pressure sensor's signal output part connects AD converting circuit's signal input part, and AD converting circuit's signal output part connects automobile exhaust 0's signal input part, radio receiving circuit's signal output part connects DA converting circuit's signal input part, the simulation signal input part of DA converting circuit's simulation signal output part connection control circuit, and control circuit is to the analog signal analysis of input, the volume of reaching the exhaust emissions. When tail gas passed through tail gas pressure sensor, tail gas pressure sensor can accurately react the pressure that the tail gas flow produced, and then emission that can real -time detection automobile exh