Sensor, tire and vehicle

The embodiment of the utility model provides a sensor, a tire and a vehicle, the sensor comprises a main body, a sensing assembly and a separation blade, the main body is internally provided with an accommodating space, the main body is provided with a gas path, one end of the gas path is communicated to the outside, and the other end of the gas path is communicated to the accommodating space; the sensing assembly and the blocking piece are located in the containing space. When tire burst happens, the sensing assembly can make contact with the blocking piece and output a tire burst signal, so that tire burst detection and early warning can be achieved, and meanwhile the sensor is simple and reliable in structure and low in production cost.