The first misunderstanding is that the microseismic life detector can only be used to detect human beings. The microseismic life detector is a kind of equipment that uses the microseismic sensing signal to detect the people hiding in the carriage. The vibration comes from the heartbeat of the human body. Before detecting the vehicle, the microseismic detection sensor will be connected to the beam at the bottom of the vehicle. The vibration generated by the heartbeat is captured by the microseismic sensor, and the signal is transmitted to the microseismic life detector data processing center through the sensor, After the analysis of the system software, judge whether someone is hidden in the car. From this description, it seems that this is not a misunderstanding, but human beings are not the only mammals with heartbeat. Besides human beings, other mammals also have heartbeat. Therefore, the detection range of microseismic life detector is not limited to human beings, and other small and large mammals can be detected. Of course, If they still have a heartbeat.