An object detection device is provided with a controller, a first sensor, and a second sensor. The first sensor transmits a first energy wave, and the second sensor transmits a second energy wave. The first sensor receives the reflected first energy wave, converts the same into a first self-signal, receives the reflected second energy wave, and converts the same into a first correspondence signal. The second sensor receives the reflected second energy wave, converts the same into a second self-signal, receives the reflected first energy wave, and converts the same into a second correspondence signal.