Multifunctional tunnel detection vehicle based on passenger car chassis

The invention discloses a multifunctional tunnel detection vehicle based on a passenger car chassis. The multifunctional tunnel detection vehicle is characterized in that a synchronous control circuit device and an industrial control cabinet are mounted in a front vehicle body operation room; the rotatable arc-shaped sensor support is installed on a rear chassis, and the synchronous control circuit device provides synchronous signals for the tunnel section image acquisition system and the lining three-dimensional contour measurement system. The tunnel section image acquisition system is used for acquiring tunnel section images; the lining three-dimensional contour measurement system is used for constructing a tunnel lining three-dimensional contour; the road environment camera is mounted at the top of the front vehicle body operation room; and the generator is mounted on the rear chassis and supplies power to the industrial control cabinet, the tunnel section image acquisition system and the tunnel section im