Automatic positioning system based on guardrail robot

The invention discloses an automatic positioning system based on a guardrail robot, and relates to the technical field of sensing, positioning and analyzing of bridges and piers. In the invention, aninfrared detection mounting mechanism is fixedly mounted on a guardrail positioning robot; a pier infrared sensor is arranged on the infrared detection mounting mechanism; the guardrail positioning robot is provided with a pair of upper installation substrates located on the two sides of the infrared detection installation mechanism, and upper infrared sensors are installed on the upper installation substrates. A lower mounting substrate located below the upper mounting substrate is mounted on the guardrail positioning robot, and a lower infrared sensor is mounted on the lower mounting substrate; an upper side power device is fixedly mounted at the upper part of the guardrail positioning robot; and a lower side power device is fixedly mounted at the lower part of the guardrail positioningrobot. Through distance de