Rail transit tunnel interval measuring device

The invention discloses a rail transit tunnel interval measuring device, and belongs to the technical field of rail transit, the rail transit tunnel interval measuring device comprises a placing box, the upper surface of the placing box is fixedly provided with a fixing column, one end of the fixing column is fixedly provided with a fixing plate, the inner wall of the placing box is fixedly provided with a partition plate, and the inner wall of the partition plate is provided with a conduction assembly; according to the interval measuring device, the conduction assembly is arranged, heat generated by the measuring mechanism is used for achieving the defogging function on the shooting mechanism, it is ensured that the periphery is in a constant-temperature state, on one hand, the definition of the shooting mechanism is improved, on the other hand, generated heat energy is fully utilized, and the energy loss and the use cost of the interval measuring device are further reduced; during defogging, hot air is used