The utility model relates to a sensor support and use this support target in place detection device with pile up assembly, a sensor support, with the support body of bed hedgehopping fiber optic probe, the support body is equipped with the confession respectively that the interval set up around at least two on being used for being fixed in corresponding frame the mounting structure of fiber optic probe installation is equipped with the groove of dodging that is used for dodging corresponding support cigarette board between two adjacent mounting structure on the support body. Use, set up interval around a plurality of fiber optic probes on the support body, support body fixed mounting is in the frame, it is high that headrest is visited with a plurality of optic fibre to the support body, this has just reduced the distance between fiber optic probe and the corresponding strip cigarette, be favorable to improving fiber optic sensor's detectivity, behind the high bed hedgehopping of support body, when asking the cigarette board to revolute the moving axis line and rotate from left to right, it can get out of the way the movement track who holds in the palm the cigarette board to dodge the groove, with the action of guaranteeing sensor support noninterference support cigarette board, the normal operating of assembly is piled up in the assurance.