The present invention relates to a seed heart monitoring device for connection to a Säherz (3 ') and for monitoring the Säherzes (3') with - a line camera (21) with a detection direction (E), - one on Säche (3 ') attachable housing (20 ) for receiving the line camera (21) and - a radiation source (22) for generating detectable by the line camera 21 electromagnetic waves having a radiation direction (S), wherein the Seherzherzüberwachungseinrichtung (12) is formed so that of the radiation source (22) generated Electromagnetic waves after reflection at a reflection surface (13) of a rotatable Säscheibe (9) of the Säherzes (3 ') of the line scan camera (21) can be detected and evaluated by an evaluation unit. Moreover, the present invention relates to a Säherz and a seeder.
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