TOILET SEAT DEVICE AND TOILET BOWL DEVICE

To provide a toilet seat device capable of appropriately calculating a falling speed of stool.SOLUTION: A toilet seat device according to an embodiment, that is placed on an upper part of a toilet bowl having a bowl part for receiving excrement, and detects information about fallen stool, that is falling stool, comprises: a light emitting element that emits light and a light receiving element that receives the light; detects two different points in a height direction by the light receiving element, calculates a falling speed of the fallen stool from the presence or absence of detection of the fallen stool at these two points; and estimates a length or an amount of the fallen stool based on the falling speed and a time during which the falling stool is detected.SELECTED DRAWING: Figure 11 【課題】便の落下速度を適切に算出すること。【解決手段】実施形態に係る便座装置は、排泄物を受けるボウル部が形成された大便器の上部に載置され、落下している便である落下便の情報を検知する便座装置であって、光を照射する発光素子と、光を受光する受光素子と、を有し、前記受光素子により高さ方向に異なる２点を検知し、前記２点における前記落下便の検知有無から、前記落下便の落下速度を算出し、前記落下速度と、前記落下便を検知している時間とに基づいて、前記落下便の長さまたは量を推定する。【選択図】図１１