Abstract-This paper presents a smart vision sensor for environmental hazards (such as slippery surfaces) and detecting risk factors of a toddler's fall in an indoor home perilous activities (such as inattentive walking) [11]. As environment assisting parents' supervision to prevent fall intrinsic factors are associated with health problems, a normal injuries. We identified the risk factors by analyzing real fall toddler's fall would be based on the extrinsic factors which injury stories and referring to a related organization's include their environments and activities. Therefore, this suggestions to prevent falls. In order to detect the risk factors injuries when they fall. As young children are not able to assess risks for 3) ensure that there is no furniture around available for them themselves, the best way to prevent their falls would be to climb on. continuous supervision and instruction from their parents.Based on the above studies, the risk factors to recognize by However, this is not always practical. A smart vision sensor is our sensor were identified as follows: proposed in this paper to assist the parents' supervision for 1) check if clutter has appeared on the floor. preventing fall injuries. 2) check if a toddler moves around when clutter is presentMany applications have been developed to detect on the floor. potentially fatal falls of the elderly [3][4][5][6][7][8][9][10]. Acceleration 3) check if a toddler moves too close to any structure in sensors worn by users and cameras were used in these cases their environment.for detecting falls. Although some of them collected the fall 4) check if a toddler climbs any furniture. data from the sensors to evaluate the user's personal fall risksThe first factor was defined for places such as a corridor for later prevention, there was no prevention against falls where clutter should not be on the floor and could even trip during the data collection and also against irregular falls adults. The second factor was defined for the case that a afterwards. Some wearable devices provided prompt toddler is playing with toys on the floor of a play room. If a protection such as an airbag and an overhead tether when toddler sits still while playing with the toys, the toys do not sensing a fall, but required the user to wear these all the time.