The present invention detects sexual violence situations that can occur to women in real time, and when a sexual violence situation occurs, it automatically generates an alarm around it, and at the same time transmits the location of the mobile phone to nearby acquaintances, police, etc. A sexual assault detection apparatus capable of preventing and a sexual assault prevention system using the same. According to the sexual assault detection apparatus of the present invention, a sensor group consisting of a plurality of sensors for detecting signals related to actions and emotions from a user; a processor for determining whether a sexual assault situation exists based on a detection signal from the sensor group; And an external smart phone application and a communication unit for communicating with an external surrounding notification device is provided and a sexual violence detection device worn on the user''s bra is provided, the sensor group is an IMU sensor for acceleration and angular velocity detection, the user''s skin A galvanic skin response (GSR) sensor for detecting the user''s emotional state through conductivity, a photoplethysmography (PPG) sensor for measuring the user''s heart rate, and a temperature sensor for measuring the temperature of the user''s skin, the processor including a plurality of Collects the signal detected from the sensor of the, determines whether the collected signal is sexual assault using a plurality of artificial intelligence algorithm models, and if it is determined that the result corresponds to the sexual violence situation, the external smartphone application and the surrounding environment and notify the notification device of a sexual assault risk condition.
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