Leak detection system, vibration detection device, an information processing apparatus, and a leak detection method

Vibration detection device (10) includes a vibration detection unit (110), the sensor-side leakage determination section (120), and a first transmission unit (130), and a second transmission unit (140). Vibration detection unit (110) detects a vibration which has transmitted the pipe (30). Sensor side leakage determination section (120) determines whether the leakage in the pipe based on the measurement result of the vibration detection unit (110) (30) may be occurring. The first transmission unit (130), when the sensor side leakage determination section (120) determines that there is a possibility of leakage, and transmits a temporary leak information to the information processing apparatus (20). Temporary leak information indicates that there is a possibility of leakage in the pipe (30). The second transmitting unit (140), when receiving the waveform request information indicating a request for waveform data of the vibration from the information processing apparatus (20), the vibration detection unit (110) an information processing apparatus waveform data measured to send to (20).