ALARM SYSTEM

• Main Authors: ENDO EIJI, MATSUO KAZUKI
• Format: Patent
• Language: English; Japanese
• Published: 17.10.2019
• Subjects: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

To provide an alarm system that reliably transmits a warning sound even to pedestrians at the back, particularly, when the many pedestrian exist, by changing the warning sound depending on the number of the pedestrians ahead of a vehicle.SOLUTION: An alarm system includes: a pedestrian detection part 11 that detects a pedestrian ahead of a vehicle; a loudspeaker 13 that emits a warning sound to the pedestrian detected by the pedestrian detection part 11; a warning sound control part 24 that controls the loudspeaker 13; and a density distribution calculation part 22 that calculates pedestrian density on the basis of the result of detection by the pedestrian detection part 11. The warning sound control part 24 changes a sound emission state of the loudspeaker 13 on the basis of the result of calculation by the density distribution calculation part 22.SELECTED DRAWING: Figure 1 【課題】車両前方の歩行者の量に応じて警報音を変更し、特に、歩行者が多数存在する場合に、奥の歩行者にも確実に警報音が届く警報装置を提供する。【解決手段】車両前方の歩行者を検出する歩行者検知部１１と、歩行者検知部１１が検出した歩行者に警報音を発報するスピーカ１３と、スピーカ１３を制御する警報音制御部２４と、歩行者検知部１１の検出結果に基づき歩行者の密度を算出する密度分布演算部２２と、を備え、警報音制御部２４は、密度分布演算部２２の算出結果に基づき、スピーカ１３の発報状態を変更する。【選択図】図１