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针对目前煤矿应急救援过程中语音传输易受现场噪声环境干扰,语音质量差,救援队员佩戴氧气全面罩后,不便佩戴普通耳机和麦克风的情况,着重研究借助骨骼、神经、肌肉传播声波产生听觉的骨传导听说技术在煤矿应急救援语音采集传输的应用,并首次利用该技术研制出煤矿应急救援音频采集传输的骨传导语音听说器,解决灾变现场语音信号的高质量采集与传输的问题,从已装备此骨传导语音听说器的煤矿应急救援队应用实践表明,该设备在危险环境下,能实现救援队员佩戴全面罩后骨传导语音听说器通话清晰、抗噪声能力强的功能,地面指挥中心能实时掌握灾变后井下被困人员及救援队员的生命状况和事故现场状态,提高指挥救援的安全性和可靠性。
In view of the fact that the voice transmission in coal mine during the emergency rescue process is easily disturbed by the noisy environment on site and the voice quality is poor, the rescuers are not comfortable wearing ordinary earphones and microphones after wearing a full-face mask of oxygen. The study focuses on the auditory effects of sound waves propagating through bones, nerves and muscles Bone conduction hearing technology in coal mine emergency rescue voice acquisition and transmission applications, and for the first time using the technology to develop a mine emergency rescue audio acquisition and transmission of bone conduction speech audiophone, to solve the disaster site voice signal acquisition and transmission of high quality, From the coal mine emergency rescue team that has been equipped with this bone-conduction speech audiometer, the application practice shows that the device can realize the function of clear and anti-noise ability of the rescue team wearing a full face mask and bone-conduction voice hearing speaker in a dangerous environment, The ground command center can grasp the life conditions and accident scene conditions of trapped persons and rescuers underground after the disaster so as to improve the safety and reliability of command and rescue.