The invention belongs to the technical field of passenger cars and railway vehicles, and provides an active noise reduction back cushion capable of being freely bent, a passenger car seat with the active noise reduction back cushion capable of being freely bent and a railway vehicle cab for active noise reduction by adopting the mode. The passenger car seat and the railway vehicle cab comprise a seat, a freely bendable back cushion and an active noise reduction system. According to the back cushion capable of being freely bent, aluminum alloy is adopted to serve as a headrest supporting frame, so that the back cushion has certain supporting strength and free bending performance at the same time, memory foam is used for filling and wrapping, and the riding comfort of a driver and passengers is guaranteed. The active noise reduction system comprises a reference sensor, a comparison sensor, a sound wave generator and a signal controller, and the signal controller receives an environment noise signal and a feedback correction signal transmitted by the sensors and controls the sound wave generator to emit noise sound waves with the same frequency and amplitude but opposite phases. Therefore, the noise transmitted into the ears of the passenger is inhibited.
本发明属于客车及轨道车辆技术领域,提供了一种可自由弯曲式主动降噪靠枕、一种带有可自由弯曲式主动降噪靠枕的客车座椅以及一种采用这样方式进行主动降噪的轨道车辆驾驶舱。所述客车座椅和轨道车辆驾驶舱包括座椅、可自由弯曲靠枕和主动降噪系统;所述可自由弯曲靠枕采用铝合金作为头枕支撑架,使靠枕在具有一定支撑强度的同时具有自由弯曲性,并使用记忆棉进行填充和包裹,保证驾驶员及乘客的乘坐舒适性。所述主动降噪系统包括参考传感器、比较传感器、声波发生器和信号控制器,信号控制器接收传感器传入的环境噪声信号和反馈修正信号,并控制声波发生器发出频率与幅值相同,但是相位相反的噪声声波,从而抑制传入乘坐人员耳中的噪声。
Active noise reduction back cushion capable of being freely bent
一种可自由弯曲式主动降噪靠枕
2021-05-18
Patent
Elektronische Ressource
Chinesisch
IPC: | B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES |
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