The invention discloses sound equipment suitable for a high-voltage vehicle-mounted system. The sound equipment comprises a vehicle-mounted sound production device, a wake-up circuit and a power supply circuit for supplying power to the vehicle-mounted sound production device, the wake-up circuit comprises a wake-up signal input terminal, a voltage judgment module and a wake-up signal output terminal; the voltage judgment module accesses a wake-up signal from the high-voltage vehicle-mounted system through the wake-up signal input terminal; the voltage judgment module comprises a triode and a voltage stabilizing diode D3, an emitting electrode of the triode is connected with the wake-up signal input terminal, a base electrode of the triode is connected with the voltage stabilizing diode D3, and a collector electrode of the triode is connected to the wake-up signal output terminal; and the wake-up signal output terminal is connected with the power supply circuit. According to the invention, a CAN chip with an awakening function does not need to be used, and awakening of sound equipment of a 24V and other high-voltage vehicle-mounted system (such as a truck system) is realized in a low-cost manner, especially awakening of a pedestrian warning indicator is realized.
本发明公开了一种适于高电压车载系统的音响设备。该音响设备包括车载发声装置、唤醒电路和用于为车载发声装置供电的电源电路;唤醒电路包括唤醒信号输入端子、电压判断模块及唤醒信号输出端子;电压判断模块通过所述唤醒信号输入端子接入来自所述高电压车载系统的唤醒信号;所述电压判断模块包括三极管和稳压二极管D3,所述三极管的发射极和所述唤醒信号输入端子连接,所述三极管的基极和所述稳压二极管D3连接,所述三极管的集电极连接至所述唤醒信号输出端子;所述唤醒信号输出端子和所述电源电路连接。本发明不需要使用带唤醒功能的CAN芯片,以低成本方式实现24V等高电压车载系统(例如卡车系统)的音响设备唤醒,特别是实现行人警示器的唤醒。
Sound equipment suitable for high-voltage vehicle-mounted system
适于高电压车载系统的音响设备
2025-02-28
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
Vehicle-mounted sound equipment with high-fidelity sound effect
European Patent Office | 2021
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