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发明公开
CN104377810A 一种数据采集终端用交直流双电源供电模块 无效 - 撤回

一种数据采集终端用交直流双电源供电模块
摘要：
本发明公开了一种数据采集终端用交直流双电源供电模块，它包括主用供电电源、备用供电电源、双电源切换装置和开关电源，所述主用供电电源和备用供电电源分别通过双电源切换装置的常开开关和常闭开关与开关电源连接；所述开关电源为交直流输入且具有5V、12V和24V三路输出的开关电源；所述主用供电电源为交流220V电源，所述备用供电电源为直流220V电源或交流220V电源；所述双电源切换装置采用交流继电器。本发明通过双电源切换装置实现了双电源输入，当一路电源出现故障时，自动切换到另一路电源，不仅提高了该数据采集终端的运行可靠性，而且具有功耗低和成本低的特点。
摘要（英）：

The invention discloses an AC-DC dual-power supply module for a data acquisition terminal. The AC-DC dual-power supply module comprises a main power supply, a standby power supply, a dual-power switching device and a switching power supply. The main power supply and the standby power supply are connected with the switching power supply through a normally open switch and a normally closed switch of the dual-power switching device respectively. The switching power supply is a switching power supply with AC-DC input and 5 V output, 12 V output and 24 V output. The main power supply is an AC 220 V power supply. The standby power supply is a DC 220V power supply or an AC 220 V power supply. An AC relay is adopted for the dual-power switching device. According to the AC-DC dual-power supply module, dual-power input is achieved through the dual-power switching device, when one power supply fails, the failed power supply is automatically switched to the other power supply, in this way, the operation reliability of the data acquisition terminal is improved, and meanwhile the AC-DC dual-power supply module has the advantages of being low in power consumption and low in cost.

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