System with external equipment accessing and battery charging management functions, and method thereof

Abstract

The invention relates to a system with external equipment accessing and battery charging management functions. The system comprises an USB (universal serial bus) circuit switching module, a charging management module, a logic control module, an auxiliary equipment power source supply module, an USB auxiliary equipment interface, an USB main equipment interface, a battery charging interface and an USB compatible interface. The invention also relates to a method with the external equipment accessing and battery charging management functions. The method comprises the following steps of enabling the logic control module to judge whether the USB compatible interface is connected with external equipment in an auxiliary mode way or not; if the USB compatible interface is connected with the external equipment in the auxiliary mode, controlling the USB circuit switching module to switch a circuit to the USB compatible interface; if the USB compatible interface is not connected with the external equipment, controlling the USB circuit switching module to switch the circuit to the USB auxiliary equipment interface. The system and method with the external equipment accessing and battery charging management functions have the advantages that while the USB main equipment is charged, the data transmission and collection are performed on the external equipment; under the condition of shutdown of the USB main equipment, the consumption of the battery electricity of the USB main equipment is avoided; the structure is simple, the implementation is easy, and the application range is wider.

Description

technical field [0001] The present invention relates to the field of bus control of electronic measurement equipment, in particular to the field of bus control of electronic measurement equipment based on USB OTG mode, and specifically refers to a system and method with functions of accessing external equipment and battery charging management. Background technique [0002] With the popularization of Android system mobile phones, tablet computers, etc., Android system has become the mobile operating system with the largest number of users. At present, most of the portable and handheld electronic measuring devices still use Windows, WIN CE, LINUX and other operating systems. The electronic measuring devices using the Android system have very few USB control interfaces. Android system devices generally only provide one USB interface. And the USB interface generally works in slave mode and cannot access external USB devices. Only when the USB OTG (USB On-The-Go) mode is support...

AI Technical Summary

Problems solved by technology

When the USB interface works in OTG mode, the electronic measurement device operates as the host device, such as figure 1 As shown, since the USB OTG mode cannot manage the charging of the internal lithium battery while accessing the USB device, the master device cannot be charged when the slave device is connected externally, thus limiting the continuous working time of the electronic measuring device

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