Indoor wireless remote control method applied to signal source

The invention provides an indoor wireless remote control method applied to a signal source, adopting an own USB interface of an industrial personal computer for control of a Bluetooth module, performing wireless communication with an upper computer, and comprising a Bluetooth module, a power switching circuit, a Bluetooth reset circuit, a working state control circuit, a USB control circuit and a SPI control circuit. The power switching circuit is used for providing needed power for the Bluetooth module, the Bluetooth reset circuit is used for automatically resetting a Bluetooth device when power supply of instruments is interrupted, a SPI interface is used for upgrading and downloading a Bluetooth control program, and the USB control circuit and the working state control circuit complete control of the signal source to the Bluetooth module. Firstly, the Bluetooth module performs initializing setting, then, inquires other surrounding Bluetooth devices, performs communication after connecting successfully, and disconnects after finishing communication. The method based on the invention is convenient for organizing an indoor distributed automatic test system, and may be a beneficial supplement for a wireless network.