The battery-powered motion sensor system, with a DC output capacity of 80W, is an intelligent device that combines environmental perception with electrical energy output. This system takes high-performance batteries (such as lithium iron phosphate batteries) as the power source. With their high energy density, long cycle life and excellent safety performance, it provides reliable power guarantee for the stable operation of the system.

The motion sensor, as the core component, adopts passive infrared (PIR), microwave sensing or dual-mode fusion technology, which can keenly capture the movement of the human body or objects. When the sensor detects an effective motion signal, it will quickly trigger the built-in control circuit, activate the power output module, and stably output 80W DC electrical energy, which can drive various compatible devices, such as lighting fixtures, small fans, portable display screens, etc.

In practical applications, this system demonstrates strong flexibility and energy-saving advantages. For example, in the intelligent lighting scenario, when personnel enter the sensing area, the sensor immediately activates 80W DC power supply and lights up the high-brightness LED lamps to provide sufficient lighting. After the personnel leave, the system automatically cuts off the power, effectively avoiding energy waste. Its control circuit integrates intelligent power regulation and overcurrent, overvoltage and short-circuit protection functions to ensure stable operation in complex environments. In addition, the modular design facilitates integration with battery packs, sensors and load devices of different specifications, and is widely applicable in smart home, industrial monitoring, outdoor emergency response and other fields, achieving on-demand energy supply and improving energy utilization efficiency.

System Composition

• LiFePO₄ Battery: It is the power source of the system. LiFePO₄ batteries have advantages such as high energy density, long cycle life, good safety performance, and low self - discharge rate. For an 80W output system, a battery pack with appropriate capacity and voltage needs to be selected according to the specific working time and load requirements. Usually, a battery pack with a voltage of 24V or 48V and a capacity of several Ah to tens of Ah may be required.
• Motion Sensor: The motion sensor is used to detect the movement of objects in the surrounding environment. It can be a passive infrared sensor (PIR), a microwave sensor, or a combination of both. When the sensor detects motion, it sends a signal to the control circuit to trigger the output of the 80W DC power.
• Control Circuit: The control circuit is responsible for regulating and controlling the entire system. It includes functions such as battery charging and discharging management, motion sensor signal processing, and output power regulation. The control circuit ensures the stable operation of the system and the efficient use of battery power.
• DC - DC Converter: If the output voltage of the LiFePO₄ battery is not the same as the required input voltage of the 80W load, a DC - DC converter is needed to convert the battery voltage to the appropriate voltage for the load. The DC - DC converter has high conversion efficiency to minimize energy loss.