The method of extending battery life

UAV (short for Unmanned Aerial Vehicle) , is a kind of unmanned aircraft that use radio remote control equipment and its own control system to control. From a technical point of view it can be classified into unmanned helicopters, unmanned fixed-wing aircraft , unmanned multi-rotor aircraft , unmanned airship , wing unmanned aircraft etc. From application side , it can be classified into military use and civil use. In military terms , UAV can be divided into reconnaissance aircraft and target aircraft. In civil terms , it mainly used in aerial , agriculture plant protection and mapping. UAV + industry application , is the real need in UAV and it will expand its own use.

The UAV power management

Power management means how to distribution the power to different parts effective. Power management is especially important for some mobile devices which rely on battery power. Through Reduce energy consumption when idle assembly , a superior power management system can extend the life of battery two or three times longer. Power management is also called power control.

Nowadays the mainly devices of power management in the market included PMIC and PMU. Power Management Integrated Circuits , is the circuit that take on energy transformation, distribution , testing and other power management functions in electronic equipment systems. It's main duty is to identify the power amplitude of CPU , then produce short wave moment and promote the power output stage circuit. Power Management Integrated Circuits can be in-line package and adhesive surface package. The range of application of Power Management Integrated Circuits is pretty wild , develop Power Management Integrated Circuits has important meaning for increase the performance of UAV , it also directly related to the choices of Power Management Integrated Circuits and the need of system.

The category of power management is pretty wide , it conclude separate power conversion ( mainly DC to DC ) , separate power distribution and testing , it also include the system that combine by power change and power management. Accordingly, the power management circuits classification also includes these aspects , such as Linear power chip , voltage reference chip, the switching power supply chip , LCD driver chips , LED driver chip , a voltage detector chip , 22.2v lipo battery charge management chip , etc.If the design of the circuit requires a high power supply noise and ripple rejection , Requirements occupied PCB area small ( such as mobile phones and other handhold electronic products ) , the power supply circuit does not allow the use of inductors ( such as mobile phones ) , Power is required to have an instantaneous calibration and self-test status output function requires the regulator pressure drop and its low power consumption , low cost and program simple lines , then the linear power supply is the best choice.

This kind of power include following aspects :precision voltage reference , a high-performance , low-noise op amps , low dropout regulator , low quiescent current. Power management Unit , is a kind of highly integrated , portable applications for power management scheme , it means that put the traditional separation of certain types of power management chips and other devices integrated within a single package of , which can achieve higher power conversion efficiency and lower power consumption , and a smaller number of components to accommodate the reduced board space.

PMU role in UAV Power Management

PMU is widely used in UAV products , its main role are the following
1.It provide a stable and reliable power supply to the various components of the UAV.
2.PMU Helps reduce overall system power consumption , and by reducing the power of the component when idle , so that UAVs can have a longer battery life. For example Gens ace 2s lipo battery.
3.PMU has good signal to noise rejection and transient response , better able to prevent the effects of drones by the external environment and fast transient response.
4.PMU integration features can save internal structure of space , contributes to miniaturization and more cost advantages as well as the entire system power supply system of unified and orderly.

PMU UAV ground remote control unit can supply power to the various components , ensure that all components of the normal power supply , and can filter out interference from outside noise to a certain extent, better guarantee the accuracy of the remote control , at the same time , enabling long lifetime of battery. UAV Flight Control master unit PMU power management module assembly unit to include portions of the flight control master , ESC power supply unit , etc. , to ensure the normal and stable fly control unit work.