The invention discloses a low-power-consumption
quick start awakening method for an acquisition terminal. According to the scheme, the acquisition terminal comprises a main control module, an auxiliary control module and a power supply switching circuit, and a rechargeable low-leakage-current battery
capacitor is adopted as a
standby power supply; during normal power-on, the terminal is powered by the main
power module, the main control module works in a high-performance mode, the
clock module and the
liquid crystal screen module are switched to the main control module through the multi-channel analog switch, and the auxiliary control module performs
voltage sampling of the main power supply and the
standby power supply and charging control of the
standby power supply. The main control module and the auxiliary control module are simultaneously communicated with the metering
chip to read data; when the power-off key is awakened, the multi-channel analog switch is switched to the auxiliary control module, and only a few modules such as the auxiliary control module work. Through cooperation of the main
power module, the standby
power module, the power supply switching circuit and the like, the problems of long key wakeup starting time, high
power consumption and low data reading efficiency are solved, and rapid key wakeup starting, low
power consumption and improvement of the data reading efficiency of the acquisition terminal are realized.