Data broadcasting method for low power consumption circuit and low power consumption circuit

Abstract

The invention relates to the field of wireless communication and discloses a data broadcasting method for a low power consumption circuit and the low power consumption circuit. In the data broadcasting method for a low power consumption circuit and the low power consumption circuit, the low power consumption circuit comprises an external clock and a microcontroller used for wireless communication, wherein the microcontroller comprises a normal operation mode, a first sleep mode and a second sleep mode. In the first sleep mode, a sleep timer in the microcontroller is started, in the second sleep mode, the sleep timer in the microcontroller is closed, the power consumption of the microcontroller in the first sleep mode is higher than that of the microcontroller in the second sleep mode, and the power consumption of the external clock is lower than that of the microcontroller in the first sleep mode. Before a wireless broadcasting signal is retransmitted, the microcontroller sleeps in the first sleep mode; after all retransmission is completed, the microcontroller enters the second sleep mode and is awakened through the external clock lower in power consumption. Accordingly, precious electrical energy can be saved, and long-time operation is achieved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a data broadcasting method of a low power consumption circuit and the low power consumption circuit. Background technique [0002] In recent years, smart devices have become closer to people's lives, and power saving capability is one of the important technical indicators. Especially for those a large number of embedded small devices, frequent replacement of batteries not only causes inconvenience in work, but is also unrealistic. The low-power handheld RFID patrol device introduced in the Chinese patent No. 200810106017.X uses the microcontroller itself to judge the scene of use, and controls itself to enter the sleep mode when it is not reading or writing tags, so that the entire system operates at a minimum power consumption operation. This design uses the switching of the working mode to achieve the purpose of low power consumption. It is used in many existing products...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that the microcontroller itself controls the switching from the power-saving mode to the working mode, which means that the microcontroller also remains "awake" in the power-saving mode.

The microcontroller needs to maintain the ability to wake itself up, so its large light sleep current is the reason why the power saving method of mode switching cannot be further improved. This light sleep state is the bottleneck that leads to power optimization.

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