Processing algorithm for low battery

A processing algorithm and low-battery technology, which is used in the measurement of electrical variables, current/voltage, and electricity. It can solve problems such as the inability to effectively improve median filtering, increase power consumption of equipment, and trigger low power, and increase standby time. Time, power consumption of the whole machine is reduced, and the effect of avoiding wake-up and power-on
CN113189499AInactive Publication Date: 2021-07-30SHENZHEN ELINK SMART CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN ELINK SMART CO LTD
Publication Date
2021-07-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a processing algorithm for low battery, which comprises the following steps: S1, starting; and initializing the system; S2, acquiring a voltage by an ADC (analog to digital converter); if the value of the acquired voltage is greater than 3.3 V, determining that a battery is in a normal working state, and entering a dormancy state; and if not, determining that the battery is a low-power state, and entering a dormancy state; S3, waking up; acquiring a voltage by the ADC; if the value of the acquired voltage is not greater than 3.3 V, entering a dormancy state again; and if the value of the acquired voltage is greater than 3.3 V and not greater than 3.4 V, determining that the battery is in an intermediate state; and S4, if the voltage is larger than 3.4 V, acquiring a voltage by the ADC again. According to the specific processing mode, frequent wake-up and startup caused by voltage fluctuation are effectively avoided, the trigger frequency of low power is reduced, the power consumption of the whole machine is reduced, and the standby time of equipment is prolonged.
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Description

[technical field]

[0001] The invention relates to the technical field of low-battery power processing algorithms, in particular to a low-battery power processing algorithm with outstanding application effects. [Background technique]

[0002] Products powered by lithium batteries often need to detect the battery power. Based on the consideration of cost reduction, most of them use the ADC built in the MCU to detect the voltage of the lithium battery and then convert it into power, instead of using an additional coulomb counter chip.

[0003] Since the current of the device is in a state of dynamic change during the working process, the voltage at both ends of the battery will also fluctuate up and down, and the voltage of the device in the sleep and wake-up states is also different, especially when the battery is in a low-battery critical state. The voltage fluctuations are more frequent.

[0004] A common low battery judgment algorithm is to set a threshold, such as 3.3V. Wh...

Claims

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