Real-time clock synchronization error correction method for fee-controlled smart energy meters
A smart energy meter and real-time clock technology, applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problems that affect the normal use of cost-controlled smart energy meter measurement and settlement, the impact of real-time clock accuracy, and the inconsistency of binary digits. To achieve the effect of enhancing the anti-interference ability of the clock, reducing the frequency of reading the external clock, and reducing the probability of being interfered
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[0035] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0036] Such as figure 1 As shown, the present invention provides a real-time clock synchronous error correction method for a fee-controlled smart electric energy meter. The electric energy meter is internally provided with a single-chip microcomputer, an external clock chip capable of generating an external clock, and an external memory storing clock data, and the single-chip microcomputer is respectively Connect with external clock chip and external memory. The real-time clock synchronization error correction method comprises the following steps:
[0037] S1. Create an internal clock consisting of an eight-digit array inside the microcontroller, set it as inside_date[8], and store seconds, minutes, hours, weeks, days, months, years, and checksums in this eight-digit array in turn; define at the same time A seven-digit array is used to store ...
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