Timing time compensation method

Abstract

The invention provides a timing time compensation method. The timing time compensation method comprises the following compensation steps of: S1, inputting an initially-set timing time Ts; S2, judging whether the initially-set timing time Ts is greater than a timing time constant Tu; if not, skipping to a step S3; if yes, skipping to a step S4; S3, defining an actually-set timing time Tt to be equal to the initially-set timing time Ts; and S4, defining the actually-set timing time Tt to be equal to R*P+Ts, wherein P represents for an integer value obtained by dividing the initially-set timing time Ts by the timing time constant Tu and rounding, R represents for compensation time, and the compensation time is a difference value between the timing time constant Tu and the actually-set timing time Tt in the same timing time period. By virtue of the present invention, the crystal vibration errors can be basically eliminated, thereby ensuring that the difference value between the timing time and the actually-set timing time is not increased when the timing time is prolonged; the accuracy of the timing time is improved; the errors are reduced.

Description

technical field [0001] The invention relates to a time compensation method, in particular to a timing compensation method suitable for electronic products with a timing function. Background technique [0002] The timing function is often used in many household appliances, such as air conditioners, refrigerators, washing machines, and rice cookers, etc., and the timing time is often used to control the power on and off; therefore, the accuracy of the timing time has become an important factor in the current technology development, especially In some medical electronic products, the accuracy of timing is required to be higher. [0003] At present, electronic products involving timing functions often have low accuracy and large errors due to the small time error of the crystal oscillator of the main control chip and the many functions that the main control chip has to handle. ; Especially when the timing reaches more than 10 hours, the error becomes more obvious. [0004] Tha...

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Problems solved by technology

[0003] At present, electronic products involving timing functions often have low accuracy and large errors due to the small time error of the crystal oscillator of the main control chip and the many functions that the main control chip has to handle. ; Especially when the timing time reaches more than 10 hours, the error becomes more obvious

[0004] That is to say, the electronic products with timing function on the market now have the following defects: (1) the timing time is greatly affected by the crystal oscillator of the main control chip; (2) when the timing time is too long, the longer the timing time, the accumulated The greater the error is, the farther it is from the real value of the timing time; (3) the timing time is greatly affected by the amount of program processed by the master control chip, and the larger the amount of program processed by the master control chip, the greater the error of the timing time

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