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A water purifier power failure detection method

A technology of power failure detection and water purifier, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve problems such as abnormal working status, inaccurate data, data loss, etc., and achieve the effect of avoiding data loss and abnormal machine operation

Active Publication Date: 2020-06-12
HONGYANG HOME APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current water purifiers work without power for a long time; data is often stored during the work process; if the machine is powered off at this time, it is very easy to cause data loss, resulting in inaccurate data or abnormal working status

Method used

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  • A water purifier power failure detection method
  • A water purifier power failure detection method
  • A water purifier power failure detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A water purifier power failure detection method, such as figure 1 As shown, the water purifier includes: a system power supply 1, a load 2, a first resistor 3, a second resistor 4, a Zener diode 5 and a main control chip 6; the main control chip 6 is used to sample the load current or load voltage ; Wherein, the system power supply 1, the load 2 and the first resistor 3 are connected in series successively and then grounded; the Zener diode 5 is connected in parallel between the sampling terminal of the main control chip 6 and the ground; end connected, and the other end is connected between the load 2 and the first resistor 3; as figure 2 As shown, the water purifier power-off detection method includes step S101:

[0056]S101. Determine whether the water purifier is powered off according to the magnitude of the sampling current or the magnitude of the sampling voltage of the main control chip.

[0057] In the embodiment of the present invention, the system power sup...

Embodiment 2

[0067] Based on the first embodiment, this embodiment provides a specific embodiment of judging whether the water purifier is powered off by the magnitude of the sampling current of the main control chip.

[0068] Optionally, as in Figure 4 As shown, judging whether the water purifier is powered off by the magnitude of the sampling current of the main control chip 6 may include S201-S203:

[0069] S201. When the water purifier is working, sample the load current, and compare the collected first sampled current with a pre-measured reference current;

[0070] S202. When the first sampling current is greater than or equal to the reference current, it is determined that the water purifier is not powered off;

[0071] S203. When the first sampling current is less than the reference current, re-sample the load current within the preset first time period, and compare the second sampling current obtained by sampling with the preset current threshold; when the second sampling current...

Embodiment 3

[0080] This embodiment further limits the current sampling method on the basis of the second embodiment.

[0081] Optionally, the reference current is obtained by averaging multiple samples of the load current, and the reference current is updated using a moving average filtering method.

[0082] In the embodiment of the present invention, the water purifier can continuously sample N times of current when it is working normally, and the current of N times of sampling is averaged as the reference current I D , due to the current I at the sampling terminal B point of the main control chip 6 B is the sampling current, then I D = I B =(I 1 +I 2 +…+I n ), among them, I 1 ~I n are the sampling currents of N times respectively. The scheme of this embodiment can verify the accuracy of the sampling current and avoid large errors caused by a single sampling.

[0083] In the embodiment of the present invention, the reference current may also be updated using a moving average fi...

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Abstract

The embodiment of the invention discloses a water purifier power failure detection method. A water purifier includes a system power supply, a load, a first resistor, a second resistor, a voltage stabilizing diode and a main control chip; the main control chip is used for sampling a load current or a load voltage; the system power supply, the load and the first resistor are sequentially connected in series and is then connected to the ground; the voltage stabilizing diode is connected between the sampling end of the main control chip and the ground in parallel; one end of the second resistor isconnected with the sampling end of the main control chip, and the other end is connected between the load and the first resistor; and the water purifier power failure detection method includes judging whether power failure of the water purifier occurs through the magnitude of the sampling current or sampling voltage of the main control chip. Through the scheme of the embodiment, the power failuresituation of the water purifier is detected in time, thereby avoiding data loss and abnormal work of the machine.

Description

technical field [0001] Embodiments of the present invention relate to water treatment equipment control technology, in particular to a method for detecting power failure of a water purifier. Background technique [0002] The current water purifiers work without power for a long time; they often need to store data during the work process; if the machine is powered off at this time, it is very easy to cause data loss, resulting in inaccurate data or abnormal working status. Contents of the invention [0003] The embodiment of the present invention provides a water purifier power-off detection method, which can detect the power-off situation of the water purifier in time, thereby avoiding data loss and abnormal operation of the machine. [0004] In order to solve the above technical problems, the embodiment of the present invention adopts the following technical solutions: [0005] A water purifier power-down detection method, the water purifier includes: a system power supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/54G01R31/56G01R19/165
CPCG01R19/16571G01R31/50
Inventor 王旭宁唐拥华
Owner HONGYANG HOME APPLIANCES
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