Cloth quantity sensing control method compatible with 50Hz and 60Hz actual environments for pulsator washing machine

Abstract

The invention discloses a cloth quantity sensing control method compatible with 50Hz and 60Hz actual environments for a pulsator washing machine, and the method comprises the following steps: S1, completing the preprocessing of a machine, entering a weighing test mode, and displaying a pulse value after weighing; step S2, after the exploration is completed, fitting exploration data of the machine; step S3, software implementation; s4, carrying out empty barrel pulse value calibration under 50Hz / 60Hz, and carrying out effect verification under 50Hz / 60Hz user environments respectively; and S5, judging whether the test result meets the enterprise standard, the standard, the parameter solidification and the quality confirmation, if not, adjusting the boundary value, and repeating the step S4 after the boundary value is adjusted. On the basis of realization of a cloth quantity sensing function of an existing pulsator washing machine, the cloth quantity sensing device can adapt to actual power grid conditions of foreign customers, and the pulsator washing machine is controlled to realize consistency of cloth quantity weighing results under the working conditions of 50Hz and 60Hz, so that a fuzzy weighing function of the pulsator washing machine meets customer requirements.

Description

Technical field:

[0001] The present invention relates to a cloth amount sensing and control method for a pulsator washing machine compatible with 50Hz and 60Hz actual environments, belonging to the technical field of washing machines. Background technology:

[0002] Currently, fabric load sensing and control for pulsator washing machines is based on the stable domestic 220V / 50Hz operating conditions. This is based on the pulse values collected from multiple machines with varying loads of clothing, and water level grading is performed based on the correlation between clothing weight and pulse values. Therefore, when washing machines manufactured using this pulsator fabric load sensing and control method enter the international market, due to the coexistence of 50Hz and 60Hz operating frequencies, the actual pulse values of the same machine operating at 60Hz may be greater than the calibrated data at 50Hz. This can easily cause a large amount of clothing to be graded to a low water level, resulting in inaccurate fabric load sensing and failure to meet customer application requirements.

[0003] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Summary of the invention:

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a cloth amount sensing control method for a pulsator washing machine that is compatible with the actual environments of 50Hz and 60Hz. The method can adapt to the actual power grid conditions of foreign customers, control the pulsator washing machine under 50Hz and 60Hz working conditions, achieve consistency in cloth amount weighing results, and make the fuzzy weighing function of the pulsator washing machine meet customer needs.

[0005] The technical solution adopted by the present invention is: a cloth amount sensing control method for a pulsator washing machine compatible with 50Hz and 60Hz actual environments, the steps are as follows:

[0006] Step S1: After the machine pre-processing is completed, it enters the weighing test mode and displays the pulse value after weighing;

[0007] Step S2: After the survey is completed, the survey data of the machine is fitted;

[0008] Step S3, software implementation;

[0009] Step S4, calibrating the empty barrel pulse value at 50Hz / 60Hz, and verifying the effect in the user environment of 50Hz / 60Hz respectively;

[0010] Step S5, determine whether the test results meet the enterprise standards, meet the standards, curing parameters, and quality confirmation. If not, adjust the boundary value. After adjusting the boundary value, repeat step S4.

[0011] Furthermore, in step S1, data calibration is performed on the pulse values in the empty barrel and loaded states at 50Hz / 60Hz respectively, and the number of motor pulses in the no-load state is recorded as the reference value T0, and when loaded, the difference ΔT=T0-T1 is used to match it with the preset clothing weight model.

[0012] Furthermore, step S3 is specifically as follows:

[0013] When S3.1 performs empty barrel weighing calibration, the current operating frequency of the whole machine is determined through the zero-crossing detection circuit, and the weighing pulse value and frequency information are stored in the EEPROM;

[0014] During S3.2 user use, fuzzy weighing is performed, the current operating frequency is determined, and the difference between the empty barrel pulse value and the loaded pulse value is calculated;

[0015] S3.3 selects the corresponding weighing classification table based on the empty tub calibration frequency and user usage frequency, determines the amount of clothes, and divides the water level into classifications.

[0016] The present invention has the following beneficial effects: It implements the fabric load sensing function of existing pulsator washing machines by calibrating pulse values under different operating conditions, both at 50Hz and 60Hz, for both empty and loaded drums. Only the actual machine operating conditions (50Hz / 60Hz) are determined, and the acquired data is fitted, graded, and verified. This improves the accuracy of water level grading results under various operating conditions. This avoids customer complaints caused by low water level grading under heavy loads, resulting in insufficient water to submerge clothing. Description of the drawings:

[0017] Figure 1 Schematic diagram of the cloth amount sensing control method for the pulsator washing machine of the present invention that is compatible with 50Hz and 60Hz actual environments.

[0018] Figure 2 Schematic diagram of empty barrel weighing at 50 Hz and user usage cutoff values at 50 Hz.

[0019] Figure 3 Schematic diagram of empty barrel weighing at 50Hz and user usage cutoff value at 60Hz.

[0020] Figure 4 Schematic diagram of empty barrel weighing at 60Hz and user usage cutoff values at 60Hz.

[0021] Figure 5 Schematic diagram of empty barrel weighing at 60Hz and user usage cutoff value at 50Hz. Specific implementation method:

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] The fabric amount sensing control method of the pulsator washing machine of the present invention is compatible with 50Hz and 60Hz actual environments, and the specific steps are as follows:

[0024] Steps S1, S1.1: Machine pre-processing is complete. S1.2: Enter weighing test mode, and the pulse value is displayed after weighing. Data calibration is required for the pulse values in both empty and loaded states at 50Hz / 60Hz. The motor pulse count in the unloaded state is recorded as the baseline value (T0). Under load, the difference (ΔT = T0 - T1) is used to match the preset clothing weight model.

[0025] Taking a 6kg induction motor pulsator as an example, the data is as follows:

[0026]

[0027] Step S2: After the survey is completed, the survey data of the machine is fitted and the weighing cutoff value (50Hz empty barrel for 50 / 60Hz usage scenario and 60Hz empty barrel for 50 / 60Hz usage scenario) is calculated.

[0028] The cutoff value is Figures 2 to 5 shown.

[0029] Step S3 is implemented by software. S3.1 When performing empty barrel weighing calibration, the current operating frequency of the entire machine is determined through the zero-crossing detection circuit, and the weighing pulse value and frequency information are stored in the EEPROM. S3.2 During user use, fuzzy weighing is performed, the current operating frequency is determined, and the difference between the empty barrel pulse value and the pulse value under load is calculated. S3.3 Based on the empty barrel calibration frequency and the user's usage frequency, the corresponding weighing classification table is selected to determine the amount of clothing and perform water level classification.

[0030] Step S4: Calibrate the empty barrel pulse value at 50Hz / 60Hz, and verify the effect in the user environment of 50Hz / 60Hz respectively. The verification results are as follows:

[0031]

[0032]

[0033] Step S5: Determine whether the test results meet the company's standards and curing parameters, and confirm quality. If not, adjust the threshold. After adjusting the threshold, repeat step S4. This allows for upward sensing of water level binning results, preventing downward sensing. This ensures accuracy while accommodating differences across the entire machine.

[0034]

[0035]

[0036] The pulsator washing machine of the present invention is compatible with the cloth amount sensing control method of 50Hz and 60Hz actual environments. The machine with fuzzy weighing, based on the back electromotive force generated by the inertial rotation of the motor and combined with the zero-crossing judgment of the machine usage environment, makes the machine's cloth amount sensing algorithm compatible with different usage scenarios of 50 / 60Hz, improves the cloth amount sensing accuracy in this usage scenario, thereby ensuring the consistent and controllable weighing performance of the pulsator washing machine.

[0037] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A cloth amount sensing and control method for a pulsator washing machine compatible with both 50Hz and 60Hz actual environments, characterized by: Here are the steps: Step S1: After the machine pre-processing is completed, it enters the weighing test mode and displays the pulse value after weighing; Step S2: After the survey is completed, the survey data of the machine is fitted; Step S3, software implementation; Step S4, calibrating the empty barrel pulse value at 50Hz / 60Hz, and verifying the effect in the user environment of 50Hz / 60Hz respectively; Step S5, determine whether the test results meet the enterprise standards, meet the standards, curing parameters, and quality confirmation. If not, adjust the boundary value. After adjusting the boundary value, repeat step S4.

2. The cloth amount sensing control method for a pulsator washing machine compatible with 50Hz and 60Hz actual environments according to claim 1, characterized in that: In step S1, the pulse values in the empty barrel and loaded states are calibrated at 50Hz / 60Hz respectively. The number of motor pulses in the no-load state is recorded as the reference value T0, and when loaded, the difference ΔT=T0-T1 is used to match it with the preset clothing weight model.

3. The cloth amount sensing control method for a pulsator washing machine compatible with both 50Hz and 60Hz actual environments according to claim 2, characterized in that: Step S3 is as follows: When S3.1 performs empty barrel weighing calibration, the current operating frequency of the whole machine is determined through the zero-crossing detection circuit, and the weighing pulse value and frequency information are stored in the EEPROM; During S3.2 user use, fuzzy weighing is performed, the current operating frequency is determined, and the difference between the empty barrel pulse value and the loaded pulse value is calculated; S3.3 selects the corresponding weighing classification table based on the empty tub calibration frequency and user usage frequency, determines the amount of clothes, and divides the water level into classifications.

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