Low-interference food processor control method

A food processing machine and control method technology, which is applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of large circuit device parameters, high cost, and control of sacrificing product functions, so as to reduce electromagnetic Interfering, life-prolonging, reducing-requirement effects

Active Publication Date: 2015-09-30
JOYOUNG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The other is to directly use anti-electromagnetic interference circuits to solve all of them. Although both methods can be solved, the first method sacrifices the control of product functions and reduces the inte...

Method used

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  • Low-interference food processor control method
  • Low-interference food processor control method
  • Low-interference food processor control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] A low-interference food processing machine control method of the present invention includes a control circuit, the control circuit includes a load for food processing, a load circuit for driving the load, and a control chip, the load circuit includes a switch, the The switch is a relay, wherein the control chip detects the switch delay time of the relay, and adjusts the trigger control switch time of the relay according to the corresponding switch delay time.

[0049] Such as figure 1 As shown, in this embodiment, the control circuit includes a power supply zero-crossing detection circuit and a relay delay detection circuit, the load is connected to the power supply through the load circuit, the control chip is connected to the load circuit, and the control chip is connected to the load circuit through the load circuit. The circuit drives the load to work, the input terminal of the power supply zero-crossing detection circuit is electrically connected between the power ...

Embodiment 2

[0076] The difference between this implementation and the above-mentioned Embodiment 1 lies in the delay time of turning on the relay and the delay time of turning off the relay in the self-checking process. In this embodiment, the food processing machine is provided with a self-inspection program for relay switch delay, wherein the self-inspection program includes a relay on-delay time detection program and a relay off-delay time detection program.

[0077] In this embodiment, after the food processing machine enters the self-inspection program, it first detects the relay turn-on delay time, and then detects the relay turn-off delay time, such as Figure 11 As shown, at this time, the control chip first detects the period T of the zero-crossing signal through the power supply zero-crossing detection circuit. After determining the zero-crossing signal period, the control chip detects the rising edge of the zero-crossing signal ZERO1 (the control chip turns on the relay and star...

Embodiment 3

[0084] The difference between this embodiment and the above embodiment is that the control chip has built-in relay reference delay times TDon and TDoff, and when the relay switching delay time detected by the control chip is greater than the reference delay time, the control chip will give an early warning prompt . The control chip sets a reference delay time according to the first detection of the relay switch delay time.

[0085] The control chip can automatically identify the contact loss of the relay by detecting Ton and Toff and comparing the time changes of TDon and TDoff. When the life of the relay expires or is about to expire, the corresponding reminder is given to remind the user to replace the relay.

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PUM

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Abstract

The invention provides a low-interference food processor control method. According to the method, a control circuit is adopted; the control circuit comprises a load used for performing food processing, a load circuit used for driving operation of the load, and a control chip; the load circuit comprises a switch; the switch is a relay. The control circuit is characterized in that the control chip is used for detecting the delay time of a relay switch and regulating the trigger control over the on-off time of a relay according to the corresponding on-off delay time. A relay delay detection circuit is arranged, so that the on-off delay time of a relay contact can be automatically recognized by use of the theory that the on-off waveforms of the relay are different; during a function program operation process, the trigger control time of the relay switch is regulated according to the recognized delay time so as to ensure that the relay is triggered at a zero-crossing point of a power supply, so that the service life of the relay is prolonged to a certain extent, and electromagnetic interference brought by on-off action is also reduced.

Description

technical field [0001] The invention relates to a food processor, in particular to a control method for a low-interference food processor. Background technique [0002] Food processors have been used by more and more home users due to their quickness and convenience. The existing commonly used household food processors basically include the following types: electric heating appliance food processors, electric appliance food processors, and food processors combining electric heating and electric heating to achieve crushing or heating and cooking of materials. The crushing of materials is generally carried out by motors, and the heating of materials is carried out by heating devices. In the prior art, motors are inductive components, and the heating devices generally also use resistive heating loads. In the control of food processing machines, in order to realize intelligent pulping, semiconductor electronic switching devices such as thyristors are generally used for the cont...

Claims

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Application Information

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IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 王旭宁余青辉金文伟余旦
Owner JOYOUNG CO LTD
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