Eyelash curler and temperature control method thereof
A temperature control method and technology of a curling device are applied in the field of daily necessities, which can solve the problems of inaccurate temperature control and high cost, and achieve the effects of precise temperature control, improved safety and improved convenience.
Pending Publication Date: 2021-01-19
深圳市九思泰达技术有限公司
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Problems solved by technology
[0005] The invention proposes an eyelash curler and its temperature control method to solve the problems of inaccurate temperature control and high cost in the prior art
Method used
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific examples are only used to explain the present invention, but not to limit the present invention.
[0036] Such as figure 1 As mentioned above, the eyelash curler proposed by the present invention includes: function buttons, a control unit, a heating wire, an impedance measurement module, a gear position indicator light, a power indicator light, a charging module and a DC power interface.
[0037] figure 2 It is a schematic diagram of the temperature control method of the present invention. The control unit controls the heating element to heat the heating wire, and the impedance measurement module detects the impedance of the heating wire. The control unit acquires the impedance in real time and adjusts t...
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The invention discloses an eyelash curler and a temperature control method thereof. According to the temperature control method, a sectional PID algorithm is adopted to adjust the PWM duty ratio to control heating of a heating wire. The temperature control method comprises the following steps that when the difference value between the measured temperature of the heating wire and the target temperature is larger than or equal to T1, heating of the heating wire is controlled through proportional adjustment; when the difference value between the measured temperature of the heating wire and the target temperature is smaller than a set value T1 and larger than or equal to a set value T2, the temperature of the heating wire is collected once every other time S1, and proportional-integral adjustment is used for controlling heating of the heating wire; and when the difference value between the measured temperature of the heating wire and the target temperature is smaller than a set value T2, the temperature is collected once every other time S2, and the heating wire is controlled to be heated through proportional integral differential adjustment. The purpose of accurately controlling the temperature of the heating wire is achieved, the heating wire with the resistance temperature coefficient characteristic is used for replacing a customized thermosensitive element, and the product costis reduced.
Description
technical field [0001] The invention relates to the technical field of daily necessities, in particular to an eyelash curler and a temperature control method thereof. Background technique [0002] The electric eyelash iron is a beauty tool that curls the eyelashes by electric heating, and its core function is to control the temperature of the heating wire. Based on cost considerations, it is impossible to adopt a costly temperature control method. Therefore, how to achieve temperature control with the lowest possible cost has become the key to the development of electric eyelash curlers. The current common practices are: [0003] 1. Use empirical parameters to set the pulse width modulation (PWM) output duty cycle of the microcontroller to control the heating of the heating wire. Different temperature settings use different PWM duty ratios, heat generation and heat dissipation will eventually form a thermal balance to reach the set temperature. In this mode, there are the...
Claims
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Login to View More IPC IPC(8): G05D23/30A45D2/48
CPCA45D2/48G05D23/30
Inventor 崔若起戴凯黄秋
Owner 深圳市九思泰达技术有限公司