Control system of facial mask beauty instrument

Abstract

According to the control system of the facial mask beauty instrument, different pieces of mask cloth are automatically recognized by recognizing the number of the electrodes, so that automatic switching of working modes of the facial mask beauty instrument is achieved, and the problem of manual switching of a user is solved; the polling detection technology is adopted to detect the electrode tip, so that error detection is avoided; during detection, the disadvantage that a single electrode is used as a detection electrode in a traditional system is overcome through the function of the reuse electrode; in addition, the EMS is used as an excitation source, and the normality of the output of the EMS is detected while the skin attaching state is detected, so that the detection precision of the electrode is improved.

Description

Technical Field

[0001] The present invention relates to the technical fields of wearable devices, electronic facial masks and electrode load identification, and in particular to a control system of a facial mask beauty instrument. Background Art

[0002] The electronic mask is a new type of special mask. Through the principle of microcurrent penetration, the electronic mask forms a low-intensity microcurrent to stimulate the skin and transport the active ingredients in the skin care products to the deep layer of the skin, thereby producing more collagen and elastin, thereby achieving the skin care effects of moisturizing, brightening the skin tone, soothing and repairing, and lifting and firming. The parts stimulated by the electronic mask include the eyes and the entire face. Electrodes are preset in various parts of the electronic mask. By applying voltage to the electrodes, the controller generates microcurrent to achieve the effect of stimulating the skin. With the development of science and technology, people's demand for facial skin care is gradually increasing, such as the demand for skin care only for most of the face or eyes, or for skin care for both the face and eyes at the same time.

[0003] Typically, in order to meet the different needs of users, such as facial or eye skin care only, users are required to manually switch the working mode of the electronic mask, and can only use fixed electrodes as detection electrodes, which limits the flexibility and detection accuracy of the electronic mask and reduces the user experience. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a control system for a facial mask beauty instrument.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a control system for a facial mask beauty instrument, including: a controller module, an EMS output module connected to the controller module, an EMS power supply module, a current identification module and a current identification module, and multiple electrode heads connected to the EMS output module; the controller module detects whether a loop is formed between the electrode heads through a rotation mechanism to obtain the number of electrode heads; and automatically switches the working mode of the facial mask beauty instrument based on the number of electrode heads.

[0006] Preferably, the EMS power module is used to supply power to the EMS output module, and the controller module regulates the output voltage of the EMS power module through a PID algorithm.

[0007] Preferably, a current detection resistor is provided in the current identification module, and the current detection resistor is connected in series in the EMS output module; during detection, the current detection resistor forms a loop with the electrode head and the skin.

[0008] Preferably, the current detection resistor is connected to the ground, and when the skin contacts to form a loop, the current flows back to the current detection resistor through the human body, and the current detection resistor converts the current into a voltage.

[0009] Preferably, the fit state between the mask and the skin is determined by detecting the voltage of the current detection resistor.

[0010] Preferably, the step of the controller module identifying the number of electrode heads comprises: Set the number of electrode heads, use each electrode head as a detection electrode in turn, and use the other electrode heads as voltage output electrodes in turn; If the current electrode head forms a loop with other electrode heads and the current electrode head is a bonded electrode, the number of electrode heads increases by 1; Then determine whether a circuit is formed between the bonded electrodes. If a circuit can be formed between all electrode heads, the number of electrode heads is confirmed.

[0011] The control system of a facial mask beauty instrument provided by the present invention has the following beneficial effects compared with the prior art: 1. Automatically identify the mask cloth, i.e., facial mask and eye mask, by detecting the number of electrodes, so as to realize automatic switching between facial mask and eye mask, and solve the problem of users manually switching the working mode of the mask beauty instrument.

[0012] 2. For electrode identification, reuse detection electrodes and functional electrodes to reduce the complexity of electrode arrangement.

[0013] 3. By polling to detect whether a loop is formed between the electrodes, misdetection of electrodes can be avoided, overcoming the disadvantage of using a single electrode head as a detection electrode in the traditional method.

[0014] 3. During the detection process, the EMS signal is used as the excitation signal through the controller software setting. The current between the electrodes is detected when it is output. While detecting the skin-attaching state, the normality of the EMS output can also be detected to improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A principle block diagram of a control system of a facial mask beauty instrument provided by the present invention; Figure 2 A schematic diagram of electrode detection of a control system of a facial mask beauty instrument provided by the present invention; Figure 3 A flow chart of electrode polling detection in a control system of a facial mask beauty instrument provided by the present invention. DETAILED DESCRIPTION

[0016] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0017] The present invention provides a control system for a facial mask beauty instrument, which comprises: a controller module, an EMS output module connected to the controller module, an EMS power supply module, a current identification module and a plurality of electrode heads connected to the current identification module, and the EMS output module; the controller module detects whether a loop is formed between the electrode heads through a rotation mechanism to obtain the number of electrode heads; and the working mode of the facial mask beauty instrument is automatically switched based on the number of electrode heads.

[0018] Specifically, the present invention automatically identifies the type of mask, i.e., facial mask and eye mask, by detecting the number of electrode heads, so as to realize automatic switching between facial mask and eye mask and solve the problem of manual switching by users. In addition, for the identification of electrode heads, by multiplexing the electrode heads, the electrode heads can be used as both detection electrodes and functional electrodes to reduce the complexity of electrode arrangement. Polling is used to detect whether a loop is formed between the electrodes to avoid misdetection of electrodes, thereby overcoming the disadvantage of a single electrode head as a detection electrode in the traditional system. During the detection process, the EMS signal is set as an excitation signal through the controller software, and the current between the electrode heads is detected when it is output. While detecting the skin-adhering state, the normality of the EMS output can also be detected to improve the detection accuracy.

[0019] like Figure 1 , 2 As shown, the EMS power module is used to power the EMS output module. The current identification module is provided with a current detection resistor, which is connected in series in the EMS output module. The controller module uses a PID algorithm to adjust the power generated by the EMS power module. The EMS output module adopts an H-bridge structure. The controller module controls the EMS power supply to transmit the pulse voltage to the corresponding electrode through the output module.

[0020] In this embodiment, the steps of the controller module controlling the output voltage of the EMS power module through the PID algorithm are as follows: Identify the current voltage, compare it with the set voltage, calculate the current voltage deviation to get the proportional value; Calculate the sum of the deviations over a period of time and calculate its integral value; obtain the differential value by calculating the difference between the deviations, and obtain the voltage calculation value by combining the three adjustment rules of proportion, integration, and differentiation to adjust the output voltage. Among them, the current error can be obtained through proportional calculation, and then the deviation is accumulated continuously through integration. When the voltage value tends to a steady state, its voltage error is zero, which plays a role in eliminating ripples and improving detection accuracy. Among them, by differentiating the voltage calculation value, the future voltage error can be predicted, which further plays a role in rapid regulation.

[0021] like Figure 3 As shown, in this embodiment, the process of the controller detecting the number of electrode heads through the polling mechanism is: Set the number of fixed electrode heads to N, each electrode head takes turns as a detection electrode, and the other electrode heads take turns as voltage output electrodes, that is, if the current electrode head is a detection electrode, the other electrode heads are output electrodes, and so on. If the current detection module detects that the current of the current electrode head is greater than the set voltage threshold, it indicates that the current electrode head forms a loop with other electrode heads; if the current detection electrode head is a fitted electrode, the number of electrode heads is increased by 1; after the fitted electrode is identified, the fitted electrodes are mutually detected to determine whether a loop is formed between the fitted electrodes. When a loop can be formed between all electrode heads, the number of electrode heads is confirmed. For example, assuming that electrode No. 1 and electrode No. 2 are a pair of detection loops, when electrode No. 1 outputs EMS positive voltage, electrode No. 2 is used as a detection electrode; vice versa. By mutual detection, it is ensured that the EMS output and electrode loop (skin-fitting state) are normal, and double judgment improves detection accuracy.

[0022] In another embodiment, the beauty instrument can identify different types of masks through the built-in electrode head and automatically adjust the EMS output mode. The user does not need to switch manually, the system automatically detects and optimizes the fitting effect, which is suitable for a variety of facial masks and eye masks.

[0023] In this embodiment, the current identification module identifies the fit between the skin and the beauty device by identifying the impedance of the built-in current detection resistor, specifically: The current detection resistor in the current identification module is connected to the ground. When the skin contacts to form a loop, the current flows back through the human body to the current detection resistor, which converts it into voltage. At this time, the electrode head can be used as an EMS output electrode or as a current detection electrode. No additional detection electrode is required, which further saves the design space and design cost of beauty equipment.

[0024] The controller detects the current voltage on the current detection resistor and calculates the current between the electrodes through the current I=U / R. Generally, when the fit is not good and no loop is generated, the current is 0, and when it is fully fitted, the current reaches the maximum. By adjusting the membrane cloth and identifying the degree of fit, the current threshold range is obtained, and the fit of the mask is judged by setting the current threshold.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A control system for a facial mask beauty instrument, characterized in that: include: A controller module, an EMS output module, an EMS power module, a current identification module and a plurality of electrode heads connected to the controller module; the controller module detects whether a loop is formed between the electrode heads through a rotation mechanism to obtain the number of electrode heads; and automatically switches the working mode of the facial mask beauty instrument based on the number of electrode heads.

2. The control system of the facial mask beauty instrument according to claim 1, characterized in that: The EMS power supply module is used to supply power to the EMS output module, and the controller module regulates the output voltage of the EMS power supply module through a PID algorithm.

3. The control system of the facial mask beauty instrument according to claim 1, characterized in that: The current identification module is provided with a current detection resistor, which is connected in series with the EMS output module; during detection, the current detection resistor forms a loop with the electrode head and the skin.

4. The control system of the facial mask beauty instrument according to claim 3, characterized in that: The current detection resistor is connected to the ground. When the skin contacts to form a loop, the current flows back to the current detection resistor through the human body, and the current detection resistor converts the current into a voltage.

5. The control system of the facial mask beauty instrument according to claim 3, characterized in that: The fit between the mask and the skin can be determined by detecting the voltage of the current detection resistor.

6. The control system of the facial mask beauty instrument according to claim 1, characterized in that: The step of the controller module identifying the number of electrode heads comprises: Set the number of electrode heads, use each electrode head as a detection electrode in turn, and use the other electrode heads as voltage output electrodes in turn; If the current electrode head forms a loop with other electrode heads and the current electrode head is a bonded electrode, the number of electrode heads increases by 1; Then determine whether a circuit is formed between the bonded electrodes. If a circuit can be formed between all electrode heads, the number of electrode heads is confirmed.

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