Contact detection assembly and high-frequency output equipment

Abstract

The utility model discloses a contact detection assembly and a high-frequency output device, and relates to the technical field of skin detection. The high-frequency output device comprises a treatment head, and the contact detection assembly comprises a plurality of detection areas which are respectively arranged at the energy transmitting end of the treatment head and are respectively arranged at the edge of the energy transmitting end; the skin contact detection circuit is provided with a plurality of detection ends, and the detection ends are electrically connected with the detection areas in a one-to-one correspondence mode; wherein the skin contact detection circuit is used for determining the contact state of the energy transmitting end and the skin of the user according to the electric signal parameters of the multiple detection areas. The utility model aims to improve the safety when the high-frequency output equipment is used.

Description

Technical Field

[0001] The utility model relates to the technical field of skin detection, in particular to a contact detection component and a high-frequency output device. Background Art

[0002] Traditional skin contact detection is mostly implemented using a capacitive contact detection circuit. When the skin approaches or touches the sensor in the detection circuit, the surrounding electric field is changed, causing a change in the capacitance value, thereby enabling the device to detect the skin contact status. However, this detection method also has certain limitations. For example, in some phototherapy products, in order to prevent light leakage from causing harm to the human body (such as the eyes), the standard requires that the skin completely cover the light outlet before light can be emitted. However, this detection method can only detect whether the area that can be detected by the capacitive contact detection circuit is close to or in contact with the skin, but cannot detect whether the skin completely covers the light outlet. Therefore, this detection method cannot effectively avoid the problem of energy overflow when the energy output device is used because the energy output end fails to fully fit the user's skin. Utility Model Content

[0003] The main purpose of the utility model is to provide a contact detection component, aiming to improve the safety when using high-frequency output equipment.

[0004] To achieve the above-mentioned purpose, the contact detection component proposed in the present invention is applied to a high-frequency output device, wherein the high-frequency output device includes a treatment head, and the contact detection component includes:

[0005] A plurality of detection areas, each of which is provided at the energy emitting end of the treatment head and at the edge of the energy emitting end;

[0006] a skin contact detection circuit, the skin contact detection circuit comprising a main control circuit and a skin detection circuit; the skin detection circuit having a plurality of detection terminals, the plurality of detection terminals of the skin detection circuit being electrically connected to the plurality of detection areas in a one-to-one correspondence; the main control circuit being electrically connected to the skin detection circuit;

[0007] In which, the skin detection circuit is used to output a corresponding detection result signal based on the electrical signal parameters of the detection area; the main control circuit is used to determine the contact state between the energy emitting end and the user's skin based on multiple detection result signals; the multiple detection ends of the skin contact detection circuit include the multiple detection ends of the skin detection circuit.

[0008] In one embodiment, the main control circuit includes a main control chip, a first resistor, and a second resistor;

[0009] In which, the main control chip has a clock pin and a data pin respectively electrically connected to the skin detection circuit; the first end of the first resistor and the first end of the second resistor are respectively electrically connected to the first power supply end, and the second end of the first resistor is electrically connected to the data pin; the second end of the second resistor is electrically connected to the clock pin.

[0010] In one embodiment, the skin contact circuit includes a skin detection chip, a plurality of detection resistors, a plurality of impedance matching resistors, and a plurality of detection terminals;

[0011] Wherein, the skin detection chip includes multiple detection pins and multiple communication pins; each of the detection pins is electrically connected to a corresponding detection end via a detection resistor; each of the communication pins is electrically connected to a corresponding main control circuit via an impedance matching resistor.

[0012] In one embodiment, the skin contact detection circuit further comprises a sensitivity setting terminal for receiving a sensitivity setting signal.

[0013] In one embodiment, the skin contact detection circuit further includes a plurality of sensitivity setting circuits, and the plurality of sensitivity setting circuits are electrically connected to the plurality of detection areas in a one-to-one correspondence.

[0014] In one embodiment, the sensitivity setting circuit includes a capacitor, a first end of the capacitor is connected to the detection area, and a second end of the capacitor is grounded.

[0015] In one embodiment, the contact detection component includes an adapter insertion detection circuit for detecting the insertion status of the adapter and outputting a corresponding insertion detection signal;

[0016] The skin contact detection circuit is used to determine the contact state between the energy transmitting end and the user's skin based on the electrical signal parameters of the plurality of detection areas and the insertion detection signal.

[0017] In one embodiment, the adapter insertion detection circuit is electrically connected to the sensitivity setting terminal, and the skin contact detection circuit is further configured to receive the insertion detection signal and switch the sensitivity parameter.

[0018] In one embodiment, when the skin contact detection circuit includes a main control circuit and a skin detection circuit, the adapter insertion detection circuit is electrically connected to the main control circuit and / or the skin detection circuit.

[0019] In one embodiment, the adapter insertion detection circuit is electrically connected to the main control circuit and the skin detection circuit respectively, and the adapter insertion detection circuit includes:

[0020] a first insertion detection circuit, wherein an output end of the first insertion detection circuit is electrically connected to the main control circuit, and is configured to detect an insertion state of the adapter and output a first insertion detection signal to the main control circuit;

[0021] a second insertion detection circuit, wherein an output end of the second insertion detection circuit is electrically connected to the skin detection circuit, and is configured to detect an insertion state of the adapter and output a second insertion detection signal to the skin detection circuit;

[0022] The insertion detection signal includes a first insertion detection signal and a second insertion detection signal.

[0023] In one embodiment, the first insertion detection circuit includes an eighth resistor, a ninth resistor, a fourth capacitor, a voltage stabilizing diode, and an adapter insertion terminal;

[0024] Among them, the first end of the eighth resistor is electrically connected to the adapter insertion end, the second end of the eighth resistor is electrically connected to the first end of the ninth resistor, the first end of the fourth capacitor, the cathode of the voltage regulator diode, and the main control circuit; the second end of the ninth resistor is electrically connected to the second end of the fourth capacitor, the anode of the voltage regulator diode, and the ground end.

[0025] In one embodiment, the second insertion detection circuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, a switch tube, and an adapter insertion terminal;

[0026] Among them, the first end of the tenth resistor is electrically connected to the adapter insertion end, the second end of the tenth resistor is electrically connected to the first end of the eleventh resistor and the controlled end of the switching tube; the second end of the eleventh resistor is electrically connected to the second end of the switching tube and the ground end; the first end of the twelfth resistor is electrically connected to the first power supply end, and the second end of the twelfth resistor is electrically connected to the first end of the switching tube and the skin detection circuit.

[0027] In one embodiment, the skin contact detection circuit further includes a filter circuit, and the filter circuit includes a first capacitor, a second capacitor, a third capacitor, a first inductor, a second inductor, a first power supply terminal, and a second power supply terminal;

[0028] The first end of the first capacitor is electrically connected to the VDD pin of the skin detection chip, the second power supply terminal, the first end of the second capacitor, and the first end of the first inductor. The second end of the first capacitor is electrically connected to the VSS pin of the skin detection chip, the second end of the second capacitor, the first end of the second inductor, and the ground terminal. The second end of the first inductor is electrically connected to the first end of the third capacitor and the first power supply terminal, and the second end of the second inductor is electrically connected to the second end of the third capacitor and the ground terminal. The filter circuit is used to filter out high-frequency interference from the voltage input by the second power supply and output it to the first power supply terminal.

[0029] The present invention also provides a high-frequency output device, which includes a treatment head and a contact detection component as described in any one of the above items.

[0030] The present invention divides the energy emitting end of the treatment head of a high-frequency output device into multiple detection zones, and provides detection terminals corresponding to each of the multiple detection zones. Multiple electrical signal parameters are acquired by the multiple detection terminals, and judgment is made as to whether the multiple electrical signal parameters meet a judgment criterion, thereby determining the contact status between each zone of the energy emitting end and the user's skin. When the detection zones corresponding to the multiple electrical signal parameters are all confirmed to be in contact with the user's skin, it can be determined that the energy emitting end of the high-frequency output device is in full coverage with the user's skin, thereby avoiding the problem of energy spillage caused by incomplete coverage between the energy emitting end and the user's skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the module of the contact detection component of the present utility model;

[0033] Figure 2 This is a schematic diagram of a module of an embodiment of a contact detection assembly of the present utility model;

[0034] Figure 3 This is a schematic diagram of a module of an embodiment of a contact detection assembly of the present utility model;

[0035] Figure 4 This is a schematic diagram of a module of an embodiment of a contact detection assembly of the present utility model;

[0036] Figure 5This is a circuit diagram of an embodiment of a contact detection assembly of the present invention;

[0037] Figure 6 This is a circuit diagram of an embodiment of a contact detection assembly of the present invention;

[0038] Figure 7 This is a circuit diagram of an embodiment of a contact detection assembly of the present invention;

[0039] Figure 8 This is a circuit diagram of an embodiment of a contact detection component of the present invention.

[0040] Description of Figure Numbers:

[0041] 10. Skin contact detection circuit; 11. Main control circuit; 12. Skin detection circuit; 20. Adapter insertion detection circuit; 21. First insertion detection circuit; 22. Second insertion detection circuit; R1-R12, first resistor - twelfth resistor; C1-C4, first capacitor - fourth capacitor.

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0046] refer to Figure 1 The present invention proposes a contact detection component, which is applied to a high-frequency output device, wherein the high-frequency output device includes a treatment head, and the contact detection component includes:

[0047] A plurality of detection areas, each of which is provided at the energy emitting end of the treatment head and at the edge of the energy emitting end;

[0048] A skin contact detection circuit 10 includes a main control circuit 11 and a skin detection circuit 12. The skin detection circuit 12 has multiple detection terminals, each of which is electrically connected to the multiple detection areas in a one-to-one correspondence. The main control circuit 10 is electrically connected to the skin detection circuit 12.

[0049] Among them, the skin detection circuit 12 is used to output a corresponding detection result signal based on the electrical signal parameters of the detection area; the main control circuit 11 is used to determine the contact state between the energy emitting end and the user's skin based on multiple detection result signals; the multiple detection ends of the skin contact detection circuit 10 include multiple detection ends of the skin detection circuit 12.

[0050] It is understandable that high-frequency output devices include but are not limited to laser devices, radio frequency devices, ultrasonic devices, etc. The shape of the energy emitting end on the treatment head of the high-frequency output device will be set or selected according to the actual situation, such as circular, polygonal, etc., and the edges of the energy emitting end are not in the same horizontal plane. Therefore, when the high-frequency output device needs to directly fit the surface of human skin for treatment, the shape of the energy emitting end on the treatment head of the high-frequency output device may not fit the surface of human skin properly, resulting in energy overflow, which may cause harm to the human body. For example, when the high-frequency output device is a phototherapy device, the energy emitting end of the phototherapy device is the light outlet. When the shape of the light outlet of the phototherapy device does not fit the surface of human skin properly, it will cause energy light to overflow from the gap, which may cause harm to the human body.

[0051] In this embodiment, in order to ensure that the high-frequency output device can accurately detect the degree of contact between the energy emitting end on the treatment head and the human skin, multiple detection areas are provided on the energy emitting end on the treatment head of the high-frequency output device, and each detection area is electrically connected to the corresponding detection end.

[0052] It is understandable that incomplete contact between the energy emitting end of a high-frequency output device and the user's skin typically manifests as incomplete contact at the edges. Therefore, in this embodiment, multiple detection zones are provided at the edge of the energy emitting end of the high-frequency output device. The multiple detection zones can be configured based on the shape of the energy emitting end, and the shape of the detection zones themselves can also be configured as needed. For example, if the energy emitting end is circular and its edges are in the same plane, multiple detection zones can be equally spaced on the inner touchpad of the energy emitting end. To further improve detection accuracy, a detection zone can also be provided in an intermediate area, such as the center of a circle.

[0053] In this embodiment, the skin contact detection circuit 10 can be implemented using a resistance detection circuit, a capacitance detection circuit, a pressure detection circuit, or the like in conjunction with a control circuit such as an MCU. The resistance detection circuit detects contact by measuring the change in resistance between human skin and a high-frequency output device. When a person touches a specific conductive area, a resistance path is formed between the person and the area. Whether the detection area is in contact with the human skin can be determined by comparing the resistance values when there is contact. The capacitance detection circuit, on the other hand, uses a capacitance sensor to detect contact. When human skin approaches or contacts the sensor, the capacitance changes. It is understood that multiple detection areas correspond to multiple detection circuits, and the electrical signal parameters output by the multiple detection areas can be obtained. As can be seen from the above, the electrical signal parameters output by the multiple detection areas can be resistance change parameters, capacitance change parameters, or the like. Furthermore, when a capacitance detection circuit is used, the capacitance detection circuit typically has an initial state in which no object approaches or contacts the capacitance sensor. At this point, the capacitance value in the capacitance sensor is a fixed value, serving as a reference capacitance. The capacitance sensor also includes a touchpad, which is composed of a conductor (such as metal) and covered with a layer of insulating material. When a person touches or approaches the touchpad, a capacitor is formed between them, as the human body is also a conductor. Furthermore, the capacitance detection circuit typically includes an oscillator that generates a fixed-frequency signal. This signal is transmitted via the touchpad. When a person touches the touchpad, the capacitance between the body and the touchpad changes, which in turn affects the frequency or phase of the oscillator. A capacitance change threshold can be set based on the height difference between the edge of the energy-emitting end of the high-frequency output device's treatment head and the touchpad. When the capacitance change exceeds the capacitance change threshold, it can be determined that the detection area is in contact with the user's skin.

[0054] It is understandable that by setting multiple detection terminals in the skin contact detection circuit 10 to correspond to multiple detection areas, the contact status of multiple detection areas with the user's skin can be obtained. When the electrical signal parameters output by multiple detection terminals in the skin contact detection circuit 10 all reach the change threshold, it can be determined that the energy emitting terminal on the high-frequency output device treatment head is in a completely fitted state with the user's skin. When the electrical signal parameters output by any one of the multiple detection terminals in the skin contact detection circuit 10 do not reach the change threshold, it is determined that there is an area where the energy emitting terminal on the high-frequency output device treatment head is not fitted with the user's skin, that is, there may be a problem of energy overflow in this area. In addition, the setting of the number of detection areas will also affect the judgment of the contact status between the energy emitting terminal and the user's skin. To a certain extent, the more detection areas there are, the more accurate the detection effect.

[0055] Furthermore, an LED prompt circuit can be provided on the edge of the housing corresponding to the energy emitting end of the high-frequency output device's treatment head. By determining where there is a non-adhesive area between the energy emitting end of the high-frequency output device's treatment head and the user's skin, the LED prompt circuit can be controlled to output a prompt signal in the corresponding direction. The user can use the prompt signal to determine the direction of the non-adhesive area, thereby effectively adjusting the angle of contact between the energy emitting end of the high-frequency output device's treatment head and the user's skin, thereby achieving full skin coverage of the high-frequency output device.

[0056] In this embodiment, the energy emitting end of the high-frequency output device's treatment head is divided into multiple detection zones, and detection ends are provided in correspondence with each of these zones. Multiple electrical signal parameters are acquired by the multiple detection ends, and judgment is made as to whether the multiple electrical signal parameters meet a judgment criterion, thereby determining the contact status between each zone of the energy emitting end and the user's skin. When the detection zones corresponding to the multiple electrical signal parameters are all confirmed to be in contact with the user's skin, it can be determined that the energy emitting end of the high-frequency output device's treatment head is fully covered by the user's skin, thereby avoiding the problem of energy spillage caused by incomplete coverage between the energy emitting end and the user's skin.

[0057] Optionally, refer to Figure 2 、 Figure 5 and Figure 6 , the skin contact detection circuit 10 includes a main control circuit 11 and a skin detection circuit 12;

[0058] The skin detection circuit 12 has a plurality of detection terminals, and the plurality of detection terminals of the skin detection circuit 12 are electrically connected to the plurality of detection areas in a one-to-one correspondence;

[0059] The main control circuit 11 is electrically connected to the skin detection circuit 12;

[0060] Among them, the skin detection circuit 12 is used to output a corresponding detection result signal based on the electrical signal parameters of the detection area; the main control circuit 11 is used to determine the contact state between the energy emitting end and the user's skin based on multiple detection result signals; the multiple detection ends of the skin contact detection circuit 10 include multiple detection ends of the skin detection circuit 12.

[0061] In this embodiment, the main control circuit 11 can be implemented using a main controller, such as a DSP (Digital Signal Processing, digital signal processing chip), FPGA (Field Programmable Gate Array, programmable logic gate array chip), MCU (Microcontroller Unit, micro control unit), SOC (System on Chip, system on chip), etc. The main control circuit 11 is connected to the skin detection circuit 12 by communication, thereby obtaining the contact status between the energy transmitting end and the user's skin, and outputs a corresponding control signal to the light output circuit according to the contact status to control whether the high-frequency output device outputs energy. Further, the main control circuit 11 includes a main control chip, a first resistor R1, and a second resistor R2; wherein the main control chip has a clock pin and a data pin respectively electrically connected to the skin detection circuit 12; the first end of the first resistor R1 and the first end of the second resistor R2 are respectively electrically connected to the first power supply terminal, the second end of the first resistor R1 is electrically connected to the data pin; and the second end of the second resistor R2 is electrically connected to the clock pin. Among them, the first resistor R1 and the second resistor R2 are pull-up resistors, which are used to connect unused or uncertain input pins to the power supply to ensure that these pins are always in a known state. When an input pin does not have a clear driver, it can be at a high level (logic 1) or a low level (logic 0). Without a pull-up resistor, the pin may be in an unknown state, which may lead to unpredictable behavior. By adding a pull-up resistor, it can be ensured that the pin remains in a known state even in the absence of an external driver, which helps prevent accidental triggering or interference and improves the stability of the circuit.

[0062] In this embodiment, the skin detection circuit 12 can be implemented using a resistance detection circuit, a capacitance detection circuit, a pressure detection circuit, or the like. Multiple detection terminals are arranged in a one-to-one correspondence with multiple detection zones, thereby obtaining electrical signal parameters from the multiple detection zones. Based on the electrical signal parameters, a detection result signal is output to the main control circuit 11, which then determines the contact status between the energy transmitting terminal on the high-frequency output device's treatment head and the user's skin based on the detection result signal. Specifically, the skin detection circuit includes a skin detection chip, multiple detection resistors, multiple impedance matching resistors, and multiple detection terminals. The skin detection chip includes multiple detection pins and multiple communication pins. Each detection pin is electrically connected to a corresponding detection terminal via a detection resistor, and each communication pin is electrically connected to a corresponding main control circuit via an impedance matching resistor. Taking the case where the number of detection areas is 3 as an example, the skin detection circuit 12 includes a skin detection chip, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first detection end, a second detection end, and a third detection end; wherein, the first end of the third resistor R3 is electrically connected to the first detection end; the first end of the fourth resistor R4 is electrically connected to the second detection end; the first end of the fifth resistor R5 is electrically connected to the third detection end; the second end of the third resistor R3, the second end of the fourth resistor R4, and the second end of the fifth resistor R5 are respectively electrically connected to the KEY1 pin, KEY2 pin, and KEY3 pin of the skin detection chip; the first end of the sixth resistor R6 is electrically connected to the clock pin of the skin detection chip, and the second end of the sixth resistor R6 is electrically connected to the main control circuit 11; the first end of the seventh resistor R7 is electrically connected to the data pin of the skin detection chip, and the second end of the seventh resistor R7 is electrically connected to the main control circuit 11. It is understood that the third resistor R3, the fourth resistor R4, and the fifth resistor R5 constitute the detection circuit; the sixth resistor R6 and the seventh resistor R7 constitute impedance matching resistors; the KEY1 pin, the KEY2 pin, and the KEY3 pin constitute detection pins; and the data pin and the clock pin constitute communication pins. The skin detection chip is used to detect whether the detection area, which is electrically connected to the multiple detection terminals in a one-to-one correspondence, is in contact with the user's skin, and to output the detection result signal to the main control circuit 11. It is understood that the clock pin and the data pin of the skin detection chip are electrically connected to the clock pin and the data pin of the main control chip. The third resistor R3, the fourth resistor R4, and the fifth resistor R5 constitute detection channel resistors, which are used to enhance the detection terminal's ability to resist high-frequency interference. The ends of the sixth resistor R6 are electrically connected to the clock pins of the skin detection chip and the main control chip, respectively; the ends of the seventh resistor R7 are electrically connected to the data pins of the skin detection chip and the main control chip, respectively. The sixth resistor R6 and the seventh resistor R7 constitute matching resistors, used to provide impedance matching between the skin detection chip and the main control chip.

[0063] In this embodiment, the skin contact detection circuit 10 obtains electrical signal parameters from multiple detection terminals and outputs corresponding detection result signals. The main control circuit 11 determines the contact state between the multiple detection zones of the energy transmitter and the user's skin based on the multiple detection result signals, thereby determining whether to control energy output.

[0064] Furthermore, the skin contact detection circuit 10 further includes a filter circuit, and the filter circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor, a second inductor, a first power supply terminal, and a second power supply terminal;

[0065] The first end of the first capacitor C1 is electrically connected to the VDD pin of the skin detection chip, the second power supply terminal, the first end of the second capacitor C2, and the first end of the first inductor. The second end of the first capacitor C1 is electrically connected to the VSS pin of the skin detection chip, the second end of the second capacitor C2, the first end of the second inductor, and the ground terminal. The second end of the first inductor is electrically connected to the first end of the third capacitor C3 and the first power supply terminal, and the second end of the second inductor is electrically connected to the second end of the third capacitor C3 and the ground terminal. The filter circuit is used to filter out high-frequency interference from the voltage input by the second power supply and output it to the first power supply terminal.

[0066] In one embodiment of the present invention, the skin contact detection circuit 10 includes a skin detection chip.

[0067] In this embodiment, the skin detection chip has an independent control function. By obtaining the electrical signal parameters input by multiple detection terminals, it determines whether the corresponding detection area is in contact with the user's skin, and then obtains the detection results, and executes the corresponding control functions based on the detection results, such as turning on the output of energy.

[0068] In an embodiment of the present invention, the skin contact detection circuit 10 further includes a sensitivity setting terminal for receiving a sensitivity setting signal.

[0069] In this embodiment, in order to improve the flexibility of the skin contact detection circuit 10 and enable it to meet different usage scenarios, the skin contact detection circuit 10 also has a sensitivity setting terminal for receiving a sensitivity setting signal. The sensitivity setting signal can be output by the main control circuit 11 or by other circuits, so that the skin contact detection circuit 10 switches the sensitivity parameter when receiving the sensitivity setting signal. It can be understood that the sensitivity parameter in the skin detection circuit 12 corresponds to the power supply mode. For example, when powered by a battery, the skin detection circuit 12 switches the sensitivity parameter to the first parameter according to the sensitivity setting signal, that is, reduces the sensitivity of the skin detection circuit; when powered by an adapter, the skin detection circuit 12 switches the sensitivity parameter to the second parameter according to the sensitivity setting signal, that is, increases the sensitivity of the skin detection circuit. The skin contact detection circuit 10 effectively improves the accuracy of detection by obtaining the sensitivity setting signal and switching the sensitivity parameter.

[0070] In an embodiment of the present invention, the skin contact detection circuit 10 further includes a plurality of sensitivity setting circuits, and the plurality of sensitivity setting circuits are electrically connected to the plurality of detection areas in a one-to-one correspondence.

[0071] In this embodiment, the sensitivity setting circuit can be implemented using a resistance detection circuit, a capacitance detection circuit, or the like. By adjusting the resistance value of the resistance detection circuit and the capacitance value of the capacitance detection circuit, the sensitivity of the skin contact detection circuit 10 can be changed. For example, increasing the resistance value can make the resistance detection circuit more sensitive to smaller changes in resistance, while decreasing the resistance value can reduce the sensitivity of the resistance detection circuit. Increasing the capacitance can make the capacitance detection circuit more sensitive to smaller changes in capacitance, while decreasing the capacitance may reduce the sensitivity of the capacitance detection circuit. Taking the capacitance detection circuit as an example, the sensitivity setting circuit includes a capacitor, a first end of the capacitor being connected to the detection area, and a second end of the capacitor being grounded. It will be understood that the skin contact detection circuit 10 contains multiple detection terminals, each of which is electrically connected to a plurality of detection areas in a one-to-one correspondence. To ensure uniformity in the contact state between the detection energy transmitter and the user's skin, the sensitivity setting circuits corresponding to each detection area need to be adjusted synchronously to ensure consistent sensitivity across all areas.

[0072] refer to Figure 3 , in one embodiment of the present utility model, the contact detection component includes an adapter insertion detection circuit 20 for detecting the insertion status of the adapter and outputting a corresponding insertion detection signal;

[0073] The skin contact detection circuit 10 is used to determine the contact state between the energy output end and the user's skin based on the electrical signal parameters of the plurality of detection areas and the insertion detection signal.

[0074] It should be understood that under different power supply modes (such as battery power and adapter power), the operating voltage and current stability of the circuit may be different, which directly affects the performance of the skin contact detection circuit 10. Traditional designs may not have sufficient compensation mechanisms to adapt to these changes, resulting in the sensitivity being too low due to the slightly lower voltage when powered by the battery, and being unable to accurately detect skin contact; while when powered by the adapter, the higher voltage may lead to excessive sensitivity, and even small interference will be misjudged as a valid touch, causing malfunction. In high-frequency output devices, the main power supply methods are battery power and adapter power. Among them, battery power is more important in the power supply methods of high-frequency output devices. Therefore, it is necessary to set an adapter insertion detection circuit 20 in the contact detection component, and the adapter insertion detection circuit 20 detects the insertion status of the adapter and outputs a corresponding insertion detection signal. When the insertion detection signal indicates that the adapter is inserted, the sensitivity of the skin contact detection circuit 10 can be changed, that is, the sensitivity of the skin contact detection circuit 10 can be increased; when the insertion detection signal indicates that the adapter is not inserted, the sensitivity of the skin contact detection circuit 10 can be reduced to offset the differences in operating voltage and current under different power supply modes, thereby improving the accuracy of the skin contact detection circuit 10 in detecting the contact status between the energy transmitting end and the user's skin.

[0075] refer to Figure 3 In one embodiment of the present invention, the adapter insertion detection circuit 20 is electrically connected to the sensitivity setting end, and the skin contact detection circuit 10 is further used to receive the insertion detection signal and switch the sensitivity parameter.

[0076] In this embodiment, the skin contact detection circuit 10 is configured with two sets of sensitivity parameters, one corresponding to a different power supply mode for the high-frequency output device. As can be seen from the above, different power supply modes will affect the detection accuracy of the skin contact detection circuit 10. The high-frequency output device is plugged in via an adapter to achieve external power supply, and detection can be achieved via the adapter insertion detection circuit 20. When the insertion detection signal output by the adapter insertion detection circuit 20 indicates that the adapter is plugged in, i.e., external power supply, the skin contact detection circuit 10 switches the sensitivity parameters to increase the sensitivity of the skin contact detection circuit 10. When the insertion detection signal output by the adapter insertion detection circuit 20 indicates that the adapter is not plugged in, i.e., battery power, the skin contact detection circuit 10 switches the sensitivity parameters to decrease the sensitivity of the skin contact detection circuit 10. By obtaining the insertion detection signal via the sensitivity setting terminal, the skin contact detection circuit 10 can quickly determine the current power supply mode of the high-frequency output device and then implement the corresponding sensitivity parameters, effectively improving the accuracy of contact state detection.

[0077] refer to Figure 4In one embodiment of the present invention, when the skin contact detection circuit 10 includes a main control circuit 11 and a skin detection circuit 12, the adapter insertion detection circuit 20 is electrically connected to the main control circuit 11 and / or the skin detection circuit 12.

[0078] In this embodiment, the skin detection circuit 12 has different built-in sensitivity parameters, and upon receiving an insertion detection signal, the sensitivity parameters are switched. When the skin contact detection circuit 10 includes a main control circuit 11 and a skin detection circuit 12, the insertion detection signal can be output by the adapter insertion detection circuit 20 to the main control circuit 11, so that the main control circuit 11 outputs it to the skin detection circuit 12; it can also be output directly by the adapter insertion detection circuit 20 to the skin detection circuit 12; or it can be output by the adapter insertion detection circuit 20 to both the main control circuit 11 and the skin detection circuit 12. The main control circuit 11 and / or the skin detection circuit 12 confirm the insertion of the adapter by obtaining the insertion detection signal, thereby switching the sensitivity parameters of the skin detection circuit 12, thereby preventing the sensitivity of the skin detection circuit 12 from being reduced in accuracy due to the switching of the power supply mode. It can be understood that compared with the above-mentioned sensitivity setting circuit, this sensitivity parameter switching method has a higher degree of flexibility.

[0079] refer to Figure 4 、 Figure 7 and Figure 8 In one embodiment of the present invention, the adapter insertion detection circuit 20 is electrically connected to the main control circuit 11 and the skin detection circuit 12, respectively, and the adapter insertion detection circuit 20 includes:

[0080] a first insertion detection circuit 21, wherein an output end of the first insertion detection circuit 21 is electrically connected to the main control circuit 11, and is configured to detect the insertion status of the adapter and output a first insertion detection signal to the main control circuit 11;

[0081] a second insertion detection circuit 22, wherein an output end of the second insertion detection circuit 22 is electrically connected to the skin detection circuit 12, and is configured to detect the insertion status of the adapter and output a second insertion detection signal to the skin detection circuit 12;

[0082] The insertion detection signal includes a first insertion detection signal and a second insertion detection signal.

[0083] In this embodiment, the adapter insertion detection circuit 20 simultaneously outputs an insertion detection signal to the main control circuit 11 and the skin detection circuit 12. Due to the differences between the main control circuit 11 and the skin detection circuit 12, the corresponding adapter insertion detection circuits 20 are different. The adapter insertion detection circuit 20 corresponding to the main control circuit 11 is a first insertion detection circuit 21, which receives the first insertion detection signal; the adapter insertion detection circuit 20 corresponding to the skin detection circuit 12 is a second insertion detection circuit 22, which receives the second insertion detection signal. Furthermore, both the main control chip in the main control circuit 11 and the skin detection chip in the skin detection circuit 12 are equipped with pins for receiving the insertion detection signal.

[0084] Specifically, the first insertion detection circuit 21 includes an eighth resistor R8, a ninth resistor R9, a fourth capacitor C4, a voltage-stabilizing diode, and an adapter insertion port. The first end of the eighth resistor R8 is electrically connected to the adapter insertion port, and the second end of the eighth resistor R8 is electrically connected to the first end of the ninth resistor R9, the first end of the fourth capacitor C4, the cathode of the voltage-stabilizing diode, and the main control circuit 11. The second end of the ninth resistor R9 is electrically connected to the second end of the fourth capacitor C4, the anode of the voltage-stabilizing diode, and the ground terminal. The eighth resistor R8 and the ninth resistor R9 are voltage-dividing resistors. After the adapter voltage is divided to an appropriate voltage by the eighth resistor R8 and the ninth resistor R9, a first insertion detection signal is output to the main control chip in the main control circuit 11. The fourth capacitor C4 is a filter capacitor used to filter out high-frequency glitches and prevent false detection. The voltage-stabilizing diode is used to protect the pin of the main control chip connected to the first insertion detection circuit 21. The second insertion detection circuit 22 includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a switch, and an adapter insertion port. The first end of the tenth resistor R10 is electrically connected to the adapter insertion port, the second end of the tenth resistor R10 is electrically connected to the first end of the eleventh resistor R11 and the controlled end of the switch. The second end of the eleventh resistor R11 is electrically connected to the second end of the switch and to ground. The first end of the twelfth resistor R12 is electrically connected to the first power supply, and the second end of the twelfth resistor R12 is electrically connected to the first end of the switch and to the skin detection circuit 12. The tenth resistor R10 and the eleventh resistor R11 are voltage divider resistors used to set appropriate drive current and drive voltage. The switch is a transistor that is configured to conduct to the ground terminal when receiving a drive voltage. The twelfth resistor R12 is a pull-up resistor. When the adapter is not inserted (i.e., the voltage at the adapter insertion port is 0V), the second insertion detection signal is set to a high level by default. When the adapter is inserted, the switch is connected to ground, and the second insertion detection signal is set to a low level. By using the first insertion circuit and the second insertion detection circuit 22 respectively, the main control circuit 11 and the skin detection circuit 12 can obtain the insertion detection signal, thereby determining whether the adapter is inserted and whether the sensitivity parameter needs to be adjusted.

[0085] The present invention also provides a high-frequency output device, comprising a treatment head and any of the contact detection assemblies described above. It is worth noting that, because the present invention's high-frequency output device is based on the aforementioned contact detection assembly, the embodiments of the present invention's high-frequency output device include all technical solutions of all the aforementioned embodiments of the contact detection assembly, and the technical effects achieved are identical, so these details are omitted here.

[0086] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A contact detection component, applied to a high-frequency output device, characterized in that: The high-frequency output device includes a treatment head, and the contact detection component includes: A plurality of detection areas, each of which is provided at the energy emitting end of the treatment head and at the edge of the energy emitting end; a skin contact detection circuit, the skin contact detection circuit comprising a main control circuit and a skin detection circuit; the skin detection circuit having a plurality of detection terminals, the plurality of detection terminals of the skin detection circuit being electrically connected to the plurality of detection areas in a one-to-one correspondence; the main control circuit being electrically connected to the skin detection circuit; In which, the skin detection circuit is used to output a corresponding detection result signal based on the electrical signal parameters of the detection area; the main control circuit is used to determine the contact state between the energy emitting end and the user's skin based on multiple detection result signals; the multiple detection ends of the skin contact detection circuit include the multiple detection ends of the skin detection circuit.

2. The contact detection component according to claim 1, wherein: The main control circuit includes a main control chip, a first resistor, and a second resistor; In which, the main control chip has a clock pin and a data pin respectively electrically connected to the skin detection circuit; the first end of the first resistor and the first end of the second resistor are respectively electrically connected to the first power supply end, and the second end of the first resistor is electrically connected to the data pin; the second end of the second resistor is electrically connected to the clock pin.

3. The contact detection component according to claim 1, wherein: The skin detection circuit includes a skin detection chip, multiple detection resistors, multiple impedance matching resistors, and multiple detection terminals; Wherein, the skin detection chip includes multiple detection pins and multiple communication pins; each of the detection pins is electrically connected to a corresponding detection end via a detection resistor; each of the communication pins is electrically connected to a corresponding main control circuit via an impedance matching resistor.

4. The contact detection assembly according to any one of claims 1 to 3, characterized in that: The skin contact detection circuit further comprises a sensitivity setting terminal for receiving a sensitivity setting signal.

5. The contact detection assembly according to any one of claims 1 to 3, characterized in that: The skin contact detection circuit further includes a plurality of sensitivity setting circuits, and the plurality of sensitivity setting circuits are electrically connected to the plurality of detection areas in a one-to-one correspondence.

6. The contact detection assembly according to claim 5, wherein: The sensitivity setting circuit includes a capacitor, a first end of the capacitor is connected to the detection area, and a second end of the capacitor is grounded.

7. The contact detection assembly according to claim 4, wherein: The contact detection component includes an adapter insertion detection circuit for detecting the insertion status of the adapter and outputting a corresponding insertion detection signal; The skin contact detection circuit is used to determine the contact state between the energy transmitting end and the user's skin based on the electrical signal parameters of the plurality of detection areas and the insertion detection signal.

8. The contact detection assembly according to claim 7, wherein: The adapter insertion detection circuit is electrically connected to the sensitivity setting terminal, and the skin contact detection circuit is further used to receive the insertion detection signal and switch the sensitivity parameter.

9. The contact detection assembly according to claim 7, wherein: When the skin contact detection circuit includes a main control circuit and a skin detection circuit, the adapter insertion detection circuit is electrically connected to the main control circuit and / or the skin detection circuit.

10. The contact detection assembly according to claim 9, wherein: The adapter insertion detection circuit is electrically connected to the main control circuit and the skin detection circuit respectively, and the adapter insertion detection circuit includes: a first insertion detection circuit, wherein an output end of the first insertion detection circuit is electrically connected to the main control circuit, and is configured to detect an insertion state of the adapter and output a first insertion detection signal to the main control circuit; a second insertion detection circuit, wherein an output end of the second insertion detection circuit is electrically connected to the skin detection circuit, and is configured to detect an insertion state of the adapter and output a second insertion detection signal to the skin detection circuit; The insertion detection signal includes a first insertion detection signal and a second insertion detection signal.

11. The contact detection assembly according to claim 10, wherein: The first insertion detection circuit includes an eighth resistor, a ninth resistor, a fourth capacitor, a voltage stabilizing diode, and an adapter insertion terminal; Among them, the first end of the eighth resistor is electrically connected to the adapter insertion end, the second end of the eighth resistor is electrically connected to the first end of the ninth resistor, the first end of the fourth capacitor, the cathode of the voltage regulator diode, and the main control circuit; the second end of the ninth resistor is electrically connected to the second end of the fourth capacitor, the anode of the voltage regulator diode, and the ground end.

12. The contact detection assembly according to claim 10, wherein: The second insertion detection circuit includes a tenth resistor, an eleventh resistor, a twelfth resistor, a switch tube, and an adapter insertion end; Among them, the first end of the tenth resistor is electrically connected to the adapter insertion end, the second end of the tenth resistor is electrically connected to the first end of the eleventh resistor and the controlled end of the switching tube; the second end of the eleventh resistor is electrically connected to the second end of the switching tube and the ground end; the first end of the twelfth resistor is electrically connected to the first power supply end, and the second end of the twelfth resistor is electrically connected to the first end of the switching tube and the skin detection circuit.

13. The contact detection assembly according to claim 3, wherein: The skin contact detection circuit further includes a filter circuit, and the filter circuit includes a first capacitor, a second capacitor, a third capacitor, a first inductor, a second inductor, a first power supply terminal, and a second power supply terminal; The first end of the first capacitor is electrically connected to the VDD pin of the skin detection chip, the second power supply terminal, the first end of the second capacitor, and the first end of the first inductor; the second end of the first capacitor is electrically connected to the VSS pin of the skin detection chip, the second end of the second capacitor, the first end of the second inductor, and the ground terminal; the second end of the first inductor is electrically connected to the first end of the third capacitor and the first power supply terminal, and the second end of the second inductor is electrically connected to the second end of the third capacitor and the ground terminal.

14. A high-frequency output device, characterized in that: The high-frequency output device comprises a treatment head and a contact detection component according to any one of claims 1 to 13.

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