Leakage current control method, circuit and equipment applied to ultrasonic periodontal cleaning equipment

Abstract

The invention discloses a leakage current control method, circuit and equipment applied to ultrasonic periodontal cleaning equipment, which can be used for respectively matching corresponding leakage current transfer modes according to the grounding state condition of the ultrasonic periodontal cleaning equipment, and determining the grounding state of the ultrasonic periodontal cleaning equipment through a grounding state determination circuit. A targeted leakage current transfer management and control function is realized through the first leakage current transfer circuit and the second leakage current transfer circuit, so that the leakage current transfer function of the ultrasonic periodontal cleaning equipment is realized, and the leakage current transfer management and control accuracy and pertinence of the ultrasonic periodontal cleaning equipment are improved; and the leakage current transfer management and control efficiency, timeliness and convenience of the ultrasonic periodontal cleaning equipment are improved, so that the leakage current flowing through the human body is reduced, the electrostatic risk of a patient is reduced, and the tooth cleaning experience and the tooth cleaning comfort of a user are optimized.

Description

Technical Field

[0001] This invention relates to the field of leakage current control technology, and in particular to a leakage current control method, circuit and device for use in ultrasonic periodontal cleaning equipment. Background Technology

[0002] With increasing awareness of oral health, ultrasonic periodontal cleaning devices, as efficient and safe oral cleaning tools, have been widely adopted in clinical applications. However, most ultrasonic handpieces on the market exhibit leakage current during operation, and this leakage current is often significant. This leakage current is mostly released from the working tip of the ultrasonic handpiece during the cleaning process, flows through the patient's tooth crown, and discharges to the ground, making patients prone to experiencing an electric shock. This negatively impacts the patient's cleaning experience and reduces comfort. Therefore, providing a leakage current control method that improves user comfort during teeth cleaning is particularly important. Summary of the Invention

[0003] This invention provides a method, circuit, and device for controlling leakage current in ultrasonic periodontal cleaning equipment. It can improve the accuracy and reliability of leakage current control in ultrasonic periodontal cleaning equipment, as well as improve the efficiency and convenience of leakage current control, thereby reducing leakage current flowing through the human body, reducing the risk of static electricity to patients, and improving the user's teeth cleaning experience.

[0004] To address the aforementioned technical problems, the first aspect of this invention discloses a leakage current control method for an ultrasonic periodontal cleaning device. The method is applied to a leakage current control circuit, which includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit. A first terminal of the grounding state determination circuit is electrically connected to a first terminal of the first leakage current transfer circuit; a second terminal of the grounding state determination circuit is electrically connected to a first terminal of the second leakage current transfer circuit; a third terminal of the grounding state determination circuit is used for grounding; and a fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning device. The method includes: The grounding state determination circuit determines the grounding signal for the ultrasonic periodontal cleaning device and determines whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal. When the judgment result is yes, the grounding state determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the first leakage current transfer circuit, and the first leakage current transfer circuit transmits the received leakage current signal to the ground. When the determination result is negative, the grounding state determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the second leakage current transfer circuit. The second leakage current transfer circuit transmits the received leakage current signal to other current-bearing objects, which do not include the patient's oral cavity and the ground.

[0005] As an optional implementation, in the first aspect of the present invention, the grounding state determination circuit includes a grounding signal determination module and a control module, wherein: The signal output terminal of the grounding signal determination module is electrically connected to the first terminal of the control module; the second terminal of the control module is electrically connected to the first terminal of the first leakage current transfer circuit; the third terminal of the control module is electrically connected to the first terminal of the second leakage current transfer circuit; the first signal acquisition terminal of the grounding signal determination module is used to electrically connect to the ultrasonic periodontal cleaning device; the second signal acquisition terminal of the grounding signal determination module is used for grounding. And, the grounding state determination circuit determines the grounding signal for the ultrasonic periodontal cleaning device, and determines whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal, including: The grounding signal determination module determines the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, and transmits the grounding application signal to the control module; The control module determines the grounding voltage data based on the grounding application signal; it determines whether the grounding voltage data meets the preset voltage conditions, which include voltage magnitude conditions and / or voltage stability conditions; when the determination result is yes, it determines that the ultrasonic periodontal cleaning device meets the preset grounding state conditions; when the determination result is no, it determines that the ultrasonic periodontal cleaning device does not meet the preset grounding state conditions. And, the grounding state determination circuit controls the leakage current signal of the ultrasonic periodontal cleaning device to be output to the first leakage current transfer circuit to achieve leakage current control function, including: The control module generates an enable signal and sends the enable signal to the first leakage current transfer circuit to trigger the first leakage current transfer circuit to perform corresponding operations and thereby realize the leakage current control function.

[0006] As an optional implementation, in the first aspect of the present invention, the grounding signal determination module includes a signal detection module and a signal amplification module, wherein: The first terminal of the signal detection module is electrically connected to the first terminal of the signal amplification module; the second terminal of the signal amplification module is electrically connected to the first terminal of the control module; the second terminal of the signal detection module is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the signal detection module is used for grounding. And, the grounding signal determination module determines the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, including: The signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal, and transmits the grounding measurement signal to the signal amplification module; The signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device.

[0007] As an optional implementation, in a first aspect of the invention, the first leakage current transfer circuit includes at least a short-circuit control module, wherein: The first terminal of the short-circuit control module is electrically connected to the second terminal of the control module; the functional ground terminal of the short-circuit control module is electrically connected to the device application part in the ultrasonic periodontal cleaning device; the third terminal of the short-circuit control module is used for grounding; when the short-circuit control module receives the enable signal, the functional ground terminal and the third terminal are connected. And, the first leakage current transfer circuit transmits the received leakage current signal to ground, including: The short-circuit control module performs a short-circuit trigger operation between the functional ground of the corresponding device application part and the ground based on the enable signal, so that the received leakage current signal flows directly away from the ground.

[0008] As an optional implementation, in the first aspect of the present invention, the signal detection module includes a first acquisition submodule and a second acquisition submodule, wherein: The first terminal of the first acquisition submodule and the first terminal of the second acquisition submodule are respectively electrically connected to the first terminal of the signal amplification module; the neutral terminal of the first acquisition submodule and the live terminal of the second acquisition submodule are respectively used to electrically connect to the ultrasonic periodontal cleaning device; the second terminal of the first acquisition submodule and the second terminal of the second acquisition submodule are respectively used for grounding. Furthermore, the signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal, and transmits the grounding measurement signal to the signal amplification module, including: The first acquisition submodule determines the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral wire to ground mode, and transmits the first grounding measurement sub-signal to the signal amplification module; The second acquisition submodule determines the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live wire to ground mode, and transmits the second grounding measurement sub-signal to the signal amplification module.

[0009] As an optional implementation, in a first aspect of the present invention, the signal amplification module includes a first amplification submodule matched with the first acquisition submodule and a second amplification submodule matched with the second acquisition submodule, wherein: The first terminal of the first acquisition submodule is electrically connected to the first terminal of the first amplification submodule, and the second terminal of the first amplification submodule is electrically connected to the control module. The first terminal of the second acquisition submodule is electrically connected to the first terminal of the second amplification submodule, and the second terminal of the second amplification submodule is electrically connected to the control module. Furthermore, the signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device, including: The first amplification submodule performs corresponding signal amplification processing operations on the first grounding measurement sub-signal to obtain the first grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device; The second amplification submodule performs corresponding signal amplification processing on the second grounding measurement sub-signal to obtain the second grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device.

[0010] As an optional implementation, in a first aspect of the present invention, the first acquisition submodule includes a first current-limiting resistor and a first optocoupler, wherein: The first terminal of the first current-limiting resistor is electrically connected to the first terminal of the first optocoupler; the second terminal of the first optocoupler is electrically connected to the first terminal of the first amplification submodule; the second terminal of the first current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the first current-limiting resistor is electrically connected to the third terminal of the first optocoupler; the fourth terminal of the first current-limiting resistor is used to ground. And, the first acquisition submodule determines the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral-to-ground method, including: When the ultrasonic periodontal cleaning device is in a good grounding state, the first current limiting resistor receives the first current signal input through the neutral wire. The first current limiting resistor performs a corresponding current processing operation on the first current signal and outputs it to the first conducting optocoupler. After the first conducting optocoupler detects the first current signal, it performs a corresponding optocoupler opening operation to obtain the first grounding measurement sub-signal.

[0011] As an optional implementation, in the first aspect of the present invention, the second acquisition submodule includes a second current-limiting resistor and a second optocoupler, wherein: The first terminal of the second current-limiting resistor is electrically connected to the first terminal of the second optocoupler; the second terminal of the second optocoupler is electrically connected to the first terminal of the second amplification submodule; the second terminal of the second current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the second current-limiting resistor is electrically connected to the third terminal of the second optocoupler; the fourth terminal of the second current-limiting resistor is used to ground. And, the second acquisition submodule determines the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live-to-ground mode, including: When the ultrasonic periodontal cleaning device is in a good grounding state, the second current limiting resistor receives the second current signal input through the live wire. The second current limiting resistor performs a corresponding current processing operation on the second current signal and outputs it to the second optocoupler. After detecting the second current signal, the second optocoupler performs a corresponding optocoupler opening operation to obtain the second grounding measurement sub-signal.

[0012] A second aspect of this invention discloses a leakage current control circuit for use in ultrasonic periodontal cleaning equipment. The leakage current control circuit includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit, wherein: The first terminal of the grounding state determination circuit is electrically connected to the first terminal of the first leakage current transfer circuit; the second terminal of the grounding state determination circuit is electrically connected to the first terminal of the second leakage current transfer circuit; the third terminal of the grounding state determination circuit is used for grounding; and the fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning device. The grounding state determination circuit is used to determine the grounding signal for the ultrasonic periodontal cleaning device, and to determine whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal. When the determination result is yes, the ultrasonic periodontal cleaning device is controlled to output the leakage current signal it generates to the first leakage current transfer circuit; when the determination result is no, the ultrasonic periodontal cleaning device is controlled to output the leakage current signal it generates to the second leakage current transfer circuit. The first leakage current transfer circuit is used to transmit the received leakage current signal to ground; The second leakage current transfer circuit is used to transmit the received leakage current signal to other current-bearing objects, which do not include the patient's oral cavity and the ground.

[0013] As an optional implementation, in a second aspect of the present invention, the grounding state determination circuit includes a grounding signal determination module and a control module, wherein: The signal output terminal of the grounding signal determination module is electrically connected to the first terminal of the control module; the second terminal of the control module is electrically connected to the first terminal of the first leakage current transfer circuit; the third terminal of the control module is electrically connected to the first terminal of the second leakage current transfer circuit; the first signal acquisition terminal of the grounding signal determination module is used to electrically connect to the ultrasonic periodontal cleaning device; the second signal acquisition terminal of the grounding signal determination module is used for grounding. The grounding signal determination module is used to determine the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, and transmit the grounding application signal to the control module. The control module is used to determine grounding voltage data based on the grounding application signal; determine whether the grounding voltage data meets preset voltage conditions, the voltage conditions including voltage magnitude conditions and / or voltage stability conditions; when the determination result is yes, determine that the ultrasonic periodontal cleaning device meets the preset grounding state conditions; when the determination result is no, determine that the ultrasonic periodontal cleaning device does not meet the preset grounding state conditions. The control module is further configured to generate an enable signal and send the enable signal to the first leakage current transfer circuit to trigger the first leakage current transfer circuit to perform corresponding operations and thereby realize the leakage current control function.

[0014] As an optional implementation, in a second aspect of the present invention, the grounding signal determination module includes a signal detection module and a signal amplification module, wherein: The first terminal of the signal detection module is electrically connected to the first terminal of the signal amplification module; the second terminal of the signal amplification module is electrically connected to the first terminal of the control module; the second terminal of the signal detection module is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the signal detection module is used for grounding. The signal detection module is used to perform a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal, and transmit the grounding measurement signal to the signal amplification module. The signal amplification module is used to perform corresponding signal amplification processing operations on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device.

[0015] As an optional implementation, in a second aspect of the invention, the first leakage current transfer circuit includes at least a short-circuit control module, wherein: The first terminal of the short-circuit control module is electrically connected to the second terminal of the control module; the functional ground terminal of the short-circuit control module is electrically connected to the device application part in the ultrasonic periodontal cleaning device; the third terminal of the short-circuit control module is used for grounding; when the short-circuit control module receives the enable signal, the functional ground terminal and the third terminal are connected. The short-circuit control module is used to perform a short-circuit trigger operation between the functional ground of the corresponding device application part and the ground based on the enable signal, so that the received leakage current signal flows directly away from the ground.

[0016] As an optional implementation, in a second aspect of the present invention, the signal detection module includes a first acquisition submodule and a second acquisition submodule, wherein: The first terminal of the first acquisition submodule and the first terminal of the second acquisition submodule are respectively electrically connected to the first terminal of the signal amplification module; the neutral terminal of the first acquisition submodule and the live terminal of the second acquisition submodule are respectively used to electrically connect to the ultrasonic periodontal cleaning device; the second terminal of the first acquisition submodule and the second terminal of the second acquisition submodule are respectively used for grounding. The first acquisition submodule is used to determine the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral wire to ground mode, and transmit the first grounding measurement sub-signal to the signal amplification module; The second acquisition submodule is used to determine the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live wire to ground mode, and transmit the second grounding measurement sub-signal to the signal amplification module.

[0017] As an optional implementation, in a second aspect of the invention, the signal amplification module includes a first amplification submodule matched with the first acquisition submodule and a second amplification submodule matched with the second acquisition submodule, wherein: The first terminal of the first acquisition submodule is electrically connected to the first terminal of the first amplification submodule, and the second terminal of the first amplification submodule is electrically connected to the control module. The first terminal of the second acquisition submodule is electrically connected to the first terminal of the second amplification submodule, and the second terminal of the second amplification submodule is electrically connected to the control module. The first amplification submodule is used to perform corresponding signal amplification processing operations on the first grounding measurement sub-signal to obtain the first grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device; The second amplification submodule is used to perform corresponding signal amplification processing operations on the second grounding measurement sub-signal to obtain the second grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device.

[0018] As an optional implementation, in a second aspect of the present invention, the first acquisition submodule includes a first current-limiting resistor and a first optocoupler, wherein: The first terminal of the first current-limiting resistor is electrically connected to the first terminal of the first optocoupler; the second terminal of the first optocoupler is electrically connected to the first terminal of the first amplification submodule; the second terminal of the first current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the first current-limiting resistor is electrically connected to the third terminal of the first optocoupler; the fourth terminal of the first current-limiting resistor is used to ground. The first current-limiting resistor is used to receive the first current signal input through the neutral wire when the ultrasonic periodontal cleaning device is in a good grounding state, perform corresponding current processing operations on the first current signal and output it to the first conducting optocoupler. The first conducting optocoupler is used to perform a corresponding optocoupler opening operation after detecting the first current signal, so as to obtain the first grounding measurement sub-signal.

[0019] As an optional implementation, in a second aspect of the present invention, the second acquisition submodule includes a second current-limiting resistor and a second optocoupler, wherein: The first terminal of the second current-limiting resistor is electrically connected to the first terminal of the second optocoupler; the second terminal of the second optocoupler is electrically connected to the first terminal of the second amplification submodule; the second terminal of the second current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the second current-limiting resistor is electrically connected to the third terminal of the second optocoupler; the fourth terminal of the second current-limiting resistor is used to ground. The second current-limiting resistor is used to receive the second current signal input through the live wire when the ultrasonic periodontal cleaning device is in a good grounding state, perform corresponding current processing operations on the second current signal and output it to the second conducting optocoupler; The second conducting optocoupler is used to perform a corresponding optocoupler opening operation after detecting the second current signal, so as to obtain the second grounding measurement sub-signal.

[0020] The third aspect of the present invention discloses a leakage current control device, the leakage current control device including a device body, and the leakage current control device further including the leakage current control circuit applied to the ultrasonic periodontal cleaning device as described in any of the second aspects.

[0021] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: This invention provides a leakage current control method, circuit, and device for ultrasonic periodontal cleaning equipment. The method is applied to a leakage current control circuit, which includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit. A first terminal of the grounding state determination circuit is electrically connected to a first terminal of the first leakage current transfer circuit; a second terminal of the grounding state determination circuit is electrically connected to a first terminal of the second leakage current transfer circuit; a third terminal of the grounding state determination circuit is used for grounding; and a fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning equipment. Furthermore, the grounding state determination circuit... The grounding signal for the ultrasonic periodontal cleaning device is determined, and the device is judged to meet the preset grounding conditions based on the grounding signal. When the judgment result is yes, the grounding condition determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the first leakage current transfer circuit, which then transmits the received leakage current signal to the ground. When the judgment result is no, the grounding condition determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the second leakage current transfer circuit, which then transmits the received leakage current signal to other current-bearing objects, excluding the patient's oral cavity and the ground. As can be seen, the present invention can match the corresponding leakage current transfer method according to the grounding status of the ultrasonic periodontal cleaning device. The grounding status of the ultrasonic periodontal cleaning device is determined by the grounding status determination circuit, and the first leakage current transfer circuit and the second leakage current transfer circuit realize the targeted leakage current transfer control function. This realizes the leakage current transfer function of the ultrasonic periodontal cleaning device, which is conducive to improving the accuracy and targeting of leakage current transfer control of the ultrasonic periodontal cleaning device, as well as improving the efficiency, timeliness and convenience of leakage current transfer control of the ultrasonic periodontal cleaning device. In turn, it helps to reduce the leakage current flowing through the human body, reduce the risk of static electricity to patients, and help optimize the user's teeth cleaning experience and comfort. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic flowchart of a leakage current control method for ultrasonic periodontal cleaning equipment disclosed in an embodiment of the present invention; Figure 2 This is a schematic diagram of the leakage current control circuit for ultrasonic periodontal cleaning equipment disclosed in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a first leakage current transfer circuit disclosed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a first amplification submodule and a second amplification submodule disclosed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a first acquisition submodule and a second acquisition submodule disclosed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a leakage current control device disclosed in an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] This invention discloses a leakage current control method, circuit, and device for ultrasonic periodontal cleaning equipment. It can match corresponding leakage current transfer methods based on the grounding status of the ultrasonic periodontal cleaning equipment. The grounding status of the ultrasonic periodontal cleaning equipment is determined by a grounding status determination circuit, and targeted leakage current transfer control functions are achieved through a first leakage current transfer circuit and a second leakage current transfer circuit. This improves the accuracy and targeting of leakage current transfer control in ultrasonic periodontal cleaning equipment, as well as its efficiency, timeliness, and convenience. Furthermore, it helps reduce leakage current flowing through the human body, lowers the risk of static electricity to patients, and helps optimize the user's teeth cleaning experience and comfort. Detailed descriptions follow.

[0028] Example 1 Please see Figure 1 , Figure 1 This is a flowchart illustrating a leakage current control method for ultrasonic periodontal cleaning equipment disclosed in an embodiment of the present invention. The method is applied to a leakage current control circuit, which includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit, wherein: The first terminal of the grounding state determination circuit is electrically connected to the first terminal of the first leakage current transfer circuit; the second terminal of the grounding state determination circuit is electrically connected to the first terminal of the second leakage current transfer circuit; the third terminal of the grounding state determination circuit is used for grounding; and the fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning device. like Figure 1 As shown, the method may include the following steps: 101. The grounding state determination circuit determines the grounding signal for the ultrasonic periodontal cleaning device and judges whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal. When the judgment result is yes, step 102 is executed; when the judgment result is no, step 103 is executed.

[0029] Optionally, a pair of optocouplers can be used to measure the voltage of the LN live and neutral wires to ground to confirm the grounding reliability. Furthermore, when the usage scenario does not have good grounding conditions (i.e., the grounding condition is not met, such as when the power strip is not grounded), leakage current can be transferred through steps 103 and 105. When the usage scenario has good grounding conditions, leakage current can be transferred through steps 102 and 104. This embodiment of the invention does not limit the scope of the invention.

[0030] 102. The grounding state determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the first leakage current transfer circuit.

[0031] 103. The grounding status determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the second leakage current transfer circuit.

[0032] 104. The first leakage current transfer circuit transmits the received leakage current signal to the ground.

[0033] Optionally, the first leakage current transfer circuit can be implemented by connecting the circuit board ground to the earth in a suitable way through a relay or other device. Specifically, the relay is activated to short-circuit the handle ground and the earth, and the leakage current flows directly to the earth, thereby reducing the leakage current flowing through the patient's oral cavity. This embodiment of the invention does not limit the scope of the invention.

[0034] 105. The second leakage current transfer circuit transmits the received leakage current signal to other current-bearing objects, which do not include the patient's oral cavity and the ground.

[0035] Optionally, the second leakage current transfer circuit can be implemented by leading a ground wire through an interface to form a wristband, which can be further connected to the doctor's hand or other parts of the patient's body except the mouth. Alternatively, it can be connected to a metal plate, so that most of the leakage current flows through the wristband or the metal plate, thereby reducing the leakage current flowing through the patient's mouth. This embodiment of the invention does not limit the specific implementation.

[0036] It is evident that implementation Figure 1 The described leakage current control method for ultrasonic periodontal cleaning equipment can match corresponding leakage current transfer methods according to the grounding status of the ultrasonic periodontal cleaning equipment. The grounding status of the ultrasonic periodontal cleaning equipment is determined by the grounding status determination circuit, and the first leakage current transfer circuit and the second leakage current transfer circuit realize the targeted leakage current transfer control function. This improves the accuracy and targeting of leakage current transfer control of ultrasonic periodontal cleaning equipment, as well as its efficiency, timeliness and convenience. In turn, it helps to reduce leakage current flowing through the human body, reduce the risk of static electricity to patients, and help optimize the user's teeth cleaning experience and comfort.

[0037] In an optional embodiment, the grounding state determination circuit includes a grounding signal determination module and a control module, wherein: The signal output terminal of the grounding signal determination module is electrically connected to the first terminal of the control module; the second terminal of the control module is electrically connected to the first terminal of the first leakage current transfer circuit; the third terminal of the control module is electrically connected to the first terminal of the second leakage current transfer circuit; the first signal acquisition terminal of the grounding signal determination module is used to electrically connect to the ultrasonic periodontal cleaning device; the second signal acquisition terminal of the grounding signal determination module is used for grounding. In addition, the grounding state determination circuit determines the grounding signal for the ultrasonic periodontal cleaning device and judges whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal, including: The grounding signal determination module determines the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, and transmits the grounding application signal to the control module; The control module determines the grounding voltage data based on the grounding application signal; it determines whether the grounding voltage data meets the preset voltage conditions, including voltage magnitude conditions and / or voltage stability conditions; when the determination result is yes, it determines that the ultrasonic periodontal cleaning device meets the preset grounding state conditions; when the determination result is no, it determines that the ultrasonic periodontal cleaning device does not meet the preset grounding state conditions. In addition, the grounding state determination circuit controls the output of the leakage current signal of the ultrasonic periodontal cleaning device to the first leakage current transfer circuit to achieve leakage current control function, including: The control module generates an enable signal and sends it to the first leakage current transfer circuit to trigger the first leakage current transfer circuit to perform corresponding operations and thus realize the leakage current control function.

[0038] Optionally, the grounding signal determination module determines the corresponding grounding application signal for the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal. For example, grounding is achieved through the live and neutral wires and a series resistor. When the grounding is good, current will flow through the optocoupler, and the corresponding port (e.g.) Figure 4 The AC_ADC1 and AC_ADC2 signals will be amplified to obtain the grounding application signal; further, the control module (such as a microcontroller) detects the value of this grounding application signal (e.g., ...). Figure 4 The values ​​of AC_ADC1OUT and AC_ADC2OUT in the data are used to determine the grounding status. If there is no grounding or the grounding status is not good, the optocoupler cannot be turned on and the control module cannot detect the grounding application signal. This embodiment of the invention does not limit the scope of the invention.

[0039] Optionally, the control module determines whether the grounding voltage data meets preset voltage conditions, including voltage magnitude conditions and / or voltage stability conditions, which may include: Determine the grounding voltage value based on the grounding voltage data; Determine whether the ground voltage value is greater than or equal to a preset ground voltage threshold, and / or determine whether the degree of change of the ground voltage value (such as change frequency, change amplitude, specific change value, etc.) is greater than or equal to a preset ground voltage change degree threshold; When it is determined that the ground voltage value is greater than or equal to the ground voltage threshold, and / or when it is determined that the degree of change of the ground voltage value is greater than or equal to the ground voltage change degree threshold, the ground voltage data is determined to meet the preset voltage condition; When it is determined that the ground voltage value is less than the ground voltage threshold, and / or when it is determined that the degree of change of the ground voltage value is less than the ground voltage change threshold, it is determined that the ground voltage data does not meet the preset voltage conditions.

[0040] Optionally, the control module generates an enable signal and sends it to the first leakage current transfer circuit to trigger the first leakage current transfer circuit to perform corresponding operations and thus realize the leakage current control function. For example, when the microcontroller (i.e., the control module) detects that the grounding status is good, it outputs an enable signal to make the relay (i.e., the first leakage current transfer circuit) engage, thereby short-circuiting the handle's functional ground and the earth. This embodiment of the invention is not limited.

[0041] As can be seen, this optional embodiment can determine the grounding application signal corresponding to the ultrasonic periodontal cleaning device through the grounding signal determination module, and obtain the grounding state condition judgment result by analyzing the grounding application signal through the control module. The grounding state condition judgment result is determined based on the determined voltage condition satisfaction. This is beneficial to improving the rationality of the grounding application signal determination method of the ultrasonic periodontal cleaning device, thereby improving the accuracy and reliability of the determined grounding application signal, as well as the comprehensiveness and rationality of the grounding state condition judgment method, which in turn improves the accuracy and reliability of the determined grounding state condition judgment result. This, in turn, helps to improve the accuracy, efficiency, and timeliness of subsequent leakage current transfer control.

[0042] In another optional embodiment, the ground signal determination module may include a signal detection module and a signal amplification module, wherein: The first terminal of the signal detection module is electrically connected to the first terminal of the signal amplification module; the second terminal of the signal amplification module is electrically connected to the first terminal of the control module; the second terminal of the signal detection module is used for electrical connection to the ultrasonic periodontal cleaning device; the third terminal of the signal detection module is used for grounding. Furthermore, the grounding signal determination module determines the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, which may include: The signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning equipment to obtain a grounding measurement signal, and then transmits the grounding measurement signal to the signal amplification module. The signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning equipment.

[0043] Optionally, the signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal. For example, the signal detection module is grounded through the live and neutral wires and a series resistor. When the grounding is good, current will flow through the optocoupler, and a signal will be generated at the corresponding port, thus obtaining a grounding measurement signal. This embodiment of the invention is not limited to this.

[0044] Optionally, the signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device. For example, the grounding measurement signal is amplified by the signal amplification module to obtain the grounding application signal. This embodiment of the invention is not limited to this.

[0045] As can be seen, this optional embodiment can acquire the grounding measurement signal of the ultrasonic periodontal cleaning device through the signal detection module and perform corresponding signal amplification processing on the grounding measurement signal through the signal amplification module to obtain the grounding application signal, thereby improving the signal strength and signal detectability of the determined grounding application signal, and thus improving the anti-interference ability and stability of the grounding application signal in the signal transmission and processing analysis process, thereby improving the accuracy of subsequent analysis of the grounding application signal and control of leakage current.

[0046] In yet another alternative embodiment, the first leakage current transfer circuit may include at least a short-circuit control module, wherein: The first terminal of the short-circuit control module is electrically connected to the second terminal of the control module; the functional ground terminal of the short-circuit control module is electrically connected to the application part of the ultrasonic periodontal cleaning device; the third terminal of the short-circuit control module is used for grounding; when the short-circuit control module receives an enable signal, the functional ground terminal and the third terminal are connected. Furthermore, the first leakage current transfer circuit transmits the received leakage current signal to ground, and may include: The short-circuit control module performs a short-circuit trigger operation between the functional ground and earth of the corresponding equipment application part based on the enable signal, so that the received leakage current signal flows directly away from the earth.

[0047] Optionally, the short-circuit control module performs a short-circuit trigger operation between the functional ground and earth of the corresponding device application part based on the enable signal. For example, when the enable signal is received, the relay is opened and engaged, thereby short-circuiting the functional ground and earth. This embodiment of the invention is not limited.

[0048] Optionally, the device application part can be functionally configured, for example, as a handle. However, this embodiment of the invention does not limit the functionality of the device application part.

[0049] As can be seen, this optional embodiment can achieve the function of direct leakage current signal flow to the ground by executing the short-circuit trigger operation between the functional ground of the corresponding equipment application part and the ground through the short-circuit control module. This is conducive to improving the rationality and feasibility of leakage current transfer control, and thus improving the control accuracy and efficiency of leakage current flow to the ground. It not only reduces the impact of leakage current on the user's teeth cleaning experience and eliminates static electricity hazards, but also reduces the electromagnetic interference of leakage current on ultrasonic periodontal cleaning equipment and stabilizes equipment operation.

[0050] In yet another optional embodiment, the signal detection module may include a first acquisition submodule and a second acquisition submodule, wherein: The first terminal of the first acquisition submodule and the first terminal of the second acquisition submodule are electrically connected to the first terminal of the signal amplification module, respectively; the neutral terminal of the first acquisition submodule and the live terminal of the second acquisition submodule are electrically connected to the ultrasonic periodontal cleaning device, respectively; the second terminal of the first acquisition submodule and the second terminal of the second acquisition submodule are grounded, respectively. Additionally, the signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal, and transmits the grounding measurement signal to the signal amplification module, which may include: The first acquisition submodule determines the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral wire to ground mode, and transmits the first grounding measurement sub-signal to the signal amplification module; The second acquisition submodule determines the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live wire to ground mode, and transmits the second grounding measurement sub-signal to the signal amplification module.

[0051] Optionally, a pair of optocouplers can be used to measure the voltage between the live and neutral wires of the LN circuit and ground, but this embodiment of the invention does not limit the scope of the measurement.

[0052] As can be seen, this optional embodiment can acquire the grounding status detection signal of the ultrasonic periodontal cleaning device based on the live and neutral wires through the first acquisition submodule and the second acquisition submodule, acquire the complete signal of the ultrasonic periodontal cleaning device, reduce signal fluctuations, improve the signal quality and signal stability of the acquired signal, improve the anti-interference ability of the signal, and thus improve the accuracy and reliability of the grounding measurement signal and reduce acquisition and measurement errors.

[0053] In yet another optional embodiment, the signal amplification module may include a first amplification submodule matched with the first acquisition submodule and a second amplification submodule matched with the second acquisition submodule, wherein: The first end of the first acquisition submodule is electrically connected to the first end of the first amplification submodule, the second end of the first amplification submodule is electrically connected to the control module, the first end of the second acquisition submodule is electrically connected to the first end of the second amplification submodule, and the second end of the second amplification submodule is electrically connected to the control module. Furthermore, the signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device, which may include: The first amplification submodule performs corresponding signal amplification processing operations on the first grounding measurement sub-signal to obtain the first grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device; The second amplification submodule performs corresponding signal amplification processing on the second grounding measurement sub-signal to obtain the second grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device.

[0054] As can be seen, this optional embodiment can equip the two acquisition sub-modules with corresponding signal amplification sub-modules, and perform targeted amplification processing on the corresponding acquisition signals in each acquisition sub-module, thereby improving the targeting, fit and accuracy of the signal amplification processing, thereby improving the flexibility and adaptability of the acquisition signals, reducing signal loss during transmission, and improving the stability of signal transmission and signal application.

[0055] In yet another optional embodiment, the first acquisition submodule may include a first current-limiting resistor and a first optocoupler, wherein: The first terminal of the first current-limiting resistor is electrically connected to the first terminal of the first conducting optocoupler; the second terminal of the first conducting optocoupler is electrically connected to the first terminal of the first amplification submodule; the second terminal of the first current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the first current-limiting resistor is electrically connected to the third terminal of the first conducting optocoupler; the fourth terminal of the first current-limiting resistor is used for grounding. Furthermore, the first acquisition submodule determines the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral-to-ground method, which may include: When the ultrasonic periodontal cleaning device is in good grounding condition, the first current limiting resistor receives the first current signal input through the neutral wire. The first current limiting resistor performs corresponding current processing operations on the first current signal and outputs it to the first conducting optocoupler. After detecting the first current signal, the first conducting optocoupler performs the corresponding optocoupler opening operation to obtain the first grounding measurement sub-signal.

[0056] Optionally, the device can be grounded via a series resistor through a neutral wire. When the ultrasonic periodontal cleaning device is properly grounded, current (i.e., the first current signal) will pass through it, and then the first conducting optocoupler will be turned on to obtain the first grounding measurement sub-signal. This embodiment of the invention is not limited to this.

[0057] As can be seen, this optional embodiment can process relevant signals through the first current-limiting resistor and transmit them to the first conducting optocoupler to trigger its opening when the ultrasonic periodontal cleaning device is in a good grounding state, thereby obtaining the first grounding measurement sub-signal. It can suppress interference from irrelevant signals, realize the conversion of different types of signals, protect the safety of the load circuit, improve the processing targeting of the first grounding measurement sub-signal, and improve the stability and reliability of the first grounding measurement sub-signal.

[0058] In yet another optional embodiment, the second acquisition submodule may include a second current-limiting resistor and a second optocoupler, wherein: The first terminal of the second current-limiting resistor is electrically connected to the first terminal of the second optocoupler; the second terminal of the second optocoupler is electrically connected to the first terminal of the second amplification submodule; the second terminal of the second current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the second current-limiting resistor is electrically connected to the third terminal of the second optocoupler; the fourth terminal of the second current-limiting resistor is used for grounding. Furthermore, the second acquisition submodule determines the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live-to-ground mode, which may include: When the ultrasonic periodontal cleaning device is properly grounded, the second current-limiting resistor receives the second current signal input through the live wire. The second current-limiting resistor performs corresponding current processing operations on the second current signal and outputs it to the second optocoupler. After detecting the second current signal, the second optocoupler performs the corresponding optocoupler opening operation to obtain the second grounding measurement sub-signal.

[0059] Optionally, the live wire can be grounded through a series resistor. When the ultrasonic periodontal cleaning device is properly grounded, current (i.e., the second current signal) will pass through, and then the second conducting optocoupler will be turned on to obtain the second grounding measurement sub-signal. This embodiment of the invention is not limited.

[0060] As can be seen, this optional embodiment can process relevant signals through the second current-limiting resistor and transmit them to the second conducting optocoupler to trigger its opening when the ultrasonic periodontal cleaning device is in a good grounding state, thereby obtaining the second grounding measurement sub-signal. It can suppress interference from irrelevant signals, realize the conversion of different types of signals, protect the safety of the load circuit, improve the processing targeting of the second grounding measurement sub-signal, and improve the stability and reliability of the second grounding measurement sub-signal.

[0061] Example 2 Please see Figure 2 , Figure 2 This is a schematic diagram of a leakage current control circuit for an ultrasonic periodontal cleaning device disclosed in an embodiment of the present invention. The leakage current control circuit includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit, wherein: The first terminal of the grounding state determination circuit is electrically connected to the first terminal of the first leakage current transfer circuit; the second terminal of the grounding state determination circuit is electrically connected to the first terminal of the second leakage current transfer circuit; the third terminal of the grounding state determination circuit is used for grounding; and the fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning device. The grounding state determination circuit is used to determine the grounding signal for the ultrasonic periodontal cleaning device and to determine whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal. When the determination result is yes, the ultrasonic periodontal cleaning device is controlled to output the leakage current signal it generates to the first leakage current transfer circuit. When the determination result is no, the ultrasonic periodontal cleaning device is controlled to output the leakage current signal it generates to the second leakage current transfer circuit. The first leakage current transfer circuit is used to transmit the received leakage current signal to the ground. The second leakage current transfer circuit is used to transmit the received leakage current signal to other current-carrying objects, which do not include the patient's oral cavity and the ground.

[0062] As can be seen, the embodiments of the present invention can match corresponding leakage current transfer methods according to the grounding status of the ultrasonic periodontal cleaning device. The grounding status of the ultrasonic periodontal cleaning device is determined by the grounding status determination circuit, and the first leakage current transfer circuit and the second leakage current transfer circuit realize the targeted leakage current transfer control function. This realizes the leakage current transfer function of the ultrasonic periodontal cleaning device, which is conducive to improving the accuracy and targeting of leakage current transfer control of the ultrasonic periodontal cleaning device, as well as improving the efficiency, timeliness and convenience of leakage current transfer control of the ultrasonic periodontal cleaning device. In turn, it is conducive to reducing the leakage current flowing through the human body, reducing the risk of static electricity to patients, and helping to optimize the user's teeth cleaning experience and teeth cleaning comfort.

[0063] In an optional embodiment, the grounding state determination circuit may include a grounding signal determination module and a control module, wherein: The signal output terminal of the grounding signal determination module is electrically connected to the first terminal of the control module; the second terminal of the control module is electrically connected to the first terminal of the first leakage current transfer circuit; the third terminal of the control module is electrically connected to the first terminal of the second leakage current transfer circuit; the first signal acquisition terminal of the grounding signal determination module is used to electrically connect to the ultrasonic periodontal cleaning device; the second signal acquisition terminal of the grounding signal determination module is used for grounding. The grounding signal determination module is used to determine the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, and transmit the grounding application signal to the control module. The control module is used to determine the grounding voltage data based on the grounding application signal; determine whether the grounding voltage data meets the preset voltage conditions, including voltage magnitude conditions and / or voltage stability conditions; when the determination result is yes, determine that the ultrasonic periodontal cleaning device meets the preset grounding state conditions; when the determination result is no, determine that the ultrasonic periodontal cleaning device does not meet the preset grounding state conditions. The control module is also used to generate an enable signal and send the enable signal to the first leakage current transfer circuit to trigger the first leakage current transfer circuit to perform corresponding operations and thus realize the leakage current control function.

[0064] As can be seen, this optional embodiment can determine the grounding application signal corresponding to the ultrasonic periodontal cleaning device through the grounding signal determination module, and obtain the grounding state condition judgment result by analyzing the grounding application signal through the control module. The grounding state condition judgment result is determined based on the determined voltage condition satisfaction. This is beneficial to improving the rationality of the grounding application signal determination method of the ultrasonic periodontal cleaning device, thereby improving the accuracy and reliability of the determined grounding application signal, as well as the comprehensiveness and rationality of the grounding state condition judgment method, which in turn improves the accuracy and reliability of the determined grounding state condition judgment result. This, in turn, helps to improve the accuracy, efficiency, and timeliness of subsequent leakage current transfer control.

[0065] In another optional embodiment, the ground signal determination module may include a signal detection module and a signal amplification module, wherein: The first terminal of the signal detection module is electrically connected to the first terminal of the signal amplification module; the second terminal of the signal amplification module is electrically connected to the first terminal of the control module; the second terminal of the signal detection module is used for electrical connection to the ultrasonic periodontal cleaning device; the third terminal of the signal detection module is used for grounding. The signal detection module is used to obtain a grounding measurement signal by performing a corresponding grounding detection operation based on the ultrasonic periodontal cleaning equipment, and then transmits the grounding measurement signal to the signal amplification module. The signal amplification module is used to perform corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning equipment.

[0066] As can be seen, this optional embodiment can acquire the grounding measurement signal of the ultrasonic periodontal cleaning device through the signal detection module and perform corresponding signal amplification processing on the grounding measurement signal through the signal amplification module to obtain the grounding application signal, thereby improving the signal strength and signal detectability of the determined grounding application signal, and thus improving the anti-interference ability and stability of the grounding application signal in the signal transmission and processing analysis process, thereby improving the accuracy of subsequent analysis of the grounding application signal and control of leakage current.

[0067] In yet another alternative embodiment, the first leakage current transfer circuit may include at least a short-circuit control module, wherein: The first terminal of the short-circuit control module is electrically connected to the second terminal of the control module; the functional ground terminal of the short-circuit control module is electrically connected to the application part of the ultrasonic periodontal cleaning device; the third terminal of the short-circuit control module is used for grounding; when the short-circuit control module receives an enable signal, the functional ground terminal and the third terminal are connected. The short-circuit control module is used to perform a short-circuit trigger operation between the functional ground and the earth of the corresponding equipment application part based on the enable signal, so that the received leakage current signal flows directly away from the earth.

[0068] Optionally, the first leakage current transfer circuit and the electrical connections of the electronic components in the first leakage current transfer circuit can be found in [reference needed]. Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of a first leakage current transfer circuit disclosed in an embodiment of the present invention, as shown below. Figure 3 As shown, the leakage current transfer circuit can be composed of a short-circuit control module (such as relay K1) alone, or it can be composed of relay K1 and other electronic components. This embodiment of the invention does not limit the components.

[0069] Optionally, the microcontroller (i.e., the corresponding control module) generates an enable signal and sends it to the relay (i.e., the corresponding short-circuit control module) to open the relay and short-circuit the functional ground and the earth, so that the leakage current flows to the earth. This embodiment of the invention is not limited.

[0070] As can be seen, this optional embodiment can achieve the function of direct leakage current signal flow to the ground by executing the short-circuit trigger operation between the functional ground of the corresponding equipment application part and the ground through the short-circuit control module. This is conducive to improving the rationality and feasibility of leakage current transfer control, and thus improving the control accuracy and efficiency of leakage current flow to the ground. It not only reduces the impact of leakage current on the user's teeth cleaning experience and eliminates static electricity hazards, but also reduces the electromagnetic interference of leakage current on ultrasonic periodontal cleaning equipment and stabilizes equipment operation.

[0071] In yet another optional embodiment, the signal detection module may include a first acquisition submodule and a second acquisition submodule, wherein: The first terminal of the first acquisition submodule and the first terminal of the second acquisition submodule are electrically connected to the first terminal of the signal amplification module, respectively; the neutral terminal of the first acquisition submodule and the live terminal of the second acquisition submodule are electrically connected to the ultrasonic periodontal cleaning device, respectively; the second terminal of the first acquisition submodule and the second terminal of the second acquisition submodule are grounded, respectively. The first acquisition submodule is used to determine the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral wire to ground mode, and transmit the first grounding measurement sub-signal to the signal amplification module; The second acquisition submodule is used to determine the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live wire to ground mode, and transmit the second grounding measurement sub-signal to the signal amplification module.

[0072] As can be seen, this optional embodiment can acquire the grounding status detection signal of the ultrasonic periodontal cleaning device based on the live and neutral wires through the first acquisition submodule and the second acquisition submodule, acquire the complete signal of the ultrasonic periodontal cleaning device, reduce signal fluctuations, improve the signal quality and signal stability of the acquired signal, improve the anti-interference ability of the signal, and thus improve the accuracy and reliability of the grounding measurement signal and reduce acquisition and measurement errors.

[0073] In yet another optional embodiment, the signal amplification module may include a first amplification submodule matched with the first acquisition submodule and a second amplification submodule matched with the second acquisition submodule, wherein: The first end of the first acquisition submodule is electrically connected to the first end of the first amplification submodule, the second end of the first amplification submodule is electrically connected to the control module, the first end of the second acquisition submodule is electrically connected to the first end of the second amplification submodule, and the second end of the second amplification submodule is electrically connected to the control module. The first amplification submodule is used to perform corresponding signal amplification processing operations on the first grounding measurement sub-signal to obtain the first grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device. The second amplification submodule is used to perform corresponding signal amplification processing operations on the second grounding measurement sub-signal to obtain the second grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device.

[0074] Optional, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of a first amplification submodule disclosed in an embodiment of the present invention, as shown below. Figure 4 As shown, the first amplification submodule can be composed solely of amplifier U16B, or it can be composed of amplifier U16B and other electronic components. Further, the first amplification submodule may include amplifier U16B, resistors R51, R545, R55, R131, and capacitor C107. Specifically, interface terminal 5 of amplifier U16B is electrically connected to the first end of resistor R51 and AC_ADC1 (corresponding to the first end of the first acquisition submodule), and the second end of resistor R51 is grounded. Interface terminal 6 of amplifier U16B is electrically connected to the first ends of resistors R54 and R55, and the second end of resistor R54 is grounded. Interface terminal 7 of amplifier U16B is electrically connected to the second end of resistor R55 and the first end of resistor R131, and the second end of resistor R131 is electrically connected to the first end of capacitor C107 and AC_ADC1_OUT (corresponding to the control module), and the second end of capacitor C107 is grounded. This embodiment of the invention is not limited to any particular type.

[0075] Optional, optional, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of a second amplification submodule disclosed in an embodiment of the present invention, as shown below. Figure 4 As shown, the second amplification submodule can be composed solely of amplifier U16A, or it can be composed of amplifier U16A and other electronic components. Furthermore, the second amplification submodule may include amplifier U16A, capacitor C105, resistors R50, R52, R3, R130, and capacitor C106. The interface terminal 1 of amplifier U16A is electrically connected to the first terminals of resistors R53 and R130, and the second terminal of resistor R130 is electrically connected to the first terminal of capacitor C106 and AC_ADC2_OUT (i.e., the corresponding control module). The second end of capacitor C106 is used for grounding. Interface terminal 2 of amplifier U16A is electrically connected to the second end of resistor R53 and the first end of resistor R52. The second end of resistor R52 is used for grounding. Interface terminal 4 of amplifier U16A is used for grounding. Interface terminal 3 of amplifier U16A is electrically connected to the first end of R50 and AC_ADC2 (i.e., the first end corresponding to the second acquisition submodule). Interface terminal 8 of amplifier U16A is electrically connected to the first end of capacitor C105 and the power supply terminal (e.g., +12V). The second end of capacitor C105 is used for grounding. This embodiment of the invention is not limited.

[0076] As can be seen, this optional embodiment can equip the two acquisition sub-modules with corresponding signal amplification sub-modules, and perform targeted amplification processing on the corresponding acquisition signals in each acquisition sub-module, thereby improving the targeting, fit and accuracy of the signal amplification processing, thereby improving the flexibility and adaptability of the acquisition signals, reducing signal loss during transmission, and improving the stability of signal transmission and signal application.

[0077] In yet another optional embodiment, the first acquisition submodule may include a first current-limiting resistor and a first optocoupler, wherein: The first terminal of the first current-limiting resistor is electrically connected to the first terminal of the first conducting optocoupler; the second terminal of the first conducting optocoupler is electrically connected to the first terminal of the first amplification submodule; the second terminal of the first current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the first current-limiting resistor is electrically connected to the third terminal of the first conducting optocoupler; the fourth terminal of the first current-limiting resistor is used for grounding. The first current-limiting resistor is used to receive the first current signal input through the neutral wire when the ultrasonic periodontal cleaning device is in a good grounding state, perform corresponding current processing operations on the first current signal and output it to the first conducting optocoupler. The first conducting optocoupler is used to perform a corresponding optocoupler opening operation after detecting the first current signal, so as to obtain the first grounding measurement sub-signal.

[0078] Optionally, the first current-limiting resistor can be set to one or more specific resistors according to actual needs, and the embodiments of the present invention do not limit it.

[0079] Optional, such as Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of a first acquisition submodule disclosed in an embodiment of the present invention, as shown below. Figure 5 As shown, the first acquisition submodule can be composed solely of the first current-limiting resistors (R33-R36) and the first optocoupler U12, or it can be composed of the first current-limiting resistors (R33-R36), the first optocoupler U12, and other electronic components. More specifically, the first acquisition submodule includes resistors R33, R34, R35, R36, optocoupler U12, resistor R38, capacitor C98, resistor R39, capacitor C99, and capacitor C100. The first terminal of resistor R33 is electrically connected to the AC_N terminal (corresponding to the ultrasonic periodontal cleaning device), the second terminal of resistor R33 is electrically connected to the first terminal of resistor R34, and the second terminal of resistor R34 is electrically connected to interface 2 of optocoupler U12. Interface terminal 1 of optocoupler U12 is electrically connected to the first end of resistor R35. The second end of resistor R35 is electrically connected to the first end of resistor R36. The second end of resistor R36 is used for grounding. Interface terminal 3 of optocoupler U12 is electrically connected to the first ends of resistor R38 and resistor R39 respectively. The second end of resistor R38 and the first end of capacitor C98 are both electrically connected to the AC_ADC1 terminal (i.e., the first end of the first amplification submodule). The second end of capacitor C98 and the second end of resistor R39 are both used for grounding. Interface terminal 4 of optocoupler U12, the first end of capacitor C99, and the first end of capacitor C100 are all used for electrical connection to the power supply terminal (+12V). The second ends of capacitor C99 and the second ends of capacitor C100 are both used for grounding. This embodiment of the invention is not limited.

[0080] As can be seen, this optional embodiment can process relevant signals through the first current-limiting resistor and transmit them to the first conducting optocoupler to trigger its opening when the ultrasonic periodontal cleaning device is in a good grounding state, thereby obtaining the first grounding measurement sub-signal. It can suppress interference from irrelevant signals, realize the conversion of different types of signals, protect the safety of the load circuit, improve the processing targeting of the first grounding measurement sub-signal, and improve the stability and reliability of the first grounding measurement sub-signal.

[0081] In yet another optional embodiment, the second acquisition submodule includes a second current-limiting resistor and a second optocoupler, wherein: The first terminal of the second current-limiting resistor is electrically connected to the first terminal of the second optocoupler; the second terminal of the second optocoupler is electrically connected to the first terminal of the second amplification submodule; the second terminal of the second current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the second current-limiting resistor is electrically connected to the third terminal of the second optocoupler; the fourth terminal of the second current-limiting resistor is used for grounding. The second current-limiting resistor is used to receive the second current signal input through the live wire when the ultrasonic periodontal cleaning equipment is in a good grounding state, perform corresponding current processing operations on the second current signal and output it to the second conducting optocoupler. The second conducting optocoupler is used to perform a corresponding optocoupler opening operation after detecting the second current signal, so as to obtain the second grounding measurement sub-signal.

[0082] Optionally, the second current-limiting resistor can be set to one or more specific resistors according to actual needs, and the embodiments of the present invention do not limit it.

[0083] Optional, optional, such as Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of a second acquisition submodule disclosed in an embodiment of the present invention, as shown below. Figure 5 As shown, the second acquisition submodule can be composed solely of the second current-limiting resistors (R41-R44) and the second optocoupler U14, or it can be composed of the second current-limiting resistors (R41-R44), the second optocoupler U14, and other electronic components. More specifically, the second acquisition submodule includes resistors R41, R42, R43, R44, optocoupler U14, resistor R47, capacitor C101, resistor R49, capacitor C102, and capacitor C103. The interface terminal 1 of optocoupler U14 is electrically connected to the first terminal of resistor R43, the second terminal of resistor R43 is electrically connected to the first terminal of resistor R44, and the second terminal of resistor R44 is electrically connected to the AC_L terminal (corresponding to the ultrasonic periodontal cleaning device). Resistor R41... The first end of the resistor R41 is used for grounding. The second end of the resistor R41 is electrically connected to the first end of the resistor R42. The second end of the resistor R42 is electrically connected to the interface 2 of the optocoupler U14. The interface 3 of the optocoupler U14 is electrically connected to the first ends of the resistor R47 and the first ends of the resistor R49, respectively. The second end of the resistor R47 and the first end of the capacitor C101 are both electrically connected to the AC_ADC2 terminal (i.e., the first end of the corresponding second amplification submodule). The second ends of the capacitor C101 and the second ends of the resistor R49 are both used for grounding. The interface 4 of the optocoupler U14, the first end of the capacitor C102, and the first end of the capacitor C103 are all used for electrical connection to the power supply terminal (+12V). The second ends of the capacitor C102 and the second ends of the capacitor C103 are both used for grounding. This embodiment of the invention is not limited.

[0084] As can be seen, this optional embodiment can process relevant signals through the second current-limiting resistor and transmit them to the second conducting optocoupler to trigger its opening when the ultrasonic periodontal cleaning device is in a good grounding state, thereby obtaining the second grounding measurement sub-signal. It can suppress interference from irrelevant signals, realize the conversion of different types of signals, protect the safety of the load circuit, improve the processing targeting of the second grounding measurement sub-signal, and improve the stability and reliability of the second grounding measurement sub-signal.

[0085] Example 3 Please see Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of a leakage current control device disclosed in an embodiment of the present invention. The leakage current control device includes a device body and a leakage current control circuit applied to an ultrasonic periodontal cleaning device, and is used to execute the leakage current control method applied to an ultrasonic periodontal cleaning device as described in Embodiment 1.

[0086] It should be noted that for a detailed description of the leakage current control circuit applied to the ultrasonic periodontal cleaning equipment, please refer to the specific description of the relevant data in Embodiment 2. For a detailed description of the leakage current control method applied to the ultrasonic periodontal cleaning equipment, please refer to the specific description of the relevant data in Embodiment 1. This embodiment will not repeat the description.

[0087] It is evident that implementation Figure 6 The described leakage current control device can match corresponding leakage current transfer methods according to the grounding status of the ultrasonic periodontal cleaning device. The grounding status of the ultrasonic periodontal cleaning device is determined by the grounding status determination circuit, and the first leakage current transfer circuit and the second leakage current transfer circuit realize the targeted leakage current transfer control function. This improves the accuracy and targeting of leakage current transfer control of the ultrasonic periodontal cleaning device, as well as its efficiency, timeliness and convenience. In turn, it helps to reduce leakage current flowing through the human body, reduce the risk of static electricity to patients, and help optimize the user's teeth cleaning experience and comfort.

[0088] The foregoing has provided a detailed description of a leakage current control method, circuit, and device for ultrasonic periodontal cleaning equipment disclosed in the embodiments of the present invention. Specific embodiments have been used to illustrate the principles and implementation of the present invention. However, the above preferred embodiments are not intended to limit the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, based on the ideas of the present invention, there will be changes in the specific implementation and application scope without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A method for controlling leakage current in ultrasonic periodontal cleaning equipment, characterized in that, The method is applied to a leakage current control circuit, which includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit. The first terminal of the grounding state determination circuit is electrically connected to the first terminal of the first leakage current transfer circuit, and the second terminal of the grounding state determination circuit is electrically connected to the first terminal of the second leakage current transfer circuit. The third terminal of the grounding state determination circuit is used for grounding; The fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning device; the method includes: The grounding state determination circuit determines the grounding signal for the ultrasonic periodontal cleaning device and determines whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal. When the judgment result is yes, the grounding state determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the first leakage current transfer circuit, and the first leakage current transfer circuit transmits the received leakage current signal to the ground. When the determination result is negative, the grounding state determination circuit controls the ultrasonic periodontal cleaning device to output the leakage current signal it generates to the second leakage current transfer circuit. The second leakage current transfer circuit transmits the received leakage current signal to other current-bearing objects, which do not include the patient's oral cavity and the ground.

2. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 1, characterized in that, The grounding state determination circuit includes a grounding signal determination module and a control module, wherein: The signal output terminal of the grounding signal determination module is electrically connected to the first terminal of the control module; the second terminal of the control module is electrically connected to the first terminal of the first leakage current transfer circuit; the third terminal of the control module is electrically connected to the first terminal of the second leakage current transfer circuit; the first signal acquisition terminal of the grounding signal determination module is used to electrically connect to the ultrasonic periodontal cleaning device; the second signal acquisition terminal of the grounding signal determination module is used for grounding. And, the grounding state determination circuit determines the grounding signal for the ultrasonic periodontal cleaning device, and determines whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal, including: The grounding signal determination module determines the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, and transmits the grounding application signal to the control module; The control module determines the grounding voltage data based on the grounding application signal; it determines whether the grounding voltage data meets the preset voltage conditions, which include voltage magnitude conditions and / or voltage stability conditions; when the determination result is yes, it determines that the ultrasonic periodontal cleaning device meets the preset grounding state conditions; when the determination result is no, it determines that the ultrasonic periodontal cleaning device does not meet the preset grounding state conditions. Furthermore, the grounding state determination circuit controls the leakage current signal of the ultrasonic periodontal cleaning device to be output to the first leakage current transfer circuit to achieve leakage current control function, including: The control module generates an enable signal and sends the enable signal to the first leakage current transfer circuit to trigger the first leakage current transfer circuit to perform corresponding operations and thereby realize the leakage current control function.

3. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 2, characterized in that, The grounding signal determination module includes a signal detection module and a signal amplification module, wherein: The first terminal of the signal detection module is electrically connected to the first terminal of the signal amplification module; the second terminal of the signal amplification module is electrically connected to the first terminal of the control module; the second terminal of the signal detection module is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the signal detection module is used for grounding. And, the grounding signal determination module determines the grounding application signal corresponding to the ultrasonic periodontal cleaning device based on the acquired grounding measurement signal, including: The signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal, and transmits the grounding measurement signal to the signal amplification module; The signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device.

4. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 2, characterized in that, The first leakage current transfer circuit includes at least a short-circuit control module, wherein: The first terminal of the short-circuit control module is electrically connected to the second terminal of the control module; the functional ground terminal of the short-circuit control module is electrically connected to the device application part in the ultrasonic periodontal cleaning device; the third terminal of the short-circuit control module is used for grounding; when the short-circuit control module receives the enable signal, the functional ground terminal and the third terminal are connected. And, the first leakage current transfer circuit transmits the received leakage current signal to ground, including: The short-circuit control module performs a short-circuit trigger operation between the functional ground of the corresponding device application part and the ground based on the enable signal, so that the received leakage current signal flows directly away from the ground.

5. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 3, characterized in that, The signal detection module includes a first acquisition submodule and a second acquisition submodule, wherein: The first terminal of the first acquisition submodule and the first terminal of the second acquisition submodule are respectively electrically connected to the first terminal of the signal amplification module; the neutral terminal of the first acquisition submodule and the live terminal of the second acquisition submodule are respectively used to electrically connect to the ultrasonic periodontal cleaning device; the second terminal of the first acquisition submodule and the second terminal of the second acquisition submodule are respectively used for grounding. Furthermore, the signal detection module performs a corresponding grounding detection operation based on the ultrasonic periodontal cleaning device to obtain a grounding measurement signal, and transmits the grounding measurement signal to the signal amplification module, including: The first acquisition submodule determines the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral wire to ground mode, and transmits the first grounding measurement sub-signal to the signal amplification module; The second acquisition submodule determines the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live wire to ground mode, and transmits the second grounding measurement sub-signal to the signal amplification module.

6. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 5, characterized in that, The signal amplification module includes a first amplification submodule that matches the first acquisition submodule and a second amplification submodule that matches the second acquisition submodule, wherein: The first terminal of the first acquisition submodule is electrically connected to the first terminal of the first amplification submodule, and the second terminal of the first amplification submodule is electrically connected to the control module. The first terminal of the second acquisition submodule is electrically connected to the first terminal of the second amplification submodule, and the second terminal of the second amplification submodule is electrically connected to the control module. Furthermore, the signal amplification module performs corresponding signal amplification processing on the grounding measurement signal to obtain the grounding application signal corresponding to the ultrasonic periodontal cleaning device, including: The first amplification submodule performs corresponding signal amplification processing operations on the first grounding measurement sub-signal to obtain the first grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device; The second amplification submodule performs corresponding signal amplification processing on the second grounding measurement sub-signal to obtain the second grounding application sub-signal corresponding to the ultrasonic periodontal cleaning device.

7. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 6, characterized in that, The first acquisition submodule includes a first current-limiting resistor and a first optocoupler, wherein: The first terminal of the first current-limiting resistor is electrically connected to the first terminal of the first optocoupler; the second terminal of the first optocoupler is electrically connected to the first terminal of the first amplification submodule; the second terminal of the first current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the first current-limiting resistor is electrically connected to the third terminal of the first optocoupler; the fourth terminal of the first current-limiting resistor is used to ground. And, the first acquisition submodule determines the first grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the neutral-to-ground method, including: When the ultrasonic periodontal cleaning device is in a good grounding state, the first current limiting resistor receives the first current signal input through the neutral wire. The first current limiting resistor performs a corresponding current processing operation on the first current signal and outputs it to the first conducting optocoupler. After the first conducting optocoupler detects the first current signal, it performs a corresponding optocoupler opening operation to obtain the first grounding measurement sub-signal.

8. The leakage current control method for ultrasonic periodontal cleaning equipment according to claim 6, characterized in that, The second acquisition submodule includes a second current-limiting resistor and a second optocoupler, wherein: The first terminal of the second current-limiting resistor is electrically connected to the first terminal of the second optocoupler; the second terminal of the second optocoupler is electrically connected to the first terminal of the second amplification submodule; the second terminal of the second current-limiting resistor is used to electrically connect to the ultrasonic periodontal cleaning device; the third terminal of the second current-limiting resistor is electrically connected to the third terminal of the second optocoupler; the fourth terminal of the second current-limiting resistor is used to ground. And, the second acquisition submodule determines the second grounding measurement sub-signal corresponding to the ultrasonic periodontal cleaning device based on the live-to-ground mode, including: When the ultrasonic periodontal cleaning device is in a good grounding state, the second current limiting resistor receives the second current signal input through the live wire. The second current limiting resistor performs a corresponding current processing operation on the second current signal and outputs it to the second optocoupler. After detecting the second current signal, the second optocoupler performs a corresponding optocoupler opening operation to obtain the second grounding measurement sub-signal.

9. A leakage current control circuit for use in ultrasonic periodontal cleaning equipment, characterized in that, The leakage current control circuit includes a grounding state determination circuit and a leakage current adjustment circuit. The leakage current adjustment circuit includes a first leakage current transfer circuit and / or a second leakage current transfer circuit, wherein: The first terminal of the grounding state determination circuit is electrically connected to the first terminal of the first leakage current transfer circuit; the second terminal of the grounding state determination circuit is electrically connected to the first terminal of the second leakage current transfer circuit; the third terminal of the grounding state determination circuit is used for grounding; and the fourth terminal of the grounding state determination circuit is used for electrical connection to the ultrasonic periodontal cleaning device. The grounding state determination circuit is used to determine the grounding signal for the ultrasonic periodontal cleaning device, and to determine whether the ultrasonic periodontal cleaning device meets the preset grounding state conditions based on the grounding signal. When the determination result is yes, the ultrasonic periodontal cleaning device is controlled to output the leakage current signal it generates to the first leakage current transfer circuit; when the determination result is no, the ultrasonic periodontal cleaning device is controlled to output the leakage current signal it generates to the second leakage current transfer circuit. The first leakage current transfer circuit is used to transmit the received leakage current signal to ground; The second leakage current transfer circuit is used to transmit the received leakage current signal to other current-bearing objects, which do not include the patient's oral cavity and the ground.

10. A leakage current control device, characterized in that, The leakage current control device includes a device body, and the leakage current control device further includes the leakage current control circuit for ultrasonic periodontal cleaning equipment as described in claim 9.

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