Voltage intelligent detection alarm control circuit, oral irrigator and electric toothbrush

Abstract

The utility model provides a voltage intelligent detection alarm control circuit, an oral irrigator and an electric toothbrush, and belongs to the field of oral equipment circuits. The circuit is connected to a load, and a detection pin of a control unit is connected with a series connection point between a first divider resistor and a second divider resistor; when the power supply voltage is stable and normal, the change of the first divider resistor and the second divider resistor is small, so that the voltage at the two ends of the resistor does not change. When the two ends of the first divider resistor and the second divider resistor are in contact with liquid or other conductors or the working voltage of the power supply changes, the resistance value changes, so that the voltage at the two ends of the first divider resistor and the second divider resistor changes. Therefore, the control unit controls the two alarm units to carry out sound reminding and light reminding, and the alarm effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of oral equipment circuits, and in particular provides a voltage intelligent detection alarm control circuit, a water flosser and an electric toothbrush. Background Art

[0002] In the field of oral equipment, such as water flossers and electric toothbrushes. When using a water flosser, a water pump is required to pump out a pulsed water flow. Long-term operation may cause water leakage or pump jam, which may lead to safety hazards. Similarly, electric toothbrushes work by swinging the brush head through a motor. Long-term operation in the oral environment may also cause water ingress to the movement and motor jam.

[0003] However, the current commercially available products do not have a water leakage detection function or a power supply voltage abnormality detection alarm function. Even if they have such functions, they are detected by using a high-cost sensor, which is not economical. Therefore, in order to improve safety and economy at the same time, the utility model comes into being. Utility Model Content

[0004] In view of the above, the utility model aims to solve the problems of water leakage detection and voltage stability detection of oral equipment on the market.

[0005] Based on this aspect, the utility model provides a voltage intelligent detection alarm control circuit, which is characterized by comprising:

[0006] A voltage-dividing detection unit, the voltage-dividing detection unit at least comprising a first voltage-dividing resistor and a second voltage-dividing resistor connected in series to a load circuit, the voltage-dividing detection unit forming a detection signal according to a voltage change;

[0007] A control unit, wherein the control unit is connected to a series connection point between the first voltage-dividing resistor and the second voltage-dividing resistor;

[0008] A light display alarm unit, the light display alarm unit is connected to the control unit;

[0009] An audio and video alarm unit is connected to the control unit.

[0010] Preferably, the light display alarm unit includes at least a first transistor and an alarm indicator light; the first transistor is connected to the control unit, and the alarm indicator light is connected to the first transistor.

[0011] Preferably, the light display alarm unit further includes a first pull-down resistor, and the first pull-down resistor is connected to a pin of the control unit. When the control unit does not receive a detection signal, the pin presents a low impedance and outputs a low level.

[0012] Preferably, the sound display alarm unit at least includes a second transistor and a sound display module; the second transistor is connected to the control unit, and the sound display module is connected to the second transistor.

[0013] Preferably, the sound display alarm unit further includes a second pull-down resistor, and the second pull-down resistor is connected to a pin of the control unit. When the control unit does not receive the detection signal, the pin presents a low impedance and outputs a low level.

[0014] Preferably, the voltage change is defined as a voltage change caused by a water leakage contact circuit; or a real-time working voltage change of a power supply.

[0015] The utility model also provides a water flosser, characterized in that it at least comprises a water flosser body and the above-mentioned voltage intelligent detection alarm control circuit; the load circuit is the working circuit of the water flosser body.

[0016] The utility model also provides an electric toothbrush, which is characterized in that it at least comprises an electric toothbrush body and the above-mentioned voltage intelligent detection alarm control circuit; the load circuit is the working circuit of the electric toothbrush body.

[0017] The beneficial effects of the above technical solution can come from one or a combination of the following:

[0018] It solves the problem that the product circuit leaks and cannot give an alarm; and the cost of the sensor is eliminated through circuit settings, which is more economical and safer.

[0019] The power supply voltage status can be monitored in real time, which is safe and reliable, ensuring the safety of the product, ensuring economy and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A circuit structure diagram of the utility model is expressed. DETAILED DESCRIPTION

[0021] The preferred embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0022] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

[0023] See also Figure 1, this embodiment provides a voltage intelligent detection alarm control circuit, including a voltage dividing detection unit, a control unit, a light display alarm unit and a sound display alarm unit. Among them, the voltage dividing detection unit at least includes a first voltage dividing resistor and a second voltage dividing resistor connected in series with the load circuit, and the voltage dividing detection unit forms a detection signal according to the voltage change; the control unit is connected to the series connection point between the first voltage dividing resistor and the second voltage dividing resistor; the light display alarm unit and the sound display alarm unit are connected to the control unit. The circuit of this scheme is connected to the load, and the detection pin of the control unit is connected to the series connection point between the first voltage dividing resistor and the second voltage dividing resistor. When the power supply voltage is stable and normal, the first voltage dividing resistor and the second voltage dividing resistor change very little, so that the voltage across the resistors does not change. When the first voltage dividing resistor and the second voltage dividing resistor are in contact with liquid or other conductors or the power supply working voltage changes, their resistance values ​​will change, so that the voltage across the first voltage dividing resistor and the second voltage dividing resistor will change. Thus, the control unit controls the two alarm units to make sound reminders and light reminders, which play an alarm role.

[0024] The above is necessary to achieve the technical purpose of this embodiment, and is further described in detail below with reference to the accompanying drawings:

[0025] The light display alarm unit warns through light, and it at least includes a first transistor and an alarm indicator light. The first transistor is connected to the control unit, and the alarm indicator light is connected to the first transistor. The alarm indicator light is preferably an LED indicator light. Similarly, the sound display alarm unit warns through sound, and it at least includes a second transistor and an acoustic display module. The second transistor is connected to the control unit, and the acoustic display module is connected to the second transistor. The acoustic display module is preferably a speaker component.

[0026] The control unit uses existing control module components, which are soldered to the circuit board and connected to the circuit through pins, such as a single-chip microcomputer, a microprocessor, etc.

[0027] Please combine Figure 1, this embodiment can be used for water leakage detection of load circuits, and its voltage change is the voltage change formed after the water leakage contacts the circuit. Specifically, the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are connected in series between the positive and negative poles of the power supply, and the detection pin of the control module components is connected to the series point between the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2). When the power supply voltage is stable and normal and there is no water leakage contact, the resistance change of the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) is very small, so the voltage across the resistors does not change. When the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are in contact with liquid or other conductors, their resistance values ​​will change and the voltage across the resistors will change. The control module components detect whether the product is leaking in this way. When the voltage changes when water leakage occurs, the display reminder pin of the control module components outputs a high level to generate a voltage difference between the B pole and the E pole of the first transistor (Q1), saturating the first transistor (Q1) so that the C pole and the E pole of the first transistor (Q1) are turned on, thereby lighting the indicator LED1. The light display alarm unit also includes a first pull-down resistor (R4), which defaults to pull-down to make the B pole of the first transistor (Q1) a low level, so that the display reminder pin of the control module components is a low level, thereby improving anti-interference. At the same time, the sound reminder pin of the control module components outputs a high level to generate a voltage difference between the B pole and the E pole of the second transistor (Q2), saturating the second transistor (Q2) so that the C pole and the E pole of the second transistor (Q2) are turned on, thereby causing the sound display module to work and remind. The sound display alarm unit also includes a second pull-down resistor (R7), which defaults to pull-down to make the B pole of the second transistor (Q2) a low level, so that the display reminder pin of the control module components is a low level, thereby improving anti-interference.

[0028] This embodiment can also be used for power supply voltage stability detection of a load circuit, and its voltage change is the real-time working voltage change of the power supply. Specifically, the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are connected in series between the positive and negative electrodes of the power supply, and the detection pin of the control module components is connected to the series connection point between the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2). When the power supply voltage is stable and normal, the resistance change of the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) is very small, so that the voltage across the resistors does not change. When the power supply voltage increases or decreases, the voltage across the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) will also change. The control module components detect the voltage change of the voltage-dividing resistor in this way to determine the real-time voltage state of the power supply. When the power supply voltage is too high or too low, the display reminder pin of the control module component outputs a high level to generate a voltage difference between the B pole and the E pole of the first transistor (Q1), saturating the first transistor (Q1) so that the C pole and the E pole of the first transistor (Q1) are turned on, thereby lighting the indicator LED1. The light display alarm unit also includes a first pull-down resistor (R4), which defaults to pull-down to make the B pole of the first transistor (Q1) a low level, so that the display reminder pin of the control module component is a low level, thereby improving the anti-interference performance. At the same time, the sound reminder pin of the control module component outputs a high level to generate a voltage difference between the B pole and the E pole of the second transistor (Q2), saturating the second transistor (Q2) so that the C pole and the E pole of the second transistor (Q2) are turned on, thereby causing the sound display module to work and remind. The sound display alarm unit also includes a second pull-down resistor (R7), which defaults to pull-down to make the B pole of the second transistor (Q2) a low level, so that the display reminder pin of the control module component is a low level, thereby improving the anti-interference performance. It should be noted that this embodiment does not involve improvements in program control, and the control methods involved are all preset programs of the microcontroller. This embodiment aims at the connection combination between various components.

[0029] Beneficial effects of this embodiment:

[0030] It solves the problem that the product circuit leaks and cannot give an alarm; and the cost of the sensor is eliminated through circuit settings, which is more economical and safer.

[0031] The power supply voltage status can be monitored in real time, which is safe and reliable, ensuring the safety of the product, ensuring economy and saving costs.

[0032] Embodiment 2:

[0033] Please combine Figure 1 This embodiment provides a water flosser, which at least includes a water flosser body and the voltage intelligent detection alarm control circuit in Embodiment 1, wherein the load circuit described in Embodiment 1 is the working circuit of the water flosser body. It can be used for water leakage detection and real-time monitoring of power supply voltage of the water flosser.

[0034] Among them, the light display alarm unit warns through light, and it at least includes a first transistor and an alarm indicator light. The first transistor is connected to the control unit, and the alarm indicator light is connected to the first transistor. The alarm indicator light is preferably an LED indicator light. Similarly, the sound display alarm unit warns through sound, and it at least includes a second transistor and a sound display module. The second transistor is connected to the control unit, and the sound display module is connected to the second transistor. The sound display module is preferably a speaker component. The control unit adopts existing control module components, which are soldered to the circuit board and connected to the circuit through pins, such as a single-chip microcomputer, a microprocessor, etc.

[0035] Specifically, the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are connected in series between the positive and negative poles of the power supply, and the detection pin of the control module components is connected to the series point between the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2). When the power supply voltage is stable and normal and there is no leakage, the resistance of the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) changes very little, so the voltage across the resistors does not change. When the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are in contact with liquid or other conductors, or when the power supply voltage increases or decreases, their resistance values ​​will change, and thus the voltage across the resistors will change. The control module components detect whether the product is leaking or the power supply is over-voltage or under-voltage in this way. When a water leakage contacts the circuit or the voltage changes unstably, the display reminder pin of the control module components outputs a high level to generate a voltage difference between the B pole and the E pole of the first transistor (Q1), saturating the first transistor (Q1) so that the C pole and the E pole of the first transistor (Q1) are turned on, thereby lighting the indicator LED1. The light display alarm unit also includes a first pull-down resistor (R4), which defaults to pull-down to make the B pole of the first transistor (Q1) a low level, so that the display reminder pin of the control module components is a low level, thereby improving the anti-interference performance. At the same time, the sound reminder pin of the control module components outputs a high level to generate a voltage difference between the B pole and the E pole of the second transistor (Q2), saturating the second transistor (Q2) so that the C pole and the E pole of the second transistor (Q2) are turned on, thereby causing the sound display module to work and remind. The sound display alarm unit also includes a second pull-down resistor (R7), which defaults to pull-down to make the B pole of the second transistor (Q2) a low level, so that the display reminder pin of the control module components is a low level, thereby improving the anti-interference performance. It should be noted that this embodiment does not involve improvements in program control, and the control methods involved are all preset programs of the microcontroller. This embodiment aims at the connection combination between various components.

[0036] Beneficial effects of this embodiment:

[0037] The problem that the water circuit of the water flosser cannot give an alarm when it leaks is solved; and the cost of the sensor is eliminated through circuit setting, which is more economical and safer.

[0038] The power supply voltage status of the water flosser can be monitored in real time, which is safe and reliable, ensuring the safety of the product, ensuring its economy and saving costs.

[0039] Embodiment 3:

[0040] Please combine Figure 1 This embodiment provides an electric toothbrush, which at least includes an electric toothbrush body and the voltage intelligent detection alarm control circuit in Embodiment 1, wherein the load circuit described in Embodiment 1 is the working circuit of the electric toothbrush body. It can be used for water leakage detection and real-time monitoring of power supply voltage of the electric toothbrush.

[0041] Among them, the light display alarm unit warns through light, and it at least includes a first transistor and an alarm indicator light. The first transistor is connected to the control unit, and the alarm indicator light is connected to the first transistor. The alarm indicator light is preferably an LED indicator light. Similarly, the sound display alarm unit warns through sound, and it at least includes a second transistor and a sound display module. The second transistor is connected to the control unit, and the sound display module is connected to the second transistor. The sound display module is preferably a speaker component. The control unit adopts existing control module components, which are soldered to the circuit board and connected to the circuit through pins, such as a single-chip microcomputer, a microprocessor, etc.

[0042] Specifically, the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are connected in series between the positive and negative poles of the power supply, and the detection pin of the control module components is connected to the series point between the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2). When the power supply voltage is stable and normal and there is no leakage, the resistance of the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) changes very little, so the voltage across the resistors does not change. When the first voltage-dividing resistor (R1) and the second voltage-dividing resistor (R2) are in contact with liquid or other conductors, or when the power supply voltage increases or decreases, their resistance values ​​will change, and thus the voltage across the resistors will change. The control module components detect whether the product is leaking or the power supply is over-voltage or under-voltage in this way. When a water leakage contacts the circuit or the voltage changes unstably, the display reminder pin of the control module components outputs a high level to generate a voltage difference between the B pole and the E pole of the first transistor (Q1), saturating the first transistor (Q1) so that the C pole and the E pole of the first transistor (Q1) are turned on, thereby lighting the indicator LED1. The light display alarm unit also includes a first pull-down resistor (R4), which defaults to pull-down to make the B pole of the first transistor (Q1) a low level, so that the display reminder pin of the control module components is a low level, thereby improving the anti-interference performance. At the same time, the sound reminder pin of the control module components outputs a high level to generate a voltage difference between the B pole and the E pole of the second transistor (Q2), saturating the second transistor (Q2) so that the C pole and the E pole of the second transistor (Q2) are turned on, thereby causing the sound display module to work and remind. The sound display alarm unit also includes a second pull-down resistor (R7), which defaults to pull-down to make the B pole of the second transistor (Q2) a low level, so that the display reminder pin of the control module components is a low level, thereby improving the anti-interference performance. It should be noted that this embodiment does not involve improvements in program control, and the control methods involved are all preset programs of the microcontroller. This embodiment aims at the connection combination between various components.

[0043] Beneficial effects of this embodiment:

[0044] The problem that the water circuit of the water flosser cannot give an alarm when it leaks is solved; and the cost of the sensor is eliminated through circuit setting, which is more economical and safer.

[0045] The power supply voltage status of the water flosser can be monitored in real time, which is safe and reliable, ensuring the safety of the product, ensuring its economy and saving costs.

[0046] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0047] It should be understood by those skilled in the art that the embodiments of the present invention described above are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. Voltage intelligent detection alarm control circuit, characterized in that: include: A voltage-dividing detection unit, the voltage-dividing detection unit at least comprising a first voltage-dividing resistor and a second voltage-dividing resistor connected in series to a load circuit, the voltage-dividing detection unit forming a detection signal according to a voltage change; A control unit, wherein the control unit is connected to a series connection point between the first voltage-dividing resistor and the second voltage-dividing resistor; A light display alarm unit, the light display alarm unit is connected to the control unit; An audio and video alarm unit is connected to the control unit.

2. The voltage intelligent detection alarm control circuit according to claim 1 is characterized in that: The light display alarm unit at least includes a first transistor and an alarm indicator light; the first transistor is connected to the control unit, and the alarm indicator light is connected to the first transistor.

3. The voltage intelligent detection alarm control circuit according to claim 2 is characterized in that: The light display alarm unit also includes a first pull-down resistor, which is connected to a pin of the control unit. When the control unit does not receive a detection signal, the pin presents a low impedance and outputs a low level.

4. The voltage intelligent detection alarm control circuit according to claim 1 is characterized in that: The sound display alarm unit at least includes a second transistor and a sound display module; the second transistor is connected to the control unit, and the sound display module is connected to the second transistor.

5. The voltage intelligent detection alarm control circuit according to claim 4 is characterized in that: The sound display alarm unit also includes a second pull-down resistor, which is connected to a pin of the control unit. When the control unit does not receive a detection signal, the pin presents a low impedance and outputs a low level.

6. The voltage intelligent detection alarm control circuit according to claim 1 is characterized in that: The voltage change is defined as a voltage change caused by a water leakage contact circuit; or a real-time working voltage change of a power supply.

7. A water flosser, characterized in that: It at least comprises a water flosser body and the voltage intelligent detection alarm control circuit as described in any one of claims 1 to 6; the load circuit is the working circuit of the water flosser body.

8. An electric toothbrush, characterized in that It at least comprises an electric toothbrush body and the voltage intelligent detection alarm control circuit according to any one of claims 1 to 6; the load circuit is the working circuit of the electric toothbrush body.

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