Water dispenser energy-saving circuit based on microwave radar

Abstract

According to the water dispenser energy-saving circuit based on the microwave radar, through the arrangement of the microwave radar, when the water dispenser completes work and the microwave radar does not sense a moving object within the range, a system can automatically enter a dormant state after a certain time, all electric parts of the water dispenser operate in a lowest power consumption state, and the water dispenser can work normally. When a person approaches the water dispenser or uses the water dispenser, the microwave radar immediately wakes the main control unit to work. Therefore, the automatic energy-saving use effect of the water dispenser is achieved, and the service life of electrical components is prolonged. Besides, the electromagnetic valve is arranged on the water outlet pipeline, and the control end of the main control unit is electrically connected with the controlled ends of the electromagnetic valve and the heating piece, so that when the main control unit receives the information that the human body approaches the water dispenser, the electromagnetic valve and the heating piece can be closed, and an approaching user is prevented from being scalded. Therefore, the utility model provides a hardware architecture which is favorable for reducing the power consumption of the water dispenser equipment and improving the safety of the water dispenser.

Description

TECHNICAL FIELD

[0001] The utility model relates to drinking water equipment technical field, specifically, relate to a kind of energy-saving circuit of drinking water machine based on microwave radar. BACKGROUND

[0002] At present, in order to keep the sanitary of the water outlet pipeline of drinking water machine, it is necessary to disinfect the water outlet pipeline regularly, and the automatic disinfection function of the existing drinking water machine is to discharge boiling water from the water outlet pipeline regularly, so as to disinfect the water outlet pipeline by flowing.

[0003] However, this will exist certain security risks, when boiling water is discharged, if the body is close to the water outlet of drinking water machine without knowing, it is easy to be boiling water soup injury body. And, the display screen of traditional drinking water machine is always long bright when work is completed, and the system is always executed work, when drinking water machine is used for a long time, display screen and electrical components will work all the time, so as to shorten the working service life of electrical components. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the utility model provides an energy-saving circuit of drinking water machine based on microwave radar.

[0005] The utility model provides a kind of energy-saving circuit of drinking water machine based on microwave radar, it is applied to drinking water machine, the drinking water machine includes: heating piece, the heating piece is provided with drain, the heating piece is used to heat the water of the drinking water machine;Water outlet pipeline, the water inlet of the water outlet pipeline is communicated with the drain of heating piece, to discharge the hot water after heating of the heating piece;Solenoid valve, the solenoid valve is located on the water outlet pipeline, to open or close the water outlet pipeline;The circuit includes:

[0006] Microwave radar, the microwave radar is located in the front side of the drinking water machine, to detect whether person is close;Master control unit, the master control unit is connected with the microwave radar communication, and the control end of the master control unit is electrically connected with the controlled end of the solenoid valve and heating piece.

[0007] Beneficial effects: the utility model discloses a microwave radar is arranged on the front side of water dispenser, when water dispenser is completed work and microwave radar does not sense moving object in range, after a certain time, the system will automatically enter dormancy, and all electrical appliances of water dispenser equipment can run in the minimum power consumption state, when someone approaches water dispenser, microwave radar immediately wakes up the main control unit and makes the main system work, thereby reach the automatic energy -conserving use effect of water dispenser and improve the service life time effect of electrical component. In addition, electromagnetic valve is arranged in the water outlet pipeline, and the control end of main control unit is electrically connected with electromagnetic valve and heating piece controlled end, thereby when main control unit receives the information that human body approaches water dispenser, can close electromagnetic valve and heating piece, avoid scalding the user close. Therefore, the utility model provides a kind of hardware architecture, it is helpful to reduce the power consumption of water dispenser equipment, improve the safety of water dispenser.

[0008] Further, the microwave radar includes a microwave radar chip, a first power module and a second power module;

[0009] The first power module includes a voltage reduction unit and a first capacitor, the input end of the voltage reduction unit is electrically connected with a power supply and the first end of the first capacitor, the output end of the voltage reduction unit is electrically connected with the power supply end of the microwave radar chip, and the ground end of the voltage reduction unit and the second end of the first capacitor are grounded.

[0010] The second power module includes a first zero resistance, and the first zero resistance is used to selectively connect in parallel with the first power module.

[0011] Further, the microwave radar further includes a first resistance and a second capacitor, one end of the first resistance is electrically connected with the output end of the voltage reduction unit, the other end is electrically connected with the first end of the second capacitor and the power supply end of the microwave radar chip, and the second end of the second capacitor is grounded.

[0012] Further, the microwave radar includes a microwave radar chip, a switch unit and an indicator light module;

[0013] One end of the indicator light module is electrically connected with a power supply, the other end is electrically connected with the first end of the switch unit, the second end of the switch unit is electrically connected with the control end of the microwave radar chip, and the third end of the switch unit is grounded.

[0014] Further, the switch unit includes a first triode, a second resistance and a third resistance;

[0015] The collector of the first triode is electrically connected with the negative electrode of the photodiode, the base of the first triode is electrically connected with the first end of the second resistor and the first end of the third resistor, the emitter of the first triode is grounded with the second end of the third resistor, and the second end of the second resistor is electrically connected with the control end of the microwave radar chip.

[0016] Further, the control end of the microwave radar chip comprises a switch control end and an analog quantity adjustment control end, and the microwave radar further comprises a switch control output module and an analog quantity adjustment control output module.

[0017] The switch control output module comprises a fourth resistor, one end of the fourth resistor is electrically connected with the switch control end, and the other end is electrically connected with the second end of the switch unit.

[0018] The analog quantity adjustment control output module comprises a second zero-ohm resistor, and the second zero-ohm resistor is used for selectively connecting the analog quantity adjustment control end and the second end of the switch unit.

[0019] Further, the indicator light module comprises an LED light emitting diode and a fifth resistor, one end of the fifth resistor is electrically connected with a power supply, and the other end is electrically connected with the positive electrode of the LED light emitting diode, and the negative electrode of the LED light emitting diode is electrically connected with the first end of the switch unit.

[0020] Further, the microwave radar comprises a microwave radar chip and a crystal unit, the output end of the microwave radar chip is electrically connected with the input end of the crystal unit, the input end of the microwave radar chip is electrically connected with the output end of the crystal unit, and the ground end of the crystal unit is grounded.

[0021] Further, the microwave radar comprises a microwave radar chip and an antenna, a first impedance unit and a second impedance unit.

[0022] The first impedance unit comprises a fourth capacitor, a fifth capacitor and a first inductor, one end of the fourth capacitor is electrically connected with the output end of the antenna, the other end is electrically connected with the first end of the fifth capacitor and the signal receiving end of the microwave radar chip, the second end of the fifth capacitor is electrically connected with the first end of the first inductor, and the second end of the first inductor is grounded.

[0023] The second impedance unit comprises a sixth capacitor and a second inductor, one end of the sixth capacitor is electrically connected with the input end of the antenna, the other end is electrically connected with the first end of the second inductor and the signal sending end of the microwave radar chip, and the second end of the second inductor is grounded. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0025] Figure 1 A module schematic diagram of a water dispenser provided by the utility model;

[0026] Figure 2 A water path schematic diagram of another water dispenser provided by the utility model;

[0027] Figure 3 A circuit schematic diagram of a microwave radar chip of another water dispenser provided by the utility model;

[0028] Figure 4 A circuit schematic diagram of a first power module provided by the utility model;

[0029] Figure 5 A circuit schematic diagram of a second power module provided by the utility model;

[0030] Figure 6 A partial circuit schematic diagram of a microwave radar of another water dispenser provided by the utility model.

[0031] In the drawing:

[0032] 1, main control unit; 2, microwave radar; 3, heating piece; 31, drain; 4, electromagnetic valve; 41, water inlet; 5, water outlet pipe; 6, filter core; 7, water inlet pipe; 8, pure water pipe. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0034] In this paper, the "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be contained in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the present application, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0036] In the present specification, unless otherwise explicitly specified and limited, the "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "on", "above" and "over" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] As shown in Figure 1 and Figure 2 The utility model provides a kind of water dispenser based on microwave radar 2, it is applied to water dispenser, the water dispenser includes: heating piece 3, the heating piece 3 is provided with drain 31, the heating piece 3 is used to heat the water of the water dispenser;Water outlet pipeline 5, the water inlet 41 of the water outlet pipeline 5 is communicated with the drain 31 of heating piece 3, to discharge the hot water after heating of the heating piece 3;Solenoid valve 4, the solenoid valve 4 is located on the water outlet pipeline 5, to open or close the water outlet pipeline 5;The circuit includes: microwave radar 2, the microwave radar 2 is located on the front side of the water dispenser, to detect whether person is close;Master control unit 1, the master control unit 1 is connected with the microwave radar 2, and the control end of the master control unit 1 is electrically connected with the controlled end of the solenoid valve 4 and heating piece 3.

[0039] The utility model discloses a microwave radar 2 is arranged on the front side of the water dispenser, when the water dispenser completes the work and the microwave radar 2 does not sense the moving object in the range, the system will automatically enter the dormancy state after a certain time, and all electrical appliances of the water dispenser equipment can run in the minimum power consumption state, when someone approaches the water dispenser, the microwave radar 2 immediately wakes up the main control unit 1 to make the main system work, thereby achieving the automatic energy-saving use effect of the water dispenser and improving the service life of the electrical component. In addition, the electromagnetic valve 4 is arranged on the water outlet pipeline 5, and the control end of the main control unit 1 is electrically connected with the electromagnetic valve 4 and the controlled end of the heating element 3, so that when the main control unit 1 receives the information that the human body approaches the water dispenser, the electromagnetic valve 4 and the heating element 3 can be closed to avoid scalding the user close to the water dispenser. Therefore, the utility model provides a hardware architecture, which helps to reduce the power consumption of the water dispenser equipment and improve the safety of the water dispenser.

[0040] Specifically, the water dispenser further comprises a water inlet pipeline 7, a water storage tank / filter element 6 and a pure water pipeline 8, the water inlet pipeline 7 inputs water to the filter element 6, the filter element 6 filters the water to generate pure water to the pure water pipeline 8, the pure water pipeline 8 is communicated with the heating element 3, the heating element 3 heats the pure water to hot water that can be drunk, so that the electromagnetic valve 4 of the water outlet pipeline 5 is opened, the discharge of the hot water is completed, and the above steps can be completed periodically, so that the disinfection function of the water outlet pipeline 5 is achieved. When the water outlet pipeline 5 is disinfected, if the microwave radar 2 detects that the human body approaches, the electromagnetic valve 4 can be closed and the heating element 3 can stop working, so that the purpose of preventing the user from being scalded is achieved.

[0041] Preferably, as shown in the figure, Figures 3-5 The microwave radar 2 comprises a microwave radar 2 chip, a first power module and a second power module; as shown in the figure, Figure 4 The first power module comprises a voltage reduction unit and a first capacitor, the input end of the voltage reduction unit is electrically connected with the power supply and the first end of the first capacitor, the output end of the voltage reduction unit is electrically connected with the power supply end of the microwave radar 2 chip, and the grounding end of the voltage reduction unit and the second end of the first capacitor are grounded; as shown in the figure, Figure 5 The second power module comprises a first zero resistance, and the first zero resistance is used for selectively connecting in parallel with the first power module.

[0042] The VLDOIN port is an output terminal of the power supply. When the first zero-ohm resistor of the second power module is not connected in parallel with the first power module, the voltage after voltage reduction is output by the voltage reduction unit through the VLDOOUT. When the first zero-ohm resistor of the second power module is connected in parallel with the first power module, the voltage is directly output by the VLDOIN port through the VLDOOUT. Therefore, during production, whether to solder one end of the first zero-ohm resistor can be selected according to actual needs, so as to selectively connect in parallel with the first power module. Specifically, the VLDOIN port inputs a 5V voltage, and the voltage reduction unit outputs a 3.3V voltage. The corresponding input voltage is selected according to the actual microwave radar 2 chip model.

[0043] Preferably, as shown in Figure 3 The microwave radar 2 further comprises a first resistor and a second capacitor. One end of the first resistor is electrically connected with the output terminal of the voltage reduction unit, and the other end is electrically connected with the first end of the second capacitor and the power supply terminal of the microwave radar 2 chip. The second end of the second capacitor is grounded. Specifically, the first resistor and the second capacitor constitute a filter circuit, which filters the input current and avoids damage to the chip.

[0044] Preferably, as shown in Figure 3 and Figure 6 The microwave radar 2 comprises a microwave radar 2 chip, a switch unit and an indicator light module.

[0045] One end of the indicator light module is electrically connected with the power supply, and the other end is electrically connected with the first end of the switch unit. The second end of the switch unit is electrically connected with the control terminal of the microwave radar 2 chip, and the third end of the switch unit is grounded. Thus, the on-off of the indicator light is controlled by the switch unit. The VLDOIN port is an output terminal of the power supply, and the OUT port and the FILT-V port can be control terminals of the microwave radar 2 chip.

[0046] Preferably, as shown in Figure 6 The switch unit comprises a first triode, a second resistor and a third resistor.

[0047] The collector of the first triode is electrically connected with the negative electrode of the light emitting diode. The base of the first triode is electrically connected with the first end of the second resistor and the first end of the third resistor. The emitter of the first triode is grounded through the second end of the third resistor. The second end of the second resistor is electrically connected with the control terminal of the microwave radar 2 chip.

[0048] Preferably, the control terminal of the microwave radar 2 chip comprises a switch control terminal and an analog quantity adjustment control terminal. The microwave radar 2 further comprises a switch control output module and an analog quantity adjustment control output module.

[0049] The switch control output module comprises a fourth resistor, one end of the fourth resistor is electrically connected with the switch control end, and the other end is electrically connected with the second end of the switch unit.

[0050] The analog quantity adjustment control output module comprises a second zero-ohm resistor, which is used for selectively connecting the analog quantity adjustment control end and the second end of the switch unit.

[0051] The analog quantity adjustment control end is FILT-V port, and the switch control end is OUT port. When the second zero-ohm resistor connects the analog quantity adjustment control end and the second end of the switch unit, the switch unit can be controlled through the analog quantity adjustment control end. When the second zero-ohm resistor does not connect the analog quantity adjustment control end and the second end of the switch unit, the switch unit can be controlled through the switch control end.

[0052] Preferably, the analog quantity adjustment control output module further comprises a third capacitor, one end of the third capacitor is electrically connected with the analog quantity adjustment control end, and the other end is grounded. The third capacitor can absorb transient voltage spikes and protect sensitive devices.

[0053] Preferably, the indicator light module comprises an LED and a fifth resistor, one end of the fifth resistor is electrically connected with the power supply, and the other end is electrically connected with the positive electrode of the LED, and the negative electrode of the LED is electrically connected with the first end of the switch unit.

[0054] Preferably, the microwave radar 2 comprises a microwave radar 2 chip and a crystal unit, the output end of the microwave radar 2 chip is electrically connected with the input end of the crystal unit, the input end of the microwave radar 2 chip is electrically connected with the output end of the crystal unit, and the ground end of the crystal unit is grounded. The crystal unit provides a unified clock beat for the microwave radar 2 chip, ensuring the synchronization of execution and data transmission with the master control unit 1.

[0055] Preferably, as shown in Figure 3 The microwave radar 2 comprises a microwave radar 2 chip and an antenna, a first impedance unit and a second impedance unit.

[0056] The first impedance unit comprises a fourth capacitor, a fifth capacitor and a first inductor, one end of the fourth capacitor is electrically connected with the output end of the antenna, the other end is electrically connected with the first end of the fifth capacitor and the signal receiving end of the microwave radar 2 chip, the second end of the fifth capacitor is electrically connected with the first end of the first inductor, and the second end of the first inductor is grounded.

[0057] The second impedance unit includes a sixth capacitor and a second inductor, one end of the sixth capacitor is electrically connected with the input end of the antenna, the other end is electrically connected with the first end of the second inductor and the signal transmitting end of the microwave radar 2 chip, and the second end of the second inductor is grounded.

[0058] Wherein, RX-ANT is the output end of the antenna, TX-ANT is the input end of the antenna, the antenna efficiently converts the high-frequency microwave signal generated by the microwave radar 2 chip into directional electromagnetic wave, and radiates it into space, the antenna captures the echo signal reflected by the target and converts it into an electric signal to be transmitted to the microwave radar 2 chip for processing. The first impedance unit and the second impedance unit tune the circuit impedance to match a specific frequency.

[0059] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined; the terms "parallel", "perpendicular" and the like also do not mean that the fittings must be absolutely parallel or perpendicular, but can form a certain angular deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the directions or positional relationships indicated by the terms "center", "lengthwise", "widthwise", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the products of the present application are usually placed during use, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] It can be understood that the meaning of "multiple" herein is at least two, such as two, three, etc., unless specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device. The term "and / or", only describes the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0061] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made according to the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A microwave radar-based energy-saving circuit for a water dispenser, applied to a water dispenser, characterized in that, The water dispenser comprises a heating element provided with a water outlet, the heating element being used for heating water of the water dispenser; a water outlet pipeline having a water inlet communicated with the water outlet of the heating element to discharge heated water of the heating element; and an electromagnetic valve arranged on the water outlet pipeline to open or close the water outlet pipeline; the circuit comprises: a microwave radar arranged on a front side of the water dispenser to detect whether a person approaches; a main control unit in communication connection with the microwave radar, and a control end of the main control unit being electrically connected with controlled ends of the electromagnetic valve and the heating element.

2. A microwave radar based energy saving circuit for a water dispenser as defined in claim 1, characterized in that: The microwave radar comprises a microwave radar chip, a first power module and a second power module. The first power module comprises a voltage reduction unit and a first capacitor, an input end of the voltage reduction unit being electrically connected with a power supply and a first end of the first capacitor, an output end of the voltage reduction unit being electrically connected with a power supply end of the microwave radar chip, and a grounding end of the voltage reduction unit and a second end of the first capacitor being grounded. The second power module comprises a first zero resistance, which is used to selectively connect in parallel with the first power module.

3. A microwave radar based energy saving circuit for a water dispenser as defined in claim 2, characterized in that: The microwave radar further comprises a first resistance and a second capacitor, one end of the first resistance being electrically connected with the output end of the voltage reduction unit, the other end being electrically connected with the first end of the second capacitor and a power supply end of the microwave radar chip, and a second end of the second capacitor being grounded.

4. The energy saving circuit for a water dispenser based on microwave radar according to claim 1, characterized in that: The microwave radar comprises a microwave radar chip, a switch unit and an indicator light module. One end of the indicator light module is electrically connected with a power supply, the other end is electrically connected with a first end of the switch unit, a second end of the switch unit is electrically connected with a control end of the microwave radar chip, and a third end of the switch unit is grounded.

5. A microwave radar based energy saving circuit for a water dispenser as defined in claim 4, characterized in that: The control end of the microwave radar chip comprises a switch control end and an analog quantity adjustment control end, and the microwave radar further comprises a switch control output module and an analog quantity adjustment control output module. The switch control output module comprises a fourth resistance, one end of the fourth resistance being electrically connected with the switch control end, and the other end being electrically connected with the second end of the switch unit. The analog quantity adjustment control output module comprises a second zero resistance, which is used to selectively connect the analog quantity adjustment control end and the second end of the switch unit.

6. A microwave radar based energy saving circuit for a water dispenser as defined in claim 5, wherein, The analog quantity adjustment control output module further comprises a third capacitor, one end of the third capacitor being electrically connected with the analog quantity adjustment control end, and the other end being grounded.

7. A microwave radar based energy saving circuit for a water dispenser as defined in claim 4, wherein: The indicator light module comprises an LED and a fifth resistance, one end of the fifth resistance being electrically connected with a power supply, and the other end being electrically connected with a positive electrode of the LED, a negative electrode of the LED being electrically connected with the first end of the switch unit.

8. The microwave radar based energy saving circuit for a water dispenser as claimed in claim 1, wherein: The microwave radar comprises a microwave radar chip and a crystal oscillator unit, an output end of the microwave radar chip being electrically connected with an input end of the crystal oscillator unit, an input end of the microwave radar chip being electrically connected with an output end of the crystal oscillator unit, and a grounding end of the crystal oscillator unit being grounded.

9. The microwave radar based energy saving circuit for a water dispenser as claimed in claim 1 wherein: The microwave radar comprises a microwave radar chip, an antenna, a first impedance unit and a second impedance unit. The first impedance unit comprises a fourth capacitor, a fifth capacitor and a first inductor, one end of the fourth capacitor is electrically connected with an output end of the antenna, the other end is electrically connected with a first end of the fifth capacitor and a signal receiving end of the microwave radar chip, a second end of the fifth capacitor is electrically connected with a first end of the first inductor, and a second end of the first inductor is grounded; the second impedance unit comprises a sixth capacitor and a second inductor, one end of the sixth capacitor is electrically connected with an input end of the antenna, the other end is electrically connected with a first end of the second inductor and a signal sending end of the microwave radar chip, and a second end of the second inductor is grounded.

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