CN217880050U - Microwave induction control circuit, device and water purifier - Google Patents
Microwave induction control circuit, device and water purifier Download PDFInfo
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- CN217880050U CN217880050U CN202221778255.7U CN202221778255U CN217880050U CN 217880050 U CN217880050 U CN 217880050U CN 202221778255 U CN202221778255 U CN 202221778255U CN 217880050 U CN217880050 U CN 217880050U
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Abstract
The utility model is suitable for the technical field of electronic circuits, and provides a microwave induction control circuit, a device and a water purifier, wherein the circuit comprises a microwave induction module, an on-off module, a signal processing module, a controller and an external function module; the microwave induction module is used for outputting a microwave induction signal when detecting the movement of an object in an induction distance; the on-off module is used for controlling the on-off state between the correspondingly connected microwave sensing module and the signal processing module according to the on-off signal output by the controller; the signal processing module is used for amplifying and processing the received microwave induction signal and then outputting a control signal to the controller; the controller is used for controlling the working state of the external function module when receiving the control signal output by the signal processing module after controlling any on-off module to conduct the correspondingly connected microwave sensing module and the signal processing module. The utility model provides a current water purifier energy-conservation inadequately and intelligent control effectual problem inadequately.
Description
Technical Field
The utility model belongs to the technical field of electronic circuit, especially, relate to a microwave induction control circuit, device and water purifier.
Background
On the market, the water purifier is manual control mostly, and the part contains cell-phone APP and controls, goes out as people and goes far away, if do not pull out the water purifier switch, then the water purifier is in operating condition always, and can't carry out remote control, and the water purifier can keep the temperature under normal operating mode generally this moment, consequently can lose the electric quantity always for be unfavorable for saving the electric quantity.
Meanwhile, the key part of the water purifier on the market is always provided with an indicator lamp, but the electric energy is not saved under the condition that the key part is always on at night. And some water purifier products only have indication icons, so that a user is inconvenient to take water at night.
And also there is the water purifier that has microwave response module in the market, but its microwave response module's induction distance is longer, and sensitivity is too high for just discern in the place far away extremely easily, therefore the use lacks sufficient effective control, can't realize that the water purifier closely carries out intelligent man-machine interaction.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a microwave induction control circuit aims at solving current water purifier energy-conservation inadequately and intelligent control effectual problem inadequately.
The embodiment of the utility model provides a so realize, a microwave response control circuit, the circuit includes:
the system comprises two microwave induction modules with different induction distances, two on-off modules correspondingly connected with the two microwave induction modules, a signal processing module and a controller respectively connected with the two on-off modules, and an external function module connected with the controller;
the microwave sensing module is used for outputting microwave sensing signals when detecting the movement of an object within a sensing distance;
the on-off module is used for correspondingly controlling the on-off state between the microwave induction module and the signal processing module which are correspondingly connected according to the on-off signal output by the controller;
the signal processing module is used for amplifying and processing the received microwave induction signal and then outputting a corresponding control signal to the controller;
the controller is used for correspondingly controlling the working state of the external function module when receiving the control signal output by the signal processing module after controlling any on-off module to conduct the correspondingly connected microwave induction module and the signal processing module.
Further, the microwave induction module comprises:
the oscillation unit is used for generating a high-frequency microwave signal in an oscillation mode;
the transmitting unit is connected with the oscillating unit and is used for transmitting and propagating the high-frequency microwave signal to the outside; and
and the receiving unit is respectively connected with the oscillating unit and the on-off module and used for receiving external reflected signals and outputting microwave induction signals to the on-off module when phase shift frequency exists between the reflected signals and the transmitted high-frequency microwave signals.
Furthermore, the oscillation unit comprises a high-frequency triode, a plurality of filter capacitors connected between the high-frequency triode and the emission unit, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor;
the collecting electrode of the high-frequency triode is connected with a power supply, one end of each filter capacitor and one end of the first resistor, the emitting electrode of the high-frequency triode is connected with one end of the second resistor and the receiving unit, the base electrode of the high-frequency triode is connected with one end of the third resistor, one end of the fourth resistor and one end of the first capacitor, the other end of each filter capacitor is connected with the emitting unit, the other end of the first resistor is connected with the other end of the third resistor, the other end of the first capacitor and one end of the second capacitor, and the other end of the second resistor is grounded with the other end of the second capacitor.
Furthermore, the transmitting unit is a transmitting antenna which is arranged around three sides of the circuit board.
Furthermore, the receiving unit includes a loop-shaped receiving antenna, a third capacitor, a fourth capacitor, a fifth resistor, a fifth capacitor, and a sixth resistor;
one end of the clip-shaped receiving antenna is connected with the oscillating unit, the other end of the clip-shaped receiving antenna is connected with one end of the third capacitor, one end of the fourth capacitor and one end of the fifth resistor, the other end of the fifth resistor is connected with one end of the fifth capacitor, one end of the sixth resistor and the on-off module, and the other end of the third capacitor, the other end of the fourth capacitor, the other end of the fifth capacitor and the other end of the sixth resistor are grounded.
Furthermore, the microwave induction module further comprises a first decoupling antenna and a second decoupling antenna, wherein the first decoupling antenna is connected with a collector of the high-frequency triode, and the second decoupling antenna is connected with a base of the high-frequency triode.
Furthermore, the on-off module comprises a seventh resistor and an optocoupler, one end of the seventh resistor is connected with the controller, the other end of the seventh resistor is connected with an anode of the optocoupler, a cathode of the optocoupler is grounded, a collector of the optocoupler is connected with the microwave induction module, and an emitter of the optocoupler is connected with the signal processing module.
Another embodiment of the present invention further provides a microwave induction control device, which comprises the microwave induction control circuit as described above.
The utility model discloses another embodiment still provides a water purifier, be equipped with on the water purifier as above-mentioned microwave induction control circuit.
The embodiment of the utility model provides a microwave induction control circuit, through setting up two microwave induction modules that the induction distance is inequality, make the microwave induction module who switches to corresponding induction distance when different function demands use, thereby the operating condition of corresponding external function module can be controlled according to the response detection of microwave induction module, make the various different application scenes of better use, avoided when only adopting a microwave induction module because the induction distance is fixed and make the intelligent control that can't satisfy various function demands bring not effective enough problem; simultaneously through setting up the microwave response module, make just the work of the external function module that corresponds of controller control when only microwave response module detects the object motion, other time all control external function module out of work, therefore both can not carry out work and reach the power saving effect when the user is not passing through, can carry out work and convenience of customers' use when the user is passing through again, make intelligent degree high and energy-conservation good, solved current water purifier energy-conservation inadequately and intelligent control is effectual inadequately.
Drawings
Fig. 1 is a schematic block diagram of a microwave sensing control circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an implementation of a microwave sensing control circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a microwave sensing module in a microwave sensing control circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model discloses a set up two microwave response modules that the induction distance is inequality, make the microwave response module that switches over to the induction distance that corresponds when different function demands use, thereby the operating condition of corresponding outside function module can be controlled according to the response detection of microwave response module, make the various different application scenes of better use, avoided when only adopting a microwave response module because the induction distance is fixed and make the intelligent control that can't satisfy various function demands bring not effective enough problem; simultaneously through setting up the microwave response module, make just the work of the outside function module that the controller control corresponds when only microwave response module detects the object motion, other time all controls outside function module out of work, therefore both can not work and reach the power saving effect when the user is not through, can work and convenience of customers' use when the user is through again, make intelligent degree high and energy-conservation good, solved current water purifier energy-conservation inadequately and intelligent control effectual problem inadequately.
Example one
Please refer to fig. 1, which is a schematic block diagram of a microwave sensing control circuit according to a first embodiment of the present invention, the microwave sensing control circuit includes:
the system comprises two microwave induction modules 20 with different induction distances, two on-off modules 30 correspondingly connected with the two microwave induction modules 20, a signal processing module 40 and a controller 50 respectively connected with the two on-off modules 30, and an external function module 60 connected with the controller 50;
the microwave sensing module 20 is configured to output a microwave sensing signal when detecting that an object within a sensing distance moves;
the on-off module 30 is used for correspondingly controlling the on-off state between the correspondingly connected microwave sensing module 20 and the signal processing module 40 according to the on-off signal output by the controller 50;
the signal processing module 40 is configured to amplify and process the received microwave sensing signal and output a corresponding control signal to the controller 50;
the controller 50 is configured to correspondingly control the working state of the external function module 60 when receiving the control signal output by the signal processing module 40 after controlling any one of the on-off modules 30 to conduct the correspondingly connected microwave sensing module 20 and the signal processing module 40.
Wherein, in an embodiment of the utility model, this microwave response control circuit is applied to in the water purifier, and its water purifier mainly used heating keeps functions such as the pilot lamp illumination of temperature invariant, business turn over water and night. Specifically, two microwave sensing modules 20 are disposed on the microwave sensing control circuit, and the two microwave sensing modules 20 respectively use microwaves to detect the motion states of external objects within different sensing distances, so that the two microwave sensing modules 20 can detect the motion states of objects within different distances, such as a distance of 0-5m, and a distance of 0-1m, respectively, through the arrangement of the two microwave sensing modules 20. Meanwhile, the two microwave sensing modules 20 are respectively connected with the corresponding on-off modules 30, so that the on-off modules 30 can receive and transmit signals output by the microwave sensing modules 20, wherein the signals can include microwave sensing signals and other signals, specifically, when the microwave sensing modules 20 detect that an object in a sensing distance moves, the microwave sensing signals are output to the correspondingly connected on-off modules 30, and when the microwave sensing modules 20 do not detect that the object in the sensing distance moves, the other signals are output to the correspondingly connected on-off modules 30.
Wherein, in the utility model discloses an embodiment, be equipped with two on-off modules 30 on this microwave response control circuit, and each on-off module 30 is connected with corresponding microwave response module 20 respectively, and each on-off module 30 still is connected with signal processing module 40 and controller 50 simultaneously, and on-off module 30 is according to the on-off control of controller 50 corresponding control microwave response module 20 and the on-off state between the signal processing module 40 this moment. It should be noted that, since the two on-off modules 30 are connected to the signal processing module 40 together, the controller 50 can control the two on-off modules 30 to be in the off state; the controller 50 can also control one of the two on-off modules 30 to be in an on state, and the other to be in an off state; but the controller 50 cannot control both switching modules 30 to be in a conducting state. At this time, for example, the controller 50 sends a conducting signal to one of the on-off modules 30, so that the on-off module 30 conducts the microwave sensing module 20 and the signal processing module 40 which are correspondingly connected, and the signal output by the microwave sensing module 20 which is correspondingly connected is transmitted to the signal processing module 40; the controller 50 sends a shutdown signal to another on-off module 30, so that the other on-off module 30 shuts down the microwave sensing module 20 and the signal processing module 40 which are correspondingly connected, thereby preventing the signal output by the corresponding microwave sensing module 20 from being transmitted to the signal processing module 40. The corresponding signal processing module 40 can receive the signal transmitted from the turned-on switching module 30.
Wherein, in an embodiment of the utility model, signal processing module 40 is connected with two on-off modules 30 and controller 50 respectively, its signal processing module 40 is used for carrying out signal amplification and handles the corresponding control signal of output to controller 50 with the microwave response signal that receives, that is to say, after controller 50 controls arbitrary on-off module 30 and switches on between the microwave response module 20 that corresponds the connection and signal processing module 40, when microwave response module 20 detects the object motion in the sensing distance when exporting the microwave response signal, its signal processing module 40 can carry out signal amplification and handle the back output control signal to controller 50 with this microwave response signal, its controller 50 detects the object motion in the sensing distance according to the corresponding definite microwave response module 20 of control signal that signal processing module 40 exported. In this embodiment, the signal processing module 40 may be a sensing signal processing integrated circuit, which is a digital-analog hybrid asic including an operational amplifier, a voltage comparator, a state controller, a delay timer, and a blocking timer, so as to amplify and process the microwave sensing signal and output a control signal.
Wherein, in an embodiment of the present invention, this controller 50 is connected with each on-off module 30, signal processing module 40 and external function module 60 respectively, after any on-off module 30 of its controller 50 control switches on with signal processing module 40, when controller 50 receives the control signal that signal processing module 40 outputted, then the operating condition of corresponding control external function module 60, wherein it needs to point out, when controller 50 controls the different on-off modules 30 during operation, then the operating condition of corresponding control different external function modules 60. In particular, in embodiments, the external function module 60 may include at least a display module and a heating and warming module. In the working process of the on-off module 30 connected with the microwave sensing module 20 for sensing the short distance under the control of the controller 50, when the controller 50 receives the control signal output by the signal processing module 40, the controller 50 correspondingly controls the display module to carry out working lighting display; when the controller 50 does not receive the control signal output by the signal processing module 40, the controller 50 correspondingly controls the display module not to work. In the working process of the on-off module 30 connected with the microwave sensing module 20 which is controlled by the controller 50 to sense the long distance, when the controller 50 receives the control signal output by the signal processing module 40, the controller 50 correspondingly controls the heating and heat-preserving module to work, heat and preserve heat; when the controller 50 does not receive the control signal output by the signal processing module 40, the controller 50 correspondingly controls the heating and heat-preserving module not to work. In this embodiment, the controller 50 may be a controller 50 having functions of controlling and Processing signals, such as a single chip, a DSP (Digital Signal Processing), and the like, and is configured according to actual use requirements of a user, which is not limited herein.
In the embodiment, two microwave induction modules with different induction distances are arranged, so that the microwave induction modules with corresponding induction distances are switched to when used with different function requirements, the working states of corresponding external function modules can be controlled according to the induction detection of the microwave induction modules, various different application scenes can be better used, and the problem that the intelligent control is not effective enough due to the fact that the induction distance is fixed when only one microwave induction module is adopted is solved; simultaneously through setting up the microwave response module, make just the work of the outside function module that the controller control corresponds when only microwave response module detects the object motion, other time all controls outside function module out of work, therefore both can not work and reach the power saving effect when the user is not through, can work and convenience of customers' use when the user is through again, make intelligent degree high and energy-conservation good, solved current water purifier energy-conservation inadequately and intelligent control effectual problem inadequately.
Example two
Please refer to fig. 2, which is a schematic circuit diagram of a microwave sensing control circuit according to a second embodiment of the present invention, the second embodiment has a structure substantially the same as that of the first embodiment, and the difference is that in this embodiment, the microwave sensing module 20 includes:
the oscillation unit is used for generating a high-frequency microwave signal in an oscillation mode;
the transmitting unit is connected with the oscillating unit and is used for transmitting and propagating the high-frequency microwave signal to the outside; and
and the receiving unit is respectively connected with the oscillating unit and the on-off module and used for receiving external reflected signals and outputting microwave induction signals to the on-off module when phase shift frequency exists between the reflected signals and the transmitted high-frequency microwave signals.
In this embodiment, a specific description is given by taking one of the microwave sensing modules as an example, and the other microwave sensing module is not described in detail with reference to the drawings, and a specific circuit of the microwave sensing module can be shown in fig. 3, in which, during specific implementation, the oscillation unit includes a high-frequency triode Q1, a plurality of filter capacitors connected between the high-frequency triode Q1 and the emission unit, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, and a second capacitor C2;
the collecting electrode of the high-frequency triode Q1 is connected with a power supply, one end of each filter capacitor and one end of the first resistor R1, the emitting electrode of the high-frequency triode Q1 is connected with one end of the second resistor R2 and the receiving unit, the base electrode of the high-frequency triode Q1 is connected with one end of the third resistor R3, one end of the fourth resistor R4 and one end of the first capacitor C1, the other end of each filter capacitor is connected with the emitting unit, the other end of the first resistor R1 is connected with the other end of the third resistor R3, the other end of the first capacitor C1 and one end of the second capacitor C2, and the other end of the second resistor R2, the other end of the fourth resistor R4 and the other end of the second capacitor C2 are grounded.
Further, the transmitting unit is a transmitting antenna ANT1, and the transmitting antenna ANT1 is arranged around three sides of the circuit board.
Further, the receiving unit includes a loop-type receiving antenna ANT2, a third capacitor C3, a fourth capacitor C4, a fifth resistor R5, a fifth capacitor C5, and a sixth resistor R6; one end of a loop-shaped receiving antenna ANT2 is connected with the oscillation unit, the other end of the loop-shaped receiving antenna ANT2 is connected with one end of a third capacitor C3, one end of a fourth capacitor C4 and one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected with one end of the fifth capacitor C5, one end of a sixth resistor R6 and the on-off module, and the other end of the third capacitor C3, the other end of the fourth capacitor C4, the other end of the fifth capacitor C5 and the other end of the sixth resistor R6 are grounded.
Further, the microwave induction module further comprises a first decoupling antenna ANT3 and a second decoupling antenna ANT4, the first decoupling antenna ANT3 is connected with a collector of the high-frequency triode Q1, and the second decoupling antenna ANT4 is connected with a base of the high-frequency triode Q1.
Specifically, the microwave sensing module is arranged on a circuit board, wherein three sides of the circuit board are provided with transmitting antennas ANT1 in a surrounding manner, so that high-frequency microwave signals can be transmitted through the transmitting antennas ANT1, meanwhile, the transmitting antennas ANT1 cannot form a four-side closed loop, meanwhile, a plurality of filter capacitors are connected between the transmitting antennas ANT1 and the collector of the high-frequency triode Q1, and specifically, five filter capacitors (EC 1, EC2, EC3, EC4 and EC 5) are arranged in the embodiment and used for shielding and filtering signals of other modules which have the same transmitting frequency and come from power crosstalk.
A copper plate is covered near the position corresponding to the high-frequency triode Q1 in the back face of the circuit board for shielding, wherein the capacitance between two layers of copper foils on the circuit board outside a collector of the high-frequency triode Q1, the internal resistance of the high-frequency triode Q1, the parasitic capacitance and the like form an RC oscillation circuit, the oscillation circuit oscillates to generate a high-frequency signal, the high-frequency signal is amplified by the high-frequency triode Q1, and then the high-frequency microwave signal is emitted out through an emitting antenna ANT1 surrounding three sides of the circuit board. If the transmitted high-frequency microwave signal of 2.4-3.2GHz meets a moving object in the sensing distance, the reflected wave has phase change relative to the transmitted wave, at this time, the loop-shaped receiving antenna ANT2 in the receiving unit receives the reflected signal, and if the phase shift frequency exists between the reflected signal and the transmitted signal, the reflected signal is output at a low frequency of about 3-20MHz, that is, the microwave sensing signal is output to the on-off module.
When the device is specifically designed, the greater the strength of the transmitted signal is, the longer the sensing distance is. However, as the frequency of the triac Q1 increases, the gain thereof gradually decreases, the strength of the transmitted signal decreases, and the sensing distance is short. In addition, the higher the characteristic frequency of the high-frequency triode Q1 is, the higher the high-frequency gain is, and the longer the induction distance is, and meanwhile, because the frequency ranges of the 3G and 4G signals and the WIFI signal are 1.8-2.4GHz, the working frequency of the microwave induction module can be avoided as far as possible from the frequency band, so that mutual interference is avoided, and therefore, the transmitting frequency is generally about 2.5GHz as best.
Similarly, at the same frequency, the higher the characteristic frequency of the high-frequency triode Q1 is, the higher the high-frequency gain is, the larger the output amplitude of the received frequency shift signal is, the higher the induction sensitivity is, and the longer the induction distance is. Several factors influence the sensing distance at this time: 1. the larger the circuit board size, the longer the transmitting antenna ANT1, the stronger the transmission signal, and the farther the transmission distance, the farther the sensing distance. 2. The higher the characteristic frequency of the triode Q1, the higher its high frequency gain, and the further the inductive distance. 3. The higher the amplification factor of the operational amplifier in the signal processing module is, the larger the amplitude of the amplified frequency shift signal is. 4. The gain of the high frequency triode Q1 is reduced along with the increase of the frequency when the transmitting frequency is increased, and the power of the transmitting signal is reduced and the receiving sensitivity is also reduced when the frequency point is increased. Therefore, the microwave induction module is effectively arranged and debugged, so that the induction distance can be 3-5 meters when the size of a circuit board using a 9GHz high-frequency triode Q1 is about 20 multiplied by 30 mm. The size of the circuit board is about 30 x 40mm, and the sensing distance can be 8-10 m. The circuit board size is 40 x 50mm, and the farthest sensing distance can reach about 20 meters. If the sensing distance needs to be reduced on the basis, the gain of an operational amplifier in the signal processing module can be adjusted and reduced, or the input driving level can be changed to meet the requirements of different sensing distances.
The reflection signal is received by a loop receiving antenna ANT2 connected to the emitter of the triode Q1, and no copper plate is covered behind the loop receiving antenna ANT2 in order to effectively pass the reflection signal through the loop receiving antenna ANT 2. In addition, as shown in fig. 3, the loop-type receiving antenna ANT2 only needs one sine waveform. It should be noted that the line width of the loop-type receiving antenna ANT2 can be widened appropriately, the waveform amplitude can be increased, and the via holes are densely distributed on the line to improve the strength and sensitivity of the sensing signal, wherein the via holes on the transmitting antenna ANT1 and the loop-type receiving antenna ANT2 arranged on three sides of the circuit board need to be fully plated with tin or chemical gold to enhance the strength of the transmitting and receiving signals. The loop receiving antenna ANT2 influences the receiving strength, so that the received signal can be enhanced by widening the line width of the loop receiving antenna ANT2 or increasing the waveform amplitude. In this embodiment, the waveform amplitude is increased. Therefore, the two microwave sensing modules with different sensing distances in the embodiment realize different receiving intensities mainly by setting different waveform amplitudes, so that different sensing distances in a long distance and a short distance are realized. The first and second decoupling antennas ANT3 and ANT4 are used for capacitive decoupling formed by covering a copper plate on the back of a circuit board.
Furthermore, because the microwave induction control circuit has two on-off modules, and the circuit structures of the on-off modules are completely the same, in this embodiment, a specific description is given by taking one of the on-off modules as an example, and the other on-off module is not repeated in detail, the specific circuit of the on-off module can be as shown in fig. 2, the on-off module includes a seventh resistor R7 and an optocoupler U1, one end of the seventh resistor R7 is connected with the controller, the other end of the seventh resistor R7 is connected with the anode of the optocoupler U1, the cathode of the optocoupler U1 is grounded, the collector of the optocoupler U1 is connected with the microwave induction module, and the emitter of the optocoupler U1 is connected with the signal processing module.
Further, as shown in fig. 2, the signal processing module specifically includes a type bis 0001 sensing signal processing integrated chip and a peripheral circuit connected to the chip, which can amplify and process the microwave sensing signal output by the microwave sensing module, and correspondingly output the microwave sensing signal to the controller through an output port thereof, and the specific peripheral circuit of the signal processing module is shown in fig. 2 and will not be described herein.
The external function modules are mainly an indication module and a heating module connected to the controller, and the specific circuit structure and principle thereof refer to the prior art and are not described herein again.
In a specific working process, referring to fig. 2, a fifth pin of the controller can output an adjustable voltage of 3.3-5V to provide a working power supply for the microwave sensing module and the signal processing module, wherein the level of the adjustable voltage can affect the strength of a signal, so as to affect the length of the sensing distance of the microwave sensing module, and at this time, the accuracy of controlling the sensing distance is correspondingly realized by controlling the adjustable voltage. And the fourth pin of the controller is connected with the signal output end of the signal processing module, whether the microwave induction module detects the motion of the object is determined according to the corresponding determination of the output level of the signal output end of the signal processing module, specifically, when the microwave induction module detects that the object moves, the fourth pin of the controller receives a high level signal, otherwise, the fourth pin receives a low level signal. And the third pin and the second pin of controller are connected with the on-off module that corresponds respectively, and when the third pin of controller or second pin output high level this moment, then opto-coupler U1 switches on to make microwave response module and signal processing module switch on, therefore the controller is through the specific microwave response module that the corresponding control of output level state of control third pin or second pin is currently connected with signal processing module, thereby control what the response that uses at present is switching on of the microwave response module of remote detection or switching on of the microwave response module of closely detecting. In this embodiment, the third pin of the controller is used to control the on-off state between the microwave sensing module and the signal processing module for short-distance sensing, and the second pin of the controller is used to control the on-off state between the microwave sensing module and the signal processing module for long-distance sensing.
Therefore, particularly, when the water purifier is in the night mode, the water purifier is generally in a kitchen position, and a user activity place is generally in a living room/bedroom, but the indicator lamp of the water purifier is always on at midnight, so that electric energy is wasted. At this moment, the microwave induction module with smaller induction distance is conducted with the signal processing module by controlling the on-off module, so that the indicating lamp can be lighted up when someone gets nearby water, and the effects of power saving and intelligence are achieved. The specific implementation process is that after a night mode is set by a program of the water purifier, the output of a third pin of a controller of the water purifier is a high level, an optocoupler in an on-off module connected with the third pin is switched on at the moment, the output of a second pin of the controller is a low level, and the optocoupler in the on-off module connected with the second pin is switched off at the moment. Therefore, the close-range detection mode is started at the moment, the specific actual precision can be controlled by the voltage of the fifth pin of the adjustment controller, the controller is close to the water purifier at night, the water purifier walks at a first preset distance (such as 1 m), water taking is determined to be about to take by people, the corresponding control indicator lamp of the controller is turned on at the moment, the lamp is turned on when water is taken, the lamp is turned off after water is taken, the power saving effect is achieved by not working when a user does not pass through, and the user can use the water purifier by working when the user passes through, so that the intelligent degree is high, and the energy saving performance is good.
When the water purifier is in a working mode, the water purifier is generally in a kitchen position, a user activity place generally can be in a living room/a bedroom, the user needs to drink hot water in winter, the water purifier has a heat preservation function correspondingly, and electric energy is wasted by preserving heat all the time. Meanwhile, the power-off is often forgotten when the user is not at home in holiday travel, and a lot of electric energy is wasted due to the heat preservation function. When the user is at home, the user can walk at home more or less, the long-distance microwave induction is started, when the user moves in a monitoring range (for example, 3-5 m), the water purifier judges that someone is at home, and the controller controls the starting of the heat preservation function. And when the user goes out and no moving object is detected within a preset time (such as 1-2 hours), the user is judged not to be at home, and the heat preservation function is cancelled. The specific implementation process is that after the program of the water purifier sets a normal mode, the output of a third pin of the controller is at a low level, the optocoupler in the on-off module connected with the third pin is closed at the moment, the output of a second pin of the controller is at a high level, and the optocoupler in the on-off module connected with the second pin is switched on at the moment. Therefore, the remote detection mode is started at this time, the specific actual precision can also be controlled by adjusting the voltage of the fifth pin of the controller, and at this time, when the user moves within a second preset distance (for example, 3-5 m) from the water purifier, the heat preservation function is always started. When a user goes out, the user does not detect the movement of an object within a preset time (for example, 10-20 hours), the user is judged to be not at home at the moment, the long-distance microwave induction mode is not changed, but the normal mode of the water purifier is changed into the vacation mode, and the heat preservation function is correspondingly cancelled, so that the heat preservation can be carried out when the user exists, and the heat preservation can be cancelled when the user goes out, so that the power saving effect is achieved, the intelligent degree is high, and the energy saving performance is good.
EXAMPLE III
The utility model discloses the third embodiment still provides a microwave response controlling means, and the device includes the microwave response control circuit that provides in above-mentioned embodiment.
The microwave induction control device is provided with two microwave induction modules with different induction distances, so that the microwave induction modules are switched to the microwave induction modules with corresponding induction distances when used according to different function requirements, the working state of the corresponding external function module can be controlled according to the induction detection of the microwave induction modules, various different application scenes can be better used, and the problem that the intelligent control is not effective enough due to the fact that the induction distance is fixed when only one microwave induction module is adopted is solved; simultaneously through setting up the microwave response module, make just the work of the outside function module that the controller control corresponds when only microwave response module detects the object motion, other time all controls outside function module out of work, therefore both can not work and reach the power saving effect when the user is not through, can work and convenience of customers' use when the user is through again, make intelligent degree high and energy-conservation good, solved current water purifier energy-conservation inadequately and intelligent control effectual problem inadequately.
Example four
The fourth embodiment of the present invention further provides a water purifier, wherein the water purifier is provided with the microwave sensing control circuit according to the above embodiment, and as described with reference to the above embodiment, the water purifier provided by this embodiment is configured with two microwave sensing modules with different sensing distances, so that the water purifier can be switched to the microwave sensing module with the corresponding sensing distance when used with different functional requirements, thereby controlling the working state of the corresponding external functional module according to the sensing detection of the microwave sensing module, so as to better use various different application scenarios, and avoid the problem that the intelligent control caused by the fact that the various functional requirements cannot be met due to the fixed sensing distance when only one microwave sensing module is adopted; simultaneously through setting up the microwave response module, make just the work of the external function module that corresponds of controller control when only microwave response module detects the object motion, other time all control external function module out of work, therefore both can not carry out work and reach the power saving effect when the user is not passing through, can carry out work and convenience of customers' use when the user is passing through again, make intelligent degree high and energy-conservation good, solved current water purifier energy-conservation inadequately and intelligent control is effectual inadequately.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A microwave induction control circuit, the circuit comprising:
the microwave induction system comprises two microwave induction modules with different induction distances, two on-off modules correspondingly connected with the two microwave induction modules, a signal processing module and a controller respectively connected with the two on-off modules, and an external function module connected with the controller;
the microwave sensing module is used for outputting microwave sensing signals when detecting the movement of an object within a sensing distance;
the on-off module is used for correspondingly controlling the on-off state between the microwave induction module and the signal processing module which are correspondingly connected according to the on-off signal output by the controller;
the signal processing module is used for amplifying and processing the received microwave induction signal and then outputting a corresponding control signal to the controller;
the controller is used for correspondingly controlling the working state of the external function module when receiving the control signal output by the signal processing module after controlling any on-off module to conduct the correspondingly connected microwave induction module and the signal processing module.
2. The microwave sensing control circuit of claim 1, wherein the microwave sensing module comprises:
the oscillation unit is used for generating a high-frequency microwave signal in an oscillation mode;
the transmitting unit is connected with the oscillating unit and is used for transmitting and propagating the high-frequency microwave signal to the outside; and
and the receiving unit is respectively connected with the oscillating unit and the on-off module and used for receiving external reflected signals and outputting microwave induction signals to the on-off module when phase shift frequency exists between the reflected signals and the transmitted high-frequency microwave signals.
3. The microwave induction control circuit according to claim 2, wherein the oscillating unit comprises a triode, a plurality of filter capacitors connected between the triode and the transmitting unit, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor;
the collecting electrode of the high-frequency triode is connected with a power supply, one end of each filter capacitor and one end of the first resistor, the emitting electrode of the high-frequency triode is connected with one end of the second resistor and the receiving unit, the base electrode of the high-frequency triode is connected with one end of the third resistor, one end of the fourth resistor and one end of the first capacitor, the other end of each filter capacitor is connected with the emitting unit, the other end of the first resistor is connected with the other end of the third resistor, the other end of the first capacitor and one end of the second capacitor, and the other end of the second resistor is grounded with the other end of the second capacitor.
4. The microwave induction control circuit of claim 2, wherein the transmitting unit is a transmitting antenna disposed around three sides of the circuit board.
5. The microwave induction control circuit of claim 2, wherein the receiving unit comprises a loop-shaped receiving antenna, a third capacitor, a fourth capacitor, a fifth resistor, a fifth capacitor and a sixth resistor;
one end of the clip-shaped receiving antenna is connected with the oscillating unit, the other end of the clip-shaped receiving antenna is connected with one end of the third capacitor, one end of the fourth capacitor and one end of the fifth resistor, the other end of the fifth resistor is connected with one end of the fifth capacitor, one end of the sixth resistor and the on-off module, and the other end of the third capacitor, the other end of the fourth capacitor, the other end of the fifth capacitor and the other end of the sixth resistor are grounded.
6. The microwave sensing control circuit of claim 3 wherein the microwave sensing module further comprises a first decoupling antenna coupled to the collector of the triac and a second decoupling antenna coupled to the base of the triac.
7. The microwave induction control circuit according to claim 1, wherein the on-off module comprises a seventh resistor and an optocoupler, one end of the seventh resistor is connected to the controller, the other end of the seventh resistor is connected to an anode of the optocoupler, a cathode of the optocoupler is grounded, a collector of the optocoupler is connected to the microwave induction module, and an emitter of the optocoupler is connected to the signal processing module.
8. A microwave induction control device, characterized in that the microwave induction control device comprises a microwave induction control circuit according to any one of claims 1-7.
9. A water purifier characterized in that the water purifier is provided with the microwave induction control circuit according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221778255.7U CN217880050U (en) | 2022-07-11 | 2022-07-11 | Microwave induction control circuit, device and water purifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221778255.7U CN217880050U (en) | 2022-07-11 | 2022-07-11 | Microwave induction control circuit, device and water purifier |
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| CN217880050U true CN217880050U (en) | 2022-11-22 |
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