CN209448656U - A kind of physiotherapy beauty radio circuit - Google Patents
A kind of physiotherapy beauty radio circuit Download PDFInfo
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- CN209448656U CN209448656U CN201920550966.0U CN201920550966U CN209448656U CN 209448656 U CN209448656 U CN 209448656U CN 201920550966 U CN201920550966 U CN 201920550966U CN 209448656 U CN209448656 U CN 209448656U
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Abstract
The utility model embodiment discloses a kind of physiotherapy beauty radio circuit, comprising: oscillating circuit, low-voltage power circuit, power supply input circuit, half-bridge drive circuit, output circuit, control circuit and feed circuit；Wherein, the power supply input circuit accesses alternating current；The low-voltage power circuit is connect with the power supply input circuit, for generating low-tension supply；The oscillating circuit is for generating stable square-wave signal；The square-wave signal is for driving the half-bridge drive circuit；The signal that the half-bridge drive circuit generates becomes sine wave after LC resonance；The control circuit is used to control the switch of entire circuit；The feed circuit is used for the electric current of detection input, and according to the current control output end of input terminal.Physiotherapy beauty radio circuit disclosed in the utility model embodiment directly uses mains-supplied, stable frequency is generated by oscillating circuit, peripheral circuit is simple, can export sine wave, eliminates security risk by feed circuit.
Description
Technical field
The utility model embodiment is related to radio frequency arts, and in particular to a kind of physiotherapy beauty radio circuit.
Background technique
With the development of electronic technology with the improvement of people's living standards, electronic technology is in fields such as beauty, body beautification, healths
The hair screen at full speed obtained.Radio-frequency technique is widely applied what beauty, health field obtained.Radio-frequency technique acts on human body body
On system in, in order to realize safety and the comfort of system, need by act on human body to pressure and electric current
Real-time sampling and successional pulse realize the high-precision stabilization of voltage and electric current and the comfort level of human body sensing.
The mode of pulse transformer is usually used to achieve the effect that increase voltage in existing technology, and existing technology is
Single-ended or push pull mode, one end are power supply (VCC), and the other end is pulse frequency square wave, by adjust the voltage of power end come
Control output energy size.The on-off of the output of radio frequency is controlled by adjusting pulse output and the closing of the other end.
But the prior art has 5 points of deficiencies, one is the stability influence output voltage of input voltage, the second is output
Frequency and impulse waveform scrambling, the third is peripheral circuit is complicated, hardware volume occupation rate height.The fourth is output waveform one
As be clutter or square wave, it is very poor to the comfort of human body.The fifth is output end, without feedback, output end can not be timely with input terminal
It effectively contacts, there are security risks.
Utility model content
For this purpose, the utility model embodiment provides a kind of physiotherapy beauty radio circuit, solved with solution or part existing
Above-mentioned technical problem in technology.
To achieve the goals above, the utility model embodiment provides a kind of physiotherapy beauty radio circuit, comprising: oscillation electricity
Road, low-voltage power circuit, power supply input circuit, half-bridge drive circuit, output circuit, control circuit and feed circuit；
Wherein, the power supply input circuit accesses alternating current；The low-voltage power circuit is connect with the power supply input circuit,
For generating low-tension supply；
The oscillating circuit is for generating stable square-wave signal；The square-wave signal is for driving the half-bridge driven electricity
Road；The signal that the half-bridge drive circuit generates becomes sine wave after LC resonance；
The control circuit is used to control the switch of entire circuit；
The feed circuit is used for the electric current of detection input, and according to the current control output end of input terminal.
Further, further includes:
Three-terminal voltage-stabilizing circuit；
The three-terminal voltage-stabilizing circuit is connect with the power supply input circuit, is used for burning voltage.
Further, further includes:
High/low-voltage isolation circuit；
The high/low-voltage isolation circuit is connect with the oscillating circuit and the half-bridge drive circuit respectively, for circuit every
From.
Further, the oscillating circuit includes crystal oscillator and shaping circuit；
The crystal oscillator is connect with the shaping circuit, and the frequency of oscillation that the crystal oscillator generates is carried out by the shaping circuit
Steadily square wave is formed after multiple shaping.
Further, the low-voltage power circuit includes bridge rectifier, filter circuit and transformer composition；
High Level AC Voltage forms high voltage direct current, high voltage direct current warp after the rectification circuit and the filter circuit
It crosses the transformer and forms low-voltage DC.
Further, the power supply input circuit includes insurance choking-winding, bridge rectifier, filter circuit, high pressure
Capacitor and false load resistance.
Further, the output circuit includes transformer, inductance and capacitor.
Further, the control circuit includes optical coupler, resistance and triode.
Further, the feed circuit includes current detector, bridge rectifier and analog-digital converter.
Further, the high/low-voltage isolation circuit includes totem-pote circuit and retarder.
Physiotherapy beauty radio circuit disclosed in the utility model embodiment is directly used mains-supplied, is generated by oscillating circuit
Stable frequency, peripheral circuit is simple, can export sine wave, eliminates security risk by feed circuit.
Detailed description of the invention
It, below will be to reality in order to illustrate more clearly of the embodiments of the present invention or technical solution in the prior art
It applies mode or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that attached in being described below
Figure is only exemplary, for those of ordinary skill in the art, without creative efforts, can be with
It is extended according to the attached drawing of offer and obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the utility model enforceable qualifications, therefore does not have technology
On essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the utility model institute energy
Under the effect of generation and the purpose that can reach, it should all still fall in the revealed technology contents of the utility model and obtain the model that can cover
In enclosing.
Fig. 1 is physiotherapy beauty radio frequency structure schematic diagram provided by the embodiment of the utility model；
Fig. 2 is feedback circuit structure schematic diagram provided by the embodiment of the utility model.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily, it is clear that described embodiment is
The utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the utility model protection
Range.
Fig. 1 is physiotherapy beauty radio frequency structure schematic diagram provided by the embodiment of the utility model, as shown in Figure 1, this reality
A kind of physiotherapy beauty radio circuit is provided with new embodiment, comprising: oscillating circuit A, low-voltage power circuit B, power input electricity
Road C, half-bridge drive circuit D, output circuit E, control circuit F and feed circuit.It should be understood that feed circuit is not in Fig. 1
In show.Fig. 2 is feedback circuit structure schematic diagram provided by the embodiment of the utility model.
Wherein, the power supply input circuit accesses alternating current；The low-voltage power circuit is connect with the power supply input circuit,
For generating low-tension supply；
The oscillating circuit is for generating stable square-wave signal；The square-wave signal is for driving the half-bridge driven electricity
Road；The signal that the half-bridge drive circuit generates becomes sine wave after LC resonance；
The control circuit is used to control the switch of entire circuit；
The feed circuit is used for the electric current of detection input, and according to the current control output end of input terminal.
Further, the physiotherapy beauty radio circuit further include:
Three-terminal voltage-stabilizing circuit；
The three-terminal voltage-stabilizing circuit is connect with the power supply input circuit, is used for burning voltage.
Further, the physiotherapy beauty radio circuit further include:
High/low-voltage isolation circuit；
The high/low-voltage isolation circuit is connect with the oscillating circuit and the half-bridge drive circuit respectively, for circuit every
From.
Further, the oscillating circuit includes crystal oscillator and shaping circuit；
The crystal oscillator is connect with the shaping circuit, and the frequency of oscillation that the crystal oscillator generates is carried out by the shaping circuit
Steadily square wave is formed after multiple shaping.
Further, the low-voltage power circuit includes bridge rectifier, filter circuit and transformer composition；
High Level AC Voltage forms high voltage direct current, high voltage direct current warp after the rectification circuit and the filter circuit
It crosses the transformer and forms low-voltage DC.
Further, the power supply input circuit includes insurance choking-winding, bridge rectifier, filter circuit, high pressure
Capacitor and false load resistance.
Further, the output circuit includes transformer, inductance and capacitor.
Further, the control circuit includes optical coupler, resistance and triode.
Further, the feed circuit includes current detector, bridge rectifier and analog-digital converter.
Further, the high/low-voltage isolation circuit includes totem-pote circuit and retarder.
Specifically, the utility model embodiment improves and optimizes for the problems of the prior art, and input terminal is straight
Input alternating current (AC220V) is connect to power to main circuit；It is unified and stable to can reach frequency for the frequency that output frequency is generated by crystal oscillator；
Peripheral circuit is simple, and cost reduces；Output waveform is the sine wave of 1MHZ；After carrying out real-time sampling feedback to the electric current of input,
Output end can effectively be fed back after analog-digital converter ADC conversion, be reached once exporting non-loaded or pacifying
While full hidden danger, stop output at once.
The utility model embodiment passes through the simple controller (as soon as only needing to the voltage of optocoupler 5V) in periphery, energy side
Just the effectively output of control energy.Signal controls the output end of the one of NOT gate of CD4069, then after light-coupled isolation
Reach the control effect for rear end by the input terminal of CD4073.Light-coupled isolation afterpulse signal is undamped, there have to be stronger
Anti-interference transmission, improves the reception and reliability of control chip, while also improving the accuracy of control energy.
The key point of the utility model embodiment includes, and one, signal controlled to control by the low pressure (3.3V~5V) of periphery
Make the output of this circuit.The power of output is controlled using simple PWM.Control mode is not only convenient but also safe in this way, together
It is the wire core number of reduced control.Two, circuit directly inputs AC85V~AC220V, and by current detector in real time to this
Circuit carries out current sample tracking, while output end is non-loaded or security risk occurs, stops output at once.Three, defeated
Waveform is the sine wave of 1MHZ out, and the prior art is generally square wave or clutter, and frequency is generally 480KHZ.
Each sub-circuit is illustrated separately below.
1, oscillating circuit:
Oscillating circuit is completed by CD4069 (NOT gate) and 1MHZ crystal oscillator and two starting of oscillation capacitors, after multiple shaping.It is defeated
The square wave of duty ratio 50% out, after after the shaping of R14 and C14, R15 and C15, export the square wave of 40% duty ratio to
To the two of them foot position of CD4073 (three outputs and door), the square wave of 1, the 2 feet input of CD4073 and the square wave of 12,13 feet input
In 90 degree of paraphase, so far oscillating part circuit completes the square wave of a defeated 1MHZ.Resistance and electricity is usually used in existing technology
Reach waveform output after the calculus circuit of appearance after CD4069 shaping, its output frequency of such circuit is extremely unstable
Property, it is higher or relatively low because the error of capacitance resistance causes the error of output frequency very big.
2, low-voltage power circuit:
Low-voltage power circuit, using the switching power circuit of a 15V/1A, AC1 and AC2 connect the AC85V of mainboard~
AC240V input, DC voltage is given to 1 end of power transformer armature winding, power transformer after bridge rectifier, filtering
5,6,7,8 feet of another chip termination VIPer12a of armature winding, 3 feet receive feed circuit, power transformer secondary windings
The DC power supply that a 15V is exported after D3 half-wave integer and CE3 filtering is exported, by AL431 electronic feedback through optocoupler
3 feet that chip VIPer12a is fed back to after PL817 reach 15V Switching Power Supply and stablize output.The prior art generally uses transformer
Power supply, spread of voltage lead to the output end voltage of transformer not because feeder ear input voltage is not stable AC220V
Stablize.And the alternating voltage for being higher than 15V is exported with transformer, then after rectifying and wave-filtering, after three-terminal voltage-stabilizing or DC/
DC does so the former and exports that electric current is inadequate, and the latter is a kind of drawback to the increase of cost and the increase of prototype part.
3, three-terminal voltage-stabilizing circuit:
The circuit is common voltage regulator circuit, its advantage is that circuit is simple, the disadvantage is that output electric current is few, and inputs and exports
Voltage difference cannot be excessively high.Because in this technology, we only use low current, so with this voltage regulation way.
4, power supply input circuit:
After alternating current AC220V input, after the components such as insurance choking-winding, after being input to bridge rectifier, by filtering
A DC voltage is exported afterwards.Power end connects two resistance and does false load, can consume high-voltage capacitance in the moment of power-off
The voltage of the inside.If output voltage is AC110V, then JP1 is needed to be shorted, the program does not have power supply power supply range extensively and not
Need transformer or Switching Power Supply that voltage is reduced, two kinds of advantages.
5, high/low-voltage isolation circuit:
High/low-voltage isolation circuit is traditional driving method, and working method is that the square wave of CD4073 output passes through two
After totem-pote circuit, the induced electromotive force of two-way reverse phase is generated to retarder, drives the half-bridge drive circuit, its advantage is again
It is safe and reliable in high and low voltage isolation.
6, half-bridge drive circuit:
Half-bridge drive circuit is mature driving method, its characteristic is that driving force is strong, and power is big, and energy efficiency conversion rate is high,
It is generally used for the circuit that driving voltage is relatively high or output power is bigger.By the induction for two reverse phases that isolation module generates
Electromotive force can frequently control the turn-on deadline of two switching tubes in turn, reach switching effect, wherein voltage is by C5 electricity all the way
Hold after transformer and L1 inductance using this NMOS tube of Q2 to SGND.Another way voltage passes through again by this NMOS tube of Q1
It crosses after L1 inductance and transformer using C6 capacitor to SGND.
7, output circuit:
The turn ratio of transformer in output circuit is that the armature winding one of 1:1 transformer terminates the electricity after rectifying and wave-filtering
The output end in source, another termination half-bridge drive circuit is followed by the other end of transformer through L1.Wherein L1 and L2 is that parameter is complete
Consistent two inductance, the effect of C7 are to form LC resonance circuit with L1.Its advantage is to select our frequencies of setting to pass through,
In the circuit, other than LC parallel connection part, the impedance variations of other parts almost do not influence energy consumption.
8, control circuit:
In control circuit, as long as soon as the input terminal of OP1 optocoupler gives its specified 3V voltage difference, it can control output
End inputs directly proportional to the relationship of output.If PWM output is high level, OP1 output network also exports high level, similarly such as
Fruit PWM output is low level, and what OP1 exported network output is also low level.The OP1 of the circuit connects 13 feet of CD4069, through 12
Anti-phase output controls the on-off of two group of three input and door of CD4073 to CD4073 after foot.The circuit be PWM be high level when,
Integrated circuit output is closed, and when PWM output is low level, integrated circuit output is opened.
9, feed circuit:
ZT1 is current detector, no-load voltage ratio 1000:1 in feed circuit.Specified input current is 5A, rated output electricity
Stream is 5mA.The 1 of ZT1,2 feet series connection AC220V after input to mainboard, when electric current can generate induced current through ZT1 after ZT1
The output of 3,4 feet, by that can generate the voltage changed with input current variation after bridge type rectifying and wave-filtering, our peripheries are electric
As long as road, which is converted into measured value with analog-digital converter ADC, achievees the effect that control output end.
Physiotherapy beauty radio circuit disclosed in the utility model embodiment is directly used mains-supplied, is generated by oscillating circuit
Stable frequency, peripheral circuit is simple, can export sine wave, eliminates security risk by feed circuit.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (10)
1. a kind of physiotherapy beauty radio circuit characterized by comprising oscillating circuit, low-voltage power circuit, power input electricity
Road, half-bridge drive circuit, output circuit, control circuit and feed circuit；
Wherein, the power supply input circuit accesses alternating current；The low-voltage power circuit is connect with the power supply input circuit, is used for
Generate low-tension supply；
The oscillating circuit is for generating stable square-wave signal；The square-wave signal is for driving the half-bridge drive circuit；
The signal that the half-bridge drive circuit generates becomes sine wave after LC resonance；
The control circuit is used to control the switch of entire circuit；
The feed circuit is used for the electric current of detection input, and according to the current control output end of input terminal.
2. physiotherapy beauty radio circuit according to claim 1, which is characterized in that further include:
Three-terminal voltage-stabilizing circuit；
The three-terminal voltage-stabilizing circuit is connect with the power supply input circuit, is used for burning voltage.
3. physiotherapy beauty radio circuit according to claim 1, which is characterized in that further include:
High/low-voltage isolation circuit；
The high/low-voltage isolation circuit is connect with the oscillating circuit and the half-bridge drive circuit respectively, is isolated for circuit.
4. physiotherapy beauty radio circuit according to claim 1, which is characterized in that the oscillating circuit include crystal oscillator and
Shaping circuit；
The crystal oscillator is connect with the shaping circuit, and the frequency of oscillation that the crystal oscillator generates carries out multiple by the shaping circuit
Steadily square wave is formed after shaping.
5. physiotherapy beauty radio circuit according to claim 1, which is characterized in that the low-voltage power circuit includes bridge-type
Rectification circuit, filter circuit and transformer composition；
High Level AC Voltage forms high voltage direct current after the rectification circuit and the filter circuit, and high voltage direct current passes through institute
It states transformer and forms low-voltage DC.
6. physiotherapy beauty radio circuit according to claim 1, which is characterized in that the power supply input circuit includes insurance
Choking-winding, bridge rectifier, filter circuit, high-voltage capacitance and false load resistance.
7. physiotherapy beauty radio circuit according to claim 1, which is characterized in that the output circuit include transformer,
Inductance and capacitor.
8. physiotherapy beauty radio circuit according to claim 1, which is characterized in that the control circuit include optical coupler,
Resistance and triode.
9. physiotherapy beauty radio circuit according to claim 1, which is characterized in that the feed circuit includes current detecting
Device, bridge rectifier and analog-digital converter.
10. physiotherapy beauty radio circuit according to claim 3, which is characterized in that the high/low-voltage isolation circuit includes
Totem-pote circuit and retarder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550966.0U CN209448656U (en) | 2019-04-22 | 2019-04-22 | A kind of physiotherapy beauty radio circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550966.0U CN209448656U (en) | 2019-04-22 | 2019-04-22 | A kind of physiotherapy beauty radio circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209448656U true CN209448656U (en) | 2019-09-27 |
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ID=68034698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920550966.0U Active CN209448656U (en) | 2019-04-22 | 2019-04-22 | A kind of physiotherapy beauty radio circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209448656U (en) |
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2019
- 2019-04-22 CN CN201920550966.0U patent/CN209448656U/en active Active
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