CN210724559U - Full-voltage variable-frequency input sine half-wave therapeutic apparatus control circuit - Google Patents
Full-voltage variable-frequency input sine half-wave therapeutic apparatus control circuit Download PDFInfo
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- CN210724559U CN210724559U CN201921415632.9U CN201921415632U CN210724559U CN 210724559 U CN210724559 U CN 210724559U CN 201921415632 U CN201921415632 U CN 201921415632U CN 210724559 U CN210724559 U CN 210724559U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a sinusoidal half-wave therapeutic instrument control circuit of full voltage frequency conversion input, include: the input unit, the rectification filtering unit steps up the rectification unit, sinusoidal half-wave production unit and output unit, input unit, rectification filtering unit, the rectification unit that steps up, sinusoidal half-wave production unit and output unit connect gradually, output unit passes through two way sinusoidal half-wave signals drive the magnetism respectively and shake the head work soon, the utility model discloses a full voltage frequency conversion input sinusoidal half-wave therapeutic instrument control circuit simple structure can reduce the consumption of circuit, raises the efficiency, reduces the fault rate of circuit.
Description
Technical Field
The utility model relates to a frequency conversion therapeutic instrument technical field, in particular to full voltage frequency conversion input sine half-wave therapeutic instrument control circuit.
Background
Chinese utility model patent with patent number CN208143095U discloses a full voltage frequency conversion input sine half-wave therapeutic apparatus, but it has following shortcoming: 1. the circuit is too complex, inconvenient to produce and prone to failure; 2. the current harmonic wave is large, and the pollution to a power grid is large; 3. the efficiency is low, and the PFC value power factor is lower by about 0.5.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a full voltage frequency conversion input sine half-wave therapeutic instrument control circuit to solve among the prior art full voltage frequency conversion input sine half-wave therapeutic instrument and easily take place trouble, the inefficiency scheduling problem.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the utility model provides a full voltage frequency conversion input sine half-wave therapeutic instrument control circuit, includes:
the input unit is used for accessing an alternating current power supply of 85V-265V;
the input end of the rectifying and filtering unit is connected with the input unit and is used for rectifying and filtering the input voltage and outputting direct-current voltage;
the input end of the boosting rectifying unit is connected with the output end of the rectifying and filtering unit and is used for boosting and rectifying the direct-current voltage output by the rectifying and filtering unit and outputting high-voltage direct current;
the input end of the sine half-wave production unit is connected with the output end of the boost rectification unit and is used for generating two paths of sine half-wave signals;
the output unit is connected with the output end of the sine half-wave production unit and is used for respectively driving the magnetic vibration head and the rotary vibration head to work through the two paths of sine half-wave signals;
the boost rectifying unit comprises a PFC boost circuit, an LLC half-bridge resonant circuit, a voltage frequency control circuit and a direct-current voltage isolation output circuit, the PFC boost circuit, the LLC half-bridge resonant circuit, the voltage frequency control circuit and the direct-current voltage isolation output circuit are sequentially connected, the input end of the PFC boost circuit is connected with the output end of the rectifying and filtering unit, and the output end of the direct-current voltage isolation output circuit is connected with the input end of the sine half-wave production unit.
Optionally: the rectifying and filtering unit comprises an EMC circuit and a rectifying and filtering circuit, the input end of the EMC circuit is connected with the input unit, the output end of the EMC circuit is connected with the input end of the rectifying and filtering circuit, and the output end of the rectifying and filtering circuit is connected with the input end of the PFC boosting circuit.
Optionally: the boost rectifying unit further comprises a feedback circuit, the input end of the feedback circuit is connected with the direct-current voltage isolation output circuit, and the output end of the feedback circuit is connected with the voltage frequency control circuit.
Optionally: sinusoidal half-wave production unit includes SPWM signal generator, full-bridge switch control circuit, keeps apart buck circuit and power frequency feedback network circuit, full-bridge switch control circuit's input is connected boost rectifier unit's output, full-bridge switch control circuit's output is connected respectively keep apart buck circuit and power frequency feedback network circuit, keep apart buck circuit's output and connect output unit, power frequency feedback network circuit's output is connected SPWM signal generator, SPWM signal generator's output is connected full-bridge switch control circuit.
Optionally: the boost rectifying unit further comprises a first auxiliary power supply, and the first auxiliary circuit is respectively connected with the PFC boost circuit, the LLC half-bridge resonant circuit and the voltage frequency control circuit.
Optionally: the sinusoidal half-wave production unit further comprises a second auxiliary power supply, and the second auxiliary power supply is connected with the SPWM signal generator.
By adopting the technical scheme, the current harmonic wave of the circuit is small, the power factor is high, the power factor of the PFC value can be improved to 0.98 from the original 0.5, and the pollution to a power grid is small; the circuit structure is simple, the failure rate is low, and the production is convenient; the soft switch LLC half-bridge resonance technology is adopted to reduce the power consumption of the circuit and improve the efficiency.
Drawings
FIG. 1 is a block diagram of the control circuit of the full voltage variable frequency input sine half-wave therapeutic apparatus of the present invention;
FIG. 2 is a schematic diagram of a circuit structure of a part of the circuit of the control circuit of the full-voltage variable-frequency input sine half-wave therapeutic apparatus of the present invention;
FIG. 3 is a schematic diagram of a circuit structure of a part of the circuit of the control circuit of the full-voltage variable-frequency input sine half-wave therapeutic apparatus of the present invention;
FIG. 4 is a schematic diagram of the feedback circuit of the control circuit of the full voltage frequency conversion input sine half-wave therapeutic apparatus of the present invention;
FIG. 5 is a schematic diagram of a circuit structure of a part of the circuit of the control circuit of the full voltage variable frequency input sine half-wave therapeutic apparatus of the present invention;
fig. 6 is the circuit structure schematic diagram of the SPWM signal generator of the full voltage frequency conversion input sine half-wave therapeutic apparatus control circuit of the present invention.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A full voltage frequency conversion input sine half-wave therapeutic apparatus control circuit, as shown in fig. 1-6, comprising:
the input unit is used for accessing an alternating current power supply of 85V-265V;
the input end of the rectification filtering unit is connected with the input unit and is used for carrying out rectification filtering processing on the input voltage and outputting direct-current voltage;
the input end of the boosting rectifying unit is connected with the output end of the rectifying and filtering unit and is used for boosting and rectifying the direct-current voltage output by the rectifying and filtering unit and outputting high-voltage direct current;
the input end of the sine half-wave production unit is connected with the output end of the boosting rectification unit and is used for generating two paths of sine half-wave signals;
and the output unit is connected with the output end of the sine half-wave production unit and is used for respectively driving the magnetic vibration head and the rotary vibration head to work through two paths of sine half-wave signals.
Specifically, the embodiment of the utility model provides an in, rectification filter unit includes EMC circuit (electromagnetic compatibility circuit) and rectification filter circuit, because the therapeutic instrument of this equipment need meet the requirements in its electromagnetic environment and move and not produce the ability of the electromagnetic interference that can't endure to any equipment in its environment, so be provided with the EMC circuit, the input unit is connected to the input of EMC circuit, rectification filter circuit's input is connected to the output of EMC circuit, rectification filter circuit's output is connected the input that the rectification filter unit that steps up.
For example, 85V alternating current is input into the input unit, and after passing through an EMC circuit and a rectifying and filtering circuit, the 85V alternating current is changed into 85V direct current.
The boost rectifying unit comprises a PFC (power factor correction) boost circuit, an LLC half-bridge resonant circuit, a 4-voltage frequency control circuit, a starting circuit, a direct-current voltage isolation output circuit, a feedback circuit and a first auxiliary power supply, wherein the first auxiliary power supply is respectively connected with the starting circuit, the PFC boost circuit, the LLC half-bridge resonant circuit and the voltage frequency control circuit, the output end of a rectifying and filtering circuit in the rectifying and filtering unit is respectively connected with the input end of the starting circuit and the input end of the PFC boost circuit, the output end of the starting circuit is connected with the input end of the PFC boost circuit, the starting circuit is used for starting the PFC boost circuit, the PFC boost circuit is used for boosting the direct-current voltage of the rectifying and filtering unit to about 400V, the output end of the PFC boost circuit is connected with the input end of the LLC half-bridge resonant circuit, soft switching conversion can be realized by using the LLC half-bridge resonant circuit, the power consumption is reduced; the input of direct current voltage isolation output circuit is connected to LLC half-bridge resonant circuit's output, direct current voltage isolation output circuit is used for exporting 380V direct current voltage, feedback circuit's input and the input of sinusoidal half-wave production unit are connected respectively to direct current voltage isolation output circuit's output, voltage frequency control circuit's input is connected to feedback circuit's output, feedback circuit is used for collecting direct current voltage isolation output's voltage signal and sends the deviation to voltage frequency control circuit, LLC half-bridge resonant circuit's input is connected to voltage frequency control circuit's output, voltage frequency control circuit is used for making LLC half-bridge resonant circuit export 380V direct current.
The voltage frequency control circuit is realized by the following specific functions: the LLC half-bridge resonant circuit should output 380V direct current, if 385V direct current is output substantially, the LLC half-bridge resonant circuit has deviation of 5V from a standard value, the feedback circuit collects deviation information from the direct current voltage isolation output circuit and sends the deviation information to the voltage frequency control circuit, and correspondingly, the voltage frequency control circuit controls the LLC half-bridge resonant circuit to stabilize a voltage signal, eliminates deviation and enables the LLC half-bridge resonant circuit to accurately output 380V direct current.
The sine half-wave production unit comprises an SPWM signal generator, a full-bridge switch control circuit, an isolation voltage reduction circuit, a second auxiliary power supply and a power frequency feedback network circuit, wherein the second auxiliary power supply is connected with the SPWM signal generator, used for supplying power to the SPWM signal generator, the input end of the full-bridge switch control circuit is respectively connected with the SPWM signal generator and the direct-current voltage isolation output circuit, the output end of the full-bridge switch control circuit is connected with the isolation voltage reduction circuit, the input end of the power frequency feedback network circuit is connected with the output end of the full-bridge switch control circuit, the output end of the power frequency feedback network circuit is connected with the SPWM signal generator, the power frequency feedback network circuit is used for stabilizing the power frequency signal, when the voltage output by the full-bridge switch control circuit has deviation from the standard voltage, the power frequency feedback network feeds the deviation back to the SPWM signal generator to correct the voltage output by the full-bridge switch control circuit.
The full-bridge switch control circuit is controlled by the SPWM signal generator, the SPWM signal generator generates a high-frequency signal which changes according to a sine rule and a switching signal of 50Hz and sends the high-frequency signal and the switching signal to the full-bridge switch control circuit, the full-bridge switch control circuit outputs 220V and 50Hz low-frequency alternating voltage, the low-frequency alternating voltage is rectified and reduced by the isolation voltage reduction circuit to obtain voltage which can be born by a human body about 8-10V, and then the low-frequency alternating voltage is divided into two paths of sine half-wave signals to respectively drive the magnetic vibration head and the.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (6)
1. The utility model provides a full voltage frequency conversion input sine half-wave therapeutic instrument control circuit which characterized in that: the method comprises the following steps:
the input unit is used for accessing an 85-265V alternating current power supply;
the input end of the rectifying and filtering unit is connected with the input unit and is used for rectifying and filtering the input voltage and outputting direct-current voltage;
the input end of the boosting rectifying unit is connected with the output end of the rectifying and filtering unit and is used for boosting and rectifying the direct-current voltage output by the rectifying and filtering unit and outputting high-voltage direct current;
the input end of the sine half-wave production unit is connected with the output end of the boost rectification unit and is used for generating two paths of sine half-wave signals;
the output unit is connected with the output end of the sine half-wave production unit and is used for respectively driving the magnetic vibration head and the rotary vibration head to work through the two paths of sine half-wave signals;
the boost rectifying unit comprises a PFC boost circuit, an LLC half-bridge resonant circuit, a voltage frequency control circuit and a direct-current voltage isolation output circuit, the PFC boost circuit, the LLC half-bridge resonant circuit, the voltage frequency control circuit and the direct-current voltage isolation output circuit are sequentially connected, the input end of the PFC boost circuit is connected with the output end of the rectifying and filtering unit, and the output end of the direct-current voltage isolation output circuit is connected with the input end of the sine half-wave production unit.
2. The control circuit of claim 1, wherein: the rectifying and filtering unit comprises an EMC circuit and a rectifying and filtering circuit, the input end of the EMC circuit is connected with the input unit, the output end of the EMC circuit is connected with the input end of the rectifying and filtering circuit, and the output end of the rectifying and filtering circuit is connected with the input end of the PFC boosting circuit.
3. The control circuit of claim 2, wherein: the boost rectifying unit further comprises a feedback circuit, the input end of the feedback circuit is connected with the direct-current voltage isolation output circuit, and the output end of the feedback circuit is connected with the voltage frequency control circuit.
4. The control circuit of claim 3, wherein: sinusoidal half-wave production unit includes SPWM signal generator, full-bridge switch control circuit, keeps apart buck circuit and power frequency feedback network circuit, full-bridge switch control circuit's input is connected boost rectifier unit's output, full-bridge switch control circuit's output is connected respectively keep apart buck circuit and power frequency feedback network circuit, keep apart buck circuit's output and connect output unit, power frequency feedback network circuit's output is connected SPWM signal generator, SPWM signal generator's output is connected full-bridge switch control circuit.
5. The control circuit of claim 4, wherein: the boost rectifying unit further comprises a first auxiliary power supply, and the first auxiliary circuit is respectively connected with the PFC boost circuit, the LLC half-bridge resonant circuit and the voltage frequency control circuit.
6. The control circuit of claim 5, wherein: the sinusoidal half-wave production unit further comprises a second auxiliary power supply, and the second auxiliary power supply is connected with the SPWM signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921415632.9U CN210724559U (en) | 2019-08-28 | 2019-08-28 | Full-voltage variable-frequency input sine half-wave therapeutic apparatus control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921415632.9U CN210724559U (en) | 2019-08-28 | 2019-08-28 | Full-voltage variable-frequency input sine half-wave therapeutic apparatus control circuit |
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| Publication Number | Publication Date |
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| CN210724559U true CN210724559U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921415632.9U Active CN210724559U (en) | 2019-08-28 | 2019-08-28 | Full-voltage variable-frequency input sine half-wave therapeutic apparatus control circuit |
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Address after: 450000 East half of Floor 3, Building 1, No. 63, 8th Street, Zhengzhou Area (Economic Development Zone), Henan Free Trade Experimental Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Renhui Medical Technology Co.,Ltd. Address before: Floor 3, Building 1, No. 63, 8th Street, Economic and Technological Development Zone, Zhengzhou City, Henan Province, 450000 Patentee before: ZHENGZHOU RENHUI MEDICAL EQUIPMENT Co.,Ltd. |