阅读说明：本技术 一种脉冲高磁控制电路 (Pulse high-magnetism control circuit ) 是由 李宁 李久峰 何玉芬 陈卫国 何玉明 于 2021-01-22 设计创作，主要内容包括：本发明公开了一种脉冲高磁控制电路,包括：电源电路,将输入的低压交流电整流为高压直流电,然后输出脉冲高压电流,驱动线圈产生脉冲磁场；短路保护电路,检测输入线圈的电流,防止线圈短路时造成芯片烧毁；温度采集电路,采集各部件的温度,判断其是否超过阈值,进而控制散热系统的正常开启和关停；补偿电路,监测及控制电源电路为线圈供电的时间及频率,进而自动控制高磁脉冲的输出；无线通讯模块,实现云管理平台及设备对脉冲高磁控制电路的无线连接及控制。本电路可以驱动线圈产生脉冲高压磁场,该磁场穿透力强,磁场衰减小；还有对温度、短路等情况的检测控制模块,保证电路的持续稳定高效运作；还可以与网络连接,通过移动端进行控制。(The invention discloses a pulse high magnetic control circuit, comprising: the power supply circuit rectifies input low-voltage alternating current into high-voltage direct current, then outputs pulse high-voltage current, and drives the coil to generate a pulse magnetic field; the short-circuit protection circuit detects the current of the input coil and prevents the chip from being burnt when the coil is in short circuit; the temperature acquisition circuit acquires the temperature of each component, judges whether the temperature exceeds a threshold value or not and further controls the normal starting and stopping of the heat dissipation system; the compensation circuit monitors and controls the time and frequency of the power supply circuit for supplying power to the coil, and then automatically controls the output of high magnetic pulse; and the wireless communication module realizes wireless connection and control of the cloud management platform and the equipment to the pulse high-magnetism control circuit. The circuit can drive the coil to generate a pulse high-voltage magnetic field, the magnetic field has strong penetrating power, and the magnetic field attenuation is reduced; the detection control module for the conditions of temperature, short circuit and the like is also arranged, so that the continuous, stable and efficient operation of the circuit is ensured; and the system can also be connected with a network and controlled by a mobile terminal.)

1. a pulsed high magnetic control circuit, comprising:

the power supply circuit rectifies input low-voltage alternating current into high-voltage direct current, then outputs pulse high-voltage current, and drives the coil to generate a pulse magnetic field;

the short-circuit protection circuit detects the current input into the coil and prevents the chip from being burnt when the coil is in short circuit;

the temperature acquisition circuit acquires the temperature of each component, judges whether the temperature exceeds a threshold value or not and further controls the normal starting and stopping of the heat dissipation system;

the compensation circuit monitors and controls the time and frequency of the power supply circuit for supplying power to the coil, and then automatically controls the output of high magnetic pulse;

and the wireless communication module realizes the wireless connection and control of the cloud management platform and the equipment on the pulse high-magnetism control circuit.

2. The pulse high-magnetic control circuit according to claim 1, wherein the power supply circuit rectifies an input low-voltage alternating current into a high-voltage direct current, and then outputs a pulse high-voltage current, and the drive coil generates a pulse magnetic field; the method specifically comprises the following steps:

the power supply circuit rectifies low-voltage alternating current output by the electronic voltage regulator into high-voltage direct current, modulates the high-voltage direct current into low-grade, medium-grade or high-grade pulse high-voltage current through power supply control software, and drives a field effect tube to act on the coil to generate a pulse magnetic field;

wherein, the low-gear, middle-gear or high-gear pulse high-voltage current refers to: the pulse voltage current has three different levels of pulse width.

3. A pulsed high magnetic control circuit according to claim 2, wherein the frequency of the pulsed high magnetic current is 1 Hz; the pulse width of the low-gear pulse high-voltage current is 10 +/-2 ms, the pulse width of the medium-gear pulse high-voltage current is 20 +/-2 ms, and the pulse width of the high-gear pulse high-voltage current is 30 +/-2 ms.

4. A pulsed high-field control circuit according to claim 1, wherein the output pulsed high-field current is specifically: the high-voltage direct current enables the electrolytic capacitor controlled by the PWM control technology of the embedded single chip microcomputer to store or discharge energy alternately instantly, and pulse high-voltage current is generated and output.

5. The pulsed high magnetic control circuit of claim 1 further comprising a trip protection circuit for collecting and determining whether the coil is in a tripped state, and issuing an error indication when the coil is in the tripped state.

6. The pulsed high magnetic control circuit of claim 1, wherein the temperature acquisition circuit acquires the temperature of each component, and specifically comprises: the temperature acquisition circuit adopts a multi-path temperature acquisition feedback circuit and comprises an acquisition coil, a magnetic core, a power supply and a heat dissipation system.

7. The pulsed high magnetic control circuit according to claim 2, wherein the wireless communication module implements wireless connection and control of the pulsed high magnetic control circuit by a cloud management platform and a device, and specifically comprises:

the wireless communication module is in wireless connection with the wireless communication module through a mobile phone and a WeChat public number, the WeChat public number is provided with three treatment packages of low-grade treatment, moderate-grade treatment and severe treatment and respectively corresponds to low-grade pulse high-voltage current, medium-grade pulse high-voltage current and high-grade pulse high-voltage current modulated by the power control software.

Technical Field

The invention belongs to the field of medical health care instruments, and particularly relates to a pulse high-magnetism control circuit.

Background

The magnetic field acts on human body to obtain magnetotherapeutic effect, and influences the current distribution, charged particle motion, membrane system permeability, biological polymer magnetic moment orientation, etc. to alter the physiological and biochemical processes of tissue cell, resulting in analgesia, detumescence, promoting blood and lymph circulation, etc. However, the control circuit of the existing magnetic therapy equipment has the following problems:

firstly, the traditional magnetic therapy equipment generally adopts a direct current power supply, and directly generates a permanent magnetic field instead of a pulse magnetic field through a silicon steel sheet coil, so that the magnetic field is invariable, no pulse and superposition mode exists, the penetration force is poor, the magnetic field attenuation is large, and the generated magnetic field is weak and not enough to penetrate through the surface of a human body to generate a treatment effect.

Moreover, the coil and the silicon steel sheet are in the energized state all the time, so that the coil and the silicon steel sheet generate heat seriously. Or the alternating magnetic field is generated by adopting a mode of continuous discharging and charging of a large capacitor. Under the condition of large current, the long-term working coil and the enameled wire generate heat seriously. The existing control circuit lacks a detection and control module for the temperature of equipment components, so that the enameled wire is short-circuited, an electric circuit is damaged, and personal safety is injured.

Finally, because the power supply circuit always supplies power to act on the coil, the electronic components are easy to age and burn out after long-time operation. The electronic control circuit is too simple (capacitor charging and discharging is commonly used), and the generated magnetic field is uncontrollable and unregulated.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a pulsed high magnetic control circuit for generating and controlling a pulsed high-voltage magnetic field, which can rectify a low-voltage alternating current into a high-voltage direct current and drive a coil to generate a pulsed high-voltage magnetic field, wherein the magnetic field has a strong penetrating power and a small magnetic field attenuation; meanwhile, the circuit is provided with a detection control module for the conditions of temperature, short circuit and the like, so that the continuous, stable and efficient operation of the circuit is ensured; the circuit can be connected with a network and controlled by a mobile terminal.

This patent scheme provides a pulse high magnetism control circuit, includes:

the power supply circuit rectifies input low-voltage alternating current into high-voltage direct current, then outputs pulse high-voltage current, and drives the coil to generate a pulse magnetic field;

the short-circuit protection circuit detects the current input into the coil and prevents the chip from being burnt when the coil is in short circuit;

the temperature acquisition circuit acquires the temperature of each component, judges whether the temperature exceeds a threshold value or not and further controls the normal starting and stopping of the heat dissipation system;

the compensation circuit monitors and controls the time and frequency of the power supply circuit for supplying power to the coil, and then automatically controls the output of high magnetic pulse;

and the wireless communication module realizes the wireless connection and control of the cloud management platform and the equipment on the pulse high-magnetism control circuit.

Furthermore, the power supply circuit rectifies the input low-voltage alternating current into high-voltage direct current, then outputs pulse high-voltage current, and drives the coil to generate a pulse magnetic field; the method specifically comprises the following steps:

the power supply circuit rectifies low-voltage alternating current output by the electronic voltage regulator into high-voltage direct current, modulates the high-voltage direct current into low-grade, medium-grade or high-grade pulse high-voltage current through power supply control software, and drives a field effect tube to act on the coil to generate a pulse magnetic field;

wherein, the low-gear, middle-gear or high-gear pulse high-voltage current refers to: the pulse voltage current has three different levels of pulse width.

Further, the frequency of the pulse high-voltage current is 1 Hz; the pulse width of the low-gear pulse high-voltage current is 10 +/-2 ms, the pulse width of the medium-gear pulse high-voltage current is 20 +/-2 ms, and the pulse width of the high-gear pulse high-voltage current is 30 +/-2 ms.

Further, the output pulse high-voltage current specifically includes: the high-voltage direct current enables the electrolytic capacitor controlled by the PWM control technology of the embedded single chip microcomputer to store or discharge energy alternately instantly, and pulse high-voltage current is generated and output.

And further, the device also comprises a circuit-breaking protection circuit, which is used for acquiring and judging whether the coil is in a circuit-breaking state or not, and sending an error reporting instruction when the coil is in the circuit-breaking state.

Further, the temperature acquisition circuit acquires the temperature of each component, and specifically comprises: the temperature acquisition circuit adopts a multi-path temperature acquisition feedback circuit and comprises an acquisition coil, a magnetic core, a power supply and a heat dissipation system.

Further, the wireless communication module realizes wireless connection and control of the pulse high-magnetism control circuit by a cloud management platform and equipment, and specifically comprises:

the wireless communication module is in wireless connection with the wireless communication module through a mobile phone and a WeChat public number, the WeChat public number is provided with three treatment packages of low-grade treatment, moderate-grade treatment and severe treatment and respectively corresponds to low-grade pulse high-voltage current, medium-grade pulse high-voltage current and high-grade pulse high-voltage current modulated by power supply control software.

The improvement of this patent brings the following advantage:

(1) the pulse high-magnetism control circuit rectifies low-voltage alternating current input from the outside into high-voltage direct current, and then outputs the high-voltage direct current as pulse high-voltage current, so that the driving coil generates a pulse magnetic field. Compared with a permanent magnetic field in the prior art, the high-voltage pulse magnetic field has better penetrability, and the attenuation amplitude of the magnetic field is relatively small after the high-voltage pulse magnetic field is used for a long time. The circuit is matched with a proper magnetic field generating device, and the generated magnetic field is a high-strength linear superposed pulse magnetic field and can penetrate through the surface of a human body to reach the depth of 30CM of the human body.

(2) The pulse high-magnetism control circuit adopts pulse current to supply power to the coil, and uses the compensation circuit to stably control the time and frequency of the power supply circuit to supply power to the coil, thereby effectively avoiding the problem that the coil and the silicon steel sheet generate heat seriously because the coil and the silicon steel sheet are always in a power-on state in the prior art.

(3) Because the pulse high-magnetism control circuit is always under the influence of a high-intensity magnetic field during working, under the condition, electronic components are easy to age and burn out after long-time working, the use experience is seriously influenced, and even the use safety can be threatened. The pulse high-magnetism control circuit is provided with a short-circuit protection circuit and a temperature acquisition circuit, and circuit components in a working state are detected and judged constantly. When the circuit is short-circuited or the temperature is too high, the corresponding detection control circuit can send out a proper control instruction in time, so that the stable and efficient operation of the magnetic therapy equipment is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a pulse high magnetic control circuit according to an embodiment of the present application.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

The magnetic therapy equipment also comprises a coil and a magnetic core for generating a magnetic field, a heat dissipation system for dissipating heat, an electronic voltage regulator for connecting an external power supply and the like;

the pulse high magnetic control circuit includes:

the power supply circuit is used for providing current for the coil to generate a magnetic field, firstly rectifying and boosting low-voltage alternating current input into the circuit by the electronic voltage regulator into high-voltage direct current, then enabling the high-voltage direct current to flow through the electrolytic capacitor, and the electrolytic capacitor stores or discharges energy in an instantaneous and cyclic alternating manner under the control of an embedded single chip microcomputer PWM control technology to generate and output pulse high-voltage current which is input into the coil and drives the coil to generate a high-strength pulse magnetic field;

the short-circuit protection circuit is used for detecting the current input into the coil and judging whether the coil is short-circuited or not; if the coil is short-circuited, high temperature can be generated in a short time, and then the chip is burnt; if the circuit detects and judges that the coil is in a short-circuit state, the circuit controls the power supply circuit to stop inputting current to the coil;

the temperature acquisition circuit is used for acquiring the temperature of each component of the magnetic therapy equipment, so that the phenomenon that the temperature of each component is too high, the line is aged, the use experience is influenced, and even the personal safety of a user is threatened is prevented; when the temperature acquisition circuit detects that the temperature of a certain component exceeds a threshold value, the cooling system is controlled to be started or the working power of the cooling system is increased; if the temperature acquisition circuit detects that the temperature of a certain component exceeds a maximum threshold value, and potential safety hazards can occur when the temperature exceeds the maximum threshold value, the temperature acquisition circuit sends a stop instruction to the compensation circuit and the power supply circuit and sends an obstacle reporting instruction to a user or a manager;

the compensation circuit is used for monitoring and controlling the time and frequency of the power supply circuit for supplying power to the coil, and controlling the power supply circuit to normally run under normal conditions; timely adjusting when the power supply circuit is monitored to have power supply abnormality (not conforming to preset time, frequency and voltage); or when the voltage of the power supply circuit is insufficient, the compensation circuit performs voltage compensation to a certain degree; meanwhile, the circuit is also connected with a wireless communication module, so that the control of the cloud management platform and the equipment on the power circuit and the coil is indirectly realized;

and one end of the wireless communication module is connected with the compensation circuit, and the other end of the wireless communication module is connected with the cloud management platform and the equipment, so that the cloud management platform and the equipment can indirectly control the power circuit and the coil.

The voltage of the low-voltage alternating current can be 269 volts, and the voltage of the high-voltage direct current can be 380 volts. The power circuit is provided with a singlechip, and the singlechip is internally provided with PWM control software for modulating and controlling the pulse width of the pulse current. The power circuit also adopts the circuit design of EMC electromagnetic compatibility (radiation, conduction) and powerful step-up transformer, has guaranteed the stability of electromagnetic therapeutic instrument working power supply, and alternating current power supply is through the rectification enlargied, makes electrolytic capacitor's the alternative work of energy storage in the twinkling of an eye and discharge through embedded singlechip PWM control technology, has guaranteed that the working current of pulse width high pressure through the coil does not influence outside work power supply environment.

The power supply circuit rectifies and boosts low-voltage alternating current output by the electronic voltage regulator into high-voltage direct current, the high-voltage direct current is modulated into pulse high-voltage current of any one of low, medium and high gears through control software in a power supply circuit chip, and a field effect tube in the power supply circuit is driven to act on a coil so as to generate a pulse magnetic field; wherein, the pulse high-voltage current of low gear or middle gear or high gear refers to: the pulse voltage current has three different levels of pulse width. Preferably, the frequency of the pulsed high voltage current is 1 Hz; the pulse width of the low-grade pulse high-voltage current is 10 +/-2 ms, the pulse width of the medium-grade pulse high-voltage current is 20 +/-2 ms, and the pulse width of the high-grade pulse high-voltage current is 30 +/-2 ms. The generation of the coil pulse large magnetic field intensity is realized by adopting the switch control function of a field effect tube with large current and a stable field effect tube driving circuit.

The generation of the coil pulse large magnetic field intensity is realized by adopting the switch control function of a field effect tube with large current and a stable field effect tube driving circuit. A multi-path coil acquisition feedback circuit is adopted, and comprises a magnetic field coil short circuit, an open circuit, a power supply, a coil temperature acquisition circuit and a heat dissipation circulating system acquisition and control circuit. The work protection of the heating of the magnetic field coil and the stability of the magnetic field intensity is realized.

The magnetic therapy equipment also comprises a circuit-breaking protection circuit, wherein the circuit is used for acquiring and judging whether the coil is in a circuit-breaking state or not, and sending an obstacle-reporting instruction to inform a user or a manager to maintain the magnetic therapy equipment when the coil is in the circuit-breaking state.

The temperature acquisition circuit adopts a multi-path temperature acquisition feedback circuit, comprises acquisition coils, a magnetic core, a power supply, a heat dissipation system and other magnetic therapy equipment parts, and is provided with a temperature sensor or an inductor for collecting real-time temperature data of each part.

The mobile phone and the WeChat public number establish wireless connection with the wireless communication module, and a user can directly use the mobile phone to open the WeChat public number to check various states and services of the magnetic therapy equipment, including introduction, treatment effect, various service packages and price of the magnetic therapy equipment; the WeChat public number is provided with three treatment packages of low-grade treatment, moderate treatment and severe treatment which respectively correspond to low-grade pulse high-voltage current, medium-grade pulse high-voltage current and high-grade pulse high-voltage current modulated by power supply control software; after a user selects a therapy set meeting the self requirement, a service background of the WeChat public number sends a corresponding working instruction to the physiotherapy equipment, the working instruction is transmitted to the compensation circuit and the power supply circuit through the wireless communication module, the power supply control software in the power supply circuit is controlled to modulate pulse high-voltage current of corresponding grade, and then the drive coil generates magnetic fields with different strengths for physiotherapy.

The short-circuit protection circuit adopts the design of an IGBT field effect transistor drive circuit, a singlechip PWM pulse input controller is used for controlling the MC33153 (single IGBT grid driver), and the control principle is as follows: the MC33153 has an internal structure with a pin 1 as a current detection input pin for detecting the over-current and the short-circuit of the IGBT with the integrated current detection function, and a pin 2 as a Kelvin ground GND connected with the emitter of the IGBT. Pin 3 is power ground VEE, and pin 2 is connected to pin 3. The 4 pins are signal input pins, receive the PWM signal from the controller and are active at low level. The 5 pins are driving signal output pins and are connected to the grid of the IGBT after passing through the driving resistor. Pin 6 is the power supply VCC, typically 15V. And the pin 7 is a fault signal output pin, and when the IGBT overcurrent or short-circuit fault is detected, the pin 7 outputs a high-level fault signal and returns the high-level fault signal to the controller. And 8 pins are taken as an input pin for the protection and detection, and the conduction saturation state of the IGBT is monitored.

Magnetotherapy equipment is electromagnetic pulse treatment chair, has adopted the pulse high magnetism control circuit of this patent, and with ordinary magnetotherapy chair test contrast result as follows: