阅读说明：本技术 脉冲光治疗仪的硬件保护电路及系统 (Hardware protection circuit and system of pulse light therapeutic apparatus ) 是由 林健波 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种脉冲光治疗仪的硬件保护电路及系统,电路包括：打光脉冲宽度控制模块和打光电流采样比较模块,所述打光脉冲宽度控制模块用于控制脉冲光治疗仪的输出电流,所述打光电流采样比较模块对脉冲光治疗仪实际输出电流进行采样并生成反馈信号。通过硬件保护系统,用于当放电模块出现故障,仪器设定的输出光能量与实际输出光能量相差非常大的时候,硬件保护电路能有效的实时关闭放电模块的工作状态,使放电模块禁止释放强脉冲光能量,从而避免给人体造成治疗效果无法预见甚至直接烧伤患者皮肤的风险。(The invention discloses a hardware protection circuit and a system of a pulse light therapeutic apparatus, wherein the circuit comprises: the pulse width control module of polishing and polish electric current sampling comparison module, the pulse width control module of polishing is used for controlling pulse light therapeutic instrument's output current, polish electric current sampling comparison module and sample and generate feedback signal to pulse light therapeutic instrument actual output current. Through the hardware protection system, when the discharge module breaks down, the output light energy set by the instrument is very different from the actual output light energy, the hardware protection circuit can effectively close the working state of the discharge module in real time, so that the discharge module is forbidden to release strong pulse light energy, and the risk that the skin of a patient cannot be foreseen or even directly burned in the treatment effect of a human body is avoided.)

1. A hardware protection circuit of a pulse light therapeutic apparatus is characterized by comprising: the pulse width control module of polishing and polish electric current sampling comparison module, the pulse width control module of polishing is used for controlling pulse light therapeutic instrument's output current, polish electric current sampling comparison module and sample and generate feedback signal to pulse light therapeutic instrument actual output current.

2. The hardware protection circuit of the PULSE light therapeutic apparatus according to claim 1, wherein the light PULSE width control module comprises an optical coupler U1, a resistor R1, a resistor R2 and a capacitor C1, a cathode of the optical coupler U1 is connected to an ONOFF terminal, an anode of the optical coupler U1 is connected to a second terminal of the resistor R1, a first terminal of the resistor R1 is connected to a VCC terminal, a collector of the optical coupler U1 is connected to a PULSE-IN terminal, an emitter of the optical coupler U1 is connected to the first terminals of the resistor R2 and the capacitor C1, respectively, the first terminal of the capacitor C1 is further connected to a PULSE-OUT terminal, and second terminals of the capacitor C1 and the resistor R2 are connected to a PGND terminal.

3. The hardware protection circuit of claim 1, wherein the comparison module for sampling the photocurrent comprises an operational amplifier U2A, an operational amplifier U2B, a resistor R5, a resistor R3, a resistor R4 and a capacitor C2, the node 1 of the operational amplifier U2A is connected to the I-IN terminal, the node 8 of the operational amplifier U2A is connected to the VCC terminal, the node 3 of the operational amplifier U2A is connected to the first terminal of the resistor R5 and the node 7 of the operational amplifier U2B, the node 2 of the operational amplifier U2A is connected to the I-BACK terminal, the node 4 of the operational amplifier U2A is connected to the second terminal of the capacitor C2, the second terminal of the capacitor C2 is grounded, the first terminal of the capacitor C2 is connected to the I-BACK terminal, the node 6 of the operational amplifier U2 is connected to the second terminal of the resistor R5 and the second terminal of the resistor R3, and the resistor R3 is connected to the ground, the No. 5 node of the operational amplifier U2B is connected with the first end of the resistor R4, and the second end of the resistor R4 is connected with the DAC end.

4. The hardware protection circuit of claim 3, wherein said operational amplifier U2A and U2B are both LM358 operational amplifier.

5. A hardware protection system of a pulse light therapeutic apparatus is characterized by comprising a hardware protection circuit of the pulse light therapeutic apparatus according to any one of claims 1 to 4, a control module, a discharge module and a lamp tube, wherein the lamp tube is connected with the discharge module, the discharge module is connected with the hardware protection circuit of the pulse light therapeutic apparatus, and the hardware protection circuit of the pulse light therapeutic apparatus is connected with the control module;

Wherein, pulsed light therapeutic instrument's hardware protection circuit is used for control the size of the electric current of polishing and the length of on-time are beaten to the module of discharging to the size feedback that will beat the electric current extremely control module, control module receives the size of the electric current of polishing of feedback in order to control pulsed light therapeutic instrument's hardware protection circuit break-make, the fluorescent tube is used for transmitting the pulsed light.

6. The hardware protection system of claim 5, further comprising a display module, wherein the display module is connected to the control module.

7. The hardware protection system of pulse light therapeutic apparatus according to claim 5, wherein said discharging module comprises an IGBT sub-module for receiving signals of the hardware protection circuit of the pulse light therapeutic apparatus for lighting.

8. The hardware protection system of claim 5, wherein said lamp tube is a xenon lamp.

9. The hardware protection system of claim 5, wherein said control module is 80C51 single chip microcomputer.

Technical Field

The invention relates to the field of strong pulse light therapeutic apparatuses for medical cosmetology, in particular to a hardware protection circuit and a system of a pulse light therapeutic apparatus.

Background

The medical beauty treatment intense pulse light therapeutic apparatus used on the market at present is used for treating the skin of a person by utilizing the light energy of the intense pulse light, in the treatment process, the energy of the pulse light is generally set by an upper computer, then data are sent to an MCU of a lower computer, then the MCU sends a signal instruction to an IGBT control circuit, the IGBT control circuit controls the on-off time of the IGBT and the discharge current, and further the light energy of a lamp tube is controlled.

Generally, under the normal condition of an instrument, the instrument works normally, and the output of intense pulse light is normal; however, extreme situations occur, such as a failure of the IGBT control circuit, under the circumstances, the IGBT control circuit cannot normally and effectively control the IGBT, so that the IGBT is out of control, which causes the on-off time and the discharging current of the IGBT to be completely different from the instruction set by the upper computer, so that the instrument can emit intense pulsed light with a very large difference from the set energy, the energy of the output intense pulsed light cannot be predicted, the therapeutic effect cannot be predicted for the human body, and even the skin of the patient is directly burned, thereby causing the occurrence of medical accidents; in practical application, the phenomenon sometimes happens, and in recent years, cases of skin burn of patients caused by uncontrolled intense pulsed light are often reported abroad.

Therefore, the currently commonly used medical cosmetic intense pulse light therapeutic apparatus on the market has the hidden danger and risk that when the IGBT of the apparatus fails, the difference between the output light energy set by the apparatus and the actual output light energy is very large, and the energy cannot be accurately controlled; the risk that the treatment effect of the human body cannot be predicted and even the skin of the patient is directly burned is caused.

disclosure of Invention

the invention aims to overcome the defects of the prior art and provides a hardware protection circuit and a system of a pulse light therapeutic apparatus.

In order to achieve the purpose, the invention adopts the following technical scheme: a hardware protection circuit of a pulse phototherapy apparatus comprises: the pulse width control module of polishing and polish electric current sampling comparison module, the pulse width control module of polishing is used for controlling pulse light therapeutic instrument's output current, polish electric current sampling comparison module and sample and generate feedback signal to pulse light therapeutic instrument actual output current.

The further technical scheme is as follows: beat light PULSE width control module and include opto-coupler U1, resistance R1, resistance R2 and electric capacity C1, opto-coupler U1's negative pole and ONOFF end connection, opto-coupler U1's positive pole with resistance R1's second end is connected, resistance R1's first end and VCC end are connected, opto-coupler U1's collecting electrode and PULSE-IN end connection, opto-coupler U1's projecting pole respectively with resistance R2 with electric capacity C1's first end is connected, electric capacity C1's first end still is connected with PULSE-OUT end, electric capacity C1 and resistance R2's second end and PGND end are connected.

The further technical scheme is as follows: the striking current sampling comparison module comprises an operational amplifier U2A, an operational amplifier U2B, a resistor R5, a resistor R3, a resistor R4 and a capacitor C2, a node 1 of the operational amplifier U2A is connected with an I-IN end, a node 8 of the operational amplifier U2A is connected with a VCC end, a node 3 of the operational amplifier U2A is respectively connected with a first end of the resistor R5 and a node 7 of the operational amplifier U2B, a node 2 of the operational amplifier U2A is connected with an I-K end, a node 4 of the operational amplifier U2A is connected with a second end of the capacitor C2, a second end of the capacitor C2 is grounded, a first end of the capacitor C2 is connected with an I-BACK end, a node 6 of the operational amplifier U2B is respectively connected with a second end of the resistor R5 and a first end of the resistor R3, a second end of the resistor R5 is grounded, and a second end of the BACK B is connected with a node 57324, the second end of the resistor R4 is connected with the DAC end.

the further technical scheme is as follows: the operational amplifier U2A and the operational amplifier U2B are both LM358 operational amplifiers.

A hardware protection system of a pulse light therapeutic apparatus comprises a hardware protection circuit of the pulse light therapeutic apparatus, a control module, a discharging module and a lamp tube, wherein the lamp tube is connected with the discharging module, the discharging module is connected with the hardware protection circuit of the pulse light therapeutic apparatus, and the hardware protection circuit of the pulse light therapeutic apparatus is connected with the control module;

Wherein, pulsed light therapeutic instrument's hardware protection circuit is used for control the size of the electric current of polishing and the length of on-time are beaten to the module of discharging to the size feedback that will beat the electric current extremely control module, control module receives the size of the electric current of polishing of feedback in order to control pulsed light therapeutic instrument's hardware protection circuit break-make, the fluorescent tube is used for transmitting the pulsed light.

The further technical scheme is as follows: the display screen module is connected with the control module.

The further technical scheme is as follows: the discharging module comprises an IGBT sub-module, and the IGBT sub-module is used for receiving signals of a hardware protection circuit of the pulse light therapeutic apparatus to polish.

The further technical scheme is as follows: the lamp tube is a xenon lamp.

The further technical scheme is as follows: the control module is an 80C51 singlechip.

Compared with the prior art, the invention has the beneficial effects that: according to the hardware protection circuit and the system of the pulse light therapeutic apparatus, the system controls the magnitude of the lighting current and the conducting time of the discharge module through the hardware protection circuit, the magnitude of the lighting current is fed back to the control module, the control module receives the fed-back magnitude of the lighting current to control the hardware protection circuit to be switched on and switched off, and the lamp tube is used for emitting pulse light. Through the hardware protection system, when the discharge module breaks down, the output light energy set by the instrument is very different from the actual output light energy, the hardware protection circuit can effectively close the working state of the discharge module in real time, so that the discharge module is forbidden to release strong pulse light energy, and the risk that the skin of a patient cannot be foreseen or even directly burned in the treatment effect of a human body is avoided.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.

Drawings

FIG. 1 is a circuit diagram of a pulse width control module for polishing;

FIG. 2 is a circuit diagram of a striking current sampling comparison module;

FIG. 3 is a schematic diagram of a hardware protection system of the pulse light therapeutic apparatus according to the present invention;

FIG. 4 is a graph of the complete light time versus light current.

Reference numerals

10. A control module; 20. a hardware protection circuit; 30. a discharge module; 40. a lamp tube; 50. and a display screen module.

Detailed Description

in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

in the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

As shown in fig. 1 to 2, a hardware protection circuit of a pulse light therapy apparatus includes: the pulse light therapeutic apparatus comprises a light pulse width control module and a light current sampling comparison module, wherein the light pulse width control module is used for controlling the output current of the pulse light therapeutic apparatus, and the light current sampling comparison module is used for sampling the actual output current of the pulse light therapeutic apparatus and generating a feedback signal. The generated feedback signal is transmitted to the upper-level control part by the polishing current sampling comparison module, the control part makes an execution instruction according to the feedback signal, and the polishing pulse width control module receives the execution instruction to control the output current of the pulse light therapeutic apparatus, so that the polishing pulse width is controlled, and the hardware protection circuit can effectively prevent the damage of the overlarge output current to equipment or a human body and plays a role in protection.

Specifically, as shown IN fig. 1, the light PULSE width control module includes an optical coupler U1, a resistor R1, a resistor R2, and a capacitor C1, a cathode of the optical coupler U1 is connected to an ONOFF terminal, an anode of the optical coupler U1 is connected to a second terminal of the resistor R1, a first terminal of the resistor R1 is connected to a VCC terminal, a collector of the optical coupler U1 is connected to a PULSE-IN terminal, an emitter of the optical coupler U1 is connected to first terminals of the resistor R2 and the capacitor C1, a first terminal of the capacitor C1 is further connected to a PULSE-OUT terminal, and second terminals of the capacitor C1 and the resistor R2 are connected to a PGND terminal.

Specifically, as shown IN fig. 2, the striking current sampling comparison module includes an operational amplifier U2A, an operational amplifier U2B, a resistor R5, a resistor R3, a resistor R4, and a capacitor C2, a node 1 of the operational amplifier U2A is connected to the I-IN terminal, a node 8 of the operational amplifier U2A is connected to the VCC terminal, a node 3 of the operational amplifier U2A is connected to the first terminal of the resistor R5 and the node 7 of the operational amplifier U2B, a node 2 of the operational amplifier U2A is connected to the I-k terminal, a node 4 of the operational amplifier U2A is connected to the second terminal of the capacitor C2, the second terminal of the capacitor C2 is grounded, the first terminal of the capacitor C2 is connected to the I-BACK terminal, a node 6 of the operational amplifier U2B is connected to the second terminal of the resistor R5 and the first terminal of the resistor R3, the second terminal of the resistor R3 is grounded, and the second terminal of the operational amplifier U2 is connected to the bac 4 and the second terminal of the resistor DAC B.

Specifically, the operational amplifier U2A and the operational amplifier U2B are both LM358 operational amplifiers.

As shown in fig. 3, a hardware protection system of a pulse light therapeutic apparatus includes a hardware protection circuit 20 of the pulse light therapeutic apparatus shown in fig. 1 to fig. 2, a control module 10, a discharge module 30 and a lamp 40, where the lamp 40 is connected to the discharge module 30, the discharge module 30 is connected to the hardware protection circuit 20 of the pulse light therapeutic apparatus, and the hardware protection circuit 20 of the pulse light therapeutic apparatus is connected to the control module 10;

The hardware protection circuit 20 of the pulse light therapeutic apparatus is used for controlling the magnitude of the lighting current of the discharge module 30 and the on-time, and feeding the magnitude of the lighting current back to the control module 10, the control module 10 receives the fed-back magnitude of the lighting current to control the on-off of the hardware protection circuit 20 of the pulse light therapeutic apparatus, and the lamp tube 40 is used for emitting pulse light. When the parameters of the hardware protection circuit 20 for monitoring the operation of the discharge module 30 are consistent with the parameters set by the upper computer, the protection circuit does not start the protection action, and the instrument normally operates to output light energy; however, when the hardware protection circuit 20 monitors that the working parameters obtained by the discharge module 30 are inconsistent with the parameters set by the upper computer, the protection circuit immediately starts the protection action and prohibits the discharge module 30 from being turned on again, so that no pulse light is emitted, and the risk of burning the skin of the patient is avoided. Namely, the hardware protection system is used for effectively closing the working state of the discharge module 30 in real time by the hardware protection circuit 20 when the discharge module 30 fails and the difference between the output light energy set by the instrument and the actual output light energy is very large, so that the discharge module 30 is forbidden to release strong pulse light energy, thereby avoiding the risk that the treatment effect cannot be predicted or even the skin of the patient is directly burned to the human body.

Specifically, the control module 10 is primarily configured to monitor the current feedback electrical signal I-IN and control the ONOFF signal. I-IN is high level to indicate that the lighting current is normal; conversely, a low level of I-IN indicates an abnormal photocurrent.

Specifically, as shown in fig. 4, 1 complete light signal is obtained, the height of the pulse represents the magnitude of the light current, and the width of the pulse signal represents the length of the light time. The magnitude of the light energy is proportional to the product of the current and the width. Under the condition that the voltage is not changed, the larger the product of the lighting current and the width is, the larger the lighting energy is, and conversely, the smaller the product of the lighting current and the width is, the smaller the lighting energy is.

Specifically, the discharging module 30 includes an IGBT sub-module for receiving a signal of the hardware protection circuit 20 of the pulse light therapy device for lighting.

Specifically, as shown IN fig. 1, the PULSE-IN signal IN the PULSE width control module comes from the upper computer, and is also transmitted to the external interrupt pin of the control module 10 to monitor whether the signal is the same as the parameter set by the upper computer; the PULSE-OUT signal is transmitted to the discharging module 30, and the IGBT submodule of the discharging module 30 controls the magnitude of the lighting current and the duration of the on-time according to the signal. The ONOFF signal is from the control module 10, and normally, the ONOFF signal is low level, and at this time, the optical coupler is in a conducting state, so that the lighting control signal can smoothly flow from the collector of the optical coupler U1 to the emitter of the optical coupler U1 to the discharging module 30 to control lighting. When the control module 10 detects that the PULSE-IN signal is abnormal, the ONOFF signal is output to a high level, and the optocoupler U1 is IN a non-conducting state, so that the lighting control signal Plus-IN cannot go to the discharge module 30, the discharge module 30 does not output current to the lamp tube 40 any more, and the lamp tube 40 does not emit strong PULSE light any more.

Specifically, as shown in fig. 2, the DAC signal in the striking current sampling and comparing module is from an upper computer, and this signal determines the magnitude of the striking current, and after being amplified by a certain factor, the signal reaches the 3 rd pin of the operational amplifier U2A, and is compared with the feedback signal I-BACK of the actual output current during striking. The I-IN signal is transmitted to the control module 10, the lighting current is normal when the I-IN signal is at a high level, and the lighting current is abnormal when the I-IN signal is at a low level. When the output current of the optical coupler is not abnormal, the voltage of the No. 2 pin of the operational amplifier U2A is smaller than that of the No. 3 pin, the operational amplifier outputs a high level all the time, so that the I-IN signal is always a high level, the control module 10 always considers that the optical coupler is normal, and the control module outputs a low level to the ONOFF signal all the time to enable the optical coupler U1 to be always conducted. However, if the feedback signal I-BACK of the actual output current of the lighting is increased to be larger than the signal after the DAC signal is proportionally amplified (i.e. the voltage of the 2 nd pin of U2A is larger than the voltage of the 3 rd pin), the output signal I-IN of the operational amplifier U2A is at a low level, so that the lighting current is considered to be abnormal by the control, and the ONOFF outputs a high level to block the conduction of the optocoupler U1, so that the lighting control signal cannot go to the IGBT submodule, the IGBT submodule cannot have current to flow to the lamp tube 40, and the lamp tube 40 cannot emit strong pulse light any more.

Specifically, as shown in fig. 3, the display device further includes a display screen module 50, the display screen module 50 is connected to the control module 10, and the display screen module 50 is used for displaying.

Specifically, the lamp 40 is a xenon lamp for emitting pulsed light.

Specifically, the control module 10 is an 80C51 single chip microcomputer, and is high in reliability and strong in operability.

Compared with the prior art, the hardware protection circuit and the system of the pulse light therapeutic apparatus provided by the invention have the advantages that the system controls the magnitude of the lighting current and the on-time of the discharging module through the hardware protection circuit, the lighting current is fed back to the control module, the control module receives the fed-back lighting current to control the on-off of the hardware protection circuit, and the lamp tube is used for emitting pulse light. Through the hardware protection system, when the discharge module breaks down, the output light energy set by the instrument is very different from the actual output light energy, the hardware protection circuit can effectively close the working state of the discharge module in real time, so that the discharge module is forbidden to release strong pulse light energy, and the risk that the skin of a patient cannot be foreseen or even directly burned in the treatment effect of a human body is avoided.

The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.