Signal analysis board for radio frequency puncture instrument

Abstract

The embodiment of the invention provides a signal analysis board for a radio frequency puncture instrument. The signal analysis board comprises a power supply circuit, a communication circuit, a control circuit and a signal processing circuit, the power supply circuit, the communication circuit and the signal processing circuit are respectively connected with the control circuit, and the communication circuit is also connected with a main control board in the radio frequency puncture instrument; the signal processing circuit is also connected with the neutral electrode and is configured to process an input signal so as to improve the signal quality; the processing comprises amplitude transformation, amplification and rectification; the beneficial effects are that the signal processing circuit is specially used for signal processing, and the signal is subjected to amplitude transformation, amplification and rectification processing; meanwhile, power is supplied to an operational amplifier in the signal processing circuit through double power supplies, so that phase compensation is realized; therefore, the defect of low signal quality caused by the fact that a special signal processing device is not involved in signal processing in the existing scheme is overcome.

Description

Technical Field

[0001] The invention belongs to the technical field of integrated circuits, and in particular relates to a signal analysis board for a radio frequency puncture instrument. Background Art

[0002] Radio frequency technology has been widely used in the medical and beauty fields. It usually consists of a radio frequency generator, a temperature measurement device, a treatment electrode, a cable, a neutral electrode (if any), etc. Since noise and interference are inevitable in the process of collecting bioelectric signals, it is necessary to process the signals.

[0003] However, in current applications, most of them directly transmit the collected signals to a processing device for centralized processing, and do not involve signal processing through a dedicated signal processing device, which can easily lead to the defect of low signal quality. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a signal analysis board for a radiofrequency puncture instrument to improve signal quality.

[0005] The technical solution adopted by the present invention is: a signal analysis board for a radio frequency puncture instrument, applied to the radio frequency puncture instrument, the signal analysis board comprises a power supply circuit, a communication circuit, a control circuit and a signal processing circuit; the power supply circuit, the communication circuit and the signal processing circuit are respectively connected to the control circuit, and the communication circuit is also connected to the main control board in the radio frequency puncture instrument;

[0006] The signal processing circuit is also connected to the neutral electrode and is configured to:

[0007] The input signal is processed to improve the signal quality; wherein the processing includes amplitude conversion, amplification and rectification.

[0008] As a specific preferred embodiment of the present application, the power supply circuit includes a dual power supply, and the dual power supply is used to supply power to the signal processing circuit.

[0009] As a specific preferred embodiment of the present application, the signal processing circuit includes an operational amplifier, the operational amplifier is powered by a dual power supply mode, and phase compensation is performed on the power supply ports of the operational amplifier.

[0010] As a specific preferred embodiment of the present application, the signal processing circuit further includes a conversion device and a rectifier circuit:

[0011] One end of the conversion device is connected to the neutral electrode, the other end of the conversion device is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the control circuit through the rectifier circuit.

[0012] As a specific preferred embodiment of the present application, the input end of the operational amplifier is further connected to a resonant circuit to achieve signal attenuation.

[0013] As a specific preferred embodiment of the present application, the resonant circuit includes an inductor and a capacitor connected in parallel.

[0014] As a specific preferred embodiment of the present application, a protection device is also connected in anti-parallel between the rectifier circuit and the control circuit.

[0015] It can be seen from the above technical scheme that the signal analysis board for a radiofrequency puncture instrument provided by the present invention specifically performs signal processing through the signal processing circuit in the signal analysis board, and performs amplitude conversion, amplification and rectification processing on the signal; at the same time, the operational amplifier in the signal processing circuit is powered by a dual power supply to achieve phase compensation; thereby overcoming the defect that the existing scheme does not involve signal processing through a special signal processing device, thereby causing low signal quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0017] Figure 1 A principle block diagram of a signal analysis board for a radio frequency puncture instrument provided as background technology;

[0018] Figure 2 A structural diagram of a power supply circuit provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a portion of a dual power supply connection provided by an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of another part of the connection of a dual power supply provided by an embodiment of the present invention;

[0021] Figure 5 A structural diagram of a control circuit provided by an embodiment of the present invention;

[0022] Figure 6 A structural diagram of a communication circuit provided by an embodiment of the present invention;

[0023] Figure 7 A connection diagram of a signal processing circuit provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The embodiments of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and the protection scope of the present invention cannot be limited thereto. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should be the common meanings understood by those skilled in the art to which the present invention belongs.

[0025] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0026] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0027] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0028] It should be noted that, unless otherwise specified, the technical terms in this embodiment have the common meanings understood in the relevant technical field.

[0029] See also Figures 1 to 7 A signal analysis board for a radio frequency puncture instrument provided in an embodiment of the present invention is applied to the radio frequency puncture instrument, and the signal analysis board includes a power supply circuit, a communication circuit, a control circuit and a signal processing circuit; the power supply circuit, the communication circuit and the signal processing circuit are respectively connected to the control circuit, and the communication circuit is also connected to the main control board in the radio frequency puncture instrument;

[0030] The signal processing circuit is also connected to the neutral electrode and is configured to:

[0031] The input signal is processed to improve the signal quality; wherein the processing includes amplitude conversion, amplification and rectification.

[0032] When used, the power supply circuit includes a dual power supply, and the dual power supply is used to supply power to the signal processing circuit; using the dual power supply can avoid signal distortion.

[0033] It should be noted that the energy source of the signal board in this embodiment is the mains electricity. Figure 2 After passing through the ACDC module, it becomes a low voltage +5V, and then passes through the LDO circuit to become 3.3V to power the controller;

[0034] Reference Figure 3 and Figure 4 , the dual power supply is Figure 3 VAN5 and Figure 4 The specific conversion process of VAP5 is shown in the attached figure and will not be described in detail.

[0035] In this embodiment, refer to Figure 5 The main control chip (i.e., controller) in the control circuit adopts STM32F103, which adopts the high-performance ARM Cortex-M3 32-bit RISC core; the operating frequency can reach 72MHz, providing a processing capacity of up to 1.252DMIPS, with 64KB Flash and 20KB static random access memory (SRAM), the chip has rich I / O ports, supports a variety of peripheral interfaces, and is convenient for connecting and communicating with hardware devices; it integrates a variety of peripherals, including but not limited to SPI, I2C, USART, ADC, USB, etc., supports a variety of communication protocols, including 2 I2C interfaces, 3 USART interfaces, 1 SPI interface and 1 CAN interface; supports JTAG and SWD interfaces (i.e., J6 in the attached figure), which is convenient for debugging and continuous burning.

[0036] In this embodiment, the communication between the signal board and the main control board is realized. Figure 6 The communication circuit shown in the figure adopts the USART to RS485 communication mode; RS485 has a high noise tolerance, can work stably in a noisy environment, has a high data transmission rate (ranging from 300bps to 10Mbps), and can be applied to a variety of communication needs; it should be noted that the above is only an example and is not a limitation.

[0037] In this embodiment, refer to Figure 7 The signal processing circuit includes an operational amplifier, the operational amplifier is powered by a dual power supply mode, and phase compensation is performed on the power supply ports of the operational amplifier.

[0038] The operational amplifier is U14 in the figure, which is a high-speed operational amplifier used for signal isolation and precise amplification; at the same time, the capacitor C34 connected to VAN5 and the capacitor C35 connected to VAP5 are used to respectively realize phase compensation of the corresponding power ports.

[0039] In this embodiment, the signal processing circuit further includes a conversion device and a rectifier circuit:

[0040] One end of the conversion device is connected to the neutral electrode, the other end of the conversion device is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the control circuit through the rectifier circuit.

[0041] Specifically, the conversion device adopts a mutual inductor, that is, Figure 7 L8 in the figure; the PAD1 and PAD2 represent the connected neutral electrodes;

[0042] like Figure 7 As shown, the input of the operational amplifier is also connected to an integrated device, using 74HC04, which is a six-inverter integrated circuit used for logical processing of signals, such as signal shaping or buffering.

[0043] Furthermore, the input end of the operational amplifier is also connected to a resonant circuit to achieve signal attenuation; wherein the resonant circuit includes an inductor and a capacitor connected in parallel; namely, L9 and C32 in the accompanying drawings, which utilizes the signal attenuation at the resonant frequency to reduce the amplitude.

[0044] Furthermore, a protection device is anti-parallel connected between the rectification circuit and the control circuit; in this embodiment, the diodes BAV99 and D10 in the figure are used for signal rectification and detection; the protection device is D11.

[0045] It should be noted that, refer to the attached Figure 7 The circuit contains multiple resistors (such as R59, R76) and capacitors (such as C32, C37, C55). These components are used for signal conditioning, such as filtering, decoupling, and signal stabilization. Ultimately, high-quality signal adjustment is achieved to ensure the accuracy and stability of the electrode signal. In addition, the power supply and signal are filtered to reduce noise and interference, thereby improving the signal-to-noise ratio.

[0046] The above scheme uses the signal processing circuit in the signal analysis board to specifically perform signal processing, and performs amplitude conversion, amplification and rectification on the signal; at the same time, the operational amplifier in the signal processing circuit is powered by a dual power supply to achieve phase compensation; thereby overcoming the defect that the existing scheme does not involve signal processing through a dedicated signal processing device, thereby causing low signal quality.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A signal analysis board for a radiofrequency puncture instrument, applied to a radiofrequency puncture instrument, characterized in that: The signal analysis board includes a power supply circuit, a communication circuit, a control circuit and a signal processing circuit; the power supply circuit, the communication circuit and the signal processing circuit are respectively connected to the control circuit, and the communication circuit is also connected to the main control board in the radiofrequency puncture instrument; The signal processing circuit is also connected to the neutral electrode and is configured to: The input signal is processed to improve the signal quality; wherein the processing includes amplitude conversion, amplification and rectification.

2. A signal analysis board for a radiofrequency puncture apparatus according to claim 1, characterized in that: The power supply circuit includes a dual power supply, and the dual power supply is used to supply power to the signal processing circuit.

3. A signal analysis board for a radiofrequency puncture apparatus according to claim 2, characterized in that: The signal processing circuit comprises an operational amplifier, the power supply of the operational amplifier adopts a dual power supply mode, and phase compensation is performed on the power supply ports of the operational amplifier.

4. The signal analysis board for a radiofrequency puncture apparatus according to claim 3, characterized in that: The signal processing circuit also includes a conversion device and a rectifier circuit: One end of the conversion device is connected to the neutral electrode, the other end of the conversion device is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the control circuit through the rectifier circuit.

5. The signal analysis board for a radiofrequency puncture apparatus according to claim 4, characterized in that: The input end of the operational amplifier is also connected to a resonant circuit to achieve signal attenuation.

6. The signal analysis board for a radiofrequency puncture apparatus according to claim 5, characterized in that: The resonant circuit includes an inductor and a capacitor connected in parallel.

7. The signal analysis board for a radiofrequency puncture apparatus according to claim 4, characterized in that: A protection device is also connected in anti-parallel between the rectifier circuit and the control circuit.

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