CN220732370U - A traveling wave high and low voltage power supply circuit - Google Patents

Abstract

The utility model discloses a traveling wave high-low voltage power supply circuit, and relates to the technical field of traveling wave driving; comprising the following steps: providing a first DAC power supply module capable of adjusting high potential voltage, a second DAC power supply module capable of adjusting low potential voltage and a switch output module; the scheme improves the circuit structure on the existing high-low voltage power supply technology, high potential and low potential voltage required by traveling wave signals are provided for traveling wave electrodes through the cooperation of the first DAC power supply module, the second DAC power supply module and the switch output module, the high potential voltage and the low potential voltage are controlled through the DAC, and the traveling wave high-low voltage can be controlled by simply adjusting the first DAC power supply module and the second DAC power supply module; the regulation and control mode and the whole circuit structure are far simpler than the operational amplifier control.

Description

A traveling wave high and low voltage power supply circuit

Technical Field

The utility model relates to the technical field of traveling wave driving, in particular to a traveling wave high and low voltage power supply circuit.

Background technique

In a mass spectrometer, ions are mainly confined radially by radio frequency electric fields to reduce losses, while traveling waves, as the driving force for ion axial propagation, have an important impact on ion transmission. In the traveling wave stacked ring off-axis transmission structure, traveling waves are not only the axial power source for ions, but also play an important role in ion extraction.

If the stability of the traveling wave voltage affects the ion transmission effect of the traveling wave stacked ring off-axis transmission structure, a traveling wave generating circuit with stable waveform, high signal quality and high safety becomes very important.

The function of the traveling wave high and low voltage power supply circuit is to generate the high potential and low potential voltages required for the traveling wave signal. The traveling wave high and low voltage power supply circuit is also an important link in ensuring the ion transmission effect.

Existing traveling wave high and low voltage power supply circuits usually output a constant high voltage or low voltage, which makes it difficult to regulate the output voltage value and to adapt to the transmission of different types of ions. The high and low voltages of the traveling wave are constant, which affects the versatility of the traveling wave stacked ring off-axis transmission structure.

Utility Model Content

The technical problem to be solved by the utility model is that the existing traveling wave high and low voltage power supply circuit usually outputs a constant high voltage or low voltage, and it is difficult to adjust the output voltage value and adapt to the transmission of different types of ions; the high and low voltages of the traveling wave are constant, which affects the versatility of the traveling wave stacked ring off-axis transmission structure. The utility model aims to provide a traveling wave high and low voltage power supply circuit, which improves the circuit structure on the basis of the existing high and low voltage power supply technology, and provides the high potential and low potential voltage required for the traveling wave signal to the traveling wave electrode through the cooperation of the DAC power supply module and the switch output module. The power supply modules are all controlled by the DAC, which is convenient for adjusting the output voltage and has a simple structure; at the same time, the scheme also provides a matching detection module to perform real-time detection of the high potential voltage or the low high potential voltage, thereby reducing the measurement deviation of the subsequent measurement circuit.

The utility model is realized by the following technical solutions:

This solution provides a traveling wave high and low voltage power supply circuit, including:

A first DAC power supply module, used for providing an adjustable high potential voltage, wherein the first DAC power supply module is electrically connected to the switch output module;

A second DAC power supply module, used for providing an adjustable low potential voltage, wherein the second DAC power supply module is electrically connected to the switch output module;

A switch output module, used to connect the first DAC power supply module with the traveling wave electrode to provide an adjustable high potential voltage to the traveling wave electrode; or connect the second DAC power supply module with the traveling wave electrode to provide an adjustable low potential voltage to the traveling wave electrode; the switch output module is electrically connected to the traveling wave electrode;

The detection module is used for real-time detection of the high potential voltage or the low high potential voltage applied to the traveling wave electrode, and the detection module is electrically connected to the traveling wave electrode.

Working principle of this scheme: Existing traveling wave high and low voltage power supply circuits usually output constant high voltage or low voltage, which makes it difficult to adjust the output voltage value and adapt to the transmission of different types of ions. The high and low voltages of the traveling wave are constant, which affects the versatility of the traveling wave stacked ring off-axis transmission structure. This scheme provides a traveling wave high and low voltage power supply circuit. On the basis of the existing high and low voltage power supply technology, the circuit structure is improved. The high and low potential voltages required for the traveling wave signal are provided to the traveling wave electrode through the cooperation of the first DAC power supply module, the second DAC power supply module and the switch output module. The first DAC power supply module and the second DAC power supply module are both controlled by DAC, which is convenient to adjust and has a simple structure. The high and low potential voltages are both controlled by DAC, and the control of different high and low voltages of the traveling wave can be achieved by simply adjusting the first DAC power supply module and the second DAC power supply module.

Traditional voltage regulation circuits usually use op amp circuits to control the output voltage. When directly applied to the traveling wave stacked ring off-axis transmission structure, not only is the circuit structure complex, but there are also problems such as low control accuracy and difficult control methods. In order to ensure that the traveling wave occurs accurately, the frequency and high and low voltage amplitudes of the traveling wave need to be monitored in real time. However, using op amp circuits to control the voltage will lead to large errors in the subsequent detection. This solution also provides a detection module that matches the first DAC power supply module, the second DAC power supply module and the switch output module to perform real-time detection of high potential voltage or low high potential voltage, thereby reducing the measurement deviation of the subsequent measurement circuit.

A further optimization solution is that both the first DAC power supply module and the second DAC power supply module include a DAC control circuit.

A further optimized solution is that the DAC control circuit includes: a DAC control terminal, a resistor R0, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C3, a power amplifier and an operational amplifier;

The DAC control terminal is connected to the resistor R0 and then to the positive input terminal of the power amplifier. The negative input terminal of the power amplifier is connected in series with the resistor R1 and then to the analog ground. One end of the resistor R2 is connected to the negative input terminal of the power amplifier, and the other end is connected to the output terminal of the power amplifier.

The output end of the power amplifier is connected in series with resistor R4 and then connected to the positive input end of the operational amplifier, and the negative input end of the operational amplifier is connected in series with resistor R3 and then connected to the analog ground; one end of resistor R5 is connected to the negative input end of the operational amplifier, and the other end is connected to the output end of the operational amplifier, the output end of the operational amplifier is connected in series with capacitor C3 and then connected to the analog ground, and the output end of the operational amplifier serves as the output end of the DAC control circuit.

A further optimization scheme is that the operational amplifier is of the type OPA454; the DAC control circuit further includes a capacitor C1 and a capacitor C2;

The first E/D interface of the operational amplifier is connected to a 105V power supply; one end of the capacitor C1 is connected to the first E/D interface of the operational amplifier, and the other end is connected to the first power interface of the operational amplifier, and the first power interface of the operational amplifier is connected to an analog ground; the second power interface of the operational amplifier is connected to a -5V power supply; the second E/D interface of the operational amplifier is connected in series with a capacitor C2 and then connected to an analog ground.

A further optimized solution is that the detection module includes a signal attenuation circuit and an ADC acquisition circuit; the signal attenuation circuit includes: an impedance matching circuit, a voltage divider circuit and an isolation circuit connected in sequence;

The traveling wave electrode is connected to the input end of the impedance matching circuit, and the output end of the impedance matching circuit is connected to the ADC acquisition circuit through a voltage divider circuit and an isolation circuit.

The traveling wave voltage applied to the stacked traveling wave electrode is impedance matched by the voltage follower in the voltage divider circuit so that sufficient voltage is transmitted to the next stage. The voltage divider circuit in the signal attenuation circuit first reduces the input signal of the traveling wave electrode through resistance voltage division, and then uses the voltage follower of the isolation circuit as the isolation between the front and rear circuits; the signal processed by the signal attenuation circuit is sent to the 12-bit ADC acquisition circuit for analog-to-digital conversion, and the voltage is obtained according to the conversion result.

A further optimized solution is that the impedance matching circuit includes: a resistor R11, a resistor R15, a capacitor C9 and a voltage follower;

One end of resistor R11 is connected to the traveling wave electrode, and the other end is connected to the positive input end of the voltage follower. The negative input end of the voltage follower is connected to the analog ground, and the negative input end and the output end of the voltage follower are short-circuited; the first end of resistor R15 is connected to the output end of the voltage follower, and the second end of resistor R15 is connected to the isolation circuit as the output end of the impedance matching circuit; one end of capacitor C9 is connected to the second end of resistor R15, and the other end is connected to the analog ground.

A further optimized solution is that the first power interface of the voltage follower is connected to a 5V power supply, and the second power interface of the voltage follower is connected to an analog ground.

A further optimization scheme is that the voltage divider circuit and the isolation circuit are composed of a first operational amplifier and a peripheral circuit; the model of the first operational amplifier is OPA2356;

The peripheral circuit includes: a first access terminal, a second access terminal, a first output terminal, a second output terminal, a resistor R3, a resistor R4, a resistor R8, a resistor R9, a resistor R11, a resistor R14, a capacitor C1 and a capacitor C2;

The high potential voltage and the low high potential voltage are connected to the first access terminal and the second access terminal respectively;

The first access terminal is connected to the IN1+ interface of the first operational amplifier after being connected in series with the resistor R14; one end of the resistor R9 is connected to the IN1+ interface of the first operational amplifier, and the other end is connected to the VEE interface of the first operational amplifier; the VEE interface of the first operational amplifier is grounded;

One end of the resistor R3 is connected to the OUT1 interface of the first operational amplifier, and the other end is connected in series with the capacitor C1 and then grounded; the OUT1 interface of the first operational amplifier is short-circuited with the IN1- interface, and the first output end is located between the resistor R3 and the capacitor C1;

The second access terminal is connected in series with a resistor R11 and then connected to the IN2+ interface of the first operational amplifier; one end of the resistor R8 is connected to the IN2+ interface of the first operational amplifier, and the other end is grounded; the VCC interface of the first operational amplifier is connected to a 5V power supply;

One end of the resistor R4 is connected to the OUT2 interface of the first operational amplifier, and the other end is connected in series with the capacitor C2 and then grounded. The OUT2 interface of the first operational amplifier is short-circuited with the IN2- interface, and the second output end is located between the resistor R4 and the capacitor C2.

A further optimization scheme is that the ADC acquisition circuit includes a sampling chip, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6 and a resistor R10; the model of the sampling chip is ADC128S102CIMTX;

The high potential voltage or low high potential voltage output by the signal attenuation circuit is connected to the input port of the sampling chip, the AGND port of the sampling chip is grounded, the DGND port of the sampling chip is connected to the digital ground, the VD port of the sampling chip is connected in series with capacitor C6 and then connected to the digital ground, the capacitor C5 is connected in parallel on both sides of the capacitor C6, and the VD port of the sampling chip is connected to a 3.3V power supply;

One end of capacitor C3 is connected to the VA port of the sampling chip, and the other end is connected in series with resistor R10 and then connected to the digital ground, and the space between capacitor C3 and resistor R10 is grounded; capacitor C4 is connected in parallel on both sides of capacitor C3, and the VA port of the sampling chip serves as the output end of the ADC acquisition circuit.

A further optimization solution is to ground the idle input port of the sampling chip.

The detection module is based on digital filtering and linear conversion, which makes the measurement deviation of the entire measurement circuit small.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

The utility model provides a traveling wave high and low voltage power supply circuit. On the basis of the existing high and low voltage power supply technology, the circuit structure is improved. The high potential and low potential voltages required for the traveling wave signal are provided to the traveling wave electrode through the cooperation of a first DAC power supply module, a second DAC power supply module and a switch output module. The first DAC power supply module and the second DAC power supply module are both controlled by DAC, which is convenient for regulation and has a simple structure. The high and low potential voltages are both controlled by DAC, and the control of different high and low voltages of the traveling wave can be achieved by simply adjusting the first DAC power supply module and the second DAC power supply module. It is much simpler than operational amplifier control, and the circuit structure is greatly simplified compared with operational amplifier control.

The utility model provides a traveling wave high and low voltage power supply circuit, which is provided with a detection module matched with a first DAC power supply module, a second DAC power supply module and a switch output module, and performs real-time detection of a high potential voltage or a low high potential voltage. The detection module is based on digital filtering and linear conversion, so that the measurement deviation of the entire measurement circuit is small; and the measurement deviation of the subsequent measurement circuit is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

Figure 1 is a block diagram of a traveling wave high and low voltage power supply circuit;

FIG2 is a partial schematic diagram of a DAC control circuit;

FIG3 is a partial schematic diagram of an impedance matching circuit;

FIG4 is a partial schematic diagram of a voltage divider circuit and an isolation circuit;

FIG5 is a partial schematic diagram of an ADC acquisition circuit.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

The existing traveling wave high and low voltage power supply circuit usually outputs a constant high voltage or low voltage, which makes it difficult to adjust the output voltage value and adapt to the transmission of different types of ions; the high and low voltages of the traveling wave are constant, which affects the versatility of the traveling wave stacked ring off-axis transmission structure. The utility model provides the following embodiments to solve the above technical problems:

Example 1

This embodiment 1 provides a traveling wave high and low voltage power supply circuit, as shown in FIG1 , including:

A first DAC power supply module, used for providing an adjustable high potential voltage, wherein the first DAC power supply module is electrically connected to the switch output module;

A second DAC power supply module, used for providing an adjustable low potential voltage, wherein the second DAC power supply module is electrically connected to the switch output module;

A switch output module, used to connect the first DAC power supply module with the traveling wave electrode to provide an adjustable high potential voltage to the traveling wave electrode; or connect the second DAC power supply module with the traveling wave electrode to provide an adjustable low potential voltage to the traveling wave electrode; the switch output module is electrically connected to the traveling wave electrode;

The detection module is used for real-time detection of the high potential voltage or the low high potential voltage applied to the traveling wave electrode, and the detection module is electrically connected to the traveling wave electrode.

The high potential and low potential voltages required for the traveling wave signal are provided to the traveling wave electrode through the cooperation of the first DAC power supply module, the second DAC power supply module and the switch output module. The first DAC power supply module and the second DAC power supply module are both controlled by DAC, which is convenient for regulation and has a simple structure. The high and low potential voltages are both controlled by DAC, and the control of different high and low voltages of the traveling wave can be achieved by simply adjusting the first DAC power supply module and the second DAC power supply module.

Example 2

On the basis of the previous embodiment, in this embodiment, the first DAC power supply module and the second DAC power supply module have the same circuit structure, and both include a DAC control circuit.

As shown in FIG2 , the DAC control circuit includes: a DAC control terminal, a resistor R0, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C3, a power amplifier and an operational amplifier;

The DAC control terminal is connected to the resistor R0 and then to the positive input terminal of the power amplifier. The negative input terminal of the power amplifier is connected in series with the resistor R1 and then to the analog ground. One end of the resistor R2 is connected to the negative input terminal of the power amplifier, and the other end is connected to the output terminal of the power amplifier.

The output end of the power amplifier is connected in series with resistor R4 and then connected to the positive input end of the operational amplifier, and the negative input end of the operational amplifier is connected in series with resistor R3 and then connected to the analog ground; one end of resistor R5 is connected to the negative input end of the operational amplifier, and the other end is connected to the output end of the operational amplifier, the output end of the operational amplifier is connected in series with capacitor C3 and then connected to the analog ground, and the output end of the operational amplifier serves as the output end of the DAC control circuit.

The operational amplifier is OPA454; the DAC control circuit also includes capacitors C1 and C2;

The first E/D interface of the operational amplifier is connected to a 105V power supply; one end of the capacitor C1 is connected to the first E/D interface of the operational amplifier, and the other end is connected to the first power interface of the operational amplifier, and the first power interface of the operational amplifier is connected to an analog ground; the second power interface of the operational amplifier is connected to a -5V power supply; the second E/D interface of the operational amplifier is connected in series with a capacitor C2 and then connected to an analog ground.

The 0-5V voltage at the DAC control end can achieve 0-100V voltage control after passing through the two-stage high-voltage op amp of the power amplifier and the operational amplifier. It only requires simple adjustment of the values of the two DAC control ends to achieve the control of different high and low voltages of the traveling wave, which is much simpler than the traditional op amp circuit control.

Example 3

On the basis of the previous embodiment, the detection module of this embodiment includes a signal attenuation circuit and an ADC acquisition circuit; the signal attenuation circuit includes: an impedance matching circuit, a voltage divider circuit and an isolation circuit connected in sequence;

The traveling wave electrode is connected to the input end of the impedance matching circuit, and the output end of the impedance matching circuit is connected to the ADC acquisition circuit through a voltage divider circuit and an isolation circuit.

As shown in FIG3 , the impedance matching circuit includes: a resistor R11, a resistor R15, a capacitor C9 and a voltage follower;

One end of resistor R11 is connected to the traveling wave electrode, and the other end is connected to the positive input end of the voltage follower. The negative input end of the voltage follower is connected to the analog ground, and the negative input end and the output end of the voltage follower are short-circuited; the first end of resistor R15 is connected to the output end of the voltage follower, and the second end of resistor R15 is connected to the isolation circuit as the output end of the impedance matching circuit; one end of capacitor C9 is connected to the second end of resistor R15, and the other end is connected to the analog ground.

The first power interface of the voltage follower is connected to a 5V power supply, and the second power interface of the voltage follower is connected to an analog ground.

The voltage divider circuit in the signal attenuation circuit first reduces the input signal of the traveling wave electrode through resistor voltage division, and then uses the voltage follower of the isolation circuit as the isolation of the front and rear circuits; the signal processed by the signal attenuation circuit is sent to the ADC acquisition circuit for analog-to-digital conversion, and finally the detection voltage is obtained according to the conversion result. This embodiment is based on digital filtering and linear conversion to reduce the measurement deviation of the entire measurement circuit.

Example 4

On the basis of the previous embodiment, as shown in FIG4 , the voltage divider circuit and the isolation circuit of this embodiment are composed of a first operational amplifier and a peripheral circuit; the model of the first operational amplifier is OPA2356;

The peripheral circuit includes: a first access terminal, a second access terminal, a first output terminal, a second output terminal, a resistor R3, a resistor R4, a resistor R8, a resistor R9, a resistor R11, a resistor R14, a capacitor C1 and a capacitor C2;

The high potential voltage and the low high potential voltage are connected to the first access terminal and the second access terminal respectively;

The first access terminal is connected to the IN1+ interface of the first operational amplifier after being connected in series with the resistor R14; one end of the resistor R9 is connected to the IN1+ interface of the first operational amplifier, and the other end is connected to the VEE interface of the first operational amplifier; the VEE interface of the first operational amplifier is grounded;

One end of the resistor R3 is connected to the OUT1 interface of the first operational amplifier, and the other end is connected in series with the capacitor C1 and then grounded; the OUT1 interface of the first operational amplifier is short-circuited with the IN1- interface, and the first output end is located between the resistor R3 and the capacitor C1;

The second access terminal is connected in series with a resistor R11 and then connected to the IN2+ interface of the first operational amplifier; one end of the resistor R8 is connected to the IN2+ interface of the first operational amplifier, and the other end is grounded; the VCC interface of the first operational amplifier is connected to a 5V power supply;

One end of the resistor R4 is connected to the OUT2 interface of the first operational amplifier, and the other end is connected in series with the capacitor C2 and then grounded. The OUT2 interface of the first operational amplifier is short-circuited with the IN2- interface, and the second output end is located between the resistor R4 and the capacitor C2.

The traveling wave voltage applied to the stacked ring traveling wave electrode is impedance matched by a voltage follower in an impedance matching circuit, so that sufficient voltage can be transmitted to the subsequent stage, making the subsequent stage detection more accurate.

Example 5

On the basis of the previous embodiment, as shown in FIG5 , the ADC acquisition circuit of this embodiment includes a sampling chip, a capacitor C3 , a capacitor C4 , a capacitor C5 , a capacitor C6 and a resistor R10 ;

The model of the sampling chip is ADC128S102CIMTX;

The high potential voltage or low high potential voltage output by the signal attenuation circuit is connected to the input port of the sampling chip, the AGND port of the sampling chip is grounded, the DGND port of the sampling chip is connected to the digital ground, the VD port of the sampling chip is connected in series with capacitor C6 and then connected to the digital ground, the capacitor C5 is connected in parallel on both sides of the capacitor C6, and the VD port of the sampling chip is connected to a +3.3V power supply;

One end of capacitor C3 is connected to the VA port of the sampling chip, and the other end is connected in series with resistor R10 and then connected to the digital ground, and the space between capacitor C3 and resistor R10 is grounded; capacitor C4 is connected in parallel on both sides of capacitor C3, and the VA port of the sampling chip serves as the output end of the ADC acquisition circuit.

The idle input port of the sampling chip is grounded.

The voltage signal is firstly transformed by the amplification and attenuation circuit for amplitude conversion, and then collected by the multi-channel ADC acquisition circuit, and the real-time voltage is obtained according to the analog-to-digital conversion result. The detection module is based on digital filtering and linear conversion to reduce the measurement deviation of the entire measurement circuit; In this embodiment, the sampling chip includes: 8 input ports, IN0 port, IN1 port, IN2 port, IN3 port, IN4 port, IN5 port, IN6 port and IN7 port, which can process the collected voltages of 2 groups of traveling wave electrodes in parallel;

The first group of high voltage V1 and low voltage V2 output from the first output terminal and the second output terminal of the first voltage divider circuit and the isolation circuit can be collected by the IN0 port and the IN2 port of the sampling chip; the second group of high voltage V3 and low voltage V4 output from the second voltage divider circuit and the isolation circuit can be collected by the IN4 port and the IN6 port of the sampling chip, and the remaining IN1 port, IN3 port, IN5 port and IN7 port are all grounded.

The detection module is based on digital filtering and linear conversion, which reduces the measurement deviation of the entire measurement circuit and reduces the measurement deviation of the subsequent measurement circuit.

The above-mentioned traveling wave high and low voltage power supply circuit improves the circuit structure based on the existing high and low voltage power supply technology. The high potential and low potential voltages required for the traveling wave signal are provided to the traveling wave electrode through the cooperation of the first DAC power supply module, the second DAC power supply module and the switch output module. The high and low potential voltages are both controlled by DAC. Only the first DAC power supply module and the second DAC power supply module need to be simply adjusted to realize the control of different high and low voltages of the traveling wave. The control method and the overall circuit structure are much simpler than the op amp control.

The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not intended to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims (10)

1. The utility model provides a travelling wave high-low voltage power supply circuit which characterized in that includes:

the first DAC power supply module is used for providing adjustable high-potential voltage and is electrically connected with the switch output module;

the second DAC power supply module is used for providing adjustable low-potential voltage and is electrically connected with the switch output module;

the switch output module is used for connecting the first DAC power supply module with the traveling wave electrode and providing adjustable high-potential voltage for the traveling wave electrode; or connecting the second DAC power supply module with the traveling wave electrode to provide an adjustable low-potential voltage for the traveling wave electrode; the switch output module is electrically connected with the traveling wave electrode;

and the detection module is used for detecting the high potential voltage or the low high potential voltage applied to the traveling wave electrode in real time and is electrically connected with the traveling wave electrode.

2. The traveling wave high and low voltage power supply circuit according to claim 1, wherein the first DAC power supply module and the second DAC power supply module each comprise a DAC control circuit.

3. The traveling wave high and low voltage power supply circuit according to claim 2, wherein said DAC control circuit comprises: the DAC control end, the resistor R0, the resistor R1, the resistor R2, the resistor R3, the resistor R4, the resistor R5, the capacitor C3, the power amplifier and the operational amplifier;

the DAC control end is connected with the resistor R0 and then is connected with the positive input end of the power amplifier, and the negative input end of the power amplifier is connected with the resistor R1 in series and then is connected with analog ground; one end of the resistor R2 is connected with the negative electrode input end of the power amplifier, and the other end of the resistor R is connected with the output end of the power amplifier;

the output end of the power amplifier is connected with the positive input end of the operational amplifier in series with the resistor R4, and the negative input end of the operational amplifier is connected with the analog ground in series with the resistor R3; one end of the resistor R5 is connected with the negative input end of the operational amplifier, the other end of the resistor R5 is connected with the output end of the operational amplifier, the output end of the operational amplifier is connected with the capacitor C3 in series and then is grounded in an analog mode, and the output end of the operational amplifier is used as the output end of the DAC control circuit.

4. A traveling wave high and low voltage power supply circuit according to claim 3, wherein said operational amplifier is of the OPA454 type; the DAC control circuit further comprises a capacitor C1 and a capacitor C2;

the first E/D interface of the operational amplifier is connected with a 105V power supply; one end of the capacitor C1 is connected with a first E/D interface of the operational amplifier, the other end of the capacitor C is connected with a first power interface of the operational amplifier, and the first power interface of the operational amplifier is connected with analog ground; the second power interface of the operational amplifier is connected with a-5V power supply; the second E/D interface of the operational amplifier is connected with a capacitor C2 in series and then is connected with the analog ground.

5. The traveling wave high-low voltage power supply circuit according to claim 1, wherein the detection module comprises a signal attenuation circuit and an ADC acquisition circuit; the signal attenuation circuit comprises the following components electrically connected in sequence: an impedance matching circuit, a voltage dividing circuit and an isolation circuit;

the traveling wave electrode is connected with the input end of the impedance matching circuit, and the output end of the impedance matching circuit is connected to the ADC acquisition circuit through the voltage dividing circuit and the isolation circuit.

6. The traveling wave high and low voltage power supply circuit according to claim 5, wherein said impedance matching circuit comprises: resistor R11, resistor R15, capacitor C9 and voltage follower;

one end of the resistor R11 is connected with the traveling wave electrode, the other end of the resistor R is connected with the positive electrode input end of the voltage follower, the negative electrode input end of the voltage follower is connected with analog ground, and the negative electrode input end of the voltage follower is in short circuit with the output end; the first end of the resistor R15 is connected with the output end of the voltage follower, and the second end of the resistor R15 is used as the output end of the impedance matching circuit and connected with the isolation circuit; one end of the capacitor C9 is connected with the second end of the resistor R15, and the other end of the capacitor C is connected with analog ground.

7. The traveling wave high-low voltage power supply circuit according to claim 6, wherein a first power interface of the voltage follower is connected to a 5V power supply, and a second power interface of the voltage follower is connected to analog ground.

8. The traveling wave high-low voltage power supply circuit according to claim 5, wherein the voltage dividing circuit and the isolation circuit are composed of a first operational amplifier and a peripheral circuit; the model of the first operational amplifier is OPA2356;

the peripheral circuit includes: the first access terminal, the second access terminal, the first output terminal, the second output terminal, the resistor R3, the resistor R4, the resistor R8, the resistor R9, the resistor R11, the resistor R14, the capacitor C1 and the capacitor C2;

the high potential voltage and the low high potential voltage are respectively connected to the first access terminal and the second access terminal;

the first access end is connected with a resistor R14 IN series and then is connected with an In1+ interface of the first operational amplifier; one end of the resistor R9 is connected with an In1+ interface of the first operational amplifier, and the other end of the resistor R9 is connected with a VEE interface of the first operational amplifier; the VEE interface of the first operational amplifier is grounded;

one end of the resistor R3 is connected with an OUT1 interface of the first operational amplifier, and the other end of the resistor R is connected with the capacitor C1 in series and then grounded; the OUT1 interface of the first operational amplifier is IN short circuit with the IN 1-interface, and the first output end is positioned between the resistor R3 and the capacitor C1;

the second access end is connected with a resistor R11 IN series and then is connected with an In2+ interface of the first operational amplifier; one end of the resistor R8 is connected with an In2+ interface of the first operational amplifier, the other end of the resistor R8 is grounded, and a VCC interface of the first operational amplifier is connected with a 5V power supply;

one end of the resistor R4 is connected with the OUT2 interface of the first operational amplifier, the other end of the resistor R4 is connected with the capacitor C2 IN series and then grounded, the OUT2 interface of the first operational amplifier is IN short circuit with the IN2 interface, and the second output end of the resistor R4 is positioned between the resistor R4 and the capacitor C2.

9. The traveling wave high and low voltage power supply circuit according to claim 5, wherein said ADC acquisition circuit comprises: the sampling chip, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6 and the resistor R10;

the model of the sampling chip is ADC128S102CIMTX;

the high potential voltage or the low high potential voltage output by the signal attenuation circuit is connected into an input port of the sampling chip, an AGND port of the sampling chip is grounded, a DGND port of the sampling chip is connected with digital ground, a VD port of the sampling chip is connected with a capacitor C6 in series and then connected with digital ground, a capacitor C5 is connected in parallel to two sides of the capacitor C6, and a VD port of the sampling chip is connected into a 3.3V power supply;

one end of the capacitor C3 is connected with the VA port of the sampling chip, the other end of the capacitor C3 is connected with the resistor R10 in series and then is grounded digitally, and the capacitor C3 and the resistor R10 are grounded indirectly; the capacitor C4 is connected in parallel with two sides of the capacitor C3, and the VA port of the sampling chip is used as the output end of the ADC acquisition circuit.

10. The traveling wave high and low voltage power supply circuit according to claim 1, wherein the idle input port of the sampling chip is grounded.