Data acquisition circuit and equipment of hydrogen permeation electrochemical sensor

Abstract

The utility model provides a data acquisition circuit and equipment of a hydrogen permeation electrochemical sensor, and relates to the technical field of electronic circuits. Comprising a hydrogen permeation electrochemical sensor electrode access circuit, a constant potential circuit with bias voltage, an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, a reference circuit, an amplification circuit, a clock circuit, a core processing circuit, a storage circuit, a power management circuit and an output circuit. The hydrogen permeation electrochemical sensor electrode access circuit comprises a first electrode, a second electrode and a third electrode; the constant potential circuit is used for applying a constant potential within a measuring range between the first electrode and the second electrode; the digital-to-analog conversion circuit is connected with the core processing circuit, and the digital-to-analog conversion circuit regulates voltage and inputs the regulated voltage into the constant potential circuit; the analog-to-digital conversion circuit transmits the voltage signal; the storage circuit is used for storing the collected data; the output circuit is used for outputting the collected data, and the output circuit comprises a serial port transmission mode and a wireless transmission mode.

Description

Technical Field

[0001] The invention relates to the technical field of basic electronic circuits, in particular to a data acquisition circuit and equipment for a hydrogen permeation electrochemical sensor. Background Art

[0002] Hydrogen permeation electrochemical sensor is a sensor used to detect hydrogen concentration. Hydrogen permeation electrochemical sensor plays an important role in industrial production, safety monitoring and environmental protection.

[0003] However, current hydrogen permeation electrochemical sensors mainly use wired transmission to transmit data after collecting data, and current hydrogen permeation electrochemical sensors are often too large to easily collect data in a small space. Summary of the invention

[0004] In order to solve the technical problems that the hydrogen permeation electrochemical sensors in the prior art mainly adopt wired transmission to transmit the data after collecting the data, and the current hydrogen permeation electrochemical sensors are often too large and difficult to collect data in a small space, the present invention provides a data collection circuit and device for a hydrogen permeation electrochemical sensor.

[0005] The technical solution provided by the embodiment of the present invention is as follows:

[0006] A first aspect of an embodiment of the present invention provides a data acquisition circuit for a hydrogen permeation electrochemical sensor, comprising: a hydrogen permeation electrochemical sensor electrode access circuit, a biased constant potential circuit, an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, a reference circuit, an amplifier circuit, a clock circuit, a core processing circuit, a storage circuit, a power management circuit, and an output circuit;

[0007] The hydrogen permeation electrochemical sensor electrode access circuit comprises a first electrode, a second electrode and a third electrode, and the first electrode, the second electrode and the third electrode are connected to a common ground through a coaxial connector;

[0008] The constant potential circuit is used to apply a constant potential within a measuring range between the first electrode and the second electrode, and an output current generated after the constant potential is applied is output between the first electrode and the second electrode;

[0009] The digital-to-analog conversion circuit is connected to the core processing circuit, and the digital-to-analog conversion circuit adjusts the voltage and inputs the adjusted voltage into the constant potential circuit;

[0010] The reference circuit is used as a reference input for the analog-to-digital conversion circuit and the digital-to-analog conversion circuit;

[0011] The amplifier circuit is used to convert the current signal into a voltage signal and amplify the voltage signal;

[0012] The analog-to-digital conversion circuit is connected to the core processing circuit, and the analog-to-digital conversion circuit transmits the amplified voltage signal;

[0013] The clock circuit is connected to the core processing circuit, and the clock circuit is used for automatically measuring data at a fixed time;

[0014] The storage circuit is used to store the collected data;

[0015] The power management circuit is used for supplying power;

[0016] The output circuit is used to output the collected data, and the output circuit includes a serial port transmission mode and a wireless transmission mode.

[0017] A second aspect of the embodiments of the present invention provides a data acquisition device for a hydrogen permeation electrochemical sensor, comprising: a data acquisition circuit for the hydrogen permeation electrochemical sensor according to the first aspect.

[0018] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0019] In the present invention, the data acquisition circuit of the hydrogen permeation electrochemical sensor can be concentrated on a printed circuit board, which is small in size, easy to operate and carry. At the same time, it has a built-in battery and supports wireless transmission, which makes it easy to collect data in a small space. It can accurately measure the hydrogen diffusion flux on the metal surface and the diffusible hydrogen concentration in the metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of a data acquisition circuit for a hydrogen permeation electrochemical sensor provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a reference circuit provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of an analog-to-digital conversion circuit provided by an embodiment of the present invention;

[0024] Figure 4A schematic diagram of the structure of a constant potential circuit provided by an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of a digital-to-analog conversion circuit provided by an embodiment of the present invention.

[0026] Reference numerals:

[0027] 1-electrode access circuit, 2-constant potential circuit, 3-analog-to-digital conversion circuit, 4-digital-to-analog conversion circuit, 5-reference circuit, 6-amplification circuit, 7-clock circuit, 8-core processing circuit, 9-storage circuit, 10-power management circuit, 11-output circuit. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0029] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0030] In the embodiments of the present invention, "image" and "picture" can sometimes be used interchangeably. It should be noted that when the difference between them is not emphasized, the meanings they intend to express are the same. "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be noted that when the difference between them is not emphasized, the meanings they intend to express are the same.

[0031] In the embodiments of the present invention, sometimes the subscripts such as W 1 It may be written in non-subscript form such as W1. When the difference is not emphasized, the meaning is the same.

[0032] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Manual Attached Figure 1 , shows a schematic structural diagram of a data acquisition circuit of a hydrogen permeation electrochemical sensor provided in an embodiment of the present invention.

[0034] Reference Manual Attached Figure 2 , shows a schematic structural diagram of a reference circuit provided by an embodiment of the present invention.

[0035] Reference Manual Attached Figure 3 , shows a schematic structural diagram of an analog-to-digital conversion circuit provided by an embodiment of the present invention.

[0036] Reference Manual Attached Figure 4 , showing a structural schematic diagram of a constant potential circuit provided by an embodiment of the present invention.

[0037] Reference Manual Attached Figure 5 , shows a schematic structural diagram of a digital-to-analog conversion circuit provided in an embodiment of the present invention.

[0038] The embodiment of the present invention provides a data acquisition circuit for a hydrogen permeation electrochemical sensor, comprising: a hydrogen permeation electrochemical sensor electrode access circuit 1, a biased constant potential circuit 2, an analog-to-digital conversion circuit 3, a digital-to-analog conversion circuit 4, a reference circuit 5, an amplifier circuit 6, a clock circuit 7, a core processing circuit 8, a storage circuit 9, a power management circuit 10, and an output circuit 11.

[0039] The hydrogen permeation electrochemical sensor electrode access circuit 1 comprises a first electrode WE, a second electrode RE and a third electrode CE. The first electrode WE, the second electrode RE and the third electrode CE are connected to a common ground through a coaxial connector.

[0040] The constant potential circuit 2 is used to apply a constant potential within a measuring range between the first electrode WE and the second electrode RE, and output current generated after the constant potential is applied is output between the first electrode WE and the second electrode RE.

[0041] It should be noted that the constant potential circuit 2 plays a vital role in the hydrogen permeation electrochemical sensor. It controls the electrochemical reaction by providing a constant potential and generates an output current related to the hydrogen concentration, thereby ensuring the accuracy and reliability of the sensor.

[0042] The digital-to-analog conversion circuit 4 is connected to the core processing circuit 8 . The digital-to-analog conversion circuit 4 adjusts the voltage and inputs the adjusted voltage into the constant potential circuit 2 .

[0043] Different types or models of hydrogen permeation electrochemical sensors often require different constant potentials. The constant potential applied by the constant potential circuit 2 between the first electrode WE and the second electrode RE is adjustable through the digital-to-analog conversion circuit 4, which helps to realize the control of the constant potential circuit 2 of different hydrogen permeation electrochemical sensors. The constant potential of the sensor can be adjusted according to actual needs, which increases the flexibility and versatility of the sensor. It is possible to adapt to different types or models of sensors without replacing the circuit board or redesigning the circuit. The flexibility and versatility of the data acquisition circuit of the hydrogen permeation electrochemical sensor are improved.

[0044] The digital-to-analog conversion circuit 4 automatically adjusts the voltage of the constant potential circuit 2 according to the actual required potential to realize the control of the constant potential circuit 2 of different sensors. The digital-to-analog conversion circuit 4 provides a bias voltage, and the input reference voltage is interactively input through the digital-to-analog conversion chip and the single-chip microcomputer to complete the constant potential input voltage setting. The output voltage of the digital-to-analog conversion circuit 4 is input to the positive input terminal of the constant potential circuit 2 after the operational amplifier to stabilize the voltage.

[0045] The reference circuit 5 is used as a reference input for the analog-to-digital conversion circuit 3 and the digital-to-analog conversion circuit 4. The reference circuit 5 plays a key role in the analog-to-digital conversion and the digital-to-analog conversion circuit 4, and it provides a stable and accurate voltage reference to ensure the accuracy and reliability of the conversion process.

[0046] The amplifier circuit 6 is used to convert the current signal into a voltage signal and amplify the voltage signal.

[0047] The analog-to-digital conversion circuit 3 is connected to the core processing circuit 8, and the analog-to-digital conversion circuit 3 transmits the amplified voltage signal. The present invention adopts a 24-bit analog-to-digital conversion circuit 3, which has high acquisition accuracy and sensitivity, ensuring accurate acquisition of uA-level current or even smaller.

[0048] The clock circuit 7 is connected to the core processing circuit 8, and the clock circuit 7 is used for automatically measuring data at a fixed time.

[0049] The clock circuit 7 generates a series of clock signals, which are usually repeated at a fixed frequency and period, and are used to synchronize the operation of various components in the system. According to the clock signals, the clock circuit 7 can realize the timing and automatic measurement of data. These signals can be square waves, sine waves or other waveforms, depending on the design requirements of the system.

[0050] The storage circuit 9 is used to store the collected data.

[0051] The storage circuit 9 has a built-in SD card for storing the collected data.

[0052] The power management circuit 10 is used for supplying power.

[0053] The power management circuit 10 is input through the USB interface and is responsible for supplying power to the subsequent circuits after linear conversion power output.

[0054] The output circuit 11 is used to output the collected data, and the output circuit 11 includes a serial port transmission mode and a wireless transmission mode.

[0055] In the present invention, the data acquisition circuit of the hydrogen permeation electrochemical sensor can be concentrated on a printed circuit board, which is small in size, easy to operate and carry. At the same time, it has a built-in battery and supports wireless transmission, which makes it easy to collect data in a small space. It can accurately measure the hydrogen diffusion flux on the metal surface and the diffusible hydrogen concentration in the metal.

[0056] In a possible implementation, the constant potential circuit 2 includes an operational amplifier, the digital-to-analog conversion circuit 4 is connected to the input end of the operational amplifier, and the digital-to-analog conversion circuit 4 inputs the regulated voltage to the input end of the operational amplifier.

[0057] It should be noted that the operational amplifier provides current to the third electrode CE to balance the current required by the first electrode WE.

[0058] Among them, the operational amplifier usually has the characteristics of high gain, low offset and low drift, which can enhance the stability and accuracy of the circuit. By inputting the regulated voltage output by the digital-to-analog conversion circuit 4 into the operational amplifier, the performance of the circuit can be further enhanced to ensure the stability and accuracy of the constant potential.

[0059] In the present invention, the digital-to-analog conversion circuit 4 is connected to the operational amplifier, and the regulated voltage is input to the input terminal of the operational amplifier, which can enhance the stability, accuracy and anti-interference ability of the constant potential circuit 2, improve the flexibility and reliability of the circuit, and simplify the design and debugging process.

[0060] In a possible implementation, the constant potential circuit 2 includes: a field effect transistor Q1, a first resistor R25, a second resistor R26, a third resistor R27, a fourth resistor R28, a fifth resistor R29, a sixth resistor R30, a seventh resistor R31, an eighth resistor R32, a ninth resistor R34, a tenth resistor R35, an eleventh resistor R36, a twelfth resistor R37, a thirteenth resistor R40, a first capacitor C47, a second capacitor C48, a third capacitor C50, a fourth capacitor C53, a first operational amplifier U13A, and a second operational amplifier U13B.

[0061] The second electrode RE is connected to the source S of the field effect transistor Q1, and the gate G of the field effect transistor Q1 is connected to the positive electrode of the power supply through the sixth resistor R30. The first electrode WE is connected to the drain D of the field effect transistor Q1, the first electrode WE is connected to the first end of the twelfth resistor R37, the second end of the twelfth resistor R37 is connected to the inverting input end of the second operational amplifier U13B, the non-inverting input end of the second operational amplifier U13B is grounded through the thirteenth resistor R40, the output end of the second operational amplifier U13B is connected to the first end of the fourth capacitor C53, the second end of the fourth capacitor C53 is connected between the twelfth resistor R37 and the inverting input end of the second operational amplifier U13B, the second end of the fourth capacitor C53 is connected to the first end of the seventh resistor R31, the second end of the seventh resistor R31 is connected to the first end of the eighth resistor R32, the second end of the eighth resistor R32 is grounded through the tenth resistor R35, and the second end of the eighth resistor R32 is connected to the output end of the constant potential circuit 2 through the ninth resistor R34 and the eleventh resistor R36.

[0062] The second electrode RE is connected to the first end of the second resistor R26, the second end of the second resistor R26 is connected to the first end of the third resistor R27, the second end of the third resistor R27 is connected to the inverting input end of the first operational amplifier U13A, the output end of the digital-to-analog conversion circuit 4 is connected to the non-inverting input end of the first operational amplifier U13A through the fourth resistor R28, the output end of the digital-to-analog conversion circuit 4 is connected to the first end of the fourth resistor R28, the second end of the fourth resistor R28 is connected to the non-inverting input end of the first operational amplifier U13A, the second end of the fourth resistor R28 is grounded through the fifth resistor R29, the positive power supply end of the first operational amplifier U13A is connected to the positive pole of the power supply, the positive power supply end of the first operational amplifier U13A is grounded through the second capacitor C48, the negative power supply end of the first operational amplifier U13A is connected to the negative pole of the power supply, and the negative power supply end of the first operational amplifier U13A is grounded through the third capacitor C50.

[0063] The third electrode CE is connected to a first end of the first resistor R25. A second end of the first resistor R25 is connected between a second end of the second resistor R26 and a first end of the third resistor R27 via a first capacitor C47. A second end of the first resistor R25 is connected to an output end of the first operational amplifier U13A.

[0064] It should be noted that the first operational amplifier U13A provides current to the third electrode CE to balance the current required by the first electrode WE. The inverting input terminal of the first operational amplifier U13A is connected to the second electrode RE. Since the current on the second electrode RE is extremely small, the first operational amplifier U13A with a bias current less than 5nA is selected. The first operational amplifier U13A requires a swing of ±1.5V, so the first operational amplifier U13A requires a negative power supply.

[0065] In the present invention, the constant potential circuit 2 combines the field effect tube Q1, operational amplifiers U13A, U13B and other components, which can accurately control the size and stability of the constant potential. This precise control helps to ensure the accuracy and reliability of the sensor, thereby improving the accuracy of data acquisition. The operational amplifiers U13A and U13B have the characteristics of high gain and low drift, which can enhance the stability and reliability of the circuit. This is particularly important for applications in long-term operation and harsh environments, and can ensure that the circuit can maintain a stable working state under various working conditions. The use of components such as field effect tube Q1 can improve the anti-interference ability of the circuit and reduce the impact of external interference on the constant potential. This helps to improve the stability and reliability of the sensor system and ensure the accuracy of data acquisition.

[0066] Furthermore, the stability and noise reduction of the control circuit depend on the second resistor R26, the third resistor R27 and the first capacitor C47. Usually, the value of C47 is between 10 and 100 nF.

[0067] In a possible implementation, the first operational amplifier U13A and the second operational amplifier U13B are AD8629.

[0068] In a possible implementation, the model of the analog-to-digital conversion circuit 3 is 24-bit ADS1252U.

[0069] In a possible implementation manner, the storage circuit 9 uses a 32G SD card as the file system.

[0070] In a possible implementation, the digital-to-analog conversion circuit 4 is model 8830ID.

[0071] In a possible implementation manner, the reference circuit 5 model is ADR431BRZ-REEL7.

[0072] In a possible implementation, the power management circuit 10 uses a linear power supply to output a voltage of ±1.5V.

[0073] The beneficial effects brought about by the technical solution provided by the embodiment of the invention include at least:

[0074] In the present invention, the data acquisition circuit of the hydrogen permeation electrochemical sensor can be concentrated on a printed circuit board, which is small in size, easy to operate and carry. At the same time, it has a built-in battery and supports wireless transmission, which makes it easy to collect data in a small space. It can accurately measure the hydrogen diffusion flux on the metal surface and the diffusible hydrogen concentration in the metal.

[0075] Reference Manual Attached Figure 3 , showing a structural schematic diagram of a data acquisition device for a hydrogen permeation electrochemical sensor provided by the present invention.

[0076] The present invention further provides a data acquisition device for a hydrogen permeation electrochemical sensor, comprising: a data acquisition circuit for the hydrogen permeation electrochemical sensor described in the above embodiment.

[0077] The data acquisition device of the hydrogen permeation electrochemical sensor provided by the present invention can achieve the same or similar technical effects as the data acquisition circuit of the hydrogen permeation electrochemical sensor described in the above embodiments. To avoid repetition, the present invention will not elaborate on it.

[0078] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0079] In the present invention, the data acquisition circuit of the hydrogen permeation electrochemical sensor can be concentrated on a printed circuit board, which is small in size, easy to operate and carry. At the same time, it has a built-in battery and supports wireless transmission, which makes it easy to collect data in a small space. It can accurately measure the hydrogen diffusion flux on the metal surface and the diffusible hydrogen concentration in the metal.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0081] There are a few points to note:

[0082] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the general design.

[0083] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of the layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0084] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0085] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A data acquisition circuit for a hydrogen permeation electrochemical sensor, characterized in that: include: Hydrogen permeation electrochemical sensor electrode access circuit, biased constant potential circuit, analog-to-digital conversion circuit, digital-to-analog conversion circuit, reference circuit, amplifier circuit, clock circuit, core processing circuit, storage circuit, power management circuit and output circuit; The hydrogen permeation electrochemical sensor electrode access circuit comprises a first electrode, a second electrode and a third electrode, and the first electrode, the second electrode and the third electrode are connected to a common ground through a coaxial connector; The constant potential circuit is used to apply a constant potential within a measuring range between the first electrode and the second electrode, and an output current generated after the constant potential is applied is output between the first electrode and the second electrode; The digital-to-analog conversion circuit is connected to the core processing circuit, and the digital-to-analog conversion circuit adjusts the voltage and inputs the adjusted voltage into the constant potential circuit; The reference circuit is used as a reference input for the analog-to-digital conversion circuit and the digital-to-analog conversion circuit; The amplifier circuit is used to convert the current signal into a voltage signal and amplify the voltage signal; The analog-to-digital conversion circuit is connected to the core processing circuit, and the analog-to-digital conversion circuit transmits the amplified voltage signal; The clock circuit is connected to the core processing circuit, and the clock circuit is used for automatically measuring data at a fixed time; The storage circuit is used to store the collected data; The power management circuit is used for supplying power; The output circuit is used to output the collected data, and the output circuit includes a serial port transmission mode and a wireless transmission mode.

2. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The constant potential circuit includes an operational amplifier, the digital-to-analog conversion circuit is connected to the input end of the operational amplifier, and the digital-to-analog conversion circuit inputs the regulated voltage to the input end of the operational amplifier.

3. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The constant potential circuit includes: a field effect transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first operational amplifier and a second operational amplifier; The second electrode is connected to the source of the field effect tube, and the gate of the field effect tube is connected to the positive electrode of the power supply through the sixth resistor; the first electrode is connected to the drain of the field effect tube, the first electrode is connected to the first end of the twelfth resistor, the second end of the twelfth resistor is connected to the inverting input end of the second operational amplifier, the non-inverting input end of the second operational amplifier is grounded through the thirteenth resistor, the output end of the second operational amplifier is connected to the first end of the fourth capacitor, the second end of the fourth capacitor is connected between the twelfth resistor and the inverting input end of the second operational amplifier, the second end of the fourth capacitor is connected to the first end of the seventh resistor, the second end of the seventh resistor is connected to the first end of the eighth resistor, the second end of the eighth resistor is grounded through the tenth resistor, and the second end of the eighth resistor is connected to the output end of the constant potential circuit through the ninth resistor and the eleventh resistor; The second electrode is connected to the first end of the second resistor, the second end of the second resistor is connected to the first end of the third resistor, the second end of the third resistor is connected to the inverting input end of the first operational amplifier, the output end of the digital-to-analog conversion circuit is connected to the non-inverting input end of the first operational amplifier through the fourth resistor, the output end of the digital-to-analog conversion circuit is connected to the first end of the fourth resistor, the second end of the fourth resistor is connected to the non-inverting input end of the first operational amplifier, the second end of the fourth resistor is grounded through the fifth resistor, the positive power supply end of the first operational amplifier is connected to the positive electrode of the power supply, the positive power supply end of the first operational amplifier is grounded through the second capacitor, the negative power supply end of the first operational amplifier is connected to the negative electrode of the power supply, and the negative power supply end of the first operational amplifier is grounded through the third capacitor; The third electrode is connected to the first end of the first resistor, the second end of the first resistor is connected between the second end of the second resistor and the first end of the third resistor through the first capacitor, and the second end of the first resistor is connected to the output end of the first operational amplifier.

4. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 3, characterized in that: The models of the first operational amplifier and the second operational amplifier are AD8629.

5. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The model of the analog-to-digital conversion circuit is 24-bit ADS1252U.

6. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The storage circuit uses a 32G SD card as the file system.

7. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The digital-to-analog conversion circuit model is 8830ID.

8. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The reference circuit model is ADR431BRZ-REEL7.

9. The data acquisition circuit of the hydrogen permeation electrochemical sensor according to claim 1, characterized in that: The power management circuit adopts a linear power supply to output a ±1.5V voltage.

10. A data acquisition device for a hydrogen permeation electrochemical sensor, characterized in that: include: The data acquisition circuit of the hydrogen permeation electrochemical sensor according to any one of claims 1 to 9.

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