CN117554569A

CN117554569A - Method and device for checking hydrogen sensor, readable storage medium and checking system

Info

Publication number: CN117554569A
Application number: CN202311545276.3A
Authority: CN
Inventors: 王杰; 兰新生; 李富祥; 王燕
Original assignee: Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
Current assignee: Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-02-13

Abstract

The application discloses a method and a device for checking a hydrogen sensor, a readable storage medium and a checking system. According to the method, not only is the automatic test of the dynamic response time and the corresponding transient response time of the hydrogen sensor realized, but also the hydrogen concentration change condition of the hydrogen sensor in the actual working environment is simulated by taking the oil sample of dynamic hydrogen production as a calibration condition, so that the response time of the hydrogen sensor is more real and accurate, and the accuracy of the test result is improved.

Description

Method and device for checking hydrogen sensor, readable storage medium and checking system

Technical Field

The present disclosure relates to the field of information management technologies, and in particular, to a method and an apparatus for inspecting a hydrogen sensor, a readable storage medium, and an inspection system.

Background

The transformer insulating oil is cracked under the thermal and electrical conditions to produce gases such as methane, ethylene, ethane, acetylene, hydrogen, carbon monoxide, carbon dioxide and the like. The gases generated by different fault types are different, but hydrogen is generated by both thermal faults and electrical faults, so that monitoring the continuous change of the hydrogen content in the insulating oil of the transformer is important characteristic information for judging whether the transformer has faults or not.

At present, a sensor for monitoring hydrogen in transformer oil is a palladium doped sensor, and can continuously monitor the change of the hydrogen content in the transformer oil, but as the sensor is a nonlinear sensor, the temperature drift phenomenon is easy to occur under the influence of temperature, and the monitoring of the content of dissolved hydrogen components in the transformer oil is influenced. Therefore, how to provide a method for accurately calibrating a hydrogen sensor is a problem to be solved.

Disclosure of Invention

In view of the above, the present application provides a method, an apparatus, a readable storage medium, and a system for inspecting a hydrogen sensor, which can determine a dynamic response time and a first transient response time of the hydrogen sensor automatically detected, and perform an anomaly prompt, thereby ensuring the accuracy of the hydrogen sensor.

According to one aspect of the present application, there is provided a method of inspecting a hydrogen sensor, comprising:

controlling a hydrogen sensor in a first reference state to detect an inspection oil sample containing hydrogen with a first preset concentration, and timing a first detection duration of the hydrogen sensor in the first reference state, wherein the duration of the hydrogen sensor in the first oil sample is longer than or equal to a preset stable duration, the hydrogen sensor is determined to be in the first reference state, the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L, and the hydrogen flow rate is a preset flow rate;

If the hydrogen concentration output by the hydrogen sensor in the first reference state enters a stable stage, stopping timing the first detection duration, and determining the first detection duration as the dynamic response time of the hydrogen sensor;

controlling a hydrogen sensor in a second reference state to detect an inspection oil sample containing hydrogen with a second preset concentration, and timing a second detection duration of the hydrogen sensor in the second reference state, wherein the hydrogen sensor is in a detection process of the hydrogen sensor in the second oil sample, the hydrogen sensor is determined to be in the second reference state, the second oil sample is an oil sample with the hydrogen concentration of a third preset concentration and the hydrogen flow rate of a preset flow rate, and the third preset concentration is smaller than the second preset concentration;

if the hydrogen concentration output by the hydrogen sensor in the second reference state enters the growth stage, stopping timing the second detection duration, and determining the second detection duration as the first transient response time of the hydrogen sensor;

and if the dynamic response time or the first transient response time exceeds the corresponding preset parameter range, outputting first prompt information.

Optionally, the method for testing a hydrogen sensor further comprises:

controlling a hydrogen sensor in a third reference state to detect an inspection oil sample containing hydrogen with a first preset concentration, and timing a third detection duration of the hydrogen sensor in the third reference state, wherein the duration of the hydrogen sensor in the third oil sample is longer than or equal to a preset stable duration, the hydrogen sensor is determined to be in the third reference state, and the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L;

If the hydrogen concentration output by the hydrogen sensor in the third reference state enters a stable stage, stopping timing the third detection duration, and determining the third detection duration as the static response time of the hydrogen sensor;

controlling a hydrogen sensor in a fourth reference state to detect an inspection oil sample containing hydrogen with a second preset concentration, and timing a fourth detection duration of the hydrogen sensor in the fourth reference state, wherein the hydrogen sensor is in a detection process of the hydrogen sensor in the fourth reference state, and determining that the hydrogen sensor is in the fourth reference state, and the fourth oil sample is an oil sample with the hydrogen concentration of a third preset concentration;

if the hydrogen concentration output by the hydrogen sensor in the fourth reference state enters the growth stage, stopping timing the fourth detection duration, and determining the fourth detection duration as the second transient response time of the hydrogen sensor;

and if the static response time or the second transient response time exceeds the corresponding preset parameter range, outputting second prompt information.

Optionally, the method for testing a hydrogen sensor further comprises:

determining the difference value between the hydrogen concentration output by the hydrogen sensor at the current sampling time and the hydrogen concentration output by the hydrogen sensor at the previous sampling time;

If the number of times that the absolute value of the difference value is smaller than or equal to the first threshold value is larger than the preset number of times, determining that the hydrogen concentration enters a stabilization stage;

if the absolute value of the difference is greater than or equal to the second threshold, determining that the hydrogen concentration enters the growth phase.

Optionally, the method for testing a hydrogen sensor further comprises:

controlling a hydrogen sensor to detect a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions to obtain the test hydrogen concentration of the test oil sample under different environmental conditions after entering a stable stage, wherein the fourth preset concentration is greater than or equal to 50 mu L/L;

acquiring the hydrogen reference concentration of a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions;

determining a measurement error of the hydrogen sensor under any environmental condition according to the test hydrogen concentration and the hydrogen reference concentration under any environmental condition, wherein the measurement error comprises an absolute error and a relative error;

generating test curves of the hydrogen sensor under different environmental conditions according to measurement errors under different environmental conditions;

and determining the performance influence factors of the hydrogen sensor according to the test curve.

Optionally, the environmental conditions include at least one of: oil sample temperature, oil sample pressure, oil sample flow rate, and hydrogen concentration contained in the oil sample.

Optionally, the method for testing a hydrogen sensor further comprises:

controlling a hydrogen sensor to detect the target detection times of the detection oil sample containing the hydrogen with the fourth preset concentration to obtain the hydrogen concentration of the detection oil sample with the target detection times, wherein the fourth preset concentration is greater than or equal to 50 mu L/L;

and determining the relative standard deviation of the hydrogen sensor according to the hydrogen concentration of the test oil sample of the target test times.

According to another aspect of the present application, there is provided a test device for a hydrogen sensor, including:

the control module is used for controlling the hydrogen sensor in the first reference state to detect a detection oil sample containing hydrogen with a first preset concentration, wherein the time length of the hydrogen sensor in the first oil sample is longer than or equal to the preset stable time length, the hydrogen sensor is determined to be in the first reference state, the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L, and the hydrogen flow rate is the preset flow rate;

the detection module is used for timing a first detection duration of the hydrogen sensor in a first reference state; if the concentration of the hydrogen output by the hydrogen sensor in the first reference state enters a stable stage, stopping timing the first detection duration, and determining the first detection duration as the dynamic response time of the hydrogen sensor;

The control module is further used for controlling the hydrogen sensor in the second reference state to detect an inspection oil sample containing hydrogen with a second preset concentration, wherein the hydrogen sensor is in the detection process of the second oil sample, the hydrogen sensor is determined to be in the second reference state, the second oil sample is an oil sample with the hydrogen concentration of a third preset concentration and the hydrogen flow rate of a preset flow rate, and the third preset concentration is smaller than the second preset concentration;

the detection module is also used for timing a second detection duration of the hydrogen sensor in a second reference state; if the hydrogen concentration output by the hydrogen sensor in the second reference state enters the growth stage, stopping timing the second detection duration, and determining the second detection duration as the first transient response time of the hydrogen sensor;

the prompting module is used for outputting first prompting information if the dynamic response time or the first transient response time exceeds the corresponding preset parameter range.

Optionally, the control module is further configured to control the hydrogen sensor in the third reference state to detect a test oil sample containing hydrogen with a first preset concentration, and time a third detection duration of the hydrogen sensor in the third reference state, where a duration of the hydrogen sensor in the third oil sample is greater than or equal to a preset stable duration, and determine that the hydrogen sensor is in the third reference state, where the first oil sample is an oil sample with a hydrogen concentration of 0 μl/L;

The detection module is further used for stopping timing the third detection duration if the hydrogen concentration output by the hydrogen sensor in the third reference state enters a stable stage, and determining the third detection duration as the static response time of the hydrogen sensor;

the control module is further used for controlling the hydrogen sensor in the fourth reference state to detect the detection oil sample containing the hydrogen with the second preset concentration, and timing the fourth detection duration of the hydrogen sensor in the fourth reference state, wherein the hydrogen sensor is in the detection process of the hydrogen sensor in the fourth reference state, and the hydrogen sensor is determined to be in the fourth reference state, and the fourth oil sample is an oil sample with the hydrogen concentration of the third preset concentration;

the detection module is further used for stopping timing the fourth detection duration and determining the fourth detection duration as the second transient response time of the hydrogen sensor if the hydrogen concentration output by the hydrogen sensor in the fourth reference state enters the growth stage;

the prompting module is further configured to output a second prompting message if the static response time or the second transient response time exceeds the corresponding preset parameter range.

Optionally, the inspection module is further configured to determine a difference between the hydrogen concentration output by the hydrogen sensor at the current sampling time and the hydrogen concentration output by the hydrogen sensor at the previous sampling time; if the number of times that the absolute value of the difference value is smaller than or equal to the first threshold value is larger than the preset number of times, determining that the hydrogen concentration enters a stabilization stage; if the absolute value of the difference is greater than or equal to the second threshold, determining that the hydrogen concentration enters the growth phase.

Optionally, the control module is further configured to control the hydrogen sensor to detect a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions, so as to obtain a test hydrogen concentration of the test oil sample under different environmental conditions after entering the stable stage, where the fourth preset concentration is greater than or equal to 50 μl/L;

the testing module is also used for obtaining the hydrogen reference concentration of the testing oil sample containing the hydrogen with the fourth preset concentration under different environmental conditions; determining a measurement error of the hydrogen sensor under any environmental condition according to the test hydrogen concentration and the hydrogen reference concentration under any environmental condition, wherein the measurement error comprises an absolute error and a relative error; generating test curves of the hydrogen sensor under different environmental conditions according to measurement errors under different environmental conditions; and determining a performance influencing factor of the hydrogen sensor according to the test curve.

Optionally, the control module is further configured to control the hydrogen sensor to detect a target number of times of detection on the test oil sample containing the hydrogen with the fourth preset concentration, so as to obtain the hydrogen concentration of the test oil sample with the target number of times of detection, where the fourth preset concentration is greater than or equal to 50 μl/L;

The inspection module is also used for determining the relative standard deviation of the hydrogen sensor according to the hydrogen concentration of the inspected oil sample of the target inspection times.

According to still another aspect of the present application, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the above-described hydrogen sensor inspection method.

According to yet another aspect of the present application, there is provided an inspection system comprising:

the flow cell is sealed by the end cover and is used for storing a test oil sample so as to enable the hydrogen sensor to detect the hydrogen concentration of the test oil sample;

the oil sample storage device is communicated with the flow cell through a connecting pipe and is used for conveying the inspection oil sample to the flow cell;

and the checking device is electrically connected with the hydrogen sensor and realizes the steps of the checking method of the hydrogen sensor when the checking device is executed.

Optionally, the inspection system further comprises:

the heating component is arranged around the flow cell and is in communication connection with the inspection equipment, and the heating component is used for heating the flow cell;

the pressure controller is arranged in the inspection container and is in communication connection with the inspection equipment, and the pressure controller is used for changing the pressure in the flow cell;

And the valve assembly is arranged on the connecting pipe and is in communication connection with the inspection equipment, and the valve assembly is used for controlling the flow speed of the oil sample conveyed to the flow cell by the inspection oil sample.

By means of the technical scheme, after the hydrogen sensor is calibrated by taking the first oil sample with the hydrogen concentration of 0 mu L/L and the flow volume of the generated hydrogen per minute as the preset flow speed as the initial condition, the hydrogen sensor is placed into the to-be-detected test oil sample, and the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the first preset concentration. When the hydrogen concentration detected by the hydrogen sensor is stable, the first detection duration from the beginning of the detection of the test oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the stable phase is taken as the dynamic response time of the hydrogen sensor. Similarly, in the process that the hydrogen sensor detects the second oil sample containing the lower hydrogen concentration and the flowing volume of the generated hydrogen per minute is the preset flow rate, the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the second preset concentration so as to test the sensitivity of the hydrogen sensor when the oil sample is suddenly changed. And after the hydrogen concentration detected by the hydrogen sensor increases, taking a second detection duration from the beginning of the detection oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the increasing stage as a first transient response time in a dynamic scene of the hydrogen sensor. Therefore, the dynamic hydrogen-producing oil sample is used as a calibration condition to simulate the hydrogen concentration change condition of the hydrogen sensor in the actual working environment, so that the response time of the hydrogen sensor is more real and accurate, and the accuracy of the test result is improved. Further, when the dynamic response time or the first transient response time does not meet the required preset parameter range, outputting first prompt information. Therefore, the automatic test of the response time of the hydrogen sensor is realized, the sensitivity of the hydrogen sensor to the change of the hydrogen concentration is checked through the dynamic response time and the first transient response time, and a user is timely prompted when the sensitivity is abnormal, so that the user can timely debug the abnormal hydrogen sensor, further, the fluctuation or drift of the measurement result of the hydrogen sensor is effectively prevented, the measurement accuracy of the hydrogen sensor is ensured, and the response speed and the performance of the hydrogen sensor are enhanced.

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

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 shows one of the flow charts of the method for inspecting a hydrogen sensor provided in the embodiments of the present application;

FIG. 2 is a second flow chart of a hydrogen sensor testing device according to an embodiment of the present disclosure;

FIG. 3 shows one of schematic diagrams of hydrogen concentration detected by the hydrogen sensor provided in the embodiments of the present application;

FIG. 4 is a second schematic diagram showing the hydrogen concentration detected by the hydrogen sensor according to the embodiment of the present application;

fig. 5 is a block diagram of a hydrogen sensor inspection device according to an embodiment of the present application.

Detailed Description

The present application will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of illustrating the present application and are not to be construed as limiting the present application.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly fused. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.

In this embodiment, there is provided a method for inspecting a hydrogen sensor, as shown in fig. 1, the method including:

and 101, controlling the hydrogen sensor in the first reference state to detect a test oil sample containing hydrogen with a first preset concentration, and timing a first detection duration of the hydrogen sensor in the first reference state.

The time length of the hydrogen sensor in the first oil sample is greater than or equal to the preset stable time length, the hydrogen sensor is determined to be in a first reference state, the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L, and the hydrogen flow rate is the preset flow rate. The preset stability duration is used for judging whether the hydrogen concentration of the first oil sample detected by the hydrogen sensor is stable or not so as to avoid errors caused by detection fluctuation, and the preset stability duration can be reasonably set according to the type and hydrogen production rate of the first oil sample and the known sensitivity of the hydrogen sensor, for example, the preset stability duration is set to 40min, 120min, 500min and the like. The first preset concentration and the preset flow rate can be reasonably set according to actual application scenes. The above parameters are not particularly limited in the embodiments of the present application.

And 102, stopping timing the first detection duration if the hydrogen concentration output by the hydrogen sensor in the first reference state enters a stable stage, and determining the first detection duration as the dynamic response time of the hydrogen sensor.

Where the response time refers to the time taken from the reference state to the steady state.

In this embodiment, after the hydrogen sensor is calibrated by using a first oil sample with a hydrogen concentration of 0 μl/L and a flow volume of generated hydrogen per minute as a preset flow rate as an initial condition, the hydrogen sensor is placed into a test oil sample to be tested, and the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the first preset concentration, so as to obtain the hydrogen concentration at different sampling moments. When the hydrogen concentration detected by the hydrogen sensor is stable, the first detection duration from the beginning of the detection of the test oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the stable phase is taken as the dynamic response time of the hydrogen sensor. Therefore, the influence on the test caused by the external interference factor of the real-time hydrogen production of the oil sample is fully considered, the hydrogen concentration change condition of the hydrogen sensor in the actual working environment is simulated by taking the dynamic hydrogen production oil sample as a calibration condition, the test error is effectively reduced, the response time of the hydrogen sensor is more real and accurate, and the accuracy of the test result is improved.

For example, a test oil sample with a hydrogen concentration of 34.6 μl/L is prepared, a hydrogen sensor is placed in a first oil sample with a hydrogen concentration of 0 μl/L and a hydrogen flow rate of 300mL/min, and after the hydrogen sensor is stabilized for 30min, the oil sample storage device is controlled to inject the test oil sample into the flow cell, and meanwhile, the hydrogen sensor is started to monitor and time so as to perform a test of hydrogen response time. And (5) when the hydrogen sensor reaches the stable indication value, finishing timing, and recording the time period as the dynamic response time.

Further, as a refinement and extension of the specific implementation of the above embodiment, for fully explaining the specific implementation process of the present embodiment, the method for inspecting a hydrogen sensor further includes: determining the difference value between the hydrogen concentration output by the hydrogen sensor at the current sampling time and the hydrogen concentration output by the hydrogen sensor at the previous sampling time; if the number of times that the absolute value of the difference value is smaller than or equal to the first threshold value is larger than the preset number of times, determining that the hydrogen concentration enters a stable stage.

The first threshold and the preset times can be set reasonably according to the inspection precision, and the embodiment of the application is not limited specifically.

In this embodiment, in the process of detecting the test oil sample by the hydrogen sensor in the first reference state, if the absolute value of the difference between the hydrogen concentration detected at the current sampling time and the hydrogen concentration detected at the previous sampling time is smaller than or equal to the first threshold value, which indicates that the hydrogen concentration obtained at different sampling times has changed slightly, the hydrogen concentration change has already tended to be stable, and the number of times that the absolute value of the difference is smaller than or equal to the first threshold value starts to be counted. When the absolute value of the difference is smaller than or equal to the first threshold value, the number of times is larger than the preset number of times, which indicates that the concentration detection is in a stable state for a long time, and the hydrogen concentration is judged to enter a stable stage. Therefore, the influence of short-time fluctuation on the judgment of the stable phase can be eliminated through difference judgment and frequency statistics, and the accuracy of judging whether the hydrogen concentration enters the stable phase is improved.

And 103, controlling the hydrogen sensor in the second reference state to detect the detection oil sample containing the hydrogen with the second preset concentration, and timing the second detection duration of the hydrogen sensor in the second reference state.

The hydrogen sensor is in a second reference state in the detection process of the second oil sample, the second oil sample is an oil sample with the hydrogen concentration being a third preset concentration and the hydrogen flow rate being a preset flow rate. It will be appreciated that the third predetermined concentration is much less than the second predetermined concentration, thereby creating a significant hydrogen concentration variation that minimizes the inspection error.

And 104, stopping timing the second detection duration if the hydrogen concentration output by the hydrogen sensor in the second reference state enters the growth stage, and determining the second detection duration as the first transient response time of the hydrogen sensor.

Wherein transient response time refers to the time required from one steady state to another certain relatively steady state.

In this embodiment, during the process that the hydrogen sensor detects the second oil sample containing the lower hydrogen concentration and the generated hydrogen flows at the preset flow rate per minute, the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen of the second preset concentration, so as to test the sensitivity of the hydrogen sensor when the oil sample suddenly changes. And after the hydrogen concentration detected by the hydrogen sensor increases, taking a second detection duration from the beginning of the detection oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the increasing stage as a first transient response time in a dynamic scene of the hydrogen sensor. On the one hand, by using an oil sample with a lower hydrogen concentration for initial calibration, the detection accuracy of the sensor for low-concentration hydrogen can be ensured. On the other hand, the dynamic hydrogen production oil sample is used as a calibration condition, so that the change of the hydrogen concentration in a real working environment can be simulated, the detection error is effectively reduced, and the response capability and stability of the hydrogen sensor in a dynamic scene can be accurately detected.

Further, as a refinement and extension of the specific implementation of the above embodiment, for fully explaining the specific implementation process of the present embodiment, the method for inspecting a hydrogen sensor further includes: determining the difference value between the hydrogen concentration output by the hydrogen sensor at the current sampling time and the hydrogen concentration output by the hydrogen sensor at the previous sampling time; if the absolute value of the difference is greater than or equal to the second threshold, determining that the hydrogen concentration enters the growth phase.

The second threshold may be set reasonably according to a concentration difference between the third preset concentration and the second preset concentration and a hydrogen flow rate of the test oil sample, and the embodiment of the application is not limited specifically.

In this embodiment, during the process of detecting the test oil sample by the hydrogen sensor in the second reference state, if the absolute value of the difference between the hydrogen concentration detected at the current sampling time and the hydrogen concentration detected at the previous sampling time is greater than or equal to the second threshold value, which indicates that the hydrogen concentration obtained at different sampling times has changed greatly, the hydrogen concentration change already conforms to the hydrogen concentration difference between the second oil sample and the test oil sample, and then it is determined that the hydrogen concentration enters the growth stage. Therefore, by setting the second threshold value, whether the hydrogen concentration starts to increase can be rapidly judged, so that concentration change processes of different oil samples can be timely perceived, and the test accuracy of the test transient response time is improved.

Step 105, if the dynamic response time or the first transient response time exceeds the corresponding preset parameter range, outputting a first prompt message.

The preset parameter range corresponding to the dynamic response time and the preset parameter range corresponding to the first transient response time may be different, and the preset parameter range is reasonably set according to the inspection requirement of the hydrogen sensor.

According to the method for testing the hydrogen sensor, after the hydrogen sensor is calibrated by taking the first oil sample with the hydrogen concentration of 0 mu L/L and the flow volume of generated hydrogen per minute as the preset flow speed as the initial condition, the hydrogen sensor is placed into the test oil sample to be tested, and the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the first preset concentration. When the hydrogen concentration detected by the hydrogen sensor is stable, the first detection duration from the beginning of the detection of the test oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the stable phase is taken as the dynamic response time of the hydrogen sensor. Similarly, the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the second preset concentration after the hydrogen sensor is calibrated by taking the second oil sample containing the lower hydrogen concentration and the generated hydrogen with the flowing volume per minute as the preset flow rate as the initial condition. And after the hydrogen concentration detected by the hydrogen sensor increases, taking a second detection duration from the beginning of the detection oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the increasing stage as a first transient response time in a dynamic scene of the hydrogen sensor. Therefore, the dynamic hydrogen-producing oil sample is used as a calibration condition to simulate the hydrogen concentration change condition of the hydrogen sensor in the actual working environment, so that the response time of the hydrogen sensor is more real and accurate, and the accuracy of the test result is improved. Further, when the dynamic response time or the first transient response time does not meet the required preset parameter range, outputting first prompt information. Therefore, the sensitivity of the hydrogen sensor to the change of the hydrogen concentration is checked through the dynamic response time and the first transient response time, and a user is timely prompted when the sensitivity is abnormal, so that the user can timely debug the abnormal hydrogen sensor, further, fluctuation or drift of the measurement result of the hydrogen sensor is effectively prevented, the measurement accuracy of the hydrogen sensor is ensured, and the response speed and performance of the hydrogen sensor are enhanced.

In this embodiment, there is provided a method for inspecting a hydrogen sensor, as shown in fig. 2, the method including:

step 201, controlling the hydrogen sensor in the third reference state to detect the test oil sample containing the hydrogen with the first preset concentration, and timing the third detection duration of the hydrogen sensor in the third reference state.

The time length of the hydrogen sensor in the third oil sample is greater than or equal to the preset stable time length, the hydrogen sensor is determined to be in a third reference state, and the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L. The preset stability duration is used for judging whether the hydrogen concentration of the first oil sample detected by the hydrogen sensor is stable or not so as to avoid errors caused by detection fluctuation, and the preset stability duration can be reasonably set according to the type and hydrogen production rate of the first oil sample and the known sensitivity of the hydrogen sensor, for example, the preset stability duration is set to 40min, 120min, 500min and the like. The first preset concentration and the preset flow rate can be reasonably set according to actual application scenes. The above parameters are not particularly limited in the embodiments of the present application.

And 202, stopping timing the third detection duration if the hydrogen concentration output by the hydrogen sensor in the third reference state enters a stable stage, and determining the third detection duration as the static response time of the hydrogen sensor.

In this embodiment, the hydrogen sensor is calibrated by using a third oil sample with a hydrogen concentration of 0 μl/L as an initial condition, so that the hydrogen sensor is in a zeroing state, then the hydrogen sensor is placed in a test oil sample to be tested, and the hydrogen sensor is controlled to detect the test oil sample containing hydrogen with a first preset concentration, so as to obtain the hydrogen concentrations at different sampling moments. After the hydrogen concentration detected by the hydrogen sensor is stable, the first detection duration from the start of detecting the test oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the stable phase is taken as the static response time of the hydrogen sensor. Therefore, the hydrogen sensor is zeroed by taking the oil sample with the hydrogen concentration of 0 mu L/L as a calibration condition, so that the sensitivity of the hydrogen sensor to hydrogen in the test oil sample is improved, the requirement on the test oil sample is reduced on the basis of obtaining static response time in a shorter time, the time and difficulty required by testing the hydrogen sensor are reduced, and the test efficiency of the hydrogen sensor is improved.

For example, a test oil sample with a hydrogen concentration of 34.6 μl/L is prepared, a hydrogen sensor is placed in a third oil sample with a hydrogen concentration of 0 μl/L, after the hydrogen sensor is stabilized for 30min, the oil sample storage device is controlled to inject the test oil sample into the flow cell, and meanwhile, the hydrogen sensor is started to monitor and time so as to perform a test of hydrogen response time. And (5) when the hydrogen sensor reaches the stable indication value, finishing timing, and recording the time period as the dynamic response time. As shown in fig. 3, the time required for the hydrogen sensor to start testing and reach the test stability is about 30min, and the static response time of the hydrogen sensor is 30min.

In this embodiment, in the process of detecting the test oil sample by the hydrogen sensor in the third reference state, if the absolute value of the difference between the hydrogen concentration detected at the current sampling time and the hydrogen concentration detected at the previous sampling time is smaller than or equal to the first threshold, it is indicated that the hydrogen concentration obtained at different sampling times has changed slightly, the hydrogen concentration change has already tended to be stable, and the number of times that the absolute value of the difference is smaller than or equal to the first threshold is counted. When the absolute value of the difference is smaller than or equal to the first threshold value, the number of times is larger than the preset number of times, which indicates that the concentration detection is in a stable state for a long time, and the hydrogen concentration is judged to enter a stable stage. Therefore, the influence of short-time fluctuation on the judgment of the stable phase can be eliminated through difference judgment and frequency statistics, and the accuracy of judging whether the hydrogen concentration enters the stable phase is improved.

And 203, controlling the hydrogen sensor in the fourth reference state to detect the detection oil sample containing the hydrogen with the second preset concentration, and timing the fourth detection duration of the hydrogen sensor in the fourth reference state.

And determining that the hydrogen sensor is in a fourth reference state in the detection process of the hydrogen sensor in a fourth oil sample, wherein the fourth oil sample is an oil sample with the hydrogen concentration of a third preset concentration. It will be appreciated that the third predetermined concentration is much less than the second predetermined concentration, thereby creating a significant hydrogen concentration differential, minimizing inspection errors.

And 204, stopping timing the fourth detection duration if the hydrogen concentration output by the hydrogen sensor in the fourth reference state enters the growth stage, and determining the fourth detection duration as the second transient response time of the hydrogen sensor.

In this embodiment, during the process of detecting the fourth oil sample containing the lower hydrogen concentration by the hydrogen sensor, the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen gas of the second preset concentration, so as to test the sensitivity of the hydrogen sensor when the oil sample suddenly changes. And after the hydrogen concentration detected by the hydrogen sensor increases, taking a second detection duration from the beginning of the detection oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the increasing stage as a second transient response time in the dynamic scene of the hydrogen sensor. On the one hand, by using an oil sample with a lower hydrogen concentration for initial calibration, the detection accuracy of the sensor for low-concentration hydrogen can be ensured. On the other hand, the hydrogen sensor is zeroed by taking the oil sample with the hydrogen concentration of 0 mu L/L as a calibration condition, so that the sensitivity of the hydrogen sensor to hydrogen in the test oil sample is improved, the requirement on the test oil sample is reduced on the basis of obtaining static response time in a shorter time, the time and difficulty required by testing the hydrogen sensor are reduced, and the test efficiency of the hydrogen sensor is improved.

For a specific example, during testing of an oil sample a (at a concentration of 34.6. Mu.L/L), the oil sample storage device was controlled to inject a high concentration b oil sample (at a concentration of 354.5. Mu.L/L) into the flow cell. As shown in FIG. 4, the time of starting the injection of the b-oil sample was recorded as 13:53:39, and the corresponding hydrogen sensor detected a hydrogen concentration of 39.0317. Mu.L/L. At a time of 13:54:39, the hydrogen concentration was 39.4656. Mu.L/L. At a time of 13:55:39, the hydrogen concentration was 39.9071. Mu.L/L. At a time of 13:56:39, the hydrogen concentration was increased steeply to 176.244. Mu.L/L. When the hydrogen concentration is 34.6 mu L/L, and the high-concentration oil sample is switched from the low concentration in the test process, the transient response time of the hydrogen sensor is 3min. The hydrogen sensor test period can be set more accurately through the static response time and the transient response time.

In this embodiment, in the process of detecting the test oil sample by the hydrogen sensor in the fourth reference state, if the absolute value of the difference between the hydrogen concentration detected at the current sampling time and the hydrogen concentration detected at the previous sampling time is greater than or equal to the second threshold value, which indicates that the hydrogen concentration obtained at different sampling times has changed greatly, the hydrogen concentration change already conforms to the hydrogen concentration difference between the fourth oil sample and the test oil sample, and then it is determined that the hydrogen concentration enters the growth stage. Therefore, by setting the second threshold value, whether the hydrogen concentration starts to increase can be rapidly judged, so that concentration change processes of different oil samples can be timely perceived, and the test accuracy of the test transient response time is improved.

Step 205, if the static response time or the second transient response time exceeds the corresponding preset parameter range, outputting a second prompt message.

In this embodiment, when the static response time or the second transient response time does not meet the required preset parameter range, the second prompt message is output. Therefore, the sensitivity of the hydrogen sensor is rapidly checked through the static response time and the second transient response time, and the user is timely prompted when the sensitivity is abnormal, so that the user can timely debug the abnormal hydrogen sensor, further, fluctuation or drift of the measurement result of the hydrogen sensor is effectively prevented, the measurement accuracy of the hydrogen sensor is ensured, and the response speed and performance of the hydrogen sensor are enhanced.

It can be appreciated that, since the static response time can roughly reflect the sensitivity of the hydrogen sensor to the change of the hydrogen concentration, after the static response time is obtained, the preset stable duration of the next verification test and the verification period of the hydrogen sensor can be set according to the static response time.

Further, in addition to testing the dynamic/static response time and the transient response time of the hydrogen sensor, the measurement error, performance influencing factors, and relative standard deviation of the hydrogen sensor may be tested.

Specifically, for measurement errors and performance influencing factors, the following manner of testing may be employed:

step 301, controlling a hydrogen sensor to detect a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions, so as to obtain the test hydrogen concentration of the test oil sample under different environmental conditions after entering a stable stage.

Wherein the fourth preset concentration is greater than or equal to 50. Mu.L/L. The environmental conditions include at least one of: oil sample temperature, oil sample pressure, oil sample flow rate, and hydrogen concentration contained in the oil sample.

Step 302, obtaining a hydrogen reference concentration of a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions.

And step 303, determining the measurement error of the hydrogen sensor under any environmental condition according to the test hydrogen concentration and the hydrogen reference concentration under any environmental condition.

Wherein the measurement error includes an absolute error and a relative error. Absolute error refers to the difference between the measured value and the actual value, while relative error refers to the ratio between the absolute error and the actual value. Specifically, the following formula can be used to calculate the measurement error:

E _a ＝C _o -C _i ，

wherein E is _a Representing absolute error, E _r Representing relative error, C _o Indicating the concentration of the tested hydrogen, C _i Indicating the hydrogen reference concentration.

In this example, the hydrogen sensor was controlled to detect a test oil sample containing hydrogen at a fourth preset concentration (greater than or equal to 50 μl/L) under different environmental conditions, and the steady-phase test hydrogen concentration was recorded. By comparing the test hydrogen concentration with the known hydrogen reference concentration under certain environmental conditions, the measurement error of the hydrogen sensor under the environmental conditions is calculated. Therefore, the accuracy of the measured value of the sensor can be known by calculating the measurement error, so that the measurement result is corrected, and the accuracy of the hydrogen sensor is improved.

Step 304, generating test curves of the hydrogen sensor under different environmental conditions according to measurement errors under different environmental conditions;

In step 305, a performance influencing factor of the hydrogen sensor is determined according to the test curve.

In this embodiment, after all possible measurement errors for the environmental conditions are obtained, the measurement errors are used to generate test curves for different environmental conditions. Therefore, how the performance of the hydrogen sensor changes along with the change of environmental factors can be depicted through the curve, and the performance influence factors which have larger influence on the hydrogen sensor can be quantitatively analyzed, so that the performance of the hydrogen sensor under different environmental conditions can be comprehensively known, expected guidance is provided for the performance of the hydrogen sensor under the use conditions, risk management and preventive measures can be better carried out, the stability and reliability of the hydrogen sensor under specific conditions can be improved, and scientific basis is provided for quality control in the production and maintenance processes.

Specific examples are (a) temperature impact on hydrogen sensor test performance;

preparing a test oil sample with the hydrogen concentration of more than 50 mu L/L, placing a hydrogen sensor on a container of the test oil sample, controlling a heating assembly to change the temperature of the container, and researching measurement errors of the hydrogen sensor at different temperatures.

(II) the pressure influences the test performance of the hydrogen sensor;

Preparing a test oil sample with the hydrogen concentration of more than 60 mu L/L, placing a hydrogen sensor on the test container, and controlling a pressure controller to change the pressure of the test oil sample in the container so as to study the measurement errors of the hydrogen sensor under the pressure of different test oil samples.

(III) influence of oil flow speed on test performance of the hydrogen sensor;

preparing a test oil sample with the hydrogen concentration of more than 50 mu L/L, changing the oil flow rate of the test oil sample by controlling the opening proportion of the valve assembly under the condition of the same temperature and the same pressure, and researching the measurement error of the hydrogen sensor under different oil flow rates.

(IV) the influence of the hydrogen concentration on the test performance of the hydrogen sensor;

oil samples of hydrogen with different concentrations in the range of 50-100 mu L/L are prepared, and measurement errors of hydrogen sensing under different hydrogen concentrations are studied under the condition of the same temperature, the same pressure and the same oil flow speed.

Specifically, for the relative standard deviation, the test can be performed in the following manner:

and step 401, controlling the hydrogen sensor to detect the target number of times of detection on the detection oil sample containing the hydrogen with the fourth preset concentration, and obtaining the hydrogen concentration of the detection oil sample with the target number of times of detection.

Wherein the fourth preset concentration is greater than or equal to 50. Mu.L/L. The target number of tests may be set reasonably according to the test accuracy, for example, 3 times, 6 times, 10 times, etc.

Step 402, determining the relative standard deviation of the hydrogen sensor according to the hydrogen concentration of the test oil sample of the target test times.

The relative standard deviation (Relative Standard Deviation, RSD) is an indicator for measuring the degree of dispersion in the data set. A lower relative standard deviation value means that the measurement result of the hydrogen sensor is more stable and accurate. Specifically, the relative standard deviation can be calculated using the following formula:

wherein RSD represents the relative standard deviation, C _j Represents the hydrogen concentration obtained by the ith detection of the hydrogen sensor, n represents the target examination times,the arithmetic average of the hydrogen concentration obtained by n times of detection is shown, and i is the test number.

In this embodiment, the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the fourth preset concentration for multiple times, so as to obtain multiple hydrogen concentration data, and the relative standard deviation of the hydrogen sensor is determined according to the concentration, so that the hydrogen concentration in the test oil sample is effectively evaluated through the relative standard deviation, the stability and reliability of the hydrogen sensor are ensured, and the design and use scene of the hydrogen sensor are facilitated to be optimized.

It should be noted that, the sequence number of each step in the above embodiment does not mean the sequence of execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

Further, as shown in fig. 5, as a specific implementation of the above-mentioned method for inspecting a hydrogen sensor, an embodiment of the present application provides an apparatus 500 for inspecting a hydrogen sensor, where the apparatus 500 for inspecting a hydrogen sensor includes: control module 501, inspection module 502 and hint module 503.

The control module 501 is configured to control the hydrogen sensor in a first reference state to detect a test oil sample containing hydrogen with a first preset concentration, where a time period of the hydrogen sensor in the first oil sample is greater than or equal to a preset stable time period, determine that the hydrogen sensor is in the first reference state, where the first oil sample is an oil sample with a hydrogen concentration of 0 μl/L and a hydrogen flow rate of a preset flow rate;

a checking module 502 for counting a first detection duration of the hydrogen sensor in a first reference state; if the concentration of the hydrogen output by the hydrogen sensor in the first reference state enters a stable stage, stopping timing the first detection duration, and determining the first detection duration as the dynamic response time of the hydrogen sensor;

the control module 501 is further configured to control the hydrogen sensor in the second reference state to detect a test oil sample containing hydrogen with a second preset concentration, where the hydrogen sensor is in a detection process in the second oil sample, and determine that the hydrogen sensor is in the second reference state, the second oil sample is an oil sample with a hydrogen concentration of a third preset concentration and a hydrogen flow rate of a preset flow rate, and the third preset concentration is less than the second preset concentration;

The checking module 502 is further configured to time a second detection duration of the hydrogen sensor in a second reference state; if the hydrogen concentration output by the hydrogen sensor in the second reference state enters the growth stage, stopping timing the second detection duration, and determining the second detection duration as the first transient response time of the hydrogen sensor;

the prompting module 503 is configured to output a first prompting message if the dynamic response time or the first transient response time exceeds a corresponding preset parameter range.

In this embodiment, after the hydrogen sensor is calibrated using a first oil sample with a hydrogen concentration of 0 μl/L and a flow volume of hydrogen produced per minute of a preset flow rate as an initial condition, the hydrogen sensor is placed into a test oil sample to be tested, and the hydrogen sensor is controlled to detect the test oil sample containing hydrogen with the first preset concentration. When the hydrogen concentration detected by the hydrogen sensor is stable, the first detection duration from the beginning of the detection of the test oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the stable phase is taken as the dynamic response time of the hydrogen sensor. Similarly, in the process that the hydrogen sensor detects the second oil sample containing the lower hydrogen concentration and the flowing volume of the generated hydrogen per minute is the preset flow rate, the hydrogen sensor is controlled to detect the test oil sample containing the hydrogen with the second preset concentration so as to test the sensitivity of the hydrogen sensor when the oil sample is suddenly changed. And after the hydrogen concentration detected by the hydrogen sensor increases, taking a second detection duration from the beginning of the detection oil sample by the hydrogen sensor to the time when the hydrogen concentration enters the increasing stage as a first transient response time in a dynamic scene of the hydrogen sensor. Therefore, the dynamic hydrogen-producing oil sample is used as a calibration condition to simulate the hydrogen concentration change condition of the hydrogen sensor in the actual working environment, so that the response time of the hydrogen sensor is more real and accurate, and the accuracy of the test result is improved. Further, when the dynamic response time or the first transient response time does not meet the required preset parameter range, outputting first prompt information. Therefore, the sensitivity of the hydrogen sensor to the change of the hydrogen concentration is checked through the dynamic response time and the first transient response time, and a user is timely prompted when the sensitivity is abnormal, so that the user can timely debug the abnormal hydrogen sensor, further, fluctuation or drift of the measurement result of the hydrogen sensor is effectively prevented, the measurement accuracy of the hydrogen sensor is ensured, and the response speed and performance of the hydrogen sensor are enhanced.

Further, the control module 501 is further configured to control the hydrogen sensor in the third reference state to detect a test oil sample containing hydrogen with a first preset concentration, and time a third detection duration of the hydrogen sensor in the third reference state, where a duration of the hydrogen sensor in the third oil sample is greater than or equal to a preset stable duration, determine that the hydrogen sensor is in the third reference state, and the first oil sample is an oil sample with a hydrogen concentration of 0 μl/L; the inspection module 502 is further configured to stop timing the third detection duration if the hydrogen concentration output by the hydrogen sensor in the third reference state enters the stable phase, and determine the third detection duration as a static response time of the hydrogen sensor; the control module 501 is further configured to control the hydrogen sensor in the fourth reference state to detect a test oil sample containing hydrogen with a second preset concentration, and time a fourth detection duration of the hydrogen sensor in the fourth reference state, where the hydrogen sensor is in a detection process of the fourth oil sample, and determine that the hydrogen sensor is in the fourth reference state, and the fourth oil sample is an oil sample with a hydrogen concentration of a third preset concentration; the checking module 502 is further configured to stop timing the fourth detection duration if the hydrogen concentration output by the hydrogen sensor in the fourth reference state enters the growth phase, and determine the fourth detection duration as the second transient response time of the hydrogen sensor; the prompting module 503 is further configured to output a second prompting message if the static response time or the second transient response time exceeds the corresponding preset parameter range.

Further, the inspection module 502 is further configured to determine a difference between the hydrogen concentration output by the hydrogen sensor at the current sampling time and the hydrogen concentration output by the hydrogen sensor at the previous sampling time; if the number of times that the absolute value of the difference value is smaller than or equal to the first threshold value is larger than the preset number of times, determining that the hydrogen concentration enters a stabilization stage; if the absolute value of the difference is greater than or equal to the second threshold, determining that the hydrogen concentration enters the growth phase.

Further, the control module 501 is further configured to control the hydrogen sensor to detect a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions, so as to obtain a test hydrogen concentration of the test oil sample under different environmental conditions after entering a stable stage, where the fourth preset concentration is greater than or equal to 50 μl/L; the inspection module 502 is further configured to obtain a hydrogen reference concentration of an inspection oil sample containing hydrogen at a fourth preset concentration under different environmental conditions; determining a measurement error of the hydrogen sensor under any environmental condition according to the test hydrogen concentration and the hydrogen reference concentration under any environmental condition, wherein the measurement error comprises an absolute error and a relative error; generating test curves of the hydrogen sensor under different environmental conditions according to measurement errors under different environmental conditions; and determining a performance influencing factor of the hydrogen sensor according to the test curve.

Further, the control module 501 is further configured to control the hydrogen sensor to detect a target number of times of detection on the test oil sample containing the hydrogen with the fourth preset concentration, so as to obtain a hydrogen concentration of the test oil sample with the target number of times of detection, where the fourth preset concentration is greater than or equal to 50 μl/L; the inspection module 502 is further configured to determine a relative standard deviation of the hydrogen sensor based on the hydrogen concentration of the inspected oil sample for the target number of inspections.

For specific limitations on the inspection apparatus of the hydrogen sensor, reference may be made to the above limitations on the inspection method of the hydrogen sensor, and no further description is given here. The various modules in the hydrogen sensor testing device described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

Based on the above-described method shown in fig. 1 to 2, correspondingly, the embodiment of the present application further provides a readable storage medium having a computer program stored thereon, which when executed by a processor, implements the above-described method for inspecting a hydrogen sensor shown in fig. 1 to 2.

Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.), and includes several instructions for causing a computer device (may be a personal computer, a server, or a network device, etc.) to perform the methods described in various implementation scenarios of the present application.

Based on the above-described method as shown in fig. 1 to 2, and the virtual device embodiment shown in fig. 5, in order to achieve the above-described object, the present embodiment further provides an inspection system including a flow cell, an oil sample storage device, and an inspection apparatus.

Specifically, the flow cell is sealed through the end cover, and the flow cell is used for storing the inspection oil sample for the hydrogen sensor to detect the hydrogen concentration of the inspection oil sample. The oil sample storage device is communicated with the flow cell through a connecting pipe and is used for conveying the inspection oil sample to the flow cell. The inspection apparatus is electrically connected to the hydrogen sensor, and the inspection apparatus implements the inspection method of the hydrogen sensor provided by the above embodiment when executing.

Alternatively, the verification device may be a computer device comprising a memory and a processor, which computer device may also comprise a user interface, a network interface, a camera, radio Frequency (RF) circuitry, sensors, audio circuitry, WI-FI modules, etc. The user interface may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (e.g., bluetooth interface, WI-FI interface), etc.

Further, the inspection system further comprises: at least one of a heating assembly, a pressure controller, a valve assembly. Wherein, heating element locates around the flow cell, and with check out test set communication connection, heating element is used for heating the flow cell. The pressure controller is arranged in the inspection container and is in communication connection with the inspection equipment, and the pressure controller is used for changing the pressure in the flow cell. The valve assembly is arranged on the connecting pipe and is in communication connection with the inspection equipment, and the valve assembly is used for controlling the flow speed of the oil sample conveyed to the flow cell by the inspection oil sample.

It will be appreciated by those skilled in the art that the present embodiment provides an inspection system configuration that is not limiting of the computer device and may include more or fewer components, or may combine certain components, or a different arrangement of components.

Through the description of the above embodiments, it can be clearly understood by those skilled in the art that the present application may be implemented by means of software plus a necessary general hardware platform, or the present application may be implemented by hardware to control a hydrogen sensor in a first reference state to detect a test oil sample containing hydrogen with a first preset concentration, and time a first detection duration of the hydrogen sensor in the first reference state, where a duration of the hydrogen sensor in the first oil sample is greater than or equal to a preset stable duration, determine that the hydrogen sensor is in the first reference state, the first oil sample is an oil sample with a hydrogen concentration of 0 μl/L, and a hydrogen flow rate is a preset flow rate; if the hydrogen concentration output by the hydrogen sensor in the first reference state enters a stable stage, stopping timing the first detection duration, and determining the first detection duration as the dynamic response time of the hydrogen sensor; controlling a hydrogen sensor in a second reference state to detect an inspection oil sample containing hydrogen with a second preset concentration, and timing a second detection duration of the hydrogen sensor in the second reference state, wherein the hydrogen sensor is in a detection process of the hydrogen sensor in the second oil sample, the hydrogen sensor is determined to be in the second reference state, the second oil sample is an oil sample with the hydrogen concentration of a third preset concentration and the hydrogen flow rate of a preset flow rate, and the third preset concentration is smaller than the second preset concentration; if the hydrogen concentration output by the hydrogen sensor in the second reference state enters the growth stage, stopping timing the second detection duration, and determining the second detection duration as the first transient response time of the hydrogen sensor; and if the dynamic response time or the first transient response time exceeds the corresponding preset parameter range, outputting first prompt information. According to the embodiment of the application, the automatic test of the response time of the hydrogen sensor is realized, the oil sample of dynamic hydrogen production is used as a calibration condition to simulate the hydrogen concentration change condition of the hydrogen sensor in an actual working environment, so that the response time of the hydrogen sensor is more real and accurate, and the accuracy of a test result is improved.

Those skilled in the art will appreciate that the drawings are merely schematic illustrations of one preferred implementation scenario, and that the modules or flows in the drawings are not necessarily required to practice the present application. Those skilled in the art will appreciate that modules in an apparatus in an implementation scenario may be distributed in an apparatus in an implementation scenario according to an implementation scenario description, or that corresponding changes may be located in one or more apparatuses different from the implementation scenario. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The foregoing application serial numbers are merely for description, and do not represent advantages or disadvantages of the implementation scenario. The foregoing disclosure is merely a few specific implementations of the present application, but the present application is not limited thereto and any variations that can be considered by a person skilled in the art shall fall within the protection scope of the present application.

Claims

1. A method of testing a hydrogen sensor, the method comprising:

controlling the hydrogen sensor in a first reference state to detect an inspection oil sample containing hydrogen with a first preset concentration, and timing a first detection duration of the hydrogen sensor in the first reference state, wherein the duration of the hydrogen sensor in the first oil sample is greater than or equal to a preset stable duration, the hydrogen sensor is determined to be in the first reference state, the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L, and the hydrogen flow rate is a preset flow rate;

controlling the hydrogen sensor in a second reference state to detect an inspection oil sample containing hydrogen with a second preset concentration, and timing a second detection duration of the hydrogen sensor in the second reference state, wherein the hydrogen sensor is in a detection process of the hydrogen sensor in the second oil sample, the hydrogen sensor is determined to be in the second reference state, the second oil sample is an oil sample with the hydrogen concentration of a third preset concentration and the hydrogen flow rate of a preset flow rate, and the third preset concentration is smaller than the second preset concentration;

stopping timing the second detection duration if the hydrogen concentration output by the hydrogen sensor in the second reference state enters the growth stage, and determining the second detection duration as the first transient response time of the hydrogen sensor;

2. The method for inspecting a hydrogen sensor according to claim 1, further comprising:

controlling the hydrogen sensor in a third reference state to detect a detection oil sample containing the hydrogen with the first preset concentration, and timing a third detection duration of the hydrogen sensor in the third reference state, wherein the duration of the hydrogen sensor in the third oil sample is longer than or equal to the preset stable duration, and determining that the hydrogen sensor is in the third reference state, and the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L;

controlling the hydrogen sensor in a fourth reference state to detect a detection oil sample containing the hydrogen with the second preset concentration, and timing a fourth detection duration of the hydrogen sensor in the fourth reference state, wherein the hydrogen sensor is in a detection process of the hydrogen sensor in the fourth reference state, and the hydrogen sensor is determined to be in the fourth reference state, and the fourth oil sample is an oil sample with the hydrogen concentration of the third preset concentration;

Stopping timing the fourth detection duration if the hydrogen concentration output by the hydrogen sensor in the fourth reference state enters the growth stage, and determining the fourth detection duration as the second transient response time of the hydrogen sensor;

and outputting a second prompt message if the static response time or the second transient response time exceeds the corresponding preset parameter range.

3. The method for inspecting a hydrogen sensor according to claim 1 or 2, characterized in that the method further comprises:

if the number of times that the absolute value of the difference value is smaller than or equal to the first threshold value is larger than the preset number of times, determining that the hydrogen concentration enters a stable stage;

and if the absolute value of the difference value is greater than or equal to a second threshold value, determining that the hydrogen concentration enters a growth stage.

4. The method for inspecting a hydrogen sensor according to claim 1 or 2, characterized in that the method further comprises:

controlling the hydrogen sensor to detect a test oil sample containing hydrogen with a fourth preset concentration under different environmental conditions to obtain the test hydrogen concentration of the test oil sample under different environmental conditions after entering a stable stage, wherein the fourth preset concentration is greater than or equal to 50 mu L/L;

Acquiring the hydrogen reference concentration of the test oil sample containing the hydrogen with the fourth preset concentration under different environmental conditions;

determining a measurement error of the hydrogen sensor under any environmental condition according to the test hydrogen concentration and the hydrogen reference concentration under the any environmental condition, wherein the measurement error comprises an absolute error and a relative error;

generating a test curve of the hydrogen sensor under different environmental conditions according to the measurement errors under different environmental conditions;

and determining a performance influence factor of the hydrogen sensor according to the test curve.

5. The method for inspecting a hydrogen sensor according to claim 4,

the environmental conditions include at least one of: oil sample temperature, oil sample pressure, oil sample flow rate, and hydrogen concentration contained in the oil sample.

6. The method for inspecting a hydrogen sensor according to claim 1 or 2, characterized in that the method further comprises:

controlling the hydrogen sensor to detect target detection times of a detection oil sample containing hydrogen with fourth preset concentration to obtain the hydrogen concentration of the detection oil sample with the target detection times, wherein the fourth preset concentration is greater than or equal to 50 mu L/L;

7. A hydrogen sensor testing device, the device comprising:

the control module is used for controlling the hydrogen sensor in a first reference state to detect a detection oil sample containing hydrogen with a first preset concentration, wherein the time length of the hydrogen sensor in the first oil sample is longer than or equal to a preset stable time length, the hydrogen sensor is determined to be in the first reference state, the first oil sample is an oil sample with the hydrogen concentration of 0 mu L/L and the hydrogen flow rate of the hydrogen at a preset flow rate;

the detection module is used for timing a first detection duration of the hydrogen sensor in a first reference state; the method comprises the steps of,

the control module is further configured to control the hydrogen sensor in a second reference state to detect a test oil sample containing hydrogen with a second preset concentration, where the hydrogen sensor is in a detection process in the second oil sample, and determine that the hydrogen sensor is in the second reference state, where the second oil sample is an oil sample with a hydrogen concentration of a third preset concentration and a hydrogen flow rate of a preset flow rate, and the third preset concentration is smaller than the second preset concentration;

The detection module is also used for timing a second detection duration of the hydrogen sensor in a second reference state; the method comprises the steps of,

and the prompt module is used for outputting first prompt information if the dynamic response time or the first transient response time exceeds the corresponding preset parameter range.

8. A readable storage medium having stored thereon a program or instructions, which when executed by a processor, realizes the steps of the method of inspecting a hydrogen sensor according to any one of claims 1 to 6.

9. An inspection system, comprising:

the flow cell is sealed through an end cover and is used for storing a test oil sample so as to enable a hydrogen sensor to detect the hydrogen concentration of the test oil sample;

an oil sample storage device in communication with the flow cell through a connecting tube, the oil sample storage device being for delivering the test oil sample to the flow cell;

A testing device electrically connected to the hydrogen sensor, which when executed performs the steps of the method of testing a hydrogen sensor as claimed in any one of claims 1 to 6.

10. The inspection system of claim 9, further comprising:

a pressure controller, which is arranged in the inspection container and is in communication connection with the inspection equipment, and is used for changing the pressure in the flow cell;

and the valve assembly is arranged on the connecting pipe and is in communication connection with the inspection equipment, and is used for controlling the flow speed of the oil sample conveyed to the flow cell by the inspection oil sample.