CN-121994473-A - Portable breather valve online detection system and method

CN121994473ACN 121994473 ACN121994473 ACN 121994473ACN-121994473-A

Abstract

The invention discloses a portable breather valve on-line detection system and a method, the system comprises a signal acquisition module, a valve response monitoring module, a characteristic point identification module, a performance parameter evaluation module and a detection state output module. The method is characterized in that the signal quality is improved through continuous segment stability detection, a synchronous mutation area is identified in dynamic data, a mutation feature sampling point group is extracted, accurate identification of a sudden state is realized by combining a flow ratio threshold value judging mechanism, a speed change extreme point is compared with a fluctuation difference, a trigger node is calibrated, feature pairing values are extracted, a plurality of groups of flow pressure pairing sequences are formed in a test round and are compared with a standard interval to generate a compliance result, whether the respiratory state meets the standard or not is automatically judged, and the detection cycle label information and response state record with traceability are formed through unified archiving and identification processing of each detection cycle state, so that the identification efficiency of respiratory valve opening and closing abnormality, the response speed of state feedback and the record integrity of the detection result are improved.

Inventors

Gao Shanglei
Tu Yingxin
HU YONG
LI XUEKE
ZHOU YONGHUI
GUO ZHIQIANG
YANG JUNJIE
KANG KAI
ZHAO JIANKAI
ZHANG QING
ZHANG HAIPENG
LIU YU

Assignees

中海石油技术检测有限公司

Dates

Publication Date: 20260508
Application Date: 20260311

Claims (10)

1. The portable breather valve on-line detection system is characterized by comprising, The signal acquisition module is used for acquiring pressure sensor end data and flowmeter signal end data of the breather valve in a connection state, detecting time sequence stability of each group of signals and constructing a time synchronization channel matrix comprising pressure and flow rate; The valve response monitoring module is used for identifying a synchronous mutation interval between pressure and flow velocity in a continuous growth section based on the time synchronous channel matrix, sequentially comparing the variation trend difference values of the front and rear data sets, extracting a sampling point set with the variation rate exceeding a critical flow ratio threshold value, recording a time stamp and a variation type identifier, and generating a flow pressure mutation parameter set; the characteristic point identification module is used for calculating the speed fluctuation difference before and after the mutation zone by screening time nodes with extreme points in the change of the flow rate and the pressure speed according to the flow pressure mutation parameter set, calibrating the exhalation trigger point and the inhalation trigger point, extracting the flow rate and the pressure pairing value at the corresponding position, and generating an opening and closing behavior characteristic pair set; And the performance parameter evaluation module is used for respectively extracting flow pressure pairing value sequences under different test rounds according to the opening and closing behavior characteristic pairing set, comparing the flow pressure pairing value sequences with a respiratory valve pressure standard interval item by item, judging whether the corresponding values of the exhalation pressure and the inhalation pressure are all in an allowable range, and generating an opening and closing response coincidence state list.
2. The portable online detection system for the respiratory valve, which is disclosed in claim 1, is characterized in that the time synchronization channel matrix comprises a pressure signal channel, a flow rate signal channel and a time stamp calibration column, the flow pressure mutation parameter set comprises a mutation sampling point set, a change type identifier and a synchronization time stamp, the opening and closing behavior characteristic pair set comprises an exhalation trigger point pairing value, an inhalation trigger point pairing value, numbering information and a synchronization identifier, and the opening and closing response coincidence state list comprises an exhalation pressure compliance state, an inhalation pressure compliance state and a detection period number.
3. The portable breather valve online detection system of claim 1 or 2, wherein the signal acquisition module comprises: the signal acquisition sub-module is used for acquiring the pressure sensor signal data and the flowmeter signal data, detecting the time sequence stability of each group of pressure signals and flow signals, screening data segments with fluctuation amplitude smaller than a flow speed change critical threshold and a pressure fluctuation critical threshold in a continuous time period, and generating effective continuous signal segment interval data; The time merging sub-module is used for comparing the time stamp data of the pressure signal and the flow signal in the same time period based on the effective continuous signal section data, screening signal pairs with time stamp difference values smaller than a time alignment maximum error threshold value, reading signal reading values and time intervals corresponding to each time stamp in the screened signal pairs, carrying out aggregate arrangement on the signal reading values according to the time stamp sequence, and calculating an average value to generate a merging synchronous signal reading value sequence; and the channel construction sub-module is used for performing traversal screening according to the time conditions that the signal sampling interval is smaller than the maximum threshold value of the sampling interval according to the time stamp, the pressure signal value and the flow velocity signal value in the merging synchronous signal reading value sequence, and sequentially filling the ternary data combination meeting the conditions into the corresponding position of the two-dimensional matrix to obtain the pressure flow velocity time synchronous channel matrix.
4. The portable respiratory valve online detection system of claim 1 or 2, wherein the valve response monitoring module comprises: The trend identification sub-module is used for acquiring the pressure sequence and the flow velocity sequence in the time synchronization channel matrix, extracting the pressure difference value and the flow velocity difference value of any two adjacent sampling points according to time sequence, judging whether the directions of the adjacent sampling points are consistent or not according to the adjacent difference values, recording continuous growth sections, and generating pressure flow velocity growth section paragraph data; The flow ratio screening submodule extracts all flow speed values in the continuous growth section based on the pressure flow speed growth section paragraph data, calculates an average value, calculates a ratio by combining a rated flow value, judges whether a mutation critical flow ratio threshold condition is met, if the condition is met, identifies the mutation section, extracts a start-stop timestamp and a ratio result in the corresponding section, and generates a flow speed mutation identification index; And the abrupt change determination submodule invokes an end sampling point which is identified as an abrupt change section in the flow speed abrupt change identification index, extracts a pressure difference and a flow speed difference value of a section before the end sampling point and a section after the end sampling point, judges whether the directional product is negative, judges that the flow speed is abnormal abrupt change if the directional product is negative, and integrates the judgment type, the time stamp and the change value if the flow speed is abnormal and establishes a flow pressure abrupt change parameter set if the flow speed is not normal.
5. The portable breather valve online detection system of claim 1 or 2, wherein the feature point identification module comprises: the extremum positioning sub-module is used for extracting a flow velocity sequence and a pressure sequence of continuous sampling points in a mutation interval based on the flow pressure mutation parameter set, detecting sampling points with the maximum and minimum change rates in each group of sequences, recording corresponding time stamps as maximum value points and minimum value points, judging whether the sequence between the two points accords with the definition conditions of inhalation and exhalation characteristics, screening the sampling points of the mutation section meeting the inhalation and exhalation switching characteristics, and generating a rate extremum time point sequence; The fluctuation calculation operator module extracts all flow velocity values and pressure value sequences in the time zone between two adjacent extreme points in the velocity extreme point time point sequence, calculates the difference value between the maximum value and the minimum value of the flow velocity sequence and the difference value between the maximum value and the minimum value of the pressure sequence, respectively represents the two types of difference values as flow velocity fluctuation amount and pressure wave momentum, arranges fluctuation value pairs according to time sequence, and acquires a velocity pressure fluctuation amount pair set; and the behavior calibration sub-module is used for extracting the flow velocity and the pressure value of the corresponding position by combining the original channel data according to the time stamp corresponding to each pair of fluctuation amounts in the rapid pressure fluctuation amount pair set, respectively setting the serial number and the synchronous identification serial number of each pair of flow pressure pairing values, constructing a unified structure data item, and establishing an opening and closing behavior characteristic pair set.
6. The portable breather valve online detection system of claim 1 or 2, wherein the performance parameter assessment module comprises: The round extraction sub-module is used for acquiring all the centralized sampling records of the start-stop behavior feature pairs, dividing each group of feature pairs according to the number of test batches, extracting all flow velocity and pressure pairing values in each round, arranging each group of data according to time sequence, and summarizing and numbering all records in each round to generate a test round pairing value sequence; The pressure ratio sub-module is used for identifying a corresponding pressure value in an exhalation state and comparing the pressure value with the upper limit and the lower limit of an exhalation pressure interval based on each pair of flow pressure values in the test round pairing value sequence, identifying the corresponding pressure value in the inhalation state and comparing the pressure value with the upper limit and the lower limit of the inhalation pressure interval, recording all sampling point numbers which do not meet interval conditions, and acquiring a pressure interval deviation number set; And the compliance judging sub-module marks the test rounds with the external pressure values of the intervals as non-compliance and the rest as compliance according to the corresponding relation between the abnormal sampling point numbers identified by the pressure interval deviation number sets and the test numbers of the test round pairing value sequences, and summarizes each round of test numbers and the corresponding compliance state identification into a two-dimensional state array to establish an opening and closing response compliance state list.
7. The system of claim 1 or 2, further comprising a detection state output module for judging whether the breathing valve exhale pressure test is compliant according to the on-off response conforming state list, if the state is not compliant, controlling the pressure release valve to execute an emergency pressure release instruction, judging whether the inhaling pressure test is compliant, if the state is not compliant, executing a secondary pressure release action, summarizing the status label information of the current detection period, and generating the portable breathing valve on-line detection record.
8. The online detection system for a portable breather valve of claim 7, wherein the online detection record for the portable breather valve comprises a detection period status tag, a safety response status record, and a pressure release execution flag.
9. The portable breather valve online detection system of claim 7, wherein the detection status output module comprises: The pressure judging submodule is used for respectively screening all the calling pressure state labels and the inhaling pressure state labels based on the opening and closing response coincidence state list, sequentially judging whether the calling pressure state in each round is in compliance or not, judging whether the inhaling pressure state is in compliance or not, summarizing the two next pressure relief requirement identifiers in each round, adding corresponding numbers, and generating a round pressure relief judging value group; the instruction execution sub-module sequentially sets instruction triggering operation for each round number according to the pressure release requirement identification of each round in the round pressure release judgment value group, if the pressure release identification of the exhalation pressure does not accord with the rule, the emergency pressure release instruction is triggered, if the pressure release identification of the inhalation pressure does not accord with the rule, the secondary pressure release instruction execution flow is added, and an instruction response structure is established after all triggering records are coded, so that an action response triggering code set is obtained; And the record generation sub-module is used for finishing and outputting a structured result unit according to the triggering result of each turn in the action response triggering code set and combining the original detection number, the turn number and the label information of the calling and inhaling states, uniformly generating standard format labels and establishing the portable breather valve on-line detection record.
10. The portable breather valve on-line detection method is characterized in that: an on-line detection system using a portable breather valve according to any one of claims 1 to 9, comprising the steps of, S1, acquiring signals, namely acquiring data of a pressure sensor end and data of a flowmeter signal end of a breather valve in a connection state, detecting time sequence stability of each group of signals, and constructing a time synchronization channel matrix of pressure and flow rate; S2, monitoring a valve, identifying a synchronous mutation interval between pressure and flow velocity in a continuous growth section based on the time synchronous channel matrix, sequentially comparing the variation trend difference values of the front and rear data sets, extracting a sampling point set with the variation rate exceeding a critical flow ratio threshold value, recording a time stamp and a variation type identifier, and generating a flow pressure mutation parameter set; S3, identifying characteristic points, according to the sudden change parameter set of the flow pressure, calculating the front and back speed fluctuation difference of the sudden change interval by screening time nodes with extreme points in the change of the flow rate and the pressure speed, calibrating an exhalation trigger point and an inhalation trigger point, extracting flow rate and pressure pairing values at corresponding positions, and generating an opening and closing behavior characteristic pair set; And S4, evaluating the parameter performance, respectively extracting flow pressure pairing value sequences under different test rounds according to the opening and closing behavior characteristic pairing set, performing item-by-item comparison with a respiratory valve pressure standard interval, judging whether the corresponding values of the exhalation pressure and the inhalation pressure are all in an allowable range, and generating an opening and closing response coincidence state list.

Description

Portable breather valve online detection system and method Technical Field The invention belongs to the technical field of real-time detection, and particularly relates to a portable breather valve online detection system and method. Background The technical field of real-time detection mainly relates to related technologies for continuously collecting and analyzing various physical, physiological or environmental parameters in the running or using process, and the related technologies comprise core matters such as sensor technology, signal collecting means, a data conversion device, a state recognition mechanism and the like, and are widely applied to a plurality of application directions such as medical monitoring, industrial control, safety protection and the like. The portable online detection system for the breather valve is special detection equipment for monitoring the working state of the breather valve in the breather device in the use process, aims at real-time identification of faults such as unsmooth opening and closing, air leakage or blockage and the like possibly occurring in the wearing process of the breather valve, generally adopts an air pressure sensing element to continuously measure the pressure difference between the upstream and the downstream of the breather valve, judges the working state of the valve in combination with trigger logic based on threshold judgment, and prompts a user of the current device state through simple visual or sound signals. In the detection process of the conventional portable breather valve, upstream and downstream differential pressure measurement and threshold logic judgment are mainly relied on, an alignment mechanism for signal stability detection and time dimension is lacked, misjudgment is easy to occur in a scene facing strong data fluctuation or rapid respiratory frequency change, and speed abrupt change points in opening and closing behaviors cannot be accurately captured, so that the problem of deviation or omission of trigger point judgment is caused. The system archiving capability of test data is lacking, unified management and tracing of multi-period detection results are not facilitated, and when continuous performance monitoring or fault behavior trace back is required, a stable, comparable and continuous analysis basis is difficult to provide, so that the response precision and the recording reliability of an online detection system are affected. Disclosure of Invention The invention aims to solve the problem of providing a portable breather valve on-line detection system and a portable breather valve on-line detection method, wherein the system introduces a time synchronization channel construction mechanism of pressure and flow rate, ensures that different physical quantities have uniform time references, automatically judges whether a breathing state meets standards or not, and improves the recognition efficiency of breathing valve opening and closing abnormality, the response speed of state feedback and the record integrity of detection results. In order to solve the technical problems, the invention adopts the technical proposal that the portable breather valve on-line detection system comprises, The signal acquisition module is used for acquiring pressure sensor end data and flowmeter signal end data of the breather valve in a connection state, detecting time sequence stability of each group of signals and constructing a time synchronization channel matrix comprising pressure and flow rate; The valve response monitoring module is used for identifying a synchronous mutation interval between pressure and flow velocity in a continuous growth section based on the time synchronous channel matrix, sequentially comparing the variation trend difference values of the front and rear data sets, extracting a sampling point set with the variation rate exceeding a critical flow ratio threshold value, recording a time stamp and a variation type identifier, and generating a flow pressure mutation parameter set; the characteristic point identification module is used for calculating the speed fluctuation difference before and after the mutation zone by screening time nodes with extreme points in the change of the flow rate and the pressure speed according to the flow pressure mutation parameter set, calibrating the exhalation trigger point and the inhalation trigger point, extracting the flow rate and the pressure pairing value at the corresponding position, and generating an opening and closing behavior characteristic pair set; And the performance parameter evaluation module is used for respectively extracting flow pressure pairing value sequences under different test rounds according to the opening and closing behavior characteristic pairing set, comparing the flow pressure pairing value sequences with a respiratory valve pressure standard interval item by item, judging whether the corresponding values of the exhalation pressure and the inhalation p