CN-121977963-A - Concrete compression test behavior monitoring method, storage and monitoring system

CN121977963ACN 121977963 ACN121977963 ACN 121977963ACN-121977963-A

Abstract

The application provides a concrete compression test behavior monitoring method, a storage and a monitoring system, wherein the concrete compression test behavior monitoring method comprises the steps of collecting multi-source original signals in real time to judge whether pressure relief behavior occurs or not based on the multi-source original signals, extracting key characteristics when the pressure relief behavior occurs, wherein the key characteristics at least comprise key time points and corner cutting characteristics, obtaining a primary monitoring result based on the key time points, and obtaining a secondary monitoring result based on the corner cutting characteristics, so that a compliance monitoring result of the concrete compression test behavior is obtained by combining the primary monitoring result and the secondary monitoring result. The application realizes accurate, automatic and real-time identification from 'action intention' to 'data representation' of the artificial illegal pressure relief behavior in the concrete compression test, and fundamentally solves the technical problem that the prior art cannot cope with hidden and simulated data fake behavior.

Inventors

YUAN CHANG
LIU YUHANG
HUANG LING
HUANG ZHONGHUAN
CHEN GONGPING
SONG YAN
ZHANG CHUANFENG
Wu Kunni
WANG YONGCHUN
WU DI
LIU YONGMING

Assignees

广东柏正工程检测有限公司

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. The concrete compression test behavior monitoring method is characterized by comprising the following steps of: collecting a multi-source original signal in real time to judge whether pressure relief behavior occurs or not based on the multi-source original signal; when pressure relief behavior occurs, extracting key features, wherein the key features at least comprise key time points and corner cutting features; and obtaining a primary monitoring result based on the key time point and a secondary monitoring result based on the corner cutting feature, so as to obtain a compliance monitoring result of the concrete compression test behavior by combining the primary monitoring result and the secondary monitoring result.
2. The method for monitoring the behavior of a concrete compression test according to claim 1, wherein the multi-source original signal at least comprises an absolute rotation angle signal of a valve handle of a pressure relief valve and an oil pressure instantaneous drop signal during pressure relief, and the step of judging whether the pressure relief behavior occurs based on the multi-source original signal comprises the steps of: And when the absolute rotation angle signal is larger than a set threshold value and the oil pressure instantaneous drop signal is detected, judging that the pressure relief behavior occurs.
3. The method for monitoring the behavior of a concrete compression test according to claim 1, wherein the multi-source original signal further comprises a stress time data stream, the key time points comprise a stress peak time and a load duration end time, and the extracting key features comprises: Acquiring a stress time data stream, calculating and acquiring a load change rate based on the stress time data stream, and determining a stress peak time and a load continuous ending time based on the load change rate; And calculating and obtaining the corner cutting characteristic based on the load change rate.
4. A method of monitoring the behavior of a concrete compression test according to claim 3, wherein the obtaining of a primary monitoring result based on a key time point comprises: when the starting moment of the operation of the pressure relief valve is smaller than the moment of the stress peak value and the ending moment of the operation of the pressure relief valve is larger than or equal to the continuous ending moment of the load, obtaining a monitoring result as depth violation operation; when the starting moment of the operation of the pressure relief valve is equal to the moment of the stress peak value and the ending moment of the operation of the pressure relief valve is greater than or equal to the continuous ending moment of the load, obtaining a monitoring result as typical illegal operation; When the starting moment of the operation of the pressure relief valve is larger than the moment of the stress peak value and the ending moment of the operation of the pressure relief valve is larger than or equal to the continuous ending moment of the load, a monitoring result is obtained to be recommended rechecking; And when the starting moment of the operation of the pressure relief valve is larger than the continuous ending moment of the load, obtaining a monitoring result as a compliance operation.
5. The concrete compression test behavior monitoring method according to claim 4, wherein the obtaining of the secondary monitoring result based on the chamfer characteristics comprises: Obtaining a pressure relief motor curve characteristic based on the corner cut characteristic, wherein the pressure relief motor curve characteristic comprises a first loading section curve characteristic, a second loading section curve characteristic, a first unloading section curve characteristic and a second unloading section curve characteristic; when the first loading section curve characteristic and the second unloading section curve characteristic are currently obtained, a secondary monitoring result is obtained as a compliance operation; when the first loading section curve characteristic and the first unloading section curve characteristic are currently obtained, a secondary monitoring result is obtained and is typical illegal operation; And when the second loading section curve characteristic and the second unloading section curve characteristic are currently obtained, obtaining a secondary monitoring result as a depth violation operation.
6. The method for monitoring the behavior of a concrete compression test according to claim 1, further comprising: and if the primary monitoring result is not the recommended rechecking, taking the primary monitoring result as a compliance monitoring result of the concrete compression test behavior, and otherwise, taking the secondary monitoring result as the compliance monitoring result.
7. The method for monitoring the behavior of a concrete compression test according to claim 2, further comprising: calculating to obtain the maximum instantaneous change rate of the oil pressure based on the oil pressure instantaneous drop signal; Obtaining three monitoring results based on the total rotation angle and the instantaneous angular velocity of the valve handle of the pressure relief valve and the maximum instantaneous change rate of the oil pressure; Wherein the total rotational angle and the instantaneous angular velocity are obtained at a moment of initiation of triggering a pressure relief valve operation.
8. The method for monitoring the behavior of a concrete compression test according to claim 7, further comprising: If the primary monitoring result is the same as the secondary monitoring result, the result is used as a compliance monitoring result, otherwise, the tertiary monitoring result is used as a compliance monitoring result; or if the primary monitoring result, the secondary monitoring result and the tertiary monitoring result are the same, the result is used as a compliance monitoring result, otherwise, the review is recommended.
9. A memory for storing a computer program or instructions, wherein the computer program or instructions, when executed, performs the concrete crush test behavior monitoring method of any one of claims 1-8.
10. A monitoring system comprising a processor and a memory storing a computer program or instructions, wherein the processor is configured to execute the computer program or instructions to implement the concrete compression test behavior monitoring method of any one of claims 1-8.

Description

Concrete compression test behavior monitoring method, storage and monitoring system Technical Field The application relates to the technical field of construction engineering quality monitoring, in particular to a concrete compression test behavior monitoring method, a storage and a monitoring system. Background The compressive strength of concrete is a very important mechanical property indicator during the completion and acceptance of construction projects. At present, the industry has the intentional illegal action of strong concealment and difficult evidence obtaining, wherein part units are that the concrete compression resistance detection data successfully pass through acceptance, and a batch of test blocks are customized, and the test blocks are often 2-6 labels higher than the design strength. The detection personnel is to make the detection curve and the detection value of the compressive strength of the test block more reasonable, and the pressure relief valve of the press is manually operated to relieve the pressure in advance before the test block is naturally damaged, so that the detection data are falsified, and the design strength is manually 'matched'. The prior art cannot effectively identify such offending intervention behaviors: The video monitoring is ineffective, namely, only an action picture can be recorded, an accurate millisecond-level causal time sequence relationship between the action of operating the pressure relief valve and the result of testing machine load drop cannot be established, and compliance and illegal operation cannot be distinguished. The software of the testing machine has the functional limitation that only load-time curves can be stored and displayed, the traceability of the curve forming process is lacked, and especially abnormal curves which are caused by human intervention and can be morphologically and deliberately imitate natural damage cannot be identified. The supervision mode is lag, mainly depends on post spot check and manual experience judgment, has low efficiency, and cannot be identified by a fine intervention means of 'slow simulation pressure relief'. Therefore, a technical scheme capable of automatically and accurately identifying artificial illegal interventions in the test process from the concrete pressurization and pressure relief test process is needed, so that data counterfeiting is fundamentally stopped, and the authenticity and creditability of the detected data are ensured. Disclosure of Invention The application provides a concrete compression test behavior monitoring method, a storage and a monitoring system for solving the technical problems. The application provides a concrete compression test behavior monitoring method, which comprises the following steps of collecting multi-source original signals in real time to judge whether pressure relief behavior occurs or not based on the multi-source original signals, extracting key characteristics when the pressure relief behavior occurs, wherein the key characteristics at least comprise key time points and corner cutting characteristics, obtaining a primary monitoring result based on the key time points and obtaining a secondary monitoring result based on the corner cutting characteristics, and obtaining a compliance monitoring result of the concrete compression test behavior by combining the primary monitoring result and the secondary monitoring result. According to the technical scheme, through a dual verification mechanism of combination of multi-source signal real-time sensing, millisecond causal time sequence analysis and curve form depth feature (chamfer angle) mining, accurate, automatic and real-time identification from 'action intention' to 'data representation' of an artificial illegal pressure relief behavior in a concrete compression test is realized, and the technical problem that hidden and simulated data fake behavior cannot be handled in the prior art is fundamentally solved. Further, the multi-source original signal at least comprises an absolute rotation angle signal of a valve handle of the relief valve and an oil pressure instantaneous drop signal during relief, and the judgment of whether the relief behavior occurs or not based on the multi-source original signal comprises judging that the relief behavior occurs when the absolute rotation angle signal is larger than a set threshold value and the oil pressure instantaneous drop signal is detected. In the technical scheme, whether the valve is finely adjusted or the actual pressure relief operation cannot be distinguished only by the angle signal, whether the drop is natural damage or artificial pressure relief cannot be judged only by the oil pressure signal, the two are logically combined with one another, the pressure relief behavior is judged to be one time only when the operation action (the rotary valve) and the actual physical effect (the oil pressure drop) occur simultaneously, the accuracy and the reliability o