CN-122017265-A - Full-automatic soil shrinkage tester and control method thereof

CN122017265ACN 122017265 ACN122017265 ACN 122017265ACN-122017265-A

Abstract

The invention provides a full-automatic soil shrinkage tester and a control method thereof, which belong to the technical field of control, and specifically comprise the steps of utilizing test process data of meeting requirements of a volume fluctuation curve in a screening rotation speed interval, determining test control sequences of the screening rotation speed interval by combining the association degree of the test process of meeting the requirements of the volume fluctuation curve and the volume fluctuation curve of other test rotation speed intervals, performing test control processing of different screening rotation speed intervals according to the test control sequences, and determining the test control method of the full-automatic soil shrinkage tester in the screening rotation speed interval which is not tested based on the consistency degree of the volume fluctuation curve in the screening rotation speed interval and the screening rotation speed interval data of the existing test completion, so that the reliability degree of deformation monitoring processing is improved.

Inventors

WANG YANG
DONG GUANYING
MAO YUE
MENG CAO
JIN CHUANQI
TAO KAI
XU GAOYOU
HU QINGLEI
Wu Shuaimeng
GAO JIANYANG
LI TIANLI
LU DA
JIANG LI
DENG RUILIN

Assignees

中核勘察设计研究有限公司

Dates

Publication Date: 20260512
Application Date: 20260325

Claims (10)

1. The control method of the full-automatic soil shrinkage tester is characterized by comprising the following steps of: Determining a volume change curve of soil along with the change of the water content by using a soil shrinkage tester, determining an abnormal change period in a history measurement process by using the volume change curve, and determining an adjustment strategy of the test rotation speed based on the abnormal change period data and the superposition degree of the abnormal change period; performing adjustment processing of the test rotation speed by using the adjustment strategy, determining a screening rotation speed section in the test rotation speed section according to the association degree of the volume change curve and other test rotation speed sections, and determining a test control sequence of the screening rotation speed section by using test process data of which the volume change curve in the screening rotation speed section meets the requirement and combining the association degree of the test process of which the volume change curve meets the requirement and the volume change curve of other test rotation speed sections; And performing test control processing of different screening rotation speed intervals according to the test control sequence, and determining a test control method of the full-automatic soil shrinkage tester in the screening rotation speed interval which is not tested based on the consistency degree of the volume change curve in the screening rotation speed interval and screening rotation speed interval data of the existing test completion.
2. The method for controlling a fully automatic soil shrinkage tester according to claim 1, wherein the volume change curve of the soil with the change of the water content is determined according to the scanning result of the laser or the structured light scanner.
3. The method according to claim 1, wherein the abnormal variation period in the history measurement is determined according to the degree of coincidence of the measurement process with the volume variation curve in the history measurement process in the same test area within the latest preset period.
4. The method for controlling a fully automatic soil shrinkage tester according to claim 1, wherein the method for determining the adjustment strategy of the test rotation speed is as follows: determining a measurement process in which an abnormal variation period exists based on the abnormal variation period data, and taking the measurement process as an abnormal measurement process; Determining the similarity coefficient of the abnormal change time periods between different abnormal measurement processes according to the coincidence degree of the abnormal change time periods of the different abnormal measurement processes; And determining an adjustment strategy of the test rotation speed by using the abnormal measurement process data and the similarity coefficient of the abnormal variation period between different abnormal measurement processes.
5. The control method of a full-automatic soil shrinkage tester according to claim 4, wherein the similarity coefficient of the abnormal variation period between the abnormal measurement processes is determined according to the product of the number of coincidence of the abnormal variation period between the abnormal measurement processes and a preset scale factor.
6. The method for controlling a fully automatic soil shrinkage tester according to claim 4, wherein the determining the adjustment strategy of the test rotation speed by using the abnormal measurement process data and the similarity coefficient of the abnormal variation period between different abnormal measurement processes comprises: and acquiring the number of the abnormal measurement processes, and determining an adjustment strategy of the test rotation speed as the adjustment strategy of the test rotation speed according to a preset step length when the number of the abnormal measurement processes is judged to be larger than a preset measurement process number threshold value.
7. The control method of a fully automatic soil shrinkage tester according to claim 1, wherein the method for determining the test process that the volume change curve satisfies the requirement is: Dividing the test processes, in which the similarity coefficients of the volume change curves in all the unit time periods meet the requirements, into the same test process group according to the similarity coefficients of the volume change curves in the unit time periods in the screening rotation speed interval between different test processes; The test procedure in the test procedure group with the largest test procedure number is used as the test procedure with the volume change curve meeting the requirement.
8. The control method of a fully automatic soil shrinkage tester according to claim 1, wherein the method of determining the test control method of the fully automatic soil shrinkage tester in the screening rotation speed interval which has not been tested is as follows: Determining the test process which falls into the test process group with the largest number of test processes based on the consistency degree of the volume change curve in the screening rotation speed interval, determining the update data of the matching test process by utilizing the test process which falls into the test process group with the largest number of test processes, determining the duty ratio of the matching test process in the screening rotation speed interval by utilizing the update data of the matching test process, and taking the duty ratio as the matching test duty ratio; Determining a matching test process of other screening rotation speed intervals with the consistency degree meeting the requirement in the screening rotation speed interval by utilizing the consistency degree of the volume change curves of the screening rotation speed interval and other screening rotation speed intervals completed by the existing test, and taking the matching test process as a credible test process; And determining a test control method of the full-automatic soil shrinkage tester in a screening rotation speed interval which is not tested according to the matching test duty ratio and the credible test process data of different screening rotation speed intervals which are finished by the existing test and by combining the screening rotation speed interval data which are finished by the existing test.
9. The control method of the full-automatic soil shrinkage tester according to claim 8, wherein the screening rotation speed interval in which the existing test is completed is taken as a completion interval, and if the proportion of the completion interval in the screening rotation speed interval is smaller than a preset completion proportion threshold value, the test control method of the full-automatic soil shrinkage tester in the screening rotation speed interval which is not yet tested is determined to be free from test control, and the test is not stopped until the number of test processes reaches a target test process number threshold value.
10. A full-automatic soil shrinkage tester, adopting the control method of the full-automatic soil shrinkage tester as claimed in any one of claims 1 to 9, characterized by comprising the following specific steps: the system comprises a mechanical frame, a measurement system, a control system, a power supply system and a man-machine interaction system; the machine frame adopts a stable test frame formed by aluminum alloy profiles, a platform driven by a motor is integrated and used for bearing a sample, the measuring system comprises an electronic balance and a deformation measuring unit, the electronic balance is arranged below the lifting platform, the deformation measuring unit is used for measuring deformation of the soil sample, the control system comprises a core controller, a motor driving device and a data acquisition device, the power supply system is used for supplying power to the control system and the measuring system, and the man-machine interaction system adopts a touch screen as a display and operation interface.

Description

Full-automatic soil shrinkage tester and control method thereof Technical Field The invention belongs to the technical field of control, and particularly relates to a full-automatic soil shrinkage tester and a control method thereof. Background The traditional soil shrinkage test relies on manual operation, and the main process comprises the steps of manually placing a soil sample, regularly taking down the sample for weighing, manually reading displacement data of a dial indicator, manually recording and the like. The method has the obvious defects of low efficiency, long test period, frequent manual intervention, large error, easy introduction of subjective error in manual reading and recording, possibility of disturbing soil samples during weighing, incapability of continuous monitoring, difficulty of realizing unattended long-term continuous data acquisition and incapability of completely capturing the whole shrinkage process. In order to solve the technical problems, for example, in an invention patent application CN202510669688.0, an automatic soil shrinkage measuring process test system and method, the three-dimensional model of remolded soil samples at different times is compared to obtain the changes in the volume and vertical height of the remolded soil samples at different times, so as to obtain a soil shrinkage curve. The invention has the beneficial effects that the artificial disturbance is avoided, the complexity of test operation is reduced, the continuously variable data in the whole process can be obtained, the obtained data is more representative, but the following defects are also present: the variation of the speed of the platform may cause the variation of the monitoring reliability of the volume variation obtained by laser scanning, so that how to determine the test processing methods in different speed intervals according to the variation deviation of the deformation curve in the same soil sample in different speed intervals so as to obtain the speed interval meeting the requirement as soon as possible, thereby improving the reliability of the deformation monitoring process is a technical problem to be solved urgently. In order to solve the technical problems, the application provides a full-automatic soil shrinkage tester and a control method thereof. Disclosure of Invention In order to achieve the purpose of the invention, the invention adopts the following technical scheme: specifically, the application provides a control method of a full-automatic soil shrinkage tester, which specifically comprises the following steps: s1, determining a volume change curve of soil along with water content change by using a soil shrinkage tester, determining an abnormal change period in a history measurement process by using the volume change curve, and determining an adjustment strategy of test rotation speed based on the data of the abnormal change period and the superposition degree of the abnormal change period; S2, performing adjustment processing of the test rotation speed by using the adjustment strategy, determining a screening rotation speed section in the test rotation speed section according to the association degree of the volume change curve and other test rotation speed sections, and determining the test control sequence of the screening rotation speed section by using test process data of which the volume change curve in the screening rotation speed section meets the requirement and combining the association degree of the test process of which the volume change curve meets the requirement and the volume change curve of other test rotation speed sections; And S3, performing test control processing of different screening rotation speed intervals according to the test control sequence, and determining a test control method of the full-automatic soil shrinkage tester in the screening rotation speed interval which is not tested based on the consistency degree of the volume change curve in the screening rotation speed interval and screening rotation speed interval data of the existing test completion. The invention has the beneficial effects that: According to the association degree of the volume change curve and other test rotation speed intervals, the screening rotation speed intervals in the test rotation speed intervals are determined, the rotation speed intervals with stable measurement results and high reliability of the measurement results are screened out of a plurality of alternative test rotation speed intervals, the rotation speed intervals are used as recommended rotation speed ranges of the follow-up soil shrinkage test, specifically, the screening of the rotation speed intervals with stable measurement results and high reliability of the measurement results is carried out according to the similarity degree of the measurement results and the stability degree of the measurement results of the other rotation speed intervals, and a foundation is laid for further targeted verific