Vibrating wire type seepage pressure intelligent acquisition method

Abstract

The invention provides a vibrating wire type seepage pressure intelligent acquisition method. The vibrating wire type seepage pressure intelligent acquisition method comprises the steps of MCU output excitation voltage adjustment, osmometer debugging position installation, osmometer initial value intelligent reading, parameter input, osmometer initial value self-checking, error self-checking before formal acquisition and formal acquisition. According to the method, data acquisition errors in dam vibrating wire type osmotic pressure safety monitoring can be effectively reduced, and conversion from a manual calibration mode to an intelligent calibration mode for vibrating wire type osmometer acquisition is realized; the osmotic pressure monitoring calibration efficiency can be obviously improved, and the osmotic pressure monitoring capability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dam safety seepage pressure monitoring. It relates to a vibrating string type seepage pressure intelligent acquisition method. Background Art

[0002] As is known, seepage pressure is one of the key indicators reflecting the safety of dams. Vibrating-string osmometers are commonly used to monitor seepage pressure in water conservancy projects such as reservoir dams and dikes. The traditional vibrating-string osmometer monitoring device (MCU) consists of a power module, a vibrating-string module, an acquisition control module, a computing unit, a transmission module, and a display module. The power module uses a fixed output excitation voltage. The osmometer parameters are imported into the monitoring device through software. The initial value setting and calibration of the osmometer are all done manually, and the relevant data are imported into the monitoring device through software.

[0003] In actual applications, the lengths of hydraulic cables used to connect the vibrating-string osmometers to the MCU are different, and the cable resistance value often changes unpredictably due to pulling during the cable laying process, which will cause different degrees of voltage drop when the excitation voltage sent from the MCU to the osmometer end, thereby affecting the oscillation frequency value of the osmometer and increasing the acquisition error of the osmometer. Furthermore, the existing MCU has no parameter input device and only relies on the background software parameter input, which affects the efficiency of on-site osmometer debugging and increases the difficulty of on-site data review. Furthermore, the existing MCU initial value and osmometer value calibration are all completed by professional technicians, and then the relevant data is imported into the MCU through software. Because the initial value of the vibrating-string osmometer needs to wait for the value to stabilize when reading, but the waiting time of different osmometers is different, it is easy to make misjudgments if it depends solely on manual judgment, which affects the accuracy of the read value and also affects the efficiency of data comparison and calibration. Summary of the invention

[0004] The present invention proposes a vibrating-string seepage pressure intelligent monitoring device and a high-precision data acquisition method, aiming to reduce the error in the safe monitoring of dam seepage pressure, improve the efficiency of seepage pressure monitoring calibration, and enhance the seepage pressure monitoring capability.

[0005] To achieve the purpose of the present invention, the present invention provides a vibrating-wire type seepage pressure intelligent acquisition method, comprising the following steps:

[0006] Step a, adjusting the MCU output excitation voltage: adding an excitation voltage adjustment module to the MCU, and adjusting the MCU output excitation voltage until the output voltage of the osmometer terminal meets the rated voltage requirement;

[0007] Step b, install the piezometer debugging position: add a button to read the initial value of seepage pressure on the MCU, and install the piezometer at the water surface position of the pressure measuring tube;

[0008] Step c, intelligent reading of the initial value of the osmometer: start the button and complete the intelligent reading of the initial value of the osmometer;

[0009] Step d, parameter input: add a parameter input module on the MCU to manually input various parameters required for the osmometer calculation;

[0010] Step e, self-checking of the initial value of the osmometer: the MCU configures the osmometer solution model, completes the data reading of the osmometer and the automatic solution based on the set parameters, and the device performs automatic verification and discrimination to finally obtain a stable initial value;

[0011] Step f, error self-check before formal collection: after starting the MCU formal measurement, the device automatically completes the consistency check and error check of the data;

[0012] Step g, formal collection: perform regular collection according to the manually set collection and reporting time, transmit the data to the cloud platform, and store and display it locally.

[0013] Further technology of the present invention: Step c comprises the following steps:

[0014] Step c1, automatically reading the current reading of the osmometer according to the test collection time interval t;

[0015] Step c2: Compare the consistency of consecutive readings. If the data collected three times are consistent, the last reading is recorded as the initial reading of the osmometer.

[0016] Further technology of the present invention: the parameters in step d specifically include:

[0017] Technical modulus of piezometer, elevation of piezometer mouth, design installation elevation of piezometer, allowable error of piezometer δ, water surface elevation of piezometer H, test collection time interval t, formal collection time interval T.

[0018] Further technology of the present invention: said step e comprises the following steps:

[0019] Step e1, reading the osmotic pressure data every 2 minutes, and solving the read osmometer data according to the osmotic pressure value solving model built into the MCU;

[0020] Step e2, compare the consistency of continuous osmometer readings. If the data collected for three consecutive times are consistent, compare the osmometer reading value with the osmometer allowable error δ. If the measured value is between (-δ, +δ), the last reading data within the allowable error range is recorded as the final initial value, and the initial value debugging is ended.

[0021] Further technology of the present invention: said step f comprises the following steps:

[0022] Step f1, add a formal measurement start button on the MCU, formally install the osmometer, and measure;

[0023] Step f2: collect and calculate the measured osmotic pressure values, and compare the consistency of the continuous osmometer readings until the data collected for three consecutive times are consistent.

[0024] Further technology of the present invention: said step g comprises the following steps:

[0025] Determine whether the measured value is between (H-δ, H+δ). If so, the error is within the allowable range, and then automatically collect data at regular intervals T and automatically store, transmit, and display the data. Otherwise, the error is large, and the error limit prompt is automatically stored and sent.

[0026] Compared with the prior art, the present invention has the following beneficial effects: by adding an MCU output excitation voltage adjustment hardware module and initial value intelligent reading, self-checking and other software functions, the data acquisition error in the vibrating-string seepage pressure safety monitoring of the dam can be effectively reduced, and the manual calibration method of the vibrating-string piezometer can be transformed into an intelligent calibration method; by adding MCU collected data consistency verification and automatic judgment of allowable errors, the seepage pressure monitoring calibration efficiency can be significantly improved, and the seepage pressure monitoring capability can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0029] like Figure 1 , a vibrating string type seepage pressure intelligent acquisition method, comprising the following steps:

[0030] Step a, adjusting the MCU output excitation voltage: adding an excitation voltage adjustment module to the MCU, and adjusting the MCU output excitation voltage until the output voltage of the osmometer terminal meets the rated voltage requirement;

[0031] The step a comprises the following steps:

[0032] Step a1, transforming the excitation voltage circuit of the traditional MCU so that the excitation voltage value output by the MCU can be infinitely adjusted;

[0033] Step a2, manually monitor the voltage drop between the excitation voltage at the osmometer end and the output excitation voltage at the MCU end, and adjust the MCU output voltage until the osmometer end voltage is equal to the rated excitation voltage of the osmometer.

[0034] Step b, install the piezometer debugging position: add a button to read the initial value of seepage pressure on the MCU, and install the piezometer at the water surface position of the pressure measuring tube;

[0035] Step c, intelligent reading of the initial value of the osmometer: start the button and complete the intelligent reading of the initial value of the osmometer;

[0036] Step c1, automatically reading the current reading of the osmometer according to the test collection time interval t;

[0037] Step c2: Compare the consistency of consecutive readings. If the data collected three times are consistent, the last reading is recorded as the initial reading of the osmometer.

[0038] Step d, parameter input: add a parameter input module on the MCU to manually input various parameters required for the osmometer calculation;

[0039] The parameters in step d specifically include:

[0040] Technical modulus of piezometer, elevation of piezometer mouth, design installation elevation of piezometer, allowable error of piezometer δ, water surface elevation of piezometer H, test collection time interval t, formal collection time interval T.

[0041] Step e, self-checking of the initial value of the osmometer: the MCU configures the osmometer solution model, completes the data reading of the osmometer and the automatic solution based on the set parameters, and the device performs automatic verification and discrimination to finally obtain a stable initial value;

[0042] The step e comprises the following steps:

[0043] Step e1, reading the osmotic pressure data every 2 minutes, and solving the read osmometer data according to the osmotic pressure value solving model built into the MCU;

[0044] Step e2, compare the consistency of continuous osmometer readings. If the data collected for three consecutive times are consistent, compare the osmometer reading value with the osmometer allowable error δ. If the measured value is between (-δ, +δ), the last reading data within the allowable error range is recorded as the final initial value, and the initial value debugging is ended.

[0045] Step f, error self-check before formal collection: after starting the MCU formal measurement, the device automatically completes the consistency check and error check of the data;

[0046] The step f comprises the following steps:

[0047] Step f1, add a formal measurement start button on the MCU, formally install the osmometer, and measure;

[0048] Step f2: collect and calculate the measured osmotic pressure values, and compare the consistency of the continuous osmometer readings until the data collected for three consecutive times are consistent.

[0049] Step g, formal collection: perform regular collection according to the manually set collection reporting time, transmit the data to the cloud platform, and store and display it locally. Step g includes the following steps:

[0050] Determine whether the measured value is between (H-δ, H+δ). If so, the error is within the allowable range, and then automatically collect data at regular intervals T and automatically store, transmit, and display the data. Otherwise, the error is large, and the error limit prompt is automatically stored and sent.

[0051] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A vibrating-wire type seepage pressure intelligent collection method, characterized in that: The following steps are involved: Step a, adjusting the MCU output excitation voltage: adding an excitation voltage adjustment module to the MCU, and adjusting the MCU output excitation voltage until the output voltage of the osmometer terminal meets the rated voltage requirement; Step b, install the piezometer debugging position: add a button to read the initial value of seepage pressure on the MCU, and install the piezometer at the water surface position of the pressure measuring tube; Step c, intelligent reading of the initial value of the osmometer: start the button and complete the intelligent reading of the initial value of the osmometer; Step d, parameter input: add a parameter input module on the MCU to manually input various parameters required for the osmometer calculation; Step e, self-checking of the initial value of the osmometer: the MCU configures the osmometer solution model, completes the data reading of the osmometer and the automatic solution based on the set parameters, and the device performs automatic verification and discrimination to finally obtain a stable initial value; Step f, error self-check before formal collection: after starting the MCU formal measurement, the device automatically completes the consistency check and error check of the data; Step g, formal collection: perform regular collection according to the manually set collection and reporting time, transmit the data to the cloud platform, and store and display it locally.

2. A vibrating-wire type seepage pressure intelligent collection method according to patent claim 1, characterized in that: Step c comprises the following steps: Step c1, automatically reading the current reading of the osmometer according to the test collection time interval t; Step c2: Compare the consistency of consecutive readings. If the data collected three times are consistent, the last reading is recorded as the initial reading of the osmometer.

3. A vibrating-wire type seepage pressure intelligent collection method according to patent claim 1, characterized in that: The parameters in step d specifically include: Technical modulus of piezometer, elevation of piezometer mouth, design installation elevation of piezometer, allowable error of piezometer δ, water surface elevation of piezometer H, test collection time interval t, formal collection time interval T.

4. A vibrating-wire type seepage pressure intelligent collection method according to patent claim 3, characterized in that: The step e comprises the following steps: Step e1, reading the osmotic pressure data every 2 minutes, and solving the read osmometer data according to the osmotic pressure value solving model built into the MCU; Step e2, compare the consistency of continuous osmometer readings. If the data collected for three consecutive times are consistent, compare the osmometer reading value with the osmometer allowable error δ. If the measured value is between (-δ, +δ), the last reading data within the allowable error range is recorded as the final initial value, and the initial value debugging is ended.

5. A vibrating-wire type seepage pressure intelligent collection method according to patent claim 4, characterized in that: The step f comprises the following steps: Step f1, add a formal measurement start button on the MCU, formally install the osmometer, and measure; Step f2: collect and calculate the measured osmotic pressure values, and compare the consistency of the continuous osmometer readings until the data collected for three consecutive times are consistent.

6. A vibrating-wire type seepage pressure intelligent collection method according to patent claim 5, characterized in that: The step g comprises the following steps: Determine whether the measured value is between (H-δ, H+δ). If so, the error is within the allowable range, and then automatically collect data at regular intervals T and automatically store, transmit, and display the data. Otherwise, the error is large, and the error limit prompt is automatically stored and sent.

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