Intelligent portable tidal monitoring and early warning device and method

Abstract

The present invention discloses an intelligent portable tidal monitoring and early warning device and method, the intelligent portable tidal monitoring and early warning device comprising a mechanical part and an electrical part, the mechanical part comprising a vertical support unit (5) and a lateral support unit (3) connected thereto, and a stabilizing unit (9) connected to a foundation; the electrical part comprising a detection unit (1) arranged on the lateral support unit (3), and a display memory unit (6), a data processing unit (10) and a signal transmission and alarm unit (11) connected to the detection unit (1); the detection unit (1) collects the distance between the detection point and the water surface by setting a detection point and converts it into relevant signal data. The present invention not only meets the portability of the device, but also has accurate monitoring data, and can accurately capture and record real-time data of the tide and its changing trend, further improving the efficiency and safety of ship operations and roll-on / roll-off operations of super-large industrial module devices.

Description

Technical Field

[0001] The present invention relates to the field of ocean monitoring technology, and in particular to an intelligent portable tidal monitoring and early warning device and a tidal data monitoring and early warning method. Background Art

[0002] The measurement of water level has existed since ancient times. The simplest method is to mark the shore and then add a ruler to the mark to determine the water depth. In places where it is inconvenient to reach the bottom, a ruler is hung from the shore, and the depth minus the length of the ruler is used to obtain the elevation of the water level. Later, with the advancement of technology, laser water level measurement, ultrasonic water level measurement and other methods were used to measure water level.

[0003] In the current era of globalization and rapid technological development, industrial equipment is moving towards an integrated, heavy, large-scale, modular manufacturing, transportation and installation trend. Its industrialized devices are often several orders of magnitude larger than conventional large cargo in terms of size, weight and structural complexity. In the face of such a behemoth, traditional maritime transportation methods, loading methods and transportation tools have become inadequate. Therefore, the industry has begun to turn to the use of professional semi-submersible vessels or self-propelled deck ships with ballast capacity, combined with customized self-propelled modular transporters SPMT. This combination has become the mainstream loading and unloading method for transporting these large cargoes. The so-called roll-on / roll-off technology refers to the water transportation of large-volume cargo. During the process of loading and unloading from the ship, equipment with lifting technology cannot be used, and wheeled transport vehicles can only be used to load onto the ship from one side of the dock. This loading and unloading method is called roll-on / roll-off, and the use of large modular devices to implement roll-on / roll-off technology for heavy-duty cargo means that during tidal changes, the barge adjusts its own height by increasing and decreasing the pressure in the tank water to always keep the barge deck at the same height as the dock, and uses a self-propelled hydraulic flatbed transporter SPMT to move large modular devices and other heavy-duty cargo from the dock to the pre-stowage position of the ship.

[0004] We know that the ocean is an open water body. The area of ​​the ro-ro operation terminal for heavy cargo will inevitably be affected by tides and waves. If there is a large deviation between the actual water level of the tide and the predicted water level of the tide, it may not only seriously affect the construction work on the ro-ro ship, but also may cause safety accidents and bring immeasurable losses. The key to ensuring the safe loading of heavy cargo on the ro-ro ship is to accurately measure the height of the tide and its changing trend. However, due to the limitations of geographical location and terrain, the existing ro-ro operation terminals often have few and fixed measurement points, resulting in the actual tidal water level value and the predicted water level value of the tide table. There are uncertainties that cannot be ignored. This deviation between the predicted water level value and the actual water level value may not only cause the wrong judgment of the best time window for ro-ro operation, but also may cause the failure of ro-ro loading operation, thus bringing significant risks to logistics and transportation business. Therefore, the owners, terminal managers and shipping companies have an increasingly urgent need to conveniently monitor accurate tidal data at multiple points in real time.

[0005] In the prior art, tidal measuring equipment mainly includes two types: ordinary portable manual measuring type and semi-permanent fixed type. Although ordinary portable manual measuring equipment can be moved, it requires long-term manual operation and recording when measuring data, and the relevant data cannot be output, and the data cannot be used for secondary analysis, which will cause certain errors in the monitoring data; and compared with the portable manual measuring equipment, the semi-permanent fixed equipment does not require long-term manual operation and recording, and its monitoring data is relatively accurate, but the equipment is difficult to move and cannot meet the needs of multi-site measurement. In the prior art, waves are unstable factors in tidal data monitoring. The existing tidal measuring equipment cannot completely eliminate the impact of waves on tidal data. The relevant data often cause huge differences between the actual tidal data and the predicted data of the tidal table due to the factors of waves, which greatly affects the accuracy of the monitoring data, and cannot guarantee the safety of ship roll-on and roll-off construction operations. When the waves change, the tidal measuring equipment cannot be monitored in time, resulting in certain safety hazards during the ship loading operation, especially the failure to provide early warning reports for long-term operation sites.

[0006] Another situation is that the terminal company's focus is on fixed locations all year round, and their tidal measuring equipment can be fixed at one point without moving; while the shipping company's customer departure point can be remote locations across the country or across countries, or even factory-owned docks in remote places, and their tidal data does not even have historical accumulation, so on-site measurement is more important, and fixed measuring instruments are expensive and very bulky, and it is impossible to install them everywhere. As owners, dock parties, shipping companies, and third-party maritime on-site supervisors, they must have their own tidal measuring instruments that can measure water level data in real time and accurately to ensure the safety of heavy cargo roll-on / roll-off operations. In addition, some wave observations and elevation corrections have large visual errors and are confusing, and they require convenient precision measurement methods to supplement and correct them, which has greatly increased the demand for intelligent portable monitoring equipment.

[0007] The entire process of ro-ro operation of heavy cargo often takes up to 3-5 hours to complete. During the ro-ro operation of heavy cargo, the deck of the ship needs to be kept flush with the dock at all times. Therefore, in order to ensure the smooth progress of the operation, accurate measurements must be carried out for several consecutive days before the ro-ro operation begins to capture the exact height value of the tide level and the specific curve of the tidal change. During this process, special attention should be paid to whether there are abnormal ultra-high or ultra-low tidal peaks, which may have an adverse effect on the ro-ro operation. Summary of the invention

[0008] In order to solve the problems of portability of the above-mentioned tidal measuring equipment and the inability to ensure the accuracy of monitoring data, as well as the problem that the existing tidal measuring equipment cannot eliminate the impact of waves on tidal data, the present invention proposes an intelligent portable tidal monitoring and early warning device and a tidal data monitoring and early warning method.

[0009] The intelligent portable tidal monitoring and early warning device proposed in the present invention comprises a mechanical part and an electrical part, wherein the mechanical part comprises a vertical support unit and a lateral support unit connected thereto, and a stabilizing unit connected to a foundation;

[0010] The electrical part includes a detection unit arranged on the lateral support unit, and a display memory unit, a data processing unit and a signal transmission and alarm unit connected to the detection unit;

[0011] The detection unit collects the distance between the detection point and the water surface and converts it into relevant signal data by setting the detection point. The detection unit is installed at one end of the lateral support unit. Detection equipment such as radar, laser and pressure sensor can be selected. The connection method between the detection unit and the lateral support unit is not limited to bolts, embedded methods, etc. The detection unit is installed vertically with the lateral support unit and the height of the detection point is not less than one meter. To ensure the accuracy of the measurement, before the measurement, the lower end of the detection unit is kept vertical to the water surface by adjusting the horizontal adjustment unit;

[0012] The display memory unit stores the collected data, receives the data collected by the detection unit in a wired or wireless manner, and completes data transmission with an external device;

[0013] The data processing unit shown in the figure pre-stores the local tide table data and the current roll-on / roll-off task schedule, receives the measurement data collected by the detection unit and the tide data that has eliminated the influence of waves, records the difference and regularity between the measured tide data and the historical tide table data, and sends the relevant data to the signal transmission and alarm unit. The display memory unit is embedded in the vertical support unit and equipped with a matching rubber ring for waterproofing. The display memory unit displays the height of the dock from the water surface and the tide height of the dock in real time, and displays the change curve of the tide for at least 24 hours. The single continuous acquisition time of the display memory unit is recommended to be at least ten seconds, and the recorded data is the maximum value within the continuous acquisition time. The recording output interval time setting is recommended to be at least ten minutes, which can also be set as required. The display memory unit is used to store data, support data processing end debugging, data playback and analysis, increase the flexibility of equipment use and the diversity of data analysis, and can also be used as a port for directly displaying information, output various numbers, graphics, tables, comparisons and other information, with the characteristics of intuitive information expression, high information output accuracy, strong reliability, and easy analysis and operation.

[0014] As a further improvement of the present invention, the signal transmission and alarm unit is a network access circuit, which pushes the received alarm image, text and sound signals to a designated target device.

[0015] As a further improvement of the present invention, the signal transmission and alarm unit is a telephone switching circuit, which pushes the received alarm image, text and sound signals to a designated target telephone.

[0016] As a further improvement of the present invention, the electrical part also includes a power supply unit, which is built into the vertical support unit and is wired to the video memory unit, the detection unit and the signal transmission and alarm unit. The power supply unit can be selected as a customized fixed embedded power supply or a mobile power supply to meet the use in places where wires cannot be pulled, and the capacity of the mobile power supply meets the transportation requirements of air and rail transportation; to meet the waterproof requirements, the height of the power supply unit from the ground is recommended to be no less than twenty centimeters.

[0017] As a further improvement of the present invention, the lateral support unit is a telescopic folding structure, which further includes a locking mechanism, a telescopic mechanism and a folding mechanism, so as to adjust the detection angle and ensure that the detection unit is extended to a sufficient distance from the shore;

[0018] The mechanical part further comprises a horizontal display unit horizontally arranged on the top of the vertical supporting unit to observe the vertical condition of the vertical supporting unit.

[0019] As a further improvement of the present invention, the mechanical part also includes a horizontal adjustment unit arranged at the bottom of the vertical support unit, the horizontal adjustment unit is arranged between the vertical support unit and the stabilizing unit, and is composed of four foot screws; the stabilizing unit is connected to the support module by bolts, and the stabilizing unit can be a steel chassis or a magnetic chassis, and its suction force is not less than 20 kilograms, and the detection angle adjustment unit is arranged on the detection unit to adjust the angle of the detection unit.

[0020] The tidal data monitoring and early warning method proposed in the present invention comprises the following steps:

[0021] Step 1: Turn on the equipment, input the detection unit height H0, dock elevation H1, detection angle θ, and the values ​​of continuous collection time and collection interval, and input the operation warning tide height threshold PH and equipment operation time value SJ;

[0022] Step 2: The device continuously collects the distance H value from the detection unit to the water surface and stores it as a distance value data set;

[0023] Step 3: Eliminate the abnormal data contained in the above distance H value data set and establish a data set of H*COSθ, i.e., H2i value;

[0024] Step 4: Process the data set of H*COSθ, i.e., H2i value, to obtain the wave period T;

[0025] Step 5: Sum and average the H*COSθ, i.e., H2i, values ​​within the wave period T to obtain the distance H2 from the detection unit to the water surface within this period;

[0026] Step 6: Obtain the tidal height value THi in this cycle through the formula TH=(H0+H1)-H2, and record and store the corresponding THi value;

[0027] Step 7: Read the TH value database according to the THi value, estimate the value of the tidal height TH within 24 hours, and display it on the digital display unit of the equipment in the form of a chart or numbers; at the same time, determine whether the current THi value exceeds the operation warning tidal height threshold PH. If it exceeds, issue a warning forecast request and go to step eight; if it does not exceed, go to step nine. During the operation of the equipment, the corresponding input value and time value can be adjusted again through the digital display unit. After completing the corresponding adjustment, the equipment re-executes step two and re-confirms the setting of the link to better ensure the safety of the roll-on / roll-off task of super-large equipment to avoid major safety accidents of personnel and equipment;

[0028] Step 8: The equipment immediately starts verification testing to confirm whether the current tide height value THi exceeds the set operation warning tide height threshold PH; if it exceeds, the equipment sends a warning alarm through signal transmission and the alarm unit until the warning alarm is lifted, and then the equipment goes to step 1; if it does not exceed, it goes to step 2;

[0029] Step 9: Determine whether the current running time of the device exceeds the set device running time value SJ. If it exceeds, the device is shut down; if it does not exceed, go to step 2. This step is set to shut down the device for rest after the staged task is completed and save the local valuable tidal data in time to avoid abnormal shutdown of the device and possible data loss.

[0030] The beneficial effects of the present invention are as follows: it provides an intelligent portable tidal monitoring and early warning device with a light overall structure, easy to carry and maintain, no need for long-term manual operation, and accurate data monitoring. It adopts cutting-edge high-precision measurement technology, and can accurately capture and record real-time tidal data and its changing trends to meet the needs of tidal data monitoring in different project locations. The tidal monitoring and early warning device effectively eliminates the impact of waves on tidal data by adopting a tidal data monitoring and early warning method, directly records the real data of the water surface tidal value, and saves the data through a data storage module, thereby realizing the digitization, precision and predictability of the ship operation window, greatly ensuring the accuracy and stability of the monitoring data, and further improving the efficiency and safety of ship operations and roll-on and roll-off operations of large-tonnage and large-volume equipment by setting an operation warning tidal height threshold reminder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of the intelligent portable tidal monitoring and early warning device of the present invention;

[0032] Figure 2 It is a schematic diagram of the installation of the intelligent portable tidal monitoring and early warning device of the present invention;

[0033] Figure 3 It is a monitoring schematic diagram of the intelligent portable tidal monitoring and early warning device of the present invention;

[0034] Figure 4 It is a flow chart of the tidal data monitoring and early warning method of the present invention;

[0035] Figure 5 It is a schematic diagram of the numerical value acquisition position of the tidal data monitoring and early warning method of the present invention;

[0036] Figure 6 It is a schematic diagram of the real water level and the second-by-second sampling points of the tidal data monitoring and early warning method of the present invention;

[0037] Figure 7It is a schematic diagram of the real water level and the calculated water level of the tidal data monitoring and early warning method of the present invention.

[0038] The corresponding relationship between the reference numerals and the component names is as follows:

[0039] 1—Detection unit; 2—Detection angle adjustment unit; 3—Lateral support unit;

[0040] 4—horizontal display unit; 5—vertical support unit; 6—video memory unit;

[0041] 7—power supply unit; 8—level adjustment unit; 9—stabilization unit;

[0042] 10—data processing unit; 11—signal transmission and alarm unit;

[0043] 201—upper rotating frame; 202—hand-tightening bolt group; 203—lower adjustment tray;

[0044] 301 - locking mechanism; 302 - telescopic mechanism; 303 - folding mechanism; 304 - connecting mechanism;

[0045] 801—ball head universal bolt; 802—fastening nut; 803—universal joint sleeve;

[0046] 804—universal joint cross shaft; 805—universal joint base;

[0047] And A—steel plate; B—dock surface; C—wave surface. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, the intelligent portable tidal monitoring and early warning device includes: a detection unit 1, a detection angle adjustment unit 2, a lateral support unit 3, a horizontal display unit 4, a vertical support unit 5, a video memory unit 6, a power supply unit 7, a horizontal adjustment unit 8, a stabilization unit 9, a data processing unit 10 and a signal transmission and alarm unit 11.

[0051] The intelligent portable tidal monitoring and early warning device proposed in the present invention comprises a mechanical part and an electrical part. The mechanical part comprises a vertical support unit 5 and a lateral support unit 3 connected thereto, a detection angle adjustment unit 2, a horizontal display unit 4, a horizontal adjustment unit 8, and a stabilizing unit 9 connected to a foundation; the lateral support unit 3 is a telescopic folding structure, which further comprises a locking mechanism 301, a telescopic mechanism 302 and a folding mechanism 303, which are used to adjust the detection angle of the detection unit 1 and ensure that the detection unit 1 is extended far enough from the shore to detect data and avoid being affected by the embankment; the horizontal display unit 4 is horizontally arranged on the top of the vertical support unit 5 to observe the vertical support unit 5. 5, the horizontal adjustment unit 8 is arranged between the vertical support unit 5 and the stabilizing unit 9, and is composed of four foot screws; the foot screw is composed of a ball head universal bolt 801, a fastening nut 802, a universal joint sleeve 803, a universal joint cross shaft 804 and a universal joint base 805. The stabilizing unit 9 is connected to the support module by bolts. The stabilizing unit 9 can be a steel chassis or a magnetic chassis with a suction force of not less than 20 kilograms. The detection angle adjustment unit 2 is arranged on the detection unit 1, and is composed of an upper rotating frame 201, a hand-tightened bolt group 202 and a lower adjustment tray 203 to adjust the angle of the detection unit 1.

[0052] The electrical part includes a detection unit 1 arranged on the lateral support unit 3, and a display memory unit 6, a power supply unit 7, a data processing unit 10 and a signal transmission and alarm unit 11 connected to the detection unit 1; the detection unit 1 collects the distance between the detection point and the water surface by setting a detection point and converts it into relevant signal data. The detection unit 1 is installed at one end of the lateral support unit 3, and detection equipment such as radar, laser and pressure sensor can be selected. The connection method with the lateral support unit 3 is not limited to bolts, embedded methods, etc. The detection unit 1 is vertically installed with the lateral support unit 3 and the height of the detection point is not less than one meter; to ensure the accuracy of the measurement, before the measurement, the horizontal adjustment unit 8 is adjusted to make the lower end of the detection unit 1 vertical to the water surface. The power supply unit 7 is built in the In the vertical support unit 5, it is wiredly connected with the video memory unit 6, the detection unit 1 and the signal transmission and alarm unit 11. The power supply unit 7 can be selected as a customized fixed embedded power supply, or it can be selected as a mobile power supply to meet the use in places where wires cannot be pulled, and the capacity of the mobile power supply meets the transportation requirements of air and rail transportation; to meet the waterproof requirements, the height of the power supply unit 7 from the ground is not less than twenty centimeters, the video memory unit 6 is embedded in the vertical support unit 5, and is equipped with a matching rubber ring for waterproofing, and receives the data collected by the detection unit 1 by wired or wireless means, stores the collected data, and completes data transmission with external devices; the video memory unit 6 displays the height of the dock from the water surface and the tide height in real time, and displays the tide change curve for at least twenty-four hours. The single continuous acquisition time of the display memory unit 6 is at least ten seconds, the recorded data is the maximum value within the continuous acquisition time, the record output interval is set to at least ten minutes, and can also be set as required. The display memory unit 6 is used to store data and support data processing end debugging and data playback and analysis, increase the flexibility of equipment use and the diversity of data analysis, and can also be used as a port for directly displaying information, output various digital, graphic, table, comparison and other information, with the characteristics of intuitive information expression, high information output accuracy, strong reliability, easy analysis and operation, etc. The data processing unit 10 pre-stores local tide table data and current roll-on / roll-off task schedule, receives the measurement data collected by the detection unit 1 and the tide data that has eliminated the influence of waves, records the differences and rules between the measured tide data and the historical tide table data, and sends the relevant data to the signal transmission and alarm unit 11, which can be a network access circuit to push the received alarm image, text and sound signal to the designated target device, or a telephone switching circuit to push the received alarm image, text and sound signal to the designated target phone.

[0053] Regarding early warning, during the roll-on / roll-off of heavy cargo, abnormal tidal water levels or other emergencies that require suspension of operations may occur, which puts higher early warning requirements on tidal monitoring equipment. One is to determine whether suitable tidal conditions exist to continue the roll-on / roll-off operation after the waiting period for the operation to be suspended, to ensure that the operation can be quickly restarted under safe and appropriate conditions. The other is to monitor whether the tidal water level is too high or too low during the suspension of operations. If abnormal tidal water levels are detected, corresponding measures may need to be taken, such as releasing the roll-on / roll-off connection between the ship and the shore, to avoid potential safety accidents. Figure 4 and Figure 5 As shown, the tidal data monitoring and early warning method proposed in the present invention includes the following steps for specific processing and alarm operation:

[0054] Step 1: Turn on the equipment, input the detection unit height H0, dock elevation H1, detection angle θ, and the values ​​of continuous collection time and collection interval, and input the operation warning tide height threshold PH and equipment operation time value SJ;

[0055] Step 2: The device continuously collects and stores the distance H value from the detection unit to the water surface;

[0056] Step 3: Eliminate the abnormal data contained in the H value data set and establish the H*COSθ or H2i value data set;

[0057] Step 4: Process the H*COSθ data set to obtain the wave period T;

[0058] Step 5: Sum and average the H*COSθ (H2i) values ​​within the wave period T to obtain the value of H2;

[0059] Step 6: Obtain the tidal height value THi in this cycle through the formula TH=(H0+H1)-H2, and record and store the corresponding THi value;

[0060] Step 7: Read the TH value database according to the THi value, estimate the value of the tidal height TH within 24 hours, and display it on the digital display unit of the equipment in the form of a chart or numbers; at the same time, determine whether the current THi value exceeds the operation warning tidal height threshold PH. If it exceeds, issue a warning forecast request and go to step 8; if it does not exceed, go to step 9;

[0061] Step 8: The device immediately starts verification testing to confirm again whether the current tide height value THi exceeds the set operation warning tide height threshold PH; if it exceeds, the device sends a warning alarm through the signal transmission and alarm unit 11, and the device goes to step 1 after the warning alarm is lifted; if it does not exceed, it goes to step 2;

[0062] Step 9: Determine whether the current running time of the device exceeds the set device running time value SJ. If it exceeds, the device is shut down; if it does not exceed, go to step 2.

[0063] like Figure 6 and Figure 7 As shown, the corresponding data detected by the intelligent portable tidal monitoring and early warning device proposed in the present invention, the tidal water level change curve is displayed on the digital display unit of the equipment through the tidal data monitoring and early warning method, in this way, the corresponding change value of the tidal water level can be clearly understood.

[0064] Some of the intelligent algorithm codes and notes in the method steps are as follows:

[0065] #1. Initial Setup

[0066] theta=90 #Detection angle theta, adjustable angles are 30, 45, 60, 90.

[0067] #Wharf elevation H1, measurement point elevation H3

[0068] H0=2.0 #The height of the monitor itself, the default is 2.0m

[0069] H1=3.3 #Elevation of the wharf. That is, the height of the wharf surface from the tidal height reference plane. H3=H0+H1

[0070] PH=15 # Operation warning tide height threshold

[0071] fs=1 # Collection frequency. It can be set from 0.5HZ to 1HZ, and the default is to collect once every second

[0072] time1=60 #Set the continuous acquisition time. The default is 1 minute.

[0073] pred = pd.DataFrame({

[0074] 'Time (seconds)':

[0075] 'Tide line':

[0076] }) #Predicted tide line

[0077] ZH=[]

[0078] #2 Tide height data collection

[0079] resampled_time = np.arange(0, time1+1 / fs, 1 / fs)

[0080] resampled = np.interp(resampled_time, time, combined)

[0081] CH=(H3-resampled) #The original data collected, i.e. the measured value

[0082] H2=CH*np.cos((90-theta) / 180*np.pi) #Eliminate the angle effect and calculate the actual water surface elevation

[0083] df = pd.DataFrame({

[0084] 'Time (seconds)': resampled_time,

[0085] 'Measurement value': CH,

[0086] 'Vertical distance H2(m)': H2

[0087] })

[0088] df.to_excel('Tide height collection data-date.xlsx', index=False)

[0089] """

[0090] #3 Preprocess the data

[0091] #Check whether the operation warning height is exceeded

[0092] if CH.any()>=PH:

[0093] print('Alarm! The water level measurement value exceeds the preset operation warning height')

[0094] exit(0)

[0095] #Preprocess to get the water surface height TH per second

[0096] TH=H3-H2

[0097] #Use box plot method to deal with outliers

[0098] TH = pd.Series(TH)

[0099] Q1 = TH.quantile(0.25)

[0100] Q3 = TH.quantile(0.75)

[0101] IQR = Q3 - Q1 # interquartile range

[0102] lower_bound = Q1 - 1.5 * IQR# Define the upper and lower limits

[0103] upper_bound = Q3 + 1.5 * IQR

[0104] TH = TH.clip(lower=lower_bound, upper=upper_bound) # Filter out outliers

[0105] """

[0106] #4Find out the tidal level during this time period

[0107] """

[0108] # Eliminate the wave effect

[0109] def a(resampled):

[0110] #Find the peaks and valleys

[0111] bf=[]

[0112] bg=[]

[0113] for i in range(len(resampled)-2):

[0114] n=i+1

[0115] if resampled[n]<=resampled[n-1] and resampled[n]<=resampled[n+1]:

[0116] bg.append(resampled[n])

[0117] if resampled[n]>=resampled[n-1] and resampled[n]>=resampled[n+1]:

[0118] bf.append(resampled[n])

[0119] bf_sorted = sorted(bf, reverse=True)

[0120] bg_sorted = sorted(bg)

[0121] #Calculate the equivalent peak and trough

[0122] num_bf = len(bf_sorted) / / 3

[0123] num_bg = len(bg_sorted) / / 3

[0124] if num_bf>0:

[0125] mean_bf = np.mean(bf_sorted[:num_bf])

[0126] else:

[0127] mean_bf = np.mean(bf_sorted)

[0128] if num_bg>0:

[0129] mean_bg = np.mean(bg_sorted[:num_bg])

[0130] else:

[0131] mean_bg = np.mean(bg_sorted)

[0132] #Calculate the water level without wave influence based on equivalent wave crests and troughs

[0133] tide=(mean_bg+mean_bf) / 2

[0134] return tide,mean_bf,mean_bg

[0135] tide,bf,bg=a(TH) #call function

[0136] jd=(tide_level-tide) / tide_level #Calculation error

[0137] print("The real water level is",tide_level)

[0138] print("Calculate the water level", tide)

[0139] print("error",jd)

[0140] ZH.append(tide) #record the results

[0141] #5 Draw a comparison between the actual water level curve and the predicted curve

[0142] """

[0143] plt.figure(figsize=(12, 6))

[0144] plt.axhline(y=pred, color='r', linestyle='-', label='Real water level RD')

[0145] plt.axhline(y=ZH, color='b', linestyle='-.', label='Predicted water level PD')

[0146] plt.xlabel('Time (min)')

[0147] plt.ylabel('Water level (m)')

[0148] plt.legend()

[0149] plt.title('Diagram of real water level curve and predicted curve')

[0150] Taking the measured data of a certain place as an example, H0=2.00m, H1=5.30m, H2=6.50m, then the tide height value THi=2.0+5.30-6.50=0.8m, the operation warning tide height threshold PH set by the equipment at that time was 1.5m, the tide height value THi did not exceed the set tide height threshold PH, the equipment continued to operate according to the set time SJ value, and no alarm was generated.

[0151] To sum up, the intelligent portable tidal monitoring and early warning device and tidal data monitoring and early warning method proposed in the present invention not only meet the portability of the device, but also have accurate monitoring data, and can accurately capture and record real-time tidal data and its changing trends to meet the needs of tidal data monitoring in different project locations, effectively eliminate the impact of waves on tidal data, realize the digitization, precision and predictability of ship operation windows, greatly ensure the accuracy and stability of monitoring data, and further improve the efficiency and safety of ship operations and roll-on / roll-off operations of large-tonnage and large-volume equipment by setting an operation warning tide height threshold reminder.

[0152] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the present invention.

Claims

1. An intelligent portable tidal monitoring and early warning device, comprising a mechanical part and an electrical part, characterized in that: The mechanical part comprises a vertical support unit (5), a lateral support unit (3) connected thereto, and a stabilizing unit (9) connected to a foundation; The electrical part comprises a detection unit (1) arranged on the lateral support unit (3), and a display memory unit (6), a data processing unit (10) and a signal transmission and alarm unit (11) connected to the detection unit (1); The detection unit (1) sets a detection point, collects the distance between the detection point and the water surface and converts it into relevant signal data; The display memory unit (6) stores the collected data, receives the data collected by the detection unit (1) via a wired or wireless method, and completes data transmission with an external device; The data processing unit (10) pre-stores local tide table data and a current roll-on / roll-off task schedule, receives the measurement data collected by the detection unit (1) and the tide data from which the influence of waves has been eliminated, records the differences and regularities between the measured tide data and the historical tide table data, and sends the relevant data to the signal transmission and alarm unit (11); The lateral support unit (3) is a telescopic and folding structure, which further comprises a locking mechanism (301), a telescopic mechanism (302) and a folding mechanism (303), which are used to adjust the detection angle and ensure that the detection unit (1) is extended to a sufficient distance from the shore; The mechanical part also includes a horizontal display unit (4), a horizontal adjustment unit (8) and a detection angle adjustment unit (2); The horizontal display unit (4) is horizontally arranged on the top of the vertical support unit (5) to observe the vertical condition of the vertical support unit (5); The horizontal adjustment unit (8) is arranged at the bottom of the vertical support unit (5), and the horizontal adjustment unit (8) is arranged above the stabilizing unit (9); The detection angle adjustment unit (2) is connected to the detection unit (1) to adjust the angle of the detection unit (1).

2. The intelligent portable tidal monitoring and early warning device according to claim 1 is characterized in that: The signal transmission and alarm unit (11) is a network access circuit that pushes the received alarm image, text and sound signals to a designated target device.

3. The intelligent portable tidal monitoring and early warning device according to claim 1 is characterized in that: The signal transmission and alarm unit (11) is a telephone switching circuit that pushes the received alarm image, text and sound signals to a designated target telephone.

4. The intelligent portable tidal monitoring and early warning device according to claim 2 or 3, characterized in that: The electrical part further comprises a power supply unit (7), which is built into the vertical support unit (5) and is wiredly connected to the display memory unit (6), the detection unit (1) and the signal transmission and alarm unit (11).

5. A method based on the intelligent portable tidal monitoring and early warning device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Turn on the equipment, input the detection unit height H0, dock elevation H1, detection angle θ, and the values ​​of continuous collection time and collection interval, and input the operation warning tide height threshold PH and equipment operation time value SJ; Step 2: The device continuously collects and stores the distance H value from the detection unit to the water surface; Step 3: Eliminate the abnormal data contained in the H value data set and establish the H*COSθ or H2i value data set; Step 4: Process the H*COSθ data set to obtain the wave period T; Step 5: Sum and average the H*COSθ (H2i) values ​​within the wave period T to obtain the value of H2; Step 6: Obtain the tidal height value THi in this cycle through the formula TH=(H0+H1)-H2, and record and store the corresponding THi value; Step 7: Read the TH value database according to the THi value, estimate the value of the tidal height TH within 24 hours, and display it on the digital display unit of the equipment in the form of a chart or numbers; at the same time, determine whether the current THi value exceeds the operation warning tidal height threshold PH. If it exceeds, issue a warning forecast request and go to step 8; if it does not exceed, go to step 9; Step 8: The device immediately starts verification testing to confirm again whether the current tide height value THi exceeds the set operation warning tide height threshold PH; if it exceeds, the device sends a warning alarm through the signal transmission and alarm unit (11), and the device goes to step 1 until the warning alarm is lifted; if it does not exceed, it goes to step 2; Step 9: Determine whether the current running time of the device exceeds the set device running time value SJ. If it exceeds, the device is shut down; if it does not exceed, go to step 2.

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