A valve opening monitoring system and valve position monitoring instrument

Abstract

The present invention discloses a valve opening monitoring system and a valve position monitor. The valve opening monitoring system includes a valve position monitor, a monitoring cloud platform and a WeChat applet; the valve position monitor is fixed on the valve handle, and the microcontroller of the valve position monitor is provided with a valve opening monitoring module, a remote communication module and a Bluetooth connection module, wherein: the valve opening monitoring module monitors the valve opening through a geomagnetic sensor provided in the valve position monitor; the remote communication module communicates and connects with the monitoring cloud platform through a 4G chip provided in the valve position monitor, and uploads the valve opening monitoring data to the monitoring cloud platform; the Bluetooth connection module connects with the WeChat applet of the staff's mobile phone through a Bluetooth chip provided in the valve position monitor. The valve opening monitoring system and valve position monitor described in the present invention can monitor the opening of each valve in real time.

Description

Technical Field

[0001] The invention belongs to the technical field of valve opening monitoring, and specifically refers to a valve opening monitoring system and a valve position monitoring instrument. Background Art

[0002] In many fields involving pipeline systems, such as industrial production, municipal water supply, oil and gas transportation, valves are key components for controlling the flow and on-off of fluids in pipelines. The precise control of their opening state plays an extremely critical role in the stable operation, safety and rational allocation of resources of the system.

[0003] At present, the common way to grasp the valve status is to use monitoring equipment for monitoring. The monitoring equipment is generally composed of sensors and data transmission devices. The sensors collect valve opening information and transmit it to the monitoring center through the data transmission device. However, this monitoring method also has many defects, such as: the function is relatively simple, with only a simple function of measuring the valve opening; due to installation errors, the installation errors will cause insufficient measurement accuracy, which is easy to cause detection data; in addition, the monitoring equipment needs to ensure power supply. Once the battery is exhausted and not replaced in time, the monitoring equipment will stop working, resulting in missing monitoring data, which brings great inconvenience and safety hazards to the management and operation of the pipeline system. Therefore, it is necessary to replace the battery regularly, and because the power consumption rate fluctuates, in order to avoid the battery being exhausted in advance when the power consumption is high, the battery needs to be replaced in advance, resulting in more frequent battery replacement. Summary of the invention

[0004] In order to overcome the problems of the prior art, the present invention designs a valve opening monitoring system and a valve opening detector, which are suitable for monitoring the status of pipeline valves in industry, commerce and public facilities. By combining traditional valves with advanced sensing technology, communication networks and cloud platforms, monitoring and intelligent management of valve status are provided.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a valve opening monitoring system, including a valve position monitor, a monitoring cloud platform and a mobile phone WeChat applet; the valve position monitor is fixed on the valve handle, and the microcontroller of the valve position monitor is provided with a valve opening monitoring module, a remote communication module and a Bluetooth connection module, wherein:

[0006] The valve opening monitoring module monitors the valve opening through a geomagnetic sensor provided in the valve position monitor;

[0007] The remote communication module is connected to the monitoring cloud platform through a 4G chip provided in the valve position monitor, and the valve opening monitoring data is uploaded to the monitoring cloud platform;

[0008] The Bluetooth connection module is connected to the WeChat applet on the staff's mobile phone through a Bluetooth chip arranged in the valve position monitor;

[0009] The valve opening monitoring module comprises:

[0010] The angle detection submodule detects the current rotation angle of the valve handle at a certain frequency through the geomagnetic sensor, and the angle range is arrive The geomagnetic sensor corrects the angle measured when the valve is fully closed to ;

[0011] The circle number recording unit records the number of circles the valve handle has turned according to the angle change measured by the angle detection submodule; the direction of opening the valve is positive, when the difference between the valve handle angles before and after measured by the geomagnetic sensor is negative, and the absolute value of the difference is greater than When the valve handle is turned forward, it is determined that position, record the number of full turns plus 1; when the geomagnetic sensor measures the difference between the valve handle angles twice before and after to be a positive number, and the absolute value of the difference is greater than When the valve handle is reversed, it is determined that position, record the number of full turns minus 1; in addition to the above situation, when the difference between the valve handle angles twice measured by the geomagnetic sensor is a positive number, it is determined that the valve handle is rotating forward; when the difference between the valve handle angles twice measured by the geomagnetic sensor is a negative number, it is determined that the valve handle is rotating reversely;

[0012] The valve opening conversion unit converts the valve opening according to the current angle of the valve handle, the number of full turns of the valve handle and the total number of valve turns;

[0013] The geomagnetic sensor can measure the orientation of the geomagnetic sensor according to the change of the angle of the relative geomagnetic field. The valve position monitor equipped with the geomagnetic sensor is installed on the valve handle, and the angle of the valve handle relative to the initial angle can be measured according to the change of the orientation.

[0014] The total angle of the valve handle = S* +θ, S is the number of turns the valve handle has made, and θ is the current angle of the valve handle;

[0015] Current valve opening , T is the total number of turns of the valve handle required to fully open the valve.

[0016] Furthermore, the monitoring cloud platform is provided with:

[0017] An identity verification module is used to verify the identity of the user logging into the WeChat applet and confirm the user's permissions;

[0018] A data storage module, used to store pipeline valve related data, the valve position monitoring data fed back by the valve position monitor installed at each valve on the pipeline through the remote communication module is stored in the data storage module;

[0019] The query module is used for the staff to log in to the monitoring cloud platform to query the valve opening of each valve;

[0020] The WeChat applet includes a cloud platform connection submodule, a Bluetooth connection device configuration submodule, and a calibration submodule;

[0021] The cloud platform connection submodule is used to connect to the monitoring cloud platform, and the staff can access the monitoring cloud platform through the WeChat applet;

[0022] The Bluetooth connection device configuration submodule is used for the staff to configure the device information of the valve position monitor connected to the mobile phone via Bluetooth;

[0023] The calibration submodule is used to calibrate the geomagnetic sensor;

[0024] The calibration submodule includes a calibration process guidance unit and a calibration status prompt unit;

[0025] The calibration process guiding unit is used to guide the staff to perform the calibration operation of the geomagnetic sensor; the calibration status prompting unit is used to prompt the staff that the calibration operation has been completed when the calibration operation of the geomagnetic sensor is completed.

[0026] Furthermore, the calibration submodule further includes a calibration parameter setting unit, the calibration submodule further includes a calibration parameter setting unit, the calibration parameter setting unit can be used to set the total number of valve turns, the current number of valve turns and the current valve opening, and only two of the parameters need to be set to calculate the third parameter;

[0027] Current valve opening * total number of valve turns = current number of valve turns;

[0028] The operation interface of the WeChat applet is provided with a calibration button. Pressing the calibration button pops up a text pop-up window to prompt the calibration process. The calibration process includes:

[0029] Step 1: Set the total number of valve turns;

[0030] Step 2: Turn the valve handle to completely close the valve, set the current valve opening or valve turns to 0, and the calibration submodule records the valve handle angle when it is completely closed as 0 degrees;

[0031] Step 3: Turn the valve handle at least three times, and set the current number of valve turns through the calibration submodule every time the valve handle is turned 0.5 turns during the turning process;

[0032] The angle detection submodule includes: a magnetic field intensity acquisition unit, a signal preprocessing unit and an angle conversion unit;

[0033] The magnetic field intensity acquisition unit is used to acquire the magnetic field intensity changes of the three coordinates xyz sensed by the geomagnetic sensor;

[0034] The signal preprocessing unit is used to filter the original signal collected by the magnetic field strength collection unit to remove the clutter caused by environmental electromagnetic interference, and at the same time amplify and normalize the signal to make the signal stable and within a suitable range;

[0035] The angle conversion unit queries the magnetic field-angle mapping table to obtain the corresponding valve handle rotation angle according to the interval of the magnetic field strength values ​​of the three coordinates xyz measured by the geomagnetic sensor.

[0036] Furthermore, the microcontroller is provided with a data synchronization module, which includes a timing synchronization unit and an update synchronization unit. The timing synchronization unit synchronizes the valve opening measured by the valve opening monitoring module to the monitoring cloud platform through the remote communication module at the same time interval; when the valve opening monitoring module detects a change in the valve opening, the update synchronization unit synchronizes the valve opening to the monitoring cloud platform through the remote communication module.

[0037] Furthermore, the monitoring cloud platform also includes an alarm module, which includes a valve opening change reminder unit. The Bluetooth connection device configuration submodule is provided with an opening change reminder value setting unit. The opening change reminder value setting unit is for authorized staff to set an opening change reminder value. When it is detected that the change of the updated valve opening relative to the previous valve opening exceeds the opening change reminder value set by the staff, the valve opening change reminder unit issues a reminder message for the staff who log in to the monitoring cloud platform to review.

[0038] Furthermore, the microcontroller also includes a power detection module, which detects the remaining battery power of the valve position monitor through a power detection circuit arranged in the valve position monitor. The timing synchronization unit synchronizes the remaining power to the monitoring cloud platform at a regular interval. The warning module is provided with a low power reminder unit. When it is detected that the power is lower than a low power threshold, the low power reminder unit sends a reminder message for the staff who log in to the monitoring cloud platform to review.

[0039] Furthermore, the microcontroller further includes a low power consumption control module, and the low power consumption control module includes a device sleep control unit, a timing awakening unit and a vibration awakening unit;

[0040] When the valve position monitor completes data synchronization with the monitoring cloud platform through the remote communication module and is not connected to the WeChat applet on the mobile phone through Bluetooth for more than 100 seconds, the device sleep control unit controls the geomagnetic sensor, the 4G chip and the Bluetooth chip to enter a sleep state;

[0041] The timed wake-up unit is used to regularly wake up the geomagnetic sensor and the 4G chip, the geomagnetic sensor performs valve position monitoring, and uploads data to the monitoring cloud platform through the 4G chip; each time data is uploaded, the upload time is recorded, and the uploaded data includes the valve number, valve opening, valve opening change start time, valve opening change end time and battery remaining power;

[0042] The vibration awakening unit is used to obtain the detection data of the vibration sensor. When the vibration sensor detects that the amplitude of the vibration generated by the rotation of the valve exceeds the awakening threshold, the low-power control module awakens the geomagnetic sensor and the 4G chip. The geomagnetic sensor continues to monitor the valve position until the vibration sensor can no longer detect the vibration generated by the rotation of the valve, and then uploads data through the 4G chip.

[0043] The wake-up threshold is determined by the average amplitude measured by the vibration sensor during the calibration process of turning the valve handle: wake-up threshold = influence coefficient * average amplitude, 0<influence coefficient<1, the lower the influence coefficient is set, the lower the wake-up threshold, and the easier it is for the low-power control module to wake up the geomagnetic sensor and the 4G chip; the influence coefficient is set to 0.5 by default and can be set on the monitoring cloud platform.

[0044] Furthermore, the low-power control module also includes a vibration interference elimination unit. The vibration sensors are also provided at both ends of the valve. The vibration interference elimination unit can eliminate the interference of valve handle vibration caused by pipeline vibration by comparing the time sequence and vibration amplitude of the vibration signals measured by the three vibration sensors, thereby avoiding increased energy consumption caused by false start-up. When the vibration amplitude measured by the vibration sensor installed on the valve position monitor is greater than the vibration amplitude measured by the vibration sensors at both ends of the valve, and the vibration time measured by the vibration sensor installed on the valve position monitor is earlier than the vibration time measured by the vibration sensors at both ends of the valve, it is judged that the vibration originates from the valve, not the pipeline vibration interference, and the vibration awakening unit wakes up the geomagnetic sensor and the 4G chip.

[0045] Furthermore, the low power consumption control module further includes an acquisition frequency control unit, which adjusts the signal acquisition frequency of the geomagnetic sensor according to the amplitude of the vibration signal measured by the vibration sensor, and when the amplitude of the vibration signal is higher, the signal acquisition frequency of the geomagnetic sensor is higher;

[0046] Signal acquisition frequency = proportional coefficient * amplitude of vibration signal;

[0047] As a verification of the acquisition frequency, the difference between the valve handle rotation angles collected twice before and after is calculated. If the absolute value of the difference exceeds , then the proportional coefficient is multiplied by the absolute value of the difference as the new proportional coefficient for adjusting the signal acquisition frequency.

[0048] A valve position monitor, applied to the above-mentioned valve opening monitoring system, comprises a shell, a circuit board and a rechargeable lithium battery, wherein the circuit board is provided with a microcontroller, a geomagnetic sensor, a 4G chip, a Bluetooth chip and a vibration sensor, the shell comprises a bottom shell, a battery shell, a waterproof top cover and a mounting bracket, the battery shell is arranged on the top of the bottom shell, the battery shell is connected with the bottom shell, the circuit board is arranged in the bottom shell, the rechargeable lithium battery is connected to the power interface on the top of the circuit board, the rechargeable lithium battery is located in the battery shell, and the top of the battery shell is covered with the waterproof top cover; the mounting bracket is connected to one side of the bottom shell, the mounting bracket is provided with a strap notch, and the mounting bracket can be tied and fixed to the valve handle with a strap, and the strap is stuck in the strap notch on the mounting bracket to prevent the strap from sliding; it also includes an external antenna, an antenna interface is provided on one side of the bottom shell, and the external antenna is mounted on the antenna interface.

[0049] The beneficial effects of a valve opening monitoring system of the present invention are as follows: through the coordinated work of the geomagnetic sensor and the valve opening monitoring module, the valve opening is automatically monitored, which reduces the data errors caused by subjective factors in manual recording, provides a more reliable data basis for system operation analysis and decision-making, and effectively avoids system failures or resource waste caused by erroneous data. In addition, since there is no need for staff to spend a lot of time and energy on manual on-site opening information collection and recording, the workload is greatly reduced, labor costs and time costs are saved, and overall work efficiency is improved; real-time data sharing and automatic processing are realized, and the valve opening monitoring data is uploaded to the monitoring cloud platform in a timely manner with the help of the remote communication module, and the data can be stored in real time It is also available for query by relevant personnel, facilitating comprehensive analysis and intelligent regulation by the monitoring center, and enabling quick understanding of changes in valve opening, which effectively promotes efficient management and intelligent operation and maintenance of the entire pipeline system; the low-power control module of the microcontroller can switch between low-power state and operating state according to the operating status of the valve position monitor, while ensuring the normal operation of the valve opening monitoring function, reducing energy consumption and extending the battery life and overall service life of the equipment; the warning module of the monitoring cloud platform is combined with the opening change reminder value setting unit of the WeChat applet on the mobile phone, which can promptly issue reminder information when the valve opening changes abnormally or the power of the valve position monitor is too low, allowing staff to take corresponding measures in time to ensure stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a system architecture diagram of a valve opening monitoring system of the present invention;

[0051] Figure 2 This is a system architecture diagram of a cloud platform for a valve opening monitoring system of the present invention;

[0052] Figure 3 This is a system architecture diagram of a WeChat applet of a valve opening monitoring system of the present invention;

[0053] Figure 4 A system architecture diagram of a valve opening monitoring module of a valve opening monitoring system of the present invention;

[0054] Figure 5 A system architecture diagram of a data synchronization module of a valve opening monitoring system of the present invention;

[0055] Figure 6 A system architecture diagram of a low-power control module of a valve opening monitoring system of the present invention;

[0056] Figure 7 A system architecture diagram of an angle detection submodule of a valve opening monitoring system of the present invention;

[0057] Figure 8 A schematic diagram of the structure of a valve position monitor of the present invention

[0058] Fig. 9 The figure is a cross-sectional view of a valve position monitor according to the present invention.

[0059] Among them, 1-valve position monitor, 11-circuit board, 12-geomagnetic sensor, 13-4G chip, 14-Bluetooth chip, 15-vibration sensor, 16-housing, 161-bottom shell, 162-battery shell, 163-waterproof top cover, 164-mounting bracket, 17-rechargeable lithium battery, 2-monitoring cloud platform, 21-identity authentication module, 22-data storage module, 23-query module, 24-warning module, 241-valve opening change reminder unit, 242-low battery reminder unit, 3-WeChat applet, 31-cloud platform connection submodule, 32-Bluetooth connection device configuration submodule, 321-timing synchronization time interval setting unit, 322-opening change reminder value setting unit, 323-low battery threshold setting unit, 33-calibration submodule, 331-calibration Process guidance unit, 332-calibration status prompt unit, 333-calibration parameter setting unit, 34-inspection submodule, 4-microcontroller, 41-valve opening monitoring module, 411-angle detection submodule, 4111-magnetic field strength acquisition unit, 4112-signal preprocessing unit, 4113-angle conversion unit, 412-circle recording unit, 413-valve opening conversion unit, 42-remote communication module, 43-Bluetooth connection module, 44-data synchronization module, 441-timing synchronization unit, 442-update synchronization unit, 45-power detection module, 46-low power control module, 461-equipment sleep control unit, 462-timing wake-up unit, 463-vibration wake-up unit, 464-vibration interference elimination unit, 465-acquisition frequency control unit. DETAILED DESCRIPTION

[0060] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] like Figure 1-7 As shown, the present invention is a valve opening monitoring system, comprising a valve position monitor 1, a monitoring cloud platform 2 and a mobile phone WeChat applet 3; the valve position monitor 1 is fixed on the valve handle, and the microcontroller 4 of the valve position monitor 1 is provided with a valve opening monitoring module 41, a remote communication module 42 and a Bluetooth connection module 43, wherein:

[0062] The valve opening monitoring module 41 monitors the valve opening through the geomagnetic sensor 12 provided in the valve position monitor 1;

[0063] The remote communication module 42 is connected to the monitoring cloud platform 2 through the 4G chip 13 provided in the valve position monitor 1, and uploads the valve opening monitoring data to the monitoring cloud platform 2;

[0064] The Bluetooth connection module 43 is connected to the WeChat applet 3 of the staff's mobile phone through the Bluetooth chip 14 set in the valve position monitor 1.

[0065] The valve opening monitoring module 41 includes:

[0066] The angle detection submodule 411 detects the current rotation angle of the valve handle at a certain frequency through the geomagnetic sensor 12, and the angle range is arrive The geomagnetic sensor 12 corrects the angle measured when the valve is fully closed to ;

[0067] The circle number recording unit 412 records the number of circles the valve handle has turned according to the angle change measured by the angle detection submodule 411; the direction of opening the valve is positive, when the difference between the valve handle angles before and after measured by the geomagnetic sensor 12 is negative, and the absolute value of the difference is greater than When the valve handle is turned forward, it is determined that position, record the number of full turns plus 1; when the difference between the valve handle angles before and after measured by the geomagnetic sensor 12 is a positive number, and the absolute value of the difference is greater than When the valve handle is reversed, it is determined that position, record the number of full turns minus 1; except for the above situation, when the difference between the valve handle angles measured by the geomagnetic sensor 12 is a positive number, it is determined that the valve handle is rotating forward; when the difference between the valve handle angles measured by the geomagnetic sensor 12 is a negative number, it is determined that the valve handle is rotating reversely;

[0068] The valve opening conversion unit 413 converts the valve opening according to the current angle of the valve handle, the number of full turns of the valve handle and the total number of turns of the valve;

[0069] The geomagnetic sensor 12 can measure the orientation of the geomagnetic sensor 12 according to the change of the relative geomagnetic field angle. The valve position monitor 1 equipped with the geomagnetic sensor 12 is installed on the valve handle, and the angle of the valve handle relative to the initial angle can be measured according to the change of the orientation.

[0070] The total angle of the valve handle = S* +θ, S is the number of turns the valve handle has made, and θ is the current angle of the valve handle;

[0071] Current valve opening , T is the total number of turns of the valve handle required to fully open the valve.

[0072] Furthermore, the monitoring cloud platform 2 is provided with:

[0073] An identity verification module 21 is used to verify the identity of the user logging into the WeChat applet 3 and confirm the user's authority;

[0074] The data storage module 22 is used to store pipeline valve related data. The valve position monitoring data fed back by the valve position monitor 1 installed at each valve on the pipeline through the remote communication module 42 is stored in the data storage module 22;

[0075] The query module 23 is used for the staff to log in to the monitoring cloud platform 2 to query the valve opening of each valve.

[0076] Furthermore, the WeChat applet 3 includes a cloud platform connection submodule 31, a Bluetooth connection device configuration submodule 32, and a calibration submodule 33;

[0077] The cloud platform connection submodule 31 is used to connect to the monitoring cloud platform 2, and the staff can access the monitoring cloud platform 2 through the WeChat applet 3;

[0078] The Bluetooth connection device configuration submodule 32 is used for the staff to configure the device information of the valve position monitor 1 connected to the mobile phone via Bluetooth;

[0079] The calibration submodule 33 is used to calibrate the geomagnetic sensor 12;

[0080] The calibration submodule 33 includes a calibration process guidance unit 331 and a calibration status prompt unit 332;

[0081] The calibration process guidance unit 331 is used to guide the staff to perform the calibration operation of the geomagnetic sensor 12; the calibration status prompting unit 332 is used to prompt the staff that the calibration operation has been completed when the calibration operation of the geomagnetic sensor 12 is completed.

[0082] Multiple valve position monitors 1 can be installed on the valve handle to prevent the failure of a single valve position monitor 1 from affecting valve position monitoring. Different valve position monitors 1 are installed in different positions and directions, and the data detected by the geomagnetic sensors of different valve position monitors 1 are compared and corrected to ensure accuracy.

[0083] Furthermore, the calibration submodule 33 further includes a calibration parameter setting unit 333, which can be used to set the total number of valve turns, the current number of valve turns and the current valve opening, and only two of the parameters need to be set to calculate the third parameter;

[0084] Current valve opening * total number of valve turns = current number of valve turns;

[0085] The operation interface of the WeChat applet is provided with a calibration button. Pressing the calibration button pops up a text pop-up window to prompt the calibration process. The calibration process includes:

[0086] Step 1: Set the total number of valve turns;

[0087] Step 2: Turn the valve handle to completely close the valve, set the current valve opening or valve turns to 0, and the calibration submodule 33 records the valve handle angle when it is completely closed as 0 degrees;

[0088] Turning the valve handle to completely close the valve is for accuracy. If you can confirm the current number of valve turns or valve opening, you can also set it directly;

[0089] Step 3: Turn the valve handle at least three times, and set the current number of valve turns through the calibration submodule 33 every time the valve handle is turned 0.5 times during the turning process;

[0090] During the calibration process, the changes in the magnetic field intensity of the three coordinates xyz monitored by the geomagnetic sensor 12 corresponding to different valve handle rotation angles are recorded to form a magnetic field-angle mapping table; each angle value corresponds to the magnetic field intensity combination of the three coordinates xyz of the magnetic field. Due to the errors caused by the installation angle and vibration, the magnetic field intensity of the three coordinates xyz corresponding to each angle has a variation range, and the variation ranges of the magnetic field intensity at different angles overlap. When the geomagnetic sensor measures three magnetic field intensity components, the magnetic field-angle mapping table is queried to obtain the corresponding valve handle angle;

[0091] The angle detection submodule 411 includes: a magnetic field intensity acquisition unit 4111, a signal preprocessing unit 4112 and an angle conversion unit 4113;

[0092] The magnetic field intensity acquisition unit 4111 is used to acquire the magnetic field intensity changes of the three coordinates xyz sensed by the geomagnetic sensor 12;

[0093] The signal preprocessing unit 4112 is used to filter the original signal collected by the magnetic field strength collection unit 4111 to remove the clutter caused by environmental electromagnetic interference, and at the same time amplify and normalize the signal to make the signal stable and in a suitable range;

[0094] The angle conversion unit 4113 queries the magnetic field-angle mapping table to obtain the corresponding valve handle rotation angle according to the interval of the magnetic field strength values ​​of the three coordinates xyz measured by the geomagnetic sensor 12.

[0095] Furthermore, the microcontroller 4 is provided with a data synchronization module 44, and the data synchronization module 44 includes a timing synchronization unit 441 and an update synchronization unit 442. The timing synchronization unit 441 synchronizes the valve opening measured by the valve opening monitoring module 41 to the monitoring cloud platform 2 through the remote communication module 42 at equal time intervals; when the valve opening monitoring module 41 detects a change in the valve opening, the update synchronization unit 442 synchronizes the valve opening to the monitoring cloud platform 2 through the remote communication module 42.

[0096] Furthermore, the monitoring cloud platform 2 also includes an alarm module 24, the alarm module 24 includes a valve opening change reminder unit 241, the Bluetooth connection device configuration submodule 32 is provided with an opening change reminder value setting unit 322, the opening change reminder value setting unit 322 is for authorized staff to set the opening change reminder value, when it is detected that the change of the updated valve opening relative to the previous valve opening exceeds the opening change reminder value set by the staff, the valve opening change reminder unit 241 issues a reminder message for the staff who log in to the monitoring cloud platform 2 to review.

[0097] Furthermore, the microcontroller 4 also includes a power detection module 115, which detects the remaining battery power of the valve position monitor 1 through a power detection circuit arranged in the valve position monitor 1. The timing synchronization unit 441 synchronizes the remaining power to the monitoring cloud platform 2 while synchronizing the valve opening data. The warning module 24 is provided with a low power reminder unit 242. When it is detected that the power is lower than the low power threshold, the low power reminder unit 242 sends a reminder message for the staff who log in to the monitoring cloud platform 2 to review; the Bluetooth connection device configuration submodule 32 is also provided with a low power threshold setting unit 323, and the low power threshold setting unit 323 is for authorized staff to set the low power threshold.

[0098] Furthermore, the microcontroller 4 further includes a low power consumption control module 46, and the low power consumption control module 46 includes a device sleep control unit 461, a timing awakening unit 462 and a vibration awakening unit 463;

[0099] When the valve position monitor 1 completes data synchronization with the monitoring cloud platform 2 through the remote communication module 42, and the time of not connecting to the WeChat applet of the mobile phone through Bluetooth exceeds 100 seconds, the device sleep control unit 461 controls the geomagnetic sensor 12, the 4G chip 13 and the Bluetooth chip 14 to enter the sleep state;

[0100] The timed wake-up unit 462 is used to regularly wake up the geomagnetic sensor 12 and the 4G chip 13, the geomagnetic sensor 12 performs valve position monitoring, and uploads data to the monitoring cloud platform 2 through the 4G chip 13; each time data is uploaded, the upload time is recorded, and the uploaded data includes the valve number, valve opening, valve opening change start time, valve opening change end time and battery remaining power;

[0101] The vibration awakening unit 463 is used to obtain the detection data of the vibration sensor 15. When the vibration sensor 15 detects that the amplitude of the vibration generated by the rotation of the valve exceeds the awakening threshold, the low power consumption control module 46 awakens the geomagnetic sensor 12 and the 4G chip 13. The geomagnetic sensor 12 continues to monitor the valve position until the vibration sensor 15 can no longer detect the vibration generated by the rotation of the valve, and then uploads data through the 4G chip 13.

[0102] The wake-up threshold is determined by the average amplitude measured by the vibration sensor 15 during the calibration process of turning the valve handle: wake-up threshold = influence coefficient * average amplitude, 0<influence coefficient<1, the lower the influence coefficient is set, the lower the wake-up threshold, and the easier it is for the low-power control module 46 to wake up the geomagnetic sensor 12 and the 4G chip 13; the influence coefficient is set to 0.5 by default and can be set on the monitoring cloud platform 2.

[0103] Record the amplitude recorded by the vibration sensor 15 each time the valve position monitor 1 is awakened by the vibration sensor 15. If no change in valve opening is detected after the geomagnetic sensor 12 is awakened, and the recorded amplitude is less than the average amplitude, it is determined that the awakening threshold is too low and overly sensitive, and is recorded as a high-sensitivity event.

[0104] When a high-sensitivity event occurs, the influence coefficient is adjusted upward, and the specific upward adjustment formula is:

[0105] New impact coefficient = 1-(1-impact coefficient)*adjustment coefficient; 0<adjustment coefficient<1;

[0106] Record the valve opening detected by the geomagnetic sensor 12 each time the valve position monitor 1 is awakened at a scheduled time, subtract the valve opening measured at the last awakening, and obtain the valve opening change value. If the valve opening change value exceeds the opening change reminder value set by the staff, it is judged that the awakening threshold is too high and too low sensitivity, and it is recorded as a low sensitivity event;

[0107] When a hyposensitive event occurs, the influence coefficient is adjusted downward, and the specific downward adjustment formula is:

[0108] New impact coefficient = impact coefficient * adjustment coefficient;

[0109] The default adjustment factor is 0.9 and can be set on the monitoring cloud platform 2;

[0110] When a high-sensitivity event occurs and the influence coefficient is adjusted upward, and then a low-sensitivity event occurs, the adjustment coefficient is adjusted upward and then the influence coefficient is adjusted downward;

[0111] When a low-sensitivity event occurs and the influence coefficient is lowered, and then a high-sensitivity event occurs, the adjustment coefficient is lowered and then the influence coefficient is calculated upward.

[0112] Furthermore, the low power control module 46 also includes a vibration interference elimination unit 464. The vibration sensors 15 are also provided at both ends of the valve. The vibration interference elimination unit 464 can eliminate the interference of the valve handle vibration caused by the pipeline vibration by comparing the time sequence and vibration amplitude of the vibration signals measured by the three vibration sensors 15, thereby avoiding the increase in energy consumption caused by the wrong start-up; when the vibration amplitude measured by the vibration sensor 15 installed on the valve position monitor 1 is greater than the vibration amplitude measured by the vibration sensors 15 at both ends of the valve, and the vibration time measured by the vibration sensor 15 installed on the valve position monitor 1 is earlier than the vibration time measured by the vibration sensors 15 at both ends of the valve, it is judged that the vibration originates from the valve, not the pipeline vibration interference, and the vibration awakening unit 463 wakes up the geomagnetic sensor 12 and the 4G chip 13.

[0113] Furthermore, the low power consumption control module 46 also includes an acquisition frequency control unit 465, which adjusts the signal acquisition frequency of the geomagnetic sensor 12 according to the increase in the vibration signal measured by the vibration sensor 15. When the amplitude of the vibration signal is higher, the signal acquisition frequency of the geomagnetic sensor 12 is higher; the higher the amplitude of the vibration signal measured by the vibration sensor 15, the faster the valve handle rotates. If the signal acquisition frequency is low, the angle change of the valve handle may not be fully identified. For example, the valve handle may rotate quickly, and reverse rotation or speed change may occur between two signal acquisitions. Therefore, it is necessary to increase the signal acquisition frequency to ensure that the angle change of the valve handle is captured and recorded;

[0114] Signal acquisition frequency = proportional coefficient * amplitude of vibration signal;

[0115] As a verification of the acquisition frequency, the difference between the valve handle rotation angles collected twice before and after is calculated. If the absolute value of the difference exceeds , then the proportional coefficient is multiplied by the absolute value of the difference as a new proportional coefficient for adjusting the signal acquisition frequency;

[0116] For example, the initial proportionality factor = 5, and the vibration sensor 15 measures an amplitude of 2 mm;

[0117] At this time, the signal acquisition frequency = 5*2 = 10Hz, that is, 10 detections per second;

[0118] If the valve handle rotation angles measured two times are and , then the absolute value of the difference is , then the new proportionality factor =A*2=10;

[0119] At this time, when the vibration sensor 15 measures an amplitude of 2 mm, the signal acquisition frequency = 10*2 = 20 Hz, that is, 20 detections per second.

[0120] Furthermore, the WeChat applet 3 also includes an inspection submodule 34, and the inspection submodule 34 includes a picture uploading unit, and the picture uploading unit is used for the staff to take pictures of the valve and the valve position monitor 1, and upload the pictures to the monitoring cloud platform 2; the inspection submodule 34 also includes a reliability inspection unit, and a driving device is provided at the valve handle. Each valve has a corresponding number, and valves are randomly selected at regular intervals for reliability inspection. The handle is actively rotated to a fixed angle (the staff rotates it or uses the driving device to drive the valve handle to rotate). The reliability inspection unit checks whether the valve position monitor uploads data in time within the predetermined time. If the data cannot be uploaded to the cloud monitoring platform 2 in time within the predetermined time, it is judged that the equipment has failed and needs to be repaired.

[0121] like Figure 8-9 As shown, a valve position monitor is applied to the above-mentioned valve opening monitoring system, including a housing 16, a circuit board 11 and a rechargeable lithium battery 17. The circuit board 11 is provided with a microcontroller 4, a geomagnetic sensor 12, a 4G chip 13, a Bluetooth chip 14 and a vibration sensor 15. The housing 16 includes a bottom shell 161, a battery shell 162, a waterproof top cover 163 and a mounting bracket 164. The battery shell 162 is arranged on the top of the bottom shell 161, and the battery shell 162 is connected to the bottom shell 161. The circuit board 11 is arranged in the bottom shell 161, and the rechargeable lithium battery 17 is connected to the power interface on the top of the circuit board 11. The rechargeable lithium battery 17 is located in the battery shell 162, and the top of the battery shell 162 is covered with the waterproof top cover 163; the mounting bracket 164 is connected to one side of the bottom shell 161, and the mounting bracket 164 is provided with a strap groove, and the mounting bracket 164 can be tied and fixed on the valve handle with a strap, and the strap is stuck in the strap groove on the mounting bracket 164 to prevent the strap from sliding; it also includes an external antenna, and an antenna interface is provided on one side of the bottom shell 161, and the external antenna is installed in the antenna interface. The external antenna is electrically connected to the 4G chip 13 through the antenna interface for signal enhancement.

[0122] The beneficial effects of a valve opening monitoring system of the present invention are as follows: through the coordinated work of the geomagnetic sensor and the valve opening monitoring module, the valve opening is automatically monitored, which reduces the data errors caused by subjective factors (such as negligence, fatigue, etc.) in manual recording, provides a more reliable data basis for system operation analysis and decision-making, and effectively avoids system failures or resource waste caused by erroneous data. In addition, since there is no need for staff to spend a lot of time and energy on manual on-site opening information collection and recording, the workload is greatly reduced, labor costs and time costs are saved, and overall work efficiency is improved; real-time data sharing and automatic processing are realized, and the valve opening monitoring data is uploaded to the monitoring cloud platform in a timely manner with the help of the remote communication module. The data can be stored in real time and available for query by relevant personnel, which is convenient for monitoring The control center conducts comprehensive analysis and intelligent regulation, which can quickly understand the changes in valve opening, and effectively promote the efficient management and intelligent operation and maintenance of the entire pipeline system; the low-power control module of the microcontroller can flexibly switch between low-power state and operating state according to the operating status of the valve position monitor (such as data synchronization with the monitoring cloud platform, connection status with the mobile phone WeChat applet, etc.), while ensuring the normal operation of the valve opening monitoring function, reducing energy consumption, and extending the battery life and overall service life of the equipment; the warning module of the monitoring cloud platform combined with the opening change reminder value setting unit of the mobile phone WeChat applet can promptly issue reminder information when the valve opening changes abnormally or the power of the valve position monitor is too low, so that the staff can take corresponding measures in time to ensure the stable operation of the system.

[0123] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual content is not limited to this. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. A valve opening monitoring system, characterized in that: The invention comprises a valve position monitor (1), a monitoring cloud platform (2) and a WeChat applet (3); the valve position monitor (1) is fixed on a valve handle, the valve position monitor (1) is provided with a microcontroller (4), the microcontroller (4) is provided with a valve opening monitoring module (41), a remote communication module (42) and a Bluetooth connection module (43), wherein: The valve opening monitoring module (41) monitors the valve opening via a geomagnetic sensor (12) provided in the valve position monitor (1); The remote communication module (42) is connected to the monitoring cloud platform (2) through a 4G chip (13) provided in the valve position monitor (1), and uploads the valve opening monitoring data to the monitoring cloud platform (2); The Bluetooth connection module (43) is connected to the WeChat applet (3) on the staff member's mobile phone via a Bluetooth chip (14) provided in the valve position monitor (1); The valve opening monitoring module (41) comprises: The angle detection submodule (411) detects the current rotation angle of the valve handle at a certain frequency through the geomagnetic sensor (12), and the angle range is arrive The geomagnetic sensor (12) corrects the angle measured when the valve is fully closed to ; The rotation number recording unit (412) records the number of rotations of the valve handle according to the angle change measured by the angle detection submodule (411); taking the valve opening direction as positive, when the difference between the valve handle angles measured by the geomagnetic sensor (12) is a negative number and the absolute value of the difference is greater than When the valve handle is turned forward, it is determined that position, record the number of full turns plus 1; when the difference between the valve handle angles measured by the geomagnetic sensor (12) is a positive number, and the absolute value of the difference is greater than When the valve handle is reversed, it is determined that position, and record the number of full turns minus 1; except for the above situation, when the difference between the valve handle angles measured by the geomagnetic sensor (12) is a positive number, it is determined that the valve handle is rotating forward, and when the difference between the valve handle angles measured by the geomagnetic sensor (12) is a negative number, it is determined that the valve handle is rotating reversely; A valve opening conversion unit (413) converts the valve opening according to the current angle of the valve handle, the number of full turns of the valve handle and the total number of turns of the valve; The geomagnetic sensor (12) can measure the orientation of the geomagnetic sensor (12) according to the change in the angle of the relative geomagnetic field, and the valve position monitor (1) equipped with the geomagnetic sensor (12) is installed on the valve handle, and the angle of the valve handle relative to the initial angle can be measured according to the change in orientation; The total angle of the valve handle = S* +θ, S is the number of turns the valve handle has made, and θ is the current angle of the valve handle; Current valve opening , T is the total number of turns of the valve handle required to fully open the valve; The microcontroller (4) comprises a low power consumption control module (46), the low power consumption control module (46) comprises a collection frequency control unit (465), the collection frequency control unit (465) adjusts the signal collection frequency of the geomagnetic sensor (12) according to the amplitude of the vibration signal measured by the vibration sensor (15) installed on the valve position monitor (1), and when the amplitude of the vibration signal is higher, the signal collection frequency of the geomagnetic sensor (12) is higher; Signal acquisition frequency = proportional coefficient * amplitude of vibration signal; As a verification of the acquisition frequency, the difference between the valve handle rotation angles collected twice before and after is calculated. If the absolute value of the difference exceeds , then the proportional coefficient is multiplied by the absolute value of the difference as the new proportional coefficient for adjusting the signal acquisition frequency.

2. A valve opening monitoring system according to claim 1, characterized in that: The monitoring cloud platform (2) is provided with: An identity verification module (21) is used to verify the identity of the user logging into the WeChat applet (3) and confirm the user's authority; A data storage module (22) for storing pipeline valve-related data, wherein the valve position monitoring data fed back by the valve position monitor (1) installed at each valve on the pipeline through the remote communication module (42) is stored in the data storage module (22); A query module (23) is used for a staff member to log in to the monitoring cloud platform (2) to query the valve opening of each valve; The WeChat applet (3) comprises a cloud platform connection submodule (31), a Bluetooth connection device configuration submodule (32), and a calibration submodule (33); The cloud platform connection submodule (31) is used to connect to the monitoring cloud platform (2), and staff can access the monitoring cloud platform (2) through the WeChat applet (3); The Bluetooth connection device configuration submodule (32) is used for the staff to configure the device information of the valve position monitor (1) connected to the mobile phone via Bluetooth; The calibration submodule (33) is used to calibrate the geomagnetic sensor (12); The calibration submodule (33) comprises a calibration process guidance unit (331) and a calibration status prompting unit (332); The calibration process guidance unit (331) is used to guide the staff in the calibration operation of the geomagnetic sensor (12); and the calibration status prompting unit (332) is used to prompt the staff that the calibration operation has been completed when the calibration operation of the geomagnetic sensor (12) is completed.

3. A valve opening monitoring system according to claim 2, characterized in that: The calibration submodule (33) further comprises a calibration parameter setting unit (333), wherein the calibration parameter setting unit (333) can be used to set the total number of valve turns, the current number of valve turns and the current valve opening, and only two of the parameters need to be set to calculate the third parameter; Current valve opening * total number of valve turns = current number of valve turns; The operation interface of the WeChat applet is provided with a calibration button. Pressing the calibration button pops up a text pop-up window to prompt the calibration process. The calibration process includes: Step 1: Set the total number of valve turns; Step 2: Turn the valve handle to completely close the valve, set the current valve opening or valve turns to 0, and the calibration submodule (33) records the valve handle angle when it is completely closed as 0 degrees; Step 3: Turn the valve handle at least three times, and set the current number of valve turns through the calibration submodule (33) every time the valve handle is turned 0.5 times during the turning process; The angle detection submodule (411) comprises: a magnetic field intensity acquisition unit (4111), a signal preprocessing unit (4112) and an angle conversion unit (4113); The magnetic field intensity acquisition unit (4111) is used to acquire the changes in magnetic field intensity at three coordinates x, y and z sensed by the geomagnetic sensor (12); The signal preprocessing unit (4112) is used to filter the original signal collected by the magnetic field strength collection unit (4111) to remove the clutter caused by environmental electromagnetic interference, and at the same time amplify and normalize the signal to make the signal within a stable and appropriate range; The angle conversion unit (4113) queries the magnetic field-angle mapping table to obtain the corresponding valve handle rotation angle according to the interval of the magnetic field intensity values ​​of the three coordinates xyz measured by the geomagnetic sensor (12).

4. A valve opening monitoring system according to claim 3, characterized in that: The microcontroller (4) is provided with a data synchronization module (44), the data synchronization module (44) comprising a timing synchronization unit (441) and an update synchronization unit (442), the timing synchronization unit (441) synchronizing the valve opening measured by the valve opening monitoring module (41) to the monitoring cloud platform (2) via the remote communication module (42) at equal time intervals, the Bluetooth connection device configuration submodule (32) is provided with a timing synchronization time interval setting unit (321), the timing synchronization time interval setting unit (321) is used by authorized staff to set a time interval for timing synchronization of valve opening data; when the valve opening monitoring module (41) detects a change in the valve opening, the update synchronization unit (442) synchronizes the valve opening to the monitoring cloud platform (2) via the remote communication module (42).

5. A valve opening monitoring system according to claim 4, characterized in that: The monitoring cloud platform (2) further comprises an alarm module (24), wherein the alarm module (24) comprises a valve opening change reminder unit (241), and the Bluetooth connection device configuration submodule (32) is provided with an opening change reminder value setting unit (322), wherein the opening change reminder value setting unit (322) is used by authorized staff to set an opening change reminder value, and when it is detected that the change of the updated valve opening relative to the previous valve opening exceeds the opening change reminder value set by the staff, the valve opening change reminder unit (241) issues a reminder message for the staff who logs into the monitoring cloud platform (2) to review.

6. A valve opening monitoring system according to claim 5, characterized in that: The microcontroller (4) further comprises a power detection module (115), wherein the power detection module (115) detects the remaining battery power of the valve position monitor (1) via a power detection circuit arranged in the valve position monitor (1), and the timing synchronization unit (441) synchronizes the remaining battery power to the monitoring cloud platform (2) at a timing basis, and the warning module (24) is provided with a low power reminder unit (242), and when it is detected that the power level is lower than a low power threshold, the low power reminder unit (242) issues a reminder message for the staff who logs into the monitoring cloud platform (2) to view.

7. A valve opening monitoring system according to claim 5, characterized in that: The low power consumption control module (46) comprises a device sleep control unit (461), a timing awakening unit (462) and a vibration awakening unit (463); When the valve position monitor (1) completes data synchronization with the monitoring cloud platform (2) via the remote communication module (42) and is not connected to the WeChat applet on the mobile phone via Bluetooth for more than 100 seconds, the device sleep control unit (461) controls the geomagnetic sensor (12), the 4G chip (13) and the Bluetooth chip (14) to enter a sleep state; The timed wake-up unit (462) is used to timedly wake up the geomagnetic sensor (12) and the 4G chip (13); the geomagnetic sensor (12) performs valve position monitoring and uploads data to the monitoring cloud platform (2) through the 4G chip (13); each time data is uploaded, the upload time is recorded, and the uploaded data includes the valve number, valve opening, valve opening change start time, valve opening change end time and battery remaining power; The vibration awakening unit (463) is used to obtain detection data of the vibration sensor (15); when the vibration sensor (15) detects that the amplitude of the vibration generated by the rotation of the valve exceeds the awakening threshold, the low power consumption control module (46) awakens the geomagnetic sensor (12) and the 4G chip (13); the geomagnetic sensor (12) continues to monitor the valve position until the vibration sensor (15) can no longer detect the vibration generated by the rotation of the valve, and then uploads data through the 4G chip (13); The wake-up threshold is determined by the average amplitude measured by the vibration sensor (15) during the process of turning the valve handle for calibration: wake-up threshold = influence coefficient * average amplitude, 0<influence coefficient<1, the lower the influence coefficient is set, the lower the wake-up threshold, and the easier it is for the low-power control module (46) to wake up the geomagnetic sensor (12) and the 4G chip (13); the influence coefficient is set to 0.5 by default and can be set on the monitoring cloud platform (2).

8. A valve opening monitoring system according to claim 7, characterized in that: The low power consumption control module (46) further comprises a vibration interference elimination unit (464). The vibration sensors (15) are also provided at both ends of the valve. The vibration interference elimination unit (464) can eliminate the interference of the valve handle vibration caused by the pipeline vibration by comparing the time sequence and the vibration amplitude of the vibration signals measured by the three vibration sensors (15), thereby avoiding the increase of energy consumption caused by the false start. When the vibration amplitude measured by the vibration sensor (15) installed on the valve position monitor (1) is greater than the vibration amplitude measured by the vibration sensors (15) at both ends of the valve, and the vibration time measured by the vibration sensor (15) installed on the valve position monitor (1) is earlier than the vibration time measured by the vibration sensors (15) at both ends of the valve, it is judged that the vibration originates from the valve and is not caused by pipeline vibration interference. The vibration awakening unit (463) awakens the geomagnetic sensor (12) and the 4G chip (13).

9. A valve position monitor, applied to a valve opening monitoring system as claimed in any one of claims 1 to 8, characterized in that: The invention comprises a housing (16), a circuit board (11) and a rechargeable lithium battery (17); the circuit board (11) is provided with the microcontroller (4), a geomagnetic sensor (12), a 4G chip (13), a Bluetooth chip (14) and a vibration sensor (15); the housing (16) comprises a bottom housing (161), a battery housing (162), a waterproof top cover (163) and a mounting bracket (164); the battery housing (162) is arranged on the top of the bottom housing (161); the battery housing (162) is connected to the bottom housing (161); the circuit board (17) is provided with a microcontroller (4), a geomagnetic sensor (12), a 4G chip (13), a Bluetooth chip (14) and a vibration sensor (15); the housing (16) comprises a bottom housing (161), a battery housing (162), a waterproof top cover (163) and a mounting bracket (164); the battery housing (162) is arranged on the top of the bottom housing (161); the battery housing (162) is connected to the bottom housing (161); and the circuit board (17) is provided with a microcontroller (4), a geomagnetic sensor (12), a 4G chip (13), a Bluetooth chip (14) and a vibration sensor (15); 11) is arranged in the bottom shell (161), the rechargeable lithium battery (17) is connected to the power interface on the top of the circuit board (11), the rechargeable lithium battery (17) is located in the battery shell (162), and the top of the battery shell (162) is covered with the waterproof top cover (163); the mounting bracket (164) is connected to one side of the bottom shell (161), and the mounting bracket (164) is provided with a strap notch; and also includes an external antenna, an antenna interface is provided on one side of the bottom shell (161), and the external antenna is installed on the antenna interface.

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