CN118089843A - Intelligent well lid monitoring device and method - Google Patents

Abstract

The application relates to the technical field of well lid monitoring, and discloses an intelligent well lid monitoring device and method, wherein the intelligent well lid monitoring device comprises a shielding bearing piece, double-row arc-shaped wound conductive wires are arranged in the shielding bearing piece, conductive balls electrically connected with the conductive wires are connected between the double-row conductive wires in a rolling manner, or conductive sliding pieces electrically connected with the conductive wires are connected between the double-row conductive wires in a sliding manner; the two ends of the double-row conductive wire, which are positioned on the same side of the conductive ball or the conductive sliding piece, are electrically connected to the control module, and the two ends of the other side are empty; the periphery side of electrically conductive line is provided with the arc wire, and arc wire electricity is connected to control module, still is provided with the magnetic flux sensor of electricity connection to control module in the shielding carrier for detect the magnetic flux in the arc wire. The application has the advantages of reducing external magnetic interference, adopting double-dimensional data monitoring and improving the monitoring accuracy of the well lid state.

Description

Intelligent well lid monitoring device and method

Technical Field

The application relates to the technical field of well lid monitoring, in particular to an intelligent well lid monitoring device and method.

Background

In municipal facilities, well lid state monitoring is very important to the normal operation and maintenance of urban drainage, sewage treatment, underground pipeline etc. fields. In the actual use process, when a vehicle passes through the well cover, the well cover can vibrate or deviate or even pop up the well mouth, so that the well cover state monitoring device ensures that the well cover is positioned at the correct position; through the real-time monitoring of the well lid state, various abnormal conditions can be timely found and processed, the occurrence of safety accidents is reduced, and the life and property safety of people is guaranteed. For example, a cable well is a specially laid channel of underground cable, typically located one at regular intervals (e.g., 80 meters). The cable is mainly used for facilitating the laying, overhauling and maintenance of the cable. Within the cable well, there is typically a cover plate to protect the cables and other equipment within the well. In order to ensure safety, a safety monitoring device is generally arranged on a cable well or other well cover.

At present, a common well lid monitoring method is to judge the opening and closing state of the well lid by using a pressure sensor, and to measure the opening angle of the well lid by using an inclination sensor to monitor the related state, such as normal opening, maintenance or abnormal opening, loss or damage. Or using vibration sensor to monitor vibration signal generated when the underground equipment or machine is operated, and judging its operation state and fault condition.

However, in the practical application process, because the inclination sensor is an acceleration sensor based on the inertia principle, the inclination angle is obtained by measuring the included angle between the gravity acceleration and the sensitive axis of the sensor, and because the abnormal movement of the well lid is instantaneous, vibration is generated, and the generated inclination is also smaller; the common inclination angle sensor is limited by the selected materials and the measurement range, the response speed is low, errors exist in detection, and the accuracy of the monitoring result is easily affected. The vibration sensor is mainly used for measuring vibration signals, but not directly measuring angle inclination, and angle inclination information is required to be indirectly obtained through a certain algorithm and a data processing technology, so that more errors are easy to exist.

Disclosure of Invention

In order to improve the accuracy of well lid state monitoring, the application provides an intelligent well lid monitoring device.

The application provides an intelligent well lid monitoring device, which adopts the following technical scheme:

An intelligent well lid monitoring device comprises a shielding bearing piece, wherein double rows of arc-shaped wound conductive wires are arranged in the shielding bearing piece, conductive balls electrically connected with the conductive wires are connected between the double rows of the conductive wires in a rolling manner, or conductive sliding pieces electrically connected with the conductive wires are connected between the double rows of the conductive wires in a sliding manner; the two ends of the double rows of conductive wires, which are positioned on the same side of the conductive ball or the conductive sliding piece, are electrically connected to the control module, and the two ends of the other side are idle; an arc-shaped wire is arranged on the outer peripheral side of the conductive wire, the arc-shaped wire is electrically connected to the control module, and a magnetic flux sensor electrically connected to the control module is also arranged in the shielding bearing piece and used for detecting magnetic flux in the arc-shaped wire;

acquiring a resistance value R1 of a conductive wire connected to the control module in real time;

acquiring a numerical value phi 1 of magnetic flux in real time;

calculating first state data of the current well lid according to a first algorithm according to the change trend of the resistance value and the change trend of the magnetic flux;

A first algorithm: first state data= { a1×sqrt [ (1/N) ×Σ (R1-R2) ²]}/R2+{a2×sqrt[(1/N)×∑(φ1-φ2)² ] }/Φ2;

wherein R2 is a resistance value corresponding to a normal state of the well lid, phi 2 is magnetic flux corresponding to the normal state of the well lid, a1 and a2 are adjustment parameters, and N is the resistance value and the number of samples corresponding to the magnetic flux.

By adopting the technical scheme, when the well lid is inclined, the change of the conductive wire access control resistance is brought by the position change of the conductive ball or the conductive sliding piece, so that the inclination angle of the corresponding well lid is detected, and whether the well lid is at a normal position is judged; even the well lid translation is gone out, can bring the vibrations of well lid owing to the translation back, the process of vibrations can make conductive ball or conductive slider's position to bring resistance data's change, bring the area electric current on the conductor promptly and change, and then can bring the change of conducting upper magnetic field, thereby realize the monitoring of magnetic flux in the arc wire through arc wire bonding magnetic flux sensor, and then be favorable to guaranteeing the accuracy of the monitoring data of the unusual removal of well lid, in addition, still reduce external environment's magnetic interference through shielding carrier, with the accuracy of the monitoring data of further assurance well lid unusual removal. Calculating corresponding discrete degrees according to the trend of the change of the access resistance value, so as to monitor the degree of deviation of the data measured in real time from a normal state; meanwhile, by combining the change trend of the magnetic flux, the state parameters of the well lid are comprehensively calculated according to the discrete degree of the magnetic flux, so that the state of the well lid can be conveniently judged, and therefore, double data monitoring is beneficial to improving the monitoring accuracy of the state of the well lid.

Optionally, a plurality of concave parts are arranged on the conductive wire, and the conductive balls are in surface contact with the concave parts.

Through adopting above-mentioned technical scheme, adopt the mode of face contact to carry out electric connection, be favorable to improving the stability that conductive ball electricity connected, be difficult to produce the electric spark at the rolling in-process of conductive ball, and be favorable to improving signal transmission's stability.

Optionally, the double rows of conductive wires are obliquely arranged according to a set angle.

Through adopting above-mentioned technical scheme, the conductive wire that the slope set up helps making conductive ball or conductive slider under the normal condition be located the position of settlement to be favorable to detecting the resistance value under the normal condition, and then when taking place the well lid slope, can detect the state of well lid more easily through conductive ball or conductive slider's position change, thereby be favorable to improving the accuracy of well lid state monitoring.

Optionally, one or more double-row arc-shaped wound conductive wires are arranged in the shielding bearing piece, and when a plurality of conductive wires exist, the inclination angles of the conductive wires are different.

Through adopting above-mentioned technical scheme, set up the electric wire that a plurality of inclination are different in the one carrier, can realize the detection of resistance on the electric wire of a plurality of dimensions to be favorable to realizing the accurate detection to well lid inclination more.

Optionally, one or more shielding bearings are arranged corresponding to the manhole cover to be monitored, and the shielding bearings are arranged in the center of the manhole cover or eccentrically; when a plurality of the shield carriers are provided, the inclination angles of the conductive wires within the plurality of shield carriers are different.

By adopting the technical scheme, the central setting is favorable for adapting to the state of the well lid and simplifying the calculation method; the eccentric arrangement is beneficial to increasing the inclination angle of the conductive ball when the well lid is inclined, so that the judgment accuracy is increased; in addition, be provided with a plurality of shielding bearing members, and the inclination of corresponding electric wire is different to can synthesize the data in a plurality of shielding bearing members, reduce the interference that brings when the inclination of well lid and electric wire is the same, consequently, be favorable to further improving the degree of accuracy of data.

Optionally, a limiting groove is arranged on the inner wall of the shielding bearing piece at a position corresponding to the displacement path of the conductive ball or the conductive sliding piece.

Through adopting above-mentioned technical scheme, spacing recess is favorable to restricting conductive ball or conductive sliding part's position to make conductive ball or conductive sliding part be difficult to drop from the conducting wire, thereby be favorable to improving the accuracy of monitoring result.

Optionally, a distance sensor is arranged at a position, close to the well ring, of the peripheral side of the well cover, and the distance sensor is electrically connected to the control module; and acquiring the values of the distance sensors in real time, calculating first value dispersion of the plurality of distance sensors in a set time period, and calculating second state data according to the first value dispersion, wherein the second state data=b1×the first state data+b2×the first value dispersion+b3, and b1, b2 and b3 are adjustment parameters.

Through adopting above-mentioned technical scheme, through being provided with distance sensor to detect the distance of well lid week side distance well ring, thereby be favorable to further detecting whether the well lid is in the position of normal state, thereby be favorable to further guaranteeing the accuracy of well lid state monitoring.

Optionally, a plurality of pressure sensors are arranged between the periphery of the well cover and the well ring, and the pressure sensors are electrically connected to the control module; and acquiring the values of the pressure sensors in real time, calculating second value dispersions of the pressure sensors in a set time period, and calculating third state data according to the second value dispersions, wherein the third state data=c1×the first state data+c2×the second value dispersions+c3, and c1, c2 and c3 are adjustment parameters.

Through adopting above-mentioned technical scheme, through being provided with pressure sensor to detect the pressure size of well lid week side distance well ring, thereby be favorable to further detecting whether the well lid is in the position of normal state, thereby be favorable to further guaranteeing the accuracy of well lid state monitoring.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The first dimension monitoring of the inclination degree of the well lid is realized through the rolling position of the conductive ball or the conductive sliding piece on the conductive wire, and then the magnetic flux is monitored through the change of the magnetic flux caused by the change of the current on the conductive wire, so that the data monitoring of the second dimension is realized, and the accuracy of the well lid state judgment is ensured;

2. the accuracy of monitoring the well lid state is improved by arranging one or more shielding bearing pieces in a central arrangement or an eccentric arrangement and different inclination degrees of the conducting wires when the shielding bearing pieces are arranged;

3. The accuracy of well lid state judgment is further improved through the pressure sensor or the distance sensor, so that more accurate monitoring is facilitated.

Drawings

Fig. 1 is an application diagram of an intelligent manhole cover monitoring device.

Fig. 2 is a schematic diagram of an internal structure of a shielding bearing member of the intelligent well lid monitoring device, and a displacement structure is a conductive ball.

Fig. 3 is a schematic view of an internal structure of a shielding carrier, and a displacement structure is a conductive sliding member.

FIG. 4 is an installation diagram of an intelligent well lid monitoring device in the center of a well lid.

Fig. 5 is an exploded view of the intelligent well lid monitoring device in the center of the well lid for displaying the limiting groove.

Fig. 6 is a cross-sectional view of an intelligent well lid monitoring device level setting, mainly used for showing spacing recess.

Fig. 7 is a cross-sectional view of an intelligent manhole cover monitoring device with a plurality of double rows of conductive wires disposed within a shield carrier.

Fig. 8 is a schematic structural view of an intelligent well lid monitoring device, mainly used for showing a concave portion.

Fig. 9 is a cross-sectional view of the intelligent well lid monitoring device set up obliquely, mainly used demonstrates spacing recess.

Fig. 10 is an installation diagram of the intelligent well lid monitoring device eccentric to the well lid.

Fig. 11 is a schematic diagram of an intelligent manhole cover monitoring apparatus provided with a plurality of.

Fig. 12 is a cross-sectional view of an intelligent manhole cover monitoring device provided with a plurality of intelligent manhole cover monitoring devices, and different inclination angles.

Fig. 13 is a schematic diagram of a structure in which a distance sensor is added to an intelligent well lid monitoring device.

Fig. 14 is a schematic structural diagram of an intelligent well lid monitoring device with a pressure sensor.

Reference numerals: 1. a well cover; 2. a well ring; 3. a shield carrier; 4. a conductive wire; 5. a conductive ball; 6. an arc-shaped wire; 7. a control module; 8. a limit groove; 9. a magnetic flux sensor; 10. a distance sensor; 11. a pressure sensor; 12. a conductive slider; 13. a concave portion.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The embodiment of the application discloses an intelligent well lid monitoring device.

Referring to fig. 1 and 2, an intelligent manhole cover monitoring apparatus includes a shielding carrier 3 disposed inside a manhole cover 1. The shielding bearing piece 3 is internally provided with double rows of arc-shaped wound conducting wires 4, and the conducting wires 4 are wound in a nearly circular shape. The double-row conductive wires 4 are arranged at equal intervals, and conductive balls 5 electrically connected with the conductive wires 4 are connected between the double-row conductive wires 4 in a rolling way. The two ends of the double-row conductive wire 4, which are positioned on the same side of the conductive ball 5, are electrically connected to the control module 7, and the two ends of the other side are empty, so that the conductive ball 5 is positioned at different positions on the conductive wire 4, and is connected with different resistance values of the control module 7, and then the current on the conductive wire 4 is changed. The shielding bearing part 3 is internally provided with an arc-shaped wire 6, the outer periphery side of the conductive wire 4 is integrally annular, two ends of the arc-shaped wire 6 are electrically connected to the control module 7, and the shielding bearing part 3 is internally provided with a magnetic flux sensor 9 electrically connected to the control module 7 and used for detecting magnetic flux in the arc-shaped wire 6. Because when current flows in the arcuate conductor 6, a magnetic field is generated around the arcuate conductor 6 and thus a magnetic flux is generated according to ampere's loop law. The magnetic flux sensor 9 may measure the magnetic flux and convert the measurement into an electrical signal for further processing or reading by the control module 7.

Referring to fig. 3, in other embodiments, the conductive balls 5 may be replaced by conductive sliders 12, where the conductive sliders 12 are arc-shaped sliders, and arc-shaped grooves that conform to the arc-shaped winding shape of the conductive wires 4 are provided on the arc-shaped sliders, so that the conductive sliders 12 slide and are electrically connected to the conductive wires 4. When the well lid 1 is inclined, the conductive sliding piece 12 slides along the conductive wire 4, so that the resistance value of the conductive wire 4 connected with the control module 7 is changed, and the current on the conductive wire 4 is changed. In this embodiment, the double row conductive wire 4 is made of a hard conductive material, and the conductive ball 5 or the conductive slider 12 is also made of a hard conductive material.

Referring to fig. 4, the shielding carrier 3 is integrally in a shape of a truncated cone or a truncated pyramid, and the shielding carrier 3 is made of a metal material with a magnetic shielding function, has a shielding effect, and reduces electromagnetic interference of external electromagnetic signals to the magnetic flux sensor 9, thereby being beneficial to ensuring the accuracy of magnetic flux monitoring.

The control module 7 is an electronic device or a circuit board, and is used for processing, controlling or converting current or signals, and may include various electronic components, such as a microprocessor, an amplifier, a switch, etc.

Referring to fig. 5, the conductive balls 5 are located between the double rows of conductive wires 4, and corresponding limit grooves 8 are provided on the inner wall of the inner side of the shield carrier 3 at positions corresponding to the displacement paths of the conductive balls 5 or the conductive slider 12. The whole limit groove 8 is a C-shaped arc groove, and the cross section of the limit groove is also an arc groove which is suitable for the conductive ball 5 or the conductive sliding piece 12 and is used for limiting the position of the conductive ball 5 or the conductive sliding piece 12 so as to ensure the displacement stability of the conductive ball 5 or the conductive sliding piece 12. In other embodiments, the limiting groove 8 may also be an arc limiting rod which is wound with the arc of the conductive wire 4, and the conductive ball 5 or the conductive sliding piece 12 is arranged between the arc limiting rod and the double rows of conductive wires 4; and limiting the conductive balls 5 or the conductive sliding parts 12 by using an arc limiting rod and double rows of conductive wires 4. In this embodiment, the arc-shaped stop lever is non-conductive and made of hard material, and the arc-shaped stop lever may be provided with a plurality of.

In addition, in order to ensure the stability of the initial position of the conductive ball 5 or the conductive slider 12 and the accuracy of data monitoring, the double-row conductive wire 4 of a nearly circular ring shape is inclined according to a set angle.

Referring to fig. 6, in an inclined embodiment, a double row of conductive wires 4 is provided in the shield carrier 3, and the double row of conductive wires 4 is disposed parallel to the manhole cover 1. The well lid 1 is generally horizontal, and the double-row conductive wires 4 are also horizontal. The initial state of the conductive ball 5 or the conductive sliding piece 12 can be arranged in the middle of the conductive wire 4, when the well lid 1 moves, the conductive ball 5 or the conductive sliding piece 12 can displace under the influence of the gravitational force, so that the resistance value of the conductive wire 4 connected with the control module 7 is changed, and the current on the conductive wire 4 is further changed; while affecting the magnetic flux in the arcuate conductor 6.

Referring to fig. 7, in another embodiment of the inclination angle, a plurality of double rows of conductive wires 4 are provided in the shield carrier 3; the present embodiment is shown by taking two double rows of conductive wires 4 as an example, and the intersecting angle of the two double rows of conductive wires 4 is 90 degrees. When the well lid 1 is inclined, the displacement of the conductive ball 5 or the conductive sliding piece 12 can be monitored from multiple dimensions, so that the corresponding resistance value is changed, and the inclination angle of the well lid 1 can be sensed. Wherein, the double conducting wires 4 of vertical setting, one of them can be the level setting, and another one is vertical setting, is favorable to simplifying the calculation. When a plurality of double rows of conductive wires 4 exist, the corresponding relative inclination angle is 180 degrees/n, and n is the number of the double rows of conductive wires 4.

In the application, due to the rolling of the conductive balls 5, the length of the conductive wire 4 is also changed, so that the current on the conductive wire 4 is changed, and the magnetic field around the conductive wire 4 is changed, and electromagnetic waves with different frequencies can be generated by the conductive part of the conductive wire 4 in the shielding bearing piece 3 along with the change of different speeds and different positions of the conductive balls 5. Thus, the conductive wire 4 itself can be regarded as a signal generator; the non-conductive empty end of the conductive wire 4 can be used as a transmitting antenna; so that the length of the transmitting antenna itself varies with the displacement position and displacement speed of the conductive balls 5, and the wavelength of the emitted electromagnetic wave is also different, i.e., the frequency is also different. When the resistance on the conductive wire 4 is larger, the transmitting antenna is shorter, and the frequency at the moment can be determined according to the speed of the conductive ball 5; thus different positions; and the corresponding optimal transmit antenna 4 lengths are different for signals of different frequencies. The application monitors other abnormal states such as vibration or inclination, so that the transmitting antenna transmits electromagnetic waves, and the length of the transmitting antenna is changed, so that the transmitting signal of the corresponding optimal frequency on the antenna is changed. According to the application, different data discrete degrees can be calculated aiming at signals corresponding to different frequencies at different resistance values, so that the state of the well lid 1 is detected. For example, although there is a relatively rapid frequency of vibration, it is not required to perform maintenance only because the vehicle is traveling.

Therefore, since the speed of the conductive ball 5 changing on the conductive wire 4 is also a parameter, i.e. the speed of the conductive ball 5 rolling, the speed corresponds to the speed of the current change, i.e. the frequency of the change of the signal, so as to obtain a plurality of signals with components of different frequencies. The speed of change of the conductive balls 5 is also different from the corresponding dispersion, so that the frequency of the signal can be indirectly reflected through the dispersion.

The arc-shaped conducting wire 6 at the periphery not only serves as a coil for sensing the change of magnetic flux, but also serves as a receiving antenna, so that signals of components with different frequencies can be received, and then transmitted to the control module 7, and the discrete degree of the magnetic flux is correspondingly calculated. Thus, the dispersion may be embodied as a calculation of the amount of filtering of the corresponding waveform of the signal.

The principle of utilization is as follows: faraday's law of electromagnetic induction, when a magnetic field changes, an electromotive force is generated in a conductor, thereby generating a current. The magnitude of this electromotive force is proportional to the rate of change of the magnetic flux. Therefore, the higher the frequency of the electromagnetic wave, the faster the rate of change of the magnetic flux, and the larger the electromotive force and current generated. When the frequency of electromagnetic waves increases, the rate of change of the magnetic field increases, resulting in an increase in the rate of change of magnetic flux. This increases the electromotive force and current in the conductor, thereby affecting the effect of electromagnetic induction. The frequency of electromagnetic waves also affects the distribution and stability of the magnetic flux. The magnetic field generated by the high-frequency electromagnetic wave changes rapidly, which may cause the difference of magnetic flux between different positions to increase, thereby affecting the stability and efficiency of electromagnetic induction.

Referring to fig. 8, the conductive wire 4 is provided with a plurality of recesses 13, and the conductive balls 5 are in surface contact with the recesses 13. The electric connection is carried out in a surface contact mode, so that the stability of electric connection of the conductive ball 5 is improved, electric sparks are not easy to generate in the rolling process of the conductive ball 5, and the stability of signal transmission is improved.

Referring to fig. 9, in another embodiment of the inclination angle, the double-row conductive wires 4 are arranged obliquely, and the middle part of the conductive wires 4 is the end with lower height, and the end of the access control module 7 and the empty load is the end with higher height; the conductive line 4 is preferably inclined at an angle of 5-10 deg.. When the well lid 1 is in abnormal movement, the conductive balls 5 or the conductive sliding parts 12 can move, so that the resistance value is increased or decreased, and the monitoring is facilitated. Likewise, the limit groove 8 of the shielding bearing piece 3, which is close to the inner wall of the conductive wire 4, is parallel to the double-row conductive wire 4, so as to ensure that the limit groove 8 fits with the actual use requirement. The conductive wire 4 that the slope set up helps making conductive ball 5 or conductive slider 12 under the normal condition be located the position that sets for to be favorable to detecting the resistance value under the normal condition, and then when taking place well lid 1 slope, can detect well lid 1's state through conductive ball 5 or conductive slider 12's position change more easily, thereby be favorable to improving well lid 1 state monitoring's accuracy.

Referring to fig. 10 and 11, for the number of shield carriers 3, the shield carriers 3 are provided with one or more corresponding manhole covers 1 to be monitored. Furthermore, for the positional setting of the shielding carrier 3, the shielding carrier 3 is arranged centrally or eccentrically in the manhole cover 1. The central arrangement is beneficial to adapting to the state of the well lid 1 and simplifying the calculation method. The shielding bearing piece 3 is eccentrically arranged relative to the well cover 1, so that when the well cover 1 is inclined, the inclination displacement degree of the conductive balls 5 or the conductive sliding pieces 12 is increased, and the judgment accuracy is improved.

Referring to fig. 11 and 12, wherein the present embodiment is illustrated by taking 2 centrally symmetrical shield carriers 3 as an example when a plurality of shield carriers 3 are provided. Preferably, three shielding bearing pieces 3 are adopted, the three shielding bearing pieces 3 are distributed in a central symmetry mode, and the inclination angle of the well lid 1 can be perceived from multiple dimensions; so that the inclination angle of the manhole cover 1 is judged according to the data of the resistor. In addition, in order to further improve the accuracy of the data, the inclination angles of the conductive wires 4 within the plurality of shield carriers 3 are different. In this embodiment, the lower end of the conductive wire 4 is disposed near the periphery of the well lid 1. The plurality of shielding bearing pieces 3 are arranged, and the inclination angles of the corresponding conductive wires 4 are different, so that the data in the plurality of shielding bearing pieces 3 can be comprehensively calculated, and errors caused by no displacement of the conductive balls 5 or the conductive sliding pieces 12 when the inclination angles of the well cover 1 and the inclination angles of the conductive wires 4 are the same are reduced.

Referring to fig. 13, in order to further ensure the accuracy of monitoring the state of the manhole cover 1, a distance sensor 10 is added; a plurality of distance sensors 10 are arranged at equal intervals on the circumferential side of the well lid 1 close to the well ring 2, and the distance sensors 10 are electrically connected to the control module 7. By being provided with the distance sensor 10 to detect the distance of the well lid 1 circumference side from the well ring 2, thereby facilitating further detection of whether the well lid 1 is in the position of the normal state. When the manhole cover 1 is in a normal state, the value of the distance sensor 10 is maintained within a stable range. However, when the manhole cover 1 is vibrated, illegally opened, or other abnormality occurs, these changes may cause a minute variation in the distance between the manhole cover 1 and the manhole ring 2, thereby being captured by the distance sensor 10.

Referring to fig. 14, in order to further ensure the accuracy of monitoring the state of the well lid 1, a pressure sensor 11 is added; a plurality of pressure sensors 11 are arranged between the periphery of the well cover 1 and the well ring 2 at equal intervals, and the pressure sensors 11 are electrically connected to the control module 7. The pressure sensor 11 is arranged to detect the pressure of the periphery of the well cover 1 from the well ring 2, so that the well cover 1 can be further detected in a normal state. When the well lid 1 is in a normal state, the value of the pressure sensor 11 is kept within a stable range. However, when the manhole cover 1 is vibrated, illegally opened, or other abnormality occurs, these changes may cause a minute variation in the distance between the manhole cover 1 and the manhole ring 2, thereby being caught by the pressure sensor 11.

The implementation principle of the intelligent well lid monitoring device provided by the embodiment of the application is as follows: when the well lid 1 is inclined, the change of the resistance of the conductive wire 4 connected with the control module 7 is brought by the position change of the conductive ball 5 or the conductive sliding piece 12, so that the inclination angle of the corresponding well lid 1 is detected, and whether the well lid 1 is at a normal position is judged; even the well lid 1 translates away, can bring the vibrations of well lid 1 owing to the translation back, the process of vibrations can make conductive ball 5 or conductive slider 12's position to bring the change of the resistance data of access control module 7, bring the area electric current on the electric wire 4 promptly and change, and then can bring the change of magnetic field on electrically conducting, thereby combine magnetic flux sensor 9 through arc wire 6, realize the monitoring to the magnetic flux in the arc wire 6, and then be favorable to guaranteeing the accuracy of the monitoring data of the unusual removal of well lid 1.

The embodiment of the application discloses an intelligent well lid monitoring method.

An intelligent well lid monitoring method based on any one of the intelligent well lid monitoring devices comprises the following steps:

Based on the resistance value R1 of the conductive wire 4 of the access control module 7 acquired in real time; when the well lid 1 is vibrated to fly out or inclined or other abnormal states, the resistance value R1 of the conductive wire 4 connected to the control module 7 changes according to the sliding position of the conductive ball 5 on the conductive wire 4.

Acquiring a numerical value phi 1 of magnetic flux in real time; the acquisition method may be obtained by the magnetic flux sensor 9, and acquires the value of the magnetic flux generated on the arc-shaped wire 6 disposed on the peripheral side of the conductive wire 4.

According to the change trend of the resistance value and the change trend of the magnetic flux, calculating first state data of the current well lid 1 in a set time period according to a first algorithm; the set time may be 1 hour, or half an hour; for example, 10 data are collected per time period;

The first algorithm comprises: first state data= { a1×sqrt [ (1/N) ×Σ (R1-R2) ²]}/R2+{a2×sqrt[(1/N)×∑(φ1-φ2)² ] }/Φ2;

Wherein R2 is a resistance value corresponding to the normal state of the well lid 1, phi 2 is magnetic flux corresponding to the normal state of the well lid 1, a1 and a2 are adjustment parameters, and N is the resistance value and the number of samples corresponding to the magnetic flux.

By monitoring the change of the resistance and the magnetic flux of the well cover 1 in an abnormal state, the problems of the well cover 1, such as whether the well cover 1 is loose, whether a person or a vehicle passes through or not, and the like, can be timely found, so that corresponding measures are taken to ensure the safety of pedestrians and vehicles.

In order to further ensure the accuracy of monitoring the state data of the well lid 1, the steps further comprise: acquiring the value of the distance sensor 10 in real time, and calculating a set time period, wherein the set time can be 1 hour or half hour; for example, 10 data are collected per time period; a first numerical spread of the plurality of distance sensors 10 is calculated, the first numerical spread being a sum of the spread of the plurality of distance sensors 10. And calculating second state data according to the first numerical value dispersion, wherein the second state data=b1×the first state data+b2×the first numerical value dispersion+b3, and b1, b2 and b3 are adjustment parameters. By calculating the data of the distance sensor 10, the degree of dispersion corresponding to the distance data is calculated. When the manhole cover 1 is in a normal state, the value of the distance sensor 10 is maintained within a stable range. However, when the manhole cover 1 is vibrated, illegally opened, or other abnormality occurs, these changes may cause a minute variation in the distance between the manhole cover 1 and the manhole ring 2, thereby being captured by the distance sensor 10. The resistance, the magnetic flux and the data of the distance sensor 10 are integrated by the integrated evaluation algorithm to obtain a second state data representing the current state of the manhole cover 1. In the specific judging step, a threshold judging mode can be adopted to judge whether the current state data exceeds a threshold range, so that measures are taken for inspection or maintenance.

In order to further ensure the accuracy of monitoring the state data of the well lid 1, the steps further comprise: acquiring the value of the pressure sensor 11 in real time, and calculating a set time period, wherein the set time can be 1 hour or half hour; for example, 10 data are collected per time period; a second numerical dispersion of the plurality of pressure sensors 11 is calculated, the second numerical dispersion being a sum of the dispersions of the plurality of pressure sensors 11. Third state data is calculated from the second value dispersion, the third state data=c1×first state data+c2×second value dispersion+c3, wherein c1, c2 and c3 are adjustment parameters. By calculating the data of the pressure sensor 11, the degree of dispersion corresponding to the pressure data is calculated. When the well lid 1 is in a normal state, the value of the pressure sensor 11 is kept within a stable range. However, when the manhole cover 1 is vibrated, illegally opened, or other abnormality occurs, these changes may cause a minute variation in the distance between the manhole cover 1 and the manhole ring 2, thereby being caught by the pressure sensor 11. The resistance, the magnetic flux and the data of the pressure sensor 11 are integrated by the integrated evaluation algorithm to obtain a third state data representing the current state of the manhole cover 1. In the specific judging step, a threshold judging mode can be adopted to judge whether the current state data exceeds a threshold range, so that measures are taken for inspection or maintenance.

The above-mentioned resistance value, magnetic flux, value of the distance sensor 10, value of the pressure sensor 11, and first, second and third state data are all recorded and stored in the memory module, so that subsequent analysis and fault prediction are facilitated, to help improve performance and accuracy of the monitoring system.

The implementation principle of the intelligent well lid monitoring method provided by the embodiment of the application is as follows: when the well lid 1 tilts or abnormally vibrates, the change of the resistance of the conductive wire 4 connected with the control module 7 is brought by the position change of the conductive ball 5 or the conductive sliding piece 12, so that the tilting angle of the corresponding well lid 1 is detected, and whether the well lid 1 is at a normal position is judged; even if the well lid 1 translates out, the vibration of the well lid 1 can be brought after the translation, the vibration process can enable the position of the conductive ball 5 or the conductive sliding piece 12, so that the change of the resistance data of the access control module 7 is brought, namely the change of the belt current on the conductive wire 4 is brought, and the change of the magnetic field on the conductive wire can be brought, so that the magnetic flux sensor 9 is combined through the arc-shaped wire 6. According to the trend of the variation of the access resistance value, the corresponding discrete degree is calculated, and the degree of deviation of the data measured in real time from the normal state is monitored; meanwhile, by combining the change trend of the magnetic flux, the state parameter of the well lid 1 is finally and comprehensively calculated according to the discrete degree of the magnetic flux, so that the state of the well lid 1 is convenient to judge, and therefore, the double data monitoring is realized, the function of shielding external magnetic induction lines is realized, and the monitoring accuracy of the state of the well lid 1 is improved.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. The intelligent well lid monitoring device is characterized by comprising a shielding bearing piece (3), wherein double rows of arc-shaped wound conductive wires (4) are arranged in the shielding bearing piece (3), conductive balls (5) electrically connected with the conductive wires (4) are connected between the double rows of arc-shaped wound conductive wires (4) in a rolling manner, or conductive sliding pieces (12) electrically connected with the conductive wires (4) are connected between the double rows of arc-shaped conductive wires (4) in a sliding manner; the two ends of the double rows of conductive wires (4) positioned on the same side of the conductive balls (5) or the conductive sliding parts (12) are electrically connected to the control module (7), and the two ends of the other side are idle; an arc-shaped wire (6) is arranged on the outer periphery side of the conductive wire (4), the arc-shaped wire (6) is electrically connected to the control module (7), and a magnetic flux sensor (9) electrically connected to the control module (7) is also arranged in the shielding bearing piece (3) and used for detecting magnetic flux in the arc-shaped wire (6);

acquiring a resistance value R1 of a conductive wire (4) connected to a control module (7) in real time;

acquiring a numerical value phi 1 of magnetic flux in real time;

According to the change trend of the resistance value and the change trend of the magnetic flux, calculating first state data of the current well lid (1) according to a first algorithm;

A first algorithm: first state data= { a1×sqrt [ (1/N) ×Σ (R1-R2) ²]}/R2+{a2×sqrt[(1/N)×∑(φ1-φ2)² ] }/Φ2;

R2 is a resistance value corresponding to the normal state of the well lid (1), phi 2 is magnetic flux corresponding to the normal state of the well lid (1), a1 and a2 are adjustment parameters, and N is the resistance value and the number of samples corresponding to the magnetic flux.

2. The intelligent well lid monitoring device according to claim 1, wherein a plurality of concave portions (13) are arranged on the conductive wire (4), and the conductive balls (5) are in surface contact with the concave portions (13).

3. The intelligent well lid monitoring device according to claim 1, wherein the double rows of conductive wires (4) are arranged obliquely according to a set angle.

4. A well lid monitoring device according to claim 3, characterized in that one or more double-row arc-shaped wound conductive wires (4) are arranged in the shielding bearing piece (3), and when a plurality of conductive wires (4) exist, the inclination angles of the conductive wires (4) are different.

5. The intelligent well lid monitoring device according to claim 4, wherein one or more shielding bearings (3) are arranged corresponding to the well lid (1) to be monitored, and the shielding bearings (3) are arranged at the center of the well lid (1) or eccentrically; when a plurality of the shield carriers (3) are provided, the inclination angles of the conductive wires (4) within the plurality of shield carriers (3) are different.

6. The intelligent well lid monitoring device according to claim 5, wherein a limit groove (8) is arranged at a position of the inner wall of the shielding bearing piece (3) corresponding to the displacement path of the conductive ball (5) or the conductive sliding piece (12).

7. The intelligent well lid monitoring device according to claim 5, characterized in that a distance sensor (10) is arranged on the periphery of the well lid (1) close to the well ring (2), and the distance sensor (10) is electrically connected to the control module (7); the method comprises the steps of acquiring values of the distance sensors (10) in real time, calculating first value dispersions of the plurality of distance sensors (10) in a set time period, and calculating second state data according to the first value dispersions, wherein the second state data = b1×first state data + b2×first value dispersions + b3, and b1, b2 and b3 are adjustment parameters.

8. The intelligent well lid monitoring device according to claim 5, characterized in that a plurality of pressure sensors (11) are arranged between the periphery of the well lid (1) and the well ring (2), the pressure sensors (11) being electrically connected to the control module (7); the method comprises the steps of acquiring values of the pressure sensors (11) in real time, calculating second value dispersions of the pressure sensors (11) in a set time period, and calculating third state data according to the second value dispersions, wherein the third state data=c1×the first state data+c2×the second value dispersions+c3, and c1, c2 and c3 are adjustment parameters.