Intelligent well lid monitoring terminal based on CAT1 communication

Abstract

The utility model discloses an intelligent well lid monitoring terminal based on CAT1 communication. The intelligent well lid monitoring terminal comprises a magnetic steel activation device, a shell and a monitoring circuit board arranged in the shell. A microcontroller, a magnetoresistive sensor and a CAT1 communication module are integrated on the monitoring circuit board; the shell is provided with a magnetoresistive sensor activation point, and the magnetic steel activation device is used for activating the magnetoresistive sensor through the magnetoresistive sensor activation point; the microcontroller is used for monitoring the height change of the magnetoresistive sensor so as to start the monitoring unit and obtain well lid state data collected by the monitoring unit. The microcontroller is further used for comparing the well lid state data with a preset threshold value and sending out an alarm signal when the well lid state data exceed the threshold value range. The CAT1 communication module is connected with the microcontroller; the CAT1 communication module is wirelessly connected with the remote monitoring platform; the CAT1 communication module is used for analyzing the well lid state data reported by the microcontroller and transmitting the well lid state data to the remote monitoring platform; and the CAT1 communication module is also used for issuing an instruction issued by the remote monitoring platform.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of well lid monitoring, especially relates to a CAT1 communication based intelligent well lid monitoring terminal. BACKGROUND

[0002] At present, a large number of well lids are distributed in cities, and the quantity is huge and widely distributed. Therefore, with the development of technology, more and more intelligent well lid monitoring terminals are installed on well lids to realize real-time monitoring of well lids and prevent traffic safety hazards caused by abnormal well lids.

[0003] However, the traditional NB-IoT wireless communication technology has small network coverage range and weak underground signal strength, which easily leads to data loss, so that on-site problems cannot be handled in time. UTILITY MODEL CONTENT

[0004] In view of the above problems, the application provides a CAT1 communication based intelligent well lid monitoring terminal, which can solve the problems of small network coverage range of NB-IoT wireless communication technology, weak underground signal strength and data loss.

[0005] To achieve the purpose of the application, the application provides the following technical solutions:

[0006] The application provides a CAT1 communication based intelligent well lid monitoring terminal, which comprises a well lid, a monitoring terminal for monitoring the state of the well lid is installed on the lower side of the well lid, the monitoring terminal comprises a magnetic steel activation device, a shell, a monitoring circuit board arranged in the shell, a microcontroller, a magnetoresistance sensor and a communication unit integrated on the monitoring circuit board, and the microcontroller is connected with the magnetoresistance sensor and the communication unit; The shell is provided with a magnetoresistance sensor activation point, and the magnetic steel activation device is used for activating the magnetoresistance sensor through the magnetoresistance sensor activation point; The outer surface of the shell is provided with a monitoring unit; The monitoring unit is electrically connected with the microcontroller.

[0007] The microcontroller is used for monitoring the high-low flat change of the magnetoresistance sensor to start the monitoring unit and acquire the well lid state data collected by the monitoring unit; The microcontroller is also used for comparing the well lid state data with a preset threshold value, and sending an alarm signal when the well lid state data exceeds the threshold value range.

[0008] The communication unit includes a CAT1 communication module; the CAT1 communication module is connected with the microcontroller; the CAT1 communication module is wirelessly connected with a remote monitoring platform; the CAT1 communication module is used for analyzing well lid state data reported by the microcontroller and transmitting the well lid state data to the remote monitoring platform; the remote monitoring platform is connected with an alarm device, the remote monitoring platform is wirelessly connected with a communication device, and the CAT1 communication module is further used for receiving the alarm signal and sending the alarm signal to the remote monitoring platform; the remote monitoring platform controls the alarm device to alarm and transmits the alarm signal to the communication device of a worker, so that the worker can timely handle problems; the CAT1 communication module is further used for issuing instructions issued by the remote monitoring platform; and the power supply unit is used for supplying power to each power consumption unit.

[0009] In a possible implementation manner, the monitoring unit includes a gas sensor, a water immersion sensor and a liquid level sensor; the liquid level sensor, the water immersion sensor and the gas sensor are connected with the microcontroller; the gas sensor is installed on the outer surface of the shell and protrudes outward; the liquid level sensor and the water immersion sensor are both installed outside the shell and are wiredly connected with the shell.

[0010] In a possible implementation manner, the monitoring unit further includes an inclination sensor, the inclination sensor is integrated on the monitoring circuit board, the inclination sensor is connected with the microcontroller and is used for monitoring the inclination angle of the well lid.

[0011] In a possible implementation manner, the monitoring circuit board further integrates a signal processing device, the signal processing device is used for controlling the signal sending and receiving of the CAT1 communication module.

[0012] In a possible implementation manner, the power supply unit includes a general power supply unit and a module power supply unit; the module power supply unit is connected with the CAT1 communication module and supplies power to the CAT1 communication module; and the general power supply unit supplies power to other power consumption units of the monitoring terminal.

[0013] In a possible implementation manner, the monitoring circuit board further integrates a battery voltage acquisition unit, the battery voltage acquisition unit is connected with the microcontroller, is used for monitoring state data of a battery and transmitting the state data of the battery to the microcontroller; and the microcontroller is used for comparing the state data of the battery with a preset threshold value and issuing an alarm signal when the state data of the battery exceeds the threshold value range.

[0014] In a possible implementation manner, the terminal further includes a FLASH unit, the FLASH unit is connected with the microcontroller and is used for storing basic information of the monitoring terminal, and the basic information includes a well lid installation time, a unique identification number and IP port information.

[0015] In a possible implementation, the terminal further comprises a DEBUG interface and a serial port; the DEBUG interface is used for programming and debugging of the monitoring terminal program; and the serial port is used for viewing and monitoring basic information of the terminal during debugging of the product.

[0016] In a possible implementation, the terminal monitoring terminal is provided with a mounting hole on the terminal shell, a bolt passes through the mounting hole and a corresponding mounting hole on the manhole cover, and is fastened by a nut, so as to realize fixed connection of the manhole cover and the monitoring terminal.

[0017] In a possible implementation, the terminal monitoring terminal is connected with the manhole cover through a mounting bracket, the mounting bracket is an L-shaped bracket, the L-shaped bracket comprises a horizontal portion and a vertical portion, mounting holes are distributed on the vertical portion, a bolt passes through the mounting holes on the vertical portion and corresponding mounting holes on the manhole cover, and is fastened by a nut, so as to realize fixed connection of the manhole cover and the mounting bracket, mounting holes are also distributed on the horizontal portion, the monitoring terminal is provided with mounting holes, a bolt passes through the mounting holes on the horizontal portion and corresponding mounting holes on the shell of the monitoring terminal, and is fastened by a nut, so as to realize fixed connection of the monitoring terminal and the mounting bracket.

[0018] Beneficial effects:

[0019] By using the CAT1 communication module, the intelligent manhole cover monitoring terminal based on CAT1 communication provided in the application provides stable and wide-coverage communication connection, ensures real-time transmission of monitoring data and high responsiveness of the monitoring terminal. By automatically comparing data with a preset threshold value through the microcontroller, an abnormal state can be quickly identified and an alarm can be triggered, so as to prevent traffic accidents and safety hazards caused by abnormal manhole covers in time. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the application and constitute a part of the specification, which together with the embodiments of the application are used to explain the application and do not constitute a limitation on the application;

[0021] Figure 1 A mounting schematic diagram of the monitoring terminal on the manhole cover is provided for the embodiments of the application;

[0022] Figure 2 A schematic diagram of the overall structure of the monitoring terminal is provided for the embodiments of the application;

[0023] Figure 3 A schematic diagram of the interaction of each module of the monitoring terminal is provided for the embodiments of the application;

[0024] Figure 4 Another mounting schematic diagram of the monitoring terminal on the manhole cover is provided for the embodiments of the application;

[0025] Figure 5 The schematic view of the L-shaped support provided in the embodiments of the present application.

[0026] In the figure:

[0027] 1, manhole cover; 11, lower manhole cover; 12, upper manhole cover; 13, nut; 14, bolt; 2, monitoring terminal; 3, shell; 4, monitoring circuit board; 41, microcontroller; 42, magnetoresistance sensor; 43, CAT1 communication module; 44-1, module power supply unit; 44-2, general power supply unit; 45-1, water immersion sensor; 45-2, liquid level sensor; 45-3, gas sensor; 45-4, inclination sensor; 46-1, communication antenna; 46-2, SIM card; 47, battery voltage acquisition unit; 5, L-shaped support; 51, vertical part; 52, horizontal part; 53, mounting hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0030] The inventor of the present utility model finds that, with the development of technology, more and more intelligent manhole cover monitoring terminals are installed on manhole covers to realize real-time monitoring of the manhole covers, thereby effectively preventing traffic safety hazards caused by manhole cover abnormalities. However, due to the limited network coverage range and weak underground signal strength of the traditional NB-IoT wireless communication technology, data loss is easily caused, and thus on-site problems cannot be handled in time. Based on this, in the embodiments of the present utility model provided by the inventor, by integrating a CAT1 communication module on the monitoring terminal, the problems of small network coverage range, weak underground signal and data loss existing in the NB-IoT wireless communication technology are solved.

[0031] Figures 1-5The application provides an intelligent well lid monitoring terminal based on CAT1 communication, which comprises a well lid 1, a monitoring terminal 2 for monitoring the state of the well lid 1 installed on the lower side of the well lid 1, a magnetic steel activation device, a shell 3, a monitoring circuit board 4 arranged in the shell 3; the monitoring circuit board 4 is integrated with a microcontroller 41 and a magnetoresistance sensor 42 and a communication unit connected with the microcontroller 41; the shell 3 is provided with a magnetoresistance sensor 42 activation point, and the magnetic steel activation device is used for activating the magnetoresistance sensor 42 through the magnetoresistance sensor 42 activation point; the shell 3 is provided with a monitoring unit on the outer surface; the monitoring unit is electrically connected with the microcontroller 41.

[0032] The microcontroller 41 is used for monitoring the high-low level change of the magnetoresistance sensor 42, so as to start the monitoring unit and acquire the well lid state data collected by the monitoring unit; the microcontroller 41 is also used for comparing the well lid state data with a preset threshold value, and sending an alarm signal when the well lid state data exceeds the threshold value range;

[0033] The communication unit comprises a CAT1 communication module 43; the CAT1 communication module 43 is connected with the microcontroller 41; the CAT1 communication module 43 is wirelessly connected with a remote monitoring platform; the CAT1 communication module 43 is used for analyzing the well lid state data reported by the microcontroller 41 and transmitting the well lid state data to the remote monitoring platform; the remote monitoring platform is connected with an alarm device, and the remote monitoring platform is wirelessly connected with a communication device; the CAT1 communication module 43 is also used for receiving the alarm signal and sending the alarm signal to the remote monitoring platform; the remote monitoring platform controls the alarm device to alarm and transmits the alarm signal to the communication device of a staff, so that the staff can timely deal with the problem; the CAT1 communication module 43 is also used for issuing an instruction issued by the remote monitoring platform; and a power supply unit is used for supplying power to each power consumption unit.

[0034] In the application, the monitoring terminal 2 is not activated when it is shipped, and the microcontroller 41, the monitoring unit and the communication unit are in a deep sleep state. In order to facilitate the staff to easily activate the monitoring terminal 2, the activation point of the magnetoresistance sensor 42 is specially arranged on the shell. The magnetoresistance sensor 42 as the starting unit of the monitoring terminal 2 outputs a high level signal to the microcontroller 41 when it is shipped. After the magnetic steel activation device is attached to the activation point of the magnetoresistance sensor 42 for 3-5 seconds, the magnetoresistance sensor 42 outputs a low level signal to the microcontroller 41. The microcontroller 41 is started after sensing the high-low level change, and then the microcontroller 41 starts the communication unit, the monitoring unit and the like to control the normal work of the whole monitoring terminal 2.

[0035] The monitoring unit transmits the state data of the monitored well lid to the microcontroller 41, the microcontroller 41 transmits the data to the CAT1 communication module 43, the CAT1 communication module 43 receives and analyzes the data and transmits the data to the remote monitoring platform, so that the staff can check the real-time state of the well lid 1.

[0036] The microcontroller 41 is preset with a threshold value of the cover state. After the monitoring unit transmits the cover state data monitored by the monitoring unit to the microcontroller 41, the microcontroller 41 compares the cover state data with the preset threshold value, and sends an alarm signal when the cover state data exceeds the threshold value. The microcontroller 41 transmits the alarm signal to the CAT1 communication module 43 in time, and the CAT1 communication module 43 sends the alarm signal to the remote monitoring platform; the remote monitoring platform controls the alarm device to alarm, and transmits the alarm signal to the communication device of the staff for the staff to handle the problem in time.

[0037] In order to facilitate the management and adjustment of the monitoring terminal 2, the basic information of the monitoring terminal 2 is usually set on the terminal, such as the reporting period of the monitoring terminal 2, the IP port information, however, these basic information is not immutable, which needs to be changed with the use of the cover 1. For example, the initial reporting period of a certain monitoring terminal 2 is 1 day once, but since the cover 1 is located in a place with large flow of people, in order to ensure safety, the staff needs to modify the reporting period to 1 day twice according to the actual situation. At this time, the staff can directly issue a modification instruction on the remote monitoring platform, and the CAT1 communication module 43 will issue the instruction to the microcontroller 41, and the microcontroller 41 will modify the reporting period of the monitoring terminal 2.

[0038] By adopting the above technical scheme, by adopting the CAT1 communication module 43, a stable and wide-coverage communication connection is provided, ensuring real-time transmission of monitoring data and high responsiveness of the monitoring terminal 2. By automatically comparing the data with the preset threshold value by the microcontroller 41, the abnormal state can be quickly identified and the alarm can be triggered, and the traffic accidents and safety hazards caused by the abnormal cover 1 can be prevented in time. In addition, the magnetic resistance sensor 42 is simple to activate and has high reliability, and also avoids false triggering of activation and causes the battery to be consumed in advance, thereby prolonging the service life of the cover monitoring terminal 2.

[0039] In a possible implementation, the monitoring unit includes a gas sensor 45-3, a water immersion sensor 45-1, and a liquid level sensor 45-2; the liquid level sensor 45-2, the water immersion sensor 45-1, and the gas sensor 45-3 are connected to the microcontroller 41; the gas sensor 45-3 is installed on the outer surface of the shell 3 and protrudes outward; the liquid level sensor 45-2 and the water immersion sensor 45-1 are both installed outside the shell 3 and are wired connected to the shell 3.

[0040] By adopting the above technical scheme, the gas sensor 45-3 includes harmful gas and combustible gas, which is used to monitor the gas concentration value in the well, and the liquid level sensor 45-2 and the water level sensor are used to monitor whether the water level in the well is out of limit.

[0041] In a possible implementation, the monitoring unit further comprises an inclination sensor 45-4 integrated on the monitoring circuit board 4, which is connected to the microcontroller 41 and used to monitor the inclination angle of the manhole cover 1.

[0042] By adopting the above technical solution, the inclination sensor 45-4 has acceleration and angular acceleration detection capabilities, and effectively links information through the CAT1 communication module 43 technology, so as to better monitor the position and inclination state of the manhole cover 1 in real time. When the position and inclination state of the manhole cover 1 are higher than a certain threshold, the microprocessor sends an alarm signal to the CAT1 communication module 43, and the CAT1 communication module 43 reports the data to the remote monitoring platform.

[0043] In a possible implementation, the monitoring circuit board 4 further integrates a signal processing device used to control the signal sending and receiving of the CAT1 communication module 43. The signal processing device adopts, for example, a SIM card 46-2 or a communication antenna 46-1.

[0044] By adopting the above technical solution, the high-quality communication antenna 46-1 or the SIM card 46-2 is used to ensure stable connection with the cellular network, reduce communication interruption and signal attenuation, and ensure real-time transmission of monitoring data.

[0045] In a possible implementation, the power supply unit comprises a general power supply unit 44-2 and a module power supply unit 44-1. The module power supply unit 44-1 is connected to the CAT1 communication module 43 to supply power to the CAT1 communication module 43. The general power supply unit 44-2 supplies power to other power-consuming units of the monitoring terminal 2.

[0046] By adopting the above technical solution, the CAT1 communication module 43 uses an independent power supply unit, which makes power management more flexible and can improve the service life of the CAT1 communication module 43.

[0047] In a possible implementation, the monitoring circuit board 4 further integrates a battery voltage acquisition unit 47 connected to the microcontroller 41, which is used to monitor the state data of the battery and transmit it to the microcontroller 41. The microcontroller 41 is used to compare the battery state data with a preset threshold value and send an alarm signal when the battery state data exceeds the threshold value.

[0048] By adopting the above technical solution, the battery voltage acquisition unit 47 is used to monitor the battery voltage level and temperature in real time, so as to ensure normal operation of the device when the battery has sufficient power and timely find the problem of insufficient battery power.

[0049] In a possible implementation, the terminal further comprises a FLASH unit connected with the microcontroller 41, for storing basic information of the monitoring terminal 2, including: manhole cover installation time, heartbeat period, unique identification number, IP port information.

[0050] By adopting the above technical solution, the FLASH unit can long-term save the key basic information, which is still intact even after power failure, monitoring terminal 2 failure or system restart, ensuring the data persistence and reliability of the monitoring terminal 2.

[0051] In a possible implementation, the terminal further comprises a DEBUG interface and a serial port; the DEBUG interface is used for programming and debugging of the monitoring terminal 2 program; and the serial port is used for viewing and monitoring the basic information of the monitoring terminal 2 when debugging the product.

[0052] By adopting the above technical solution, the DEBUG interface allows the developer to conveniently program and debug the program during the device development and testing stage, improving the development efficiency. The serial port interface can be used to view and monitor the basic information of the monitoring terminal 2, such as running status and error log, when the production personnel debug the product, assisting remote diagnosis and troubleshooting, and reducing the frequency and cost of on-site maintenance.

[0053] As a possible implementation, the terminal monitoring terminal 2 is provided with a mounting hole 53, a bolt 14 passes through the mounting hole 53 and a corresponding mounting hole 53 on the manhole cover 1, and is fastened by a nut 13, so as to realize the fixed connection of the manhole cover 1 and the monitoring terminal 2.

[0054] In the embodiment of the application, as shown in Figure 1 , it is a kind of installation mode of monitoring terminal 2 in double-layer manhole cover, double-layer manhole cover is divided into upper and lower two layers, upper layer is pressure-bearing layer, lower layer is protective layer, the bottom structure of upper layer manhole cover 12 is special, not suitable for installation, and the distance between upper layer and lower layer manhole cover 11 is small, therefore, the monitoring terminal 2 can only be installed on the lower side of lower layer manhole cover 11.Installation also needs to punch a hole on the lower side of lower layer manhole cover 11, the hole size and distance need to be consistent with the mounting hole 53 of the monitoring terminal 2.

[0055] After punching, first, the bolt 14 with the matched spring washer and washer is passed through the corresponding mounting hole 53 of the lower layer manhole cover 11 and the monitoring terminal 2, then the flat washer and spring washer are installed, the nut 13 is pre-tightened by hand, and then the corresponding bolt 14 nut 13 is tightened by using cross screwdriver and wrench, so that the monitoring terminal 2 can be fixed on the lower layer manhole cover 11.

[0056] By adopting the above technical scheme, the bolt 14 and the nut 13 are used for fixed connection, the installation process is simple and clear, and the installation time and labor cost are reduced. Through the design of the pre-set installation hole 53, the manhole cover 1 of different specifications and shapes can be adapted, and the versatility and adaptability of the monitoring terminal 2 are enhanced.

[0057] As a feasible implementation manner, the terminal monitoring terminal 2 is connected with the manhole cover 1 through the installation bracket, and the installation bracket is an L-shaped bracket 5. The L-shaped bracket 5 includes a horizontal portion 52 and a vertical portion 51. The vertical portion 51 is distributed with installation holes 53. The bolt 14 passes through the installation hole 53 of the vertical portion 51 and the corresponding installation hole 53 on the manhole cover 1, and is fastened through the nut 13, so as to realize the fixed connection of the manhole cover 1 and the installation bracket. The horizontal portion 52 is also distributed with installation holes 53, and the monitoring terminal 2 is provided with installation holes 53. The bolt 14 passes through the installation hole 53 of the horizontal portion 52 and the corresponding installation hole 53 on the shell 3 of the monitoring terminal 2, and is fastened through the nut 13, so as to realize the fixed connection of the monitoring terminal 2 and the installation bracket.

[0058] In the embodiment of the application, as shown in Figures 4-5 , it is a kind of installation mode of monitoring terminal 2 in rainwater nodular cast iron material manhole cover. The rainwater well cover material is nodular cast iron, and the inner center part of the manhole cover 1 is hexagonal. The monitoring terminal 2 is installed on the L-shaped bracket 5, and the L-shaped bracket 5 is installed on any one side of the center hexagonal of the manhole cover 1.

[0059] In order to facilitate the installation of the monitoring terminal 2 on the manhole cover 1, the horizontal portion 52 of the L-shaped bracket 5 is installed on the monitoring terminal 2 when it is shipped. When installed on site, only the bracket needs to be fixed with the manhole cover 1. When installing, the manhole cover 1 needs to be punched according to the installation hole 53 of the L-shaped bracket 5. After punching, the bolt 14 with a spring washer and a flat washer is passed through the corresponding installation holes 53 of the manhole cover 1 and the installation bracket in the order shown in Figure 5 , the thread glue is applied at the nut 13 pre-tightening position point of each bolt 14, the nut 13 is pre-tightened by hand, the pre-installed monitoring terminal 2 surface on the installation bracket is adjusted to be basically parallel to the surface of the manhole cover 1, and then the corresponding bolt 14 nut 13 is tightened by using a wrench to fix the installation bracket and the manhole cover 1.

[0060] By adopting the above technical scheme, due to the design of the installation bracket, the complex installation environment of the manhole cover 1 around the existence of obstacles or space limitation can be adapted, and the application range of the monitoring terminal 2 is expanded. The design of the L-shaped bracket 5 provides additional support, enhances the stability of the monitoring terminal 2 on the manhole cover 1, and is especially suitable for areas with heavy traffic, which can effectively resist vehicle crushing and environmental vibration.

[0061] Working principle: the monitoring terminal 2 provided by the embodiment of the application is activated by the magnetic steel activation device, after activation, the micro control starts other units to start the monitoring terminal 2. After the monitoring terminal 2 is started, it enters the working mode, and the monitoring unit starts to collect and report data.

[0062] The gas sensor 45-3 monitors the downhole gas concentration value, the liquid level sensor 45-2 and the water level sensor monitor whether the downhole water level is out of limit, and the inclination sensor 45-4 monitors the position and inclination state of the well lid 1. Each sensor sends the collected data to the microcontroller 41, the microcontroller 41 compares the data with the preset threshold value, and when it is found that the threshold value is exceeded, an alarm signal is sent to the CAT1 communication module 43, the CAT1 communication module 43 forwards the signal to the remote monitoring platform, the remote monitoring platform controls the alarm device to alarm, and the alarm signal is transmitted to the communication device of the worker, so that the worker can timely handle the problem.

[0063] In addition, when the microcontroller 41 does not find that the data collected by each sensor exceeds the threshold value, it will also report the data to the remote monitoring platform through the CAT1 communication module 43 for the worker to check the real-time state of the well lid 1.

[0064] In addition, in order to facilitate the management and adjustment of the monitoring terminal 2, the CAT1 communication module 43 supports the instructions issued by the remote monitoring platform to be issued to the microcontroller 41, and the microcontroller 41 modifies the parameters of the monitoring terminal 2.

[0065] In several embodiments provided by the present application, it should be understood that the disclosed system, modules and methods can be implemented in other ways. For example, the above-described module embodiments are only schematic, for example, the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed mutual units can be indirect coupling or communication connection through some interfaces, modules or units, and can be electrical, mechanical or other forms.

[0066] The above embodiments are only used to illustrate the technical solutions of the present application, not to limit them. The present application is not limited to the exact structure described above and shown in the drawings, and the specific implementation of the present application should not be limited to the above description. For ordinary skilled persons in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be considered as falling within the scope of protection of the present application.

Claims

1. A smart manhole cover monitoring terminal based on CAT1 communication, characterized in that, The device includes a manhole cover, on the underside of which a monitoring terminal for monitoring the manhole cover's status is installed. The monitoring terminal includes a magnetoresistive activation device, a housing, and a monitoring circuit board disposed within the housing. The monitoring circuit board integrates a microcontroller, a magnetoresistive sensor connected to the microcontroller, and a communication unit. The housing has a magnetoresistive sensor activation point, and the magnetoresistive activation device is used to activate the magnetoresistive sensor through the activation point. A monitoring unit is disposed on the outer surface of the housing, and the monitoring unit is electrically connected to the microcontroller. The microcontroller is used to monitor the height and level changes of the magnetoresistive sensor to activate the monitoring unit and acquire the manhole cover status data collected by the monitoring unit; the microcontroller is also used to compare the manhole cover status data with a preset threshold and issue an alarm signal when it exceeds the threshold range; The communication unit includes a CAT1 communication module; the CAT1 communication module is connected to the microcontroller; the CAT1 communication module is wirelessly connected to the remote monitoring platform; the CAT1 communication module is used to parse the manhole cover status data reported by the microcontroller and transmit it to the remote monitoring platform; the remote monitoring platform is connected to an alarm device and wirelessly connected to a communication device; the CAT1 communication module is also used to receive the alarm signal and send it to the remote monitoring platform; the remote monitoring platform controls the alarm device to sound an alarm and transmits the alarm signal to the staff's communication device for timely problem handling; the CAT1 communication module is also used to issue instructions issued by the remote monitoring platform. The power supply unit is used to supply power to various power-consuming units, and the power supply unit includes a general power supply unit and a modular power supply unit.

2. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The monitoring unit includes a gas sensor, a water immersion sensor, and a liquid level sensor; The liquid level sensor, water immersion sensor, and gas sensor are all connected to the microcontroller; the gas sensor is mounted on the outer surface of the housing and protrudes outward; the liquid level sensor and water immersion sensor are both mounted outside the housing and are wired to the housing.

3. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The monitoring unit also includes a tilt sensor, which is integrated on the monitoring circuit board and connected to the microcontroller for monitoring the tilt angle of the manhole cover.

4. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The monitoring circuit board also integrates a signal processing device, which is used to control the signal transmission and reception of the CAT1 communication module.

5. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The module power supply unit is connected to the CAT1 communication module and supplies power to the CAT1 communication module; The general power supply unit supplies power to other power-consuming units of the monitoring terminal.

6. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The monitoring circuit board also integrates a battery voltage acquisition unit, which is connected to the microcontroller and is used to monitor the battery status data and transmit it to the microcontroller. The microcontroller is used to compare the battery status data with a preset threshold, and to issue an alarm signal when the data exceeds the threshold range.

7. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The terminal also includes a FLASH unit, which is connected to the microcontroller and is used to store the basic information of the monitoring terminal, including: manhole cover installation time, unique identification number, and IP port information.

8. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 7, characterized in that, The terminal also includes a DEBUG interface and a serial port; the DEBUG interface is used for burning and debugging the monitoring terminal program; the serial port is used to view and monitor the basic information of the terminal when debugging the product.

9. The intelligent manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The terminal monitoring terminal has mounting holes on its outer shell. Bolts pass through the mounting holes and the corresponding mounting holes on the manhole cover, and are tightened with nuts to achieve a fixed connection between the manhole cover and the monitoring terminal.

10. A smart manhole cover monitoring terminal based on CAT1 communication according to claim 1, characterized in that, The terminal monitoring terminal is connected to the manhole cover via a mounting bracket, which is an L-shaped bracket; the L-shaped bracket includes a horizontal part and a vertical part. The vertical section has mounting holes distributed on it. Bolts pass through the mounting holes on the vertical section and the corresponding mounting holes on the manhole cover, and are tightened with nuts to achieve a fixed connection between the manhole cover and the mounting bracket. Mounting holes are also distributed on the horizontal section, and mounting holes are provided on the monitoring terminal; bolts pass through the mounting holes on the horizontal section and the corresponding mounting holes on the housing of the monitoring terminal, and are tightened by nuts to achieve a fixed connection between the monitoring terminal and the mounting bracket.

Images