CN111179557A - Manhole cover remote monitoring system based on NB-IOT and sensor terminal - Google Patents
Manhole cover remote monitoring system based on NB-IOT and sensor terminal Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 101
- 238000004891 communication Methods 0.000 claims abstract description 8
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- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
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Abstract
The invention provides a manhole cover remote monitoring system based on NB-IOT and a sensor terminal. Sensor terminal is used for well lid remote monitering system, this system include cloud monitoring platform, removal supervision terminal APP, sensor terminal: a micro control unit, a wireless communication module, an inclination angle sensor for monitoring the inclination angle of the well lid in real time and a GPS positioning module for monitoring the real-time position of the well lid in real time are integrated in the sensor terminal; the cloud monitoring platform is used for correspondingly analyzing the well lid state of each well lid based on the data monitored by each sensor terminal, and sending corresponding alarm information of the corresponding well lid to the APP when the well lid state is that the well lid is normally closed and the well lid is inclined, when the well lid state is that the well lid is abnormally opened, and when the well lid state is that the well lid is forgotten to be closed; and the system is also used for loading the real-time position of the corresponding well lid on the GIS map after the APP sends alarm information. The manhole cover monitoring device is used for increasing monitoring force on the manhole cover so as to reduce potential safety hazards.
Description
Technical Field
The invention relates to the field of well lid monitoring, in particular to a well lid remote monitoring system based on NB-IOT and a sensor terminal.
Background
With the further acceleration of the urbanization process, municipal utility construction is rapidly developing. The municipal administration, electric power, communication and other departments have a large amount of municipal equipment and assets to be managed, and the well cover becomes a non-negligible item.
However, in the actual use process, the well lid is easy to have the following conditions due to the lack of an effective monitoring and management means: (1) the well lid is uncapped and is forgotten to be closed after uncapping. (2) The well lid tilts due to rolling of the vehicle. (3) The well lid is lost. In addition, for the manhole cover which does not have the three situations, the following situations are easy to occur: and can be damaged by long-term maintenance.
Once the above situation occurs, it often causes great harm to vehicles and pedestrians on the road, and has great negative impact on social stability and safety. Therefore, the invention provides a manhole cover remote monitoring system based on NB-IOT and a sensor terminal, which are used for solving the problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a manhole cover remote monitoring system based on NB-IOT and a sensor terminal, which are used for increasing the monitoring strength of a manhole cover so as to master the state of the manhole cover in time and reduce potential safety hazards.
In a first aspect, the invention provides a manhole cover remote monitoring system based on NB-IOT, which comprises a cloud monitoring platform, a mobile supervision terminal APP used for being installed on a smart phone, and a plurality of sensor terminals used for being installed on the inner side wall of a manhole cover to be monitored in a one-to-one manner; wherein:
each sensor terminal is internally integrated with a micro control unit, an NB-IOT wireless communication module connected with the micro control unit, an inclination angle sensor for monitoring the inclination angle of the well lid in real time and a GPS positioning module for monitoring the real-time position of the well lid provided with the sensor terminal in real time;
the cloud monitoring platform is connected with each sensor terminal and a mobile supervision terminal APP installed on a smart phone through a wireless network, is used for acquiring data monitored by each sensor terminal in real time, correspondingly analyzing and storing the well lid state of each well lid through the acquired data in real time, and respectively sending corresponding alarm information of the corresponding well lid to the mobile supervision terminal APP when the well lid state is analyzed to be that the well lid is normally closed and the well lid is inclined, when the well lid state is analyzed to be that the well lid is abnormally opened, and when the well lid state is analyzed to be that the well lid is forgotten to be closed; the system is also used for loading the real-time position of the corresponding well lid on a GIS map for display after sending corresponding alarm information of the corresponding well lid to the mobile supervision terminal APP;
the mobile supervision terminal APP is used for being connected to the cloud monitoring platform to check the well lid state of the well lid in the district, receiving and checking alarm information sent by the cloud monitoring platform, and loading the position of the well lid receiving the alarm information in the normal closing state on a GIS map to display the position.
Furthermore, a liquid level sensor used for monitoring the liquid level in the well is integrated at the sensor terminal, and the liquid level sensor is connected with the micro control unit.
Furthermore, the mobile supervision terminal APP is also used for uploading installation and maintenance information corresponding to the well lid to be monitored to the cloud monitoring platform for storage;
RFID electronic tags are respectively arranged on the sensor terminals, and an electronic tag code playing a role of unique identification is stored in each RFID electronic tag;
and the RFID electronic tag on each sensor terminal is respectively associated with the installation and maintenance information in the life cycle of the well lid stored in the cloud monitoring platform.
Further, the well lid adopts the well lid that sets the well lid electronic lock.
Furthermore, a data interaction interface for performing data bidirectional interaction with other platforms or systems is reserved on the cloud monitoring platform.
Further, the sensor terminal is also integrated with a gas sensor for monitoring the concentration of methane gas in the well, and the gas sensor is connected with the micro control unit.
In a second aspect, the invention provides a sensor terminal for the NB-IOT based remote manhole cover monitoring system, which includes a housing, and a micro control unit, an NB-IOT wireless communication module connected to the micro control unit, an inclination sensor for monitoring an inclination angle of a manhole cover in real time, and a GPS positioning module for monitoring a real-time position of the manhole cover equipped with the sensor terminal in real time are integrated in the housing.
Furthermore, a liquid level sensor used for monitoring the liquid level in the well is arranged on the shell and connected with the micro control unit.
Furthermore, the outer side wall of the shell is provided with RFID electronic tags, and each RFID electronic tag is internally provided with an electronic tag code which plays a role in unique identification.
Further, a gas sensor for monitoring the concentration of methane gas in the well is arranged on the shell and connected with the micro control unit.
The invention has the beneficial effects that:
(1) the invention provides a manhole cover remote monitoring system based on NB-IOT (NB-internet of things), which comprises a cloud monitoring platform, a sensor terminal and a mobile supervision terminal APP, wherein the sensor terminal comprises an inclination angle sensor for monitoring the inclination angle of a manhole cover in real time and a GPS (global positioning system) positioning module for monitoring the real-time position of the manhole cover provided with the sensor terminal in real time, when the system is used, the cloud monitoring platform receives all relevant information transmitted by the sensor terminal on each manhole cover to be monitored in real time, correspondingly analyzes and stores the state of the manhole cover of each manhole cover to be monitored through the received data in real time, and respectively sends corresponding alarm information of the corresponding manhole cover to be monitored to the mobile supervision terminal APP when the state of the manhole cover corresponding to the manhole cover to be monitored is normally closed and inclined and the state of the manhole cover corresponding to be monitored is abnormally opened, thereby being beneficial to forget, The well lid slope and the well lid phenomenon of losing report to the police to relevant staff in time maintain the well lid or in time mend ann well lid.
(2) According to the invention, the RFID electronic tags are arranged on the sensor terminal and are respectively associated with the installation and maintenance information of the well lid stored in the cloud monitoring platform in the life cycle, when the system is used, a worker opens the mobile supervision terminal APP installed in the smart phone, then scans the RFID electronic tags on the sensor terminal through the mobile phone camera according to operation prompts, and can check all past installation and maintenance information of the well lid where the current sensor terminal is located through the mobile supervision terminal APP, so that the maintenance of the well lid to be monitored is avoided, and the potential safety hazard caused by the fact that the well lid is damaged due to long-term maintenance is reduced.
(3) The gas sensor is integrated on the sensor terminal, so that the methane gas concentration monitoring device has the function of monitoring the concentration of methane gas in the well.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic functional block diagram of a system of embodiment 1 of the present invention.
Fig. 2 is a schematic functional block diagram of a system of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of a sensor terminal according to embodiment 3 of the present invention.
Fig. 4 is a schematic structural diagram of a sensor terminal provided in embodiment 4 of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
FIG. 1 is an embodiment of the NB-IOT based manhole cover remote monitoring system of the present invention.
As shown in fig. 1, the NB-IOT-based manhole cover remote monitoring system includes a cloud monitoring platform 101, a mobile supervision terminal APP102 installed on a smart phone, and a plurality of sensor terminals 103 installed on the inner side wall of a manhole cover to be monitored in a one-to-one manner. A micro control unit 1031, an NB-IOT wireless communication module 1032 connected to the micro control unit 1031, an inclination angle sensor 1033 for monitoring the inclination angle of the manhole cover in real time, and a GPS positioning module 1034 for monitoring the real-time position of the manhole cover with the sensor terminal 103 in real time are integrated in each sensor terminal 103. The cloud monitoring platform 101 is connected with each sensor terminal 103 and a mobile supervision terminal APP102 installed on a smart phone through a wireless network, is used for acquiring data monitored by each sensor terminal 103 in real time, correspondingly analyzing and storing the well lid state of each well lid through the acquired data in real time, and respectively sending corresponding alarm information of the corresponding well lid to the mobile supervision terminal APP102 when the well lid state is that the well lid is normally closed and the well lid is inclined, when the well lid state is abnormally opened, and when the well lid state is that the well lid is forgotten to be closed; and the well lid real-time position display method is also used for loading the real-time position of the corresponding well lid on a GIS map for display after corresponding alarm information of the corresponding well lid is sent to the mobile supervision terminal APP 102. The mobile supervision terminal APP102 is used for accessing the cloud monitoring platform 101 to check the well lid state of the well lid in the district, receiving alarm information sent by the cloud monitoring platform 101 and checking the alarm information, and loading the position of the well lid corresponding to the received alarm information in the normal closing state on a GIS map for displaying.
Before the monitoring well lid is used, a worker installs the mobile supervision terminal APP102 on the smart phone of the worker, and the sensor terminals 103 are installed on the inner side wall of each well lid to be monitored one to one. During the use, the staff registers sensor terminal 103 on every well lid that waits to monitor to cloud monitoring platform 101 through the mobile supervision terminal APP102 of installation in its smart mobile phone.
During use, the sensor terminals 103 on each manhole cover to be monitored respectively monitor the inclination angle of each manhole cover to be monitored in real time through the inclination angle sensor 1033, monitor the real-time position of each manhole cover to be monitored in real time through the GPS positioning module 1034, and upload the monitored related information to the cloud monitoring platform 101 in real time. Cloud monitor platform 101 real-time reception respectively treats each relevant information that the sensor terminal 103 on the monitoring well lid transmitted, and pass through received data in real time, correspond the analysis respectively and treat the well lid state and the storage of monitoring well lid, the well lid state that treats the monitoring well lid at the analysis corresponds when the well lid state of treating the monitoring well lid is that the well lid normally closes and well lid slope, and when the well lid state that corresponds the monitoring well lid is opened for the well lid is unusual at the analysis, send corresponding warning information of waiting to monitor the well lid to mobile supervision terminal APP102 respectively, thereby help forgetting the well lid closed, well lid slope and well lid lose the phenomenon and report to the police, so that relevant staff in time maintains the well lid or in time mends the. For example, when the state of the well lid A is analyzed to be that the well lid is normally closed and the well lid is inclined, the cloud monitoring platform 101 sends alarm information of the inclination of the well lid A to the mobile supervision terminal APP 102; when the well lid state of the well lid B is analyzed to be that the well lid is abnormally opened, alarm information of the abnormal opening of the well lid B is sent to a mobile supervision terminal APP 102; when the well lid state of the C well lid is analyzed, the time length for keeping the well lid normally opened exceeds a preset time length threshold value, alarm information that the C well lid is forgotten to be closed is sent to the mobile supervision terminal APP 102. Wherein, the manhole cover A, the manhole cover B and the manhole cover C are all manhole covers to be monitored. In addition, when the cloud monitoring platform 101 sends corresponding alarm information of the well lid to be monitored to the mobile supervision terminal APP102, the real-time position of each well lid to be monitored, which sends the alarm information, is loaded on the GIS map and displayed, so that a monitoring attendant can timely find the alarm information and perform corresponding processing. The alarm information sent by the cloud monitoring platform 101 is received and displayed by a mobile supervision terminal APP102 installed in a staff smart phone, and the position of the well lid to be monitored corresponding to the received alarm information in the normal closing state is loaded on a GIS map to be displayed. The staff can check the well lid state of each well lid to be monitored in time and check each alarm information sent by the cloud monitoring platform 101 in time through the mobile supervision terminal APP102 installed in the smart phone of the staff.
In this embodiment, if the real-time position of the manhole cover to be monitored is consistent with the preset position of the current manhole cover to be monitored in the normal opening state, the manhole cover state of the manhole cover to be monitored is that the manhole cover is normally opened; if the real-time position of the well lid to be monitored is consistent with the preset position of the current well lid to be monitored in the normal closing state, the well lid state of the well lid to be monitored is that the well lid is normally closed; if the real-time position of the well lid to be monitored is inconsistent with the preset position of the current well lid to be monitored when the well lid is in the normal opening state and inconsistent with the preset position of the current well lid to be monitored when the well lid is in the normal closing state, the state of the well lid to be monitored is that the well lid is abnormally opened. When the well lid is abnormally opened, the well lid to be monitored can be in a stolen state.
Wherein, in this embodiment, the well lid state of waiting to monitor the well lid is that the well lid normally closes and when monitoring the inclination that waits to monitor the well lid through inclination sensor 1033 and surpassing the angle scope of preset, it has correspondingly: the well lid to be monitored is inclined.
Wherein, in this embodiment, when the well lid state of waiting to monitor the well lid is that the well lid normally opens, cloud monitor platform 101 can take notes respectively and waits to monitor the well lid and keep the well lid state for the time length that the well lid normally opened, in case wait to monitor the well lid and keep the well lid state for the time length that the well lid normally opened surpass preset time length threshold value, then correspond and have: the well lid to be monitored is forgotten to be closed.
Optionally, as an embodiment of the present invention, the mobile monitoring terminal APP102 is further configured to upload installation and maintenance information corresponding to a manhole cover to be monitored to the cloud monitoring platform 101 for storage; the sensor terminal 103 is respectively provided with an RFID electronic tag 1035, and an electronic tag code playing a role of unique identification is stored in each RFID electronic tag 1035; the RFID electronic tag 1035 on each sensor terminal 103 is respectively associated with installation and maintenance information stored in the cloud monitoring platform 101 during the life cycle of the manhole cover. During the use, the staff can open the mobile supervision terminal APP102 installed in the smart phone, then scan the RFID electronic tag 1035 on the sensor terminal 103 through the mobile phone camera according to the operation prompt to obtain the corresponding electronic tag code, then the mobile supervision terminal APP102 automatically generates the query instruction used for querying the installation and maintenance information of the well lid related to the electronic tag code obtained by current scanning and automatically sends the query instruction to the cloud monitoring platform 101, and then receives and displays the installation and maintenance information of the well lid corresponding to the query instruction returned by the cloud monitoring platform 101. That is, the worker opens the mobile supervision terminal APP102 installed in his smart phone, and then scans the RFID electronic tag 1035 on the sensor terminal 103 through the mobile phone camera according to the operation prompt, and then all past installation and maintenance information of the well lid where the current sensor terminal 103 is located are displayed in the mobile supervision terminal APP102 for the worker to check. Wherein, new installation and maintenance information every time in the life cycle of every well lid all can be uploaded to cloud monitoring platform 101 through mobile supervision terminal APP102 and be stored to the staff looks over next time. Therefore, the maintenance of the well lid to be monitored is avoided from being omitted to a certain extent, and the potential safety hazard caused by the fact that the well lid is damaged due to long-term overhaul is reduced.
In conclusion, the monitoring force of the well lid to be monitored is increased to a certain extent, related workers can master the state of the well lid in time, and potential safety hazards are reduced.
Example 2:
as shown in fig. 2, the present embodiment is different from embodiment 1 in that the NB-IOT based manhole cover remote monitoring system in the present embodiment:
a data interaction interface for performing data bidirectional interaction with other platforms or systems is reserved on the cloud monitoring platform 101;
the sensor terminal 103 is further integrated with a gas sensor 1036 for monitoring the concentration of methane gas in the well, and the gas sensor 1036 is connected with the micro control unit 1031;
the sensor terminal 103 is further integrated with a liquid level sensor 1037 for monitoring the liquid level in the well, and the liquid level sensor 1037 is connected with the micro control unit 1031.
When the manhole cover remote monitoring system based on the NB-IOT is used, the corresponding functional modules can be expanded through the reserved data interaction interface, so that bidirectional data interaction between the manhole cover remote monitoring system based on the NB-IOT and other corresponding platforms or systems is realized.
In addition, when the NB-IOT-based well lid remote monitoring system is used, the concentration of methane gas in a corresponding well, particularly a methane gas well, can be monitored in real time through the gas sensor 1036 of the sensor terminal 103, and the liquid level in the corresponding well can be monitored through the liquid level sensor 1037 of the sensor terminal 103.
The liquid level sensor 1037 in this embodiment is an ultrasonic liquid level sensor. Those skilled in the art can also select other types of liquid level sensors from the prior art to replace the liquid level sensor according to actual conditions.
In order to further increase the safety of using the manhole cover, the manhole cover related in this embodiment is provided with a manhole cover electronic lock.
Example 3:
the embodiment provides a sensor terminal 103, which is used in the NB-IOT-based manhole cover remote monitoring system described in embodiment 1. As shown in fig. 3, the sensor terminal 103 includes a housing 1038, and a micro control unit 1031, an NB-IOT wireless communication module 1032 connected to the micro control unit 1031, an inclination sensor 1033 for monitoring the inclination angle of the manhole cover in real time, and a GPS positioning module 1034 for monitoring the real-time position of the manhole cover with the sensor terminal 103 in real time are integrated in the housing 1038. The outer side wall of the housing 1038 is provided with RFID electronic tags 1035, and each RFID electronic tag 1035 has an electronic tag code for unique identification.
Example 4:
as shown in fig. 4, the present embodiment is different from embodiment 3 in that the sensor terminal 103 in the present embodiment:
a shell 1038 is provided with a liquid level sensor 1037 for monitoring the liquid level in the well, and the liquid level sensor 1037 is connected with the micro control unit 1031;
a gas sensor 1036 for monitoring the concentration of methane gas in the well is also mounted on the housing 1038, the gas sensor 1036 being connected to the micro control unit 1031.
It should be noted that the same and similar parts in the various embodiments in this specification may be referred to each other.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a well lid remote monitering system based on NB-IOT which characterized in that:
the manhole cover remote monitoring system based on the NB-IOT comprises a cloud monitoring platform (101), a mobile supervision terminal APP (102) installed on a smart phone, and a plurality of sensor terminals (103) installed on the inner side wall of a manhole cover to be monitored in a one-to-one mode; wherein the content of the first and second substances,
a micro-control unit (1031), an NB-IOT wireless communication module (1032) connected with the micro-control unit (1031), an inclination angle sensor (1033) used for monitoring the inclination angle of the well lid in real time and a GPS positioning module (1034) used for monitoring the real-time position of the well lid provided with the sensor terminal (103) in real time are integrated in each sensor terminal (103);
the cloud monitoring platform (101) is connected with each sensor terminal (103) and a mobile supervision terminal APP (102) installed on a smart phone through a wireless network, is used for acquiring data monitored by each sensor terminal (103) in real time, correspondingly analyzing and storing the well lid state of each well lid through the acquired data in real time, and respectively sending corresponding alarm information corresponding to the well lid to the mobile supervision terminal APP (102) when the well lid state is analyzed to be that the well lid is normally closed and the well lid is inclined, when the well lid state is analyzed to be that the well lid is abnormally opened, and when the well lid state is analyzed to be that the well lid is forgotten to be closed; the system is also used for loading the real-time position of the corresponding well lid on a GIS map for display after corresponding alarm information of the corresponding well lid is sent to the mobile supervision terminal APP (102);
the mobile supervision terminal APP (102) is used for accessing the cloud monitoring platform (101) to check the well lid state of the well lid in the district, receiving and checking alarm information sent by the cloud monitoring platform (101), and loading the position of the well lid receiving the alarm information in the normal closing state on a GIS map for displaying.
2. The NB-IOT based remote monitoring system for a manhole cover according to claim 1, wherein the sensor terminal (103) further integrates a liquid level sensor (1037) for monitoring a liquid level in the well, and the liquid level sensor (1037) is connected to the micro control unit (1031).
3. The NB-IOT based manhole cover remote monitoring system according to claim 1, wherein the mobile supervision terminal APP (102) is further configured to upload installation and maintenance information corresponding to a manhole cover to be monitored to the cloud monitoring platform (101) for storage;
the sensor terminal (103) is respectively provided with RFID electronic tags (1035), and each RFID electronic tag (1035) is internally provided with an electronic tag code playing a role in unique identification;
and the RFID electronic tag (1035) on each sensor terminal (103) is respectively associated with the installation and maintenance information stored in the cloud monitoring platform (101) in the life cycle of the manhole cover.
4. The NB-IOT based remote monitoring system for a manhole cover according to claim 1, wherein the manhole cover is a manhole cover equipped with an electronic manhole cover lock.
5. The NB-IOT based manhole cover remote monitoring system according to claim 1, wherein the cloud monitoring platform (101) is further reserved with a data interaction interface for bidirectional data interaction with other platforms or systems.
6. The NB-IOT based remote monitoring system for a manhole cover according to claim 1, wherein the sensor terminal (103) further integrates a gas sensor (1036) for monitoring the concentration of methane gas in the well, the gas sensor (1036) being connected to the micro control unit (1031).
7. A sensor terminal (103) for the NB-IOT based remote monitoring system for a manhole cover according to claim 1, wherein the sensor terminal (103) comprises a housing (1038), and the housing (1038) integrates a micro-control unit (1031) and an NB-IOT wireless communication module (1032) connected to the micro-control unit (1031), an inclination angle sensor (1033) for monitoring an inclination angle of the manhole cover in real time, and a GPS positioning module (1034) for monitoring a real-time position of the manhole cover with the sensor terminal (103) in real time.
8. The sensor terminal (103) according to claim 7, characterized in that the housing (1038) is provided with a level sensor (1037) for monitoring a liquid level in the well, the level sensor (1037) being connected to the micro control unit (1031).
9. The sensor terminal (103) of claim 7, wherein the housing (1038) has RFID tags (1035) on its outer sidewalls, and each RFID tag (1035) has an electronic tag code stored therein for unique identification.
10. The sensor terminal (103) according to claim 7, characterized in that a gas sensor (1036) for monitoring the concentration of methane gas in the well is further mounted on the housing (1038), the gas sensor (1036) being connected to said micro control unit (1031).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599123A (en) * | 2020-05-27 | 2020-08-28 | 重庆夔峡信息技术有限公司 | Intelligent well lid monitoring system |
| CN111832760A (en) * | 2020-07-14 | 2020-10-27 | 深圳市法本信息技术股份有限公司 | Automatic inspection method for well lid based on visual algorithm |
| CN111935274A (en) * | 2020-08-06 | 2020-11-13 | 杭州巨骐信息科技股份有限公司 | Intelligent well lid system |
| CN112862651A (en) * | 2021-03-10 | 2021-05-28 | 北京首创股份有限公司 | Management system and general investigation method of intelligent well lid based on Internet of things |
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| CN117686036A (en) * | 2024-02-02 | 2024-03-12 | 杭州临安腾泰实业有限公司 | Intelligent well lid of thing networking based on NB-IOT technique |
| CN117686036B (en) * | 2024-02-02 | 2024-05-03 | 杭州临安腾泰实业有限公司 | Intelligent well lid of thing networking based on NB-IOT technique |
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