CN106790671B - Building structure deformation monitoring method, equipment and system - Google Patents
Building structure deformation monitoring method, equipment and system Download PDFInfo
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- CN106790671B CN106790671B CN201710054481.8A CN201710054481A CN106790671B CN 106790671 B CN106790671 B CN 106790671B CN 201710054481 A CN201710054481 A CN 201710054481A CN 106790671 B CN106790671 B CN 106790671B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
The embodiment of the invention provides a method, equipment and a system for monitoring the deformation of a building structure body, wherein the method comprises the steps of detecting whether the equipment has an effective connection from a wired network port or a WIFI Client to a server; if the connection is valid, uploading the monitoring data to the server, and judging whether the equipment opens the AP access point; when the AP access point is not opened, the AP access point and the DHCP server of the equipment are opened; if no effective connection exists, selecting a piece of equipment with the same networking identification as the equipment at the periphery as the upper-level equipment; the WIFI Client of the device is connected to an AP access point of the upper-level device, and an IP is acquired through a DHCP server of the upper-level device so as to establish effective connection of the server of the device. The embodiment of the invention can flexibly self-organize the network when the monitoring equipment is deployed, can conveniently arrange temporary monitoring equipment, and solves the problems of complex and inflexible network construction when the monitoring equipment is dispersedly arranged in a deformation monitoring scene.
Description
Technical Field
The invention relates to the technical field of building structure monitoring, in particular to a method, equipment and a system for monitoring deformation of a building structure body.
Background
building structures such as reservoir dams or bridges are generally long (several kilometers), monitoring devices are distributed on the dam in a scattered mode, a traditional method is that a line network is arranged on the dam, but the dam or the bridge is guaranteed to be hidden and not damaged, construction is troublesome, a bridge connection amplifying device is possibly needed in the middle, the damage of the line is easy, maintenance is needed, and wiring needs to be conducted when more monitoring devices need to be added temporarily and flexibly at sensitive moments (for example, when more detailed monitoring is needed in a heavy rain season). Another method is to arrange WIFI APs on a dam or a bridge, and monitor devices access to the WIFI APs, but because the monitor devices are distributed on a longer dam or bridge, a single AP cannot cover the WIFI APs, and only a plurality of WIFI APs can be arranged at intervals for networking, the arrangement of the APs is also higher in cost and also needs additional maintenance cost, the coverage of the APs is limited, and the flexibility is also limited.
disclosure of Invention
in view of the above problems, an object of the present invention is to provide a method for monitoring deformation of a building structure, which avoids the work of arranging a line network and a WIFI AP, reduces the maintenance workload of network equipment, and solves the problem of network connection between reservoir dam and bridge monitoring equipment and a server.
In order to achieve the above object, according to one aspect of the present invention, there is provided a building structure deformation monitoring method implemented by monitoring devices distributed on a building structure to be monitored, the method including:
detecting whether the device has an effective connection from a wired network port or a WIFI Client to a server;
when the effective connection exists, uploading monitoring data to the server, and judging whether the equipment opens an AP (access point); the monitoring data comprises deformation of the monitored building structure body at a monitoring point;
When judging that the equipment does not start the AP, starting the AP of the equipment according to the pre-configured network parameters and starting a DHCP server for the equipment; the network parameters at least comprise SSID of an AP access point of the equipment;
When the effective connection does not exist, selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment; the networking identification of any monitoring equipment is recorded on the SSID of the AP access point;
and connecting the WIFI Client of the device to the AP access point of the upper-level device, and acquiring an IP (Internet protocol) through the DHCP (dynamic host configuration protocol) server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server.
preferably, when there is no effective connection, selecting another monitoring device having the same networking identifier as the present device as a superior device in the periphery includes:
When the effective connection does not exist, determining other peripheral monitoring equipment with the same networking identification as the equipment;
and selecting one device with the strongest signal from the other determined monitoring devices as the superior device.
Preferably, the method further comprises:
And when the effective connection does not exist, judging whether the equipment opens the AP access point, and closing the AP access point and the corresponding DHCP server of the equipment when judging that the equipment opens the AP access point.
Preferably, the detecting whether the device has the effective connection between the wired internet access or the WIFI Client and the server is performed, specifically, the detecting whether the device has the effective connection between the wired internet access or the WIFI Client and the server is performed according to a preset detection period.
In order to achieve the above object, another aspect of the present invention provides a building structure deformation monitoring apparatus including:
The effective connection detection module is used for detecting whether the device has effective connection from a wired network port or a WIFI Client to the server;
the effective connection processing module is used for uploading monitoring data to the server and judging whether the equipment opens the AP access point or not when the effective connection exists; the monitoring data comprises deformation of the monitored building structure body at a monitoring point;
the AP opening module is used for opening the AP access point of the equipment according to the pre-configured network parameters and opening a DHCP server for the equipment when judging that the equipment does not open the AP access point; the network parameters at least comprise SSID of an AP access point of the equipment;
the invalid connection processing module is used for selecting other monitoring equipment which has the same networking identification as the equipment at the periphery as the upper-level equipment when the valid connection does not exist; the networking identification of any monitoring equipment is recorded on the SSID of the AP access point;
And the connection establishing module is used for connecting the WIFI Client of the device to the AP access point of the upper-level device and acquiring IP (Internet protocol) through the DHCP server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server.
preferably, the invalid connection processing module includes:
the networking equipment determining unit is used for determining other monitoring equipment with the same networking identification as the equipment at the periphery when the effective connection does not exist;
And the superior equipment selection unit is used for selecting one piece of equipment with the strongest signal from the determined other pieces of monitoring equipment as superior equipment.
Preferably, the invalid connection processing module is further configured to:
And when the effective connection does not exist, judging whether the equipment opens the AP access point, and closing the AP access point and the corresponding DHCP server of the equipment when judging that the equipment opens the AP access point.
preferably, the effective connection detection module specifically detects whether the device has an effective connection from the wired internet access or the WIFI Client to the server according to a preset detection period.
the third aspect of the present invention further provides a building structure deformation monitoring system, which includes a server and a plurality of building structure deformation monitoring devices that have the same networking identifier and are distributed on the monitored building structure, and the building structure deformation monitoring devices described in the second aspect above.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the embodiment of the invention provides a method, equipment and a system for monitoring the deformation of a building structure body, wherein the method comprises the steps of detecting whether the equipment has an effective connection from a wired network port or a WIFI Client to a server; when the effective connection exists, uploading monitoring data to the server, and judging whether the equipment opens an AP (access point); when judging that the equipment does not start the AP, starting the AP of the equipment according to the pre-configured network parameters and starting a DHCP server for the equipment; when the effective connection does not exist, selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment; and connecting the WIFI Client of the device to the AP access point of the upper-level device, and acquiring an IP (Internet protocol) through the DHCP (dynamic host configuration protocol) server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server. Each monitoring device uploads monitoring data to the server in a chain connection mode, and the chain connection mode is particularly suitable for monitoring devices distributed over long distances. Each monitoring device serves as a client side accessing the WIFI AP and also serves as the WIFIAP, the coverage rate of the network is expanded by using the monitoring device, and the required network cable or the WIFI AP is reduced. The embodiment of the invention can flexibly self-organize the network when the monitoring equipment is deployed, can conveniently arrange temporary monitoring equipment, and solves the problems of complex and inflexible network construction when the monitoring equipment is dispersedly arranged in the deformation monitoring scene of a dam and a bridge.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
fig. 1 is a schematic flow chart of a method for monitoring deformation of a building structure according to an embodiment of the present invention;
fig. 2 is a block diagram of a building structure deformation monitoring apparatus according to an embodiment of the present invention.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Please refer to fig. 1, which is a schematic flow chart of a method for monitoring deformation of a building structure according to an embodiment of the present invention. The method for synchronizing the configuration of the wireless networking equipment is implemented by distributing the wireless networking equipment on monitoring equipment of a monitored building structure, and comprises the following steps of S1-S5:
s1, detecting whether the device has effective connection between a wired internet access or a WIFI Client and a server;
s2, when the effective connection exists, uploading the monitoring data to the server, and judging whether the device opens the AP access point; the monitoring data comprises deformation of the monitored building structure body at a monitoring point;
S3, when judging that the device does not start the AP access point, starting the AP access point of the device according to the pre-configured network parameters and starting a DHCP server for the device; the network parameters at least comprise SSID of an AP access point of the equipment;
S4, when the effective connection does not exist, selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment; the networking identification of any monitoring equipment is recorded on the SSID of the AP access point;
And S5, connecting to the AP access point of the upper-level equipment through the WIFI Client of the equipment, and acquiring IP through the DHCP server of the upper-level equipment to establish effective connection between the WIFI Client of the equipment and the server.
The WIFI Client is a WIFI Client, and a wireless network card is used as a receiver; the AP access point takes a wireless network card as a transmitter. Therefore, the device has the functions of transmitting wireless signals and receiving wireless signals at the same time. In order to realize the point, two WIFI network interfaces can be configured on the device and are respectively used for the WIFI Client and the AP access point; or only one WIFI network interface is configured for the WIFI Client, and the AP access point is virtualized based on the Linux system.
In the embodiment of the invention, the monitoring equipment can open the AP access point when the wired internet access or the effective connection of the WIFI Client to the server exists, and other equipment with the same networking identification can be connected to the AP access point of the monitoring equipment through the WIFI Client, so that the effective connection to the server is also formed. Therefore, a plurality of monitoring devices with the same networking identification can be distributed on a monitored building structure body such as a dam, each monitoring device uploads monitoring data to a server in a chain connection mode, and the chain connection mode is particularly suitable for the monitoring devices distributed on a long distance. Each monitoring device acts as both a client for accessing WIFIAP and as WIFIAP, using the monitoring device itself to extend the coverage of the network, reducing the required network wires or WIFIAP. If one equipment is disconnected, the scheme can monitor the disconnection and the rerun, and carries out automatic re-networking; and the network is automatically accessed if a new device is placed at a new monitoring point.
The working process of the embodiment of the invention is illustrated as follows:
assume that A, B, C three monitoring devices are deployed on the monitored building structure. After the equipment A and the equipment B are started, the equipment A and the equipment B find that effective connection to the server does not exist, and continuously search the previous-level equipment for connection. The user inserts a network cable into the wired network port of the device a at this time to connect to the server, so that the device a detects the valid connection, and starts the AP access point and the DHCP server of the device a.
the device B searches the AP access point of the device A and takes the device A as the upper-level device. The WIFI Client of device B connects to the AP access point of device a and thus to the server, and similarly turns on the AP access point and DHCP server of device B.
And the device C is started up later and can simultaneously search the AP access points of the device A and the device B, and the device C selects the device B as the upper-level device according to a pre-configured selection strategy. The WIFI Client of device C connects to the AP access point of device B and thus to the server, and similarly turns on the AP access point and DHCP server of device C. Therefore, at this time, the network connection relationship is server ← device a ← device B ← device C.
Assuming that the device B is powered off due to a failure, the device C cannot detect an effective connection with the server at this time, and searches for the previous device again, and the device B searches for the device a as the previous device at this time, so that the WIFI Client of the device C is connected to the AP access point of the device a and thus is connected to the server. At this time, the network connection relationship is server ← device a ← device C.
in step S1, the detecting whether the device has an effective connection from the wired internet access or the WIFI Client to the server specifically includes detecting whether the device has an effective connection from the wired internet access or the WIFI Client to the server according to a preset detection period.
In step S3, the network parameter may further include a password of the AP access point of the device.
in step S4, the networking ID is described in the form of a prefix in the SSID. Specifically, the SSID is a networking ID (prefix) + identifier. The identifier is used to distinguish different devices within the same group of networks and may be a device ID or number.
preferably, in step S4, when there is no effective connection, the selecting, in the periphery, another monitoring device having the same networking identifier as the present device as a superior device includes:
when the effective connection does not exist, determining other peripheral monitoring equipment with the same networking identification as the equipment;
And selecting one device with the strongest signal from the other determined monitoring devices as the superior device.
preferably, the method further comprises:
And when the effective connection does not exist, judging whether the equipment opens the AP access point, and closing the AP access point and the corresponding DHCP server of the equipment when judging that the equipment opens the AP access point. When the device does not have effective connection to the server, if the AP access point is opened as usual, on one hand, the power consumption is increased, and on the other hand, other devices are connected to the device to cause false connection, so that the time required by connection is increased. Therefore, when it is determined that the device does not have an effective connection to the server and the AP access point is already opened, the AP access point and the corresponding DHCP server of the device are closed, thereby avoiding the above-mentioned problem.
In order to implement the building structure deformation monitoring method, the embodiment of the invention also provides building structure deformation monitoring equipment. As shown in fig. 2, it is a block diagram of a building structure deformation monitoring device according to an embodiment of the present invention, and includes:
the effective connection detection module 1 is used for detecting whether the device has an effective connection from a wired network port or a WIFI Client to a server;
the effective connection processing module 2 is used for uploading monitoring data to the server and judging whether the equipment opens the AP access point when the effective connection exists; the monitoring data comprises deformation of the monitored building structure body at a monitoring point;
the AP opening module 3 is used for opening the AP access point of the equipment according to the pre-configured network parameters and opening a DHCP server for the equipment when judging that the equipment does not open the AP access point; the network parameters at least comprise SSID of an AP access point of the equipment;
The invalid connection processing module 4 is used for selecting other monitoring equipment which has the same networking identifier as the equipment at the periphery as the upper-level equipment when the valid connection does not exist; the networking identification of any monitoring equipment is recorded on the SSID of the AP access point;
and the connection establishing module 5 is used for connecting the WIFI Client of the device to the AP access point of the upper-level device and acquiring an IP (Internet protocol) through the DHCP server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server.
Preferably, the invalid connection processing module 4 includes:
the networking equipment determining unit is used for determining other monitoring equipment with the same networking identification as the equipment at the periphery when the effective connection does not exist;
And the superior equipment selection unit is used for selecting one piece of equipment with the strongest signal from the determined other pieces of monitoring equipment as superior equipment.
Preferably, the invalid connection processing module 4 is further configured to, when the valid connection does not exist, determine whether the AP access point has been opened by the device, and when it is determined that the AP access point has been opened by the device, close the AP access point and the corresponding DHCP server of the device.
Preferably, the effective connection detecting module 1 specifically detects whether the device has an effective connection from the wired internet access or the WIFI Client to the server according to a preset detection period.
it should be noted that, the building structure deformation monitoring device provided in the embodiment of the present invention is used for executing all the process steps of the building structure deformation monitoring method, and the working principle and the beneficial effects thereof are in one-to-one correspondence, and thus, no further description is given.
the embodiment of the invention also provides a building structure deformation monitoring system which comprises a server and a plurality of building structure deformation monitoring devices which have the same networking identification and are distributed on the monitored building structure, and the building structure deformation monitoring devices are shown in fig. 2.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the embodiment of the invention provides a method, equipment and a system for monitoring the deformation of a building structure body, wherein the method comprises the steps of detecting whether the equipment has an effective connection from a wired network port or a WIFI Client to a server; when the effective connection exists, uploading monitoring data to the server, and judging whether the equipment opens an AP (access point); when judging that the equipment does not start the AP, starting the AP of the equipment according to the pre-configured network parameters and starting a DHCP server for the equipment; when the effective connection does not exist, selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment; and connecting the WIFI Client of the device to the AP access point of the upper-level device, and acquiring an IP (Internet protocol) through the DHCP (dynamic host configuration protocol) server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server. Each monitoring device uploads monitoring data to the server in a chain connection mode, and the chain connection mode is particularly suitable for monitoring devices distributed over long distances. Each monitoring device serves as a client side accessing the WIFI AP and also serves as the WIFIAP, the coverage rate of the network is expanded by using the monitoring device, and the required network cable or the WIFI AP is reduced. The embodiment of the invention can flexibly self-organize the network when the monitoring equipment is deployed, can conveniently arrange temporary monitoring equipment, and solves the problems of complex and inflexible network construction when the monitoring equipment is dispersedly arranged in the deformation monitoring scene of a dam and a bridge.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
it will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (9)
1. a method for monitoring deformation of a building structure, the method being implemented by monitoring equipment distributed on the building structure to be monitored, the method comprising:
detecting whether the device has an effective connection from a wired network port or a WIFI Client to a server;
when the effective connection exists, uploading monitoring data to the server, and judging whether the equipment opens an AP (access point); the monitoring data comprises deformation of the monitored building structure body at a monitoring point;
when judging that the equipment does not start the AP, starting the AP of the equipment according to the pre-configured network parameters and starting a DHCP server for the equipment; the network parameters at least comprise SSID of an AP access point of the equipment;
When the effective connection does not exist, selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment, and starting an AP access point and a DHCP server of the upper-level equipment; the networking identification of any monitoring equipment is recorded on the SSID of the AP access point;
And connecting the WIFI Client of the device to the AP access point of the upper-level device, and acquiring an IP (Internet protocol) through the DHCP (dynamic host configuration protocol) server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server.
2. The method for monitoring deformation of a building structure according to claim 1,
when the effective connection does not exist, selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment, wherein the method comprises the following steps:
when the effective connection does not exist, determining other peripheral monitoring equipment with the same networking identification as the equipment;
and selecting one device with the strongest signal from the other determined monitoring devices as the superior device.
3. The method of monitoring deformation of a building structure as recited in claim 2, further comprising:
And when the effective connection does not exist, judging whether the equipment opens the AP access point, and closing the AP access point and the corresponding DHCP server of the equipment when judging that the equipment opens the AP access point.
4. the method for monitoring deformation of a building structure according to any one of claims 1 to 3, wherein the detecting whether the device has an effective connection of a wired internet access or a WIFI Client to a server is performed, specifically, whether the device has an effective connection of a wired internet access or a WIFI Client to a server is performed according to a preset detection period.
5. a building structure deformation monitoring apparatus, comprising:
The effective connection detection module is used for detecting whether the device has effective connection from a wired network port or a WIFI Client to the server;
the effective connection processing module is used for uploading monitoring data to the server and judging whether the equipment opens the AP access point or not when the effective connection exists; the monitoring data comprises deformation of the monitored building structure body at a monitoring point;
The AP opening module is used for opening the AP access point of the equipment according to the pre-configured network parameters and opening a DHCP server for the equipment when judging that the equipment does not open the AP access point; the network parameters at least comprise SSID of an AP access point of the equipment;
The invalid connection processing module is used for selecting other monitoring equipment with the same networking identification as the equipment at the periphery as the upper-level equipment when the valid connection does not exist, and opening an AP access point and a DHCP server of the upper-level equipment; the networking identification of any monitoring equipment is recorded on the SSID of the AP access point;
And the connection establishing module is used for connecting the WIFI Client of the device to the AP access point of the upper-level device and acquiring IP (Internet protocol) through the DHCP server of the upper-level device so as to establish effective connection between the WIFI Client of the device and the server.
6. The building structure deformation monitoring device of claim 5,
the invalid connection processing module includes:
The networking equipment determining unit is used for determining other monitoring equipment with the same networking identification as the equipment at the periphery when the effective connection does not exist;
and the superior equipment selection unit is used for selecting one piece of equipment with the strongest signal from the determined other pieces of monitoring equipment as superior equipment.
7. The building structure deformation monitoring device of claim 6, wherein the invalid connection processing module is further configured to:
and when the effective connection does not exist, judging whether the equipment opens the AP access point, and closing the AP access point and the corresponding DHCP server of the equipment when judging that the equipment opens the AP access point.
8. The building structure deformation monitoring device according to any one of claims 5 to 7, wherein the effective connection detection module is specifically configured to detect whether there is an effective connection between the wired internet access or the WIFI Client and the server according to a preset detection period.
9. A building structure deformation monitoring system, characterized by comprising a server and a plurality of building structure deformation monitoring devices which have the same networking identification and are distributed on a monitored building structure according to any one of claims 5 to 8.
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| CN201710054481.8A CN106790671B (en) | 2017-01-24 | 2017-01-24 | Building structure deformation monitoring method, equipment and system |
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| CN201710054481.8A CN106790671B (en) | 2017-01-24 | 2017-01-24 | Building structure deformation monitoring method, equipment and system |
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| CN106790671B true CN106790671B (en) | 2019-12-10 |
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| CN111895928A (en) * | 2020-08-10 | 2020-11-06 | 袁炎 | Monitoring method and system for building structural member |
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| US8160037B2 (en) * | 2008-07-18 | 2012-04-17 | Getac Technology Corporation | System and method for reinforcing wireless communication capability within wireless network group |
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| CN101969386A (en) * | 2010-11-09 | 2011-02-09 | 道有道(北京)科技有限公司 | Log acquisition device and log acquisition method |
| CN104967656A (en) * | 2015-04-29 | 2015-10-07 | 北京玛斯特科技有限公司 | Wireless ZigBee data acquisition and real-time house deformation monitoring remote transmission system |
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Application publication date: 20170531 Assignee: Guangzhou Geoelectron Science & Technology Company Limited Assignor: Shenzhen Beidou Zhixing Technology Co. Ltd. survey Contract record no.: X2020980000373 Denomination of invention: Building structural body deformation monitoring method, equipment and system Granted publication date: 20191210 License type: Exclusive License Record date: 20200306 |