Deformation sensing method and related products

Abstract

A deformation sensing method, comprising: a BBU (201, 501, 801) transmitting acquisition alignment information to an AISU (203, 503, 803) via an AAU (202, 502, 802); the BBU (201, 501, 801) sending a sensing signal via the AAU (202, 502, 802); on the basis of the acquisition alignment information, the AISU (203, 503, 803) acquiring a displacement amount caused when the AAU (202, 502, 802) sends the sensing signal; the AISU (203, 503, 803) transmitting the displacement amount to the BBU (201, 501, 801) via the AAU (202, 502, 802); the BBU (201, 501, 801) receiving at least two reflected signals; the BBU (201, 501, 801) acquiring an initial deformation amount of a target object on the basis of the at least two reflected signals; and the BBU (201, 501, 801) correcting the initial deformation amount on the basis of the displacement amount to obtain a corrected deformation amount. By utilizing existing base station devices that have already been deployed and operate around the clock, the BBU (201, 501, 801) receives the displacement amount caused when the AAU (202, 502, 802) sends the sensing signal and acquired by the AISU (203, 503, 803), and then corrects the initial deformation amount on the basis of the displacement amount, thereby overcoming interference to the sensing signal from the external environment and achieving high-accuracy, around-the-clock measurement of minute deformations. Further provided are a deformation sensing apparatus (1200), a deformation sensing system (2000, 5000, 8000), a chip, a chip module, a computer-readable storage medium, and a computer program product comprising instructions.

Description

Deformation perception methods and related products

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 7, 2024, with application number 202410175452.7 and invention name “Deformation Sensing Method and Related Products”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a deformation sensing method and related products. Background Art

[0003] As bridges play an increasingly important role in transportation, continuous advancements in bridge design theory and construction technology have led to new breakthroughs in bridge spans and increasingly complex structural forms.

[0004] However, currently, middle-aged and old bridges account for a considerable proportion of the domestic land transportation network. As the age of bridges increases, due to the influence of natural factors such as the environment and climate, the increasing traffic volume and the increasing number of heavy and overweight vehicles crossing the bridges, as well as human accidents, many bridges have shown serious functional degradation. Therefore, it is necessary to monitor the health of bridges and carry out necessary maintenance to prevent disasters such as bridge collapse.

[0005] Traditional inspection methods rely primarily on manual labor, requiring regular on-site inspections to obtain measured data, followed by computational analysis to draw conclusions. This process is time-consuming and fails to accurately reflect the operational status of bridges. Monitoring equipment can be categorized as contact or non-contact. Contact monitoring devices, such as accelerometers and strain gauges, must be installed directly at the monitoring point and require extensive data transmission lines, which is time-consuming and labor-intensive. Long-term operation reduces durability and increases maintenance costs. Non-contact monitoring devices, such as video surveillance, the Global Navigation Satellite System (GNSS), and monitoring radar, can acquire deformation information from a distance. However, video surveillance and GNSS monitoring have relatively low accuracy, while monitoring radar is bulky, heavy, and expensive, making it difficult to operate online around the clock.

[0006] In view of this, how to achieve all-weather micro-deformation measurement with high accuracy is an urgent problem to be solved. Summary of the Invention

[0007] The present application provides a deformation sensing method and related products to achieve all-weather micro-deformation measurement with high accuracy.

[0008] In a first aspect, a deformation sensing method is provided. The method is applied to a baseband unit (BBU), wherein the BBU is connected to an active antenna unit (AAU), and the AAU is connected to an antenna information sensor unit (AISU). The method includes: the BBU transmitting acquisition alignment information to the AISU via the AAU, the acquisition alignment information including an offset of a sensing signal relative to a first timing signal of the BBU and a transmission period of the sensing signal; the BBU transmitting the sensing signal via the AAU; the BBU receiving a displacement from the AISU via the AAU, the displacement being a displacement caused by the AISU acquiring the sensing signal from the AAU based on the acquisition alignment information; the BBU receiving at least two reflected signals from a target object in response to the sensing signal; the BBU obtaining an initial deformation of the target object based on the at least two reflected signals; and the BBU correcting the initial deformation based on the displacement to obtain a corrected deformation.

[0009] In this regard, by utilizing the existing deployed, all-weather base station equipment, the BBU transmits collection alignment information to the AISU, so that the AISU collects the displacement caused by the AAU sending the BBU's perception signal based on the collection alignment information, and sends the displacement to the BBU. The BBU can then correct the initial deformation of the target object obtained by itself based on the displacement, overcome the interference of the external environment on the perception signal, and thus achieve all-weather small deformation measurement with high accuracy.

[0010] In combination with the first aspect, in a possible implementation, the method further includes: performing time synchronization between the BBU and the AISU.

[0011] In this implementation, the BBU and AISU are time synchronized to improve the reliability of the data collected by the AISU.

[0012] In combination with the first aspect, in another possible implementation, the BBU is further connected to a first timing module, where the first timing module is based on a satellite signal or an Ethernet signal; and time synchronization between the BBU and the AISU includes: the BBU calibrating a clock inside the BBU based on a reference time provided by the first timing module, wherein the first timing signal is generated by the first timing module.

[0013] In this implementation, both the BBU and AISU perform clock calibration based on satellite signals or Ethernet signals, which improves the reliability of data collected by the AISU.

[0014] In combination with the first aspect, in another possible implementation, the BBU is further connected to a third timing module, where the third timing module is based on a satellite signal or an Ethernet signal. Time synchronization between the BBU and the AISU includes: the BBU calibrating a clock within the BBU based on a reference time provided by the third timing module, where the first timing signal is generated by the third timing module; the BBU sending the first timing signal to the AISU via the AAU; the BBU receiving, via the AAU, phase relationship information between a second timing signal from the AISU and the first timing signal, where the second timing signal is generated by a fourth timing module in the AISU, where the fourth timing module is based on a crystal oscillator in the AISU; the BBU obtaining phase compensation information based on the first timing signal and the phase relationship information; and the BBU sending the phase compensation information to the AISU via the AAU.

[0015] In this implementation, the BBU performs clock calibration based on satellite signals or Ethernet signals, and the AISU performs time synchronization with the BBU based on the phase compensation information sent by the BBU, thereby improving the reliability of the data collected by the AISU.

[0016] In combination with the first aspect, in another possible implementation, the corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

[0017] In a second aspect, a deformation sensing method is provided. The method is applied to an AISU, where the AISU is connected to a BBU via an AAU. The method includes: the AISU receiving, via the AAU, acquisition alignment information connected to the BBU, the acquisition alignment information including an offset of a perception signal relative to a first timing signal of the BBU and a transmission period of the perception signal; the AISU acquiring, based on the acquisition alignment information, a displacement caused by the AAU sending the perception signal; and the AISU transmitting the displacement to the BBU via the AAU.

[0018] In this regard, by utilizing the existing deployed, all-weather base station equipment, the AISU receives the acquisition alignment information transmitted by the BBU, collects the displacement caused by the AAU sending the BBU's perception signal based on the acquisition alignment information, and sends the displacement to the BBU. This allows the BBU to correct the initial deformation of the target object obtained by itself based on the displacement, overcome the interference of the external environment on the perception signal, and thus achieve all-weather small deformation measurement with high accuracy.

[0019] In combination with the second aspect, in a possible implementation, the AISU includes a sensor; and the sensor collects the displacement caused by the AAU sending the perception signal based on the collected alignment information.

[0020] In combination with the second aspect, in another possible implementation, the method further includes: the AISU and the BBU performing time synchronization.

[0021] In conjunction with the second aspect, in another possible implementation, the AISU further includes a second timing module connected to the sensor, where the second timing module is based on a satellite signal or an Ethernet signal. The time synchronization between the AISU and the BBU includes: the AISU calibrating a clock within the AISU based on a reference time provided by the second timing module.

[0022] With reference to the second aspect, in yet another possible implementation, the AISU further includes a fourth timing module connected to the sensor, where the fourth timing module is based on a crystal oscillator in the AISU; and time synchronization between the AISU and the BBU includes: receiving, by the AISU, the first timing signal from the BBU through the AAU; obtaining, by the AISU, phase relationship information between a second timing signal and the first timing signal, where the second timing signal is generated by the fourth timing module; sending, by the AISU, the phase relationship information to the BBU through the AAU; receiving, by the AISU, phase compensation information from the BBU through the AAU, where the phase compensation information is obtained by the BBU based on the first timing signal and the phase relationship information; and time synchronization between the AISU and the BBU based on the phase compensation information.

[0023] In combination with the second aspect, in another possible implementation, the corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

[0024] According to a third aspect, a deformation sensing method is provided, which is applied to a deformation sensing system, wherein the deformation sensing system includes a BBU, an AAU connected to the BBU, and an AISU connected to the AAU. The method includes: the BBU transmitting acquisition alignment information to the AISU through the AAU, the acquisition alignment information including an offset of a perception signal relative to a first timing signal of the BBU and a transmission period of the perception signal; the BBU sending the perception signal through the AAU; the AISU acquiring a displacement caused by the AAU sending the perception signal based on the acquisition alignment information; the AISU transmitting the displacement to the BBU through the AAU; the BBU receiving at least two reflected signals from a target object for the perception signal; the BBU obtaining an initial deformation of the target object based on the at least two reflected signals; and the BBU correcting the initial deformation based on the displacement to obtain a corrected deformation.

[0025] In combination with the third aspect, in a possible implementation, the AISU includes a sensor; and the sensor collects the displacement caused by the AAU sending the perception signal based on the collected alignment information.

[0026] In combination with the third aspect, in another possible implementation, the method further includes: performing time synchronization between the BBU and the AISU.

[0027] In combination with the third aspect, in another possible implementation, the deformation perception system further includes a first timing module connected to the BBU, and the AISU further includes a second timing module connected to the sensor, and both the first timing module and the second timing module are based on satellite signals or Ethernet signals; the BBU and the AISU perform time synchronization, including: the BBU calibrating a clock inside the BBU based on a reference time provided by the first timing module, wherein the first timing signal is generated by the first timing module; and the AISU calibrating a clock inside the AISU based on the reference time provided by the second timing module.

[0028] In combination with the third aspect, in another possible implementation, the deformation sensing system further includes a third timing module connected to the BBU, and the AISU further includes a fourth timing module connected to the sensor, the third timing module is based on a satellite signal or an Ethernet signal, and the fourth timing module is based on a crystal oscillator in the AISU; time synchronization between the BBU and the AISU includes: the BBU calibrating a clock within the BBU based on a reference time provided by the third timing module, wherein the first timing signal is generated by the third timing module; the BBU sending the first timing signal to the AISU via the AAU; the AISU obtaining phase relationship information between a second timing signal and the first timing signal, wherein the second timing signal is generated by the fourth timing module; the AISU sending the phase relationship information to the BBU via the AAU; the BBU obtaining phase compensation information based on the first timing signal and the phase relationship information; the BBU sending the phase compensation information to the AISU via the AAU; and the AISU performing time synchronization with the BBU based on the phase compensation information.

[0029] In combination with the third aspect, in another possible implementation, the corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

[0030] In a fourth aspect, a deformation sensing device is provided for implementing the deformation sensing method of the first aspect or any implementation of the first aspect. The device can be a BBU, a module applied to a BBU (such as a processor, chip, or chip system), or a logical node, logical module, or software that implements all or part of the BBU functions.

[0031] In a fifth aspect, a deformation sensing device is provided for implementing the deformation sensing method of the second aspect or any implementation thereof. The device may be an AISU, a module (e.g., a processor, chip, or chip system) implemented in an AISU, or a logical node, logic module, or software capable of implementing all or part of the AISU's functionality.

[0032] In a possible implementation, the deformation sensing device in the fourth to fifth aspects includes a unit for respectively executing the method in any one of the first to second aspects or any one of the implementations.

[0033] In another possible implementation, the deformation sensing device in the fourth to fifth aspects includes a processor coupled to a memory; the processor is configured to enable the device to perform the corresponding functions in the above-mentioned deformation sensing method. The memory is used to couple with the processor, which stores the necessary programs (instructions) and / or data for the device. Optionally, the deformation sensing device may further include a communication interface for enabling communication between the device and other network elements. Optionally, the memory may be located inside the deformation sensing device or outside the deformation sensing device.

[0034] In another possible implementation, the deformation sensing device in the fourth to fifth aspects includes a processor and a transceiver, wherein the processor is coupled to the transceiver, and the processor is used to execute a computer program or instruction to control the transceiver to receive and send information; when the processor executes the computer program or instruction, the processor is also used to implement the above method through a logic circuit or execute code instructions. The transceiver can be a transceiver, a transceiver circuit, or an input-output interface, which is used to receive signals from deformation sensing devices other than the deformation sensing device and transmit them to the processor, or to send signals from the processor to deformation sensing devices other than the deformation sensing device. When the deformation sensing device is a chip, the transceiver is a transceiver circuit or an input-output interface.

[0035] When the deformation sensing device in the fourth and fifth aspects is a chip, the transmitting unit may be an output unit, such as an output circuit or a communication interface; and the receiving unit may be an input unit, such as an input circuit or a communication interface. When the deformation sensing device is a terminal device, the transmitting unit may be a transmitter or a transmitter; and the receiving unit may be a receiver or a receiver.

[0036] In a sixth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer program or instruction is executed, the methods described in the above aspects are implemented.

[0037] In a seventh aspect, a computer program product comprising instructions is provided. When the instructions are executed on a deformation sensing device, the deformation sensing device is caused to execute the methods described in the above aspects.

[0038] In an eighth aspect, a deformation perception system is provided, comprising a BBU, an AISU, and an AAU connected to the BBU and the AISU, respectively; wherein the BBU is used to execute the method described in the first aspect or any one of the implementations of the first aspect, and the AISU is used to execute the method described in the second aspect or any one of the implementations of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0040] FIG2 is a schematic diagram of the architecture of a deformation sensing system provided in an embodiment of the present application;

[0041] FIG3 is a schematic diagram of the principle of deformation sensing provided by an embodiment of the present application;

[0042] FIG4 is a schematic diagram of a flow chart of a deformation sensing method provided in an embodiment of the present application;

[0043] FIG5 is a schematic diagram of the architecture of another deformation sensing system provided in an embodiment of the present application;

[0044] FIG6 is a schematic diagram of a flow chart of another deformation sensing method provided in an embodiment of the present application;

[0045] FIG7 is a schematic diagram of time synchronization between a BBU and an AISU according to an embodiment of the present application;

[0046] FIG8 is a schematic diagram of the architecture of another deformation sensing system provided in an embodiment of the present application;

[0047] FIG9 is a schematic diagram of a flow chart of another deformation sensing method provided in an embodiment of the present application;

[0048] FIG10 is a schematic diagram of another embodiment of the present application illustrating time synchronization between a BBU and an AISU;

[0049] FIG11 is a schematic diagram of the structure of a software phase-locked loop that implements clock synchronization through a phase detector according to an embodiment of the present application;

[0050] FIG12 is a schematic structural diagram of a deformation sensing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The embodiments provided in this application are described below with reference to the accompanying drawings.

[0052] Figure 1 shows a schematic diagram of a possible, non-limiting communication system. As shown in Figure 1 , communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200. Communication system 1000 may also include the Internet 300. RAN 100 includes at least one RAN node (e.g., 110a and 110b in Figure 1 , collectively referred to as 110) and at least one terminal device (e.g., 120a-120j in Figure 1 , collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1 ). Terminal device 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wiredly connected to core network 200. The core network devices in core network 200 and RAN node 110 in RAN 100 may be separate physical devices, or they may be a single physical device that integrates core network logical functions and radio access network logical functions.

[0053] The RAN 100 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as a 4G, 5G, or 5.5G mobile communication system, or a future-oriented evolutionary system (such as a 6G mobile communication system). The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a communication system that integrates two or more of the above systems.

[0054] RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, constitutes part of the communication system and facilitates wireless access for terminal devices. Multiple RAN nodes 110 in communication system 1000 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal device 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminal device 120j accessing RAN 100 via network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal device. RAN node 110 and terminal device 120 are sometimes referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functionality, and network elements 120a-120j can be understood as communication devices with terminal device functionality.

[0055] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a sixth-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node may be a macro base station (such as 110a in Figure 1 ), a micro base station or an indoor station (such as 110b in Figure 1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario. Alternatively, a RAN node may be a server, a wearable device, a vehicle, or an onboard device. For example, the access network device in vehicle-to-everything (V2X) technology may be a roadside unit (RSU).

[0056] In another possible scenario, multiple RAN nodes assist terminal devices in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a centralized unit-control plane (CU-CP), a centralized unit-user plane (CU-UP), or a radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0057] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called an open-centralized unit (opern-CU, O-CU), DU may also be called an open-distributed unit (opern-distributed unit, O-DU), CU-CP may also be called an open-centralized unit-control plane (open-central unit-control plane, O-CU-CP), CU-UP may also be called an open-centralized unit-user plane (open-central unit-user plane, O-CU-UP), and RU may also be called an open-radio unit (open-radio unit, O-RU). For convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0058] Terminal devices may also be referred to as terminals, user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of the present application do not limit the device form of the terminal device.

[0059] The communication between the access network device and the terminal device follows a certain protocol layer structure. The protocol layer may include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer may include at least one of the following: a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer. The user plane protocol layer may include at least one of the following: a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer.

[0060] Base stations and terminal devices can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminal devices.

[0061] The roles of base stations and terminal devices can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminal devices 120j accessing the wireless access network 100 via 120i, terminal device 120i is a base station. However, for base station 110a, 120i is a terminal device, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminal devices can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, and 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0062] In the embodiments of the present application, a base station is also referred to as an access network device. The device used to implement the functions of the access network device can be the access network device; it can also be a device that can support the access network device in implementing the functions, such as a chip system, a hardware circuit, a software module, or a hardware circuit and a software module. The device can be installed in the access network device or used in conjunction with the access network device. In the embodiments of the present application, only the device used to implement the functions of the access network device is used as an example, and the embodiments of the present application are not limited to the solutions of the embodiments of the present application.

[0063] It should be understood that the number and type of each device in the communication system shown in Figure 1 are for illustration only, and the present application is not limited to this. In actual applications, the communication system may also include more terminal devices, more access network devices, and other network elements, such as core network devices, and / or network elements for implementing artificial intelligence functions.

[0064] It is understandable that all or part of the functions implemented by one or more of the terminal equipment, access network equipment, core network equipment, or network elements for implementing artificial intelligence functions can be virtualized, that is, implemented by one or more of the proprietary processors or general-purpose processors and the corresponding software modules. Among them, since the terminal equipment and the access network equipment involve interfaces for air interface transmission, the transceiver functions of the interfaces can be implemented by hardware. Core network equipment, such as operation administration and maintenance (OAM) network elements, can be virtualized. Optionally, one or more functions of the virtualized terminal equipment, access network equipment, core network equipment, or network elements for implementing artificial intelligence functions can be implemented by cloud devices, such as cloud devices in over the top (OTT) systems.

[0065] For a long time, wireless sensing has been an independently developed technology, with no significant overlap with the development of mobile communication systems. Sensing services are provided by various specialized sensing devices, such as conventional radar, lidar, computed tomography, and magnetic resonance imaging. In 5G and earlier communication systems, positioning is the only sensing service that mobile communication systems can provide.

[0066] In 5.5G and future 6G mobile communication systems, general-purpose sensing beyond positioning will be integrated into the communication system as a new capability, opening up new services. Integrated sensing and communication (ISAC) will be implemented within a single system, enabling communication and sensing functions to complement each other. ISAC can help mobile operators offer many new services, such as high-precision positioning and tracking, biomedical and security imaging, simultaneous positioning and mapping for complex indoor and outdoor environment mapping, pollution and natural disaster monitoring, gesture and motion recognition, and defect and material detection. These new services will, in turn, create new business scenarios for future consumers and various vertical industries.

[0067] The monitoring radar mentioned in the background, such as the terrestrial microwave interference measuring instrument (IBIS-S), is an innovative synthetic aperture radar measurement system based on microwave differential interferometry. Microwave interferometry improves upon satellite and terrestrial laser scanning with improved reliability and accuracy, and can be applied to static monitoring of buildings and surfaces. Leveraging synthetic aperture radar (SAR) technology, IBIS-S can accurately monitor subtle deformations of large-scale targets from several kilometers away.

[0068] The IBIS-S monitoring system has the following features:

[0069] (1) The telemetry distance can reach 4 kilometers, without the need to install sensors in the target area or approach or enter the target object.

[0070] (2) The measurement accuracy reaches 0.1mm.

[0071] (3) It can simultaneously monitor the area within the beam coverage range (up to several square kilometers), and has the advantage of continuous spatial coverage compared with the global navigation satellite system (GNSS) and total station.

[0072] (4) Direct and real-time monitoring: by analyzing the information of a single pixel, the local displacement can be obtained.

[0073] (5) When measuring dangerous areas, disaster warnings can be issued in real time, and remote monitoring of large areas and difficult-to-access targets can be completed.

[0074] (6) The data acquisition time is short, and can be scanned once every 5 minutes.

[0075] (7) The equipment is easy to transport and install, with a high degree of automation in operation and powerful control and processing software.

[0076] However, the IBIS-S monitoring system also has the following disadvantages:

[0077] (1) The equipment is large in size, heavy (about 30 kg), expensive, and battery-powered. It cannot achieve all-weather online operation and can only be used for periodic inspection.

[0078] (2) Ground vibration caused by the passing of large vehicles or strong winds will cause the radar itself to vibrate or shake, affecting the test accuracy.

[0079] In view of this, how to achieve all-weather micro-deformation measurement with high accuracy is an urgent problem to be solved.

[0080] To this end, the present application provides a deformation sensing solution, which utilizes the existing deployed, all-weather base station equipment. The BBU transmits collection alignment information to the AISU, so that the AISU collects the displacement caused by the AAU sending the BBU's perception signal based on the collection alignment information, and sends the displacement to the BBU, so that the BBU can correct the initial deformation of the target object obtained by itself based on the displacement, overcome the interference of the external environment on the perception signal, and thus achieve all-weather small deformation measurement with high accuracy.

[0081] Figure 2 shows the architecture of a deformation sensing system according to an embodiment of the present application. System 2000 includes a BBU 201, an AAU 202, and an AISU 203. BBU 201 and AAU 202 are connected via an enhanced common public radio interface (eCPRI), and AAU 202 is also connected to AISU 203 (which is installed on AAU 202).

[0082] Exemplarily, the system 2000 can be a base station. The base station can be used to sense or monitor small deformations and realize 24 / 7 online monitoring. The base station is an existing infrastructure with a continuous network and a wide distribution. It can monitor the health of many targets (such as bridges) within the region. It requires little change to existing equipment and only requires software upgrades, so the construction cost is low. As a deformation sensing system, the base station has solved deployment-related problems (site, power supply, etc.) and can be observed for a long time without the need for on-duty supervision. The base station can report the measurement results (modified deformation amount) to the data center through the core network, which makes data collection convenient and does not require additional construction.

[0083] Figure 3 illustrates the principle of deformation sensing according to an embodiment of the present application. BBU 201 transmits a sensing signal via AAU 202. After the sensing signal reflects off a target object (e.g., a bridge), the reflected signal reaches BBU 201. BBU 201 can receive at least two reflected signals from the target object and, based on the at least two reflected signals, determine the target object's initial deformation.

[0084] In Figure 3, BBU201 sends the sensing signal for the first time, and the phase difference between the received reflected signal and the sensing signal is BBU201 sends the sensing signal for the second time. The phase difference between the received reflected signal and the sensing signal is Based on the two phase differences, the BBU201 obtains a small initial deformation Δd of the target object that satisfies the following formula 1:

[0085] Wherein, wavelength λ = c / f, c is the speed of light, and f is the central frequency of the base station.

[0086] When BBU 201 transmits sensing signals via AAU 202, the AAU antenna may be affected by the external environment (e.g., wind or vibrations from a passing train), requiring correction of the initial deformation measured by BBU 201. Therefore, BBU 201 also transmits acquisition alignment information to AISU 203 via AAU 202. This acquisition alignment information includes the offset of the sensing signal relative to the BBU's first timing signal and the sensing signal transmission period. This allows AISU 203 to acquire the displacement caused by the AAU's transmission of the sensing signal when BBU 201 transmits the sensing signal via AAU 202, and transmit this displacement to BBU 201. BBU 201 can then correct the initial deformation based on this displacement.

[0087] FIG4 is a flow chart of a deformation sensing method provided in an embodiment of the present application. The method is applied to the above-mentioned deformation sensing system. For example, the method may include the following steps:

[0088] S401. The BBU transmits acquisition alignment information to the AISU via the AAU. Correspondingly, the AISU receives the acquisition alignment information.

[0089] Before sending a sensing signal, the BBU calibrates its own clock. For example, the BBU can calibrate its internal clock using a reference time provided by a GNSS (which periodically generates a first timing signal). After calibrating its clock, the BBU transmits the sensing signal at a time domain location that is a certain offset from one of the first timing signals. The BBU can also determine the transmission period of the sensing signal.

[0090] The BBU transmits acquisition alignment information to the AISU via the AAU. This information includes the offset of the sensing signal relative to the BBU's first timing signal and the sensing signal's transmission period. This information aligns the transmission and acquisition times of the BBU and AISU.

[0091] The format of the collected alignment information may be as shown in Table 1.

[0092] The bit width of the sensing signal offset (TimingOffset) relative to the BBU's first timing signal can be 32 bits, with units in nanoseconds (ns). The bit width of the sensing signal transmission period (Tp) can be 32 bits, with units in ns. The acquisition alignment information can also include a sensing signal transmission enable indication (SensorEn). When the enable indication is "1", it indicates that the sensing signal is enabled; when the enable indication is "0", it indicates that the sensing signal is disabled.

[0093] Table 1 Schematic diagram of the format for collecting alignment information

[0094] After receiving the acquisition alignment information, the AISU can convert the offset and transmission period into multiple acquisition time points of the AISU. This is equivalent to the BBU configuring the acquisition time information to the AISU through the AAU.

[0095] "BBU transmission via AAU" refers to transmission from the BBU to the AISU via the eCPRI interface, and "AISU transmission via AAU" refers to transmission from the AISU to the BBU via the eCPRI interface. This meaning should be understood in all subsequent descriptions.

[0096] S402. The BBU sends a sensing signal via the AAU, and the target receives the sensing signal accordingly.

[0097] The format of the perception signal may refer to the prior art.

[0098] Here, the target object can be any object whose deformation needs to be measured, such as a bridge.

[0099] After the sensing signal reaches the target object, the target object can send a reflected signal. Its sensing and reflection mechanisms can refer to existing technologies.

[0100] S403. Based on the collected alignment information, the AISU collects the displacement caused by the AAU sending the perception signal.

[0101] When the BBU sends a perception signal through the AAU, since the AISU is set on the AAU and the AISU has obtained the acquisition alignment information, that is, the time domain position and period of the perception signal sent by the BBU have been obtained, the AISU can collect the displacement caused by the AAU sending the perception signal.

[0102] Specifically, the AISU can collect the displacements caused by antenna vibration when the AAU sends a sensing signal: dx(t), dy(t), and dz(t). dx(t) is the displacement in the x-direction; dy(t) is the displacement in the y-direction; and dz(t) is the displacement in the z-direction.

[0103] S404. The AISU transmits the displacement to the BBU via the AAU, and the BBU receives the displacement accordingly.

[0104] After AISU collects the displacement caused by the AAU sending the sensing signal, it transmits the displacement to BBU through AAU.

[0105] The format of the displacement may be as shown in Table 2.

[0106] Table 2 shows the format of displacement

[0107] The displacement includes the aforementioned dx(t), dy(t), and dz(t). The unit of dx(t), dy(t), and dz(t) is 0.001 mm. The displacement may also include a timestamp (timestamp), whose unit is nanoseconds.

[0108] S405: The target object sends at least two reflected signals for the sensing signal to the BBU. Correspondingly, the BBU receives at least two reflected signals for the sensing signal from the target object.

[0109] In step S402, after the BBU sends a sensing signal through the AAU, the sensing signal reaches the target object, and the target object sends a reflected signal. The BBU receives the reflected signal from the target object.

[0110] In this embodiment, the BBU sends at least two sensing signals and receives a reflection signal from the target object for each sensing signal, and receives at least two reflection signals in total.

[0111] S406. The BBU obtains an initial deformation of the target object based on the at least two reflected signals.

[0112] After the BBU sends at least two sensing signals and receives at least two reflected signals from the target, it calculates the target's initial shape according to Formula 1: mx(t), my(t), and mz(t). Here, mx(t) is the initial shape in the x-direction; my(t) is the initial shape in the y-direction; and mz(t) is the initial shape in the z-direction. mx(t), my(t), and mz(t) are functions of Δd.

[0113] S407. The BBU corrects the initial deformation based on the displacement to obtain a corrected deformation.

[0114] After the BBU obtains the displacement from the AISU and the initial deformation calculated by itself, it corrects the initial deformation based on the displacement to obtain the corrected deformation.

[0115] For example, the corrected deformation of the BBU is: Ax(t), Ay(t), and Az(t), where Ax(t) is the corrected deformation in the x-direction, Ay(t) is the corrected deformation in the y-direction, and Az(t) is the corrected deformation in the z-direction.

[0116] The corrected deformation is the difference between the initial deformation and the displacement. That is: Ax(t) = mx(t) - dx(t); Ay(t) = my(t) - dy(t); Az(t) = mz(t) - dz(t).

[0117] According to a deformation perception method provided in an embodiment of the present application, by utilizing existing deployed, all-weather base station equipment, the BBU transmits acquisition alignment information to the AISU, so that the AISU collects the displacement caused by the AAU sending the BBU's perception signal based on the acquisition alignment information, and sends the displacement to the BBU, so that the BBU can correct the initial deformation of the target object obtained by itself based on the displacement, overcome the interference of the external environment on the perception signal, and thus achieve all-weather small deformation measurement with high accuracy.

[0118] Because the AISU and BBU are two different modules, chips, or devices, they should be time synchronized before communication.

[0119] To this end, as shown in Figure 5, an embodiment of the present application also provides a deformation sensing system. This deformation sensing system 5000 includes a BBU 501, an AAU 502, and an AISU 503. The BBU 501 is connected to the AAU 502 via an eCPRI interface. The BBU 501 is also connected to a first timing module 504. The AISU 503 includes a sensor 5031 and a second timing module 5032. The AAU 502 is connected to the sensor 5031.

[0120] The first timing module 504 and the second timing module 5032 are both based on satellite signals (eg, using GNSS as a clock source) or Ethernet signals (eg, based on IEEE 1588 protocol).

[0121] The first timing module 504 generates a first timing signal. The BBU 501 calibrates the internal clock of the BBU based on the reference time provided by the first timing module 504.

[0122] The AISU 503 calibrates the clock inside the AISU based on the reference time provided by the second timing module 5032. Specifically, the sensor 5031 in the AISU 503 calibrates the clock inside the sensor based on the reference time provided by the second timing module 5032.

[0123] Among them, other functions of BBU501, AAU502 and AISU503 can be referred to the above description and will not be repeated here.

[0124] Based on the deformation sensing system shown in FIG5 , FIG6 is a flow chart of another deformation sensing method provided by an embodiment of the present application. Exemplarily, the method may include the following steps:

[0125] S600a. The BBU calibrates the internal clock of the BBU based on the reference time provided by the first timing module.

[0126] S600b. The AISU calibrates the clock inside the AISU based on the reference time provided by the second timing module.

[0127] As previously mentioned, the first timing module 504 and the second timing module 5032 are both based on satellite signals (e.g., using GNSS as a clock source) or Ethernet signals (e.g., based on IEEE 1588 protocol). Therefore, the BBU and AISU can achieve time synchronization based on satellite signals or Ethernet signals, respectively.

[0128] Figure 7 shows a schematic diagram of time synchronization between a BBU and an AISU, as illustrated in an embodiment of the present application. A first timing module (using GNSS in this example) connected to the BBU generates a first timing signal, a 1 pulse per second (1pps) signal; a second timing module (using GNSS in this example) connected to the AISU generates another timing signal, a 1pps signal. Because both the BBU and AISU calibrate their internal clocks using the reference time provided by GNSS, time synchronization between the BBU and AISU is achieved.

[0129] In Figure 7, T1 and T2 are the 1pps times generated by the GNSS connected to the BBU / AISU. The time when the BBU first transmits a sensing signal is offset from T1. The BBU calculates the offset of the sensing signal relative to 1pps. Within 1pps, the BBU can send multiple sensing signals, with a transmission period of Tp.

[0130] S601. The BBU transmits acquisition alignment information to the AISU via the AAU. Correspondingly, the AISU receives the acquisition alignment information.

[0131] The acquisition alignment information includes an offset of the sensing signal relative to the first timing signal of the BBU and a sending period of the sensing signal.

[0132] S602. The BBU sends a sensing signal via the AAU, and the target receives the sensing signal accordingly.

[0133] S603. The sensors in the AISU collect alignment information and collect the displacement caused by the AAU sending the perception signal.

[0134] S604. The AISU transmits the displacement to the BBU via the AAU, and the BBU receives the displacement accordingly.

[0135] S605: The target object sends at least two reflected signals for the sensing signal to the BBU. Correspondingly, the BBU receives at least two reflected signals for the sensing signal from the target object.

[0136] S606. The BBU obtains an initial deformation of the target object based on the at least two reflected signals.

[0137] S607. The BBU corrects the initial deformation based on the displacement to obtain a corrected deformation.

[0138] The specific implementation of the above steps S601 to S607 can refer to steps S401 to S407 of the embodiment shown in FIG4 , and will not be repeated here.

[0139] Exemplarily, the deformation sensing system may be a base station, and the displacement (i.e., antenna vibration data) collected by the sensor on the base station antenna is used to correct the measurement data of the base station, thereby improving the accuracy of the test of small deformations.

[0140] According to a deformation sensing method provided by an embodiment of the present application, using existing deployed, all-weather base station equipment, the BBU transmits collection alignment information to the AISU, so that the AISU collects the displacement caused by the AAU sending the BBU's perception signal based on the collection alignment information, and sends the displacement to the BBU, so that the BBU can correct the initial deformation of the target object obtained by itself based on the displacement, overcoming the interference of the external environment on the perception signal, thereby achieving all-weather small deformation measurement with high accuracy; both the BBU and the AISU perform clock calibration based on satellite signals or Ethernet signals, thereby improving the reliability of the data collected by the AISU.

[0141] FIG8 is a schematic diagram of the architecture of another deformation sensing system provided in an embodiment of the present application. Deformation sensing system 8000 includes a BBU 801, an AAU 802, and an AISU 803. BBU 801 is connected to AAU 802 via an eCPRI interface. BBU 801 is also connected to a third timing module 804. AISU 803 includes a sensor 8031 ​​and a fourth timing module 8032. AAU 802 is connected to sensor 8031.

[0142] The third timing module 804 is based on satellite signals (e.g., using GNSS as a clock source) or Ethernet signals (e.g., based on the IEEE 1888 protocol). The third timing module 804 generates a first timing signal. The BBU 801 calibrates its internal clock based on the reference time provided by the third timing module 804.

[0143] The fourth timing module 8032 generates the second timing signal. For example, the fourth timing module 8032 is based on a crystal oscillator in the AISU.

[0144] Among them, other functions of BBU801, AAU802 and AISU803 can be referred to the above description and will not be repeated here.

[0145] Based on the deformation sensing system shown in FIG8 , FIG9 is a flowchart of another deformation sensing method provided by an embodiment of the present application. Exemplarily, the method may include the following steps:

[0146] S900. The BBU calibrates an internal clock of the BBU based on a reference time provided by the third timing module.

[0147] Figure 10 shows another example of time synchronization between a BBU and an AISU, according to an embodiment of the present application. A first timing module (using a GNSS in this example) connected to the BBU generates a first timing signal, a 1pps signal. T1 and T2 are the 1pps times generated by the GNSS connected to the BBU. The BBU calibrates its internal clock based on the reference time provided by the GNSS.

[0148] S901. The BBU sends a first timing signal to the AISU via the AAU. Correspondingly, the AISU receives the first timing signal.

[0149] After the BBU obtains the first timing signal, it sends the first timing signal to the AISU via the AAU. The first timing signal includes the above-mentioned T1.

[0150] S902. The AISU obtains phase relationship information between the second timing signal and the first timing signal.

[0151] The fourth timing module 8032 in the AISU generates a second timing signal.

[0152] After receiving the first timing signal from the BBU, the AISU can obtain the phase relationship information between the second timing signal and the first timing signal. This phase relationship information can also be called the phase detection value N(t).

[0153] S903. The AISU sends the phase relationship information to the BBU via the AAU. Correspondingly, the BBU receives the phase relationship information.

[0154] Exemplarily, the AISU periodically (e.g., every 1 second) sends the above phase relationship information to the BBU through the eCPRI interface.

[0155] S904. The BBU obtains phase compensation information based on the first timing signal and the phase relationship information.

[0156] After receiving the phase relationship information from the AISU, the BBU obtains phase compensation information based on its own first timing signal and the received phase relationship information.

[0157] Exemplarily, the BBU may calculate the phase compensation information by using algorithms such as filtering and averaging.

[0158] S905. The BBU sends phase compensation information to the AISU via the AAU. Correspondingly, the AISU receives the phase compensation information.

[0159] S906. The AISU performs time synchronization with the BBU based on the phase compensation information.

[0160] After receiving the phase compensation information from the BBU, the AISU can perform time synchronization with the BBU based on the phase compensation information.

[0161] Figure 11 shows a schematic diagram of a software phase-locked loop (PLL) that uses a phase detector to achieve clock synchronization, according to an embodiment of the present application. The software PLL includes the following modules: a phase detector, a digital-to-analog converter (DAC), a crystal oscillator (such as an oven-controlled crystal oscillator (OCXO)), software filtering, and frequency division.

[0162] The purpose of the "phase detection" is to use a standard 1pps signal to count the 1pps second signal output by the local clock crystal oscillator. The result of the counting is the phase detection value.

[0163] After obtaining the phase-locked value, the software filter calculates the frequency deviation of the local crystal oscillator's output clock from the standard 1 pps using algorithm parameters. Based on this frequency deviation, the corresponding DAC device value is calculated and written to the DAC. This value written to the DAC is the digital-to-analog (DA) value. After the DAC converts the DA value, it outputs a voltage that controls the OCXO, thereby controlling the OCXO's output frequency.

[0164] The calculation method of DA value is as follows:

[0165] Crystal oscillator control sensitivity = crystal oscillator frequency adjustable range / DA value adjustable range.

[0166] Crystal Oscillator Control Sensitivity: This indicates how much the crystal oscillator changes with the DA value. For example, for a 10MHz crystal oscillator with a crystal control sensitivity of 0.00065Hz / bit, an increase or decrease in the DA value by 1 will increase or decrease the output frequency by 0.00065Hz. This value is measured at the factory.

[0167] DA value adjustable range: The difference between the maximum and minimum software DA values. For example, for a 16-bit DAC, its DA adjustable range is (65520–255) = 65265.

[0168] Adjustable crystal frequency range: In the example above, the adjustable range of the crystal is approximately (65265 * 0.00065) 42Hz. Therefore, the system clock range is approximately 10MHz ± 20Hz. That is, when the DA value is 255, the system clock is 10MHz - 20Hz, and when the DA value is 65520, the system clock is 10MHz + 20Hz.

[0169] S907. The BBU transmits the acquisition alignment information to the AISU via the AAU. Correspondingly, the AISU receives the acquisition alignment information.

[0170] The acquisition alignment information includes an offset of the sensing signal relative to the first timing signal of the BBU and a sending period of the sensing signal.

[0171] S908. The BBU sends a sensing signal via the AAU, and the target receives the sensing signal accordingly.

[0172] S909. The sensors in the AISU collect alignment information and the displacement caused by the AAU sending the perception signal.

[0173] S910. The AISU transmits the displacement to the BBU via the AAU. Correspondingly, the BBU receives the displacement.

[0174] S911. The target object sends at least two reflected signals for the sensing signal to the BBU. Correspondingly, the BBU receives at least two reflected signals for the sensing signal from the target object.

[0175] S912. The BBU obtains an initial deformation of the target object based on the at least two reflected signals.

[0176] S913. The BBU corrects the initial deformation based on the displacement to obtain a corrected deformation.

[0177] The specific implementation of the above steps S907 to S913 can refer to steps S401 to S407 of the embodiment shown in FIG4 , and will not be repeated here.

[0178] Exemplarily, the deformation sensing system may be a base station, and the displacement (i.e., antenna vibration data) collected by the sensor on the base station antenna is used to correct the measurement data of the base station, thereby improving the accuracy of the test of small deformations.

[0179] According to a deformation sensing method provided by an embodiment of the present application, using existing deployed, all-weather base station equipment, the BBU transmits collection alignment information to the AISU, so that the AISU collects the displacement caused by the AAU sending the BBU's perception signal based on the collection alignment information, and sends the displacement to the BBU, so that the BBU can correct the initial deformation of the target object obtained by itself based on the displacement, overcoming the interference of the external environment on the perception signal, thereby achieving all-weather small deformation measurement with high accuracy; the BBU performs clock calibration based on satellite signals or Ethernet signals, and the AISU synchronizes time with the BBU based on the phase compensation information sent by the BBU, thereby improving the reliability of the data collected by the AISU.

[0180] It will be appreciated that this application uses the BBU and AISU as examples of the execution entities of the interaction diagrams, but this application does not limit the execution entities of the interaction diagrams. For example, the BBU in the method provided in this application may also be a chip, chip system, or processor applied to the BBU, or a logical node, logic module, or software that can implement all or part of the functions of the BBU; the AISU in the method provided in this application may also be a chip, chip system, or processor applied to the AISU, or a logical node, logic module, or software that can implement all or part of the functions of the AISU.

[0181] In this application, when entity A sends information to entity B, A may send it directly to B or indirectly to B through other entities. Similarly, when entity B receives information from entity A, entity B may directly receive the information sent by entity A or indirectly receive the information sent by entity A through other entities.

[0182] It will be understood that in each of the above embodiments, the methods and / or steps implemented by the BBU may also be implemented by components (such as chips or circuits) that can be used for the BBU; and the methods and / or steps implemented by the AISU may also be implemented by components (such as chips or circuits) that can be used for the AISU.

[0183] The above description primarily describes the solutions provided by the embodiments of the present application from the perspective of the interaction between the BBU and the AISU. Accordingly, the embodiments of the present application also provide a deformation sensing device, which is used to implement the various methods described above. The deformation sensing device can be the BBU described in the method embodiments described above, or a component that can be used with a BBU; alternatively, the deformation sensing device can be the AISU described in the method embodiments described above, or a component that can be used with an AISU. It will be understood that, to implement the aforementioned functions, the deformation sensing device includes hardware structures and / or software modules corresponding to each function. Those skilled in the art will readily appreciate that, in conjunction with the various exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Professionals may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0184] In the embodiment of the present application, the functional modules of the deformation sensing device can be divided according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0185] Based on the same concept of the above deformation sensing method, this application also provides the following deformation sensing device:

[0186] As shown in Figure 12, it is a schematic diagram of the structure of a deformation sensing device provided in an embodiment of the present application, and the deformation sensing device 1200 includes a processor 1201. Optionally, the deformation sensing device 1200 may further include an interface circuit 1202 (indicated by a dotted line in the figure), and the processor 1201 and the interface circuit 1202 are coupled to each other. It is understandable that the interface circuit 1202 can be a transceiver or an input and output interface. Optionally, the deformation sensing device 1200 may further include a memory 1203 (indicated by a dotted line in the figure), and the memory 1203 is used to store instructions executed by the processor 1201, or to store input data required for the processor 1201 to run instructions, or to store data generated after the processor 1201 runs instructions.

[0187] When the deformation sensing device is used to implement the function of the BBU in the above-mentioned method embodiment, the interface circuit 1202 is configured to transmit acquisition alignment information to the AISU via the AAU, where the acquisition alignment information includes an offset of a sensing signal relative to a first timing signal of the BBU and a transmission period of the sensing signal; the interface circuit 1202 sends the sensing signal via the AAU; the interface circuit 1202 receives a displacement from the AISU via the AAU, where the displacement is a displacement caused by the AISU acquiring the sensing signal sent by the AAU based on the acquisition alignment information; the interface circuit 1202 receives at least two reflected signals from a target object in response to the sensing signal; the processor 1201 obtains an initial deformation of the target object based on the at least two reflected signals; and the processor 1201 corrects the initial deformation based on the displacement to obtain a corrected deformation.

[0188] Optionally, the BBU and the AISU are time synchronized.

[0189] Optionally, the BBU is also connected to a first timing module, which is based on a satellite signal or an Ethernet signal; the processor 1201 calibrates the clock inside the BBU based on the reference time provided by the first timing module, wherein the first timing signal is generated by the first timing module.

[0190] Optionally, the BBU is further connected to a third timing module, where the third timing module is based on a satellite signal or an Ethernet signal. The processor 1201 calibrates a clock within the BBU based on a reference time provided by the third timing module, where the first timing signal is generated by the third timing module. The interface circuit 1202 sends the first timing signal to the AISU via the AAU. The interface circuit 1202 receives phase relationship information between a second timing signal from the AISU and the first timing signal via the AAU, where the second timing signal is generated by a fourth timing module in the AISU, where the fourth timing module is based on a crystal oscillator in the AISU. The processor 1201 obtains phase compensation information based on the first timing signal and the phase relationship information. The interface circuit 1202 sends the phase compensation information to the AISU via the AAU.

[0191] Optionally, the corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

[0192] When the deformation sensing device is used to implement the function of the AISU in the above-mentioned method embodiment, the interface circuit 1202 receives acquisition alignment information connected to the BBU through the AAU, where the acquisition alignment information includes the offset of the perception signal relative to the first timing signal of the BBU and the transmission period of the perception signal; the processor 1201 collects the displacement caused by the AAU sending the perception signal based on the acquisition alignment information; and the interface circuit 1202 transmits the displacement to the BBU through the AAU.

[0193] Optionally, the AISU includes a sensor; the sensor collects the displacement caused by the AAU sending the perception signal based on the collected alignment information.

[0194] Optionally, the AISU is time synchronized with the BBU.

[0195] Optionally, the AISU further includes a second timing module connected to the sensor, and the second timing module is based on a satellite signal or an Ethernet signal; the processor 1201 calibrates the internal clock of the AISU based on the reference time provided by the second timing module.

[0196] Optionally, the AISU further includes a fourth timing module connected to the sensor, where the fourth timing module is based on a crystal oscillator in the AISU; the interface circuit 1202 receives the first timing signal from the BBU through the AAU; the processor 1201 obtains phase relationship information between a second timing signal and the first timing signal, where the second timing signal is generated by the fourth timing module; the interface circuit 1202 sends the phase relationship information to the BBU through the AAU; the interface circuit 1202 receives phase compensation information from the BBU through the AAU, where the phase compensation information is obtained by the BBU based on the first timing signal and the phase relationship information; and the processor 1201 performs time synchronization with the BBU based on the phase compensation information.

[0197] Optionally, the corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

[0198] When the deformation sensing device is a chip implemented in a BBU, the chip implements the BBU functionality described in the method embodiments. The chip receives information from other modules in the BBU (e.g., a radio frequency module or antenna), which is information sent by the AAU to the BBU; or sends information to other modules in the BBU (e.g., a radio frequency module or antenna), which is information sent by the BBU to the AAU.

[0199] When the deformation sensing device is a chip implemented in an AISU, the chip implements the AISU functionality described in the aforementioned method embodiments. The chip receives information from other modules in the AISU (e.g., a radio frequency module or antenna), which is information sent by the AAU to the AISU; or the chip sends information to other modules in the AISU (e.g., a radio frequency module or antenna), which is information sent by the AISU to the AAU.

[0200] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0201] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method in the above embodiment is implemented.

[0202] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method in the above embodiment.

[0203] An embodiment of the present application also provides a deformation sensing system, including the above-mentioned deformation sensing device.

[0204] The present application also provides a circuit, which is coupled to a memory and is used to execute the method shown in the above embodiment. The circuit may include a chip circuit.

[0205] An embodiment of the present application also provides a chip device, including a processor, for calling a computer program or computer instruction stored in the memory so that the processor executes the method provided in any one of the embodiments shown in Figures 4, 6, and 9 above.

[0206] In one possible implementation, the input of the chip device corresponds to the receiving operation in any one of the embodiments shown in Figures 4, 6, and 9 above, and the output of the chip device corresponds to the sending operation in any one of the embodiments shown in Figures 4, 6, and 9 above.

[0207] Optionally, the processor is coupled to the memory via an interface.

[0208] Optionally, the chip device further includes a memory, in which computer programs or computer instructions are stored.

[0209] It should be noted that the above units or one or more of the units can be implemented by software, hardware, or a combination of the two. When any of the above units or units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow.

[0210] In this application, a processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in this application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in this application may be directly executed by a hardware processor, or by a combination of hardware and software modules within the processor.

[0211] When the above units or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0212] Optionally, an embodiment of the present application further provides a chip system, comprising: at least one processor and an interface, wherein the at least one processor is coupled to a memory via the interface, and when the at least one processor executes a computer program or instruction in the memory, the chip system executes the method in any of the above method embodiments. Optionally, the chip system may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

[0213] The memory in the present application may also be a circuit or any other device capable of implementing a storage function for storing program instructions and / or data. A memory is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. For example, the memory may be a non-volatile memory, such as a digital versatile disc (DVD), a hard disk drive (HDD), or a solid-state drive (SSD), or a volatile memory, such as a random-access memory (RAM).

[0214] It is understood that, in this application, "indication" can include direct indication, indirect indication, explicit indication, and implicit indication. When describing a certain indication information as indicating A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A. In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or an index of the information to be indicated, or it can be indirectly indicated by indicating other information, where there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the rest of the information to be indicated is known or agreed in advance. For example, it is also possible to indicate specific information by using a pre-agreed (e.g., protocol-specified) order of arrangement of various information, thereby reducing the indication overhead to a certain extent. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in this application. The sending period and / or sending timing of these sub-information may be predefined, for example, predefined according to a protocol, or may be configured by the transmitting end device by sending configuration information to the receiving end device.

[0215] The at least one (item) involved in this application indicates one (item) or more (items). More than one (item) refers to two (items) or more than two (items). "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. In addition, it should be understood that although the terms first, second, etc. may be used to describe each object in this application, these objects should not be limited to these terms. These terms are only used to distinguish each object from each other.

[0216] The terms "including" and "having" mentioned above and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any method or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other methods or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0217] A network element in the deformation sensing system can send a signal to another network element or receive a signal from another network element. The signal may include information, signaling or data, etc. The network element can also be replaced by an entity, a network entity, a device, a terminal device, a communication module, a node, a communication node, etc. The present application describes the network element as an example. For example, the deformation sensing system may include at least one terminal device and at least one network device. The network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the network device. In addition, it can be understood that if the deformation sensing system includes multiple terminal devices, multiple terminal devices can also send signals to each other, that is, the signal sending network element and the signal receiving network element can both be terminal devices.

[0218] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0219] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0220] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0221] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0222] The components in the device of the embodiment of the present application can be merged, divided, or deleted according to actual needs. Those skilled in the art can combine or combine the different embodiments and features of the different embodiments described in this specification.

[0223] In this application, under the premise of no logical contradiction, the examples can reference each other, for example, the methods and / or terms between method embodiments can reference each other, for example, the functions and / or terms between device embodiments can reference each other, for example, the functions and / or terms between device examples and method examples can reference each other.

Claims

1. A deformation perception method, characterized in that: The method is applied to a baseband unit (BBU), wherein the BBU is connected to an active antenna unit (AAU), and the AAU is connected to an antenna information sensing unit (AISU). The method includes: The BBU transmits acquisition alignment information to the AISU through the AAU, where the acquisition alignment information includes an offset of a sensing signal relative to a first timing signal of the BBU and a transmission period of the sensing signal; The BBU sends the perception signal through the AAU; The BBU receives a displacement from the AISU through the AAU, where the displacement is a displacement caused by the AISU collecting the sensing signal sent by the AAU based on the acquisition alignment information; The BBU receives at least two reflected signals from the target object in response to the sensing signal; The BBU obtains an initial deformation amount of the target object based on the at least two reflected signals; The BBU corrects the initial deformation based on the displacement to obtain a corrected deformation.

2. The method according to claim 1, wherein The method further comprises: The BBU and the AISU perform time synchronization.

3. The method according to claim 2, wherein The BBU is also connected to a first timing module, which is based on a satellite signal or an Ethernet signal; The BBU and the AISU perform time synchronization, including: The BBU calibrates a clock inside the BBU based on a reference time provided by the first timing module, wherein the first timing signal is generated by the first timing module.

4. The method according to claim 2, wherein The BBU is also connected to a third timing module, which is based on satellite signals or Ethernet signals; The BBU and the AISU perform time synchronization, including: The BBU calibrates a clock inside the BBU based on a reference time provided by the third timing module, wherein the first timing signal is generated by the third timing module; The BBU sends the first timing signal to the AISU through the AAU; The BBU receives, through the AAU, phase relationship information between a second timing signal from the AISU and the first timing signal, where the second timing signal is generated by a fourth timing module in the AISU, and the fourth timing module is based on a crystal oscillator in the AISU; The BBU obtains phase compensation information based on the first timing signal and the phase relationship information; The BBU sends the phase compensation information to the AISU through the AAU.

5. The method according to any one of claims 1 to 4, wherein The corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

6. A deformation perception method, characterized in that: The method is applied to an antenna information sensing unit (AISU), wherein the AISU is connected to a baseband unit (BBU) via an active antenna unit (AAU). The method comprises: The AISU receives, through the AAU, acquisition alignment information connected to the BBU, where the acquisition alignment information includes an offset of a sensing signal relative to a first timing signal of the BBU and a transmission period of the sensing signal; The AISU collects, based on the collected alignment information, a displacement caused by the AAU sending the sensing signal; The AISU transmits the displacement to the BBU through the AAU.

7. The method according to claim 6, wherein The AISU includes a sensor; The sensor collects the displacement caused by the AAU sending the sensing signal based on the collected alignment information.

8. The method according to claim 7, wherein The method further comprises: The AISU and the BBU perform time synchronization.

9. The method according to claim 8, wherein The AISU further includes a second timing module connected to the sensor, wherein the second timing module is based on a satellite signal or an Ethernet signal; The AISU and the BBU perform time synchronization, including: The AISU calibrates a clock inside the AISU based on a reference time provided by the second timing module.

10. The method according to claim 8, wherein The AISU further includes a fourth timing module connected to the sensor, the fourth timing module being based on a crystal oscillator in the AISU; The AISU and the BBU perform time synchronization, including: The AISU receives the first timing signal from the BBU through the AAU; The AISU obtains phase relationship information between a second timing signal and the first timing signal, where the second timing signal is generated by the fourth timing module; The AISU sends the phase relationship information to the BBU through the AAU; The AISU receives phase compensation information from the BBU through the AAU, where the phase compensation information is obtained by the BBU based on the first timing signal and the phase relationship information; The AISU performs time synchronization with the BBU based on the phase compensation information.

11. The method according to any one of claims 6 to 10, wherein: The corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

12. A deformation sensing method, characterized in that: The method is applied to a deformation sensing system, which includes a baseband unit (BBU), an active antenna unit (AAU) connected to the BBU, and an antenna information sensing unit (AISU) connected to the AAU. The method includes: The BBU transmits acquisition alignment information to the AISU through the AAU, where the acquisition alignment information includes an offset of a sensing signal relative to a first timing signal of the BBU and a transmission period of the sensing signal; The BBU sends the perception signal through the AAU; The AISU collects, based on the collected alignment information, a displacement caused by the AAU sending the sensing signal; The AISU transmits the displacement to the BBU via the AAU; The BBU receives at least two reflected signals from the target object in response to the sensing signal; The BBU obtains an initial deformation amount of the target object based on the at least two reflected signals; The BBU corrects the initial deformation based on the displacement to obtain a corrected deformation.

13. The method according to claim 12, wherein: The AISU includes a sensor; The sensor collects the displacement caused by the AAU sending the sensing signal based on the collected alignment information.

14. The method according to claim 13, wherein The method further comprises: The BBU and the AISU perform time synchronization.

15. The method according to claim 14, wherein The deformation sensing system further includes a first timing module connected to the BBU, and the AISU further includes a second timing module connected to the sensor, wherein the first timing module and the second timing module are both based on satellite signals or Ethernet signals; The BBU and the AISU perform time synchronization, including: The BBU calibrates a clock inside the BBU based on a reference time provided by the first timing module, wherein the first timing signal is generated by the first timing module; The AISU calibrates a clock inside the AISU based on a reference time provided by the second timing module.

16. The method according to claim 14, wherein The deformation sensing system further includes a third timing module connected to the BBU, and the AISU further includes a fourth timing module connected to the sensor, wherein the third timing module is based on a satellite signal or an Ethernet signal, and the fourth timing module is based on a crystal oscillator in the AISU; The BBU and the AISU perform time synchronization, including: The BBU calibrates a clock inside the BBU based on a reference time provided by the third timing module, wherein the first timing signal is generated by the third timing module; The BBU sends the first timing signal to the AISU through the AAU; The AISU obtains phase relationship information between a second timing signal and the first timing signal, where the second timing signal is generated by the fourth timing module; The AISU sends the phase relationship information to the BBU through the AAU; The BBU obtains phase compensation information based on the first timing signal and the phase relationship information; The BBU sends the phase compensation information to the AISU through the AAU; The AISU performs time synchronization with the BBU based on the phase compensation information.

17. The method according to any one of claims 12 to 16, wherein: The corrected deformation amount is the difference between the initial deformation amount and the displacement amount.

18. A deformation sensing device, characterized in that: The method comprises a unit for implementing the method according to any one of claims 1 to 5, or comprises a unit for implementing the method according to any one of claims 6 to 11.

19. A deformation sensing system, characterized in that: The deformation sensing system includes a baseband unit (BBU), an active antenna unit (AAU) connected to the BBU, and an antenna information sensing unit (AISU) connected to the AAU; The BBU is used to implement the method according to any one of claims 1 to 5; The AISU is used to implement the method according to any one of claims 6 to 11.

20. A deformation sensing device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 5 when executing the computer program, or implements the method according to any one of claims 6 to 11 when executing the computer program.

21. A chip, characterized in that: The chip is used to execute the method according to any one of claims 1 to 5, or to execute the method according to any one of claims 6 to 11.

22. A chip module, characterized in that: The method comprises an interface component and a chip, wherein the chip is used to execute the method according to any one of claims 1 to 5, or to execute the method according to any one of claims 6 to 11.

23. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the deformation sensing device, the method according to any one of claims 1 to 5 or the method according to any one of claims 6 to 11 is implemented.

24. A computer program product comprising instructions, characterized in that When the instruction is executed on a deformation sensing device, the deformation sensing device is caused to execute the method according to any one of claims 1 to 11.

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