Data synchronization charging bin for wireless sensor network

Abstract

The invention relates to a data synchronization charging bin for a wireless sensor network, which comprises a data synchronization bin body structure and a data synchronization control system, the data synchronization bin body structure is provided with a plurality of grooves in a data synchronization bin body, and each groove is used for placing a wireless sensor. A charging and communication interface of the wireless sensor adopts a magnetic suction connector form, a shell of the data synchronization bin body is provided with a display screen, a control key and an indicator lamp, and the data synchronization bin is externally provided with a gigabit network communication interface; the data synchronization control module comprises an ARM main control module, a storage module, a communication module, a Beidou time service module and a power management module. According to the data synchronization charging bin for the wireless sensor network, rapid data collection and centralized charging of nodes of the wireless sensor network can be achieved, and meanwhile system time correction and synchronization of all the nodes in the wireless sensor network are completed.

Description

Technical Field

[0001] The present invention relates to a wireless sensor integration device, in particular to a data synchronization charging compartment, which can realize centralized data export, clock synchronization and synchronous charging of multiple nodes in a wireless sensor network. Background Art

[0002] With the development of science and technology and the improvement of automation, higher and higher requirements are placed on the stability and reliability of engineering equipment. In engineering applications, wired sensors are widely used to monitor the status of mechanical equipment and improve the stability of system operation. The wiring scheme for wired sensor monitoring needs to comprehensively consider the impact of the complex environment around the equipment and has relatively strict requirements on the installation environment. Due to the limitations of cables, wired sensors are difficult to deploy safely and reliably near rotating equipment or in narrow, enclosed spaces. In addition, the quality of the cable itself and the stability of the wiring scheme are directly related to whether the sensor can monitor effectively in the long term.

[0003] In response to the above problems of wired sensors, a solution of building distributed, wireless communication wireless sensor networks (WSNs) has been proposed in recent years. Wireless sensor networks achieve real-time online monitoring of equipment through multiple intelligent sensor nodes, and have the advantages of flexible deployment and high dynamic expansion. The use of wireless sensor networks can effectively reduce the cost and man-hours of on-site wiring. The nodes of wireless sensor networks are small in size and can be installed in small and confined spaces where wiring is difficult. In addition, the small size, distributed and relatively low cost of wireless sensors greatly improve the flexibility and scalability of equipment monitoring solutions. They can be applied to monitoring scenarios with a large number of devices, a wide distribution range, large discrete measurement points, and even frequent movement. At the same time, the traditional wired sensor monitoring solution uses the core processor of the monitoring device to centrally process the data of multiple channel sensors connected, and the pressure of calculation, communication, and storage processes is concentrated on a single core processor. Through the distributed wireless sensor network, each network node can perform parallel calculations and achieve load balancing.

[0004] Due to the limited size, wireless sensor network nodes usually use batteries with limited capacity to maintain system power supply, and their performance and communication bandwidth are subject to certain constraints. Therefore, early wireless sensor networks were mostly used to measure slowly varying signals with very little data, such as temperature and humidity. Monitoring mechanical equipment through wireless sensor networks requires the collection and analysis of dynamic signals such as wide-band vibration and noise. Therefore, there are still the following key issues in realizing the status monitoring of mechanical equipment based on wireless sensor networks:

[0005] In order to collect dynamic signals such as high-frequency vibration and noise, it is necessary to increase the sampling rate of wireless sensor nodes. The computing, storage and communication loads of each node will increase accordingly. The power consumption and storage pressure of the corresponding overall monitoring system will increase greatly, which will significantly shorten the working time of the battery supporting the system with limited capacity. Regularly replacing the battery for each wireless sensor node is quite cumbersome. It is necessary to seek solutions to the energy consumption and storage problems of wireless sensor networks with high-speed collection.

[0006] A certain amount of local storage space is reserved inside the wireless sensor node. Due to the limited communication bandwidth of the wireless sensor network, only key feature information is usually transmitted between sensor nodes in the long-term monitoring state. The reserved local storage can be used to cache data that has not been successfully uploaded when the communication is blocked, and to store the original data within a certain period of time at a configurable time interval for in-depth data analysis. However, due to the large amount of vibration and noise data collected and the large number of network nodes, how to quickly collect the large amount of data stored in the wireless sensor network has become a problem that needs to be solved.

[0007] Wireless sensor nodes have the function of collecting data at fixed time intervals, and the data stored in wireless sensor nodes will record the system time when the data was collected as a timestamp. Therefore, the accuracy of the long-term operation of the internal system time of wireless sensor nodes is crucial, and it is necessary to realize the system time correction and synchronization of each node in the wireless sensor network. Summary of the invention

[0008] The present invention provides a data synchronization charging warehouse for wireless sensor networks, which is used to solve the key problems existing in the application of wireless sensor networks in wide-band dynamic signal scenarios such as vibration and noise, realize the rapid data collection and centralized charging of wireless sensor network nodes, and complete the system time correction and synchronization of each node in the wireless sensor network.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows:

[0010] A data synchronization charging warehouse for a wireless sensor network comprises a data synchronization warehouse body structure and a data synchronization control system. The data synchronization warehouse body structure has a plurality of grooves on the data synchronization warehouse body, each groove is used to place a wireless sensor, the charging and communication interface of the wireless sensor adopts a magnetic suction connector, and the data synchronization warehouse body shell is equipped with a display screen, control buttons and indicator lights. The display screen is used to display the power level of each inserted wireless sensor, the remaining storage capacity and the data export progress, and the control button is used to enable the wireless sensor to export data; the data synchronization warehouse is provided with a gigabit network communication interface for connecting with a host computer and a server terminal, and data transfer or data interception analysis is performed through the control of the host computer and the server terminal, and the indicator lights are used to indicate whether the wireless sensor node charging is completed and whether the data export is completed; the data synchronization control The control module includes an ARM main control module, a storage module, a communication module, a Beidou timing module and a power management module. Among them, the data synchronization warehouse uses an external 220V power supply as power supply, and the power management module is used to identify whether each charging power supply of the data synchronization warehouse has current output to the wireless sensor load to determine the access status of the wireless sensor; the ARM main control module is used to read the access of each wireless sensor node, and use the Beidou timing module to send the PPS second pulse synchronization signal and the absolute time information corresponding to the second pulse signal to the connected wireless sensor node, so as to realize the time synchronization of the wireless sensor node; the communication module communicates with the connected wireless sensor node and the host computer and server terminal through the PHY chip; the storage module is composed of multiple solid-state hard drives in the form of raid5 to form a disk array, and a part of the redundant space is used to ensure the security of the data.

[0011] Furthermore, a wireless sensor is placed in the groove of the data synchronization warehouse body through a guide rail positioning structure to ensure that the installation position of the wireless sensor is accurate and reliably fixed. At the same time, the guide rail structure is used to achieve active anti-mismatching and prevent the wireless sensor from charging and reverse connection of the communication interface.

[0012] Furthermore, the charging and communication interface of the wireless sensor adopts a magnetic connector, which is a 6-pin interface, of which 2 pins are used for power charging and 4 pins are used for 100M network communication.

[0013] Furthermore, the indicator light has three colors, among which the charging indicator light and the data export indicator light are both red after the wireless sensor is connected, when charging is completed, the charging indicator light turns green, and after data synchronization is completed, the indicator light turns blue.

[0014] Furthermore, when the host computer and the server terminal are connected, the ARM main control module transfers the data through the communication module, and uses the host computer and the server terminal to analyze the data of the concerned measuring points and concerned time periods.

[0015] Furthermore, when the user controls the button to start the wireless sensor node to export data, a network communication connection is established between the ARM main control module and the wireless sensor node to write the measurement data requested to be stored into the storage module.

[0016] Furthermore, the data synchronization control module has a synchronization database, which stores data in time series and at different measuring points to facilitate data management and query. In the process of acquiring data and writing it into the synchronization database, a data verification and encryption transmission mechanism is used to ensure that the acquired data is safe and reliable.

[0017] Furthermore, the data synchronization control module is connected to the host computer for management and data analysis.

[0018] Furthermore, the data synchronization control module is connected to a display screen to display the long-term trend graphs of the speed passband values ​​and main frequency amplitude characteristic signals recorded by each wireless sensor measuring point. The user can selectively select time series data that are representative or have analytical value based on the trend graph, and then export the time series data within the time period based on the selected data distribution time period, thereby effectively ensuring the practicality of the extracted data.

[0019] The beneficial effects of the present invention are:

[0020] 1. According to the present invention, based on the different parameters such as sampling frequency, collection duration, collection interval and collection characteristic information set by the wireless sensor node, the wireless sensor node that collects dynamic signals such as high-frequency vibration and noise has a higher power consumption and will issue a low-battery warning after a period of time. At this time, multiple wireless sensors can be charged uniformly through the data synchronization exchange warehouse, which can avoid charging or replacing batteries for each node one by one.

[0021] 2. According to the present invention, the data synchronization warehouse can be used to synchronously export the original data stored in multiple wireless sensors connected to the warehouse, which can avoid point-to-point data copying and effectively reduce the time spent on collecting data in the wireless sensor network. The exported data has a timestamp and wireless sensor network node ID, and the stored data can be matched with the measurement time and the measurement point location. It can collect more information-rich original data and more feature information, providing data support for further in-depth analysis of mechanical equipment monitored by the wireless sensor network.

[0022] 3. According to the present invention, after the wireless sensor is connected to the data synchronization warehouse, the remaining power and remaining storage space of the sensor can be displayed through the display screen on the data synchronization warehouse. During the charging and data export process of the wireless sensor, the display screen can display the progress of charging and data export in real time, and the indicator light can be used to observe whether the charging and data export are completed.

[0023] 4. According to the present invention, the data synchronization charging warehouse can be connected to the host computer through a wired network. When the monitoring system finds that key characteristics such as the vibration intensity of a certain equipment are abnormal, the host computer software can be used to select the measurement points and time periods of interest, and intercept the original data near the abnormal time point for further analysis, which can effectively help locate the cause of the equipment failure.

[0024] 5. According to the present invention, the system time of the wireless sensor node will deviate as the node runs for a long time. The data synchronization charging warehouse can use the Beidou timing module to correct the system time deviation of the wireless sensor. When the wireless sensor is connected to the data synchronization charging warehouse, the charging warehouse will automatically send a second pulse synchronization signal and synchronization time information, thereby realizing the stability of the wireless sensor network's periodic collection function and the accurate timestamp of the recorded data. After the time calibration is completed, the results will be displayed on the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of the appearance of the data synchronization charging bin of the present invention;

[0026] Figure 2 yes Figure 1 A top view of

[0027] Figure 3 It is a schematic diagram of the functional interface of the data synchronization charging warehouse of the present invention;

[0028] Figure 4 It is a logic block diagram of the data synchronization charging warehouse program of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1 As shown in FIG2 , a data synchronization charging warehouse for a wireless sensor network of the present invention includes: a data synchronization warehouse body structure and a data synchronization control module.

[0031] Data synchronization warehouse body structure: Multiple grooves (wireless sensor node access interface 3) are opened on the data synchronization warehouse body, each groove is used to place a wireless sensor, and the guide rail positioning structure in the groove ensures that the wireless sensor is placed in the correct position and reliably fixed. At the same time, the guide rail structure is used to implement active anti-fool design to prevent the wireless sensor charging and communication interface from being reversed. The charging and communication interface of the wireless sensor adopts the form of a magnetic suction connector 4, which is a 6-pin interface, of which 2 pins are used for power charging and 4 pins are used for 100M network communication. The interface definition is shown in Table 1.

[0032] The data synchronization warehouse body shell is equipped with a display screen 1, control buttons 5 and indicator lights (including a charging status indicator light 6 and a data synchronization status indicator light 7). The display screen 1 is used to display the power level of each inserted wireless sensor, the remaining storage capacity and the data export progress. The control buttons are used to enable the wireless sensor to export data.

[0033] The data synchronization warehouse is equipped with a gigabit network communication interface 2 for connecting to terminals such as PCs and servers. Data can be transferred or intercepted and analyzed through the host computer control. The indicator light is used to indicate whether the wireless sensor node is fully charged and whether the data export is completed. After the wireless sensor is connected, the charging indicator light and the data export indicator light are both red. When charging is completed, the charging indicator light turns green. After data synchronization is completed, the indicator light turns blue. The schematic diagram of the appearance of the data synchronization charging warehouse and the schematic diagram of the functional interface of the data synchronization charging warehouse are shown in the figure below. Figure 1 , 2 and Figure 3 shown.

[0034] Table 1 Pin definition of magnetic contact interface

[0035]

[0036] The data synchronization control module includes an ARM main control module, a storage module, a communication module, a Beidou timing module, and a power management module. The data synchronization warehouse uses an external 220V power supply as power supply. The power management module determines the access status of the wireless sensor by identifying whether each charging power supply has current output to the wireless sensor load through the power management module. After reading that a wireless sensor node is connected, the ARM main control module uses the Beidou timing module to send the PPS second pulse synchronization signal and the absolute time information corresponding to the second pulse signal to the connected wireless sensor node, thereby realizing the time synchronization of the wireless sensor node. The communication module of the data synchronization warehouse communicates with the connected wireless sensor node and terminals such as PC through the PHY chip. When the user controls the button to start the wireless sensor node to export data, the ARM main control module establishes network communication with the wireless sensor node, requests the stored measurement data from it, and then writes the data to the storage module. The storage module of the data synchronization warehouse is composed of multiple solid-state hard drives in the form of raid5 to form a disk array, and uses a part of redundant space to ensure data security. When a terminal host computer such as a PC is connected, the ARM main control module can transfer data through the communication module, and can use the host computer software to analyze the data of the measurement points and time periods of interest.

[0037] The data synchronization control module is designed according to the hardware function module of the data synchronization warehouse. Its control logic block diagram is shown in the attached figure. Figure 4Each node in the wireless sensor network corresponds to a different measurement point. The monitoring system background uses the MAC address of the wireless sensor node as the hardware ID of the node to establish a mapping with the measurement point location. Therefore, when exporting data, the data synchronization warehouse binds the data with the node MAC address, so that the measurement point corresponding to the sensor can be identified through this information.

[0038] A synchronization database is established in the data synchronization control module of the data charging warehouse. The database is stored according to time series and different measurement points to facilitate data management and query. In the process of acquiring data and writing it into the database, a data verification and encryption transmission mechanism is used to ensure that the acquired data is safe and reliable.

[0039] The data synchronization control module of the data charging warehouse can be connected to the host computer for management and data analysis. The host computer software needs to perform user authentication to ensure that only authorized users can operate the data exchange warehouse, and the host computer software assigns different permissions according to user roles. For example, administrators can perform system settings, delete data stored in sensors, and update data exchange warehouse software, while ordinary users can only view data. The host computer software will generate detailed logs such as wireless sensor access status, data synchronization records, system operations, and abnormal situations.

[0040] The data synchronization control module of the data charging warehouse can display the long-term trend graph of characteristic signals such as speed bandwidth value and main frequency amplitude recorded by each wireless sensor measuring point through the display screen. Users can filter out representative or analytically valuable time series data based on the trend graph, and then export the time series data within the time period based on the filtered data distribution time period, thereby effectively ensuring the practicality of the extracted data.

[0041] Specific application examples:

[0042] 1. When distributing wireless sensor networks, the sampling frequency, sampling duration, collection interval and other collection parameters will be set for each sensor node first. Depending on the set collection parameters, the battery-supported online monitoring time of the wireless sensor node will also change, and the time for the wireless sensor's internal storage to store monitoring data without overwriting will also vary. When the battery is low and the remaining storage space of the wireless sensor is insufficient, the node will send reminder information to the mobile phone, cloud platform and other application terminals connected to the wireless sensor network. In general, the power and storage space of wireless sensor nodes with uniformly set parameters will issue an early warning after a basically consistent period of time. When the early warning is received, these wireless sensors will be connected to the data synchronization charging compartment, and the charging compartment will light up the indicator light corresponding to the access groove, automatically charge and synchronize the time, and display the remaining power and storage space of the connected wireless sensor node on the display screen.

[0043] After the sensor node is connected, the data export can be started by the control button. The display screen will show the progress of data export. The charging compartment stores the data of each wireless sensor in the local database for users to transfer and query. When the data export is completed, the user can clear the data stored in each sensor node through the management.

[0044] 2. When the wireless sensor node determines that a device is operating abnormally, it will also send warning information to mobile phones, cloud platforms and other application terminals. At this time, all the measurement points arranged on the device can be connected to the data synchronization charging warehouse, and the PC and other terminals can be connected to the synchronization charging warehouse through the network cable. The data analysis software is opened, and the original data before and after the abnormal moment is intercepted for export and analysis. By analyzing the trend changes of the characteristic line spectrum over time, as well as the similarities and differences between the data of multiple wireless sensor measurement points on the device, the fault location of the equipment can be assisted.

Claims

1. A data synchronization charging bin for a wireless sensor network, characterized in that: The data synchronization warehouse comprises a data synchronization warehouse body structure and a data synchronization control system. The data synchronization warehouse body structure has a plurality of grooves on the data synchronization warehouse body, each groove is used to place a wireless sensor, the charging and communication interface of the wireless sensor adopts a magnetic connector, and the data synchronization warehouse body shell is equipped with a display screen, control buttons and indicator lights. The display screen is used to display the power level of each inserted wireless sensor, the remaining storage capacity and the data export progress, and the control button is used to enable the wireless sensor to export data; the data synchronization warehouse is provided with a gigabit network communication interface for connecting with a host computer and a server terminal, and data transfer or data interception analysis is performed through the control of the host computer and the server terminal, and the indicator lights are used to indicate whether the charging of the wireless sensor node is completed and whether the data export is completed; the data synchronization control module comprises an ARM main control The data synchronization warehouse adopts an external 220V power supply as the power supply, and the power management module is used to identify whether each charging power supply of the data synchronization warehouse has current output to the wireless sensor load to judge the access status of the wireless sensor; the ARM main control module is used to read the access of each wireless sensor node, and use the Beidou timing module to send the PPS second pulse synchronization signal and the absolute time information corresponding to the second pulse signal to the connected wireless sensor node, so as to realize the time synchronization of the wireless sensor node; the communication module communicates with the connected wireless sensor node and the host computer and server terminal through the PHY chip; the storage module is composed of multiple solid-state hard disks in the form of raid5 to form a disk array, and a part of the redundant space is used to ensure the security of the data.

2. The data synchronization charging compartment for wireless sensor networks according to claim 1, characterized in that: The wireless sensor is placed in the groove of the data synchronization warehouse body through a guide rail positioning structure to ensure the accurate and reliable fixation of the wireless sensor installation position. At the same time, the guide rail structure is used to achieve active anti-misalignment and prevent the wireless sensor from charging and reverse connection of the communication interface.

3. The data synchronization charging compartment for wireless sensor networks according to claim 1, characterized in that: The charging and communication interface of the wireless sensor adopts a magnetic connector, which is a 6-pin interface, of which 2 pins are used for power charging and 4 pins are used for 100M network communication.

4. The data synchronization charging compartment for wireless sensor networks according to claim 1, characterized in that: The indicator light has three colors. After the wireless sensor is connected, the charging indicator light and the data export indicator light are both red. When charging is completed, the charging indicator light turns green. After data synchronization is completed, the indicator light turns blue.

5. The data synchronization charging compartment for wireless sensor networks according to claim 1, characterized in that: When the host computer and server terminal are connected, the ARM main control module transfers data through the communication module, and uses the host computer and server terminal to analyze the data of the concerned measuring points and concerned time periods.

6. The data synchronization charging bin for wireless sensor networks according to claim 1, characterized in that: When the user controls the button to start the wireless sensor node to export data, a network communication connection is established between the ARM main control module and the wireless sensor node to write the measurement data requested to be stored into the storage module.

7. The data synchronization charging bin for wireless sensor networks according to claim 1, characterized in that: The data synchronization control module has a synchronization database, which stores data according to time series and different measuring points to facilitate data management and query. In the process of acquiring data and writing it into the synchronization database, a data verification and encryption transmission mechanism is used to ensure that the acquired data is safe and reliable.

8. The data synchronization charging bin for wireless sensor networks according to claim 1, characterized in that: The data synchronization control module is connected to the host computer for management and data analysis.

9. The data synchronization charging bin for wireless sensor networks according to claim 1, characterized in that: The data synchronization control module is connected to the display screen to display the long-term trend graph of the speed passband value and main frequency amplitude characteristic signal recorded by each wireless sensor measuring point. The user can filter out the time series data that is representative or has analysis value based on the trend graph, and then export the time series data within the time period based on the filtered data distribution time period, thereby effectively ensuring the practicality of the extracted data.

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