CN116017302B - Intelligent positioning and statistics management device and system - Google Patents
Intelligent positioning and statistics management device and system Download PDFInfo
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- CN116017302B CN116017302B CN202211611302.3A CN202211611302A CN116017302B CN 116017302 B CN116017302 B CN 116017302B CN 202211611302 A CN202211611302 A CN 202211611302A CN 116017302 B CN116017302 B CN 116017302B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides an intelligent positioning and management statistics device and system, which are characterized in that a wireless network without a center is established for communicating with adjacent nodes to perform asset management, a Bluetooth communication module for measuring the relative distance and the relative direction of the adjacent nodes, an asset management module for recording the information of articles bound by the current nodes and asset management lists of all nodes in the wireless network, a verification module for verifying authentication information in a network access application of a network access device, a networking management module for configuring the network access device as a new node of the wireless network after the verification is passed, and an adjacent node management module for maintaining an adjacent node information list connected with the current node, broadcasting adjacent node change information of the current node and subscribing adjacent node change information of other nodes in the wireless network are arranged.
Description
Technical Field
The invention relates to the technical field of the Internet of things, in particular to an intelligent positioning and statistics management device and system.
Background
With the development of the internet of things technology, the internet of things technology is adopted as an asset management means to be one of the popular choices for optimizing asset management schemes in recent years, common internet of things communication technologies for asset management include RFID (Radio Frequency Identification ), zigBee (ZigBee), NB-IoT (Narrow Band Internet of Things, narrowband internet of things), loRa (Long Range Radio), wi-Fi (wireless network communication), BLE (Bluetooth Low Energy ), and the like, wherein RFID and ZigBee are favored by people for various advantages such as small volume, low power consumption, a large number of connectable nodes, flexible use, and the like, for example, RFID is often used for in-and-out warehouse management of materials, books, and the like in factories or libraries, whereas ZigBee benefits from a topology network consisting of a large number of routing nodes, and can track terminal nodes in signal coverage in real time, and is often used for whole-course positioning tracking of express, materials, and the like in industrial or logistics fields. However, the RFID generally only sets a reader at the entrance and exit for warehouse-in and warehouse-out management due to the short sensing distance, and cannot track and count each article in real time. Although the ZigBee technology can track and count the terminal nodes in real time, the terminal nodes need to realize network access communication through a connected coordinator or routing nodes, the tracking and counting range is limited to the range covered by a topological network formed by the coordinator and the routing nodes, and as the signal coverage range of each routing node of the ZigBee is limited, a large number of routing nodes need to be arranged to meet the requirement of practical application, and when the routing nodes are used as the terminal nodes, the routing nodes are not suitable for article management needing frequent movement.
Disclosure of Invention
Based on the problems, the invention provides an intelligent positioning and management statistics device and system, which can realize real-time positioning, tracking and statistics of articles and flexibly add and delete nodes.
In view of the foregoing, a first aspect of the present invention provides an intelligent positioning and statistics management device, including:
the Bluetooth communication module is used for communicating with the adjacent nodes to establish a centerless wireless mesh network for asset management, measuring the relative distance of the adjacent nodes through the Bluetooth signal intensity of the adjacent nodes, and calculating the relative direction of the adjacent nodes through the Bluetooth signal phase difference of the adjacent nodes, which is measured through a Bluetooth antenna array;
the asset management module is used for recording information of the articles bound by the current node and asset management lists of all nodes in the wireless mesh network added by the current node, wherein the information of the articles at least comprises article numbers, article names, asset types and units to which the articles belong, and the asset management lists at least comprise the article numbers and communication addresses of all the nodes in the wireless mesh network;
the networking management module is used for verifying authentication information in a networking application of a device to be networked, configuring the device to be networked as a new node of the wireless grid after verification is passed, wherein the configuring the device to be networked as the new node of the wireless grid specifically comprises the steps of distributing a communication address for the new node and recording an article number and the communication address of the new node into the asset management list;
and the adjacent node management module is used for maintaining an adjacent node information list connected with the current node, broadcasting adjacent node change information of the current node and subscribing adjacent node change information of other nodes in the wireless mesh network.
Further, in the above-mentioned intelligent positioning and management statistics device, the neighboring node management module is further configured to broadcast information of a relative distance and a relative direction between a current node and a neighboring node, and subscribe information of a relative distance and a relative direction between a neighboring node and a neighboring node, and the intelligent positioning and management statistics device further includes:
the control device connection module is used for being in communication connection with the control device through wired or wireless communication;
the coordinate initialization module is used for determining three-dimensional coordinates of a current node or any other node in the wireless mesh network according to the operation of a user on the asset management area diagram through the control device;
the coordinate calculation module is used for acquiring the relative distance and the relative direction of at least two adjacent nodes with known coordinates through the Bluetooth communication module and calculating the three-dimensional coordinates of the current node;
the asset management module is also used for recording the three-dimensional coordinates of the current node.
Further, in the above-mentioned intelligent positioning and management statistics device, the coordinate initialization module is further configured to verify whether the three-dimensional coordinate of the current node determined by the operation of the control device on the asset management area map is correct according to the relative distance and the relative direction of the neighboring nodes with known coordinates.
Further, in the above-mentioned intelligent positioning and management statistics device, the neighboring node change information includes newly added neighboring node information, and the intelligent positioning and management statistics device further includes:
the networking management module is also used for configuring the new node as a newly added adjacent node of the current node;
the adjacent node management module is further used for judging whether the adjacent node change information contains newly added adjacent node information after receiving the adjacent node change information of other nodes in the wireless mesh network;
the asset management module is further configured to determine whether the newly added neighboring node information is already included in the asset management list when the neighboring node change information includes newly added neighboring node information, and add the newly added neighboring node information to the asset management list when the newly added neighboring node information is not included in the asset management list.
Further, in the above-mentioned intelligent positioning and management statistics device, the neighboring node change information includes leaving node information, and the intelligent positioning and management statistics device further includes:
the leaving node judging module is used for determining the adjacent node as a leaving node and deleting the leaving node from the adjacent node information list when the signal of any adjacent node in the adjacent node information list is not detected within a preset first duration;
the off-network node judging module is used for determining the off-network node as the off-network node when the off-network node is used as a newly added adjacent node in adjacent node change information broadcast by any node of the wireless mesh network is not received within a preset second time length, and the second time length is longer than the first time length;
the asset management module is further configured to delete the off-network node from the asset management list.
Further, in the above-mentioned intelligent positioning and management statistics device, further includes:
the mobile node judging module is used for determining the mobile node and the non-mobile node according to the relative distance change of a plurality of adjacent nodes when the relative distance and/or the relative direction between the current node and any adjacent node are changed;
the coordinate calculation module is also used for calculating a new three-dimensional coordinate of the current node when the current node is a mobile node and the relative distance and/or relative direction between the current node and the adjacent node are not changed any more;
the asset management module is also configured to record new three-dimensional coordinates of the current node.
Further, in the above-mentioned intelligent positioning and management statistics device, further includes:
the mobile state identification module is used for recording a mobile state identification which indicates that the position of the current node is changed or not changed after the current node is initialized or the last coordinate correction is performed;
the neighboring node management module is further configured to broadcast the mobility state identifier of a current node and subscribe to the mobility state identifiers of other nodes in the wireless mesh network.
Further, in the above-mentioned intelligent positioning and management statistics device, further includes:
the coordinate correction module is used for correcting the coordinates of the current node according to the coordinates of the node with the unchanged position at a preset correction period when the wireless mesh network comprises at least two nodes with unchanged position after initialization or last coordinate correction; the method comprises the steps of,
the coordinate correction module is further configured to send out a manual correction prompt when fewer than two nodes are included in the wireless mesh network, where the positions of the nodes do not change after the initialization or the last coordinate correction.
Further, in the above-mentioned intelligent positioning and management statistics device, it includes:
the navigation device connection module is used for being in communication connection with a navigation device with asset management list reading authority and coordinate information acquisition authority through the Bluetooth communication module;
the target node selection module is used for determining target nodes to be positioned according to the operation of a user in the asset management list or the asset management area diagram through the navigation device;
the Bluetooth communication module is also used for acquiring the relative distance and the relative direction between the navigation device and the current node so that the navigation device can play the three-dimensional coordinates of the target node according to the heat, calculate the relative distance and the relative direction between the navigation device and the target node, and display the navigation route to the position of the target node on the asset management and control area diagram.
A second aspect of the present invention proposes an intelligent positioning and management statistics system, comprising a plurality of intelligent positioning and management statistics devices for positioning and counting objects, which are connected to each other to form a wireless mesh network without a center, a control device connected to the intelligent positioning and management statistics devices for initializing and correcting the three-dimensional space position of the intelligent positioning and management statistics devices, and a navigation device connected to the intelligent positioning and management statistics devices for searching one of a plurality of the intelligent positioning and management statistics devices.
The invention provides an intelligent positioning and management statistics device and system, which are characterized in that a wireless network without a center is established for communicating with adjacent nodes to perform asset management, a Bluetooth communication module for measuring the relative distance and the relative direction of the adjacent nodes, an asset management module for recording the information of articles bound by the current nodes and asset management lists of all nodes in the wireless network, a verification module for verifying authentication information in a network access application of a network access device, a networking management module for configuring the network access device as a new node of the wireless network after the verification is passed, and an adjacent node management module for maintaining an adjacent node information list connected with the current node, broadcasting adjacent node change information of the current node and subscribing adjacent node change information of other nodes in the wireless network are arranged.
Drawings
FIG. 1 is a schematic block diagram of an intelligent positioning and statistics management apparatus according to one embodiment of the present invention;
fig. 2 is a schematic block diagram of an intelligent positioning and statistics management system according to an embodiment of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of this specification, the terms "one embodiment," "some implementations," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
An apparatus and system for intelligent positioning and statistics management according to some embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1, a first aspect of the present invention proposes an intelligent positioning and statistics management device, including:
the Bluetooth communication module is used for communicating with the adjacent nodes to establish a centerless wireless mesh network for asset management, measuring the relative distance of the adjacent nodes through the Bluetooth signal intensity of the adjacent nodes, and calculating the relative direction of the adjacent nodes through the Bluetooth signal phase difference of the adjacent nodes, which is measured through a Bluetooth antenna array;
the asset management module is used for recording information of the articles bound by the current node and asset management lists of all nodes in the wireless mesh network added by the current node, wherein the information of the articles at least comprises article numbers, article names, asset types and units to which the articles belong, and the asset management lists at least comprise the article numbers and communication addresses of all the nodes in the wireless mesh network;
the networking management module is used for verifying authentication information in a networking application of a device to be networked, configuring the device to be networked as a new node of the wireless grid after verification is passed, wherein the configuring the device to be networked as the new node of the wireless grid specifically comprises the steps of distributing a communication address for the new node and recording an article number and the communication address of the new node into the asset management list;
and the adjacent node management module is used for maintaining an adjacent node information list connected with the current node, broadcasting adjacent node change information of the current node and subscribing adjacent node change information of other nodes in the wireless mesh network.
The wireless grid network is divided into a centered scheme and a non-centered scheme, wherein the centered scheme is a center which is used as a networking through a center node or a center controller and is responsible for authentication, address allocation, transaction processing of external communication and other node management, and a terminal node is directly connected with the center node or is connected with the center node through a fixedly arranged proxy node. According to the technical scheme, a centerless scheme is adopted for networking, each node in the wireless grid network is a terminal node, node management transactions in the network comprise authentication, address allocation, positioning and statistics of the nodes and the like, all the nodes are completed cooperatively, an external positioning device is not needed, and a positioning node with a fixed position is not needed to be arranged.
In the technical scheme of the invention, the distance between the intelligent positioning and management statistical devices is measured through RSSI (Received Signal Strength Indicator) of Bluetooth signals between the intelligent positioning and management statistical devices, and along with the development of Bluetooth technology, the distance measurement precision of the version after Bluetooth 5.0 can reach the range of 1 to 2 meters, and the requirement of indoor asset management on the positioning precision of the articles is lower, so long as the approximate position of the articles can be determined, the measurement precision can completely meet the requirement of indoor asset management application. The version after Bluetooth 5.0 has the capability of carrying out signal direction finding through the self-contained antenna array, and the relative direction between the two can be calculated according to the phase difference of signals transmitted by different antennas in the antenna array of the transmitting end or the receiving end.
In the above-mentioned intelligent positioning and management statistics device, the neighboring node management module is further configured to broadcast information of a relative distance and a relative direction between a current node and a neighboring node, and subscribe information of a relative distance and a relative direction between a neighboring node and a neighboring node, and the intelligent positioning and management statistics device further includes:
the control device connection module is used for being in communication connection with the control device through wired or wireless communication;
the coordinate initialization module is used for determining three-dimensional coordinates of a current node or any other node in the wireless mesh network according to the operation of a user on the asset management area diagram through the control device;
the coordinate calculation module is used for acquiring the relative distance and the relative direction of at least two adjacent nodes with known coordinates through the Bluetooth communication module and calculating the three-dimensional coordinates of the current node;
the asset management module is also used for recording the three-dimensional coordinates of the current node.
In the above intelligent positioning and management statistics device, the coordinate initialization module is further configured to verify whether the three-dimensional coordinate of the current node determined by the operation of the control device on the asset management area map is correct according to the relative distance and the relative direction of the neighboring nodes with known coordinates.
By adopting the technical scheme of the embodiment, each node in the wireless grid network stores the information list of all the assets in the network, and the authorized control device is connected with any node in the network in a wired or wireless connection mode, so that the asset information list managed by the wireless grid network can be obtained for inquiring, counting, summarizing and other operations.
Specifically, the method for initializing the coordinates of the nodes in the wireless mesh network through the intelligent positioning and management statistical device comprises the following steps:
connecting a control device with a user interaction unit with any node in the wireless mesh network in a wired or wireless connection mode, wherein the user interaction unit comprises, but is not limited to, a display panel, a touch panel, a keyboard, a mouse, a remote controller and the like;
the control device receives the operation of a user on the asset management area diagram stored by the control device through the user interaction unit to determine the three-dimensional coordinates of at least two nodes in the wireless mesh network;
the control device sends the three-dimensional coordinates of the at least two nodes to the connected nodes so as to send the three-dimensional coordinates of the at least two nodes to the corresponding nodes for storage through the connected nodes;
other nodes in the wireless mesh network acquire relative distances and relative directions between each and adjacent nodes to calculate coordinates of each on the asset management area graph according to the three-dimensional coordinates of the at least two nodes for which the three-dimensional coordinates have been determined.
In the above-mentioned intelligent positioning and management statistics device, the neighboring node change information includes newly added neighboring node information, and the intelligent positioning and management statistics device further includes:
the networking management module is also used for configuring the new node as a newly added adjacent node of the current node;
the adjacent node management module is further used for judging whether the adjacent node change information contains newly added adjacent node information after receiving the adjacent node change information of other nodes in the wireless mesh network;
the asset management module is further configured to determine whether the newly added neighboring node information is already included in the asset management list when the neighboring node change information includes newly added neighboring node information, and add the newly added neighboring node information to the asset management list when the newly added neighboring node information is not included in the asset management list.
Specifically, the intelligent positioning and management statistics device is provided with a pairing key, and the method for adding the new node into the wireless mesh network through the intelligent positioning and management statistics device comprises the following steps:
triggering a pairing key of any node in the wireless mesh network to enable the current node to enter a pairing mode;
pairing the network device to be accessed with the current node and establishing Bluetooth communication connection;
the device to be accessed to the network sends an access application to the current node;
the current node verifies the authentication information in the network access application of the network access device;
after the current node passes verification, configuring the network device to be accessed as a new node of the wireless grid, wherein the configuring the network device to be accessed as the new node of the wireless grid specifically comprises the steps of distributing a communication address for the new node and recording the article number and the communication address of the new node into the asset management list;
the current node records the information of the new node to the adjacent node information list;
the current node broadcasts adjacent node change information of the current node;
and receiving adjacent node change information broadcast by the nodes by other nodes in the wireless grid, and recording the information of the newly-accessed node into the asset management list of the node when the newly-accessed node is contained in the adjacent node change information.
In the above-mentioned intelligent positioning and management statistics device, the neighboring node change information includes leaving node information, and the intelligent positioning and management statistics device further includes:
the leaving node judging module is used for determining the adjacent node as a leaving node and deleting the leaving node from the adjacent node information list when the signal of any adjacent node in the adjacent node information list is not detected within a preset first duration;
the off-network node judging module is used for determining the off-network node as the off-network node when the off-network node is used as a newly added adjacent node in adjacent node change information broadcast by any node of the wireless mesh network is not received within a preset second time length, and the second time length is longer than the first time length;
the asset management module is further configured to delete the off-network node from the asset management list.
Specifically, the method for deleting the node from the wireless mesh network through the intelligent positioning and management statistical device comprises the following steps:
each node in the wireless mesh network periodically detects a bluetooth signal of each neighboring node in the neighboring node information list;
when any node in the wireless mesh network does not detect the Bluetooth signal of any adjacent node in the adjacent node information list within a preset first duration, determining the adjacent node as a leaving node of the current node;
the current node deletes the leaving node from the adjacent node information list;
when the current node does not receive the adjacent node change information broadcast by any node of the wireless mesh network in a preset second time period and takes the leaving node as a newly added adjacent node, the leaving node is determined to be an off-network node, and the second time period is longer than the first time period;
the current node broadcasts adjacent node change information of the current node;
and other nodes in the wireless grid network receive the adjacent node change information broadcast by the nodes, and when the adjacent node change information contains off-grid nodes, the information of the off-grid nodes is deleted from the asset management list recorded by the node.
In the above-mentioned intelligent positioning and management statistics device, further comprising:
the mobile node judging module is used for determining the mobile node and the non-mobile node according to the relative distance change of a plurality of adjacent nodes when the relative distance and/or the relative direction between the current node and any adjacent node are changed;
the coordinate calculation module is also used for calculating a new three-dimensional coordinate of the current node when the current node is a mobile node and the relative distance and/or relative direction between the current node and the adjacent node are not changed any more;
the asset management module is also configured to record new three-dimensional coordinates of the current node.
Specifically, the method for judging the mobile node by the intelligent positioning and management statistical device comprises the following steps:
when the relative distance and/or the relative direction between the current node and any adjacent node are changed, acquiring the relative distance and the relative direction between the current node and each adjacent node in the adjacent node information list before and after the change;
when the relative distance or the relative direction between the current node and each adjacent node in the adjacent node information list is changed, determining that the current node is a mobile node;
and when the relative distance and the relative direction between the current node and at least two adjacent nodes in the adjacent node information list are not changed, determining that the current node is a non-mobile node.
In the above-mentioned intelligent positioning and management statistics device, further comprising:
the mobile state identification module is used for recording a mobile state identification which indicates that the position of the current node is changed or not changed after the current node is initialized or the last coordinate correction is performed;
the neighboring node management module is further configured to broadcast the mobility state identifier of a current node and subscribe to the mobility state identifiers of other nodes in the wireless mesh network.
In the above-mentioned intelligent positioning and management statistics device, further comprising:
the coordinate correction module is used for correcting the coordinates of the current node according to the coordinates of the node with the unchanged position at a preset correction period when the wireless mesh network comprises at least two nodes with unchanged position after initialization or last coordinate correction; the method comprises the steps of,
the coordinate correction module is further configured to send out a manual correction prompt when fewer than two nodes are included in the wireless mesh network, where the positions of the nodes do not change after the initialization or the last coordinate correction.
The coordinate correction module is further configured to correct the relative distances according to the relative directions between the plurality of neighboring nodes in the wireless mesh network, and since the accuracy of the relative directions between the nodes obtained by phase difference calculation is far higher than the accuracy of the relative distances obtained by signal strength calculation, after the relative distances are obtained by calculation, a relative distance value with higher accuracy can be determined by the relative directions between the plurality of neighboring nodes within the error range of the relative distances. However, even though the accuracy of the relative distance between the nodes can be improved by the relative direction between the plurality of nodes, the positioning error becomes large cumulatively after the frequent movement of the nodes, so that after a period of time, particularly when all the nodes have moved, the three-dimensional coordinates held by each node have a large deviation from the actual positions thereof, thereby requiring user intervention to correct them.
The intelligent positioning and management statistics device is provided with a warning lamp, and the manual correction prompt is specifically that the warning lamp of each node of the wireless grid is displayed with yellow warning colors and the like to prompt a user to execute manual correction on the wireless grid.
Specifically, the method for manually correcting the three-dimensional coordinates of the nodes in the wireless mesh network through the intelligent positioning and management statistical device comprises the following steps:
connecting a control device with a user interaction unit with any node in the wireless mesh network in a wired or wireless connection mode, wherein the user interaction unit comprises, but is not limited to, a display panel, a touch panel, a keyboard, a mouse, a remote controller and the like;
the control device acquires three-dimensional coordinates of all nodes in the wireless mesh network from the connected nodes;
displaying all nodes in the wireless mesh network on corresponding positions of the asset management and control area graph according to the three-dimensional coordinates;
the control device receives at least two nodes which are selected by a user on the asset management area diagram and deviate from actual positions through the user interaction unit as correction nodes;
the control device receives the corrected position or coordinate value of the correction node input by a user through the user interaction unit, for example, the user moves the correction node from one position to another position on the asset management area diagram;
updating the three-dimensional coordinates of other nodes except the correction node according to the relative distance and the relative azimuth of the other nodes and the adjacent nodes in the wireless mesh network;
the control device displays the updated positions of all nodes on the wireless network on the asset management area diagram;
the control device receives confirmation operation input by a user through the user interaction unit;
and the control device sends the updated three-dimensional coordinates to the corresponding nodes for storage through the connected nodes.
The above-mentioned intelligent positioning and management statistics device includes:
the navigation device connection module is used for being in communication connection with a navigation device with asset management list reading authority and coordinate information acquisition authority through the Bluetooth communication module;
the target node selection module is used for determining target nodes to be positioned according to the operation of a user in the asset management list or the asset management area diagram through the navigation device;
the Bluetooth communication module is also used for acquiring the relative distance and the relative direction between the navigation device and the current node so that the navigation device can play the three-dimensional coordinates of the target node according to the heat, calculate the relative distance and the relative direction between the navigation device and the target node, and display the navigation route to the position of the target node on the asset management and control area diagram.
Specifically, the method for positioning and navigating the nodes in the wireless mesh network through the intelligent positioning and management statistical device comprises the following steps:
connecting a navigation device with a user interaction unit with a node of the wireless mesh network, wherein the node covers the navigation device in the Bluetooth signal range;
the navigation device acquires three-dimensional coordinates of all nodes in the wireless mesh network from the connected nodes;
displaying all nodes in the wireless mesh network on corresponding positions of the asset management and control area graph according to the three-dimensional coordinates;
the navigation device receives a target node selected by a user on the asset management and control area diagram through the user interaction unit;
the navigation device acquires the relative distance and the relative direction between the navigation device and the connected node from the connected node;
the navigation device calculates the relative distance and the relative direction between the navigation device and the target node according to the three-dimensional coordinates of the target node;
the navigation device displays a navigation route to the target node location on the asset management area map.
As shown in fig. 2, a second aspect of the present invention proposes an intelligent positioning and management statistics system, comprising a plurality of intelligent positioning and management statistics devices for positioning and counting objects, which are connected to each other to form a centerless wireless mesh network, a control device connected to the intelligent positioning and management statistics devices for initializing and correcting the three-dimensional space position of the intelligent positioning and management statistics devices, and a navigation device connected to the intelligent positioning and management statistics devices for searching one of a plurality of the intelligent positioning and management statistics devices.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Embodiments in accordance with the present invention, as described above, are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. An intelligent positioning and management statistics device, comprising:
the Bluetooth communication module is used for communicating with the adjacent nodes to establish a centerless wireless mesh network for asset management, measuring the relative distance of the adjacent nodes through the Bluetooth signal intensity of the adjacent nodes, and calculating the relative direction of the adjacent nodes through the Bluetooth signal phase difference of the adjacent nodes, which is measured through a Bluetooth antenna array;
the asset management module is used for recording information of the articles bound by the current node and asset management lists of all nodes in the wireless mesh network added by the current node, wherein the information of the articles at least comprises article numbers, article names, asset types and units to which the articles belong, and the asset management lists at least comprise the article numbers and communication addresses of all the nodes in the wireless mesh network;
the networking management module is used for verifying authentication information in a networking application of a device to be networked, configuring the device to be networked as a new node of the wireless mesh network after verification is passed, wherein configuring the device to be networked as the new node of the wireless mesh network specifically comprises the steps of distributing a communication address for the new node and recording an article number and the communication address of the new node into the asset management list;
the adjacent node management module is used for maintaining an adjacent node information list connected with the current node, broadcasting adjacent node change information of the current node and subscribing adjacent node change information of other nodes in the wireless mesh network;
the adjacent node management module is further used for broadcasting the relative distance and relative direction information of the current node and the adjacent node and subscribing the relative distance and relative direction information of the adjacent node and the adjacent node, and the intelligent positioning and management statistical device further comprises:
the control device connection module is used for being in communication connection with the control device through wired or wireless communication;
the coordinate initialization module is used for determining three-dimensional coordinates of a current node or any other node in the wireless mesh network according to the operation of a user on the asset management area diagram through the control device;
the coordinate calculation module is used for acquiring the relative distance and the relative direction of at least two adjacent nodes with known coordinates through the Bluetooth communication module and calculating the three-dimensional coordinates of the current node;
the asset management module is also used for recording the three-dimensional coordinates of the current node.
2. The intelligent positioning and management statistics apparatus according to claim 1, wherein the coordinate initialization module is further configured to verify whether the three-dimensional coordinates of the current node determined by the operation of the control apparatus on the asset management area map are correct according to the relative distance and the relative direction of the neighboring nodes with known coordinates.
3. The intelligent positioning and management statistics apparatus according to claim 2, wherein the neighboring node change information includes newly added neighboring node information, the intelligent positioning and management statistics apparatus further comprising:
the networking management module is also used for configuring the new node as a newly added adjacent node of the current node;
the adjacent node management module is further used for judging whether the adjacent node change information contains newly added adjacent node information after receiving the adjacent node change information of other nodes in the wireless mesh network;
the asset management module is further configured to determine whether the newly added neighboring node information is already included in the asset management list when the neighboring node change information includes newly added neighboring node information, and add the newly added neighboring node information to the asset management list when the newly added neighboring node information is not included in the asset management list.
4. The intelligent positioning and management statistics apparatus according to claim 3 wherein said neighboring node change information comprises leaving node information, said intelligent positioning and management statistics apparatus further comprising:
the leaving node judging module is used for determining the adjacent node as a leaving node and deleting the leaving node from the adjacent node information list when the signal of any adjacent node in the adjacent node information list is not detected within a preset first duration;
the off-network node judging module is used for determining the off-network node as the off-network node when the off-network node is used as a newly added adjacent node in adjacent node change information broadcast by any node of the wireless mesh network is not received within a preset second time length, and the second time length is longer than the first time length;
the asset management module is further configured to delete the off-network node from the asset management list.
5. The intelligent positioning and management statistics apparatus according to claim 2, further comprising:
the mobile node judging module is used for determining the mobile node and the non-mobile node according to the relative distance change of a plurality of adjacent nodes when the relative distance and/or the relative direction between the current node and any adjacent node are changed;
the coordinate calculation module is also used for calculating a new three-dimensional coordinate of the current node when the current node is a mobile node and the relative distance and/or relative direction between the current node and the adjacent node are not changed any more;
the asset management module is also configured to record new three-dimensional coordinates of the current node.
6. The intelligent positioning and management statistics apparatus according to claim 5, further comprising:
the mobile state identification module is used for recording a mobile state identification which indicates that the position of the current node is changed or not changed after the current node is initialized or the last coordinate correction is performed;
the neighboring node management module is further configured to broadcast the mobility state identifier of a current node and subscribe to the mobility state identifiers of other nodes in the wireless mesh network.
7. The intelligent positioning and management statistics apparatus according to claim 6, further comprising:
the coordinate correction module is used for correcting the coordinates of the current node according to the coordinates of the node with the unchanged position at a preset correction period when the wireless mesh network comprises at least two nodes with unchanged position after initialization or last coordinate correction; the method comprises the steps of,
the coordinate correction module is further configured to send out a manual correction prompt when fewer than two nodes are included in the wireless mesh network, where the positions of the nodes do not change after the initialization or the last coordinate correction.
8. The intelligent positioning and management statistics apparatus according to any one of claims 1-7, comprising:
the navigation device connection module is used for being in communication connection with a navigation device with asset management list reading authority and coordinate information acquisition authority through the Bluetooth communication module;
the target node selection module is used for determining target nodes to be positioned according to the operation of a user in the asset management list or the asset management area diagram through the navigation device;
the Bluetooth communication module is also used for acquiring the relative distance and the relative direction between the navigation device and the current node so that the navigation device can play the three-dimensional coordinates of the target node according to the heat, calculate the relative distance and the relative direction between the navigation device and the target node, and display the navigation route to the position of the target node on the asset management and control area diagram.
9. An intelligent positioning and management statistics system, characterized by comprising a plurality of intelligent positioning and management statistics devices according to any one of claims 1-8, a control device connected with the intelligent positioning and management statistics devices and used for initializing and correcting the three-dimensional space position of the intelligent positioning and management statistics devices, and a navigation device connected with the intelligent positioning and management statistics devices and used for searching one of a plurality of the intelligent positioning and management statistics devices, wherein the plurality of the intelligent positioning and management statistics devices are mutually connected to form a centerless wireless grid network for positioning and statistics of articles.
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