A wireless power transmission system and method applied to a MESH network

Abstract

The present invention discloses a wireless power transmission system and method applied to a MESH network, which relates to the technical field of wireless power transmission. The system includes: a built-in Mesh communication module and a wireless power transmission device provided in each node of the MESH network, and a system management host; the built-in Mesh communication module is used to obtain the remaining power, ID number, and distance information from the cluster head node of the battery pack of the corresponding node, and send the data collected by its own node to the node with a smaller layer number through the node with a larger layer number; the system management host is used to determine the node with the closest distance to the node to be charged and with the remaining power allowed; the wireless power transmission device is used to perform power transmission for charging and discharging the battery pack in the corresponding node according to the received charge and discharge control signal. By transferring energy between devices, the present invention can avoid the problem that the entire system collapses due to the shutdown of devices with more data processing in the traditional Mesh network due to power problems, thereby improving the endurance performance.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless power transmission, and particularly to a wireless power transmission system and method applied to a MESH network. Background Art

[0002] Wireless MESH networks have the capabilities of self-organizing networking and self-healing. Each node can be individually controlled. It can regularly detect the signal strength of each node in the network. When the signal strength weakens, it automatically reorganizes the network, automatically maintains the network hierarchy and the signal stability between it and edge devices. At the same time, since each node in the Mesh network can act as both a child node and a parent node, only one node in the entire network is connected to the edge device, and the remaining devices only need to connect to the adjacent devices that have already formed a network. Also, the Mesh network has a certain self-healing ability and can self-organize a network in the case of the root node or any parent node being offline. However, this will lead to the accumulation of data generated before the reorganization. Although the data generated before will be sent after the new network comes back online, in scenarios with high requirements for data real-time performance, such as monitoring the fire in a cable channel, a coal mine emergency command system, a miner's electrocardiogram signal detection system, etc., in these applications, untimely data feedback will obviously lead to a certain degree of danger, and even disasters.

[0003] Due to the various excellent characteristics of wireless Mesh networks compared to traditional WiFi wireless network forms or wired forms, they are increasingly applied to high-real-time monitoring environments such as fires and faults, and reliable transmission of their video signals or temperature signals is required. At the same time, due to their excellent transmission performance and reliability, their application fields are expanding from small ranges to large ranges, and they are applied to long and narrow cable channels or mine tunnels. Therefore, more network nodes are needed. The root node or parent node in the network needs to transmit more data than the child nodes, but this will cause it to consume power faster than the child nodes, and then lead to the Mesh network reorganizing due to insufficient power of the root node or parent node, untimely data transmission, and seriously affecting the information transmission between nodes, greatly reducing the performance of the network. Summary of the Invention

[0004] Based on this, in view of the technical problem in the above-mentioned background art that the real-time performance of data transmission is affected due to insufficient power of the root node or parent node in the traditional Mesh network, the embodiments of the present invention provide the following technical solutions:

[0005] A wireless power transmission system applied to a MESH network, including: The Mesh network includes: a system management host, a relay routing device connected to the system management host, and each level of nodes connected to the relay routing device;

[0006] The system includes: a built-in Mesh communication module and a wireless power transmission device provided in all nodes;

[0007] The built-in Mesh communication module is used to transmit the remaining power of the battery pack, the ID number, and the distance information from the cluster head node of the corresponding node;

[0008] The system management host is used to compare and judge the remaining power of the battery packs corresponding to each node, record the ID numbers of the nodes that need to be charged and the ID numbers of the nodes whose remaining power is more than the threshold power; according to the distance priority principle, judge the node with sufficient remaining power that is closest to the node that needs to be charged; and send charge and discharge control signals to the corresponding node through the Mesh network to start the wireless power transmission device;

[0009] The wireless power transmission device, when started, is used to charge and discharge the battery pack in the corresponding node through wireless power transmission.

[0010] Further, the MESH network includes:

[0011] The relay routing device is called the root node of the MESH network, the upper-layer node is defined as the cluster head node, and the lower-layer node that transmits data information to the cluster head node is defined as a cluster.

[0012] Preferably, the system provided by the embodiment of the present invention further includes: a sensor device provided in each node of the MESH network; and the sensor device includes: a temperature sensor acquisition terminal and a camera terminal.

[0013] Further, the wireless power transmission device includes: a transmitting part and a receiving part;

[0014] The transmitting part includes: a DC-DC module, an inverter circuit, and a transmitting mechanism composed of a wound coil, which are electrically connected in sequence;

[0015] The receiving part includes: a receiving mechanism composed of a wound coil, a rectifying and filtering module, and a modulation signal module, which are electrically connected in sequence, and the receiving mechanism is arranged in parallel at a short distance from the transmitting mechanism; wherein, the modulation signal module is connected to the battery pack in the node.

[0016] Preferably, the system provided by the embodiment of the present invention further includes: a battery management device provided in each node of the MESH network; and the battery management device includes:

[0017] A current detection module, whose input end is connected to the battery pack, is used to collect the output current of the battery pack;

[0018] The remaining battery capacity estimation module is used to calculate the state of charge (SOC) of the battery according to the output current by using the ampere-hour integration method in combination with the open-circuit voltage method; wherein, the state of charge (SOC) of the battery is the ratio of the remaining battery capacity to the actual capacity measured under the same discharge conditions of the battery.

[0019] The equalization module, whose input terminal is connected to the output terminal of the modulation signal module and the output terminal is connected to the battery pack; is used to adopt a centralized non-energy-dissipating equalization circuit topology structure, that is, a winding is connected to each single battery of the battery pack at the same time. When the voltage difference between the single batteries in the battery pack is detected to exceed 1% of the single battery voltage, the energy of the high-voltage single battery is transferred to the low-voltage battery through coil coupling until the actual voltage values of each single battery are stabilized at the average value to complete the equalization management of the battery pack.

[0020] A wireless power transmission method applied to a MESH network includes:

[0021] Construct a Mesh network;

[0022] In the Mesh network, the Mesh communication modules in each node send the remaining battery capacity, ID number, and distance from the cluster head node of their own node to the node with a smaller layer number through the node with a larger layer number until the system management host;

[0023] The system management host compares and judges the remaining battery capacity of each node's corresponding battery pack, records the ID numbers of the nodes that need to be charged and the ID numbers of the nodes whose remaining power is more than the threshold power; according to the distance priority principle, judges the node with the remaining power allowed that is closest to the node that needs to be charged; and sends a charge and discharge control signal to the corresponding node through the Mesh network to start the wireless power transmission device.

[0024] After the wireless power transmission device in the corresponding node is started, the wireless power transmission device charges and discharges the battery pack through the wireless power transmission method.

[0025] Further, the construction of the MESH network specifically includes:

[0026] The system management host is powered on and sends a command to the nearest relay routing device. The nearest relay routing device serves as the root node and starts self-organizing the network;

[0027] The root node connects to other relay routing devices within the reach of the signal to form the second layer;

[0028] The second-layer relay routing device sends beacon frames to the relay routing devices within the reach of the signal. After receiving the beacon frames requesting connection, the relay routing devices connect according to the following principles: preferentially connect to the relay routing device with fewer child nodes; if the number of child nodes is the same, connect to the relay routing device with a stronger signal. If the signal strengths are the same, a random connection will be made to form the third layer.

[0029] After the third layer is formed, other layers are formed according to the same networking principle to complete the networking of the relay routing devices.

[0030] Preferably, the method provided by the embodiment of the present invention further includes:

[0031] The relay routing device with the largest number of layers in the Mesh network sends beacon frames to the temperature sensor acquisition terminals and camera terminals within the reach, and completes the networking of subsequent layers according to the same networking principle;

[0032] Among them, for the monitoring data obtained by the temperature sensor acquisition terminals and camera terminals, it is transmitted to the system management host through the mesh network.

[0033] Furthermore, the determination of the remaining battery power specifically includes:

[0034] Obtain the output current of the battery pack in real time;

[0035] According to the output current, use the ampere-hour integration method combined with the open-circuit voltage method to calculate the state of charge (SOC) of the battery; where the state of charge (SOC) of the battery is the ratio of the remaining battery power to the actual capacity measured under the same discharge conditions of the battery;

[0036] Determine the remaining battery power according to the state of charge (SOC) of the battery

[0037] Preferably, the method provided by the embodiment of the present invention further includes:

[0038] When it is detected that the voltage difference between the single batteries in the battery pack exceeds 1% of the single battery voltage, transfer the energy of the high-voltage single battery to the low-voltage battery through coil coupling until the actual voltage values of each single battery are stabilized at the average value to complete the equalization management of the battery pack.

[0039] The above wireless power transmission system and method applied to the MESH network provided by the embodiment of the present invention, compared with the prior art, have the following beneficial effects:

[0040] In the embodiment of the present invention, the nodes of the network are interconnected by adopting a Mesh network. The problem of insufficient power of nodes is solved by adopting a wireless power transmission method based on magnetic coupling resonance. While real-time feedback data carries the power information of each node, analyze and judge the nodes with sufficient power that meet the conditions near the nodes that need to be charged, and perform power transmission on them, so as to extend the endurance performance of the entire system, and increase the safety and real-time performance of the monitored object. That is, because the Mesh network has excellent dynamic performance and can self-organize a network under weak signal conditions, which can ensure the stability of data transmission. Therefore, by using the Mesh network to transfer energy between devices, it can avoid the problem that the traditional Mesh network collapses due to power problems when processing a large amount of data, and improve the endurance performance of the devices; at the same time, the power management module can effectively avoid problems such as overcharging, over-discharging of single batteries and some batteries being in an undercharged state. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 FIG. is a schematic structural diagram of a wireless power transmission system applied to a MESH network provided in an embodiment;

[0042] Figure 2 FIG. is a schematic diagram of wireless power transmission provided in an embodiment;

[0043] Figure 3 FIG. is a schematic internal diagram of a Mesh node provided in an embodiment;

[0044] Figure 4 FIG. is a schematic flowchart of a wireless power transmission method applied to a MESH network provided in an embodiment;

[0045] Figure 5 FIG. is a Mesh networking flowchart provided in an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] Embodiment 1:

[0048] Refer to Figures 1 to 3 , a wireless power transmission system applied to a MESH network provided in the embodiment of the present invention, the system includes:

[0049] System management host, relay routing device, sensor device, built-in Mesh communication module, wireless power transmission device, battery management device; and the wireless power transmission device is connected to the battery management device, and the wireless power transmission device is connected to the built-in Mesh communication module. The system management host, relay routing device and built-in Mesh communication module are interconnected through a Mesh network. The sensor device is used to detect information of the monitored object, and the battery management module is used to detect the voltage signal of the battery pack and balance the voltages of each single battery in the battery pack during charging; the monitoring system management host is connected to the relay routing device through a 4G network, and the monitoring system management host is used to receive the information detected by the sensor device and comprehensively analyze the information to judge the working state of the detected object.

[0050] The battery management device includes: an SOC estimation module and an equalization module. The SOC estimation module is used to calculate the real-time power information of the battery pack; the equalization module is used to balance the voltages of each single battery during the charging process to avoid overcharging or over-discharging of one or some batteries.

[0051] The built-in Mesh communication module is used to collect the remaining power information of the battery, the ID number of this node and the distance information from the cluster head node, package them into data packets and send them to the upper-layer relay routing device together with the information collected by the sensor, and send the data processed by the cluster head node control module to itself and suitable nodes according to the comprehensive processing information, control its wireless power transmission device, and control the charging and discharging work of the node; the system management host is connected to the relay routing device through a 4G network, receives the collected information transmitted by the sensor device, and comprehensively analyzes the information to judge the working state of the monitored object.

[0052] The wireless power transmission device is arranged in each node and mainly consists of a transmitting part and a receiving part. The transmitting part includes a rectifier filter, an inverter circuit and a transmitting mechanism. The transmitting mechanism consists of a wound coil. The receiving part includes a receiving mechanism and an electrical device. The receiving mechanism consists of a wound coil and is placed in parallel with the transmitting end at a short distance. The wireless power transmission device includes: a DC-DC module for adjusting the battery voltage to a fixed value, an inverter module for converting the DC voltage into an AC voltage, a transmitting mechanism for transmitting energy and a receiving mechanism for receiving energy, an energy conversion module for converting the received electrical energy, that is, a rectifier filter module, a module for inputting a modulation signal, and a metal shell for protection. Among them, the control starting device of the wireless power device is connected to the DC-DC module, the DC-DC module is connected to the inverter module, the inverter module is connected to the transmitting mechanism, the receiving mechanism is connected to the rectifier filter module, the rectifier filter module is connected to the modulation signal module, and the modulation signal module is connected to the battery pack.

[0053] The battery management module is also arranged at each node. Its main purpose is to obtain the real-time power information of the battery pack and solve the problem of inconsistent charging efficiency of each single battery in each battery pack. Since there are many single batteries in the battery pack in the present invention, a centralized non-energy-dissipating type equalization circuit topology is adopted, that is, the batteries in the battery pack are simultaneously connected to a winding. In this way, the receiving end of the system's wireless charging module needs to be divided into several parts and connected to both ends of the battery pack, and the number thereof needs to be equal to the number of batteries in the battery pack.

[0054] Specifically, referring to Figure 2 and Figure 3 An application of a wireless power transmission system in a MESH network provided by an embodiment of the present invention, the system includes: a wireless power transmission device 1, a Mesh terminal node 2, a relay routing device 17, and a system management host 18.

[0055] The Mesh node 16 includes a wireless power transmission device 1, a transmitting mechanism 4 and a receiving mechanism 5 of the wireless power transmission device, a control wireless power transmission system start module 8, a wireless power transmission load module 9, a built-in battery pack 10, a battery management module 11, a Mesh communication module 12, sensor devices 13 and 14, and a metal shell 15 for protection. The built-in Mesh communication module 12 is connected to the battery pack 10 and the battery pack voltage detection module 17. The battery pack 10 is connected to the battery management module 11 and the wireless power transmission load module 9. The transmitting mechanism 4 of the wireless power transmission device, the wireless power transmission device 1, and the receiving mechanism 5 of the wireless power transmission device are connected in sequence. The built-in Mesh communication module 12 is connected to the start device 8 of the wireless power transmission system. Both the sensor device 13 and the sensor device 14 are connected to the built-in Mesh communication module 12.

[0056] The wireless sensor 1 includes: a DC-DC module 2 for adjusting the battery voltage to a fixed value, an inverter module 3 for converting the DC voltage into an AC voltage, a transmitting mechanism 4 for transmitting energy and a receiving mechanism 5 for receiving energy, an energy conversion module for converting the received electric energy, that is, a rectifier filter module 6, a module 7 for inputting a modulation signal, and a metal shell 10 for protection. Among them, the control wireless power device start device 8 is connected to the DC-DC module 2, the DC-DC module 2 is connected to the inverter module 3, the inverter module 3 is connected to the transmitting mechanism 4, the receiving mechanism 5 is connected to the rectifier filter module 6, the rectifier filter module 6 is connected to the modulation signal module 7, and the modulation signal module 7 is connected to the battery pack 10.

[0057] Embodiment 2

[0058] A wireless power transmission method applied to a MESH network provided by an embodiment of the present invention, the method includes:

[0059] The battery pack voltage detection module periodically collects the voltage of the battery pack, feeds it back to the built-in Mesh communication module, calculates the SOC of the battery pack, and sends it together with the information collected by the sensor device and the sensor device periodically, the distance between the node and its parent node, and the ID number of the child node to the upper layer node.

[0060] After receiving the information sent by the child node, the upper layer node first determines whether its own node needs to be charged. If it needs to be charged, it selects a suitable child node to charge it according to the distance information fed back by the node and in combination with the SOC of the battery pack of the node, and sends control information to the start module of the wireless power transmission device between the selected child node and itself, starts the wireless power transmission device, and starts the charging work of the selected child node to the parent node until the battery SOC threshold of the charging node or the discharging node is reached, and stops the charging work; if the parent node does not need to be charged, it analyzes and judges whether there are nodes with low battery power in the cluster, and selects a suitable child node to charge it by synthesizing the distance information and the remaining battery power information.

[0061] Specifically, the sensor device collects the relevant information of the object to be detected, sends it to the built-in Mesh communication module, converts the data information, and sends it to the upper layer node through the Mesh network. Here, the upper layer node is defined as the cluster head node, and the lower layer node that transmits the data information to it is defined as the cluster. At the same time, the ID number of the node, the remaining battery power information, and the distance between the node and the cluster head node are also sent together with the monitoring information data. At the cluster head node, it analyzes and judges whether there are nodes in the cluster in an undercharged state, and selects a suitable node to charge it according to the distance information until the charging node reaches the specified battery power or the discharging node reaches the lowest working battery power. The cluster head node erases the node battery power and distance information, and so on for the battery power information. The detected data information is transmitted to the system management host, and after analysis and judgment, a control signal is sent to regulate the terminal execution device through the relay routing device to perform corresponding work.

[0062] Furthermore, for the wireless power transmission method applied to the wireless MESH network, the specific process of Mesh network networking includes:

[0063] The monitoring system management host is powered on and sends a command to the nearest relay routing device. The nearest relay routing device serves as the root node and starts self-organizing the network.

[0064] The root node connects to other relay routing devices within the reach of the connection signal to form the second layer. The relay routing devices in the second layer send beacon frames to the relay routing devices within the reach of the signal. After receiving the beacon frames requesting connection, the relay routing devices connect according to the following principles: preferentially connect to the relay routing device with fewer child nodes; if the number of child nodes is the same, connect to the relay routing device with stronger signal; if the signal strengths are the same, randomly connect to one. After the third layer is formed, other layers will be formed according to the same principle, and finally the networking of the relay routing devices will be completed.

[0065] The relay routing device with the largest number of layers sends beacon frames to the temperature sensor acquisition terminals and camera terminals within the reach, and also completes the networking of subsequent layers according to the same networking principle as that of the relay routing devices.

[0066] Furthermore, for the wireless power transmission method applied to the wireless MESH network, the specific process of the charge and discharge management of the Mesh network nodes includes:

[0067] When a relay routing device with a larger number of layers sends data packets to a relay routing device with a smaller number of layers in the Mesh network, it should carry the remaining battery power of its own device and the device ID at the same time. These data are compared and judged at the system management host, and the ID of the device that needs to be charged and the ID of the device with more remaining power are recorded. According to the distance priority principle, the device with sufficient remaining power that is closest to the device that needs to be charged is judged, and a signal is sent to the corresponding device through the Mesh network. After the device receives the response signal, it starts its own wireless charging module to perform the charge and discharge work of the battery.

[0068] Furthermore, for the wireless power transmission method applied to the wireless MESH, the specific process of the SOC estimation module of the battery management device includes:

[0069] SOC is the state of charge of the battery, which is expressed as the ratio of the remaining battery power (i.e., the power that can be discharged by the battery under a given discharge rate and ambient temperature) to the actual capacity measured by the battery under the same discharge conditions. Since the SOC value needs to be calculated when the node is in a non-working static state, the current parameter information of the battery is measured, and then the ampere-hour integration method is combined with the open-circuit voltage method to calculate the SOC of the battery pack.

[0070] Furthermore, for the wireless power transmission method applied to the wireless MESH, the specific process of the equalization processing module of the battery management device includes:

[0071] When the system detects that the power of a single battery is too low (the voltage difference of the single battery exceeds 1% of the single battery voltage), the energy of the single battery with too high voltage is transferred to the weaker battery through coil coupling. However, when the unit board collects the data of the battery pack, it sends the data to the main control module of the battery management system, and the battery equalization system starts to function until the actual voltage values of all single batteries are stabilized near the average value, thus completing the equalization management. At the same time, an uninterrupted equalization effect can be achieved when the system is functioning.

[0072] Furthermore, the specific process of Mesh network networking includes:

[0073] The management host is powered on and sends a command to the nearest relay routing device. The nearest relay routing device serves as the root node and starts self-networking.

[0074] The root node connects to other relay routing devices within the reach of its signal to form the second layer. The relay routing devices in the second layer send beacon frames to the relay routing devices within the reach of their signals. After receiving the beacon frames requesting connection, the relay routing devices connect according to the following principles: preferentially connect to the relay routing device with fewer child nodes; if the number of child nodes is the same, connect to the relay routing device with stronger signal. If the signal strengths are the same, a random connection will be made. After the third layer is formed, other layers will be formed according to the same principle, and finally the networking of the relay routing devices will be completed.

[0075] The relay routing device with the largest number of layers sends beacon frames to the temperature sensor acquisition terminals and camera terminals within the reach of its signal. Similarly, the subsequent layer networking is completed according to the same networking principle as that of the relay routing device.

[0076] Furthermore, the specific process of the battery management module includes:

[0077] The battery management module periodically detects the current of the battery pack, calculates the real-time SOC value of the battery pack, and sends information to the cluster head node through the Mesh network. After receiving the information, the cluster head node first determines whether its own battery pack needs to be charged. If the battery pack is in a power-deficient state, it selects a suitable child node to charge it according to the distance information and power information sent by each node; if the cluster head node does not need to be charged, it determines which node needs to be charged according to the power information sent by the node, selects a suitable adjacent node to charge it, and sends information to the built-in Mesh communication modules of the two child nodes to start the wireless power transmission devices of each to perform the charge and discharge work.

[0078] See Figures 4 to 5 , a wireless power transmission method applied to a Mesh network provided by an embodiment of the present invention includes the following steps:

[0079] The battery pack current detection module 17 periodically collects the current of the battery pack 10, feeds it back to the built-in Mesh communication module 12, calculates the SOC of the battery pack 10, and sends it together with the information periodically collected by the sensor devices 13 and 14, the distance of the node from the parent node, and the ID number of the child node to the upper-layer node.

[0080] After receiving the information sent by the child node, the upper-layer node first determines whether its own node needs to be charged. If it needs to be charged, it selects a suitable child node for charging according to the distance information fed back by the node and in combination with the SOC of the battery pack of the node, and sends control information to the start module 8 of the wireless power transmission device of the selected child node and itself, starts the wireless power transmission device 1, starts the charging work of the selected child node to the parent node, and stops the charging work when the battery SOC threshold of the charging node or the discharging node is reached; if the parent node does not need to be charged, it analyzes and judges whether there are nodes with low battery power in the cluster, and selects a suitable child node for charging by integrating the distance information and the remaining power information.

[0081] Furthermore, for the wireless power transmission system and method applied to the Mesh network, the specific processing steps of the wireless power transmission device 1 include:

[0082] According to the control information of the built-in Mesh communication module 12, control the start module 8 of the wireless power transmission device to start.

[0083] After the wireless power transmission device 1 is started, the voltage of the battery pack 10 is adjusted to a fixed voltage value by the DC-DC module 2 and supplied to the inverter module 3. Then, the inverter module 3 converts the direct current with a fixed value into an alternating current with a certain frequency and supplies it to the transmitting mechanism 4. The receiving mechanism 5 obtains energy in the alternating magnetic field generated at the transmitting end, converts it into alternating current, and this electric energy passes through the energy conversion (rectification and filtering) module 6, and then is modulated by the modulation signal module 7 and supplied to the battery pack 10.

[0084] When the wireless power transmission device 1 charges the battery pack 10, the battery management module 11 solves the problem of inconsistent charging efficiency of each single battery. The load module 9 of the wireless power transmission device 1 is divided into several parts and connected to both ends of the battery pack 10, and the number is equal to the number of battery packs. When the built-in Mesh communication system 12 detects that the voltage of a certain single battery is too low, the energy of the single battery with too high voltage is transferred to the battery with lower energy through coil coupling.

[0085] Furthermore, for the wireless power transmission system and method applied to the Mesh network, the specific process of Mesh network networking includes:

[0086] The monitoring system management host is powered on, and a command is sent to the nearest relay routing device. The nearest relay routing device serves as the root node and starts self-organizing the network.

[0087] The root node connects to other relay routing devices within the reach of the signal to form the second layer. The relay routing devices in the second layer send beacon frames to the relay routing devices within the reach of the signal. After receiving the beacon frames requesting connection, the relay routing devices connect according to the following principles: preferentially connect to relay routing devices with fewer child nodes; if the number of child nodes is the same, connect to the relay routing device with stronger signal. If the signal strength is the same, one will be connected randomly. After the third layer is formed, other layers will be formed according to the same principle, and finally the networking of relay routing devices will be completed.

[0088] The relay routing device with the largest number of layers sends a beacon frame to the sensor device 13 and the sensor device 14 within the reachable range, and also completes the networking of subsequent layers according to the same networking principle as the relay routing device.

[0089] Furthermore, the edge computing network system monitoring method based on Mesh network applied to cable joint monitoring, the specific process of Mesh network self-recovery includes:

[0090] If the root node is disconnected, the monitoring system management host needs to resend the command to select the root node; if the relay routing device 3, sensor device 13 or sensor device 14 is disconnected, all devices whose layers are greater than the layer number of the disconnected device are disconnected, and the network is re-established according to the networking rules.

[0091] In summary, the embodiments of the present invention provide a wireless power transmission system and method for Mesh network, which include a system management host, a relay routing device, a sensor device, a built-in Mesh communication module, a wireless power transmission device, and a battery management device; the wireless power transmission device includes a DC-DC module, a transmitting and receiving mechanism, and a rectifier filter module; the node also includes a battery pack current detection module and a battery management module; the battery pack current detection module detects the real-time current of the battery pack, determines the battery power percentage of the battery pack through calculation, and transmits it to the upper node to determine whether other nodes need to charge it. If necessary, the internal wireless power transmission device is started through the Mesh communication module to charge the battery pack. After the power of the nodes in the cluster is adjusted, the efficiency of the battery power in the node can be achieved, thereby improving the endurance performance of the Mesh network.

[0092] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A wireless power transmission system applied to a MESH network, the MESH network comprising: A system management host, a relay routing device connected to the system management host, and nodes at all levels connected to the relay routing device; characterized in that, The system includes: built-in MESH communication modules and wireless energy transmission devices provided in all nodes; The built-in MESH communication module is used to transmit the remaining battery power, ID number, and distance from the cluster head node of the corresponding node; The system management host is used to compare and judge the remaining battery power of the battery packs corresponding to each node, record the ID numbers of the nodes that need to be charged and the ID numbers of the nodes whose remaining power is more than the threshold power; according to the distance priority principle, judge the node with the remaining power allowed and the closest distance to the node that needs to be charged; and send a charging control signal to the node that needs to be charged and a discharging control signal to the node with the remaining power allowed and the closest distance to the node that needs to be charged through the MESH network to activate the corresponding wireless energy transmission device; The wireless energy transmission device, when started, is used to charge and discharge the battery pack in the corresponding node through wireless power transmission.

2. The wireless power transmission system applied to the MESH network according to claim 1, wherein The MESH network includes: The relay routing device is called the root node of the MESH network, the upper-layer node is defined as the cluster head node, and the lower-layer node that transmits data information to the cluster head node is defined as a cluster.

3. The wireless power transmission system applied to the MESH network according to claim 1, characterized in that, It also includes: Sensor devices, which are provided in each node of the MESH network; And the sensor device includes: a temperature sensor acquisition terminal and a camera terminal.

4. The wireless power transmission system applied to a MESH network according to claim 1, characterized in that, The wireless energy transmission device includes: a transmitting part and a receiving part; The transmitting part includes: a DC-DC module, an inverter circuit, and a transmitting mechanism composed of a wound coil, which are electrically connected in sequence; The receiving part includes: a receiving mechanism composed of a wound coil, a rectifying and filtering module, and a modulation signal module, which are electrically connected in sequence, and the receiving mechanism is arranged in parallel with the transmitting mechanism at a close distance; among them, the modulation signal module is connected to the battery pack in the node.

5. The wireless power transmission system applied to the MESH network according to claim 4, characterized in that, It also includes: Battery management devices, which are provided in each node of the MESH network; And the battery management device includes: A current detection module, whose input end is connected to the battery pack, and is used to collect the output current of the battery pack; A remaining power estimation module, which is used to calculate the state of charge SOC of the battery according to the output current by using the ampere-hour integration method combined with the open-circuit voltage method; among them, the state of charge SOC of the battery is the ratio of the remaining battery power to the actual capacity measured under the same discharge conditions of the battery; An equalization module, whose input end is connected to the output end of the modulation signal module and the output end is connected to the battery pack; it is used to adopt a centralized non-energy-dissipating equalization circuit topology structure, that is, a winding is connected to each single battery of the battery pack at the same time. When the voltage difference between the single batteries in the battery pack exceeds 1% of the single battery voltage, the energy of the high-voltage single battery is transferred to the low-voltage battery through coil coupling until the actual voltage values of each single battery are stabilized at the average value to complete the equalization management of the battery pack.

6. A wireless power transmission method applied to a MESH network, characterized in that, It includes: Construct a MESH network; Within the MESH network, the MESH communication modules in each node send the remaining battery power, ID number, and distance from the cluster head node of their own nodes to the system management host through nodes with a larger layer number to nodes with a smaller layer number; The system management host compares and judges the remaining battery power corresponding to each node, records the ID numbers of the nodes that need to be charged and the ID numbers of the nodes whose remaining power is more than the threshold power; according to the distance priority principle, it judges the node with sufficient remaining power that is closest to the node that needs to be charged; And sends a charging control signal to the node that needs to be charged and a discharging control signal to the node with sufficient remaining power that is closest to the node that needs to be charged through the MESH network to activate the corresponding wireless power transfer device; After the wireless power transfer device in the node is activated, the wireless power transfer device charges and discharges the battery pack through wireless power transmission.

7. The wireless power transmission method applied to a MESH network according to claim 6, wherein, The construction of the MESH network specifically includes: The system management host powers on and sends a command to the nearest relay routing device. The nearest relay routing device serves as the root node and starts self-organizing the network; The root node connects to other relay routing devices within the reach of the signal to form the second layer; The relay routing devices in the second layer send beacon frames to the relay routing devices within the reach of the signal. After receiving the beacon frames requesting connection, the relay routing devices connect according to the following principles: preferentially connect to the relay routing device with fewer child nodes; if the number of child nodes is the same, connect to the relay routing device with a stronger signal. If the signal strengths are the same, randomly connect to one to form the third layer; After the third layer is formed, other layers are formed according to the same network formation principle to complete the network formation of the relay routing devices.

8. The wireless power transmission method applied to a MESH network according to claim 7, characterized in that, It also includes: The relay routing device with the largest layer number in the MESH network sends beacon frames to the temperature sensor acquisition terminals and camera terminals within the reach, and completes the network formation of subsequent layers according to the same network formation principle; Among them, for the monitoring data obtained by the temperature sensor acquisition terminals and camera terminals, it is transmitted to the system management host through the MESH network.

9. The wireless power transmission method applied to a MESH network according to claim 6, characterized in that, The determination of the remaining battery power specifically includes: Regularly obtain the output current of the battery pack; According to the output current, use the ampere-hour integration method combined with the open-circuit voltage method to calculate the state of charge SOC of the battery; where the state of charge SOC of the battery is the ratio of the remaining battery power to the actual capacity measured under the same discharge conditions of the battery; Determine the remaining battery power according to the state of charge SOC of the battery.

10. The wireless power transmission method applied to a MESH network according to claim 6, wherein It also includes: When it is detected that the voltage difference between the single cells in the battery pack exceeds 1% of the single cell voltage, the energy of the high-voltage single cell is transferred to the low-voltage battery through coil coupling until the actual voltage values of each single cell are stabilized at the average value to complete the equalization management of the battery pack.

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