A method for enabling wireless remote control of an actuator

Abstract

The present application relates to the field of digital information transmission, more particularly to a method for wireless remote control of actuators. The present application specifically comprises the following steps: using a lora narrowband data transmission mode, establishing a star network topology with the actuator end and the handheld device end as nodes, calculating the distance of each node in the star network topology, searching for the node of the actuator end with the shortest distance to the handheld device end, positioning all actuator nodes through the node of the actuator end with the shortest distance, and performing long-distance data transmission and control of multiple actuators. The lora narrowband data transmission mode in the present application has controllable strength, low cost, low power consumption, long service life, wiring-free, strong anti-interference ability, and strong scalability. When there are multiple actuators, the actuators can also communicate with each other, and the star network topology formed in this way can make the transmission distance longer.

Description

Technical Field

[0001] This invention relates to the field of digital information transmission, and more specifically to a method for wireless remote control of actuators. Background Technology

[0002] Currently, in high-altitude operations or complex industrial environments, existing production equipment is often difficult to control. However, manual operation can pose safety hazards, resulting in low efficiency and difficulties in project implementation in complex industrial environments. Wireless remote communication and control, as an intelligent control method, is increasingly being applied to various intelligent devices to reduce the cost of traditional manual operation and expand the application range of equipment. However, current wireless remote communication systems often suffer from issues such as multi-gateway conflicts when dealing with large amounts of data and signal interference during data transmission, severely impacting signal strength and reliability.

[0003] Chinese patent CN106851785B discloses a wireless communication method and system. This patent spreads the LoRa network by adding new LoRa terminals, configuring frequencies, and establishing an ordered set of frequencies. However, the LoRa gateway in this patent uses a queue search mode, which, while reducing channel collisions, lowers the search efficiency of each node in the LoRa network. Chinese patent CN106331134A discloses a LoRa wireless communication network networking method for the Internet of Things (IoT). This patent establishes a geographically based LoRa regional network networking method to form an IoT-based LoRa network. However, the geographically based networking method in this patent does not consider the impact of signal interference from different geographical locations on data transmission, thus affecting the timeliness and reliability of data communication between the LoRa gateway and each node.

[0004] Therefore, in view of the problems existing in the existing LoRa-based wireless communication control methods, the present invention provides a method for realizing wireless remote control of actuators. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a method for wireless remote control of actuators. Specifically, it includes: establishing a star network topology with the actuator end and the handheld device end as nodes using LoRa narrowband data transmission; calculating the distance between each node in the star network topology; searching for the actuator end node with the shortest distance to the handheld device end; locating all actuator nodes through the actuator end node with the shortest distance; and performing long-distance data transmission and control of multiple actuators based on this.

[0006] Preferably, the handheld device specifically includes a battery management unit, a main control unit, a control unit, a display unit, and a wireless unit.

[0007] Preferably, the actuator end specifically includes a main control unit, a control unit, a display unit, and a wireless unit.

[0008] Preferably, the control process for the actuator via wireless remote control is as follows:

[0009] S1. Scan the actuator nodes within the specified area using a handheld device node;

[0010] S2. Calculate the distance between each actuator node and the handheld device node based on the signal strength of each actuator node relative to the handheld device node.

[0011] S3. The handheld device node automatically connects to the actuator node with the shortest distance, and after the connection is successful, the data of the actuator node is transmitted to the handheld device node.

[0012] S4. The handheld device node sends control command data back to the actuator node;

[0013] S5. When the actuator node is not connected to the handheld device node, the handheld device shuts down transmission and enters a low-power state.

[0014] Preferably, the search process for the handheld device node is as follows: after the handheld device is powered on, it starts scanning the actuator device, selects the actuator device, and sends an encrypted calculation command to the actuator.

[0015] Preferably, the actuator node, after receiving the encryption operation instruction, performs decryption operation to obtain the original data, adds the information to be transmitted back to the original data, performs encryption operation again, and then transmits it back to the handheld device to complete one information interaction.

[0016] Preferably, the encryption operation instructions include key query instructions, command query instructions, and data query instructions.

[0017] Preferably, in the distance calculation described in S2, the signal transmission process in the air is mainly affected by the transmission time and the transmission rate.

[0018] Preferably, during the transmission of the signal in the air, interference factors that affect the signal reception strength must be eliminated.

[0019] Preferably, a data transmission timeout and data transmission failure monitoring method is established in the aforementioned transmission time.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The present invention discloses a method for wireless remote control of actuators. By employing a LoRa narrowband data transmission method, data from a handheld device is remotely interacted with and controlled by the actuator over a long distance. This enables remote control of multiple devices in complex construction environments, improving the efficiency of special operations while ensuring the safety of construction personnel. Furthermore, the LoRa narrowband data transmission method described in this invention offers strong controllability, low cost, low power consumption, long lifespan, no wiring required, strong anti-interference capabilities, and strong scalability. When multiple actuators are present, they can communicate with each other, forming a star network topology that allows for even longer transmission distances. Attached Figure Description

[0022] Figure 1 This is a control diagram of a method for achieving wireless remote control of an actuator.

[0023] Figure 2 A method for wireless remote control of an actuator is illustrated in the module diagram of the actuator end and the handheld device end.

[0024] Figure 3 (a) is a flowchart of the search process for a handheld device node in a method for realizing wireless remote control of an actuator, and (b) is a flowchart of the control process for wireless remote control of an actuator in a method for realizing wireless remote control of an actuator. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The method for enabling wireless remote control of actuators described in this embodiment specifically includes: establishing a star network topology with the actuator end and the handheld device end as nodes using LoRa narrowband data transmission; calculating the distance between each node in the star network topology; searching for the actuator end node with the shortest distance to the handheld device end; locating all actuator nodes through the actuator end node with the shortest distance; and performing long-distance data transmission and control of multiple actuators based on this.

[0029] Specifically, by establishing a star network topology, this invention can also enable interconnection and communication control between actuators. When a handheld device needs to control an actuator, it only needs to search for and match the corresponding actuator device name and IP address to remotely control the actuator.

[0030] like Figure 1 As shown, the handheld device in this invention can control multiple actuators simultaneously by selecting an actuator, and can also control the connection between actuators simultaneously by establishing a star network topology.

[0031] In one implementation, such as Figure 2 As shown, the handheld device specifically includes a battery management unit, a main control unit, a control unit, a display unit, and a wireless unit; the actuator specifically includes a main control unit, a control unit, a display unit, and a wireless unit.

[0032] Specifically, in this invention, the handheld device and the actuator end use an MCU as the running carrier of the software algorithm in the wireless remote control method, and the wireless transmission device involved serves as the transmission medium.

[0033] In one embodiment, the control flow for the actuator's wireless remote control is as follows:

[0034] S1. Scan the actuator nodes within the specified area using a handheld device node;

[0035] S2. Calculate the distance between each actuator node and the handheld device node based on the signal strength of each actuator node relative to the handheld device node.

[0036] S3. The handheld device node automatically connects to the actuator node with the shortest distance, and after the connection is successful, the data of the actuator node is transmitted to the handheld device node.

[0037] S4. The handheld device node sends control command data back to the actuator node;

[0038] S5. When the actuator node is not connected to the handheld device node, the handheld device shuts down transmission and enters a low-power state.

[0039] Specifically, such as Figure 3 As shown in (b), a method for realizing wireless remote control of an actuator is as follows: the control flow of the actuator wireless remote control is as follows: wait for a query command; if there is no command, it goes into sleep mode; if there is a command, the command is decrypted, including key query command, command query command, and data query command. After the relevant command is transmitted to the handheld device node, it is encrypted and then the reply data is sent to the actuator node to control the actuator to execute. After that, the data is fed back to the handheld device node for cyclic control operation.

[0040] Specifically, the signal transmission distance is affected by the data transmission speed and data transmission time. The data transmission speed is further affected by the spreading factor and signal bandwidth corresponding to a single signal. In the distance calculation described in S2, the distribution area of ​​each actuator node is first defined with the handheld device node as the center. The signals in each channel of each actuator node are initially timestamped. Based on this, the actuator node with the strongest signal strength is captured. When multiple handheld device nodes experience data conflicts, the actual distance is used as the primary criterion for determining the priority of the receiving handheld device node.

[0041] In one implementation, the search process for the handheld device node is as follows: after the handheld device is powered on, it starts scanning the actuator device, selects the actuator device, and sends an encrypted operation command to the actuator.

[0042] like Figure 3As shown in (a), the search process of the handheld device node is as follows: the handheld device is powered on, scans the actuator end and selects the device, performs encryption operation on the instruction, sends the instruction to the actuator node, waits to receive the instruction, performs decryption operation on the received feedback data and displays the information, and sends the control information back to the instruction encryption operation step to perform cyclic control operation.

[0043] In one implementation, the actuator node receives an encryption operation instruction, performs a decryption operation to obtain the original data, adds the information to be transmitted back to the original data, performs a re-encryption operation, and then transmits it back to the handheld device to complete an information interaction.

[0044] Specifically, the LoRa narrowband data transmission method described in this invention avoids data conflicts during data reception by the LoRa gateway due to the large number of data nodes and the large amount of data transmitted simultaneously during multi-actuator control. A distance-based data node acquisition method is established. When the signal strength captured by the LoRa gateway is within the same range, the actual distance between the corresponding signal and the LoRa gateway is used as the second priority for acquiring signals within a specified channel, thereby achieving LoRa narrowband data transmission control under large data volume and multiple data nodes.

[0045] In one implementation, the encryption operation instructions include key query instructions, command query instructions, and data query instructions.

[0046] In one implementation, the distance calculation described in S2 is mainly affected by the transmission time and transmission rate during signal transmission in the air.

[0047] Specifically, in the distance-based data node capture method described in this invention, the accuracy of distance calculation for data transmission is improved by optimizing and controlling the transmission time, transmission rate, and interference factors encountered by the signal during air transmission. In particular, based on the summary and analysis of the transmission time, a data transmission timeout and data transmission fault monitoring method is established to further improve the reliability of data transmission at each actuator end.

[0048] In one implementation, during the transmission of the signal in the air, interference factors that affect the signal reception strength need to be eliminated.

[0049] Specifically, the aforementioned interference factors are mitigated by adding a relay filter at the midpoint between the actuator end node and the handheld device end to filter out external interference factors during signal transmission. At the same time, the relay filter is amplified by adding an amplifier circuit to perform signal relay operations at the remote actuator end node.

[0050] In one implementation, a data transmission timeout and data transmission failure monitoring method is established during the transmission time.

[0051] In one implementation, in the distance calculation described in S2, the distribution area of ​​each actuator node is first defined with the handheld device node as the center, and the signals in each channel of each actuator node are initially timestamped. Based on this, the actuator node with the strongest signal strength is captured. When multiple handheld device nodes have data conflicts, the actual distance is used as the priority to determine the receiving handheld device node.

[0052] In summary, the method for wireless remote control of actuators described in this invention addresses scenarios requiring long-distance control or where operation is inconvenient in complex environments. By using LoRa narrowband data transmission, it enables remote wireless control through point-to-point or point-to-multiple actuator communication, thus solving the problem of operators being able to perform general operations, status queries, and parameter settings on actuators without being physically present on-site. Furthermore, its wireless nature eliminates the need for wiring, reducing production and maintenance costs.

[0053] This invention relates to the field of logistics technology, specifically to a method for collaborative management of logistics capacity information by drivers. The invention establishes a logistics capacity profile based on actual logistics transportation needs. This profile categorizes logistics transportation needs according to logistics transportation conditions, thereby generating a logistics capacity allocation strategy corresponding to those conditions. The invention then performs a risk monitoring assessment based on the logistics capacity of this allocation strategy. Based on the risk monitoring assessment results, the logistics capacity allocation strategy is automatically supplemented. A second risk monitoring assessment is conducted based on the automatic supplementation, establishing an optimal logistics capacity information management method under limited logistics capacity integration. This invention establishes an optimal logistics capacity information management method under limited logistics capacity integration.

Claims

1. A method for wirelessly remotely controlling an actuator, characterized in that, Specifically, this includes adopting a LoRa narrowband data transmission method, establishing a star network topology with the actuator end and the handheld device end as nodes, calculating the distance between each node in the star network topology, searching for the actuator end node with the shortest distance to the handheld device end, locating all actuator nodes through the actuator end node with the shortest distance, and performing long-distance data transmission and control of multiple actuators on this basis. The handheld device specifically includes a battery management unit, a main control unit, a control unit, a display unit, and a wireless unit; The actuator end specifically includes a main control unit, a control unit, a display unit, and a wireless unit; The control process for the actuator via wireless remote control is as follows: S1. Scan the actuator nodes within the specified area using a handheld device node; S2. Calculate the distance between each actuator node and the handheld device node based on the signal strength of each actuator node relative to the handheld device node. S3. The handheld device node automatically connects to the actuator node with the shortest distance, and after the connection is successful, the data of the actuator node is transmitted to the handheld device node. S4. The handheld device node sends control command data back to the actuator node; S5. When the actuator node is not connected to the handheld device node, the handheld device shuts down transmission and enters a low-power state. The search process for the handheld device node is as follows: after the handheld device is powered on, it starts scanning the actuator device and sends an encrypted operation command to the actuator device after selecting the actuator device. The executor node receives the encryption operation instruction, performs decryption operation to obtain the original data, adds the information to be returned to the original data, performs encryption operation again, and then returns it to the handheld device to complete one information interaction. The encryption operation instructions include key query instructions, command query instructions, and data query instructions; In the distance calculation described in S2, the signal transmission process in the air is mainly affected by the transmission time and the transmission rate. During the transmission of the signal in the air, interference factors that affect the signal reception strength must be eliminated. The aforementioned transmission time includes a method for monitoring data transmission timeout and data transmission failure.

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