Optical communication control circuit suitable for unmanned electric forklift

Abstract

The utility model relates to an optical communication control circuit suitable for an unmanned electric forklift, which comprises an unmanned forklift control unit, an optical communication control unit and an optical communication Ethernet unit, and the output end of the unmanned forklift control unit is connected with the input end of the optical communication control unit. And the optical communication control unit is interactively connected with the optical communication Ethernet unit. According to the utility model, optical communication data exchange of large-scale data can be completed only by adopting the low-data-bearing-capacity optical communication module which is relatively low in price, and meanwhile, the optical communication module is larger than a traditional optical communication module with high data bearing capacity in a data receiving and transmitting window. The data exchange capacity is high, and a larger data receiving and transmitting window is achieved.

Description

Technical Field

[0001] The utility model relates to an optical communication control circuit suitable for an unmanned electric forklift. Background Art

[0002] As technology develops, the capacity and efficiency of optical communications continue to improve. The development of dense wavelength division multiplexing technology enables more independent signals to be transmitted on a single optical fiber, greatly increasing the data transmission capacity of the network. In the 21st century, with the explosive growth of the Internet, optical communication technology has become the infrastructure for global data exchange. Fiber optic networks continue to expand, connecting data centers around the world, providing the basis for high-speed Internet and cloud computing. In recent years, optical communication technology has begun to extend to a wider range of fields, such as applications in automation and logistics. AGV unmanned forklifts and other automated equipment have begun to adopt optical communication technologies such as laser navigation and fiber optic data networks to achieve high-speed, stable communication and precise positioning. In the context of industrial Internet of Things and intelligent manufacturing, optical communication technology plays an increasingly critical role. Sensors and robots connected by fiber optic networks provide factories with real-time monitoring and data analysis, making production lines more intelligent and flexible. As research on optical communications continues to advance, the prospects for optical communication technology are even broader. Optical communications promise to provide security that is almost impossible to crack.

[0003] Traditional optical communication has poor transmission stability. The transmitting port and receiving port of optical communication need to be within a very small deviation threshold for stable reception. Although there are devices with larger transmission on the market, the amount of data they can carry is small and cannot meet the needs of fast-moving industrial automation equipment. They can only meet the needs of traditional fixed-point automation equipment.

[0004] The existing optical communication transmission adds a data exchange module on the basis of the original optical communication module. Through the data exchange module, the responsible instructions for controlling the unmanned electric forklift can be integrated into the controller. It is only necessary to transmit simple control signals to the exchange module through traditional optical communication equipment, and complex control instructions are further set in the exchange module. The exchange module is connected to the logic controller, the logic controller is connected to the traditional network communication module, and the data is finally exchanged to the host computer system.

[0005] Existing unmanned electric forklift dispatching systems are often based on wireless network communication. Traditional wireless network technology may encounter the following limitations in the military, national defense and lithium battery industries:

[0006] Security issues: In the military and defense industries, data security and confidentiality of communications are critical. Traditional wireless networks may face security threats such as hacker attacks, data leaks, and unauthorized access. Encryption and security protocols may not be enough to prevent advanced persistent threats. Security is particularly important in the manufacturing process of the military and defense industries. Optical communication data transmission is safer from eavesdropping and interference because data is transmitted through light beams rather than radio waves.

[0007] Interference and reliability: Wireless communications in the military and defense fields need to maintain high reliability even under extreme conditions. Traditional wireless networks may be affected by physical environmental interference, electromagnetic interference or electromagnetic pulses, which may cause communication interruption or data loss.

[0008] Electromagnetic compatibility: Especially in the lithium battery industry, traditional wireless network equipment may generate electromagnetic interference, which may affect the battery charging and discharging process and the normal operation of the battery management system.

[0009] Interference and noise: Traditional wireless networks are susceptible to electromagnetic interference from equipment, metal reflections, and other electronic devices in production environments.

[0010] Data transmission speed and bandwidth: Optical communications such as fiber optics can provide data transmission speeds and bandwidth far higher than traditional wireless networks.

[0011] At present, most of the optical communication equipment on the market that transmits Ethernet networks has strict requirements on the transmission window and receiving window range. At the same time, optical communication equipment with large window range requirements can only carry a lower amount of data. As a fast-moving and large-sized device, unmanned electric forklifts cannot provide a large transmission window for optical communication data transmission. At the same time, unmanned electric forklifts need to transmit a large amount of data to the upper-level scheduling control system, and low-data-volume carrying equipment cannot achieve real-time optical communication massive data docking.

[0012] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a new structure of optical communication control circuit suitable for unmanned electric forklifts, making it more valuable for industrial use. Utility Model Content

[0013] In order to solve the above technical problems, the purpose of the utility model is to provide an optical communication control circuit suitable for an unmanned electric forklift.

[0014] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0015] An optical communication control circuit suitable for an unmanned electric forklift, comprising an unmanned forklift control unit, an optical communication control unit and an optical communication Ethernet unit, wherein the output end of the unmanned forklift control unit is connected to the input end of the optical communication control unit, and the optical communication control unit is interconnected with the optical communication Ethernet unit;

[0016] The optical communication control unit includes an optical communication control module, an optical communication network module and a first optical communication device, the input end of the optical communication control module is connected to the output end of the unmanned forklift control unit, the output end of the optical communication control module is connected to the input end of the optical communication network module, the output end of the optical communication network module is connected to the input end of the first optical communication device, and the first optical communication device interacts with the optical communication control unit in communication;

[0017] The optical communication Ethernet unit comprises a second optical communication device and a server, the second optical communication device is interconnected with the first optical communication device, and an output end of the second optical communication device is connected to the server.

[0018] Preferably, in the optical communication control circuit suitable for an unmanned electric forklift, the optical communication control module is a microcontroller, and its model is STM32F373VCT6.

[0019] Preferably, in the optical communication control circuit suitable for an unmanned electric forklift, the optical communication control module is connected to the optical communication network module via UART.

[0020] Preferably, in the optical communication control circuit suitable for an unmanned electric forklift, the unmanned forklift control unit includes a Navikit control module, an HMI module, a sensor module, a power module, a navigation and positioning module, and a chassis control module. The output ends of the HMI module, the sensor module, and the power module are connected to the input end of the Navikit control module, the control end of the Navikit control module is connected to the controlled ends of the navigation and positioning module and the chassis control module, and the output end of the Navikit control module is connected to the input end of the optical communication control unit.

[0021] By means of the above scheme, the utility model has at least the following advantages:

[0022] 1. This utility model abandons the use of wireless networks for data transmission. All data are transmitted using optical communications to ensure the security of signals to the greatest extent. It can be used in industries such as military industry and lithium battery where the use of wireless signals is prohibited.

[0023] 2. The utility model only needs to use a relatively low-priced low-data-carrying optical communication module to complete the optical communication data exchange of large-scale data. At the same time, the data transceiver window is larger than that of the traditional high-data-carrying optical communication module. Not only is the data exchange capability strong, but there is also a larger data transceiver window.

[0024] 3. The utility model can be connected to mainstream unmanned electric forklift equipment on the market, without the need for cumbersome secondary transformation and without destroying the original circuit control of the equipment. Only optical communication modules and optical communication control circuits need to be added to communicate. This improves the deployment efficiency of the project and reduces construction costs.

[0025] 3. This utility model does not require complicated control instructions, and the instruction set is pre-burned in the optical communication control signal circuit (single-chip microcomputer), which reduces the user's learning cost.

[0026] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a principle block diagram of the utility model;

[0029] Figure 2 It is the actual circuit diagram of the optical communication control unit of the utility model;

[0030] Figure 3 It is the actual circuit diagram of the unmanned forklift control unit of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] Example

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, an optical communication control circuit suitable for an unmanned electric forklift includes an unmanned forklift control unit 1, an optical communication control unit 2 and an optical communication Ethernet unit 3, wherein the unmanned forklift control unit 1 is interconnected with the optical communication control unit 2, and the optical communication control unit 2 is interconnected with the optical communication Ethernet unit 3;

[0035] The optical communication control unit 2 includes an optical communication control module 21, an optical communication network module 22 and a first optical communication device 23. The optical communication control module 21 is interactively connected with the unmanned forklift control unit 1. The output end of the optical communication control module 21 is connected to the input end of the optical communication network module 22. The output end of the optical communication network module 22 is connected to the input end of the first optical communication device 23. The first optical communication device 23 is interactively communicated with the optical communication control unit 2.

[0036] The optical communication Ethernet unit 3 includes a second optical communication device 31 and a server 32 . The second optical communication device 31 is interconnected with the first optical communication device 23 , and an output end of the second optical communication device 31 is connected to the server 32 .

[0037] The optical communication control module 21 in the present invention is a microcontroller, whose model is STM32F373VCT6, wherein the optical communication control module 21 is connected to the optical communication network module 22 via UART.

[0038] The unmanned forklift control unit 1 in the utility model includes a Navikit control module 11, an HMI module 12, a sensor module 13, a power module, a navigation and positioning module 14, and a chassis control module 15. The output ends of the HMI module 12, the sensor module 13 and the power module are connected to the input end of the Navikit control module 11, the control end of the Navikit control module 11 is connected to the controlled ends of the navigation and positioning module 14 and the chassis control module 15, and the output end of the Navikit control module 11 is connected to the input end of the optical communication control unit 2.

[0039] Among them, the HMI module transmits the user's command data to the core control module; the sensor module is responsible for the collection of information such as positioning navigation, obstacle detection, and cargo information; the power module provides power to the entire unmanned electric forklift and provides battery information. The above data is transmitted to the Navikit control module, and the Navikit control module transmits the data to the optical communication control module, splitting the complex data into simple low-data-volume signals to the host computer, which decodes and restores the complex data.

[0040] The host computer sends simple low-data-volume instructions to the optical communication control module, which packages the control instructions according to the preset control instructions and decoding strategies, converts the simple instructions into complex control instructions, and directly inputs the control instructions to the Navikit control module of the unmanned electric forklift. The Navikit control module will control the chassis control module and navigation and positioning module of the unmanned electric forklift to work.

[0041] The Navikit control module involved in the present utility model is a self-developed chip, and its specific parameters are as follows: https: / / www.kh-robotics.com / .

[0042] The optical communication control module (single-chip microcomputer) will provide multiple input interfaces for docking with the existing optical communication network module. The optical communication network module is connected to the single-chip microcomputer, and the transmitted signals include: system status, operation status, unmanned electric forklift status, safety obstacle avoidance status, laser data, positioning data, navigation data, and forklift handling task list. The optical communication network module communicates with the optical communication control circuit, and sends the corresponding status signal to the Navikit control module through the host computer on the unmanned electric forklift. At the same time, the host computer also sends scheduling control information to the Navikit control module.

[0043] The single-chip computer is installed in the control box of the unmanned electric forklift, and the optical communication control module is connected to the Navikit control module of the unmanned electric forklift via the network communication module. The Navikit control module senses the surrounding situation through external sensors, and distributes the data to the optical communication control module after processing by the Navikit control module. The optical communication control module integrates complex control instructions and the original parameters of various component performance data. Through high-frequency, low-data volume interaction, the data of the unmanned electric forklift is transmitted to the outside through the optical communication module.

[0044] Compared with the existing optical communication module directly connected to the host computer server communication, the utility model improves the diversity of data transmission. It can rely on ordinary optical communication equipment to transmit a lower amount of data to the control module. Complex control instructions are pre-set in the control module. When the upstream controls the unmanned electric forklift, it only needs to send the IO signal value to the data exchange module. The data exchange module will send complex instructions to the unmanned electric forklift control module according to the preset instructions. At the same time, when the unmanned electric forklift needs to return data to the upstream control system, the same low data volume method can also be used for communication. The data exchange module is combined with the ordinary low-cost optical communication module to solve the requirements of the high-speed moving unmanned electric forklift for a large viewing angle of the data receiving window and a large amount of data.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of this application, it should be noted that the terms "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An optical communication control circuit suitable for unmanned electric forklift, characterized in that: The invention comprises an unmanned forklift control unit (1), an optical communication control unit (2) and an optical communication Ethernet unit (3), wherein the unmanned forklift control unit (1) is interconnected with the optical communication control unit (2), and the optical communication control unit (2) is interconnected with the optical communication Ethernet unit (3); The optical communication control unit (2) comprises an optical communication control module (21), an optical communication network module (22) and a first optical communication device (23); the optical communication control module (21) is interconnected with the unmanned forklift control unit (1); the output end of the optical communication control module (21) is connected to the input end of the optical communication network module (22); the output end of the optical communication network module (22) is connected to the input end of the first optical communication device (23); and the first optical communication device (23) is interconnected with the optical communication control unit (2); The optical communication Ethernet unit (3) comprises a second optical communication device (31) and a server (32), wherein the second optical communication device (31) is interconnected with the first optical communication device (23), and an output end of the second optical communication device (31) is connected to the server (32).

2. According to claim 1, an optical communication control circuit suitable for an unmanned electric forklift is characterized in that: The optical communication control module (21) is a microcontroller, and its model is STM32F373VCT6.

3. An optical communication control circuit suitable for an unmanned electric forklift according to claim 1 or 2, characterized in that: The optical communication control module (21) is connected to the optical communication network module (22) via UART.

4. The optical communication control circuit suitable for an unmanned electric forklift according to claim 1, characterized in that: The unmanned forklift control unit (1) comprises a Navikit control module (11), an HMI module (12), a sensor module (13), a power module, a navigation and positioning module (14), and a chassis control module (15); the output ends of the HMI module (12), the sensor module (13), and the power module are connected to the input end of the Navikit control module (11); the control end of the Navikit control module (11) is connected to the controlled ends of the navigation and positioning module (14) and the chassis control module (15); and the output end of the Navikit control module (11) is connected to the input end of the optical communication control unit (2).

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