CAN (Controller Area Network) communication-to-optical fiber module convenient to expand

Abstract

The utility model relates to the technical field of communication between industrial equipment, and discloses a CAN communication-to-optical fiber module convenient to expand, which comprises a CAN bus transceiving controller, a CAN bus and 5V power supply input interface terminal, a CAN bus and 5V power supply output interface terminal, an optical fiber receiving driving circuit and an optical fiber sending driving circuit, and the CAN bus transceiving controller is correspondingly connected with the CAN bus and the 5V power supply input interface terminal. According to the CAN communication-to-optical fiber module convenient to expand, the CAN bus transceiving controller, the CAN bus and 5V power input interface terminal, the CAN bus and 5V power output interface terminal, the optical fiber receiving drive circuit and the optical fiber sending drive circuit are arranged, so that the effect of optical fiber transmission can be achieved, and compared with a traditional twisted pair transmission mode, the transmission distance of optical fiber transmission is longer; the CAN communication-to-optical fiber module can effectively solve the problem that twisted pair connection is susceptible to electromagnetic interference, ground ring interference and thunder and lightning damage, is easy to expand, and can be realized by conveniently plugging and unplugging the CAN communication-to-optical fiber module according to the number of devices.

Description

Technical Field

[0001] This application relates to the field of communication technology between industrial equipment, specifically a CAN communication to fiber optic module that is easy to expand. Background Technology

[0002] Industrial communication refers to the exchange and transmission of data and information between equipment, systems, and personnel in an industrial environment using various communication technologies and devices. It encompasses multiple aspects such as industrial automation, smart manufacturing, the Internet of Things (IoT), and the Industrial Internet, aiming to improve production efficiency, reduce costs, optimize resource allocation, and enable remote monitoring, control, and maintenance of equipment.

[0003] In the field of industrial communication, CAN bus communication is a common communication method. However, due to the complex industrial environment, direct twisted-pair connection is susceptible to electromagnetic interference, ground loop interference and lightning damage. To solve the above problems, a CAN communication to fiber optic module that is easy to expand is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an easily expandable CAN communication to fiber optic module. By using fiber optic transmission, the reliability, security, and confidentiality of data communication are improved, and the communication distance of the bus is extended.

[0005] To achieve the above objectives, this application provides the following technical solution: a CAN communication to fiber optic module that is easy to expand, comprising a CAN bus transceiver controller, a CAN bus and 5V power input interface terminal, a CAN bus and 5V power output interface terminal, a fiber optic receiving drive circuit and a fiber optic transmitting drive circuit. The CAN bus transceiver controller is connected to the CAN bus and 5V power input interface terminal, and the CAN bus and 5V power output interface terminal is connected to the CAN bus and 5V power input interface terminal. The receiving signal of the CAN bus transceiver controller is connected to the fiber optic receiving drive circuit, and the transmitting signal of the CAN bus transceiver controller is connected to the fiber optic transmitting drive circuit.

[0006] The above scheme achieves fiber optic transmission by using a CAN bus transceiver controller, CAN bus and 5V power input interface terminals, CAN bus and 5V power output interface terminals, fiber optic receiver drive circuit, and fiber optic transmitter drive circuit. Compared with traditional twisted-pair transmission, fiber optic transmission has a longer transmission distance and can effectively solve the problems of electromagnetic interference, ground loop interference, and lightning damage that are easily caused by twisted-pair connections. It is also easy to expand, as the CAN communication to fiber optic module can be easily plugged and unplugged to accommodate the number of devices, making it more practical.

[0007] Furthermore, the easily expandable CAN communication to fiber optic module can be plugged into the side of the main device to form an expanded CAN communication to fiber optic module, which can be connected to other devices via optical cables.

[0008] The above solution allows for easy expansion. If further expansion is needed, simply plug the easily expandable CAN communication to fiber optic module into the side of the previous CAN communication to fiber optic module and connect it to other devices via optical cables. This can be extended to connect N modules to the corresponding N devices. Therefore, the master device can obtain data information from N devices, and other devices can also obtain information from the master device.

[0009] Furthermore, the CAN bus transceiver controller is model SN65HVD1050.

[0010] The above scheme limits the CAN bus transceiver controller model to be able to convert the electrical signals of the CAN bus into optical signals suitable for fiber optic transmission, and vice versa, thus realizing high-speed data transmission and long-distance communication.

[0011] Furthermore, the main device has CAN bus transceiver functionality, and the extended CAN communication to fiber optic module has fiber optic transceiver drive circuitry.

[0012] The above scheme gives the entire system advantages in terms of anti-interference capability, long-distance communication, and data transmission efficiency.

[0013] Furthermore, the PCB circuit board built into the CAN bus transceiver controller is used to integrate the content and is installed in a specific housing.

[0014] The above solution makes the module design more compact, reduces costs, improves production efficiency, and facilitates installation and use.

[0015] Furthermore, the fiber optic interface of the main device uses an LC or SC type fiber optic connector.

[0016] The above solution adapts to common industrial standard fiber optic interfaces, facilitating compatible connections with existing equipment.

[0017] Furthermore, the optical fiber transmission drive circuit is designed to adapt to long-distance optical fiber transmission.

[0018] The above solution enables the module to operate stably over a wider transmission distance.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] This easily expandable CAN communication to fiber optic module, through its CAN bus transceiver controller, CAN bus and 5V power input interface terminals, CAN bus and 5V power output interface terminals, fiber optic receiving drive circuit and fiber optic transmitting drive circuit, can achieve fiber optic transmission. Compared with the traditional twisted-pair transmission method, fiber optic transmission has a longer transmission distance and can effectively solve the problems of electromagnetic interference, ground loop interference and lightning damage that are easily caused by twisted-pair connections. It is also easy to expand, and can be easily plugged and unplugged to accommodate the number of devices, making it more practical. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal composition of the CAN communication to fiber optic module that is easy to expand according to the embodiments of this application.

[0022] Figure 2 This is a schematic diagram showing the connection between the module and the main device and other devices in the embodiments of this application.

[0023] Figure 3 This is the electrical schematic diagram of the CAN communication to fiber optic module in the embodiments of this application.

[0024] Figure 4 This is an electrical schematic diagram of the main device communicating with the module in an embodiment of this application.

[0025] Figure 5 This is an electrical schematic diagram of the fiber optic connection between the device and the module in the embodiment of this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Please see Figure 1 and Figure 2This embodiment presents an easily expandable CAN communication to fiber optic module, comprising a CAN bus transceiver controller, CAN bus and 5V power input interface terminals, CAN bus and 5V power output interface terminals, a fiber optic receiving drive circuit, and a fiber optic transmitting drive circuit. The CAN bus transceiver controller is model SN65HVD1050, which specifies the model of the CAN bus transceiver controller. It realizes high-speed data transmission and long-distance communication, supports CAN data transmission rates up to 1 Mbps, adapts to high-speed data communication requirements, and has strong anti-interference capabilities to ensure stability during long-term high-load operation. The CAN bus transceiver controller is connected to the CAN bus and 5V power input interface terminals, and the CAN bus and 5V power output interface terminals are connected to the CAN bus and 5V power input interface terminals. The receiving signal of the CAN bus transceiver controller is connected to the fiber optic receiving drive circuit, and the transmitting signal of the CAN bus transceiver controller is connected to the fiber optic transmitting drive circuit. The fiber optic transmitting drive circuit adopts a design adapted to long-distance fiber optic transmission, enabling the module to work stably over a wider transmission distance.

[0028] It should be noted that the CAN bus transceiver controller is the core component of this module, using the SN65HVD1050 model. It supports high-speed data transmission and long-distance communication. It is responsible for converting the electrical signals of the CAN bus into optical signals suitable for fiber optic transmission, and vice versa. The CAN bus and power input interface terminals are used to connect the CAN bus signals and 5V power supply of external devices, providing necessary power and data input support. Through the CAN bus and power output interface terminals, the module can output the received data and power signals to the next-level module or device, realizing multi-device cascading. The fiber optic receiver driver circuit can convert the optical signals received through the fiber optic cable into electrical signals that the CAN bus can recognize, thereby realizing data input from remote devices. The fiber optic transmitter driver circuit can convert the CAN bus transmit signals into optical signals for fiber optic transmission, ensuring that data can be reliably transmitted to remote devices through the fiber optic cable.

[0029] Please see Figure 1 and Figure 2The easily expandable CAN communication to fiber optic module is side-connected to the main device to form an expanded CAN communication to fiber optic module. This module is connected to other devices via optical cables. This scheme allows for convenient expansion. If further expansion is needed, simply side-connect the easily expandable CAN communication to fiber optic module to the previous CAN communication to fiber optic module and connect it to other devices via optical cables. This can be repeated to expand to N modules connected to N corresponding devices. Therefore, the main device can obtain data information from N devices, and other devices can also obtain information from the main device. The side-connection method of this module greatly simplifies the expansion operation, eliminating the need for complex cable wiring and cumbersome configuration. The device can be expanded at any time according to actual needs, adapting to the communication network requirements of various sizes.

[0030] Please see Figure 1 and Figure 2 The main device has CAN bus transceiver functionality, and the extended CAN communication to fiber optic module has fiber optic transceiver drive circuitry, giving the entire system advantages in anti-interference capability, long-distance communication, and data transmission efficiency. The CAN bus transceiver controller has a built-in PCB circuit board for integrating content and is installed in a specific housing. All circuit components of the module are integrated on a single PCB circuit board, packaged and installed in a specific housing, resulting in a compact appearance and easy installation. At the same time, the module has high reliability, reducing failure rate and maintenance costs. The fiber optic interface of the main device uses LC or SC type fiber optic connectors, which can be adapted to common industrial standard fiber optic interfaces, facilitating compatible connection with existing equipment.

[0031] It should be noted that this module employs a low-power circuit design, enabling efficient use of the 5V power supply while ensuring data transmission and stable device operation.

[0032] It should be noted that, Figure 3 In the diagram, U1 is the fiber optic transmitter, denoted as 3-U1; U2 is the NOT gate, denoted as 3-U2; U3 is the fiber optic receiver, denoted as 3-U3; and U4 is the CAN bus transceiver controller, denoted as 3-U4. It has two external terminals, denoted as 3-J1 (male) for connection to the main device and 3-J2 (female) for connection to other extended CAN communication to fiber optic modules.

[0033] Figure 4 U1 and U2 are circuit drivers, denoted as 4-U1 and 4-U2 respectively. U3 is a CAN bus transceiver controller, denoted as 4-U3. It has one external terminal, denoted as 4-J1 (female connector), which plugs into the extended CAN communication to fiber optic module. Figure 4The main device control chip operates on a 3.3V power supply, while the CAN transceiver controller operates on a 5V power supply. Therefore, matching drivers 4-U1 and 4-U2 are used. The main device's CAN communication uses a matching resistor R2 with a resistance of 120 ohms. The main device leads the 5V power supply and CAN bus signal to terminal 4-J1. The 5V power supply provides operating power for the extended CAN communication to fiber optic module, and the CAN bus signal is used for communication with the extended module.

[0034] Figure 5 In this diagram, U1 is the fiber optic transmitter, denoted as 5-U1; U2 is the NOT gate, denoted as 5-U2; and U3 is the fiber optic receiver, denoted as 5-U3.

[0035] The CAN communication to fiber optic module can be extended to connect with other devices via optical cables.

[0036] In this embodiment, an easily expandable CAN communication to fiber optic module, through a CAN bus transceiver controller, CAN bus and 5V power input interface terminals, CAN bus and 5V power output interface terminals, fiber optic receiving drive circuit and fiber optic transmitting drive circuit, can achieve fiber optic transmission. Compared with the traditional twisted-pair transmission method, fiber optic transmission has a longer transmission distance and can effectively solve the problems of electromagnetic interference, ground loop interference and lightning damage that are easily caused by twisted-pair connections. It is also easy to expand, and can be easily implemented by plugging and unplugging the CAN communication to fiber optic module according to the number of devices, making it more practical.

[0037] The working principle of the above embodiment is as follows: the CAN bus transceiver controller converts the CAN signal into an optical signal and sends it to the remote device through optical fiber. The receiving end converts the optical signal back into a CAN bus signal. This can effectively improve the anti-interference capability of data transmission and enable communication over longer distances. The design of this module takes scalability into special consideration. Through inter-module plug-in connection and optical fiber connection, communication expansion between multiple devices can be easily realized. Each expansion module can interact with the master device and other devices, making it convenient to realize large-scale CAN network expansion.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CAN communication to fiber optic module that is easy to expand, comprising a CAN bus transceiver controller, a CAN bus and 5V power input interface terminal, a CAN bus and 5V power output interface terminal, a fiber optic receiving drive circuit and a fiber optic transmitting drive circuit, characterized in that: The CAN bus transceiver controller is connected to the CAN bus and 5V power input interface terminals respectively. The CAN bus and 5V power output interface terminals are connected to the CAN bus and 5V power input interface terminals respectively. The receiving signal of the CAN bus transceiver controller is connected to the optical fiber receiving drive circuit. The transmitting signal of the CAN bus transceiver controller is connected to the optical fiber transmitting drive circuit.

2. The easily expandable CAN communication to fiber optic module according to claim 1, characterized in that: The easily expandable CAN communication to fiber optic module is plugged into the side of the main device to form an expanded CAN communication to fiber optic module, which is connected to other devices via optical cables.

3. The easily expandable CAN communication to fiber optic module according to claim 1, characterized in that: The CAN bus transceiver controller is model SN65HVD1050.

4. The easily expandable CAN communication to fiber optic module according to claim 2, characterized in that: The main device has CAN bus transceiver function, and the extended CAN communication to fiber optic module has fiber optic transceiver drive circuit.

5. A CAN communication to fiber optic module that is easy to expand according to claim 1, characterized in that: The PCB circuit board built into the CAN bus transceiver controller is used to integrate the content and is installed in a specific housing.

6. A CAN communication to fiber optic module that is easy to expand according to claim 2, characterized in that: The fiber optic interface of the main device uses LC or SC type fiber optic connectors.

7. A CAN communication to fiber optic module that is easy to expand according to claim 2, characterized in that: The optical fiber transmission drive circuit is designed to adapt to long-distance optical fiber transmission.

Images