Optical switching module and control system

Abstract

The utility model discloses an optical switching module and a control system. The optical switching module comprises a first optical switching unit and a plurality of second optical switching units. The first optical switching unit and each second optical switching unit respectively comprise at least one group of photoelectric converters, and the photoelectric converters are used for realizing bidirectional conversion between electric signals and optical signals, monitoring the electric signals and generating state signals for representing whether the electric signals are interfered or not; the first optical switching unit further comprises a power supply unit, and the power supply unit is electrically connected with the photoelectric converters and provides first power supply voltage for all the photoelectric converters. The control system comprises a controller, a driver and an optical switching module connected between the controller and the driver. According to the utility model, the complexity of a communication system between the controller and the driver can be reduced, and the optical switching module only performs photoelectric signal conversion and monitors whether an input electric signal is interfered or not, and does not need to communicate with a CPU (Central Processing Unit).

Description

Technical Field

[0001] This utility model belongs to the field of industrial control and automation technology, specifically relating to an optical adapter module and control system. Background Technology

[0002] In industrial control systems, communication between the controller and the drive typically relies on electrical signal transmission. However, this traditional method is susceptible to electromagnetic interference (EMI), especially in complex electromagnetic environments or over long distances, leading to unstable data transmission. Existing technologies usually introduce multiple relay modules between the controller and the drive, with one designated as the master relay and the rest as slave relays. Connected via RS485 communication, the slave relays receive and forward the target signals sent by the controller to the drive, while the master relay periodically polls each slave relay to check for signals received at preset times and adjusts accordingly to ensure accurate transmission of the target control signals to the drive.

[0003] The shortcomings of existing technologies include: despite the addition of repeater modules, communication still relies on RS485 electrical signals, making it susceptible to electromagnetic interference (EMI). Especially in complex electromagnetic environments, even with repeater modules, signal transmission can still be interfered with, affecting communication stability and reliability. Furthermore, the need for signal comparison and control increases system complexity and overall maintenance costs. When transmission lines malfunction or require different lengths, cables must be remade, resulting in poor scalability and flexibility, hindering rapid system adjustments and upgrades. Additionally, the relatively low data transmission rate makes it difficult to meet the demands of high-speed, high-precision applications, limiting system response speed and real-time performance.

[0004] Therefore, in order to address the aforementioned technical problems, it is necessary to provide an optical adapter module and a control system. Utility Model Content

[0005] The purpose of this invention is to provide an optical converter module and control system, which can reduce the complexity of the communication system between the controller and the driver. The optical converter module only performs photoelectric signal conversion and monitors whether the input electrical signal is interfered with, without needing to communicate with the CPU.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] An optical transceiver module, the optical transceiver module comprising a first optical transceiver unit and a plurality of second optical transceiver units;

[0008] The first optical switching unit and each of the second optical switching units each include at least one set of photoelectric converters. The photoelectric converters are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with.

[0009] The first optical transceiver unit further includes a power supply unit, which is electrically connected to the photoelectric converter and provides a first power supply voltage to all photoelectric converters.

[0010] In one or more embodiments of the present invention, the photoelectric converter includes a first signal conversion unit, a second signal conversion unit, a photoelectric conversion unit, and an interference detection unit; the electrical signal includes a first differential signal and a second differential signal; and the optical signal includes a first optical signal and a second optical signal.

[0011] The first signal conversion unit is used to convert the first differential signal into a first single-ended signal, and to convert the second single-ended signal into a second differential signal;

[0012] The second signal conversion unit is connected to the first signal conversion unit and is used to convert the first single-ended signal into a first low-voltage differential signal and to convert the second low-voltage differential signal into the second single-ended signal.

[0013] The photoelectric conversion unit is connected to the second signal conversion unit and is used to convert the first low-voltage differential signal into a first optical signal for output, and to receive the second optical signal and convert the second optical signal into a second low-voltage differential signal.

[0014] The interference detection unit is connected to the first signal conversion unit and is used to perform signal processing based on at least two first single-ended signals and generate the status signal.

[0015] In one or more embodiments of this utility model, the power supply unit includes a control unit, a fault reporting unit, a first opto-isolation unit, and a second opto-isolation unit;

[0016] The control unit is connected to the first signal conversion unit, which is used to convert the external differential control signal into a single-ended control signal. The control unit controls the first power supply voltage to be powered on or off based on the single-ended control signal. The first opto-isolation unit is connected between the first signal conversion unit and the control unit to achieve electrical isolation.

[0017] The fault reporting unit is connected to the first signal conversion unit. The fault reporting unit is used to generate a fault reporting single-ended signal based on the working state of the power supply unit. The first signal conversion unit is used to convert the fault reporting single-ended signal into a fault reporting differential signal and transmit it to the outside. The second opto-isolation unit is connected between the first signal conversion unit and the fault reporting unit to achieve electrical isolation.

[0018] In one or more embodiments of this utility model, the first opto-isolation unit includes a first optocoupler, a first transistor, a first matching resistor, and a second matching resistor. The first input terminal of the first optocoupler is connected to a second power supply voltage, the second input terminal is directly or indirectly connected to the first signal conversion unit, the first output terminal is connected to ground potential, the second output terminal is connected to the first end of the first matching resistor, the second end of the first matching resistor is connected to the first end of the second matching resistor and the base of the first transistor, the second end of the second matching resistor is connected to the emitter of the first transistor and the operating voltage, and the collector of the first transistor is connected to the control unit; and / or,

[0019] The second opto-isolation unit includes a second optocoupler. The first input terminal of the second optocoupler is directly or indirectly connected to the fault reporting unit, the second input terminal is connected to ground potential, the first output terminal is connected to ground potential, the second output terminal is directly or indirectly connected to the second power supply voltage, and the second output terminal of the second optocoupler is connected to the first signal conversion unit.

[0020] In one or more embodiments of this utility model, the first signal conversion unit includes a differential-to-single-ended signal chip and a single-ended-to-differential signal chip. The input terminal of the differential-to-single-ended signal chip receives a first differential signal, and its output terminal is connected to the second signal conversion unit. It is used to convert the first differential signal into a first single-ended signal and to convert an external differential control signal into a single-ended control signal. The input terminal of the single-ended-to-differential signal chip is connected to the second signal conversion unit and receives a second single-ended signal. It is used to convert the second single-ended signal into a second differential signal and output the second differential signal through its own output terminal. It is also used to convert a fault error single-ended signal into a fault error differential signal and transmit it to the outside; and / or,

[0021] The second signal conversion unit includes a low-voltage differential to single-ended signal chip and a single-ended to low-voltage differential signal chip. The input terminal of the low-voltage differential to single-ended signal chip receives a first low-voltage differential signal, and the output terminal is connected to the first signal conversion unit to convert the first low-voltage differential signal into a second single-ended signal. The input terminal of the single-ended to low-voltage differential signal chip is connected to the first signal conversion unit and receives the first single-ended signal, and the output terminal is connected to the photoelectric conversion unit to convert the first single-ended signal into a second low-voltage differential signal.

[0022] In one or more embodiments of this utility model, the photoelectric conversion unit includes a transmitter peripheral circuit, a receiver peripheral circuit, and a communication status monitoring unit;

[0023] The transmitter peripheral circuit includes a first capacitor, a second capacitor, a first resistor, and a first diode assembly. The first terminal of the first capacitor and the first terminal of the second capacitor are used to receive the first low-voltage differential signal. The second terminal of the first capacitor is connected to the first terminal of the first resistor and the first terminal of the first diode assembly. The second terminal of the second capacitor is connected to the second terminal of the first resistor and the second terminal of the first diode assembly. The third terminal of the first diode assembly is connected to ground voltage.

[0024] The receiver peripheral circuit includes a third capacitor, a fourth capacitor, a second resistor, and a second diode assembly. The first terminals of the third capacitor and the fourth capacitor are used to generate the second low-voltage differential signal. The second terminal of the third capacitor is connected to the first terminal of the second resistor and the first terminal of the second diode assembly. The second terminal of the fourth capacitor is connected to the second terminal of the second resistor and the second terminal of the second diode assembly. The third terminal of the second diode assembly is connected to ground voltage.

[0025] The communication status monitoring unit includes a first diode, a third resistor, a fourth resistor, and a third transistor. The first end of the third resistor is directly or indirectly connected to the receiver, the second end is connected to the base of the third transistor, the collector of the third transistor is connected to ground potential, the emitter is connected to the cathode of the first diode, the anode of the first diode is connected to the first end of the fourth resistor, and the second end of the fourth resistor is connected to the first power supply voltage.

[0026] In one or more embodiments of the present invention, the interference detection unit includes a first NOT gate, a second NOT gate, a first AND gate, a second AND gate, and an OR gate;

[0027] The input terminal of the first NOT gate receives a first single-ended signal, the input terminal of the second NOT gate receives an adjacent first single-ended signal, the output terminal of the first NOT gate is connected to the first input terminal of the first AND gate, the second input terminal of the first AND gate receives an adjacent first single-ended signal, and its output terminal is connected to the first input terminal of the OR gate, the first input terminal of the second AND gate is connected to the output terminal of the second NOT gate, the second input terminal of the second AND gate receives the first single-ended signal, and its output terminal is connected to the second input terminal of the OR gate, and the output terminal of the OR gate generates a status signal.

[0028] In one or more embodiments of this utility model, the interference detection unit further includes a timer and a second diode. The input pin of the timer is connected to the output terminal of the OR gate and receives the status signal. The cathode of the second diode is connected to the output pin of the timer, and the anode is connected to the first power supply voltage.

[0029] The technical solution provided by another specific embodiment of this utility model is as follows:

[0030] A control system includes: a controller, a driver, and an optical transceiver module as described in any embodiment;

[0031] The optical transceiver module includes a first optical transceiver unit and a plurality of second optical transceiver units. The first optical transceiver unit and each of the second optical transceiver units each include at least one set of photoelectric converters. The photoelectric converters are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with. The first optical transceiver unit includes a power supply unit, which is electrically connected to the photoelectric converters and provides a first power supply voltage to all photoelectric converters.

[0032] The controller is electrically connected to the photoelectric converter and is used to generate and receive electrical signals.

[0033] The driver is connected to the photoelectric converter via an optical fiber.

[0034] In one or more embodiments of the present invention, the optical transceiver module includes a first optical transceiver unit and two second optical transceiver units, wherein the first optical transceiver unit and each of the second optical transceiver units respectively include two sets of photoelectric converters; and / or, the number of drivers is less than or equal to the number of photoelectric converters.

[0035] Compared with the prior art, the optical transceiver module and control system of this utility model improves the anti-interference capability of the signal by converting electrical signals into optical signals for communication. The first optical transceiver unit provides a first power supply voltage to multiple second optical transceiver units. When any second optical transceiver unit malfunctions, only the faulty second optical transceiver unit needs to be replaced, without replacing the entire optical transceiver module, which improves the maintainability and flexibility of the system. Moreover, the optical transceiver module only needs to perform photoelectric signal conversion and does not need to interact with the CPU, which reduces the maintenance complexity.

[0036] The optical adapter module adopts a modular design, which can be seamlessly connected with existing control systems and easily connect multiple devices to adapt to different application scenarios, reducing integration complexity and improving compatibility.

[0037] The interference detection unit enables the detection of electrical signal interference, allowing for rapid location of faulty parts when problems occur.

[0038] The optical converter module converts electrical signals into optical signals for communication, improving the anti-interference capability of the signal between the controller and the driver. The optical converter module and the driver are connected by optical fiber, which can be cut to the required length on site, facilitating installation and subsequent maintenance. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a structural block diagram of an optical transceiver module according to the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of the first optical transceiver unit in Embodiment 1 of this utility model;

[0042] Figure 3a This is a circuit diagram of the first opto-isolation unit in Embodiment 1 of this utility model;

[0043] Figure 3b This is a circuit diagram of the second opto-isolation unit in Embodiment 1 of this utility model;

[0044] Figure 4 This is a schematic diagram of the optical port circuit of the photoelectric conversion unit in Embodiment 1 of this utility model;

[0045] Figure 5This is a circuit diagram of the interference detection unit in Embodiment 1 of this utility model;

[0046] Figure 6 This is a system block diagram of the control system in Embodiment 1 of this utility model. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0048] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0049] The terms "coupled," "connected," or "linked" in this specification include both direct and indirect connections. An indirect connection is a connection made through an intermediate medium, such as a connection made through an electrically conductive medium, which may have parasitic inductance or capacitance. Indirect connections may also include connections made through other active or passive devices to achieve the same or similar functional purpose, such as connections through switches, follower circuits, or other circuits or components. Furthermore, in this invention, terms such as "first" and "second" are primarily used to distinguish one technical feature from another, and do not necessarily require or imply any actual relationship, quantity, or order between these technical features.

[0050] In the detailed description of this specification, reference is made to the accompanying drawings, which form a part thereof, wherein like reference numerals always denote like parts, and wherein exemplary embodiments are shown by way of example that may be implemented. It should be understood that other embodiments may be utilized, and structural or logical changes may be made, without departing from the scope of this application. Therefore, the following detailed description should not be considered limiting.

[0051] The various operations in the specification may be described sequentially as multiple discrete actions or operations in a manner most conducive to understanding the claimed subject matter. However, the order of description should not be construed as implying that these operations must be sequentially related. Specifically, these operations may not be performed in the order presented. The described operations may be performed in a different order than in the described embodiments. Various additional operations may be performed in additional embodiments and / or the described operations may be omitted.

[0052] Various components and devices may be referred to or shown in the singular (e.g., “MOS transistor”, “transistor”, “switch”, etc.) in this document, but only for the convenience of discussion, and any element referred to in the singular may include multiple such elements as taught herein.

[0053] The description uses the phrases "in this embodiment," "in other embodiments," or "in some embodiments," each of which may refer to one or more of the same or different embodiments. Furthermore, the terms "comprising," "including," "having," etc., used in relation to embodiments of this application are synonymous.

[0054] like Figure 1 As shown, this utility model discloses an optical transceiver module, including a first optical transceiver unit 10 and a plurality of second optical transceiver units 20. The first optical transceiver unit 10 and each second optical transceiver unit 20 respectively include at least one set of photoelectric converters 30. The photoelectric converters 30 are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with. The first optical transceiver unit 10 includes a power supply unit 11, which is electrically connected to the photoelectric converters 30 and provides a first power supply voltage G5V to all photoelectric converters 30.

[0055] Furthermore, this utility model also discloses a control system, which includes a controller, a driver, and an optical converter module. The controller is electrically connected to the photoelectric converter in the optical converter module and is used to generate and receive electrical signals. The driver is connected to the photoelectric converter via an optical fiber.

[0056] The present invention will be further described below with reference to specific embodiments.

[0057] Example 1:

[0058] Combination Figure 1 and Figure 2 As shown, this embodiment discloses an optical transceiver module, which includes a first optical transceiver unit 10 and a plurality of second optical transceiver units 20. The first optical transceiver unit 10 and each of the second optical transceiver units 20 respectively include at least one set of photoelectric converters 30. The photoelectric converters 30 are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with. The first optical transceiver unit 10 includes a power supply unit 11, which is electrically connected to the photoelectric converters 30 and provides a first power supply voltage G5V to all photoelectric converters 30.

[0059] This embodiment uses the first optical transceiver unit 10 as an example. It can be understood that the first optical transceiver unit 10, except for the power supply unit 11, has a similar structure to the second optical transceiver unit 20. This embodiment includes one set of first optical transceiver units 10 and two sets of second optical transceiver units 20. The first optical transceiver unit 10 and the second optical transceiver unit 20 each include two sets of photoelectric converters 30.

[0060] like Figure 2 As shown, the photoelectric converter 30 in this embodiment includes a first signal conversion unit 31, a second signal conversion unit 32, a photoelectric conversion unit 33, and an interference detection unit 34. The electrical signals include a first differential signal TX± and a second differential signal RX±, and the optical signals include a first optical signal and a second optical signal. It should be noted that in this embodiment, the first differential signal TX± and the second differential signal RX± are used to distinguish between the signals generated and received by the first signal conversion unit 31. The first differential signal TX± is an external electrical signal received by the first signal conversion unit 31 (e.g., a control signal from an external controller), and the second differential signal RX± is an electrical signal obtained by multiple conversions of the optical signal.

[0061] The first signal conversion unit 31 is used to realize bidirectional conversion between differential signals and single-ended signals, specifically including converting the external first differential signal TX± into a first single-ended signal TX1, and converting the second single-ended signal RX1 into a second differential signal RX±.

[0062] The second signal conversion unit 32 is connected to the first signal conversion unit 31 and is used to realize bidirectional conversion between low-voltage differential signals and single-ended signals. Specifically, it is used to convert the first single-ended signal TX1 into the first low-voltage differential signal O_TX1± and to convert the second low-voltage differential signal O_RX1± into the second single-ended signal RX1.

[0063] The photoelectric conversion unit 33 is connected to the second signal conversion unit 32 and is used to realize bidirectional conversion between low-voltage differential signal and optical signal. Specifically, the photoelectric conversion unit 33 is used to convert the first low-voltage differential signal O_TX1± into a first optical signal for output, and to receive the second optical signal and convert the second optical signal into a second low-voltage differential signal O_RX1±.

[0064] Interference detection unit 34 is connected to first signal conversion unit 31 and is used to perform signal processing based on at least two adjacent first single-ended signals TX1 (e.g., first single-ended signal TX1 and first single-ended signal nTX1) and generate status signal XOR_TX1.

[0065] like Figure 2As shown, the power supply unit 11 includes a control unit 111, a fault reporting unit 113, a first opto-isolation unit 112, and a second opto-isolation unit 114. The power supply unit 11 is used to generate a first power supply voltage G5V of approximately 5V based on a 24V operating voltage.

[0066] Furthermore, the control unit 111 is connected to the first signal conversion unit 31, which converts the external differential control signal PON± into a single-ended control signal PON. The control unit 111 controls the first power supply voltage G5V to be powered on or off based on the single-ended control signal PON. The first opto-isolation unit 112 is connected between the first signal conversion unit 31 and the control unit 111 to achieve electrical isolation.

[0067] The fault reporting unit 113 is connected to the first signal conversion unit 31. The fault reporting unit 113 is used to generate a fault reporting single-ended signal O_FLT based on the working state of the power supply unit 11. The first signal conversion unit 31 is used to convert the fault reporting single-ended signal O_FLT into a fault reporting differential signal FLT± and transmit it to the outside. The second opto-isolation unit 114 is connected between the first signal conversion unit 31 and the fault reporting unit 113 to achieve electrical isolation.

[0068] like Figure 3a As shown, the first opto-isolation unit 112 includes a first optocoupler U1, a first transistor Q1, a first matching resistor r1, a second matching resistor r2, a third matching resistor r3, a fourth matching resistor r4, and a first matching capacitor c1.

[0069] Specifically, the first end of the third matching resistor r3 is connected to the first signal conversion unit 31 and receives the single-ended control signal PON. The second end of the third matching resistor r3 is connected to the first end of the fourth matching resistor r4 and the second input terminal 2 of the first optocoupler U1. The second end of the fourth matching resistor r4 and the first input terminal 1 of the first optocoupler U1 are connected to the second power supply voltage G3V3. The first output terminal 3 of the first optocoupler U1 is connected to ground potential. The second output terminal 4 of the first optocoupler U1 is connected to the first end of the first matching resistor r1. The second end of the first matching resistor r1 is connected to the first end of the second matching resistor r2 and the base of the first transistor Q1. The second end of the second matching resistor r2 is connected to the emitter of the first transistor Q1 and the operating voltage E24V. The collector of the first transistor Q1 is connected to the control unit 111. The first end of the first matching capacitor c1 is connected to the operating voltage E24V, and the second end is connected to ground potential. In this embodiment, the second power supply voltage is 3.3V, and the operating voltage E24V is 24V. Furthermore, the control unit 111 controls the first power supply voltage G5V to be powered on or off based on the isolated single-ended control signal PON_OUT.

[0070] like Figure 3b As shown, the second opto-isolation unit 114 includes a second optocoupler U2, a fifth matching resistor r5, a sixth matching resistor r6, a seventh matching resistor r7, a second matching capacitor c2, and a third matching capacitor c3.

[0071] Specifically, the first end of the fifth matching resistor r5 is connected to the fault reporting unit 113 and receives the unisolated single-ended signal FLT generated by the fault reporting unit 113. Its second end is connected to the first end of the sixth matching resistor r6, the first end of the second matching capacitor c2, and the first input terminal 1 of the second optocoupler U2. The second ends of the sixth matching resistor r6, the second matching capacitor c2, and the second input terminal 2 of the second optocoupler U2 are connected to ground potential. The first output terminal 3 of the second optocoupler U2 is connected to ground potential, and the second output terminal 4 of the second optocoupler U2 is connected to the first signal conversion unit 31 and generates the isolated fault reporting single-ended signal O_FLT. The first end of the seventh matching resistor r7 is connected to the second output terminal 4 of the second optocoupler U2, and its second end is connected to the second power supply voltage G3V3. The first end of the third matching capacitor c3 is connected to the second power supply voltage G3V3, and its second end is connected to ground potential.

[0072] In this embodiment, the first opto-isolation unit 112 and the second opto-isolation unit 114 have simple circuit structures, low cost, and can meet the requirements for isolated transmission. The data transmission rate of the first opto-isolation unit 112 is improved by compensating the amplitude of the output signal (i.e., PON_OUT) using the first transistor Q1.

[0073] like Figure 2 As shown, the first signal conversion unit 31 in this embodiment includes a differential-to-single-ended signal chip and a single-ended-to-differential signal chip.

[0074] The differential-to-single-ended signal chip receives a first differential signal TX± and a differential control signal PON± from outside the optical transceiver module at its input terminal. Its output terminal is connected to the second signal conversion unit 32, used to convert the first differential signal TX± into a first single-ended signal TX1, and to convert the differential control signal PON± from outside the optical transceiver module into a single-ended control signal PON. The single-ended-to-differential signal chip receives a second single-ended signal RX1 at its input terminal, converts the second single-ended signal RX1 into a second differential signal RX±, outputs the second differential signal RX± through its own output terminal, and converts a fault error single-ended signal into a fault error differential signal FLT± and transmits it externally.

[0075] The second signal conversion unit 32 includes a low-voltage differential to single-ended signal chip and a single-ended to low-voltage differential signal chip. The input of the low-voltage differential to single-ended signal chip receives a first low-voltage differential signal O_TX1±, and its output is connected to the first signal conversion unit 31, used to convert the first low-voltage differential signal O_TX1± into a second single-ended signal RX1. The input of the single-ended to low-voltage differential signal chip is connected to the first signal conversion unit 31 and receives the first single-ended signal TX1, and its output is connected to the photoelectric conversion unit 33, used to convert the first single-ended signal TX1 into the second low-voltage differential signal O_RX1±. In this embodiment, the differential to single-ended signal chip uses a DS34C86 chip with different enable configurations to achieve its corresponding functions. The single-ended to differential signal chip can use a DS34C87 chip with enable configurations to achieve its corresponding functions. The low-voltage differential to single-ended signal chip and the single-ended to low-voltage differential signal chip can use an MS2111 chip with enable configurations to achieve their corresponding functions.

[0076] Combination Figure 1 and Figure 2 As shown, the optical transceiver module in this embodiment also includes multiple input / output interfaces 35, transmit / receive optical ports 36, a first power interface 37, and a second power interface 38.

[0077] Specifically, each group of photoelectric converters 30 in this embodiment includes a corresponding input / output interface 35 (for distinction) Figure 1 The input and output interfaces of each photoelectric converter in the optical transceiver module shown are distinguished here by CN1, CN2, CN3 and CN4. CN1 and CN2 correspond to the input and output interfaces of the two photoelectric converters 30 in the first optical transceiver unit 10, respectively, and CN3 and CN4 correspond to the input and output interfaces of the two photoelectric converters 30 in the second optical transceiver unit 20, respectively.

[0078] Each group of photoelectric converters 30 in this embodiment includes a corresponding transmitting and receiving optical port 36 (for distinction) Figure 1 The transmit and receive optical ports 36 of each photoelectric converter in the optical transceiver module shown are distinguished here by CN9, CN10, CN5 and CN6. CN9 and CN10 correspond to the transmit and receive optical ports of the two photoelectric converters 30 in the first optical transceiver unit 10, respectively, and CN5 and CN6 correspond to the transmit and receive optical ports of the two photoelectric converters 30 in the second optical transceiver unit 20, respectively.

[0079] Furthermore, in this embodiment, each second optical transceiver unit 20 is provided with a first power interface 37, and each first optical transceiver unit 10 is provided with a second power interface 38. The number of second power interfaces 38 is equal to the number of second optical transceiver units 20. Each first power interface 37 is internally electrically connected to one of the second power interfaces 38. For ease of distinction, Figure 1CN13 shown is the first power interface 37 of the second optical transceiver unit 20, and CN7 and CN8 are the second power interfaces 38.

[0080] like Figure 2 As shown, taking a photoelectric converter 30 of the first optical transceiver unit 10 as an example, the input / output interface CN1 includes an input interface IN CN1 and an output interface OUT CN1. One end of the input interface IN CN1 is connected to the input terminal of the differential-to-single-ended signal chip, and one end of the output interface OUT CN1 is connected to the output terminal of the single-ended-to-differential signal chip. It can be understood that the other end of the input / output interface CN1 (including the input interface IN CN1 and the output interface OUT CN1) is connected to an external controller 40. Correspondingly, the transmit / receive optical port CN10 includes a receive optical port RX and a transmit optical port TX.

[0081] The power supply unit 11 is electrically connected to the photoelectric converter 30 and the second power interface 38 in the first optical transceiver unit 10. The power supply unit 11 directly provides the first power supply voltage G5V to the photoelectric converter 30 in the first optical transceiver unit 10, and transmits the first power supply voltage G5V to the first power interface 37 through the second power interface 38. The first power interface 37 is electrically connected to the photoelectric converter 30 in the second optical transceiver unit 20 and provides the first power supply voltage G5V.

[0082] like Figure 4 As shown, the photoelectric conversion unit 33 includes a transmit / receive optical port 36, a transmitter peripheral circuit, a receiver peripheral circuit, and a communication status monitoring unit. The transmit / receive optical port 36 is connected to an optical fiber, and the transmitter peripheral circuit, the receiver peripheral circuit, and the communication status monitoring unit are all connected to the transmit / receive optical port 36.

[0083] The transmitter's peripheral circuitry includes a first capacitor C1, a second capacitor C2, a first resistor R1, and a first diode assembly 61. The first terminal of the first capacitor C1 and the first terminal of the second capacitor C2 are used to receive a first low-voltage differential signal O_TX1±. The second terminal of the first capacitor C1 is connected to the first terminal of the first resistor R1 and the first terminal of the first diode assembly 61. The second terminal of the second capacitor C2 is connected to the second terminal of the first resistor R1 and the second terminal of the first diode assembly 61. The third terminal of the first diode assembly 61 is connected to ground. The first capacitor C1 and the second capacitor C2 are used to achieve AC coupling, and the first resistor R1 is used to achieve impedance matching.

[0084] The receiver's peripheral circuitry includes a third capacitor C3, a fourth capacitor C4, a second resistor R2, and a second diode assembly 62. The first terminals of the third capacitor C3 and the fourth capacitor C4 are used to generate a second low-voltage differential signal O_RX1±. The second terminal of the third capacitor C3 is connected to the first terminal of the second resistor R2 and the first terminal of the second diode assembly 62. The second terminal of the fourth capacitor C4 is connected to the second terminal of the second resistor R2 and the second terminal of the second diode assembly 62. The third terminal of the second diode assembly 62 is connected to ground. The third capacitor C3 and the fourth capacitor C4 are used for AC coupling, and the second resistor R2 is used for impedance matching.

[0085] The communication status monitoring unit includes a first diode D1, a third resistor R3, a fourth resistor R4, and a third transistor Q3. The first end of the third resistor R3 is directly or indirectly connected to the receiver, the second end is connected to the base of the third transistor Q3, the collector of the third transistor Q3 is connected to ground potential, the emitter is connected to the cathode of the first diode D1, the anode of the first diode D1 is connected to the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is connected to the first power supply voltage G5V.

[0086] In this embodiment, the data transmission frequency is 20MHz. The on / off state of the first diode D1 indicates whether the communication status is normal: when an optical signal is received, the SD1 signal is high, and conversely, when no optical signal is received, the SD1 signal becomes low.

[0087] like Figure 5 As shown, the interference detection unit 34 includes a first NOT gate I1, a second NOT gate I2, a first AND gate A1, a second AND gate A2, an OR gate O1, a timer U3, and a second diode D2.

[0088] The input of the first NOT gate I1 receives the first single-ended signal TX1, and the input of the second NOT gate I2 receives the adjacent first single-ended signal TX1. The output of the first NOT gate I1 is connected to the first input of the first AND gate A1. The second input of the first AND gate A1 receives the adjacent first single-ended signal nTX1, and its output is connected to the first input of the OR gate O1. The first input of the second AND gate A2 is connected to the output of the second NOT gate I2. The second input of the second AND gate A2 receives the first single-ended signal TX1, and its output is connected to the second input of the OR gate O1. The output of the OR gate O1 generates the status signal XOR_TX1. The input pin of the timer U3 is connected to the output of the OR gate O1 and receives the status signal XOR_TX1. The cathode of the second diode D2 is connected to the output pin of the timer U3, and the anode is connected to the first power supply voltage G5V.

[0089] Furthermore, in this embodiment, the first NOT gate I1 and the second NOT gate I2 are configured using chip SN74HC14, timer U3 is a 555 timer chip LM555CMX, the first AND gate A1 and the second AND gate A2 are configured using AND gate chip SN74HC08, and OR gate O1 is configured using OR gate chip SN74HC32. Under normal operating conditions, the nTX1 and TX1 signals are 0 and 1 respectively (two different values), and the status signal XOR_TX1 is 1. When there is interference, the nTX1 and TX1 signals will be 1 or 0 simultaneously, and the status signal XOR_TX1 will be 0. In this embodiment, the status signal XOR_TX1 is input to the TRIG pin of the 555 timer chip LM555CMX. The 555 timer chip LM555CMX is used to delay the status signal XOR_TX1. The output of the 555 timer controls whether the second diode D2 illuminates, thereby determining whether there is interference through the display status of the second diode D2.

[0090] Furthermore, the peripheral circuit of timer U3 also includes a fifth resistor R5, which is connected between the output pin Output of timer U3 and the second diode.

[0091] Example 2:

[0092] like Figure 6 As shown, this embodiment provides a control system, including: a controller 40, a driver 50, and an optical converter module;

[0093] The optical transceiver module includes a first optical transceiver unit 10 and a plurality of second optical transceiver units 20. The first optical transceiver unit 10 and each of the second optical transceiver units 20 respectively include at least one set of photoelectric converters 30. The photoelectric converters 30 are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with. The first optical transceiver unit 10 includes a power supply unit 11, which is electrically connected to the photoelectric converters 30 and provides a first power supply voltage G5V to all photoelectric converters 30.

[0094] The controller 40 is electrically connected to the photoelectric converter 30 and is used to generate and receive electrical signals.

[0095] The driver 50 is connected to the photoelectric converter 30 via an optical fiber.

[0096] It is understood that the number of drivers 50 is less than or equal to the number of photoelectric converters 30. In this embodiment, the optical transceiver module includes a first optical transceiver unit 10 and two second optical transceiver units 20. Each of the first optical transceiver unit 10 and each second optical transceiver unit 20 includes two sets of photoelectric converters 30. In this embodiment, the optical transceiver module is only responsible for photoelectric signal conversion and does not interact with the CPU, simplifying the system architecture and reducing the complexity of later maintenance.

[0097] The first optical transceiver unit 10 provides a first power supply voltage G5V to multiple second optical transceiver units 20. This design ensures that even if a single second optical transceiver unit 20 fails, the entire optical transceiver module does not need to be replaced; only the faulty second optical transceiver unit 20 needs to be replaced, thus improving the maintainability and flexibility of the system.

[0098] The interface of the controller 40 can be connected to any input / output interface of the optical adapter module. Simply connect the corresponding transmit / receive optical port of that input / output interface to the optical port of the driver 50. In this embodiment, the optical adapter module is equipped with six transmit / receive optical ports, enabling simultaneous connection to six drivers 50 and six controller 40 interfaces. This accommodates the number of feed axes in CNC machine tools requiring high speed and precision.

[0099] In this embodiment, the optical adapter module and the driver 50 are connected by optical fiber. The optical fiber can be cut to the required length on site, which facilitates installation and subsequent maintenance, and further enhances the scalability and adaptability of the system.

[0100] As can be seen from the above technical solutions, this utility model has the following beneficial effects:

[0101] This invention provides a first power supply voltage to multiple second optical transceivers through a first optical transceiver unit, ensuring that even if a single second optical transceiver unit malfunctions, the entire optical transceiver module does not need to be replaced; only the faulty second optical transceiver unit needs to be replaced. This improves the maintainability and flexibility of the system. Furthermore, the optical transceiver module only needs to perform photoelectric signal conversion and does not need to interact with the CPU, thus reducing maintenance complexity.

[0102] The optical adapter module adopts a modular design, which can be seamlessly connected with existing control systems and easily connect multiple devices to adapt to different application scenarios, reducing integration complexity and improving compatibility.

[0103] The interference detection unit enables the detection of electrical signal interference, allowing for rapid location of faulty parts when problems occur.

[0104] The optical converter module converts electrical signals into optical signals for communication, improving the anti-interference capability of the signal between the controller and the driver. The optical converter module and the driver are connected by optical fiber, which can be cut to the required length on site, facilitating installation and subsequent maintenance.

[0105] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0106] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An optical transceiver module, characterized in that, The optical switching module includes a first optical switching unit and multiple second optical switching units; The first optical switching unit and each of the second optical switching units each include at least one set of photoelectric converters. The photoelectric converters are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with. The first optical transceiver unit further includes a power supply unit, which is electrically connected to the photoelectric converter and provides a first power supply voltage to all photoelectric converters.

2. The optical transceiver module according to claim 1, characterized in that, The photoelectric converter includes a first signal conversion unit, a second signal conversion unit, a photoelectric conversion unit, and an interference detection unit. The electrical signal includes a first differential signal and a second differential signal, and the optical signal includes a first optical signal and a second optical signal. The first signal conversion unit is used to convert the first differential signal into a first single-ended signal, and to convert the second single-ended signal into a second differential signal; The second signal conversion unit is connected to the first signal conversion unit and is used to convert the first single-ended signal into a first low-voltage differential signal and to convert the second low-voltage differential signal into the second single-ended signal. The photoelectric conversion unit is connected to the second signal conversion unit and is used to convert the first low-voltage differential signal into a first optical signal for output, and to receive the second optical signal and convert the second optical signal into a second low-voltage differential signal. The interference detection unit is connected to the first signal conversion unit and is used to perform signal processing based on at least two first single-ended signals and generate the status signal.

3. The optical transceiver module according to claim 2, characterized in that, The power supply unit includes a control unit, a fault reporting unit, a first opto-isolation unit, and a second opto-isolation unit. The control unit is connected to the first signal conversion unit, which is used to convert the external differential control signal into a single-ended control signal. The control unit controls the first power supply voltage to be powered on or off based on the single-ended control signal. The first opto-isolation unit is connected between the first signal conversion unit and the control unit to achieve electrical isolation. The fault reporting unit is connected to the first signal conversion unit. The fault reporting unit is used to generate a fault reporting single-ended signal based on the working state of the power supply unit. The first signal conversion unit is used to convert the fault reporting single-ended signal into a fault reporting differential signal and transmit it to the outside. The second opto-isolation unit is connected between the first signal conversion unit and the fault reporting unit to achieve electrical isolation.

4. The optical transceiver module according to claim 3, characterized in that, The first opto-isolation unit includes a first optocoupler, a first transistor, a first matching resistor, and a second matching resistor. The first input terminal of the first optocoupler is connected to a second power supply voltage, and the second input terminal is directly or indirectly connected to the first signal conversion unit. The first output terminal is connected to ground potential, and the second output terminal is connected to the first end of the first matching resistor. The second end of the first matching resistor is connected to the first end of the second matching resistor and the base of the first transistor. The second end of the second matching resistor is connected to the emitter of the first transistor and its operating voltage. The collector of the first transistor is connected to the control unit; and / or, The second opto-isolation unit includes a second optocoupler. The first input terminal of the second optocoupler is directly or indirectly connected to the fault reporting unit, the second input terminal is connected to ground potential, the first output terminal is connected to ground potential, the second output terminal is directly or indirectly connected to the second power supply voltage, and the second output terminal of the second optocoupler is connected to the first signal conversion unit.

5. The optical transceiver module according to claim 3, characterized in that, The first signal conversion unit includes a differential-to-single-ended signal chip and a single-ended-to-differential signal chip. The input terminal of the differential-to-single-ended signal chip receives a first differential signal, and its output terminal is connected to the second signal conversion unit. It is used to convert the first differential signal into a first single-ended signal and to convert external differential control signals into single-ended control signals. The input terminal of the single-ended-to-differential signal chip is connected to the second signal conversion unit and receives a second single-ended signal. It is used to convert the second single-ended signal into a second differential signal and output the second differential signal through its own output terminal. It is also used to convert fault error single-ended signals into fault error differential signals and transmit them externally; and / or, The second signal conversion unit includes a low-voltage differential to single-ended signal chip and a single-ended to low-voltage differential signal chip. The input terminal of the low-voltage differential to single-ended signal chip receives a first low-voltage differential signal, and the output terminal is connected to the first signal conversion unit to convert the first low-voltage differential signal into a second single-ended signal. The input terminal of the single-ended to low-voltage differential signal chip is connected to the first signal conversion unit and receives the first single-ended signal, and the output terminal is connected to the photoelectric conversion unit to convert the first single-ended signal into a second low-voltage differential signal.

6. The optical transceiver module according to claim 2, characterized in that, The photoelectric conversion unit includes transmitter peripheral circuitry, receiver peripheral circuitry, and communication status monitoring unit; The transmitter peripheral circuit includes a first capacitor, a second capacitor, a first resistor, and a first diode assembly. The first terminal of the first capacitor and the first terminal of the second capacitor are used to receive the first low-voltage differential signal. The second terminal of the first capacitor is connected to the first terminal of the first resistor and the first terminal of the first diode assembly. The second terminal of the second capacitor is connected to the second terminal of the first resistor and the second terminal of the first diode assembly. The third terminal of the first diode assembly is connected to ground voltage. The receiver peripheral circuit includes a third capacitor, a fourth capacitor, a second resistor, and a second diode assembly. The first terminals of the third capacitor and the fourth capacitor are used to generate the second low-voltage differential signal. The second terminal of the third capacitor is connected to the first terminal of the second resistor and the first terminal of the second diode assembly. The second terminal of the fourth capacitor is connected to the second terminal of the second resistor and the second terminal of the second diode assembly. The third terminal of the second diode assembly is connected to ground voltage. The communication status monitoring unit includes a first diode, a third resistor, a fourth resistor, and a third transistor. The first end of the third resistor is directly or indirectly connected to the receiver, the second end is connected to the base of the third transistor, the collector of the third transistor is connected to ground potential, the emitter is connected to the cathode of the first diode, the anode of the first diode is connected to the first end of the fourth resistor, and the second end of the fourth resistor is connected to the first power supply voltage.

7. The optical transceiver module according to claim 2, characterized in that, The interference detection unit includes a first NOT gate, a second NOT gate, a first AND gate, a second AND gate, and an OR gate; The input terminal of the first NOT gate receives a first single-ended signal, the input terminal of the second NOT gate receives an adjacent first single-ended signal, the output terminal of the first NOT gate is connected to the first input terminal of the first AND gate, the second input terminal of the first AND gate receives an adjacent first single-ended signal, and its output terminal is connected to the first input terminal of the OR gate, the first input terminal of the second AND gate is connected to the output terminal of the second NOT gate, the second input terminal of the second AND gate receives the first single-ended signal, and its output terminal is connected to the second input terminal of the OR gate, and the output terminal of the OR gate generates a status signal.

8. The optical transceiver module according to claim 7, characterized in that, The interference detection unit further includes a timer and a second diode. The input pin of the timer is connected to the output of the OR gate and receives the status signal. The cathode of the second diode is connected to the output pin of the timer, and the anode is connected to the first power supply voltage.

9. A control system, characterized in that, include: Controller, driver, and optical transceiver module as described in any one of claims 1 to 8; The optical transceiver module includes a first optical transceiver unit and a plurality of second optical transceiver units. The first optical transceiver unit and each of the second optical transceiver units each include at least one set of photoelectric converters. The photoelectric converters are used to realize bidirectional conversion between electrical signals and optical signals, and are used to monitor electrical signals and generate status signals to characterize whether electrical signals are interfered with. The first optical transceiver unit includes a power supply unit, which is electrically connected to the photoelectric converters and provides a first power supply voltage to all photoelectric converters. The controller is electrically connected to the photoelectric converter and is used to generate and receive electrical signals. The driver is connected to the photoelectric converter via an optical fiber.

10. The control system according to claim 9, characterized in that, The optical transceiver module includes a first optical transceiver unit and two second optical transceiver units, and the first optical transceiver unit and each of the second optical transceiver units respectively include two sets of photoelectric converters; And / or, the number of the drivers is less than or equal to the number of the photoelectric converters.

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