Test board for digital optical communication

Abstract

The present invention relates to the technical field of digital optical terminal debugging, and in particular to a test board for digital optical terminal communication, comprising a circuit board, a serial port wiring group, a digital optical terminal connection group and a terminal system connection group; an external host computer is connected to the serial port wiring group through a serial port card; when the communication situation of the digital optical terminal needs to be tested, the digital optical terminal is connected to the digital optical terminal connection group, and an external debugging device monitors the communication situation between the digital optical terminal and the host computer through the circuit board; when the communication situation of the terminal system needs to be tested, the terminal system is connected to the terminal system connection group, and the debugging device monitors the communication situation between the terminal system and the host computer through the circuit board. The present invention can be connected to the digital optical terminal, the terminal system and the host computer, and while realizing interface conversion, it can complete real-time monitoring of communication data between the digital optical terminal and the host computer, and communication data between the terminal system and the host computer, without affecting normal data communication.

Description

Technical Field

[0001] The invention belongs to the technical field of digital optical terminal debugging, and in particular relates to a test board used for digital optical terminal communication. Background Art

[0002] With the development of science and technology, the utilization rate of digital optical terminals is increasing. At present, the commonly used digital optical terminal communication interfaces on the market are all circular self-locking connectors, but the terminal system interfaces are of various types and cannot be directly connected with circular self-locking connectors. Customized connectors or connecting cables are required to complete the connection between the terminal system and the digital optical terminal. On this basis, if there is a problem in the communication process between the terminal system and the digital optical terminal, the tester needs to transfer or adjust the line sequence multiple times during the test, which greatly increases the workload and is time-consuming and labor-intensive. Summary of the invention

[0003] In view of this, the invention aims to provide a test board for digital optical terminal communication. The invention can be connected to the digital optical terminal, the terminal system and the host computer. While realizing interface conversion, it can complete real-time monitoring of the communication data between the digital optical terminal and the host computer, and the communication data between the terminal system and the host computer without affecting normal data communication.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A test board for digital optical terminal communication, comprising a circuit board, a serial port wiring group, a digital optical terminal connection group and a terminal system connection group; wherein the serial port wiring group, the digital optical terminal connection group and the terminal system connection group are connected through the circuit board; an external host computer is connected to the serial port wiring group through a serial port card;

[0006] When the communication status of the digital optical terminal needs to be tested, the digital optical terminal is connected to the digital optical terminal connection group, and the external debugging equipment monitors the communication status between the digital optical terminal and the host computer through the circuit board;

[0007] When the communication status of the terminal system needs to be tested, the terminal system is connected to the terminal system connection group, and the debugging device monitors the communication status between the terminal system and the host computer through the circuit board. Further, the serial port connection group includes a first interface group, a second interface group and a third interface group; wherein the first interface group is connected to a first serial port card with an RS422 interface; the second interface group is connected to a second serial port card with an RS422 interface; and the third interface group is connected to a third serial port card with an RS232 interface.

[0008] Furthermore, the first interface group includes a first serial port direct connection interface and a first serial port cross interface; wherein, the first serial port card is connected to the first serial port direct connection interface to complete the connection between the host computer and the digital optical terminal; the first serial port card is connected to the first serial port cross interface to complete the connection between the host computer and the terminal system.

[0009] Furthermore, the second interface group includes a second serial port direct connection interface and a second serial port cross interface; wherein, the second serial port card is connected to the second serial port direct connection interface to complete the connection between the host computer and the digital optical terminal; the second serial port card is connected to the second serial port cross interface to complete the connection between the host computer and the terminal system.

[0010] Furthermore, the third interface group includes a third serial port direct connection interface and a third serial port cross interface; wherein, the third serial port card is connected to the third serial port direct connection interface to complete the connection between the host computer and the digital optical terminal; the third serial port card is connected to the third serial port cross interface to complete the connection between the host and the terminal system.

[0011] Furthermore, the digital optical terminal connection group includes a first connection end, a second connection end and a third connection end; wherein the first connection end is connected to the RS422 interface of the digital optical terminal, the second connection end is connected to the TTL interface of the digital optical terminal, and the third connection end is connected to the RS232 interface of the digital optical terminal.

[0012] Furthermore, the first connection end, the second connection end and the third connection end are circular self-locking connector plugs.

[0013] Furthermore, the terminal system connection group includes a fourth connection terminal, a fifth connection terminal and a sixth connection terminal; wherein the fourth connection terminal is connected to the RS422 interface of the terminal system, the fifth connection terminal is connected to the TTL interface of the terminal system, and the sixth connection terminal is connected to the RS232 interface of the terminal system.

[0014] Further, the fourth connection end, the fifth connection end and the sixth connection end are circular self-locking connector sockets. Further, at least two test points are provided on the circuit board, and the debugging equipment is connected to the test points to monitor the communication between the digital optical terminal and the host computer, or the communication between the terminal system and the host computer.

[0015] Compared with the prior art, the invention can achieve the following beneficial effects:

[0016] The test board for digital optical terminal communication created by the present invention connects the digital optical terminal, the terminal system and the host computer, and can complete the real-time monitoring of the communication data between the digital optical terminal and the host computer, or the real-time monitoring of the communication data between the terminal system and the host computer while realizing interface conversion, without affecting normal data communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the connection relationship of a test board for digital optical terminal communication according to an embodiment of the present invention;

[0019] Figure 2 The invention provides a wiring diagram of a test board for digital optical terminal communication according to an embodiment of the invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the invention more clear, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the invention and do not constitute a limitation of the invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] like Figure 1 and Figure 2 As shown, the test board for digital optical terminal communication described in the embodiment of the invention includes a circuit board, a serial port wiring group, a digital optical terminal connection group and a terminal system connection group. Among them, the serial port wiring group, the digital optical terminal connection group and the terminal system connection group are connected through the circuit board, and the external host computer is connected to the serial port wiring group through the serial port card. When the communication status of the digital optical terminal needs to be tested, the digital optical terminal is connected to the digital optical terminal connection group, and the external debugging equipment monitors the communication status between the digital optical terminal and the host computer through the circuit board; when the communication status of the terminal system needs to be tested, the terminal system is connected to the terminal system connection group, and the debugging equipment monitors the communication status between the terminal system and the host computer through the circuit board.

[0026] No less than 2 test points are provided on the circuit board for accessing external debugging equipment such as an oscilloscope and a multimeter. When a fault occurs during the communication between the digital optical terminal and the terminal system, the digital optical terminal or the terminal system is connected to the host computer through the test board for digital optical terminal communication provided by the embodiment of the present invention. While ensuring the communication between the digital optical terminal or the terminal system and the host computer, the debugging equipment contacts the test points to read the corresponding parameters during the communication process. In the embodiment of the present invention, preferably 3 groups of test points are set, the first group of test points corresponds to the first connection end, including 3 test points, the second group of test points corresponds to the second connection end, including 4 test points, and the third group of test points corresponds to the third connection end, including 5 test points.

[0027] The serial port connection group includes a first interface group, a second interface group and a third interface group.

[0028] The first interface group is connected to the first serial port card with RS422 interface, and the first interface group includes the first serial port direct connection interface and the first serial port cross interface. The first serial port card is connected to the first serial port direct connection interface to complete the connection between the host computer and the digital optical terminal. The first serial port card is connected to the first serial port cross interface to complete the connection between the host computer and the terminal system.

[0029] The second interface group is connected to the second serial port card with RS422 interface, and the second interface group includes the second serial port direct connection interface and the second serial port cross interface. The second serial port card is connected to the second serial port direct connection interface to complete the connection between the host computer and the digital optical terminal. The second serial port card is connected to the second serial port cross interface to complete the connection between the host computer and the terminal system.

[0030] The third interface group is connected to the third serial port card with RS232 interface, and the third interface group includes the third serial port direct connection interface and the third serial port cross interface. The third serial port card is connected to the third serial port direct connection interface to complete the connection between the host computer and the digital optical terminal. The third serial port card is connected to the third serial port cross interface to complete the connection between the host computer and the terminal system.

[0031] In the embodiment of the present invention, the first serial port card is a MOXA serial port card with an RS422 interface / RS485 interface / RS232 interface, and the first serial port direct connection interface and the first serial port cross interface connected to the first serial port card are 9-pin DB9 socket holes, which are respectively recorded as DB9ZK1 and DB9ZK2. The second serial port card is a UT890 serial port card with an RS422 interface / RS485 interface, and the second serial port direct connection interface and the second serial port cross interface connected to the second serial port card are 9-pin DB9 socket holes, which are respectively recorded as DB9ZK3 and DB9ZK4. The third serial port card is a UT810 serial port card with an RS232 interface, and the third serial port direct connection interface and the third serial port cross interface connected to the third serial port card are 9-pin DB9 socket holes, which are respectively recorded as DB9ZK5 and DB9ZK6.

[0032] Common digital optical terminals include four types of interfaces, namely RS422 interface, RS232 interface, RS485 interface and TTL interface. Among them, the RS422 interface and RS485 interface use the 5-core LEMO circular self-locking connector socket model EGG0B305CYM, the RS232 interface uses the 3-core LEMO circular self-locking connector socket model EGG0B303CYM, and the TTL interface uses the 4-core LEMO circular self-locking connector socket model EGG0B304CYM.

[0033] The digital optical terminal connection group includes a first connection end, a second connection end and a third connection end. The first connection end is connected to the RS422 interface of the digital optical terminal, the second connection end is connected to the TTL interface of the digital optical terminal, and the third connection end is connected to the RS232 interface of the digital optical terminal. Therefore, in the embodiment of the present invention: the first connection end in the digital optical terminal connection group matches the model of the RS422 interface and the RS485 interface of the digital optical terminal, that is, the first connection end adopts a 5-core LEMO circular self-locking connector plug with the model FGG0B305CLA; the second connection end in the digital optical terminal connection group matches the model of the TTL interface of the digital optical terminal, that is, the second connection end adopts a 4-core LEMO circular self-locking connector plug with the model FGG0B304CLA; the third connection end in the digital optical terminal connection group matches the model of the RS232 interface of the digital optical terminal, that is, the third connection end adopts a 3-core LEMO circular self-locking connector plug with the model FGG0B303CLA.

[0034] The terminal system connection group includes a fourth connection terminal, a fifth connection terminal and a sixth connection terminal, wherein the fourth connection terminal is connected to the RS422 interface and the RS485 interface of the terminal system, the fifth connection terminal is connected to the TTL interface of the terminal system, and the sixth connection terminal is connected to the RS232 interface of the terminal system.

[0035] In an embodiment of the present invention, the fourth connection end adopts a 5-core LEMO circular self-locking connector socket of EGG0B305CYM, which is connected to the 5-core LEMO circular self-locking connector plug of FGG0B305CLA at the RS422 interface and RS485 interface of the terminal system; the fifth connection end adopts a 4-core LEMO circular self-locking connector socket of EGG0B304CYM, which is connected to the 4-core LEMO circular self-locking connector plug of FGG0B304CLA at the TTL interface of the terminal system; the sixth connection end adopts a 3-core LEMO circular self-locking connector socket of EGG0B303CYM, which is connected to the 3-core LEMO circular self-locking connector plug of FGG0B303CLA at the RS232 interface of the terminal system.

[0036] Table 1 shows the wiring definition of a test board for digital optical terminal communication provided by an embodiment of the present invention.

[0037] Table 1:

[0038]

[0039] In Table 1, RX represents serial port receiving data, TX represents serial port sending data, TTL represents level signal, and GND represents grounding. Since the RS422 interface receives differential level signals, the signals at the connection end related to the RS422 interface include the positive signal RX+ of serial port receiving data, the negative signal RX- of serial port receiving data, the positive signal TX+ of serial port sending data, and the negative signal TX- of serial port sending data.

[0040] When the digital optical terminal and the terminal system are connected and communicated using the test board for digital optical terminal communication provided by the embodiment of the present invention: the digital optical terminal is connected to the corresponding connection end in the digital optical terminal connection group on the test board according to the requirements of the communication protocol; the terminal system is connected to the corresponding connection end in the terminal system connection group on the test board according to the requirements of the communication protocol; the host computer uses a serial port card adapted to the communication protocol to connect to the corresponding interface group in the serial port wiring group on the test board according to the requirements of the communication protocol, and uses the host computer to monitor the communication between the digital optical terminal and the terminal system.

[0041] When the digital optical terminal needs to be debugged, the test board for digital optical terminal communication provided by the embodiment of the present invention is connected to the digital optical terminal:

[0042] When the digital optical terminal interface is EGG0B305CYM, select the first connection terminal FGG0B305CLA for docking, and select the first serial port direct connection port DB9ZK1 to dock with the MOXA serial port, and then the MOXA serial port is connected to the host computer through the PCIE interface, so that the debugging device can monitor the communication between the digital optical terminal and the host computer through the test points on the circuit board without affecting the normal communication between the digital optical terminal and the host computer, and then obtain the communication status of the digital optical terminal;

[0043] When the digital optical terminal interface is EGG0B305CYM, select the first connection terminal FGG0B305CLA for docking, and select the second serial port direct connection port DB9ZK3 to dock with the UT890 serial port. Then the UT890 serial port is connected to the host computer for monitoring data through the USB interface, and the communication between the digital optical terminal and the host computer is monitored in the host computer.

[0044] When the digital optical terminal interface is EGG0B303CYM, select the third connection terminal FGG0B303CLA for docking, and select the third serial port direct connection port DB9ZK5 to dock with the UT810 serial port, and then connect the UT810 serial port to the host computer through the USB interface, so that the debugging equipment can monitor the communication between the digital optical terminal and the host computer through the test points on the circuit board without affecting the normal communication between the digital optical terminal and the host computer, and then obtain the communication status of the digital optical terminal;

[0045] When the digital optical terminal interface is FGG0B304CLA, the second connection end EGG0B304CYM interface is selected for docking, so that the debugging device can monitor the TTL signal generated by the digital optical terminal through the test point on the circuit board without affecting the normal communication between the digital optical terminal and the host computer.

[0046] When the terminal system needs to be debugged, the test board for digital optical terminal communication provided by the embodiment of the present invention is connected to the terminal system:

[0047] When the terminal system interface is FGG0B305CLA, select the fourth connection terminal EGG0B305CYM for docking, and select the first serial port cross interface DB9ZK2 to dock with MOXA, and then MOXA is connected to the host computer through the PCIE interface, so that the debugging device monitors the communication status of the terminal system and the host computer through the test points on the circuit board without affecting the normal communication between the terminal system and the host computer, and then obtains the communication status of the terminal system;

[0048] When the terminal system interface is FGG0B305CLA, select the fourth connection terminal EGG0B305CYM interface for docking, and select the second serial port cross interface DB9ZK4 to dock with the UT890 serial port. Then the UT890 serial port is connected to the host computer for monitoring data through the USB interface, and the communication between the terminal system and the host computer is monitored in the host computer;

[0049] When the terminal system interface is FGG0B303CLA, select the sixth connection terminal EGG0B303CYM interface for docking, and select the third serial port cross interface DB9ZK6 to dock with the UT810 serial port, and then connect the UT810 serial port to the computer through the USB interface, so that the debugging device can monitor the communication between the terminal system and the host computer through the test points on the circuit board without affecting the normal communication between the terminal system and the host computer, and then obtain the communication status of the terminal system;

[0050] When the terminal system interface is FGG0B304CLA, the fifth connection terminal EGG0B304CYM interface is selected for docking, so that the debugging device monitors the TTL signal generated by the terminal system through the test point on the circuit board without affecting the normal communication between the terminal system and the host computer.

[0051] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test board for digital optical terminal communication, characterized in that: It includes a circuit board, a serial port wiring group, a digital optical terminal connection group and a terminal system connection group; wherein the serial port wiring group, the digital optical terminal connection group and the terminal system connection group are connected through the circuit board; an external host computer is connected to the serial port wiring group through a serial port card; The digital optical terminal is connected to the digital optical terminal connection group, the terminal system is connected to the terminal system connection group, the host computer is connected to the serial port connection group using a serial port card, and the communication between the digital optical terminal and the terminal system is monitored by the host computer; When the communication status of the digital optical terminal needs to be tested, the digital optical terminal is connected to the digital optical terminal connection group, and an external debugging device monitors the communication status between the digital optical terminal and the host computer through the circuit board; When the communication status of the terminal system needs to be tested, the terminal system is connected to the terminal system connection group, and the debugging device monitors the communication status between the terminal system and the host computer through the circuit board; No less than two test points are provided on the circuit board, and the debugging device is connected to the test points. When a fault occurs during the communication between the digital optical terminal and the terminal system, the digital optical terminal or the terminal system is connected to the host computer through the test board. While ensuring that the digital optical terminal or the terminal system communicates with the host computer, the debugging device contacts the test points to read the corresponding parameters during the communication process.

2. The test board for digital optical terminal communication according to claim 1, characterized in that: The serial port wiring group includes a first interface group, a second interface group and a third interface group; wherein the first interface group is connected to a first serial port card with an RS422 interface; the second interface group is connected to a second serial port card with an RS422 interface; and the third interface group is connected to a third serial port card with an RS232 interface.

3. The test board for digital optical terminal communication according to claim 2, characterized in that: The first interface group includes a first serial port direct connection interface and a first serial port cross connection interface; wherein, The first serial port card is connected to the first serial port direct connection port to complete the connection between the host computer and the digital optical terminal; The first serial port card is connected to the first serial port cross interface to complete the connection between the host computer and the terminal system.

4. The test board for digital optical terminal communication according to claim 2, characterized in that: The second interface group includes a second serial port direct connection interface and a second serial port cross interface; wherein, The second serial port card is connected to the second serial port direct connection port to complete the communication connection between the host computer and the digital optical terminal; The second serial port card is connected to the second serial port cross interface to complete the connection between the host computer and the terminal system.

5. The test board for digital optical terminal communication according to claim 2, characterized in that: The third interface group includes a third serial port direct connection interface and a third serial port cross interface; wherein, The third serial port card is connected to the third serial port direct connection port to complete the connection between the host computer and the digital optical terminal; The third serial port card is connected to the third serial port cross interface to complete the connection between the host computer and the terminal system.

6. The test board for digital optical terminal communication according to claim 1, characterized in that: The digital optical terminal connection group includes a first connection end, a second connection end and a third connection end; wherein the first connection end is connected to the RS422 interface of the digital optical terminal, the second connection end is connected to the TTL interface of the digital optical terminal, and the third connection end is connected to the RS232 interface of the digital optical terminal.

7. The test board for digital optical terminal communication according to claim 6, characterized in that: The first connection end, the second connection end and the third connection end are circular self-locking connector plugs.

8. The test board for digital optical terminal communication according to claim 1, characterized in that: The terminal system connection group includes a fourth connection terminal, a fifth connection terminal and a sixth connection terminal; wherein the fourth connection terminal is connected to the RS422 interface of the terminal system, the fifth connection terminal is connected to the TTL interface of the terminal system, and the sixth connection terminal is connected to the RS232 interface of the terminal system.

9. The test board for digital optical terminal communication according to claim 8, characterized in that: The fourth connection end, the fifth connection end and the sixth connection end are circular self-locking connector sockets.

Images