A universal smema signal conversion module

Abstract

The utility model relates to the field of automation equipment provides a general SMEMA signal conversion module, including the finished board, and is used for placing the shell of finished board, the finished board includes the printed board, the front surface welding of printed board has multiple groups of socket assembly, socket assembly includes IO bus interface, host computer SMEMA signal interface, lower computer SMEMA signal interface, IO bus interface is used for connecting host module through second wiring harness assembly, the back surface welding of printed board has signal isolation element, host computer SMEMA signal interface, lower computer SMEMA signal interface and IO bus interface are electric respectively with signal isolation element Connection, to realize the isolation interaction of the SMEMA signal of front end process equipment and rear end process equipment to host module respectively, the utility model highly integrated, the assembly is simple, and the module standardization, when applying in online type automation equipment, has improved design and production efficiency greatly.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment, and more specifically, to a general-purpose SMEMA signal conversion module. Background Technology

[0002] Online automation equipment, due to its flexible assembly characteristics, can be combined with online automation equipment of different functions and sequences to achieve various assembly processes, making it widely used in industries such as smart electronics, new energy vehicles, and solar photovoltaics. Since online automation equipment needs to transfer products or carriers between devices, signal exchange is usually performed to ensure smooth transmission. Compared to traditional communication exchange, the SMEMA standard protocol exchange is widely used in various automation equipment due to its more stable, simple, and efficient characteristics.

[0003] The SMEMA interface standard is an inter-device communication protocol developed by the Surface Mount Equipment Manufacturers Association (SMT). It is used for board transfer coordination between devices in an SMT production line. Its core is to achieve synchronous board delivery through a handshake mechanism of board-available and board-requesting signals, ensuring device interoperability and efficient operation.

[0004] The core hardware requirements of the SMEMA standard protocol are: 1. Each of the upstream and downstream equipment must have at least one pair of handshake IO signals (one for input and one for output); 2. The interface circuit adopts passive contacts or NPN type collector output to ensure electrical isolation between different equipment; 3. The interface between this equipment and the upstream and downstream equipment usually adopts the standard 14-pin SMEMA connector.

[0005] A standard SMEMA hardware circuit can lead to significant differences between circuits designed within the same company due to varying levels of expertise and understanding of the standard among electrical designers. These differences can even result in errors in the underlying principles, incorrect pin labeling, and other problems. These issues frequently cause waste of testing, production manpower, and materials, and they tend to recur despite repeated attempts to address them.

[0006] SMEMA hardware wiring is complex, and while the wiring of SMEMA connectors in upstream and downstream processes is similar, it also differs, often leading to incorrect wiring by inexperienced production workers. Furthermore, signals are dispersed between connection points. SMEMA connectors need to connect relay coils and contacts, DC terminal blocks, and controller I / O points. Production workers must be familiar with these electrical components and be able to accurately locate the corresponding pins to ensure correct wiring. This skill-required work incurs high labor costs, which inevitably translate into equipment costs, hindering product price competitiveness.

[0007] Meanwhile, each type of online device requires separate SMEMA schematic drawing and wiring, even though their hardware principles are the same. Designers and manufacturers are constantly performing repetitive drawing and assembly work. Traditional coil-contact relays are bulky; a single dual-rail SMEMA relay configuration requires 12 relays, significantly occupying control box space. This hinders the miniaturization of the control box and the equipment itself, and restricts the design space for the mechanical structure. Utility Model Content

[0008] The problem this invention addresses is how to provide a highly integrated, easy-to-assemble, universal SMEMA signal conversion module.

[0009] To address the aforementioned issues, this utility model provides a universal SMEMA signal conversion module, comprising: a fabricated board and a housing for placing the fabricated board. The fabricated board includes a printed circuit board (PCB). Multiple sets of socket assemblies are soldered to the front side of the PCB. Each socket assembly includes an I / O bus interface, a host computer SMEMA signal interface, and a slave computer SMEMA signal interface. The host computer SMEMA signal interface is used to connect to the signal interface of a front-end process device via a first wiring harness assembly. The slave computer SMEMA signal interface is used to connect to the signal interface of a back-end process device via the first wiring harness assembly. The I / O bus interface is used to connect to a main control module via a second wiring harness assembly. A signal isolation element is soldered to the back side of the PCB. The host computer SMEMA signal interface, the slave computer SMEMA signal interface, and the I / O bus interface are electrically connected to the signal isolation element, thereby achieving isolated interaction between the SMEMA signals of the front-end and back-end process devices and the main control module.

[0010] Furthermore, the signal isolation element is a surface-mount relay.

[0011] Furthermore, each set of the socket assembly corresponds to 6 of the relays, the IO bus interface is connected to 6 IO signals and power signals from the main control module, the host computer SMEMA signal interface and the slave computer SMEMA signal interface are respectively connected to 3 process signals from the front-end and back-end process equipment, and each IO signal is isolated and interacts with a corresponding process signal through one of the relays.

[0012] Furthermore, the six IO signals are respectively the host computer board request signal, the host computer board available signal, the host computer board defect signal, the slave computer board request signal, the slave computer board available signal, and the slave computer board defect signal; the three process signals connected to the host computer SMEMA signal interface are the host computer board request isolation signal, the host computer board available isolation signal, and the host computer board defect isolation signal; the three process signals connected to the slave computer SMEMA signal interface are the slave computer board request isolation signal, the slave computer board available isolation signal, and the slave computer board defect isolation signal.

[0013] Furthermore, both the host computer's SMEMA signal interface and the slave computer's SMEMA signal interface are 3.5mm pitch 6-pin pluggable terminal blocks, and the IO bus interface is DC2-2.54 2. 5-pin connector.

[0014] Furthermore, the first wiring harness assembly includes a 6-core cable, a 6-core pluggable terminal block with a 3.5mm pitch, and an SMEMA female connector. One end of the 6-core cable is connected to the 6-core pluggable terminal block via the 6-core pluggable terminal block, and the other end is connected to the SMEMA female connector. The SMEMA female connector receives the SMEMA signal from the process equipment through the third wiring harness assembly.

[0015] Furthermore, the third wiring harness assembly is a 6-core cable with SMEMA male plugs at both ends.

[0016] Furthermore, the second wiring harness assembly uses a 10-core cable with a MIL male connector at one end, which is used to connect to the IO bus interface.

[0017] Furthermore, multiple surface mount resistors and surface mount LEDs are soldered to the front side of the printed circuit board. The surface mount LEDs are used for signal status indication, and the surface mount resistors serve as current limiting resistors for the surface mount LEDs.

[0018] Furthermore, the bottom of the housing is also provided with a guide rail mounting groove that matches the guide rail.

[0019] Compared with the prior art, the beneficial effects of this utility model are: Through standardized interface design, each IO bus interface corresponds to a host computer SMEMA signal interface and a slave computer SMEMA signal interface, with isolation achieved through onboard relays. This enables signal interaction between upstream and downstream processes in the SMEMA protocol. When applied in online automation equipment, workers no longer need complex wiring on terminal blocks and connecting additional traditional relays to complete the corresponding connection of SMEMA signals to the industrial control computer's IO terminals. They only need to plug the signals from upstream and downstream equipment into this module's interface, solving problems such as repetitive design work, error-prone design, signal dispersion, complex and error-prone wiring, and low assembly efficiency. In the production and use of online automation equipment, the SMEMA signal conversion module facilitates subsequent principle design, assembly, troubleshooting, maintenance, repair, component upgrades, and replacements, greatly improving work efficiency and reducing labor and material costs. This device has a simple structure, is easy to manufacture, disassemble, and maintain, has standardized and complete functions, strong versatility, and can be widely used in online automation equipment, greatly improving design and production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall principle structure of an embodiment of the present utility model; Figure 2 A schematic diagram of the front structure of the plate manufactured according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the reverse side of the plate manufactured according to an embodiment of the present utility model. Figure 4 This is a schematic diagram of the circuit board of this utility model embodiment; Figure 5 This is a schematic diagram illustrating the application of the SMEMA signal conversion module in an automation system according to an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached figures: 1-Printed board; 2-Housing shell; 3-Guide rail mounting slot; 11-Printed board; 12-IO bus interface; 13-Host computer SMEMA signal interface; 14-Lower computer SMEMA signal interface; 15-Surface mount resistor; 16-Surface mount LED; 17-Signal isolation component. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative embodiment of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0025] like Figure 1-3 As shown, this utility model provides a universal SMEMA signal conversion module, including: a fabrication board 1, and a housing 2 for placing the fabrication board 1. The fabrication board 1 includes a printed circuit board 11, and multiple sets of socket assemblies are soldered to the front side of the printed circuit board 11. The socket assembly includes an I / O bus interface 12, a host computer SMEMA signal interface 13, and a slave computer SMEMA signal interface 14. The host computer SMEMA signal interface 13 is used to connect to the signal interface of the front-end process equipment through a first wiring harness assembly, and the slave computer SMEMA signal interface 14 is used to connect to the signal interface of the back-end process equipment through the first wiring harness assembly. The bus interface 12 is used to connect to the main control module through the second wiring harness assembly. A signal isolation element 17 is soldered on the reverse side of the printed circuit board 11. The host computer SMEMA signal interface 13, the slave computer SMEMA signal interface 14, and the IO bus interface 12 are electrically connected to the signal isolation element 17 to realize the isolation interaction of the SMEMA signals of the front-end process equipment and the back-end process equipment to the main control module. A number of surface mount resistors 15 and surface mount LEDs 16 are also soldered on the front side of the printed circuit board 11. The surface mount LEDs 16 are used for signal status indication, and the surface mount resistors 15 serve as current limiting resistors for the surface mount LEDs 16.

[0026] like Figure 1 As shown, the bottom of the housing 2 is also provided with a guide rail mounting groove 3 that matches the guide rail. The housing 2 is used to protect the circuit board. When in use, the SMEMA signal conversion module is generally installed in the electrical cabinet. The SMEMA signal conversion module can be fixed on the DIN rail in the electrical cabinet through the guide rail mounting groove 3.

[0027] like Figure 2 As shown in the figure, in this embodiment, two sets of socket assemblies are designed on the printed circuit board 11, which can realize the interaction between two sets of front-end and back-end process equipment via the SMEMA standard. The design of one or more sets of socket assemblies should also be within the protection scope of this invention. Among them, the signal isolation element 17 adopts a surface-mount relay, and each set of socket assemblies corresponds to 6 relays. The IO bus interface 12 connects 6 IO signals and power signals from the main control module. The host computer SMEMA signal interface 13 and the slave computer SMEMA signal interface 14 are respectively connected to 3 process signals from the front-end and back-end process equipment. Each IO signal is isolated and interacts with a corresponding process signal through one of the relays. Figure 3 In the circuit, corresponding to the two sets of socket assemblies, 12 surface-mount relays are soldered to the back of the printed circuit board 11. The host computer SMEMA signal interface 13, the slave computer SMEMA signal interface 14, and the IO bus interface 12 are connected to the relays through traces within the printed circuit board 11. This standardized, compact design of the socket assemblies and surface-mount relays on the circuit board significantly reduces the overall installation size. The illustrated SMEMA signal conversion module has a size of 58. 89.5 45mm, which is only one-third the space required for a traditional cabinet with 12 relays.

[0028] It should be noted that the six IO signals are respectively the host computer board request signal, the host computer board available signal, the host computer board unqualified signal, the slave computer board request signal, the slave computer board available signal, and the slave computer board unqualified signal; the three process signals connected to the host computer SMEMA signal interface 13 are the host computer board request isolation signal, the host computer board available isolation signal, and the host computer board unqualified isolation signal; the three process signals connected to the slave computer SMEMA signal interface 14 are the slave computer board request isolation signal, the slave computer board available isolation signal, and the slave computer board unqualified isolation signal.

[0029] like Figure 4As shown in the diagram, a set of socket components and their corresponding relays are used as an example. CN41 is the I / O bus interface, JM41 is the host computer SMEMA signal interface, JM42 is the slave computer SMEMA signal interface, K41-46 are relays, LED41-46 are surface-mount LEDs, and R41-46 are surface-mount resistors. In the bus signals transmitted by the I / O bus interface, X represents the input point connected to the industrial control computer (i.e., the main control module), and Y represents the output point connected to the industrial control computer. Of the six I / O signals of CN41, the inputs to the industrial control computer include a board-available signal from the host computer, a board-unqualified signal from the host computer, and a board-required signal from the slave computer. The outputs include a board-required signal from the host computer, a board-available signal to the slave computer, and a board-unqualified signal to the slave computer. In the input signal isolation, 24V powers the relays. The coil is connected to the inputs from JM41 and JM42. The two ends of the relay's open contacts are respectively connected to the 0V signal from the industrial control computer transmitted by CN41 and the input signal to CN41, thus achieving isolation through the relay. Taking the board signal from the host computer as an example, FrmIn1BrdRdy (the board isolation signal from the host computer) reaches the K42 coil, K42 is energized, the open contact is closed, and the board signal from the host computer to CN41 is connected to 0V, transmitting the signal. In the isolation of the output signal, the relay coil is connected to the output from CN41. The two ends of the relay's open contacts are respectively from the COM signal of the process equipment from JM41 or JM42 and the isolation output to JM41 or JM42, thus achieving isolation through the relay. Taking the board request signal from the host computer as an example, Input 1 requests board Y (host computer board request signal). Upon reaching coil K41, K41 is energized, the open contact closes, and JM41's ToIn1Rdy.NO (host computer board isolation signal) connects to ToIn1Rdy.COM (COM signal), achieving signal isolation transmission.

[0030] like Figure 5 As shown, when used in online automation equipment systems, the SMEMA signal conversion module and industrial control computer controller are generally installed in the electrical cabinet, while the upstream and downstream equipment, i.e., the upper and lower level machines, are installed at the equipment site.

[0031] Both the host computer's SMEMA signal interface and the slave computer's SMEMA signal interface are 3.5mm pitch 6-pin pluggable terminal blocks, and the IO bus interface is DC2-2.54 2. 5-pin connector; Inside the cabinet, the IO bus interface connects to the controller's IO and power terminals via a second wiring harness assembly. The second wiring harness assembly uses a 10-pin cable with a MIL male connector on one end. The MIL male connector is used to interface with the IO bus interface. The 10-pin cable connects to the IO and power terminals. The first wiring harness assembly includes a 6-pin cable, a 6-pin pluggable terminal with a 3.5mm pitch, and an SMEMA female connector. The 6-pin pluggable terminal connects to the host computer's SMEMA signal interface and the slave computer's SMEMA signal interface. The SMEMA female connector is generally located on the surface of the cabinet. The SMEMA female connector connects to the host computer's or slave computer's SMEMA signal interface via a third wiring harness assembly. This SMEMA signal interface also uses an SMEMA female connector. The third wiring harness assembly is a 6-pin cable with SMEMA male connectors at both ends.

[0032] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A universal SMEMA signal conversion module, characterized in that, include: The assembly includes a board (1) and a housing (2) for placing the board (1). The board (1) includes a printed circuit board (11). Multiple sets of socket assemblies are soldered to the front side of the printed circuit board (11). The socket assemblies include an IO bus interface (12), a host computer SMEMA signal interface (13), and a slave computer SMEMA signal interface (14). The host computer SMEMA signal interface (13) is used to connect to the signal interface of the front-end process equipment through a first wiring harness assembly. The slave computer SMEMA signal interface (14) is used to connect to the signal interface of the back-end process equipment through the first wiring harness assembly. The IO bus interface (12) is used to connect to the main control module through a second wiring harness assembly. A signal isolation element (17) is soldered to the back side of the printed circuit board (11). The host computer SMEMA signal interface (13), the slave computer SMEMA signal interface (14), and the IO bus interface (12) are electrically connected to the signal isolation element (17) respectively to realize the isolation interaction of the SMEMA signals of the front-end process equipment and the back-end process equipment to the main control module.

2. The universal SMEMA signal conversion module according to claim 1, characterized in that, The signal isolation element (17) adopts a surface-mount relay. Each set of the socket assembly corresponds to 6 relays. The IO bus interface (12) is connected to 6 IO signals and power signals from the main control module. The host computer SMEMA signal interface (13) and the slave computer SMEMA signal interface (14) are respectively connected to 3 process signals from the front-end and back-end process equipment. Each IO signal is isolated and interacts with a corresponding process signal through one of the relays.

3. The universal SMEMA signal conversion module according to claim 2, characterized in that, The six IO signals are respectively the host computer board request signal, the host computer board available signal, the host computer board unqualified signal, the slave computer board request signal, the slave computer board available signal, and the slave computer board unqualified signal; the three process signals connected to the host computer SMEMA signal interface (13) are the host computer board request isolation signal, the host computer board available isolation signal, and the host computer board unqualified isolation signal; the three process signals connected to the slave computer SMEMA signal interface (14) are the slave computer board request isolation signal, the slave computer board available isolation signal, and the slave computer board unqualified isolation signal.

4. The universal SMEMA signal conversion module according to claim 2, characterized in that, The universal SMEMA signal conversion module includes two sets of socket assemblies, and the overall size of the SMEMA signal conversion module is 58. 89.5 45mm.

5. The universal SMEMA signal conversion module according to claim 1, characterized in that, Both the host computer's SMEMA signal interface (13) and the slave computer's SMEMA signal interface (14) are 3.5mm pitch 6-pin pluggable terminal blocks. The IO bus interface (12) is DC2-2.54 2. 5-pin connector.

6. The universal SMEMA signal conversion module according to claim 5, characterized in that, The first wiring harness assembly includes a 6-core cable, a 6-core pluggable terminal block with a 3.5mm pitch, and an SMEMA female connector. One end of the 6-core cable is connected to the 6-core pluggable terminal block via the 6-core pluggable terminal block, and the other end is connected to the SMEMA female connector. The SMEMA female connector receives the SMEMA signal from the process equipment through the third wiring harness assembly.

7. The universal SMEMA signal conversion module according to claim 6, characterized in that, The third wiring harness assembly is a 6-core cable with SMEMA male connectors at both ends.

8. The universal SMEMA signal conversion module according to claim 7, characterized in that, The second wiring harness assembly uses a 10-core cable with a MIL male connector at one end, which is used to connect to the IO bus interface (12).

9. The universal SMEMA signal conversion module according to claim 1, characterized in that, The front side of the printed circuit board (11) is also soldered with multiple surface mount resistors (15) and surface mount LEDs (16). The surface mount LEDs (16) are used for signal status indication, and the surface mount resistors (15) serve as current limiting resistors for the surface mount LEDs (16).

10. The universal SMEMA signal conversion module according to claim 1, characterized in that, The bottom of the outer casing (2) is also provided with a guide rail mounting groove (3) that matches the guide rail.

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