Digital quantity acquisition module
By designing a digital quantity acquisition module, the problems of large size and complex wiring of the PLC control cabinet are solved, fast signal acquisition and efficient operation are achieved, and the protection level is improved.
Patent Information
- Application Number
- CN202423072846.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing PLC control cabinets need to be configured with a large number of digital modules, resulting in large size, complex wiring and low protection level.
A digital quantity acquisition module is designed, which includes a housing, a circuit board, a digital quantity acquisition port, a bus communication port and an indicator light. It transmits signals through the Ethernet protocol to achieve rapid acquisition and transmission of multi-channel digital signals, reduce the number of wires, and improve the protection level.
It realizes a miniaturized and concise wiring method, improves the signal acquisition speed and equipment operation efficiency, enhances the protection level, and reduces wiring costs.
Smart Images
Figure CN223486403U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of information transmission technology, and in particular to a digital acquisition module. Background Technology
[0002] Most current control systems use programmable logic controllers (PLCs) as control cabinets, which often employ traditional wiring methods. This wiring is complex, the wire connections are messy, inefficient, and prone to errors.
[0003] Programmable logic control systems (PLCs) need to collect a large number of digital signals as input reference values for algorithms during automatic control processes, such as push-button switch signals, digital signals generated by indenter photoelectric sensors, through-beam photoelectric sensors, proximity sensors, etc.
[0004] In existing technologies, multiplexing chips are used to acquire multiple digital signal data. This requires simultaneous high-speed acquisition of all generated digital signals, resulting in a slow acquisition speed. The multiplexing chip then transmits the acquired data to the PLC, which necessitates a large number of digital modules in the PLC to meet the requirements of acquiring and controlling multiple digital signals. This leads to a larger PLC control cabinet, and the size of the PLC control cabinet also limits the number of digital modules, thus limiting the number of digital signals that the PLC can receive. Furthermore, the protection level of the digital modules inside the PLC is typically IP20, which is low and provides poor waterproof and dustproof performance. Utility Model Content
[0005] The purpose of this invention is to provide a digital signal acquisition module to solve the technical problem in the prior art that PLCs need to be configured with a large number of digital signal acquisition modules to meet the needs of multiple digital signals, resulting in large size and messy wiring.
[0006] This application provides a digital signal acquisition module, comprising: a housing with multiple mounting ports; a circuit board disposed inside the housing; at least two digital signal acquisition ports passing through the mounting ports and electrically connected to the circuit board; the digital signal acquisition ports being connected to a signal transmission line, the other end of which is connected to a device that emits digital signals; at least one bus communication port passing through the mounting ports and electrically connected to the circuit board; the bus communication port being connected to a bus, the other end of which is connected to a programmable logic control system.
[0007] In some embodiments of this application, a solid adhesive is also included. The solid adhesive is adhered inside the housing and located on the side of the circuit board away from the mounting opening. The housing includes a mounting side with a mounting opening, and the projection of the solid adhesive on the mounting side can cover the projection of the circuit board on the mounting side.
[0008] In some embodiments of this application, the bus is a network cable using the Ethernet protocol, so that the signals acquired by the digital acquisition module can be uploaded to the programmable logic control system via the network cable.
[0009] In some embodiments of this application, at least one power port is also included, which is disposed in the mounting opening and connected to a power cord.
[0010] In some embodiments of this application, there are 8n digital acquisition ports, where n is a positive integer.
[0011] In some embodiments of this application, there are two or more bus communication ports, and the multiple bus communication ports are powered independently.
[0012] In some embodiments of this application, there are two or more power ports, and multiple power ports are connected to a power source through independent power lines.
[0013] In some embodiments of this application, indicator lights are also included, including module status indicator lights and / or port status indicator lights and / or power indicator lights.
[0014] In some embodiments of this application, the housing includes a mounting side with a mounting port and an extension side. The mounting side has a mounting port, and the edge of the mounting side extends rearward to form an extension side. The mounting side has a connection opening for a connecting extension post to pass through.
[0015] In some embodiments of this application, the circuit board and the mounting side are threaded together by a threaded component to fix the circuit board and the mounting side together.
[0016] This application has at least the following positive effects:
[0017] This utility model provides a digital signal acquisition module, including a housing with multiple mounting ports; a circuit board located inside the housing; at least two digital signal acquisition ports passing through the mounting ports and electrically connected to the circuit board; the digital signal acquisition ports being connected to signal transmission lines, the other end of which is connected to a device emitting digital signals; and at least one bus communication port passing through the mounting ports and electrically connected to the circuit board. The bus communication port is connected to a bus, the other end of which is connected to a programmable logic control system. Only one digital signal acquisition module is needed to acquire multiple digital signals, resulting in a smaller size, more compact appearance, convenient wiring, and faster signal acquisition speed. This helps to reduce the size of the PLC, decrease PLC wiring costs, shorten logic control time, and increase equipment operating efficiency. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is an appearance diagram of a digital signal acquisition module according to the present invention;
[0020] Figure 2 This is another perspective view of the digital acquisition module of this utility model;
[0021] Figure 3 This is a split view of a digital acquisition module according to the present invention;
[0022] Icons: 100, Digital signal acquisition module; 1, Housing; 11, Mounting port; 121, Module status indicator; 122, Port status indicator; 123, Power indicator; 13, Mounting side; 131, Connection opening; 14, Connection side; 2, Circuit board; 3, Digital signal acquisition port; 4, Bus communication port; 5, Solid glue; 6, Power port; 7, Threaded parts; 8, Connection extension post. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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 a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," and "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0026] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] Programmable logic control systems (PLCs) need to collect a large number of digital signals as input reference values for algorithms during automatic control processes, such as push-button switch signals, digital signals generated by indenter photoelectric sensors, through-beam photoelectric sensors, proximity sensors, etc.
[0028] In existing technologies, multiplexing chips are used to acquire multiple digital signal data. This requires simultaneous high-speed acquisition of all generated digital signals, resulting in a slow acquisition speed. The multiplexing chip then transmits the acquired data to the PLC, which necessitates a large number of digital modules in the PLC to meet the requirements of acquiring and controlling multiple digital signals. This leads to a larger PLC control cabinet, and the size of the PLC control cabinet also limits the number of digital modules, thus limiting the number of digital signals that the PLC can receive. Furthermore, the protection level of the digital modules inside the PLC is typically IP20, which is low and provides poor waterproof and dustproof performance.
[0029] Reference Figure 1-Figure 3This application provides a digital signal acquisition module 100, including a housing 1. A circuit board 2 is housed inside the housing 1, and the back of the circuit board 2 is adhered with adhesive that hardens at room temperature. The housing 1 has multiple mounting ports 11 through which the circuit board 2 can be directly accessed. A bus communication port 4, indicator lights, digital signal acquisition ports 3, and a power port 6 pass through the mounting ports 11 and are soldered to the circuit board 2. Multiple sensors are connected to the digital signal acquisition ports 3, and the bus communication port 4 is connected to a bus, transmitting data to a PLC or other control system via a bus protocol.
[0030] Digital acquisition port 3 is electrically connected to circuit board 2. Digital acquisition port 3 is connected to signal transmission line. The other end of signal transmission line is connected to the device that emits digital signal. Bus communication port 4 is installed in mounting port 11 and is electrically connected to circuit board 2. Bus communication port 4 is connected to bus. The other end of bus is connected to programmable logic control system.
[0031] In the prior art, each multiplexing chip circuit corresponds to one type of digital signal, but only one signal can be connected. Eight multiplexing chips are needed to acquire eight digital signals. This application only requires one digital acquisition module 100 to acquire multiple digital signals. It is smaller in size, more compact in appearance, easier to wire, and has a faster signal acquisition speed. This is beneficial to reduce the size of the PLC, reduce the wiring cost of the PLC, shorten the logic control time, and increase the operating efficiency of the equipment.
[0032] In some embodiments, the mounting port 11 includes a bus mounting port 11, and the bus mounting port 11 has at least one. (This application's...) Figure 1 In the embodiment, there are two bus mounting ports 11 and two bus communication ports 4. The bus communication ports 4 are installed in the bus mounting ports 11. The bus communication ports 4 can be plugged into a bus. The other end of the bus is connected to the PLC. The digital signals acquired by the digital acquisition module 100 are uploaded to the PLC through the bus communication ports 4 and the bus. Only one or two buses are needed to realize the transmission of multiple digital signals, reducing the number of wires.
[0033] It should be noted that one of the two bus communication ports 4 can be used as a backup. Only one valid bus communication port 4 needs to be used to connect to the bus to upload digital signals to the PLC.
[0034] The bus protocol is Ethernet, and a network cable is connected to bus communication port 4 to transmit data to the PLC.
[0035] Mounting port 11 also includes digital input port 11, of which there are at least two. The number of digital input acquisition ports 3 matches the number of digital input port 11.
[0036] This application Figure 1 In the embodiment, the digital input port mounting port 11 has eight ports, and the digital input acquisition port 3 also has eight ports. The eight digital input acquisition ports 3 are installed one-to-one in the eight digital input port mounting ports 11. Each digital input port can receive one digital signal, i.e. Figure 1 In this embodiment, one digital acquisition module can receive eight digital signals, increasing the number of digital signals that can be acquired. This allows the digital signals to be acquired first by the digital acquisition module 100 and then uploaded to the PLC via the bus, enhancing the speed of digital signal acquisition and reducing the number of wires that need to be directly connected to the PLC, thus simplifying the PLC's wiring connection. In existing technologies, each multiplexing chip circuit corresponds to one type of digital signal, but only one signal can be input. Eight multiplexing chips are needed to acquire eight digital signals. This application eliminates the need for multiplexing chips; a single digital acquisition module 100 can acquire eight digital signals. It is smaller, more compact, easier to wire, and has a faster signal acquisition speed, which helps reduce the size of the PLC, lowers PLC wiring costs, shortens logic control time, and increases equipment operating efficiency, representing a significant improvement over existing technologies.
[0037] It should be noted that digital signal transmission can be achieved whether digital acquisition port 3 is fully connected or not.
[0038] Electrical control data is typically measured in units of one word, which equals two bytes, or 16 bits. Eight signals correspond to eight bits, or one byte. In this application, the digital acquisition port 3 is configured to correspond to one byte, which is convenient during use and avoids wasting data space.
[0039] If a digital input port corresponding to two bytes is required, a module with 16 digital input ports 3 can be made. The number of digital input ports 3 can be changed to meet different signal quantity requirements.
[0040] The mounting port 11 also includes a power port 6 mounting port 11. There is at least one power port 6 mounting port 11. Each power port 6 mounting port 11 has a power port 6. The power port 6 can be plugged into an industry-specific power cord. The other end of the power cord is connected to a power source.
[0041] This application Figure 1The power port 6 of the device has two mounting ports 11. As long as one of them is connected to a power cord, it can supply power to the digital signal acquisition module 100, enabling the digital signal acquisition module 100 to acquire digital signals and upload them to the PLC. The two power ports 6 can serve as backups for each other to reduce the probability of the digital signal acquisition module 100 being out of service due to damage to the power port 6.
[0042] The mounting port 11 also includes an indicator light mounting port 11, which is used to mount indicator lights. The indicator lights include a module status indicator light 121, a port status indicator light 122, and a power indicator light 123.
[0043] The module status indicator light 121 is installed between the bus communication port 4 and the digital acquisition port, and is arranged close to the bus communication port 4. The bus indicator light and the bus communication port 4 are connected by a circuit so that the bus indicator light will light up when the bus communication port 4 is running normally. Installers or users can judge the physical connection status and communication status of the bus communication port 4 by referring to the module status indicator light 121, which is convenient for later maintenance or repair.
[0044] It should be noted that in some embodiments, the number of module status indicator lights 121 is greater than the number of bus communication ports 4. The additional module status indicator lights 121 allow users to easily distinguish between the power port 6 and the bus port. (Refer to...) Figure 1 There are 3 module status indicator lights 121 and 2 power indicator lights 123. Users can easily identify the bus communication port 4 near the 3 module status indicator lights 121 and the power port 6 near the 2 power indicator lights 123, which is convenient for wiring.
[0045] Port status indicator lights 122 are installed near digital acquisition ports 3, and the number of port status indicator lights 122 is the same as the number of digital acquisition ports 3. One port status indicator light 122 corresponds to one digital acquisition port 3. When the digital acquisition port 3 is in normal working condition, the corresponding port status indicator light 122 is lit. Installers or users can determine the physical connection status and communication status of the digital acquisition port 3 by referring to the port status indicator lights 122. When there are two rows of digital acquisition ports 3, the port status indicators are set in the middle of the two rows of digital acquisition ports to make the correspondence between the port status indicator lights 122 and the digital acquisition ports 3 more obvious.
[0046] Power indicator lights 123 are installed between power port 6 and digital acquisition port 3, and are positioned close to power port 6. One power port 6 corresponds to one power indicator light 123. When the power port 6 is in normal working condition, the corresponding power indicator light 123 will light up. Installers or users can judge the physical connection status of power port 6 by power indicator lights 123, which is convenient for safety inspection and maintenance.
[0047] In some embodiments, the module status indicator 121, the port status indicator 122, and the power indicator 123 can be set to different colors to facilitate users in distinguishing the status of the indicator lights.
[0048] In some embodiments of this application, the housing 1 is a high-precision component manufactured as an integral part of a CNC machine tool, and is generally a long rectangular parallelepiped. It includes a mounting side 13 with a mounting port 11, and four extended side surfaces connected to the edge of the mounting side 13. The included angle between the extended side surfaces and the mounting side 13 is 90 degrees, and the mounting side 13 is provided with multiple mounting ports 11.
[0049] The circuit board 2 and the mounting side 13 are fastened together with screws so that the circuit board 2 is securely fixed inside the housing 1 and will not fall off as the digital acquisition module 100 moves.
[0050] The mounting side 13 has a top opening for inserting screws, which can be driven into the top opening to fix the digital acquisition module 100 to the mounting surface.
[0051] The four extended sides are rounded at the joints to make the joints smooth and reduce the probability of scratches during installation and maintenance by installers and users. It also makes the digital acquisition module 100 more aesthetically pleasing.
[0052] In some embodiments of this application, the adhesive can be a solid adhesive 5 that solidifies in the air and is insoluble in water. After the circuit board 2, indicator lights, bus communication port 4, digital acquisition port 3, and power port 6 are installed, the adhesive is poured into the space behind the circuit board 2 inside the housing 1, and the adhesive covers the entire circuit board 2. After the adhesive solidifies, the solid adhesive 5 adheres tightly to the back of the circuit board 2, which can significantly reduce the probability of water contact with the circuit board 2 and various electrically powered circuit components. The waterproof rating can reach IP67, which is a significant improvement compared to the IP20 waterproof rating of digital modules in the prior art.
Claims
1. A digital signal acquisition module, characterized in that, include: A housing, wherein the housing is provided with multiple mounting ports; A circuit board, which is disposed inside the housing; At least two digital acquisition ports are provided, which are inserted into the mounting port and electrically connected to the circuit board; the digital acquisition ports are connected to a signal transmission line, and the other end of the signal transmission line is connected to a device that emits digital signals; At least one bus communication port is disposed in the mounting port and electrically connected to the circuit board; the bus communication port is connected to a bus, and the other end of the bus is connected to a programmable logic control system.
2. The digital acquisition module according to claim 1, characterized in that, It also includes a solid adhesive, which is adhered inside the housing and located on the side of the circuit board away from the mounting port; the housing includes a mounting side with a mounting port, and the projection of the solid adhesive on the mounting side can cover the projection of the circuit board on the mounting side.
3. The digital acquisition module according to claim 1, characterized in that, The bus is a network cable using the Ethernet protocol, so that the signals acquired by the digital acquisition module can be uploaded to the programmable logic control system through the network cable.
4. The digital acquisition module according to claim 1, characterized in that, It also includes at least one power port, which passes through the mounting opening and is connected to a power cord.
5. The digital acquisition module according to claim 1, 2, 3, or 4, characterized in that, The number of digital acquisition ports is 8n, where n is a positive integer.
6. The digital acquisition module according to claim 1, 2, 3, or 4, characterized in that, The bus communication ports are two or more, and the multiple bus communication ports are powered independently.
7. The digital acquisition module according to claim 4, characterized in that, The power ports are two or more, and the multiple power ports are connected to the power source through independent power lines.
8. The digital acquisition module according to claim 4, characterized in that, It also includes indicator lights, including module status indicator lights and / or port status indicator lights and / or power indicator lights.
9. The digital acquisition module according to claim 4, characterized in that, The housing includes a mounting side with a mounting port and an extension side. The mounting side has a mounting port, and the edge of the mounting side extends rearward to form an extension side. The mounting side has a connection opening for inserting a connecting extension post.
10. The digital acquisition module according to claim 2 or 9, characterized in that, The circuit board and the mounting side are connected by a threaded connection to fix the circuit board and the mounting side in place.