CN219418148U - Serial port communication expansion module - Google Patents
Serial port communication expansion module Download PDFInfo
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- CN219418148U CN219418148U CN202223353654.1U CN202223353654U CN219418148U CN 219418148 U CN219418148 U CN 219418148U CN 202223353654 U CN202223353654 U CN 202223353654U CN 219418148 U CN219418148 U CN 219418148U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a serial port communication expansion module, which comprises an MCU module, wherein first communication equipment comprises a first data receiving port and a first data transmitting port, second communication equipment comprises a second data receiving port and a second data transmitting port, the MCU module comprises a third data receiving port and a third data transmitting port, the serial port communication expansion module further comprises an expansion module, the expansion module comprises a triode Q1 and a triode Q2, the E pole of the triode Q1 is connected with the E pole of the triode Q2, the E pole of the triode Q1 is connected with the third data transmitting port of the MCU module, the C pole of the triode Q1 is grounded, the C pole of the triode Q2 is grounded, the B pole of the triode Q1 is connected with the first data receiving port, and the B pole of the triode Q2 is connected with the second data receiving port.
Description
Technical Field
The utility model relates to the field of communication expansion modules, in particular to a serial port communication expansion module.
Background
In the chip use process, the resources of a chip are limited after all, for example, only 2 serial ports or one serial port can be used, and sometimes, the situation that a plurality of serial ports are needed to be used can be met in application, for example, an external remote communication port is basically the same as an internal factory test port or an external wireless communication port, and the internal communication mechanism is at most the difference of the authority, if the remote communication is available, the factory test communication is available, and Bluetooth or wireless external communication is available, so that 3 groups of serial ports are needed, and the common chip cannot be realized, and the higher-level multi-serial port chip can be replaced.
Disclosure of Invention
The utility model solves the technical problem of providing a serial port communication expansion module capable of realizing serial port communication expansion under the condition of shortage of chip port line resources.
The technical scheme adopted for solving the technical problems is as follows: serial communication expansion module, including the MCU module, still include first communication equipment and second communication equipment, first communication equipment includes first data receiving port and first data transmission mouth, second communication equipment includes second data receiving port and second data transmission mouth, the MCU module includes third data receiving port and third data transmission mouth, still includes expansion module, expansion module includes triode Q1 and triode Q2, triode Q1's E utmost point is connected with triode Q2's E utmost point and MCU module's third data transmission mouth, triode Q1's C utmost point ground connection, triode Q2's C utmost point ground connection, triode Q1's B utmost point is connected with first data receiving port, triode Q2's B utmost point is connected with second data receiving port, triode Q1's E utmost point is connected with first resistance's one end, first resistance is connected with first resistance's the other end.
Further is: the first communication equipment is a Bluetooth module, a RES-N port of the Bluetooth module is connected with a first resistor, and the other end of the first resistor is connected with a second power supply.
Further is: the second communication equipment is a USB module, a capacitor C13 and a capacitor C4 are connected between the power end and the grounding end of the USB module, a third power supply is connected to the power end of the USB module, the grounding end of the USB module is grounded, a second inductor L2 is arranged between the power end of the USB module and the third power supply, and a first inductor L1 is arranged between the grounding end of the USB module and the grounding end of the USB module.
Further is: the first power supply and the second power supply are 3.3V in size, and the third power supply is 5V in size.
Further is: the MCU module is an embedded MCU module.
The beneficial effects of the utility model are as follows: in the structure, through the design of the expansion module circuit, one data transmitting port can be connected with the data receiving ports of a plurality of communication devices, so that serial port communication expansion is realized under the condition of shortage of chip port line resources.
Drawings
Fig. 1 is a schematic structural diagram of a serial port communication expansion module according to an embodiment of the present application.
Fig. 2 is a schematic view of an apparatus 1 according to an embodiment of the present application.
Fig. 3 is a schematic diagram of an apparatus 2 according to an embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
As shown in fig. 1, the embodiment of the application discloses serial port communication expansion module, including the MCU module, still include first communication equipment and second communication equipment, first communication equipment includes first data receiving port and first data transmission mouth, second communication equipment includes second data receiving port and second data transmission mouth, the MCU module includes third data receiving port and third data transmission mouth, still includes expansion module, expansion module includes triode Q1 and triode Q2, triode Q1's E utmost point is connected with triode Q2's E utmost point, triode Q1's E utmost point is connected with MCU module's third data transmission mouth, triode Q1's C utmost point ground connection, triode Q2's C utmost point ground connection, triode Q1's B utmost point is connected with first data receiving port, triode Q2's E utmost point is connected with second data receiving port, triode Q1's E utmost point is connected with first one end of triode Q2's E, the other end is connected with first resistance.
Specifically, the MCU module is an embedded MCU module, and the embedded MCU module has the characteristic of fewer serial ports.
When the MCU module does not send information, the E pole of the triode Q1 and the E pole of the triode Q2 are pulled up to a high level, when the MCU module sends data to the first communication device, the E pole of the triode Q1 and the E pole of the triode Q2 are pulled up to a high level, so that the data flows to the first communication device and the second communication device through the E pole of the triode Q1 and the B pole of the triode Q2, and the data flows to the first communication device and the second communication device through the B pole of the triode Q1 and the triode Q2.
In the structure, through the design of the expansion module circuit, one data transmitting port can be connected with the data receiving ports of a plurality of communication devices, so that serial port communication expansion is realized under the condition of shortage of chip port line resources, meanwhile, in the structure, the arrangement of the triode Q1 and the triode Q2 plays a role in circuit isolation, and meanwhile, in the structure, interface expansion can be performed again according to actual requirements.
In this embodiment, the first communication device is a bluetooth module, the RES-N port of the bluetooth module is connected with a first resistor, the other end of the first resistor is connected with a second power supply, the second communication device is a USB module, the power end and the ground end of the USB module are connected with a capacitor C13 and a capacitor C4, the power end of the USB module is connected with a third power supply, the ground of the USB module is grounded, a second inductor L2 is provided between the power end and the third power supply of the USB module, and a first inductor L1 is provided between the ground end and the ground of the USB module.
Specifically, the first power supply and the second power supply have a size of 3.3V, and the third power supply has a size of 5V.
The setting of this structure can make bluetooth module and USB module be connected with a data input port and the data delivery outlet of MCU module jointly to realize the communication timesharing multiplexing, also solved the not enough problem of serial ports simultaneously.
While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.
Claims (5)
1. The serial communication expansion module is characterized in that: including MCU module, still include first communication equipment and second communication equipment, first communication equipment includes first data receiving mouth and first data transmission mouth, second communication equipment includes second data receiving mouth and second data transmission mouth, MCU module includes third data receiving mouth and third data transmission mouth, still includes expansion module, expansion module includes triode Q1 and triode Q2, triode Q1's E utmost point is connected with triode Q2's E utmost point, triode Q1's E utmost point is connected with triode Q2's third data transmission mouth with MCU module, triode Q1's C utmost point ground connection, triode Q2's C utmost point ground connection, triode Q1's B utmost point is connected with first data receiving mouth, triode Q2's B utmost point is connected with second data receiving mouth, triode Q1's E utmost point is connected with first resistance's one end with triode Q2's E utmost point, first resistance's the other end is connected with first power.
2. The serial communications expansion module of claim 1, wherein: the first communication equipment is a Bluetooth module, a RES-N port of the Bluetooth module is connected with a first resistor, and the other end of the first resistor is connected with a second power supply.
3. The serial communications expansion module of claim 2, wherein: the second communication equipment is a USB module, a capacitor C13 and a capacitor C4 are connected between the power end and the grounding end of the USB module, a third power supply is connected to the power end of the USB module, the grounding end of the USB module is grounded, a second inductor L2 is arranged between the power end of the USB module and the third power supply, and a first inductor L1 is arranged between the grounding end of the USB module and the grounding end of the USB module.
4. The serial communications expansion module of claim 3, wherein: the first power supply and the second power supply are 3.3V in size, and the third power supply is 5V in size.
5. The serial communications expansion module of claim 3, wherein: the MCU module is an embedded MCU module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223353654.1U CN219418148U (en) | 2022-12-14 | 2022-12-14 | Serial port communication expansion module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223353654.1U CN219418148U (en) | 2022-12-14 | 2022-12-14 | Serial port communication expansion module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219418148U true CN219418148U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223353654.1U Active CN219418148U (en) | 2022-12-14 | 2022-12-14 | Serial port communication expansion module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219418148U (en) |
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2022
- 2022-12-14 CN CN202223353654.1U patent/CN219418148U/en active Active
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