USB-to-network multipath signal conversion circuit

Abstract

The utility model discloses a universal serial bus (USB)-to-network multipath signal conversion circuit. The circuit realizes signal input and intelligent distribution through a 24-line full-rate Type-C socket interface. According to the circuit, an input signal is divided into a network signal path and a high-speed differential signal straight-through path which respectively support gigabit network signal output and original high-speed differential signal transmission, and the requirements for low delay and high bandwidth are met. Meanwhile, the circuit further has a serial port signal processing function, and compatible conversion between a serial port protocol and a USB protocol is achieved through the USB-to-serial port chip. The circuit adopts a voltage conversion chip for stable power supply, is integrally designed on a 40mm * 50mm substrate, has the maximum thickness of 13mm, has the characteristics of low power consumption, high stability and adaptability to complex environments, and realizes efficient conversion and stable transmission of multiple paths of signals.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal conversion technical field especially relates to a USB converts network multichannel signal conversion circuit. BACKGROUND

[0002] In the development and debugging process of electronic equipment, the diversity and complexity of communication interface bring many challenges to the work. In the traditional test environment, it is often necessary to carry a large number of cables and various conversion equipment to realize the connection and communication between different communication interfaces, which not only increases the complexity and cost of the equipment, but also reduces the work efficiency. Especially for portable handheld devices, in order to ensure the waterproof performance and other performance requirements of the equipment, only limited interfaces can be reserved, and frequent plugging and unplugging operations will not only seriously affect the interface life, but also greatly delay the development process.

[0003] Under this condition, a customized integrated circuit board becomes an urgent need. This kind of circuit board can optimize the design of wiring and impedance matching, etc., to ensure the integrity and high speed of the signal in the transmission process. At the same time, by controlling the size of the circuit board, the convenience of the equipment can be considered while ensuring the performance, so that the test environment is more simple and efficient. In addition, the customized integrated circuit board can also avoid the complex test environment construction, improve the stability of the test environment, and greatly reduce the waste of unnecessary resources, so as to effectively improve the efficiency and reliability of the development and debugging of electronic equipment. SUMMARY

[0004] The utility model discloses a kind of USB converts network multichannel signal conversion circuit, solve the problem of above background technology.

[0005] The utility model discloses the following technical solutions are realized:

[0006] A kind of USB converts network multichannel signal conversion circuit, including 24 line full speed Type-C socket interface, the 24 line full speed Type-C socket interface is as total input and output interface, the input end of this Type-C socket interface is connected with double channel signal distributor and is divided into two ways by input signal, the output end of Type-C socket interface is connected with serial port signal path and network signal path respectively, the serial port signal path receives serial port signal and can output high-speed differential signal, the network signal path receives high-speed differential signal and can output network signal and high-speed differential signal.

[0007] Further,

[0008] The serial port signal path comprises a USB-to-serial chip, a second Micro-USB interface, an input end of the USB-to-serial chip is connected with an output end of the Type-C socket interface, an output end of the USB-to-serial chip is directly connected with an input end of the second Micro-USB interface, and the output end of the second Micro-USB interface is connected with a signal output end and a voltage conversion chip respectively, and the voltage conversion chip is also connected with the USB-to-serial chip for power supply.

[0009] Further,

[0010] The network signal path comprises a double-pole double-throw switch, a first Micro-USB interface, a USB-to-Ethernet chip, a network port transformer, and an RJ45 interface, the double-pole double-throw switch is connected with an output end of the Type-C socket interface, the double-pole double-throw switch is connected with an input end of the first Micro-USB interface and an input end of the USB-to-Ethernet chip respectively, an output end of the first Micro-USB interface is directly connected with the signal output end and the voltage conversion chip respectively, the voltage conversion chip is connected with the USB-to-Ethernet chip for power supply, an output end of the USB-to-Ethernet chip is connected with an input end of the network port transformer, an output end of the network port transformer is connected with the RJ45 interface, and the RJ45 interface is connected with the signal output end.

[0011] Further,

[0012] The voltage conversion chip adopts a 5V-to-3.3V voltage conversion chip.

[0013] Further,

[0014] The USB-to-serial chip can convert serial port signals into high-speed differential signals suitable for transmission of the second Micro-USB interface, and output the high-speed differential signals to the signal output end through the second Micro-USB interface, and two color LEDs are arranged on the serial port line of the USB-to-serial chip.

[0015] Further,

[0016] The two color LEDs are used for monitoring the output state of the serial port signals in real time, and different colors represent different signal states or error prompts.

[0017] Further,

[0018] The first Micro-USB interface directly outputs high-speed differential signals to the signal output end, the USB-to-Ethernet chip converts the received signals into network signals, and the network signals are transmitted to the signal output end through the network port transformer and the RJ45 interface.

[0019] The utility model discloses the beneficial effects of:

[0020] 1. The circuit distributes signals through a dual-channel signal distributor inside, realizing efficient conversion and transmission of network signals and serial port signals respectively. The network signal path supports the Gigabit Ethernet protocol, ensuring stable high-speed network signal output; the high-speed differential signal straight-through path meets the application requirements of low delay and high bandwidth, and is suitable for various scenes.

[0021] 2. The compatibility of traditional serial port protocol and USB protocol is realized through a USB-to-serial chip, greatly simplifying the device connection process. In addition, two different color LED lights monitor the signal transmission state in real time, which facilitates users to quickly locate faults and improves work efficiency.

[0022] 3. The circuit is highly integrated on a substrate with a size of 40mm*50mm and a maximum thickness of 13mm, so that all components can be compactly installed, facilitating carrying and use. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings described herein are used to provide further understanding of the embodiments of the present application, constitute a part of the present application, and do not constitute a limitation on the embodiments of the present application. In the drawings:

[0024] Figure 1 is a structural schematic diagram of the present application. DETAILED DESCRIPTION

[0025] The present application will be further described in detail below in combination with embodiments and drawings, but the implementation manner of the present application is not limited thereto.

[0026] In the description of the present application, it should be pointed out that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "provided", "opened", "mounted", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Embodiment

[0029] Reference Figure 1 :

[0030] A USB-to-network multi-channel signal conversion circuit, comprising a 24-wire full-speed Type-C socket interface, the 24-wire full-speed Type-C socket interface as a total input and output interface, the input end of the Type-C socket interface is connected with a two-way signal distributor to divide the input signal into two ways, the output end of the Type-C socket interface is connected with a serial port signal path and a network signal path respectively, the serial port signal path receives serial port signals and can output high-speed differential signals, and the network signal path receives high-speed differential signals and can output network signals and high-speed differential signals.

[0031] Further,

[0032] The serial port signal path comprises a USB-to-serial chip, a second Micro-USB interface, the input end of the USB-to-serial chip is connected with the output end of the Type-C socket interface, the output end of the USB-to-serial chip is directly connected with the input end of the second Micro-USB interface, and the output end of the second Micro-USB interface is connected with a signal output end and a voltage conversion chip respectively, and the voltage conversion chip is also connected with the USB-to-serial chip for power supply.

[0033] Through the integration of the USB-to-serial chip and the second Micro-USB interface, efficient conversion of serial port signals to high-speed differential signals is realized, and protocol compatibility (such as supporting traditional serial port protocols such as RS232 and RS485) is improved, and at the same time, the voltage conversion chip provides stable power supply for the circuit, avoiding signal distortion caused by voltage fluctuation.

[0034] The second USB-to-serial chip (such as CP2102 or FT232RL) converts the serial port signals output by the Type-C interface into high-speed differential signals supported by the Micro-USB interface;

[0035] The VBUS pin in the second Micro-USB interface provides 5V voltage to the voltage conversion chip;

[0036] The voltage conversion chip (such as AMS11173.3) reduces the 5V input to 3.3V to supply power to the USB-to-serial chip, ensuring low power consumption and stable operation.

[0037] The second Micro-USB interface directly outputs the converted differential signals, which is suitable for devices (such as industrial control terminals) that require high-speed serial port communication.

[0038] Further,

[0039] The network signal path comprises a double-pole double-throw switch, a first Micro-USB interface, a USB-to-Ethernet chip, a network port transformer, and an RJ45 interface. The double-pole double-throw switch is connected to the output end of a Type-C socket interface. The double-pole double-throw switch is respectively connected to the input end of the first Micro-USB interface and the USB-to-Ethernet chip. The output end of the first Micro-USB interface is directly connected to the signal output end and a voltage conversion chip. The voltage conversion chip is connected to the USB-to-Ethernet chip for power supply. The output end of the USB-to-Ethernet chip is connected to the input end of the network port transformer. The output end of the network port transformer is connected to the RJ45 interface. The RJ45 interface is connected to the signal output end.

[0040] The double-pole double-throw switch realizes flexible switching of the signal path. High-speed differential signals can be directly connected to the first Micro-USB interface, or converted into gigabit network signals through the USB-to-Ethernet chip, meeting different scene requirements (such as coexistence of network debugging and high-speed data transmission).

[0041] The double-pole double-throw switch distributes signals to the first Micro-USB interface or the USB-to-Ethernet chip according to requirements.

[0042] The network port transformer isolates electromagnetic interference, improves the stability of network signals, and ensures that the RJ45 interface output meets the IEEE802.3 (Ethernet) standard.

[0043] The VBUS pin in the first Micro-USB interface provides 5V voltage to the voltage conversion chip. The voltage conversion chip reduces the 5V input voltage to 3.3V, which powers the USB-to-Ethernet chip, ensuring low power consumption and stable operation.

[0044] Further,

[0045] The voltage conversion chip uses a 5V-to-3.3V voltage conversion chip.

[0046] The 5V-to-3.3V voltage conversion chip provides stable power supply for low-voltage chips (such as USB-to-serial chip and USB-to-Ethernet chip), avoids damage to sensitive components caused by high voltage, and reduces overall power consumption.

[0047] Further,

[0048] The USB-to-serial chip can convert serial port signals into high-speed differential signals suitable for transmission by the second Micro-USB interface. The signals are output from the second Micro-USB interface to the signal output end. Two different color LED lights are provided on the serial port line of the USB-to-serial chip.

[0049] The compatibility conversion between serial port protocol and USB protocol is realized through a USB-to-serial chip, the communication obstacle between a traditional serial port device and a USB interface is solved, and a Micro-USB interface is used to output high-speed differential signals, so that the device connection is simplified.

[0050] Further,

[0051] The two different color LED lamps are used for monitoring the output state of the serial port signals in real time, and different colors represent different signal states or error prompts.

[0052] The different color LED lamps reflect the state of the serial port signals (such as normal transmission, error or interruption) in real time, so that the fault can be quickly located, and the debugging efficiency is improved.

[0053] In an embodiment,

[0054] Green LED: light up when signal transmission is normal (such as stable signal level).

[0055] Red LED: flash or always on when signal error (such as abnormal level, data packet loss) is detected.

[0056] The LED driving circuit is connected in parallel with the signal line through a current limiting resistor, so as to avoid affecting the signal integrity.

[0057] Further,

[0058] The first Micro-USB interface directly outputs high-speed differential signals to the signal output end, and the USB-to-Ethernet chip converts the received signals into network signals, and the network signals are transmitted to the RJ45 interface through the network transformer to the signal output end.

[0059] The first Micro-USB interface directly outputs high-speed differential signals, which saves the intermediate conversion link, reduces signal delay and loss, and is suitable for scenes with high real-time requirements (such as video acquisition or high-speed storage devices).

[0060] The principle of the utility model is:

[0061] The 24-line full-speed Type-C socket interface is used as a total input and output interface to receive high-speed differential signals input by external devices. The signals first enter a dual-channel signal distributor and are divided into two channels: one channel of signals enters a network signal path, the USB protocol is converted into a gigabit Ethernet protocol through a USB-to-Ethernet chip, and then a standard network signal is output by an RJ45 interface after electromagnetic interference is isolated by a network transformer, and this path can also be switched by a double-pole double-throw switch to directly output original high-speed differential signals from the first Micro-USB interface, so as to meet the application requirements of low delay and high bandwidth.

[0062] Meanwhile, the Type-C interface also outputs a serial port signal, and another path is a serial port signal path and receives the serial port signal, the serial port signal is converted into a high-speed differential signal conforming to the USB protocol by a USB-to-serial chip, and is output by a second Micro-USB interface.

[0063] In this process, the USB-to-serial chip realizes compatibility of the traditional serial port protocol and the USB protocol. Two different color LED lamps are connected in parallel on the serial port signal line, and real-time monitoring of the signal transmission state is realized, for example, green indicates normal, and red indicates error. In addition, the voltage conversion chip obtains 5V power from the Type-C interface and reduces the voltage to 3.3V to supply power to each chip, ensuring low power consumption and stable operation of the circuit, and all devices are highly integrated on a 40mm*50mm substrate with a maximum thickness of 13mm, and through optimization of the layout and anti-vibration and electromagnetic shielding design, the circuit is adapted to complex environments, realizes efficient conversion and stable transmission of multiple signals.

[0064] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above description is only a specific embodiment of the utility model and is not used to limit the protection scope of the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A USB-to-network multi-signal conversion circuit comprising a 24-wire full-speed Type-C receptacle interface, characterized in that, The 24-line full-rate Type-C socket interface is used as a total input and output interface, the input end of the Type-C socket interface is connected with a two-way signal distributor to divide the input signal into two ways, the output end of the Type-C socket interface is connected with a serial port signal path and a network signal path respectively, the serial port signal path receives serial port signals and can output high-speed differential signals, and the network signal path receives high-speed differential signals and can output network signals and high-speed differential signals.

2. The USB-to-network multi-signal conversion circuit according to claim 1, wherein, The serial port signal path includes a USB-to-serial chip, a second Micro-USB interface, the input end of the USB-to-serial chip is connected with the output end of the Type-C socket interface, the output end of the USB-to-serial chip is directly connected with the input end of the second Micro-USB interface, and the output end of the second Micro-USB interface is connected with a signal output end and a voltage conversion chip respectively, and the voltage conversion chip is also connected with the USB-to-serial chip for power supply.

3. The USB-to-network multi-signal conversion circuit of claim 1, wherein, The network signal path includes a double-pole double-throw switch, a first Micro-USB interface, a USB-to-Ethernet chip, a network port transformer and an RJ45 interface, the double-pole double-throw switch is connected with the output end of the Type-C socket interface, the double-pole double-throw switch is connected with the input end of the first Micro-USB interface and the USB-to-Ethernet chip respectively, the output end of the first Micro-USB interface is directly connected with the signal output end and the voltage conversion chip respectively, the voltage conversion chip is connected with the USB-to-Ethernet chip for power supply, the output end of the USB-to-Ethernet chip is connected with the input end of the network transformer, the output end of the network transformer is connected with the RJ45 interface, and the RJ45 interface is connected with the signal output end.

4. The USB-to-network multi-signal conversion circuit according to claim 3 or 2, characterized in that, The voltage conversion chip is a 5V-to-3.3V voltage conversion chip.

5. The USB-to-network multi-signal conversion circuit of claim 2, wherein, The USB-to-serial chip can convert serial port signals into high-speed differential signals suitable for the transmission of the second Micro-USB interface, and output the high-speed differential signals to the signal output end through the second Micro-USB interface, and two different color LED lamps are arranged on the serial port line of the USB-to-serial chip.

6. The USB-to-network multi-signal conversion circuit according to claim 5, wherein, The two different color LED lamps are used for real-time monitoring of the output state of the serial port signals, and different colors represent different signal states or error prompts.

7. The USB-to-network multi-signal conversion circuit according to claim 3, wherein, The first Micro-USB interface directly outputs high-speed differential signals to the signal output end, the USB-to-Ethernet chip converts the received signals into network signals, and the network signals are transmitted to the signal output end through the network port transformer and the RJ45 interface.

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