CN210324192U - USB long-distance transmission device - Google Patents
USB long-distance transmission device Download PDFInfo
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- CN210324192U CN210324192U CN201921431267.0U CN201921431267U CN210324192U CN 210324192 U CN210324192 U CN 210324192U CN 201921431267 U CN201921431267 U CN 201921431267U CN 210324192 U CN210324192 U CN 210324192U
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Abstract
The utility model discloses a USB long distance transmission device, its technical essential is: the front transmission device is used for converting USB data output by the data source end into a network communication format through a network port conversion chip and transmitting the data to the rear transmission device through the hundred million network cables; the rear transmission device is used for receiving network communication format data, converting the network communication format data into USB data, writing the data into a storage unit connected with the rear transmission device, prolonging the effective distance of USB interface data transmission through conversion of a transmission mode, and considering data transmission rate and quality and flexible installation places, thereby having wide applicability.
Description
Technical Field
The utility model belongs to the technical field of the electronic data security technique and specifically relates to a USB long distance transmission device.
Background
Electronic data preservation is currently a very important aspect of the industry, and for storage units, it is often desirable to have trouble-free access to the storage unit without loss of data. And at present, audio and video recorders are installed on public transport means such as buses, dangerous goods vehicles and the like, and for example, a data protection storage unit is connected to the recorders. The USB long-distance transmission device has the advantages that the USB long-distance transmission device is limited by the data transmission distance of the USB, the installation position of the data storage unit cannot be mounted in a concealed mode and is easy to damage, data stored in the data storage unit cannot be guaranteed, the storage unit can be mounted in a relatively concealed place through the USB long-distance transmission device, and the risk of damage is reduced.
The application of two-wire bidirectional serial bus with non-differential transmission is a widely applied technology, for example, the communication between PS/2 keyboard and mouse of PC and PC main board is the bus. The two-wire bidirectional serial bus is composed of a clock wire and a data wire, and data transmission is bidirectional and non-differential, wherein the clock wire transmits a serial clock signal, and the data wire transmits bidirectional serial data. The transmission distance of the bus data cannot generally exceed 2 meters.
When the two-wire system bidirectional serial data bus is applied to the occasion of serial data long-distance transmission, the distance between equipment ends for communication is long, data transmission is unsuccessful or unstable, and various common solutions are processed by adopting a method of adding one MCU to each of a receiving end and a transmitting end. The MCU of the transmitting end acquires and analyzes data transmitted by the transmitting end, and then remote transmission is carried out by adopting a three-wire system serial bus mode. And the MCU of the receiving end receives and analyzes the data transmitted from the three-wire system serial bus and transmits the data to the receiving end.
The solutions are complex in design, and the MCU is required to detect the baud rate of the transmitting end and analyze data, so that the universality is poor. In addition, the MCU can analyze only after receiving a frame of data completely, which inevitably has a certain delay, and is not suitable for occasions with strict time requirements.
Based on the above market demand and technical barriers, a solution for extending the storage distance and ensuring the data quality and security is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a USB long distance transmission device enables USB interface data transmission's effective distance extension through transmission mode's conversion to compromise data transmission rate, quality, thereby have extensive suitability.
In order to achieve the technical purpose, the utility model provides a following technical scheme: a USB long-distance transmission device comprises a front transmission device and a rear transmission device, wherein the front transmission device and the rear transmission device are arranged between a data source end and a storage unit which are far away from each other, the data source end is connected with the front transmission device through a USB connecting wire, the front transmission device is connected with the rear transmission device through a hundred mega network wire, the rear transmission device is connected with the storage unit through a USB connecting wire,
the front transmission device and the rear transmission device respectively comprise a USB transmission conversion control module, an Ethernet data transmission module and a power supply module for supplying power to the modules;
the USB transmission conversion control module comprises a conversion circuit chip and a peripheral resistor-capacitor element;
the Ethernet data transmission module comprises a network port conversion chip and a peripheral resistance-capacitance element;
the front transmission device is used for converting the USB data output by the data source end into a network communication format through the network port conversion chip and transmitting the data to the rear transmission device through the hundred mega network cable;
the rear transmission device is used for receiving the network communication format data, converting the network communication format data into USB data and writing the data into a storage unit connected with the rear transmission device.
Preferably, the network port conversion chips of the ethernet data transmission module are mainly RTL8211F and HR 911130C.
Preferably, the conversion circuit chip of the USB transmission conversion control module is mainly CH 317.
Preferably, the post-transmission device adopts a HUB FE2.1 and CH9317E single chip microcomputer and auxiliary elements for expanding and accessing a plurality of storage units.
Preferably, the conversion circuit chip CH317 supports remote expansion functions of the IO port, including remote power on/off and reset.
Preferably, the power supply module mainly comprises two CE8502AM power supply chips and related inductors, resistors and capacitors, and outputs +3.3V main voltage to supply power to the whole circuit and 1.05V voltage to supply power to the Ethernet data transmission module.
Preferably, the front transmission device and the rear transmission device support hot plugging, do not need hardware driving, and are compatible with all operating systems.
To sum up, the utility model discloses following beneficial effect has been gained:
1. the conversion of two data transmission modes is adopted, and the effective transmission distance can be prolonged by using a common hundred-million network cable;
2. the storage unit and the video data source are separately installed, the installation space is reduced, and hidden installation can be selected after the installation space is prolonged; the installation position can be flexibly selected, so that the difficulty of installation personnel is reduced;
3. the hot plug and play are supported, the hardware drive is not needed, the system is compatible with all operating systems, the expansibility is strong, and a plurality of storage units can be connected with one another.
Drawings
FIG. 1 is a schematic view of a structural framework of the present embodiment;
FIG. 2 is a schematic diagram of a circuit for representing the source end of data in the present embodiment;
FIG. 3 is a schematic circuit diagram showing a power module in this embodiment;
FIG. 4 is a schematic circuit diagram of the present embodiment for showing the ports of the RTL 8211F;
fig. 5 is a schematic circuit diagram for showing the ports of the chip CH317 in this embodiment;
fig. 6 is a schematic circuit diagram of the chip CH443 of the present embodiment;
fig. 7 is a schematic diagram of an extended function circuit for representing the CH317 chip in this embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): as shown in fig. 1 and 2, a USB long-distance transmission device includes a front transmission device and a rear transmission device, the front transmission device and the rear transmission device are installed between a data source end and a storage unit which are far away from each other, the data source end is connected with the front transmission device through a USB connection line, the front transmission device is connected with the rear transmission device through a hundred million network lines, and the rear transmission device is connected with the storage unit through a USB connection line. The front transmission device is used for converting the USB data output by the data source end into a network communication format through the network port conversion chip and transmitting the data to the rear transmission device through the hundred mega network cable; the rear transmission device is used for receiving the network communication format data, converting the network communication format data into USB data and writing the data into a storage unit connected with the rear transmission device. The data source end transmits data through the AD conversion module, the device adopts the conversion of two data transmission modes, the effective transmission distance can be prolonged by using a common hundred-megabyte network cable, the storage unit and the video data source are separately installed, the installation space is reduced, the hidden installation can be selected after the extension, the installation position can be flexibly selected, and the difficulty of installation personnel is reduced.
As shown in fig. 1 and 3, the front transmission device and the rear transmission device both include a USB transmission conversion control module, an ethernet data transmission module, and a power module for supplying power to each module, where the power module mainly includes two CE8502AM power chips and related inductors, resistors, and capacitors, outputs +3.3V main voltage to supply power to the whole circuit, and outputs 1.05V voltage to supply power to the ethernet data transmission module.
As shown in fig. 4-6, the USB transmission conversion control module includes a conversion circuit chip and a peripheral resistor-capacitor, and the ethernet data transmission module includes a network port conversion chip and a peripheral resistor-capacitor; the Ethernet data transmission module has mainly RTL8211F and HR911130C for port conversion chip, USB conversion control module with CH317 for conversion chip, and HUB FE2.1 and CH9317E monochip computer and auxiliary elements for expanding and accessing several memory units.
As shown in fig. 7, the conversion circuit chip CH317 supports remote expansion of the IO port, and at most supports two paths, including remote power on/off and restart demonstration, and the circuit principle is as shown in the figure. The front transmission device and the rear transmission device support hot plugging, do not need hardware driving, and are compatible with all operating systems.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The specific embodiments are only for explaining the present invention, and are not intended to limit the present invention, and those skilled in the art can modify the present invention as required after reading the present specification without any inventive contribution, but all the modifications are protected by patent laws within the scope of the claims of the present invention.
Claims (7)
1. A USB long distance transmission device is characterized in that: comprises a front transmission device and a rear transmission device, wherein the front transmission device and the rear transmission device are arranged between a data source end and a storage unit which are far away from each other, the data source end is connected with the front transmission device through a USB connecting wire, the front transmission device is connected with the rear transmission device through a hundred mega network cable, the rear transmission device is connected with the storage unit through a USB connecting wire,
the front transmission device and the rear transmission device respectively comprise a USB transmission conversion control module, an Ethernet data transmission module and a power supply module for supplying power to the modules;
the USB transmission conversion control module comprises a conversion circuit chip and a peripheral resistor-capacitor element;
the Ethernet data transmission module comprises a network port conversion chip and a peripheral resistance-capacitance element;
the front transmission device is used for converting the USB data output by the data source end into a network communication format through the network port conversion chip and transmitting the data to the rear transmission device through the hundred mega network cable;
the rear transmission device is used for receiving the network communication format data, converting the network communication format data into USB data and writing the data into a storage unit connected with the rear transmission device.
2. A USB long-distance transmission device according to claim 1, characterized in that: the network port conversion chips of the Ethernet data transmission module are mainly RTL8211F and HR 911130C.
3. A USB long-distance transmission device according to claim 1, characterized in that: the conversion circuit chip of the USB transmission conversion control module is mainly CH 317.
4. A USB long-distance transport device according to claim 3, characterized in that: the rear transmission device adopts a HUB FE2.1 and CH9317E singlechip and auxiliary elements for expanding and accessing a plurality of storage units.
5. A USB long-distance transmission device according to claim 4, wherein: the conversion circuit chip CH317 supports remote expansion functions of the IO port, including remote power on/off and restart.
6. A USB long-distance transmission device according to claim 1, characterized in that: the power supply module mainly comprises two CE8502AM power supply chips and related inductors, resistors and capacitors, and outputs +3.3V main voltage to supply power to the whole circuit and 1.05V voltage to supply power to the Ethernet data transmission module.
7. A USB long-distance transmission device according to claim 1, characterized in that: the front transmission device and the rear transmission device support hot plugging, do not need hardware driving, and are compatible with all operating systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921431267.0U CN210324192U (en) | 2019-08-30 | 2019-08-30 | USB long-distance transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921431267.0U CN210324192U (en) | 2019-08-30 | 2019-08-30 | USB long-distance transmission device |
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| CN210324192U true CN210324192U (en) | 2020-04-14 |
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| CN201921431267.0U Active CN210324192U (en) | 2019-08-30 | 2019-08-30 | USB long-distance transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115328837A (en) * | 2022-08-22 | 2022-11-11 | 北京小鸟科技股份有限公司 | Method for supporting USB2.0 ultra-long distance transmission |
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2019
- 2019-08-30 CN CN201921431267.0U patent/CN210324192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115328837A (en) * | 2022-08-22 | 2022-11-11 | 北京小鸟科技股份有限公司 | Method for supporting USB2.0 ultra-long distance transmission |
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