CN205283577U - Device through high speed bus extension multichannel RS422485 interface - Google Patents
Device through high speed bus extension multichannel RS422485 interface Download PDFInfo
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- CN205283577U CN205283577U CN201521002167.8U CN201521002167U CN205283577U CN 205283577 U CN205283577 U CN 205283577U CN 201521002167 U CN201521002167 U CN 201521002167U CN 205283577 U CN205283577 U CN 205283577U
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Abstract
The utility model relates to a device through high speed bus extension multichannel RS422485 interface, the device include treater, high speed bus, protocol conversion circuit and the RS422485 interface drive circuit who is used for disposing number of interfaces and communication form, and the treater passes through high speed bus and protocol conversion circuit connection, and the protocol conversion circuit is connected with RS422485 interface drive circuit. The utility model discloses 1 way high speed interface of accessible extension multichannel RS422485 interface to can be by the nimble quantity and communication form that dispose the interface of treater, great reinforcing the extended capability of low -speed interface of system, circuit occupation space is little, interface throughput is big, and has effectively improved data transmission efficiency, is applicable to the relevant application that multichannel RS422485 interface is externally expanded to the treater high speed bus.
Description
Technical field
The utility model is specifically related to a kind of device by high speed bus extension hyperchannel RS422/485 interface.
Background technology
Along with airborne electronic equipment comprehensive core processing device (ICP) inside modules (treater and treater, treater and Bus Interface Chip) mutual data volume increases rapidly, the processing power of CPU and the interface requirement of peripheral bus is higher, between plate, signal has turned to PCI gradually, the high speed communication protocol interface types such as PCI-E, RapidIO. Simultaneously, the hyperchannel RS422/485 low-speed communication agreement used between the avionic device and system thereof of long period formation, for the Signal transmissions that the data volumes such as general steering order and general status information are little, also still play an important role in airborne system.
Practical novel content
The utility model provides a kind of device by high speed bus extension hyperchannel RS422/485 interface, shares a road high-speed transfer bus to realize multi-path low speed interface, it is to increase the transmission process efficiency of data.
For achieving the above object, the inventive system comprises the treater for configuring interface quantity and the form that communicates, high speed bus, protocol conversion circuitry and RS422/485 interface driving circuit, treater is connected with protocol conversion circuitry by high speed bus, and protocol conversion circuitry is connected with RS422/485 interface driving circuit.
Described protocol conversion circuitry comprises principal and subordinate's two panels protocol conversion chip, and master agreement conversion chip is connected with from protocol conversion chip by outside expansion bus.
Described high speed bus is PCI-E bus.
Described RS422/485 interface driving circuit is the driving chip of isolated from power.
The beneficial effects of the utility model: the utility model is by 1 tunnel high speed interface expansion multichannel RS422/485 interface, and can by the quantity of treater flexible configuration interface and the form that communicates, enhance the extended capability of the low speed interface of system greatly, circuit footprint is little, interface throughput is big, and effectively improve data transmission efficiency, it is applicable to for the treatment of device high speed bus the related application of external expansion hyperchannel RS422/485 interface.
Communication protocol conversion circuit comprises two panels protocol conversion chip, and every sheet can expand 8 tunnel UART interface, can meet the expansion requirement of 1 tunnel high speed bus to maximum 16 road RS422/485 interfaces.
RS422/485 interface driving circuit adopts the driving circuit of isolated from power, it is to increase reliable communications.
High speed bus of the present utility model adopts PCI-Express bus (PCIE), and PCIE is up-to-date bus and interface standard, transfer speed height, can meet in the present and the future's certain time the demand of low-speed device and the high speed equipment occurred.
Accompanying drawing explanation
Fig. 1 is that the present embodiment is by high speed bus extension hyperchannel RS422/485 interface arrangement schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described in detail.
As shown in Figure 1, the device of the present embodiment comprises the treater 1 for configuring interface quantity and the form that communicates, serial high speed bus 3, protocol conversion circuitry 2 and RS422/485 interface driving circuit 4, treater is connected with protocol conversion circuitry 2 by serial high speed bus 3, and protocol conversion circuitry 2 is connected 4 with RS422/485 interface driving circuit.
Wherein, communication protocol conversion circuit comprises two panels protocol conversion chip, and a slice is master agreement conversion chip 5, and another sheet is from protocol conversion chip 6, every sheet can expand 8 tunnel UART interface 8, realizes two panels principal and subordinate's protocol conversion chip by outside expansion bus 7 and is connected. Communication Protocol Conversion chip is conventional protocol conversion chip of the prior art, no longer its principle is described in detail here.
RS422/485 interface driving circuit 4 adopts the driving circuit of isolated from power, it is to increase reliable communications.
The treater of the present embodiment is provided with treater end configuration software, treater end configuration software completes at treater unit, expand circuit part (comprising protocol conversion circuitry and RS422/485 interface driving circuit) by PCIE bus and interface to be connected, the groundwork completed comprises: using the multichannel general serial interface of expansion as an end points equipment of treater end PCIE bus, it is achieved PCIE bus is to the Initialize installation of protocol conversion chip; According to application demand, number of channels is configured, configurable at most 16 tunnel UART interface; Setting the communication speed of each passage according to demand, highest communication speed is 15Mbps.
The present embodiment is by the 1 maximum 16 road RS422/485 interfaces 9 of road PCIE high speed bus extension, and can by the quantity of treater flexible configuration interface and the form that communicates, enhance the extended capability of the low speed interface of system greatly, and effectively improve data transmission efficiency.
Claims (4)
1. one kind is passed through the device of high speed bus extension hyperchannel RS422/485 interface, it is characterized in that, this device comprises the treater for configuring interface quantity and the form that communicates, serial high speed bus, protocol conversion circuitry and RS422/485 interface driving circuit, treater is connected with protocol conversion circuitry by serial high speed bus, and protocol conversion circuitry is connected with RS422/485 interface driving circuit.
2. according to claim 1 by the device of high speed bus extension hyperchannel RS422/485 interface, it is characterized in that, described protocol conversion circuitry comprises principal and subordinate's two panels protocol conversion chip, and master agreement conversion chip is connected with from protocol conversion chip by outside expansion bus.
3. according to claim 1 by the device of high speed bus extension hyperchannel RS422/485 interface, it is characterised in that, described high speed bus is PCI-E bus.
4. according to claim 1 by the device of high speed bus extension hyperchannel RS422/485 interface, it is characterised in that, described RS422/485 interface driving circuit is the driving chip of isolated from power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521002167.8U CN205283577U (en) | 2015-12-05 | 2015-12-05 | Device through high speed bus extension multichannel RS422485 interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521002167.8U CN205283577U (en) | 2015-12-05 | 2015-12-05 | Device through high speed bus extension multichannel RS422485 interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283577U true CN205283577U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521002167.8U Active CN205283577U (en) | 2015-12-05 | 2015-12-05 | Device through high speed bus extension multichannel RS422485 interface |
Country Status (1)
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| CN (1) | CN205283577U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901447A (en) * | 2017-12-08 | 2019-06-18 | 郑州宇通客车股份有限公司 | A kind of CAN bus expanding unit |
| CN110737624A (en) * | 2019-09-23 | 2020-01-31 | 天津市英贝特航天科技有限公司 | circuit for realizing PCIE bus switching peripheral mounting |
-
2015
- 2015-12-05 CN CN201521002167.8U patent/CN205283577U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901447A (en) * | 2017-12-08 | 2019-06-18 | 郑州宇通客车股份有限公司 | A kind of CAN bus expanding unit |
| CN109901447B (en) * | 2017-12-08 | 2020-12-08 | 郑州宇通客车股份有限公司 | CAN bus extension device |
| CN110737624A (en) * | 2019-09-23 | 2020-01-31 | 天津市英贝特航天科技有限公司 | circuit for realizing PCIE bus switching peripheral mounting |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |