CN104753827A - One-way safety communication fiber channel switch device - Google Patents
One-way safety communication fiber channel switch device Download PDFInfo
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- CN104753827A CN104753827A CN201310734821.3A CN201310734821A CN104753827A CN 104753827 A CN104753827 A CN 104753827A CN 201310734821 A CN201310734821 A CN 201310734821A CN 104753827 A CN104753827 A CN 104753827A
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Abstract
The invention relates to a one-way safety communication fiber channel switch device. The switch device comprises a switch chip, optical modules, a matching circuit and an impedance control circuit. The one-way safety communication fiber channel switch device has the technical effects that the optical modules can only receive data or can only transmit data through the impedance control circuit for controlling the connection between the optical modules and the switch chip, so that one-way safety communication is realized. Through combination of the optical modules, the one-way safety communication fiber channel switch device with a plurality of communication modes is realized.
Description
Technical field
The application relates to a kind of data transfer communications device, particularly relates to a kind of data transfer controller of fibre channel media.
Background technology
Key in background technology herein and describe paragraph.In the middle of traditional fibre channel media, in order to realize the proper communication of data, high-speed optical module with High Speed ICs (integrated circuit) chip interconnect in need to increase coupling matching circuit.The positive emitter coupled logic of PECL() when AC coupled outputs to the terminate load of 50 Ω, the positive emitter coupled logic of PECL(be considered) output add a direct current biasing resistor, as shown in Figure 2.Wherein the selection of R1 and R2 will meet following equation group:
R1V
cc/ (R1+R2)=V
cc-1.3V and R2/R1=50 Ω solves:
R1=130Ω, R2=82Ω For =+3.3V Supply
and
R1=180Ω, R2=68Ω For =+5V Supply
Traditional fibre channel media is bi-directional transfer of data.But have a lot of application places to guarantee safety, require that data can only be transmitted from a direction to another direction, traditional fibre channel media cannot be applied to this place, cannot realize one-way safety communication.
Summary of the invention
The present invention is directed in above-mentioned background technology the above-mentioned technical problem existed, propose the fibre channel media device of a kind of one-way safety communication.
The technical problem that the present invention solves comprises: improve the hardware circuit of light channel switch, one-way safety communication is realized by the AC coupled match circuit revising optical module, the various combination of the optical module communicated by one-way safety, realizes the one-way safety telecommunication optical fiber Channel Exchange machine becoming plurality of communication schemes.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of fibre channel media device of one-way safety communication, comprise exchange chip, optical module and corresponding match circuit, optical module is connected on exchange chip by AC coupled match circuit, described AC coupled match circuit comprises data transmit circuit and data receiver circuit, and further, described AC coupled match circuit contains impedance control circuit, by impedance control circuit, control the communication of optical module.
Wherein, described impedance control circuit, two two-way toggle switchs are had to be connected with data transmit circuit, one of them two-way toggle switch is pulled upward to positive source by the build-out resistor of 130 Ω data transmit circuit, another one two-way toggle switch is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω data transmit circuit, and wherein preferred resistance value is 2 k Ω; Described impedance control circuit has two double switches to be connected with data receiver circuit simultaneously, one of them two-way toggle switch is pulled upward to positive source by the build-out resistor of 130 Ω data receiver circuit, another one two-way toggle switch is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω data receiver circuit, and wherein preferred resistance value is 2 k Ω.
Further, described optical module is made can only to receive data or can only data be sent by controlling described two-way toggle switch.
Wherein, two two-way toggle switchs of described control data transtation mission circuit, one is in opening, and one is in closed condition, when described data transmit circuit is pulled upward to positive source by the build-out resistor of 130 Ω, data transmit circuit can connect and normally send data; When described data transmit circuit is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω, data transmit circuit can connect and can not send data.
Wherein, two two-way toggle switchs of described control data receiving circuit, one is in opening, and one is in closed condition, when described data receiver circuit is pulled upward to positive source by the build-out resistor of 130 Ω, data receiver circuit can connect and normal receive data; When described data receiver circuit is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω, data receiver circuit can connect and can not receive data.
By the two-way toggle switch of control data receiving circuit and data transmit circuit, when guaranteeing that the data receiver circuit of described optical module can receive data, data transmit circuit can not send data, and this optical module is merely able to receive data; Time the data transmit circuit of described optical module can send data, data receiver circuit can not receive data, and this optical module is merely able to send data.
Described optical module can have different combinations, and a kind of be an optical port of described switch is the optical module receiving only data, and other are the optical modules only sending data; Be an optical port of described switch be the optical module only sending data, other are the optical modules receiving only data; Be several ports of described switch be the optical module only sending data, other are the optical modules receiving only data.
By the various combination of described optical module, described one-way safety communication switchboard can have the many receipts of single-shot, multiple illuminators and single receiver, the combinations of communication mode that MIMO etc. are different.
The invention has the beneficial effects as follows, realize the one-way safety communication of data.
Can select can receive data or can not data be received by described two-way toggle switch control data receiving circuit, can select can send data or can not data be sent by described two-way toggle switch control data transtation mission circuit; Make described optical module can only receive data or can only data be sent, realize the one-way safety communication of data.
Further, by the various combination of described optical module, the fibre channel media of described one-way safety communication can have the many receipts of single-shot, multiple illuminators and single receiver, the combinations of communication mode that MIMO etc. are different.By the control to data transfer direction, realize the one-way safety communication of different communication compound mode.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, and illustrative examples of the present invention and explanation, for explaining the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the overall hardware circuit design figure of single-pass switch system of the present invention.
Fig. 2 shows the AC coupled match circuit figure that 1 × 9 traditional optical module is connected with exchange chip.
Fig. 3 shows the AC coupled match circuit figure that the present invention 1 × 9 optical module is connected with exchange chip.
Fig. 4 shows Single-Input Multiple-Output switch of the present invention.
Fig. 5 shows the present invention's many receipts single-shot switch.
Fig. 6 shows the multiple switch of the many receipts of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described, but the present invention is not limited thereto.Present invention resides in the various scheme that describes in specification and the reasonable combination by the various measures mentioned in this specification.
The invention provides the fibre channel media device of a kind of one-way safety communication, as shown in Figure 1, comprise AC power, described AC power after voltage stabilizing circuit, be connected to switch system and other need in the integrated circuit (IC) chip of power supply.Described switch comprises clock circuit and reset circuit, is all connected on the exchange chip of switch.
Further, described switch comprises optical module and corresponding AC coupled match circuit, and optical module is connected on exchange chip by described AC coupled match circuit.Described optical module can be that 1 × 9 optical module or other forms have transmission circuit and the optical module be connected with exchange chip by match circuit.Described switch, according to the model of the exchange chip chosen, can have N number of (N is the maximum port number that exchange chip is supported) optical module to be connected on described exchange chip by AC coupled match circuit.
Further, an impedance control circuit is comprised in the middle of described AC coupled match circuit, the impedance of this control circui build-out resistor.Described impedance control circuit is made up of two-way toggle switch resistance build-out resistor different from two kinds.The impedance of described build-out resistor has two kinds of values, and a kind of data transmit circuit of optical module that can allow is connected with data receiver circuit and communicates; But a kind of data transmit circuit of optical module that can allow is connected with data receiver circuit can not sends or receive data.
Enumerate the circuit diagram of a kind of applicable cases of the present invention below, namely under 3.3V operating voltage, adopt toggle switch to control, the AC coupled match circuit figure that 1 × 9 optical module is connected with exchange chip is specifically described.As shown in Figure 3, four two-way toggle switchs are had in the middle of impedance control circuit, wherein data receiver is connected to positive source by build-out resistor R5, R7 by toggle switch sw1, and in like manner, data receiver is connected to positive source by build-out resistor R11, R12 by toggle switch sw2; Data transmit circuit is connected to positive source by build-out resistor R1, R3 by toggle switch sw3, and in like manner, data transmit circuit is connected to positive source by build-out resistor R9, R10 by toggle switch sw4.Wherein build-out resistor R1, R3 and R5, R7 are 130 Ω, build-out resistor R11, R12 and R9, R10 be 1.5k Ω-2.5k Ω, are preferably 2k Ω.
When the two-way toggle switch of sw1 connects simultaneously, the two-way toggle switch of sw2 disconnects simultaneously, and data receiver circuit is connected to positive source by resistance R5, R7, can connect and normal receive data; But the two-way toggle switch of further sw3 disconnects simultaneously, and the two-way toggle switch of sw4 connects simultaneously, and data transmit circuit is connected to positive source by resistance R9, R10 resistance, can connect can not send data.Now optical module just can only receive data, can not send data; But on the other hand, when the two-way toggle switch of sw1 disconnects simultaneously, the two-way toggle switch of sw2 connects simultaneously, and data receiver circuit is connected to positive source by resistance R11, R12, can connect can not receive data; The two-way toggle switch of further sw3 connects simultaneously, and the two-way toggle switch of sw4 disconnects simultaneously, and data transmit circuit is connected to positive source by resistance R1, R3 resistance, can connect and normally can send data.Now, optical module is just merely able to send data, can not receive data.
Data receiver circuit and data transmit circuit all increase the transmitting-receiving that toggle switch and build-out resistor are free to control optical module simultaneously, also can according to the actual needs, selection only can increase toggle switch and build-out resistor in the middle of data transmit circuit or data receiver circuit.No matter be any compound mode, guarantee under this kind of compound mode, optical module can only send data or can only receive data, and bonding is to secure communication.
Impedance control circuit is not limited to the appearance shown in Fig. 3 in addition, as by a two-way toggle switch connection data transtation mission circuit to positive source, when this toggle switch connect on time, data transmit circuit can connect and normally send data, otherwise can not send data; By another two-way toggle switch connection data receiving circuit to positive source, when this toggle switch connect on time, data receiver circuit can connect and normal receive data, otherwise can not receive data.
By controlling the data receiver circuit of optical module or the toggle switch of data transmit circuit, optical module can be made to become only receipts and not send out or only send out the one-way communication optical module do not received.Control the toggle switch of all optical modules on switch, then all of the port of switch all can only one-way communication, just achieve the fibre channel media of one-way safety communication, data are by the switch of one-way communication, can only from the input of single-pass switch to output unidirectional delivery data, reversely can not transmit, ensure that the fail safe of data.
Divide three kinds of situations to illustrate, singly enter to have more one-way communication switch, enter singly to go out one-way communication switch more, multiple-input, multiple-output one-way communication switch:
When singly entering to have more, as shown in Figure 4, toggle switch sw1, sw4 of the impedance control circuit of one of them optical module of switch connect, toggle switch sw2, sw3 disconnect, this optical module can only receive data, and corresponding port can only input data, but cannot export data; Toggle switch sw1, sw4 of the impedance control circuit of other N number of optical module disconnect, and toggle switch sw2, sw3 connect, and be merely able to send data, corresponding N number of port to export data, can not input data.Switch only distributes the input data of 1 port, but does not make any amendment to data, and by the data allocations after distribution to N number of output port, and data from input to output unidirectional delivery data, can not reversely can only be transmitted.Wherein N+1 is the port sum of this switch.
Enter when singly going out, as shown in Figure 5, toggle switch sw1, sw4 of the impedance control circuit of one of them optical module of switch disconnect more, toggle switch sw2, sw3 connect, this optical module can only send data, and corresponding port can only export data, but cannot input data; Toggle switch sw1, sw4 of the impedance control circuit of other N number of optical module connect, and toggle switch sw2, sw3 disconnect, and be merely able to receive data, corresponding N number of port to input data, can not export data.Switch gathers N number of input data, but does not make any amendment to data, and is dealt into 1 output port by after the data summarization after gathering, and data from input to output unidirectional delivery data, can not reversely can only be transmitted.Wherein N+1 is the port sum of this switch.
When multiple-input, multiple-output, as shown in Figure 6, switch has toggle switch sw1, sw4 of the impedance control circuit of N number of optical module to connect, and toggle switch sw2, sw3 disconnect, and can only receive data, corresponding port can only input data, but cannot export data; Toggle switch sw1, sw4 of the impedance control circuit of other M optical module disconnect, and toggle switch sw2, sw3 connect, and be merely able to send data, a corresponding M port to export data, can not input data.Exchange and the input data of N number of port are gathered, but any amendment is not made to data, then the data after gathering are distributed, still any amendment is not made to data, and by the data allocations after distribution to M output port, and data from input to output unidirectional delivery data, can not reversely can only be transmitted.Wherein N+M is the port sum of this switch.
Claims (6)
1. the fibre channel media device of an one-way safety communication, comprise exchange chip, optical module and corresponding match circuit, optical module is connected on exchange chip by AC coupled match circuit, described AC coupled match circuit comprises data transmit circuit and data receiver circuit, it is characterized in that, described AC coupled match circuit contains impedance control circuit, by impedance control circuit, control the communication of optical module.
2. the fibre channel media device of one-way safety communication as claimed in claim 1, it is characterized in that, described impedance control circuit, two two-way toggle switchs are had to be connected with data transmit circuit, one of them two-way toggle switch is pulled upward to positive source by the build-out resistor of 130 Ω data transmit circuit, another one two-way toggle switch is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω data transmit circuit, and wherein preferred resistance value is 2 k Ω; Described impedance control circuit has two double switches to be connected with data receiver circuit simultaneously, one of them two-way toggle switch is pulled upward to positive source by the build-out resistor of 130 Ω data receiver circuit, another one two-way toggle switch is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω data receiver circuit, and wherein preferred resistance value is 2 k Ω.
3. the fibre channel media device of one-way safety communication as claimed in claim 2, it is characterized in that, two two-way toggle switchs of described control data transtation mission circuit, one is in opening, one is in closed condition, when described data transmit circuit is pulled upward to positive source by the build-out resistor of 130 Ω, data transmit circuit can connect and normally send data; When described data transmit circuit is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω, data transmit circuit can connect and can not send data.
4. the fibre channel media device of one-way safety communication as claimed in claim 3, it is characterized in that, two two-way toggle switchs of described control data receiving circuit, one is in opening, one is in closed condition, when described data receiver circuit is pulled upward to positive source by the build-out resistor of 130 Ω, data receiver circuit can connect and normal receive data; When described data receiver circuit is pulled upward to positive source by the build-out resistor of 1.5k Ω-2.5k Ω, data receiver circuit can connect and can not receive data.
5. the fibre channel media device of one-way safety communication as claimed in claim 4, is characterized in that, making described optical module can only receive data or can only send data by controlling described two-way toggle switch.
6. the fibre channel media device of one-way safety communication as claimed in claim 5, it is characterized in that, described optical module can have different combinations, and a kind of be an optical port of described switch is the optical module receiving only data, and other are the optical modules only sending data; Be an optical port of described switch be the optical module only sending data, other are the optical modules receiving only data; Be several ports of described switch be the optical module only sending data, other are the optical modules receiving only data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734821.3A CN104753827A (en) | 2013-12-27 | 2013-12-27 | One-way safety communication fiber channel switch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734821.3A CN104753827A (en) | 2013-12-27 | 2013-12-27 | One-way safety communication fiber channel switch device |
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| CN104753827A true CN104753827A (en) | 2015-07-01 |
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| CN201310734821.3A Pending CN104753827A (en) | 2013-12-27 | 2013-12-27 | One-way safety communication fiber channel switch device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106426A (en) * | 2006-07-11 | 2008-01-16 | 上海科泰信息技术有限公司 | Optical fiber access system for multi-service optical fiber transceiver |
| US8369347B2 (en) * | 2009-09-14 | 2013-02-05 | Futurewei Technologies, Inc. | Fiber channel over Ethernet and fiber channel switching based on Ethernet switch fabrics |
| CN202918270U (en) * | 2012-11-15 | 2013-05-01 | 安徽康海时代科技有限公司 | Optical module interface circuit |
-
2013
- 2013-12-27 CN CN201310734821.3A patent/CN104753827A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106426A (en) * | 2006-07-11 | 2008-01-16 | 上海科泰信息技术有限公司 | Optical fiber access system for multi-service optical fiber transceiver |
| US8369347B2 (en) * | 2009-09-14 | 2013-02-05 | Futurewei Technologies, Inc. | Fiber channel over Ethernet and fiber channel switching based on Ethernet switch fabrics |
| CN202918270U (en) * | 2012-11-15 | 2013-05-01 | 安徽康海时代科技有限公司 | Optical module interface circuit |
Non-Patent Citations (2)
| Title |
|---|
| 千应庆等: "光模块PECL接口互联技术研究", 《兵工自动化》 * |
| 程建伟: "光纤通道交换机FC-0层和FC-1层设计", 《中国优秀硕士学文论文全文数据库信息科技辑》 * |
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Application publication date: 20150701 |