CN101800600B - Photoelectric conversion circuit and realizing method thereof based on 1553B bus - Google Patents
Photoelectric conversion circuit and realizing method thereof based on 1553B bus Download PDFInfo
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- CN101800600B CN101800600B CN2009102432719A CN200910243271A CN101800600B CN 101800600 B CN101800600 B CN 101800600B CN 2009102432719 A CN2009102432719 A CN 2009102432719A CN 200910243271 A CN200910243271 A CN 200910243271A CN 101800600 B CN101800600 B CN 101800600B
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Abstract
The invention relates to a photoelectric conversion n circuit and a realizing method thereof based on a 1553B bus, the circuit is composed of an isolation transformer, a sender and a receiver, wherein, the sender is composed of an interface driving unit A, a dual/single end signal converting unit, a control signal generating unit and a photoelectric conversion unit, the receiver is composed of a photoelectric conversion unit, a dual/single end signal converting unit and an interface driving unit B, an electric signal is converted into a photo signal to transmit through the photoelectric conversion circuit of the 1553B bus, the zero level signal status and the no signal status of a 1553B bus signal can be effectively distinguished by the photoelectric conversion circuit and the signal can be accurately transmitted between the 1553B bus, thereby realizing the remote transmission of the 1553B bus signal, moreover, the photo signal has the characteristic of anti-electromagnetic interference, thereby increasing the anti-interference capability of 1553B signal transmission.
Description
Technical field
The invention belongs to communication technique field, particularly relate to a kind of photoelectric switching circuit based on the 1553B bus and its implementation.
Background technology
MLI-STD-1553B is a kind of centralized control formula, interior of aircraft time-division command/response type multi-path serial data bus standard, have high reliability and flexibility, become the interconnected key of modern airborne system equipment, be widely used on the weapon platforms such as aircraft, naval vessel, tank, and be applied to gradually in the civilian field.In space environment, because from the electromagnetic interference inside and outside the system, as lightning, missile-borne electronic system surface or inner static release etc., can bring serious even fatal problem to system.Adopt the 1553B bus of Shielded Twisted Pair can not satisfy high-performance and the highly reliable transfer of data requirement under abominable electromagnetic environment of following aircraft, this situation has the metal shell of function of shielding and can become more serious along with casing employing in future composite material replaces; The 1553B bus is subjected to the influence of bus protocol simultaneously, and transmission range also is restricted.In order effectively to address the above problem, optical fiber technology is incorporated in guided missile (carrier rocket) system of a new generation, just seem very necessary to satisfy the integrated and growing system data throughput demand of bullet (arrow) live subsystem that will become increasingly complex future.
The signal of 1553 bus transfer has three kinds of states: high level, low level and no signal condition.Differential signal on 1553 buses is two-wire transmission at cable, when the level of two-wire is low simultaneously, is no signal condition, when the level of two-wire is not low simultaneously, has been signal condition.But the speed of cable transmission is slow, loss ratio is bigger, can not grow Distance Transmission, antijamming capability is more weak, therefore, development is based on the photoelectric switching circuit of 1553 bussing techniques, and it is necessary carrying out Optical Fiber Transmission, but because optical fiber is the single fiber transmission, to company's nought state and the very difficult differentiation of no signal condition of signal.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, a kind of photoelectric switching circuit based on the 1553B bus is provided, by being converted to light signal, the signal of telecommunication transmits, and can effectively distinguish zero level signal condition and the no signal condition of signal, realize the long-distance transmissions of 1553B bus signals, and improved the anti-interference of signal transmission.
Another object of the present invention is to provide a kind of implementation method of the photoelectric switching circuit based on the 1553B bus.
Above-mentioned purpose of the present invention is achieved by following technical solution:
A kind of photoelectric switching circuit based on the 1553B bus, it is characterized in that being formed by isolating transformer, transmitter 1 and receiver 1, wherein transmitter 1 partly is made up of interface driver element A, two/the single-ended signal converting unit, control signal generating unit and electrooptic switching element etc., receiver 1 is made up of photoelectric conversion unit, list/double-end signal converting unit and interface driver element B, wherein:
Isolating transformer: receive the signal through the 1553B bus 1 of coupling network, and the signal of 1553B bus 1 is exported to the interface driver element A of transmitter 1, receive bus signals BUS+ ', the BUS-' of the interface driver element B output of receiver 1 simultaneously, when transmitter 1 or receiver 1 break down, transmitter 1 and receiver 1 are isolated with 1553B bus 1;
The control signal Ctrl ' of interface driver element A: signal BUS+, the BUS-of the 1553B bus 1 of reception isolating transformer output and the photoelectric conversion unit output of receiver 1, be Transistor-Transistor Logic level with the level conversion of signal BUS+, the BUS-of described 1553B bus 1, and output TTL differential signal RX and
Give control signal generating unit and two/single-ended signal converting unit, stop bus signals BUS+ ', the BUS-' of the interface driver element B output of receiver 1 to reflux through interface driver element A according to control signal Ctrl ' simultaneously; Two/the single-ended signal converting unit: the TTL differential signal RX of receiving interface driver element A output and
With described differential signal RX and
Be converted to single-ended signal RO, and single-ended signal RO is exported to electrooptic switching element; The control signal generating unit: the TTL differential signal RX of receiving interface driver element A output and
And with described differential signal RX and
Carry out the XOR computing, produce control signal Ctrl, the signal that control signal Ctrl is used for distinguishing 1553B bus 1 is for having signal condition or be no signal condition, and control signal Ctrl is exported to electrooptic switching element;
Electrooptic switching element: receive the single-ended signal RO of two/single-ended signal converting unit output and the control signal Ctrl of control signal generating unit output, single-ended signal RO and control signal Ctrl are converted to light signal, and described light signal are exported to the receiver 2 of another 1553B bus photoelectric switching circuit by optical fiber;
Photoelectric conversion unit: the light signal that receives transmitter 2 outputs of described another 1553B bus photoelectric switching circuit by optical fiber, and light signal is converted to single-ended signal RO ' and control signal Ctrl ', simultaneously single-ended signal RO ' is exported to list/double-end signal converting unit, control signal Ctrl ' is exported to the interface driver element A of transmitter 1 and the interface driver element B of receiver 1 respectively;
List/double-end signal converting unit: receive the single-ended signal RO ' of photoelectric conversion unit output, and with described single-ended signal RO ' be converted to differential signal TX and
With differential signal TX and
Export to interface driver element B;
Interface driver element B; The differential signal TX that receives the output of list/double-end signal converting unit with
And the control signal Ctrl ' of photoelectric conversion unit output, according to control signal Ctrl ' judge described differential signal TX and
For signal condition or no signal condition are arranged, and with differential signal TX and
Have signal condition or the no signal condition judged according to control signal Ctrl ' revert to, the identical signal of waveform of the bus signals that receives from 1553B bus 2 with the transmitter 2 of another 1553B bus photoelectric switching circuit, Transistor-Transistor Logic level with described signal is converted to the bus signals level simultaneously, and bus signals BUS+ ', BUS-' after will changing export to 1553B bus 1 through isolating transformer.
In above-mentioned photoelectric switching circuit based on the 1553B bus, the control signal generating unit in the transmitter 1 with differential signal RX and
Carry out the XOR computing, when 1553B bus double-wire signal is low simultaneously, XOR computing output low level is no signal condition, and when 1553B bus double-wire signal is not low simultaneously, XOR computing output high level has been signal condition.
In above-mentioned photoelectric switching circuit based on the 1553B bus, electrooptic switching element is converted to wavelength optical signals with single-ended signal RO and control signal Ctrl and transmits in same optical fiber.
In above-mentioned photoelectric switching circuit based on the 1553B bus, electrooptic switching element is converted to the light signal that wavelength is 1310nm with single-ended signal RO, and control signal Ctrl is converted to the light signal that wavelength is 1550nm.
A kind of implementation method of the photoelectric switching circuit based on the 1553B bus, step is as follows:
The interface driver element A of (1) the one 1553B bus photoelectric switching circuit transmitter 1 receives 1553B bus signals BUS+, the BUS-of isolating transformer output, be Transistor-Transistor Logic level with the level conversion of described 1553B bus signals BUS+, BUS-, and output TTL differential signal RX and
Give control signal generating unit and two/single-ended signal converting unit;
The TTL differential signal RX of two/single-ended signal converting unit receiving interface driver element A output of (2) the one 1553B bus photoelectric switching circuits and
, with described differential signal RX and
Be converted to single-ended signal RO, and single-ended signal RO is exported to electrooptic switching element;
(3) simultaneously, the TTL differential signal RX of the control signal generating unit receiving interface driver element A of 1553B bus photoelectric switching circuit output and
, and with described differential signal RX and
Carry out the XOR computing, produce control signal Ctrl, control signal Ctrl be used for distinguishing bus signals for signal condition or no signal condition are arranged, and control signal Ctrl is exported to electrooptic switching element;
The single-ended signal RO of two/single-ended signal converting unit output that the electrooptic switching element of (4) the one 1553B bus photoelectric switching circuits receives and the control signal Ctrl of control signal generating unit output, single-ended signal RO and control signal Ctrl are converted to light signal, and described light signal are exported to the receiver 2 of the 2nd 1553B bus photoelectric switching circuit by optical fiber;
The photoelectric conversion unit of (5) the 2nd 1553B bus photoelectric switching circuit receivers 2 receives the light signal of a 1553B bus photoelectric switching circuit transmitter 1 output by optical fiber, and light signal is converted to single-ended signal RO and control signal Ctrl, simultaneously single-ended signal RO is exported to the list/double-end signal converting unit of receiver 2, control signal Ctrl is exported to the interface driver element A of transmitter 2 and the interface driver element B of receiver 2 respectively;
The list of (6) the 2nd 1553B bus photoelectric switching circuits/double-end signal converting unit receives the single-ended signal RO of photoelectric conversion unit output, and with described single-ended signal RO be converted to differential signal TX and
With differential signal TX and
Export to interface driver element B;
The differential signal TX that the interface driver element B of (7) the 2nd 1553B bus photoelectric switching circuits receives the output of list/double-end signal converting unit with
, and the control signal Ctrl of photoelectric conversion unit output, according to control signal Ctrl judge described differential signal TX and
For signal condition or no signal condition are arranged, and with differential signal TX and
Have signal condition or the no signal condition judged according to control signal Ctrl revert to, the identical signal of waveform of the bus signals that receives from 1553B bus 1 with the transmitter 1 of a 1553B bus photoelectric switching circuit, Transistor-Transistor Logic level with described signal is converted to the bus signals level simultaneously, and bus signals BUS+, BUS-after will changing export to 1553B bus 2 through isolating transformer.
The present invention has following advantage compared to existing technology:
(1) photoelectric switching circuit of the present invention by the 1553B bus is converted to light signal with the signal of telecommunication and transmits, this photoelectric switching circuit can effectively be distinguished zero level signal condition and the no signal condition of 1553B bus signals, signal is transmitted between the 1553B bus accurately, realized the long-distance transmissions of 1553B bus signals, because light signal has anti-electromagnetic interference, therefore also improved the antijamming capability of 1553B signal transmission in addition;
(2) photoelectric conversion unit in the receiver is exported to the interface driver element A of transmitter and the interface driver element B of receiver simultaneously with control signal in the photoelectric switching circuit of the present invention, and this control signal can effectively stop bus signals to reflux through the interface driver element A of transmitter;
(3) photoelectric switching circuit of the present invention judges that zero level signal condition and the no signal condition method of 1553B bus signals are simple, is easy to circuit and realizes that stronger practicality is arranged;
(4) photoelectric switching circuit of the present invention is converted to the employing Optical Fiber Transmission with the 1553B bus signals by the conventional bus transmission, has saved cost.
Description of drawings
Fig. 1 is the photoelectric switching circuit bus signal transmission schematic diagram that the present invention is based on the 1553B bus;
Fig. 2 is the structural representation that the present invention is based on the photoelectric switching circuit of 1553B bus;
Fig. 3 is each signal waveforms of the process of transmitting generation of photoelectric switching circuit of the present invention;
Fig. 4 is each signal waveforms of the receiving course generation of photoelectric switching circuit of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Differential signal on the 1553B bus is the two-wire transmission at cable, distinguishes zero level signal condition and no signal condition easily, but through after the Optical Fiber Transmission, just can not judge the separation of zero level signal condition and no signal condition.Transmitter based on the 1553B photoelectric switching circuit receives 1553B two-phase Manchester code from bus, and convert them to complementary TTL data by 1553B bus interface driver element, single fiber transmission for the ease of optical fiber, this complementary differential signal is imported the side a and b of two/single-ended signal converting unit, and as long as this moment is its Enable Pin of control
For low, just can be at its output RO end output and the anodal identical single-ended signal of differential signal.When the differential signal with both-end is converted to single-ended signal, also to carry out the XOR computing to it.Because the level of 1553B bus signals is no signal condition when being low simultaneously, when the level of 1553B bus signals simultaneously when low for signal condition is arranged, so the later signal of process XOR is low level when no signal condition, it is high level when signal condition is arranged, and with this signal as control signal, this signal and synchronous via the single-ended bus signals of two/single-ended signal converting unit output, single-ended TTL signal and control signal are converted to the light signal incoming fiber optic that wavelength is 1310nm and 1550nm through electrooptic switching element respectively, and two kinds of signal synchronous transmission arrive the receiver of photoelectric switching circuit.
The receiver of photoelectric switching circuit will be converted to single-ended TTL signal and control signal by the light signal of optical fiber input by photoelectric conversion unit respectively, the input DI end of single-ended TTL signal input list/double-end signal converting unit, it is high needing its Enable Pin of control DE this moment, then obtain and the same signal of importing of single-ended TTL signal at the A ' of list/double-end signal converting unit end, the signal that B ' end obtains and A ' end is complementary fully, the signal of this moment is different with original signal.At last, with the interface driver element of this differential signal input sink, simultaneously control signal is inserted Enable Pin RXEN and the TXINH of the interface driver element of receiver and transmitter.Because the characteristics of control signal, namely when being arranged, signal condition enables driver element, when no signal condition, force the interface driver element to be output as low, so just can obtain and the living 1553B bus signals of original signal at the output of the interface driver element of receiver, and then be used for driving isolating transformer.
Be illustrated in figure 1 as the photoelectric switching circuit bus signal transmission schematic diagram that the present invention is based on the 1553B bus, the light signal that transmitter 1 is exported in the 1553B bus photoelectric switching circuit among the figure is exported to receiver 2 in the 2nd 1553B bus photoelectric switching circuit, and receiver 2 obtains the light signal that receives and the duplicate 1553B bus signals of former transmission signal (signal of 1553B bus 1) after changing; The light signal of transmitter 2 outputs is exported to receiver 1 in the 1553B bus photoelectric switching circuit in the 2nd 1553B bus photoelectric switching circuit, receiver 1 obtains the light signal that receives and the duplicate 1553B bus signals of former transmission signal (signal of 1553B bus 2) after changing, two photoelectric switching circuits cooperatively interact, and finish the transmission of bus signals between 1553B bus 1 and 1553B bus 2.
Be illustrated in figure 2 as the structural representation of the photoelectric switching circuit that the present invention is based on the 1553B bus, provided the structural representation of a 1553B bus photoelectric switching circuit among Fig. 2, the structure of the structure of the 2nd 1553B bus photoelectric switching circuit and a 1553B bus photoelectric switching circuit is identical, does not provide accompanying drawing more in addition.A 1553B bus photoelectric switching circuit is made up of isolating transformer, transmitter 1 and receiver 1 as shown in Figure 2, wherein transmitter 1 partly is made up of interface driver element A, two/the single-ended signal converting unit, control signal generating unit and electrooptic switching element etc., and receiver 1 is made up of photoelectric conversion unit, list/double-end signal converting unit and interface driver element B.
Below Fig. 1 and Fig. 2 are combined the implementation procedure of photoelectric switching circuit of the present invention are done a detailed description:
(1) signal of 1553B bus 1 is converted to light signal through the transmitter 1 of a 1553B bus photoelectric switching circuit, and as follows to the process of the receiver 2 of the 2nd 1553B bus photoelectric switching circuit by Optical Fiber Transmission:
The differential signal of transmission is BUS+ and BUS-on the 1553B bus 1, the signal of 1553B bus 1 is transferred to the interface driver element A of the transmitter 1 of a 1553B bus photoelectric switching circuit through coupling network and isolating transformer, the signal waveform of interface driver element A is not done any conversion, just bus level is converted to Transistor-Transistor Logic level, thus through the RX that exports behind the interface driver element A and
Signal waveform, in full accord with the waveform of BUS+ among Fig. 3 and BUS-, remain complementary differential signal (being illustrated in figure 3 as each signal waveforms that the process of transmitting of photoelectric switching circuit of the present invention produces), just voltage has been converted the voltage for TTL, RX and
Signal will be converted to single-ended signal by two/single-ended signal converting unit, is beneficial to transmit in optical fiber.The RO end of two/single-ended signal converting unit is output,
End is Enable Pin, when
Be 0 o'clock, circuit is in accepting state, be to forbid output at 1 o'clock, so when receiving only need with
Pin is set to 0 and gets final product.A, B end is for the differential signal input of two/single-ended signal converting unit, and when the A pin level was higher than B, the data that representative sends were 1; When the A pin level was lower than B, the data that representative sends were 0, therefore, when holding with the A of two/single-ended signal converting unit, the RX of interface driver element A output links to each other,
Link to each other with the B end, and put
When low, will be consistent with the RX waveform from the output signal of its RO end, shown in the RO waveform among Fig. 3, like this, the differential signal of both-end just is converted for single-ended signal.
In order to distinguish zero level signal condition and the no signal condition of bus signals, also will with from the RX of interface driver element A output and
Carry out the XOR computing, produce a control signal Ctrl.By 1553B bus principle as can be known, when the two-wire level of bus is low simultaneously, be no signal condition, when the level of two-wire is not low simultaneously, be signal condition, when two same phase times of signal, XOR circuit output low level; When two signal inversion, XOR circuit output high level.Therefore RX and
Behind the input control signal generating unit, will when having signal, bus produce high level; Produce low level during the bus no signal, shown in the Ctrl waveform among Fig. 3.Zero level signal condition and no signal condition in the time of like this, just will signal being arranged are distinguished.
Single-ended signal RO and control signal Ctrl are converted to the light signal incoming fiber optic that wavelength is 1310nm and 1550nm through electrooptic switching element respectively, the receiver 2 of two kinds of signal synchronous transmission to the two 1553B bus photoelectric switching circuits,
The receiver 2 of (two) the 2nd 1553B bus photoelectric switching circuits will be changed from the light signal that transmitter 1 receives, and recover with the duplicate 1553B bus signals of former transmission signal (signal of 1553B bus 1) and to be transferred to the process of 1553B bus 2 as follows:
Receiver 1 in the 1553B bus photoelectric switching circuit that this transfer process and following (four) describe receives the light signal of transmitter 2 outputs in the 2nd 1553B bus photoelectric switching circuit and changes, recover with the duplicate 1553B bus signals of former transmission signal (signal of 1553B bus 2) and to be transferred to the process of 1553B bus 1 just the same, be not described in detail here.
(3) signal of 1553B bus 2 is converted to light signal through the transmitter 2 of the 2nd 1553B bus photoelectric switching circuit, and as follows to the process of the receiver 1 of a 1553B bus photoelectric switching circuit by Optical Fiber Transmission:
The signal of the 1553B bus 1 that this process and top () describe is converted to light signal through the transmitter 1 of a 1553B bus photoelectric switching circuit, and just the same to the process of the receiver 2 of the 2nd 1553B bus photoelectric switching circuit by Optical Fiber Transmission, no longer be described in detail here.
Receiver 1 in (four) the one 1553B bus photoelectric switching circuits receives the light signal of transmitter 2 outputs in the 2nd 1553B bus photoelectric switching circuit and changes, and recovers with the duplicate 1553B bus signals of former transmission signal (signal of 1553B bus 2) and to be transferred to the process of 1553B bus 1 as follows:
The single-ended signal RO ' of transmitter 2 outputs of the 2nd 1553B bus photoelectric switching circuit and control signal Ctrl ' are through arriving receiver 1 behind the optical fiber, be converted to the signal of telecommunication again by the photoelectric conversion unit light signal, shown in the RO ' and Ctrl ' waveform of Fig. 4, (be illustrated in figure 4 as each signal waveforms of the receiving course generation of photoelectric switching circuit of the present invention), in order to recover the 1553B bus signals accurately, at first single-ended signal RO ' to be converted to the both-end differential signal, the DI end of list/double-end signal converting unit is the input of single-ended signal RO ', the DE end is Enable Pin, when DE is 1, circuit is in the transmission state, be to forbid output at 0 o'clock, so only needing that when receiving the DE pin is set to 1 gets final product, A ', B ' is the differential signal end of list/double-end signal converting unit, when the data that send were 1, A ' pin level was higher than B '; When the data that send are 0, A ' pin level is lower than B ', when the single-ended electrical signal RO ' of photoelectric conversion unit recovery inserts the DI end of list/double-end signal converting unit, and enable DE, characteristics according to list/double-end signal converting unit, shown in the BUS1+ ' and BUS1-' of Fig. 4, be about to the also wrong signal condition that has been decoded into of no signal condition from the output signal of its A ', B ' end this moment.In order to recover bus signals accurately, with the TX of the output signal input interface driver element B of A ', B ' end and
, simultaneously with Enable Pin RXEN and the TXINH of control signal Ctrl ' access interface driver element A and interface driver element B.RXEN is the Enable Pin of interface driver element A, if be high, will force RX with
For low; TXINH is the end of forbidding of interface driver element B, for low then interface driver element B forbids output.Because the characteristics of control signal, namely when being arranged, signal condition enables interface driver element B, when no signal condition, force interface driver element B to be output as low, so just can obtain at the output of interface driver element B and former transmission signal BUS1+ ', the living bus signals of BUS1-', simultaneously control signal Ctrl ' can suppress bus signals and refluxes by interface driver element A, drives isolating transformer and enters 1553B bus 1 by coupling network finally by the bus signals BUS1+ ' that crosses interface driver element B and BUS1-' and transmit.
Through said process, the 1553B bus signals has just carried out transmission accurately through optical fiber, can realize transmitting-receiving automatically simultaneously, thereby has improved anti-interference and the long-distance transmissions of 1553B bus.
The above; only be the embodiment of the best of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
The content that is not described in detail in the specification of the present invention belongs to this area professional and technical personnel's known technology.
Claims (4)
1. photoelectric switching circuit based on the 1553B bus, it is characterized in that being formed by isolating transformer, transmitter 1 and receiver 1, wherein transmitter 1 is made up of interface driver element A, two/the single-ended signal converting unit, control signal generating unit and electrooptic switching element, receiver 1 is made up of photoelectric conversion unit, list/double-end signal converting unit and interface driver element B, wherein:
Isolating transformer: receive the signal through the 1553B bus 1 of coupling network, and the signal of 1553B bus 1 is exported to the interface driver element A of transmitter 1, receive bus signals BUS+ ', the BUS-' of the interface driver element B output of receiver 1 simultaneously, when transmitter 1 or receiver 1 break down, transmitter 1 and receiver 1 are isolated with 1553B bus 1;
The control signal Ctrl ' of interface driver element A: signal BUS+, the BUS-of the 1553B bus 1 of reception isolating transformer output and the photoelectric conversion unit output of receiver 1, be Transistor-Transistor Logic level with the level conversion of signal BUS+, the BUS-of described 1553B bus 1, and output TTL differential signal RX and
Give control signal generating unit and two/single-ended signal converting unit, stop bus signals BUS+ ', the BUS-' of the interface driver element B output of receiver 1 to reflux through interface driver element A according to control signal Ctrl ' simultaneously;
Two/the single-ended signal converting unit: the TTL differential signal RX of receiving interface driver element A output and
With described differential signal RX and
Be converted to single-ended signal RO, and single-ended signal RO is exported to electrooptic switching element;
The control signal generating unit: the TTL differential signal RX of receiving interface driver element A output and
And with described differential signal RX and
Carry out the XOR computing, produce control signal Ctrl, control signal Ctrl is used for distinguishing the signal of 1553B bus 1 for signal condition being arranged or being no signal condition, and control signal Ctrl exported to electrooptic switching element, and when 1553B bus 1 double-wire signal is low simultaneously, XOR computing output low level, be no signal condition, when 1553B bus 1 double-wire signal is not low simultaneously, XOR computing output high level has been signal condition;
Electrooptic switching element: receive the single-ended signal RO of two/single-ended signal converting unit output and the control signal Ctrl of control signal generating unit output, single-ended signal RO and control signal Ctrl are converted to light signal, and described light signal are exported to the receiver 2 of the 2nd 1553B bus photoelectric switching circuit by optical fiber;
Photoelectric conversion unit: the light signal that receives transmitter 2 outputs of described the 2nd 1553B bus photoelectric switching circuit by optical fiber, and light signal is converted to single-ended signal RO ' and control signal Ctrl ', simultaneously single-ended signal RO ' is exported to list/double-end signal converting unit, control signal Ctrl ' is exported to the interface driver element A of transmitter 1 and the interface driver element B of receiver 1 respectively;
List/double-end signal converting unit: receive the single-ended signal RO ' of photoelectric conversion unit output, and with described single-ended signal RO ' be converted to differential signal TX and
With differential signal TX and
Export to interface driver element B;
Interface driver element B; The differential signal TX that receives the output of list/double-end signal converting unit with
And the control signal Ctrl ' of photoelectric conversion unit output, according to control signal Ctrl ' judge described differential signal TX and
For signal condition or no signal condition are arranged, and with differential signal TX and
Have signal condition or the no signal condition judged according to control signal Ctrl ' revert to, the identical signal of waveform of the bus signals that receives from 1553B bus 2 with the transmitter 2 of the 2nd 1553B bus photoelectric switching circuit, Transistor-Transistor Logic level with described signal is converted to the bus signals level simultaneously, and bus signals BUS+ ', BUS-' after will changing export to 1553B bus 1 through isolating transformer;
Wherein: the RO end of two/single-ended signal converting unit is output,
End is Enable Pin, will when receiving
Pin is set to 0; The DI end of list/double-end signal converting unit is the input of single-ended signal RO ', and the DE end is Enable Pin, when receiving the DE pin is set to 1; With the RXEN of control signal Ctrl ' access interface driver element A and the TXINH of interface driver element B, RXEN is the Enable Pin of interface driver element A, and TXINH is the end of forbidding of interface driver element B; Electrooptic switching element is converted to wavelength optical signals with single-ended signal RO and control signal Ctrl and transmits in optical fiber.
2. a kind of photoelectric switching circuit based on the 1553B bus according to claim 1 is characterized in that: described electrooptic switching element is converted to wavelength optical signals with single-ended signal RO and control signal Ctrl and transmits in same optical fiber.
3. a kind of photoelectric switching circuit based on the 1553B bus according to claim 2, it is characterized in that: described electrooptic switching element is converted to the light signal that wavelength is 1310nm with single-ended signal RO, and control signal Ctrl is converted to the light signal that wavelength is 1550nm.
4. the implementation method of a kind of photoelectric switching circuit based on the 1553B bus according to claim 1 is characterized in that step is as follows:
The interface driver element A of (1) the one 1553B bus photoelectric switching circuit transmitter 1 receives 1553B bus signals BUS+, the BUS-of isolating transformer output, be Transistor-Transistor Logic level with the level conversion of described 1553B bus signals BUS+, BUS-, and output TTL differential signal RX and
Give control signal generating unit and two/single-ended signal converting unit;
The TTL differential signal RX of two/single-ended signal converting unit receiving interface driver element A output of (2) the one 1553B bus photoelectric switching circuits and
With described differential signal RX and
Be converted to single-ended signal RO, and single-ended signal RO is exported to electrooptic switching element;
(3) simultaneously, the TTL differential signal RX of the control signal generating unit receiving interface driver element A of 1553B bus photoelectric switching circuit output and
And with described differential signal RX and
Carry out the XOR computing, produce control signal Ctrl, control signal Ctrl be used for to distinguish bus signals for signal condition or no signal condition are arranged, and control signal Ctrl exported to electrooptic switching element, and when 1553B bus double-wire signal is low simultaneously, XOR computing output low level, be no signal condition, when 1553B bus double-wire signal is not low simultaneously, XOR computing output high level has been signal condition;
The single-ended signal RO of two/single-ended signal converting unit output that the electrooptic switching element of (4) the one 1553B bus photoelectric switching circuits receives and the control signal Ctrl of control signal generating unit output, single-ended signal RO and control signal Ctrl are converted to light signal, and described light signal are exported to the receiver 2 of the 2nd 1553B bus photoelectric switching circuit by optical fiber;
The photoelectric conversion unit of (5) the 2nd 1553B bus photoelectric switching circuit receivers 2 receives the light signal of a 1553B bus photoelectric switching circuit transmitter 1 output by optical fiber, and light signal is converted to single-ended signal RO and control signal Ctrl, simultaneously single-ended signal RO is exported to the list/double-end signal converting unit of receiver 2, control signal Ctrl is exported to the interface driver element A of transmitter 2 and the interface driver element B of receiver 2 respectively;
The list of (6) the 2nd 1553B bus photoelectric switching circuits/double-end signal converting unit receives the single-ended signal RO of photoelectric conversion unit output, and with described single-ended signal RO be converted to differential signal TX and
With differential signal TX and
Export to interface driver element B;
The differential signal TX that the interface driver element B of (7) the 2nd 1553B bus photoelectric switching circuits receives the output of list/double-end signal converting unit with
And the control signal Ctrl of photoelectric conversion unit output, according to control signal Ctrl judge described differential signal TX and
For signal condition or no signal condition are arranged, and with differential signal TX and
Have signal condition or the no signal condition judged according to control signal Ctrl revert to, the identical signal of waveform of the bus signals that receives from 1553B bus 1 with the transmitter 1 of a 1553B bus photoelectric switching circuit, Transistor-Transistor Logic level with described signal is converted to the bus signals level simultaneously, and bus signals BUS+, BUS-after will changing export to 1553B bus 2 through isolating transformer;
Wherein: the RO end of two/single-ended signal converting unit is output,
End is Enable Pin, will when receiving
Pin is set to 0; The DI end of list/double-end signal converting unit is the input of single-ended signal RO ', and the DE end is Enable Pin, when receiving the DE pin is set to 1; With the RXEN of control signal Ctrl ' access interface driver element A and the TXINH of interface driver element B, RXEN is the Enable Pin of interface driver element A, and TXINH is the end of forbidding of interface driver element B; Electrooptic switching element is converted to wavelength optical signals with single-ended signal RO and control signal Ctrl and transmits in optical fiber.
Priority Applications (1)
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| CN2009102432719A CN101800600B (en) | 2009-12-30 | 2009-12-30 | Photoelectric conversion circuit and realizing method thereof based on 1553B bus |
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| CN2009102432719A CN101800600B (en) | 2009-12-30 | 2009-12-30 | Photoelectric conversion circuit and realizing method thereof based on 1553B bus |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102064821B (en) * | 2010-11-19 | 2013-08-21 | 中兴通讯股份有限公司 | Method for realizing serial port isolation and serial port isolating circuit |
| CN102035600B (en) * | 2010-11-26 | 2013-08-14 | 北京航空航天大学 | Physical interface board of high speed 1553B optical fiber bus |
| CN102035658B (en) * | 2010-11-26 | 2012-07-04 | 北京航空航天大学 | High-speed 1553B fiber bus IP core |
| CN102053942B (en) * | 2010-12-02 | 2012-09-26 | 西北工业大学 | Direct interface method of military standard-1553B (MIL-STD-1553B) bus and high-speed intelligent unified bus |
| CN102437878A (en) * | 2011-10-18 | 2012-05-02 | 中色科技股份有限公司 | Fiber-transmission-based interface circuit |
| CN102664782B (en) * | 2012-04-09 | 2015-01-14 | 中国电子科技集团公司第五十八研究所 | Discrete transceiver circuit suitable for high-speed 1553 bus |
| CN103077147B (en) * | 2012-12-31 | 2015-10-28 | 北京石竹科技股份有限公司 | A kind of global function 1553B bus IP Core based on chained list |
| CN103391081B (en) * | 2013-07-19 | 2016-01-27 | 中国航天科技集团公司第九研究院第七七一研究所 | A kind of Perceptual Load Drive Circuit of digital controllable |
| CN105515611A (en) * | 2015-12-21 | 2016-04-20 | 南京亚派科技股份有限公司 | APF (active power filter) communication system |
| JP6921488B2 (en) * | 2016-06-09 | 2021-08-18 | キヤノン株式会社 | Signal transmission equipment, signal transmission systems and equipment |
| CN107391416A (en) * | 2017-07-28 | 2017-11-24 | 珠海欧比特控制工程股份有限公司 | A kind of high speed 1553B bus signals receive and dispatch drive circuit |
| CN110708119B (en) * | 2019-09-20 | 2022-10-28 | 天津津航计算技术研究所 | Multi-channel 1553B bus optical fiber relay device |
| CN111600387B (en) * | 2020-05-26 | 2021-09-24 | 新风光电子科技股份有限公司 | Communication system and method for oil-immersed cascade SVG |
| CN114978317B (en) * | 2021-02-24 | 2023-12-22 | 北京石竹科技股份有限公司 | Method for realizing 1553B bus remote transmission through optical fiber |
| CN114024572A (en) * | 2021-10-28 | 2022-02-08 | 中国航空工业集团公司洛阳电光设备研究所 | 1553B bus multi-scene enhanced repeater and control method thereof |
| CN115776421A (en) * | 2022-11-02 | 2023-03-10 | 西安现代控制技术研究所 | Electromagnetic isolation circuit and method of high-speed network bus |
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| CN1540889A (en) * | 2003-10-31 | 2004-10-27 | 武汉理工大学 | Ring type optical fiber CAN bus network |
| CN1610327A (en) * | 2003-10-17 | 2005-04-27 | 中国科学院空间科学与应用研究中心 | Method for transmitting data of dissimilar bus cooperative work and equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1610327A (en) * | 2003-10-17 | 2005-04-27 | 中国科学院空间科学与应用研究中心 | Method for transmitting data of dissimilar bus cooperative work and equipment thereof |
| CN1540889A (en) * | 2003-10-31 | 2004-10-27 | 武汉理工大学 | Ring type optical fiber CAN bus network |
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